| /* |
| * linux/drivers/video/omap2/dss/dispc.c |
| * |
| * Copyright (C) 2009 Nokia Corporation |
| * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> |
| * |
| * Some code and ideas taken from drivers/video/omap/ driver |
| * by Imre Deak. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #define DSS_SUBSYS_NAME "DISPC" |
| |
| #include <linux/kernel.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/vmalloc.h> |
| #include <linux/export.h> |
| #include <linux/clk.h> |
| #include <linux/io.h> |
| #include <linux/jiffies.h> |
| #include <linux/seq_file.h> |
| #include <linux/delay.h> |
| #include <linux/workqueue.h> |
| #include <linux/hardirq.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/sizes.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/regmap.h> |
| #include <linux/of.h> |
| #include <linux/component.h> |
| |
| #include "omapdss.h" |
| #include "dss.h" |
| #include "dss_features.h" |
| #include "dispc.h" |
| |
| /* DISPC */ |
| #define DISPC_SZ_REGS SZ_4K |
| |
| enum omap_burst_size { |
| BURST_SIZE_X2 = 0, |
| BURST_SIZE_X4 = 1, |
| BURST_SIZE_X8 = 2, |
| }; |
| |
| #define REG_GET(idx, start, end) \ |
| FLD_GET(dispc_read_reg(idx), start, end) |
| |
| #define REG_FLD_MOD(idx, val, start, end) \ |
| dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end)) |
| |
| struct dispc_features { |
| u8 sw_start; |
| u8 fp_start; |
| u8 bp_start; |
| u16 sw_max; |
| u16 vp_max; |
| u16 hp_max; |
| u8 mgr_width_start; |
| u8 mgr_height_start; |
| u16 mgr_width_max; |
| u16 mgr_height_max; |
| unsigned long max_lcd_pclk; |
| unsigned long max_tv_pclk; |
| int (*calc_scaling) (unsigned long pclk, unsigned long lclk, |
| const struct videomode *vm, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| enum omap_color_mode color_mode, bool *five_taps, |
| int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, |
| u16 pos_x, unsigned long *core_clk, bool mem_to_mem); |
| unsigned long (*calc_core_clk) (unsigned long pclk, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| bool mem_to_mem); |
| u8 num_fifos; |
| |
| /* swap GFX & WB fifos */ |
| bool gfx_fifo_workaround:1; |
| |
| /* no DISPC_IRQ_FRAMEDONETV on this SoC */ |
| bool no_framedone_tv:1; |
| |
| /* revert to the OMAP4 mechanism of DISPC Smart Standby operation */ |
| bool mstandby_workaround:1; |
| |
| bool set_max_preload:1; |
| |
| /* PIXEL_INC is not added to the last pixel of a line */ |
| bool last_pixel_inc_missing:1; |
| |
| /* POL_FREQ has ALIGN bit */ |
| bool supports_sync_align:1; |
| |
| bool has_writeback:1; |
| |
| bool supports_double_pixel:1; |
| |
| /* |
| * Field order for VENC is different than HDMI. We should handle this in |
| * some intelligent manner, but as the SoCs have either HDMI or VENC, |
| * never both, we can just use this flag for now. |
| */ |
| bool reverse_ilace_field_order:1; |
| |
| bool has_gamma_table:1; |
| |
| bool has_gamma_i734_bug:1; |
| }; |
| |
| #define DISPC_MAX_NR_FIFOS 5 |
| #define DISPC_MAX_CHANNEL_GAMMA 4 |
| |
| static struct { |
| struct platform_device *pdev; |
| void __iomem *base; |
| |
| int irq; |
| irq_handler_t user_handler; |
| void *user_data; |
| |
| unsigned long core_clk_rate; |
| unsigned long tv_pclk_rate; |
| |
| u32 fifo_size[DISPC_MAX_NR_FIFOS]; |
| /* maps which plane is using a fifo. fifo-id -> plane-id */ |
| int fifo_assignment[DISPC_MAX_NR_FIFOS]; |
| |
| bool ctx_valid; |
| u32 ctx[DISPC_SZ_REGS / sizeof(u32)]; |
| |
| u32 *gamma_table[DISPC_MAX_CHANNEL_GAMMA]; |
| |
| const struct dispc_features *feat; |
| |
| bool is_enabled; |
| |
| struct regmap *syscon_pol; |
| u32 syscon_pol_offset; |
| |
| /* DISPC_CONTROL & DISPC_CONFIG lock*/ |
| spinlock_t control_lock; |
| } dispc; |
| |
| enum omap_color_component { |
| /* used for all color formats for OMAP3 and earlier |
| * and for RGB and Y color component on OMAP4 |
| */ |
| DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0, |
| /* used for UV component for |
| * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12 |
| * color formats on OMAP4 |
| */ |
| DISPC_COLOR_COMPONENT_UV = 1 << 1, |
| }; |
| |
| enum mgr_reg_fields { |
| DISPC_MGR_FLD_ENABLE, |
| DISPC_MGR_FLD_STNTFT, |
| DISPC_MGR_FLD_GO, |
| DISPC_MGR_FLD_TFTDATALINES, |
| DISPC_MGR_FLD_STALLMODE, |
| DISPC_MGR_FLD_TCKENABLE, |
| DISPC_MGR_FLD_TCKSELECTION, |
| DISPC_MGR_FLD_CPR, |
| DISPC_MGR_FLD_FIFOHANDCHECK, |
| /* used to maintain a count of the above fields */ |
| DISPC_MGR_FLD_NUM, |
| }; |
| |
| struct dispc_reg_field { |
| u16 reg; |
| u8 high; |
| u8 low; |
| }; |
| |
| struct dispc_gamma_desc { |
| u32 len; |
| u32 bits; |
| u16 reg; |
| bool has_index; |
| }; |
| |
| static const struct { |
| const char *name; |
| u32 vsync_irq; |
| u32 framedone_irq; |
| u32 sync_lost_irq; |
| struct dispc_gamma_desc gamma; |
| struct dispc_reg_field reg_desc[DISPC_MGR_FLD_NUM]; |
| } mgr_desc[] = { |
| [OMAP_DSS_CHANNEL_LCD] = { |
| .name = "LCD", |
| .vsync_irq = DISPC_IRQ_VSYNC, |
| .framedone_irq = DISPC_IRQ_FRAMEDONE, |
| .sync_lost_irq = DISPC_IRQ_SYNC_LOST, |
| .gamma = { |
| .len = 256, |
| .bits = 8, |
| .reg = DISPC_GAMMA_TABLE0, |
| .has_index = true, |
| }, |
| .reg_desc = { |
| [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 }, |
| [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 }, |
| [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 }, |
| [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 }, |
| [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 }, |
| [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 }, |
| [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 }, |
| [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 }, |
| [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 }, |
| }, |
| }, |
| [OMAP_DSS_CHANNEL_DIGIT] = { |
| .name = "DIGIT", |
| .vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN, |
| .framedone_irq = DISPC_IRQ_FRAMEDONETV, |
| .sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT, |
| .gamma = { |
| .len = 1024, |
| .bits = 10, |
| .reg = DISPC_GAMMA_TABLE2, |
| .has_index = false, |
| }, |
| .reg_desc = { |
| [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 }, |
| [DISPC_MGR_FLD_STNTFT] = { }, |
| [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 }, |
| [DISPC_MGR_FLD_TFTDATALINES] = { }, |
| [DISPC_MGR_FLD_STALLMODE] = { }, |
| [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 }, |
| [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 }, |
| [DISPC_MGR_FLD_CPR] = { }, |
| [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 }, |
| }, |
| }, |
| [OMAP_DSS_CHANNEL_LCD2] = { |
| .name = "LCD2", |
| .vsync_irq = DISPC_IRQ_VSYNC2, |
| .framedone_irq = DISPC_IRQ_FRAMEDONE2, |
| .sync_lost_irq = DISPC_IRQ_SYNC_LOST2, |
| .gamma = { |
| .len = 256, |
| .bits = 8, |
| .reg = DISPC_GAMMA_TABLE1, |
| .has_index = true, |
| }, |
| .reg_desc = { |
| [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 }, |
| [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 }, |
| [DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 }, |
| [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 }, |
| [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 }, |
| [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 }, |
| [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 }, |
| [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 }, |
| [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 }, |
| }, |
| }, |
| [OMAP_DSS_CHANNEL_LCD3] = { |
| .name = "LCD3", |
| .vsync_irq = DISPC_IRQ_VSYNC3, |
| .framedone_irq = DISPC_IRQ_FRAMEDONE3, |
| .sync_lost_irq = DISPC_IRQ_SYNC_LOST3, |
| .gamma = { |
| .len = 256, |
| .bits = 8, |
| .reg = DISPC_GAMMA_TABLE3, |
| .has_index = true, |
| }, |
| .reg_desc = { |
| [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 }, |
| [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 }, |
| [DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 }, |
| [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 }, |
| [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 }, |
| [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 }, |
| [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 }, |
| [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 }, |
| [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 }, |
| }, |
| }, |
| }; |
| |
| struct color_conv_coef { |
| int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb; |
| int full_range; |
| }; |
| |
| static unsigned long dispc_fclk_rate(void); |
| static unsigned long dispc_core_clk_rate(void); |
| static unsigned long dispc_mgr_lclk_rate(enum omap_channel channel); |
| static unsigned long dispc_mgr_pclk_rate(enum omap_channel channel); |
| |
| static unsigned long dispc_plane_pclk_rate(enum omap_plane plane); |
| static unsigned long dispc_plane_lclk_rate(enum omap_plane plane); |
| |
| static inline void dispc_write_reg(const u16 idx, u32 val) |
| { |
| __raw_writel(val, dispc.base + idx); |
| } |
| |
| static inline u32 dispc_read_reg(const u16 idx) |
| { |
| return __raw_readl(dispc.base + idx); |
| } |
| |
| static u32 mgr_fld_read(enum omap_channel channel, enum mgr_reg_fields regfld) |
| { |
| const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld]; |
| return REG_GET(rfld.reg, rfld.high, rfld.low); |
| } |
| |
| static void mgr_fld_write(enum omap_channel channel, |
| enum mgr_reg_fields regfld, int val) { |
| const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld]; |
| const bool need_lock = rfld.reg == DISPC_CONTROL || rfld.reg == DISPC_CONFIG; |
| unsigned long flags; |
| |
| if (need_lock) |
| spin_lock_irqsave(&dispc.control_lock, flags); |
| |
| REG_FLD_MOD(rfld.reg, val, rfld.high, rfld.low); |
| |
| if (need_lock) |
| spin_unlock_irqrestore(&dispc.control_lock, flags); |
| } |
| |
| #define SR(reg) \ |
| dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg) |
| #define RR(reg) \ |
| dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)]) |
| |
| static void dispc_save_context(void) |
| { |
| int i, j; |
| |
| DSSDBG("dispc_save_context\n"); |
| |
| SR(IRQENABLE); |
| SR(CONTROL); |
| SR(CONFIG); |
| SR(LINE_NUMBER); |
| if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) || |
| dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) |
| SR(GLOBAL_ALPHA); |
| if (dss_has_feature(FEAT_MGR_LCD2)) { |
| SR(CONTROL2); |
| SR(CONFIG2); |
| } |
| if (dss_has_feature(FEAT_MGR_LCD3)) { |
| SR(CONTROL3); |
| SR(CONFIG3); |
| } |
| |
| for (i = 0; i < dss_feat_get_num_mgrs(); i++) { |
| SR(DEFAULT_COLOR(i)); |
| SR(TRANS_COLOR(i)); |
| SR(SIZE_MGR(i)); |
| if (i == OMAP_DSS_CHANNEL_DIGIT) |
| continue; |
| SR(TIMING_H(i)); |
| SR(TIMING_V(i)); |
| SR(POL_FREQ(i)); |
| SR(DIVISORo(i)); |
| |
| SR(DATA_CYCLE1(i)); |
| SR(DATA_CYCLE2(i)); |
| SR(DATA_CYCLE3(i)); |
| |
| if (dss_has_feature(FEAT_CPR)) { |
| SR(CPR_COEF_R(i)); |
| SR(CPR_COEF_G(i)); |
| SR(CPR_COEF_B(i)); |
| } |
| } |
| |
| for (i = 0; i < dss_feat_get_num_ovls(); i++) { |
| SR(OVL_BA0(i)); |
| SR(OVL_BA1(i)); |
| SR(OVL_POSITION(i)); |
| SR(OVL_SIZE(i)); |
| SR(OVL_ATTRIBUTES(i)); |
| SR(OVL_FIFO_THRESHOLD(i)); |
| SR(OVL_ROW_INC(i)); |
| SR(OVL_PIXEL_INC(i)); |
| if (dss_has_feature(FEAT_PRELOAD)) |
| SR(OVL_PRELOAD(i)); |
| if (i == OMAP_DSS_GFX) { |
| SR(OVL_WINDOW_SKIP(i)); |
| SR(OVL_TABLE_BA(i)); |
| continue; |
| } |
| SR(OVL_FIR(i)); |
| SR(OVL_PICTURE_SIZE(i)); |
| SR(OVL_ACCU0(i)); |
| SR(OVL_ACCU1(i)); |
| |
| for (j = 0; j < 8; j++) |
| SR(OVL_FIR_COEF_H(i, j)); |
| |
| for (j = 0; j < 8; j++) |
| SR(OVL_FIR_COEF_HV(i, j)); |
| |
| for (j = 0; j < 5; j++) |
| SR(OVL_CONV_COEF(i, j)); |
| |
| if (dss_has_feature(FEAT_FIR_COEF_V)) { |
| for (j = 0; j < 8; j++) |
| SR(OVL_FIR_COEF_V(i, j)); |
| } |
| |
| if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { |
| SR(OVL_BA0_UV(i)); |
| SR(OVL_BA1_UV(i)); |
| SR(OVL_FIR2(i)); |
| SR(OVL_ACCU2_0(i)); |
| SR(OVL_ACCU2_1(i)); |
| |
| for (j = 0; j < 8; j++) |
| SR(OVL_FIR_COEF_H2(i, j)); |
| |
| for (j = 0; j < 8; j++) |
| SR(OVL_FIR_COEF_HV2(i, j)); |
| |
| for (j = 0; j < 8; j++) |
| SR(OVL_FIR_COEF_V2(i, j)); |
| } |
| if (dss_has_feature(FEAT_ATTR2)) |
| SR(OVL_ATTRIBUTES2(i)); |
| } |
| |
| if (dss_has_feature(FEAT_CORE_CLK_DIV)) |
| SR(DIVISOR); |
| |
| dispc.ctx_valid = true; |
| |
| DSSDBG("context saved\n"); |
| } |
| |
| static void dispc_restore_context(void) |
| { |
| int i, j; |
| |
| DSSDBG("dispc_restore_context\n"); |
| |
| if (!dispc.ctx_valid) |
| return; |
| |
| /*RR(IRQENABLE);*/ |
| /*RR(CONTROL);*/ |
| RR(CONFIG); |
| RR(LINE_NUMBER); |
| if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) || |
| dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) |
| RR(GLOBAL_ALPHA); |
| if (dss_has_feature(FEAT_MGR_LCD2)) |
| RR(CONFIG2); |
| if (dss_has_feature(FEAT_MGR_LCD3)) |
| RR(CONFIG3); |
| |
| for (i = 0; i < dss_feat_get_num_mgrs(); i++) { |
| RR(DEFAULT_COLOR(i)); |
| RR(TRANS_COLOR(i)); |
| RR(SIZE_MGR(i)); |
| if (i == OMAP_DSS_CHANNEL_DIGIT) |
| continue; |
| RR(TIMING_H(i)); |
| RR(TIMING_V(i)); |
| RR(POL_FREQ(i)); |
| RR(DIVISORo(i)); |
| |
| RR(DATA_CYCLE1(i)); |
| RR(DATA_CYCLE2(i)); |
| RR(DATA_CYCLE3(i)); |
| |
| if (dss_has_feature(FEAT_CPR)) { |
| RR(CPR_COEF_R(i)); |
| RR(CPR_COEF_G(i)); |
| RR(CPR_COEF_B(i)); |
| } |
| } |
| |
| for (i = 0; i < dss_feat_get_num_ovls(); i++) { |
| RR(OVL_BA0(i)); |
| RR(OVL_BA1(i)); |
| RR(OVL_POSITION(i)); |
| RR(OVL_SIZE(i)); |
| RR(OVL_ATTRIBUTES(i)); |
| RR(OVL_FIFO_THRESHOLD(i)); |
| RR(OVL_ROW_INC(i)); |
| RR(OVL_PIXEL_INC(i)); |
| if (dss_has_feature(FEAT_PRELOAD)) |
| RR(OVL_PRELOAD(i)); |
| if (i == OMAP_DSS_GFX) { |
| RR(OVL_WINDOW_SKIP(i)); |
| RR(OVL_TABLE_BA(i)); |
| continue; |
| } |
| RR(OVL_FIR(i)); |
| RR(OVL_PICTURE_SIZE(i)); |
| RR(OVL_ACCU0(i)); |
| RR(OVL_ACCU1(i)); |
| |
| for (j = 0; j < 8; j++) |
| RR(OVL_FIR_COEF_H(i, j)); |
| |
| for (j = 0; j < 8; j++) |
| RR(OVL_FIR_COEF_HV(i, j)); |
| |
| for (j = 0; j < 5; j++) |
| RR(OVL_CONV_COEF(i, j)); |
| |
| if (dss_has_feature(FEAT_FIR_COEF_V)) { |
| for (j = 0; j < 8; j++) |
| RR(OVL_FIR_COEF_V(i, j)); |
| } |
| |
| if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { |
| RR(OVL_BA0_UV(i)); |
| RR(OVL_BA1_UV(i)); |
| RR(OVL_FIR2(i)); |
| RR(OVL_ACCU2_0(i)); |
| RR(OVL_ACCU2_1(i)); |
| |
| for (j = 0; j < 8; j++) |
| RR(OVL_FIR_COEF_H2(i, j)); |
| |
| for (j = 0; j < 8; j++) |
| RR(OVL_FIR_COEF_HV2(i, j)); |
| |
| for (j = 0; j < 8; j++) |
| RR(OVL_FIR_COEF_V2(i, j)); |
| } |
| if (dss_has_feature(FEAT_ATTR2)) |
| RR(OVL_ATTRIBUTES2(i)); |
| } |
| |
| if (dss_has_feature(FEAT_CORE_CLK_DIV)) |
| RR(DIVISOR); |
| |
| /* enable last, because LCD & DIGIT enable are here */ |
| RR(CONTROL); |
| if (dss_has_feature(FEAT_MGR_LCD2)) |
| RR(CONTROL2); |
| if (dss_has_feature(FEAT_MGR_LCD3)) |
| RR(CONTROL3); |
| /* clear spurious SYNC_LOST_DIGIT interrupts */ |
| dispc_clear_irqstatus(DISPC_IRQ_SYNC_LOST_DIGIT); |
| |
| /* |
| * enable last so IRQs won't trigger before |
| * the context is fully restored |
| */ |
| RR(IRQENABLE); |
| |
| DSSDBG("context restored\n"); |
| } |
| |
| #undef SR |
| #undef RR |
| |
| int dispc_runtime_get(void) |
| { |
| int r; |
| |
| DSSDBG("dispc_runtime_get\n"); |
| |
| r = pm_runtime_get_sync(&dispc.pdev->dev); |
| WARN_ON(r < 0); |
| return r < 0 ? r : 0; |
| } |
| EXPORT_SYMBOL(dispc_runtime_get); |
| |
| void dispc_runtime_put(void) |
| { |
| int r; |
| |
| DSSDBG("dispc_runtime_put\n"); |
| |
| r = pm_runtime_put_sync(&dispc.pdev->dev); |
| WARN_ON(r < 0 && r != -ENOSYS); |
| } |
| EXPORT_SYMBOL(dispc_runtime_put); |
| |
| u32 dispc_mgr_get_vsync_irq(enum omap_channel channel) |
| { |
| return mgr_desc[channel].vsync_irq; |
| } |
| EXPORT_SYMBOL(dispc_mgr_get_vsync_irq); |
| |
| u32 dispc_mgr_get_framedone_irq(enum omap_channel channel) |
| { |
| if (channel == OMAP_DSS_CHANNEL_DIGIT && dispc.feat->no_framedone_tv) |
| return 0; |
| |
| return mgr_desc[channel].framedone_irq; |
| } |
| EXPORT_SYMBOL(dispc_mgr_get_framedone_irq); |
| |
| u32 dispc_mgr_get_sync_lost_irq(enum omap_channel channel) |
| { |
| return mgr_desc[channel].sync_lost_irq; |
| } |
| EXPORT_SYMBOL(dispc_mgr_get_sync_lost_irq); |
| |
| u32 dispc_wb_get_framedone_irq(void) |
| { |
| return DISPC_IRQ_FRAMEDONEWB; |
| } |
| |
| void dispc_mgr_enable(enum omap_channel channel, bool enable) |
| { |
| mgr_fld_write(channel, DISPC_MGR_FLD_ENABLE, enable); |
| /* flush posted write */ |
| mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE); |
| } |
| EXPORT_SYMBOL(dispc_mgr_enable); |
| |
| static bool dispc_mgr_is_enabled(enum omap_channel channel) |
| { |
| return !!mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE); |
| } |
| |
| bool dispc_mgr_go_busy(enum omap_channel channel) |
| { |
| return mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1; |
| } |
| EXPORT_SYMBOL(dispc_mgr_go_busy); |
| |
| void dispc_mgr_go(enum omap_channel channel) |
| { |
| WARN_ON(!dispc_mgr_is_enabled(channel)); |
| WARN_ON(dispc_mgr_go_busy(channel)); |
| |
| DSSDBG("GO %s\n", mgr_desc[channel].name); |
| |
| mgr_fld_write(channel, DISPC_MGR_FLD_GO, 1); |
| } |
| EXPORT_SYMBOL(dispc_mgr_go); |
| |
| bool dispc_wb_go_busy(void) |
| { |
| return REG_GET(DISPC_CONTROL2, 6, 6) == 1; |
| } |
| |
| void dispc_wb_go(void) |
| { |
| enum omap_plane plane = OMAP_DSS_WB; |
| bool enable, go; |
| |
| enable = REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0) == 1; |
| |
| if (!enable) |
| return; |
| |
| go = REG_GET(DISPC_CONTROL2, 6, 6) == 1; |
| if (go) { |
| DSSERR("GO bit not down for WB\n"); |
| return; |
| } |
| |
| REG_FLD_MOD(DISPC_CONTROL2, 1, 6, 6); |
| } |
| |
| static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value) |
| { |
| dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value); |
| } |
| |
| static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value) |
| { |
| dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value); |
| } |
| |
| static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value) |
| { |
| dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value); |
| } |
| |
| static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value) |
| { |
| BUG_ON(plane == OMAP_DSS_GFX); |
| |
| dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value); |
| } |
| |
| static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg, |
| u32 value) |
| { |
| BUG_ON(plane == OMAP_DSS_GFX); |
| |
| dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value); |
| } |
| |
| static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value) |
| { |
| BUG_ON(plane == OMAP_DSS_GFX); |
| |
| dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value); |
| } |
| |
| static void dispc_ovl_set_scale_coef(enum omap_plane plane, int fir_hinc, |
| int fir_vinc, int five_taps, |
| enum omap_color_component color_comp) |
| { |
| const struct dispc_coef *h_coef, *v_coef; |
| int i; |
| |
| h_coef = dispc_ovl_get_scale_coef(fir_hinc, true); |
| v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps); |
| |
| for (i = 0; i < 8; i++) { |
| u32 h, hv; |
| |
| h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0) |
| | FLD_VAL(h_coef[i].hc1_vc0, 15, 8) |
| | FLD_VAL(h_coef[i].hc2_vc1, 23, 16) |
| | FLD_VAL(h_coef[i].hc3_vc2, 31, 24); |
| hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0) |
| | FLD_VAL(v_coef[i].hc1_vc0, 15, 8) |
| | FLD_VAL(v_coef[i].hc2_vc1, 23, 16) |
| | FLD_VAL(v_coef[i].hc3_vc2, 31, 24); |
| |
| if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) { |
| dispc_ovl_write_firh_reg(plane, i, h); |
| dispc_ovl_write_firhv_reg(plane, i, hv); |
| } else { |
| dispc_ovl_write_firh2_reg(plane, i, h); |
| dispc_ovl_write_firhv2_reg(plane, i, hv); |
| } |
| |
| } |
| |
| if (five_taps) { |
| for (i = 0; i < 8; i++) { |
| u32 v; |
| v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0) |
| | FLD_VAL(v_coef[i].hc4_vc22, 15, 8); |
| if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) |
| dispc_ovl_write_firv_reg(plane, i, v); |
| else |
| dispc_ovl_write_firv2_reg(plane, i, v); |
| } |
| } |
| } |
| |
| |
| static void dispc_ovl_write_color_conv_coef(enum omap_plane plane, |
| const struct color_conv_coef *ct) |
| { |
| #define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0)) |
| |
| dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry)); |
| dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb)); |
| dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr)); |
| dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by)); |
| dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb)); |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11); |
| |
| #undef CVAL |
| } |
| |
| static void dispc_setup_color_conv_coef(void) |
| { |
| int i; |
| int num_ovl = dss_feat_get_num_ovls(); |
| const struct color_conv_coef ctbl_bt601_5_ovl = { |
| /* YUV -> RGB */ |
| 298, 409, 0, 298, -208, -100, 298, 0, 517, 0, |
| }; |
| const struct color_conv_coef ctbl_bt601_5_wb = { |
| /* RGB -> YUV */ |
| 66, 129, 25, 112, -94, -18, -38, -74, 112, 0, |
| }; |
| |
| for (i = 1; i < num_ovl; i++) |
| dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_ovl); |
| |
| if (dispc.feat->has_writeback) |
| dispc_ovl_write_color_conv_coef(OMAP_DSS_WB, &ctbl_bt601_5_wb); |
| } |
| |
| static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr) |
| { |
| dispc_write_reg(DISPC_OVL_BA0(plane), paddr); |
| } |
| |
| static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr) |
| { |
| dispc_write_reg(DISPC_OVL_BA1(plane), paddr); |
| } |
| |
| static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr) |
| { |
| dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr); |
| } |
| |
| static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr) |
| { |
| dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr); |
| } |
| |
| static void dispc_ovl_set_pos(enum omap_plane plane, |
| enum omap_overlay_caps caps, int x, int y) |
| { |
| u32 val; |
| |
| if ((caps & OMAP_DSS_OVL_CAP_POS) == 0) |
| return; |
| |
| val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0); |
| |
| dispc_write_reg(DISPC_OVL_POSITION(plane), val); |
| } |
| |
| static void dispc_ovl_set_input_size(enum omap_plane plane, int width, |
| int height) |
| { |
| u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); |
| |
| if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB) |
| dispc_write_reg(DISPC_OVL_SIZE(plane), val); |
| else |
| dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val); |
| } |
| |
| static void dispc_ovl_set_output_size(enum omap_plane plane, int width, |
| int height) |
| { |
| u32 val; |
| |
| BUG_ON(plane == OMAP_DSS_GFX); |
| |
| val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); |
| |
| if (plane == OMAP_DSS_WB) |
| dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val); |
| else |
| dispc_write_reg(DISPC_OVL_SIZE(plane), val); |
| } |
| |
| static void dispc_ovl_set_zorder(enum omap_plane plane, |
| enum omap_overlay_caps caps, u8 zorder) |
| { |
| if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0) |
| return; |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26); |
| } |
| |
| static void dispc_ovl_enable_zorder_planes(void) |
| { |
| int i; |
| |
| if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) |
| return; |
| |
| for (i = 0; i < dss_feat_get_num_ovls(); i++) |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25); |
| } |
| |
| static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane, |
| enum omap_overlay_caps caps, bool enable) |
| { |
| if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0) |
| return; |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28); |
| } |
| |
| static void dispc_ovl_setup_global_alpha(enum omap_plane plane, |
| enum omap_overlay_caps caps, u8 global_alpha) |
| { |
| static const unsigned shifts[] = { 0, 8, 16, 24, }; |
| int shift; |
| |
| if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0) |
| return; |
| |
| shift = shifts[plane]; |
| REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift); |
| } |
| |
| static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc) |
| { |
| dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc); |
| } |
| |
| static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc) |
| { |
| dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc); |
| } |
| |
| static void dispc_ovl_set_color_mode(enum omap_plane plane, |
| enum omap_color_mode color_mode) |
| { |
| u32 m = 0; |
| if (plane != OMAP_DSS_GFX) { |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_NV12: |
| m = 0x0; break; |
| case OMAP_DSS_COLOR_RGBX16: |
| m = 0x1; break; |
| case OMAP_DSS_COLOR_RGBA16: |
| m = 0x2; break; |
| case OMAP_DSS_COLOR_RGB12U: |
| m = 0x4; break; |
| case OMAP_DSS_COLOR_ARGB16: |
| m = 0x5; break; |
| case OMAP_DSS_COLOR_RGB16: |
| m = 0x6; break; |
| case OMAP_DSS_COLOR_ARGB16_1555: |
| m = 0x7; break; |
| case OMAP_DSS_COLOR_RGB24U: |
| m = 0x8; break; |
| case OMAP_DSS_COLOR_RGB24P: |
| m = 0x9; break; |
| case OMAP_DSS_COLOR_YUV2: |
| m = 0xa; break; |
| case OMAP_DSS_COLOR_UYVY: |
| m = 0xb; break; |
| case OMAP_DSS_COLOR_ARGB32: |
| m = 0xc; break; |
| case OMAP_DSS_COLOR_RGBA32: |
| m = 0xd; break; |
| case OMAP_DSS_COLOR_RGBX32: |
| m = 0xe; break; |
| case OMAP_DSS_COLOR_XRGB16_1555: |
| m = 0xf; break; |
| default: |
| BUG(); return; |
| } |
| } else { |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_CLUT1: |
| m = 0x0; break; |
| case OMAP_DSS_COLOR_CLUT2: |
| m = 0x1; break; |
| case OMAP_DSS_COLOR_CLUT4: |
| m = 0x2; break; |
| case OMAP_DSS_COLOR_CLUT8: |
| m = 0x3; break; |
| case OMAP_DSS_COLOR_RGB12U: |
| m = 0x4; break; |
| case OMAP_DSS_COLOR_ARGB16: |
| m = 0x5; break; |
| case OMAP_DSS_COLOR_RGB16: |
| m = 0x6; break; |
| case OMAP_DSS_COLOR_ARGB16_1555: |
| m = 0x7; break; |
| case OMAP_DSS_COLOR_RGB24U: |
| m = 0x8; break; |
| case OMAP_DSS_COLOR_RGB24P: |
| m = 0x9; break; |
| case OMAP_DSS_COLOR_RGBX16: |
| m = 0xa; break; |
| case OMAP_DSS_COLOR_RGBA16: |
| m = 0xb; break; |
| case OMAP_DSS_COLOR_ARGB32: |
| m = 0xc; break; |
| case OMAP_DSS_COLOR_RGBA32: |
| m = 0xd; break; |
| case OMAP_DSS_COLOR_RGBX32: |
| m = 0xe; break; |
| case OMAP_DSS_COLOR_XRGB16_1555: |
| m = 0xf; break; |
| default: |
| BUG(); return; |
| } |
| } |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1); |
| } |
| |
| static void dispc_ovl_configure_burst_type(enum omap_plane plane, |
| enum omap_dss_rotation_type rotation_type) |
| { |
| if (dss_has_feature(FEAT_BURST_2D) == 0) |
| return; |
| |
| if (rotation_type == OMAP_DSS_ROT_TILER) |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29); |
| else |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29); |
| } |
| |
| void dispc_ovl_set_channel_out(enum omap_plane plane, enum omap_channel channel) |
| { |
| int shift; |
| u32 val; |
| int chan = 0, chan2 = 0; |
| |
| switch (plane) { |
| case OMAP_DSS_GFX: |
| shift = 8; |
| break; |
| case OMAP_DSS_VIDEO1: |
| case OMAP_DSS_VIDEO2: |
| case OMAP_DSS_VIDEO3: |
| shift = 16; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); |
| if (dss_has_feature(FEAT_MGR_LCD2)) { |
| switch (channel) { |
| case OMAP_DSS_CHANNEL_LCD: |
| chan = 0; |
| chan2 = 0; |
| break; |
| case OMAP_DSS_CHANNEL_DIGIT: |
| chan = 1; |
| chan2 = 0; |
| break; |
| case OMAP_DSS_CHANNEL_LCD2: |
| chan = 0; |
| chan2 = 1; |
| break; |
| case OMAP_DSS_CHANNEL_LCD3: |
| if (dss_has_feature(FEAT_MGR_LCD3)) { |
| chan = 0; |
| chan2 = 2; |
| } else { |
| BUG(); |
| return; |
| } |
| break; |
| case OMAP_DSS_CHANNEL_WB: |
| chan = 0; |
| chan2 = 3; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| val = FLD_MOD(val, chan, shift, shift); |
| val = FLD_MOD(val, chan2, 31, 30); |
| } else { |
| val = FLD_MOD(val, channel, shift, shift); |
| } |
| dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val); |
| } |
| EXPORT_SYMBOL(dispc_ovl_set_channel_out); |
| |
| static enum omap_channel dispc_ovl_get_channel_out(enum omap_plane plane) |
| { |
| int shift; |
| u32 val; |
| |
| switch (plane) { |
| case OMAP_DSS_GFX: |
| shift = 8; |
| break; |
| case OMAP_DSS_VIDEO1: |
| case OMAP_DSS_VIDEO2: |
| case OMAP_DSS_VIDEO3: |
| shift = 16; |
| break; |
| default: |
| BUG(); |
| return 0; |
| } |
| |
| val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); |
| |
| if (FLD_GET(val, shift, shift) == 1) |
| return OMAP_DSS_CHANNEL_DIGIT; |
| |
| if (!dss_has_feature(FEAT_MGR_LCD2)) |
| return OMAP_DSS_CHANNEL_LCD; |
| |
| switch (FLD_GET(val, 31, 30)) { |
| case 0: |
| default: |
| return OMAP_DSS_CHANNEL_LCD; |
| case 1: |
| return OMAP_DSS_CHANNEL_LCD2; |
| case 2: |
| return OMAP_DSS_CHANNEL_LCD3; |
| case 3: |
| return OMAP_DSS_CHANNEL_WB; |
| } |
| } |
| |
| void dispc_wb_set_channel_in(enum dss_writeback_channel channel) |
| { |
| enum omap_plane plane = OMAP_DSS_WB; |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), channel, 18, 16); |
| } |
| |
| static void dispc_ovl_set_burst_size(enum omap_plane plane, |
| enum omap_burst_size burst_size) |
| { |
| static const unsigned shifts[] = { 6, 14, 14, 14, 14, }; |
| int shift; |
| |
| shift = shifts[plane]; |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift); |
| } |
| |
| static void dispc_configure_burst_sizes(void) |
| { |
| int i; |
| const int burst_size = BURST_SIZE_X8; |
| |
| /* Configure burst size always to maximum size */ |
| for (i = 0; i < dss_feat_get_num_ovls(); ++i) |
| dispc_ovl_set_burst_size(i, burst_size); |
| if (dispc.feat->has_writeback) |
| dispc_ovl_set_burst_size(OMAP_DSS_WB, burst_size); |
| } |
| |
| static u32 dispc_ovl_get_burst_size(enum omap_plane plane) |
| { |
| unsigned unit = dss_feat_get_burst_size_unit(); |
| /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */ |
| return unit * 8; |
| } |
| |
| static void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable) |
| { |
| if (channel == OMAP_DSS_CHANNEL_DIGIT) |
| return; |
| |
| mgr_fld_write(channel, DISPC_MGR_FLD_CPR, enable); |
| } |
| |
| static void dispc_mgr_set_cpr_coef(enum omap_channel channel, |
| const struct omap_dss_cpr_coefs *coefs) |
| { |
| u32 coef_r, coef_g, coef_b; |
| |
| if (!dss_mgr_is_lcd(channel)) |
| return; |
| |
| coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) | |
| FLD_VAL(coefs->rb, 9, 0); |
| coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) | |
| FLD_VAL(coefs->gb, 9, 0); |
| coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) | |
| FLD_VAL(coefs->bb, 9, 0); |
| |
| dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r); |
| dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g); |
| dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b); |
| } |
| |
| static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable) |
| { |
| u32 val; |
| |
| BUG_ON(plane == OMAP_DSS_GFX); |
| |
| val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); |
| val = FLD_MOD(val, enable, 9, 9); |
| dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val); |
| } |
| |
| static void dispc_ovl_enable_replication(enum omap_plane plane, |
| enum omap_overlay_caps caps, bool enable) |
| { |
| static const unsigned shifts[] = { 5, 10, 10, 10 }; |
| int shift; |
| |
| if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0) |
| return; |
| |
| shift = shifts[plane]; |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift); |
| } |
| |
| static void dispc_mgr_set_size(enum omap_channel channel, u16 width, |
| u16 height) |
| { |
| u32 val; |
| |
| val = FLD_VAL(height - 1, dispc.feat->mgr_height_start, 16) | |
| FLD_VAL(width - 1, dispc.feat->mgr_width_start, 0); |
| |
| dispc_write_reg(DISPC_SIZE_MGR(channel), val); |
| } |
| |
| static void dispc_init_fifos(void) |
| { |
| u32 size; |
| int fifo; |
| u8 start, end; |
| u32 unit; |
| int i; |
| |
| unit = dss_feat_get_buffer_size_unit(); |
| |
| dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end); |
| |
| for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) { |
| size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(fifo), start, end); |
| size *= unit; |
| dispc.fifo_size[fifo] = size; |
| |
| /* |
| * By default fifos are mapped directly to overlays, fifo 0 to |
| * ovl 0, fifo 1 to ovl 1, etc. |
| */ |
| dispc.fifo_assignment[fifo] = fifo; |
| } |
| |
| /* |
| * The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo |
| * causes problems with certain use cases, like using the tiler in 2D |
| * mode. The below hack swaps the fifos of GFX and WB planes, thus |
| * giving GFX plane a larger fifo. WB but should work fine with a |
| * smaller fifo. |
| */ |
| if (dispc.feat->gfx_fifo_workaround) { |
| u32 v; |
| |
| v = dispc_read_reg(DISPC_GLOBAL_BUFFER); |
| |
| v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */ |
| v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */ |
| v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */ |
| v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */ |
| |
| dispc_write_reg(DISPC_GLOBAL_BUFFER, v); |
| |
| dispc.fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB; |
| dispc.fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX; |
| } |
| |
| /* |
| * Setup default fifo thresholds. |
| */ |
| for (i = 0; i < dss_feat_get_num_ovls(); ++i) { |
| u32 low, high; |
| const bool use_fifomerge = false; |
| const bool manual_update = false; |
| |
| dispc_ovl_compute_fifo_thresholds(i, &low, &high, |
| use_fifomerge, manual_update); |
| |
| dispc_ovl_set_fifo_threshold(i, low, high); |
| } |
| |
| if (dispc.feat->has_writeback) { |
| u32 low, high; |
| const bool use_fifomerge = false; |
| const bool manual_update = false; |
| |
| dispc_ovl_compute_fifo_thresholds(OMAP_DSS_WB, &low, &high, |
| use_fifomerge, manual_update); |
| |
| dispc_ovl_set_fifo_threshold(OMAP_DSS_WB, low, high); |
| } |
| } |
| |
| static u32 dispc_ovl_get_fifo_size(enum omap_plane plane) |
| { |
| int fifo; |
| u32 size = 0; |
| |
| for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) { |
| if (dispc.fifo_assignment[fifo] == plane) |
| size += dispc.fifo_size[fifo]; |
| } |
| |
| return size; |
| } |
| |
| void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high) |
| { |
| u8 hi_start, hi_end, lo_start, lo_end; |
| u32 unit; |
| |
| unit = dss_feat_get_buffer_size_unit(); |
| |
| WARN_ON(low % unit != 0); |
| WARN_ON(high % unit != 0); |
| |
| low /= unit; |
| high /= unit; |
| |
| dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end); |
| dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end); |
| |
| DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n", |
| plane, |
| REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane), |
| lo_start, lo_end) * unit, |
| REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane), |
| hi_start, hi_end) * unit, |
| low * unit, high * unit); |
| |
| dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane), |
| FLD_VAL(high, hi_start, hi_end) | |
| FLD_VAL(low, lo_start, lo_end)); |
| |
| /* |
| * configure the preload to the pipeline's high threhold, if HT it's too |
| * large for the preload field, set the threshold to the maximum value |
| * that can be held by the preload register |
| */ |
| if (dss_has_feature(FEAT_PRELOAD) && dispc.feat->set_max_preload && |
| plane != OMAP_DSS_WB) |
| dispc_write_reg(DISPC_OVL_PRELOAD(plane), min(high, 0xfffu)); |
| } |
| |
| void dispc_enable_fifomerge(bool enable) |
| { |
| if (!dss_has_feature(FEAT_FIFO_MERGE)) { |
| WARN_ON(enable); |
| return; |
| } |
| |
| DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled"); |
| REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14); |
| } |
| |
| void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane, |
| u32 *fifo_low, u32 *fifo_high, bool use_fifomerge, |
| bool manual_update) |
| { |
| /* |
| * All sizes are in bytes. Both the buffer and burst are made of |
| * buffer_units, and the fifo thresholds must be buffer_unit aligned. |
| */ |
| |
| unsigned buf_unit = dss_feat_get_buffer_size_unit(); |
| unsigned ovl_fifo_size, total_fifo_size, burst_size; |
| int i; |
| |
| burst_size = dispc_ovl_get_burst_size(plane); |
| ovl_fifo_size = dispc_ovl_get_fifo_size(plane); |
| |
| if (use_fifomerge) { |
| total_fifo_size = 0; |
| for (i = 0; i < dss_feat_get_num_ovls(); ++i) |
| total_fifo_size += dispc_ovl_get_fifo_size(i); |
| } else { |
| total_fifo_size = ovl_fifo_size; |
| } |
| |
| /* |
| * We use the same low threshold for both fifomerge and non-fifomerge |
| * cases, but for fifomerge we calculate the high threshold using the |
| * combined fifo size |
| */ |
| |
| if (manual_update && dss_has_feature(FEAT_OMAP3_DSI_FIFO_BUG)) { |
| *fifo_low = ovl_fifo_size - burst_size * 2; |
| *fifo_high = total_fifo_size - burst_size; |
| } else if (plane == OMAP_DSS_WB) { |
| /* |
| * Most optimal configuration for writeback is to push out data |
| * to the interconnect the moment writeback pushes enough pixels |
| * in the FIFO to form a burst |
| */ |
| *fifo_low = 0; |
| *fifo_high = burst_size; |
| } else { |
| *fifo_low = ovl_fifo_size - burst_size; |
| *fifo_high = total_fifo_size - buf_unit; |
| } |
| } |
| |
| static void dispc_ovl_set_mflag(enum omap_plane plane, bool enable) |
| { |
| int bit; |
| |
| if (plane == OMAP_DSS_GFX) |
| bit = 14; |
| else |
| bit = 23; |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, bit, bit); |
| } |
| |
| static void dispc_ovl_set_mflag_threshold(enum omap_plane plane, |
| int low, int high) |
| { |
| dispc_write_reg(DISPC_OVL_MFLAG_THRESHOLD(plane), |
| FLD_VAL(high, 31, 16) | FLD_VAL(low, 15, 0)); |
| } |
| |
| static void dispc_init_mflag(void) |
| { |
| int i; |
| |
| /* |
| * HACK: NV12 color format and MFLAG seem to have problems working |
| * together: using two displays, and having an NV12 overlay on one of |
| * the displays will cause underflows/synclosts when MFLAG_CTRL=2. |
| * Changing MFLAG thresholds and PRELOAD to certain values seem to |
| * remove the errors, but there doesn't seem to be a clear logic on |
| * which values work and which not. |
| * |
| * As a work-around, set force MFLAG to always on. |
| */ |
| dispc_write_reg(DISPC_GLOBAL_MFLAG_ATTRIBUTE, |
| (1 << 0) | /* MFLAG_CTRL = force always on */ |
| (0 << 2)); /* MFLAG_START = disable */ |
| |
| for (i = 0; i < dss_feat_get_num_ovls(); ++i) { |
| u32 size = dispc_ovl_get_fifo_size(i); |
| u32 unit = dss_feat_get_buffer_size_unit(); |
| u32 low, high; |
| |
| dispc_ovl_set_mflag(i, true); |
| |
| /* |
| * Simulation team suggests below thesholds: |
| * HT = fifosize * 5 / 8; |
| * LT = fifosize * 4 / 8; |
| */ |
| |
| low = size * 4 / 8 / unit; |
| high = size * 5 / 8 / unit; |
| |
| dispc_ovl_set_mflag_threshold(i, low, high); |
| } |
| |
| if (dispc.feat->has_writeback) { |
| u32 size = dispc_ovl_get_fifo_size(OMAP_DSS_WB); |
| u32 unit = dss_feat_get_buffer_size_unit(); |
| u32 low, high; |
| |
| dispc_ovl_set_mflag(OMAP_DSS_WB, true); |
| |
| /* |
| * Simulation team suggests below thesholds: |
| * HT = fifosize * 5 / 8; |
| * LT = fifosize * 4 / 8; |
| */ |
| |
| low = size * 4 / 8 / unit; |
| high = size * 5 / 8 / unit; |
| |
| dispc_ovl_set_mflag_threshold(OMAP_DSS_WB, low, high); |
| } |
| } |
| |
| static void dispc_ovl_set_fir(enum omap_plane plane, |
| int hinc, int vinc, |
| enum omap_color_component color_comp) |
| { |
| u32 val; |
| |
| if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) { |
| u8 hinc_start, hinc_end, vinc_start, vinc_end; |
| |
| dss_feat_get_reg_field(FEAT_REG_FIRHINC, |
| &hinc_start, &hinc_end); |
| dss_feat_get_reg_field(FEAT_REG_FIRVINC, |
| &vinc_start, &vinc_end); |
| val = FLD_VAL(vinc, vinc_start, vinc_end) | |
| FLD_VAL(hinc, hinc_start, hinc_end); |
| |
| dispc_write_reg(DISPC_OVL_FIR(plane), val); |
| } else { |
| val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0); |
| dispc_write_reg(DISPC_OVL_FIR2(plane), val); |
| } |
| } |
| |
| static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu) |
| { |
| u32 val; |
| u8 hor_start, hor_end, vert_start, vert_end; |
| |
| dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end); |
| dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end); |
| |
| val = FLD_VAL(vaccu, vert_start, vert_end) | |
| FLD_VAL(haccu, hor_start, hor_end); |
| |
| dispc_write_reg(DISPC_OVL_ACCU0(plane), val); |
| } |
| |
| static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu) |
| { |
| u32 val; |
| u8 hor_start, hor_end, vert_start, vert_end; |
| |
| dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end); |
| dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end); |
| |
| val = FLD_VAL(vaccu, vert_start, vert_end) | |
| FLD_VAL(haccu, hor_start, hor_end); |
| |
| dispc_write_reg(DISPC_OVL_ACCU1(plane), val); |
| } |
| |
| static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu, |
| int vaccu) |
| { |
| u32 val; |
| |
| val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0); |
| dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val); |
| } |
| |
| static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu, |
| int vaccu) |
| { |
| u32 val; |
| |
| val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0); |
| dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val); |
| } |
| |
| static void dispc_ovl_set_scale_param(enum omap_plane plane, |
| u16 orig_width, u16 orig_height, |
| u16 out_width, u16 out_height, |
| bool five_taps, u8 rotation, |
| enum omap_color_component color_comp) |
| { |
| int fir_hinc, fir_vinc; |
| |
| fir_hinc = 1024 * orig_width / out_width; |
| fir_vinc = 1024 * orig_height / out_height; |
| |
| dispc_ovl_set_scale_coef(plane, fir_hinc, fir_vinc, five_taps, |
| color_comp); |
| dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp); |
| } |
| |
| static void dispc_ovl_set_accu_uv(enum omap_plane plane, |
| u16 orig_width, u16 orig_height, u16 out_width, u16 out_height, |
| bool ilace, enum omap_color_mode color_mode, u8 rotation) |
| { |
| int h_accu2_0, h_accu2_1; |
| int v_accu2_0, v_accu2_1; |
| int chroma_hinc, chroma_vinc; |
| int idx; |
| |
| struct accu { |
| s8 h0_m, h0_n; |
| s8 h1_m, h1_n; |
| s8 v0_m, v0_n; |
| s8 v1_m, v1_n; |
| }; |
| |
| const struct accu *accu_table; |
| const struct accu *accu_val; |
| |
| static const struct accu accu_nv12[4] = { |
| { 0, 1, 0, 1 , -1, 2, 0, 1 }, |
| { 1, 2, -3, 4 , 0, 1, 0, 1 }, |
| { -1, 1, 0, 1 , -1, 2, 0, 1 }, |
| { -1, 2, -1, 2 , -1, 1, 0, 1 }, |
| }; |
| |
| static const struct accu accu_nv12_ilace[4] = { |
| { 0, 1, 0, 1 , -3, 4, -1, 4 }, |
| { -1, 4, -3, 4 , 0, 1, 0, 1 }, |
| { -1, 1, 0, 1 , -1, 4, -3, 4 }, |
| { -3, 4, -3, 4 , -1, 1, 0, 1 }, |
| }; |
| |
| static const struct accu accu_yuv[4] = { |
| { 0, 1, 0, 1, 0, 1, 0, 1 }, |
| { 0, 1, 0, 1, 0, 1, 0, 1 }, |
| { -1, 1, 0, 1, 0, 1, 0, 1 }, |
| { 0, 1, 0, 1, -1, 1, 0, 1 }, |
| }; |
| |
| switch (rotation) { |
| case OMAP_DSS_ROT_0: |
| idx = 0; |
| break; |
| case OMAP_DSS_ROT_90: |
| idx = 1; |
| break; |
| case OMAP_DSS_ROT_180: |
| idx = 2; |
| break; |
| case OMAP_DSS_ROT_270: |
| idx = 3; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_NV12: |
| if (ilace) |
| accu_table = accu_nv12_ilace; |
| else |
| accu_table = accu_nv12; |
| break; |
| case OMAP_DSS_COLOR_YUV2: |
| case OMAP_DSS_COLOR_UYVY: |
| accu_table = accu_yuv; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| accu_val = &accu_table[idx]; |
| |
| chroma_hinc = 1024 * orig_width / out_width; |
| chroma_vinc = 1024 * orig_height / out_height; |
| |
| h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024; |
| h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024; |
| v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024; |
| v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024; |
| |
| dispc_ovl_set_vid_accu2_0(plane, h_accu2_0, v_accu2_0); |
| dispc_ovl_set_vid_accu2_1(plane, h_accu2_1, v_accu2_1); |
| } |
| |
| static void dispc_ovl_set_scaling_common(enum omap_plane plane, |
| u16 orig_width, u16 orig_height, |
| u16 out_width, u16 out_height, |
| bool ilace, bool five_taps, |
| bool fieldmode, enum omap_color_mode color_mode, |
| u8 rotation) |
| { |
| int accu0 = 0; |
| int accu1 = 0; |
| u32 l; |
| |
| dispc_ovl_set_scale_param(plane, orig_width, orig_height, |
| out_width, out_height, five_taps, |
| rotation, DISPC_COLOR_COMPONENT_RGB_Y); |
| l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); |
| |
| /* RESIZEENABLE and VERTICALTAPS */ |
| l &= ~((0x3 << 5) | (0x1 << 21)); |
| l |= (orig_width != out_width) ? (1 << 5) : 0; |
| l |= (orig_height != out_height) ? (1 << 6) : 0; |
| l |= five_taps ? (1 << 21) : 0; |
| |
| /* VRESIZECONF and HRESIZECONF */ |
| if (dss_has_feature(FEAT_RESIZECONF)) { |
| l &= ~(0x3 << 7); |
| l |= (orig_width <= out_width) ? 0 : (1 << 7); |
| l |= (orig_height <= out_height) ? 0 : (1 << 8); |
| } |
| |
| /* LINEBUFFERSPLIT */ |
| if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) { |
| l &= ~(0x1 << 22); |
| l |= five_taps ? (1 << 22) : 0; |
| } |
| |
| dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l); |
| |
| /* |
| * field 0 = even field = bottom field |
| * field 1 = odd field = top field |
| */ |
| if (ilace && !fieldmode) { |
| accu1 = 0; |
| accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff; |
| if (accu0 >= 1024/2) { |
| accu1 = 1024/2; |
| accu0 -= accu1; |
| } |
| } |
| |
| dispc_ovl_set_vid_accu0(plane, 0, accu0); |
| dispc_ovl_set_vid_accu1(plane, 0, accu1); |
| } |
| |
| static void dispc_ovl_set_scaling_uv(enum omap_plane plane, |
| u16 orig_width, u16 orig_height, |
| u16 out_width, u16 out_height, |
| bool ilace, bool five_taps, |
| bool fieldmode, enum omap_color_mode color_mode, |
| u8 rotation) |
| { |
| int scale_x = out_width != orig_width; |
| int scale_y = out_height != orig_height; |
| bool chroma_upscale = plane != OMAP_DSS_WB; |
| |
| if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) |
| return; |
| if ((color_mode != OMAP_DSS_COLOR_YUV2 && |
| color_mode != OMAP_DSS_COLOR_UYVY && |
| color_mode != OMAP_DSS_COLOR_NV12)) { |
| /* reset chroma resampling for RGB formats */ |
| if (plane != OMAP_DSS_WB) |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8); |
| return; |
| } |
| |
| dispc_ovl_set_accu_uv(plane, orig_width, orig_height, out_width, |
| out_height, ilace, color_mode, rotation); |
| |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_NV12: |
| if (chroma_upscale) { |
| /* UV is subsampled by 2 horizontally and vertically */ |
| orig_height >>= 1; |
| orig_width >>= 1; |
| } else { |
| /* UV is downsampled by 2 horizontally and vertically */ |
| orig_height <<= 1; |
| orig_width <<= 1; |
| } |
| |
| break; |
| case OMAP_DSS_COLOR_YUV2: |
| case OMAP_DSS_COLOR_UYVY: |
| /* For YUV422 with 90/270 rotation, we don't upsample chroma */ |
| if (rotation == OMAP_DSS_ROT_0 || |
| rotation == OMAP_DSS_ROT_180) { |
| if (chroma_upscale) |
| /* UV is subsampled by 2 horizontally */ |
| orig_width >>= 1; |
| else |
| /* UV is downsampled by 2 horizontally */ |
| orig_width <<= 1; |
| } |
| |
| /* must use FIR for YUV422 if rotated */ |
| if (rotation != OMAP_DSS_ROT_0) |
| scale_x = scale_y = true; |
| |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| if (out_width != orig_width) |
| scale_x = true; |
| if (out_height != orig_height) |
| scale_y = true; |
| |
| dispc_ovl_set_scale_param(plane, orig_width, orig_height, |
| out_width, out_height, five_taps, |
| rotation, DISPC_COLOR_COMPONENT_UV); |
| |
| if (plane != OMAP_DSS_WB) |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), |
| (scale_x || scale_y) ? 1 : 0, 8, 8); |
| |
| /* set H scaling */ |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5); |
| /* set V scaling */ |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6); |
| } |
| |
| static void dispc_ovl_set_scaling(enum omap_plane plane, |
| u16 orig_width, u16 orig_height, |
| u16 out_width, u16 out_height, |
| bool ilace, bool five_taps, |
| bool fieldmode, enum omap_color_mode color_mode, |
| u8 rotation) |
| { |
| BUG_ON(plane == OMAP_DSS_GFX); |
| |
| dispc_ovl_set_scaling_common(plane, |
| orig_width, orig_height, |
| out_width, out_height, |
| ilace, five_taps, |
| fieldmode, color_mode, |
| rotation); |
| |
| dispc_ovl_set_scaling_uv(plane, |
| orig_width, orig_height, |
| out_width, out_height, |
| ilace, five_taps, |
| fieldmode, color_mode, |
| rotation); |
| } |
| |
| static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation, |
| enum omap_dss_rotation_type rotation_type, |
| bool mirroring, enum omap_color_mode color_mode) |
| { |
| bool row_repeat = false; |
| int vidrot = 0; |
| |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) { |
| |
| if (mirroring) { |
| switch (rotation) { |
| case OMAP_DSS_ROT_0: |
| vidrot = 2; |
| break; |
| case OMAP_DSS_ROT_90: |
| vidrot = 1; |
| break; |
| case OMAP_DSS_ROT_180: |
| vidrot = 0; |
| break; |
| case OMAP_DSS_ROT_270: |
| vidrot = 3; |
| break; |
| } |
| } else { |
| switch (rotation) { |
| case OMAP_DSS_ROT_0: |
| vidrot = 0; |
| break; |
| case OMAP_DSS_ROT_90: |
| vidrot = 1; |
| break; |
| case OMAP_DSS_ROT_180: |
| vidrot = 2; |
| break; |
| case OMAP_DSS_ROT_270: |
| vidrot = 3; |
| break; |
| } |
| } |
| |
| if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270) |
| row_repeat = true; |
| else |
| row_repeat = false; |
| } |
| |
| /* |
| * OMAP4/5 Errata i631: |
| * NV12 in 1D mode must use ROTATION=1. Otherwise DSS will fetch extra |
| * rows beyond the framebuffer, which may cause OCP error. |
| */ |
| if (color_mode == OMAP_DSS_COLOR_NV12 && |
| rotation_type != OMAP_DSS_ROT_TILER) |
| vidrot = 1; |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12); |
| if (dss_has_feature(FEAT_ROWREPEATENABLE)) |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), |
| row_repeat ? 1 : 0, 18, 18); |
| |
| if (color_mode == OMAP_DSS_COLOR_NV12) { |
| bool doublestride = (rotation_type == OMAP_DSS_ROT_TILER) && |
| (rotation == OMAP_DSS_ROT_0 || |
| rotation == OMAP_DSS_ROT_180); |
| /* DOUBLESTRIDE */ |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), doublestride, 22, 22); |
| } |
| |
| } |
| |
| static int color_mode_to_bpp(enum omap_color_mode color_mode) |
| { |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_CLUT1: |
| return 1; |
| case OMAP_DSS_COLOR_CLUT2: |
| return 2; |
| case OMAP_DSS_COLOR_CLUT4: |
| return 4; |
| case OMAP_DSS_COLOR_CLUT8: |
| case OMAP_DSS_COLOR_NV12: |
| return 8; |
| case OMAP_DSS_COLOR_RGB12U: |
| case OMAP_DSS_COLOR_RGB16: |
| case OMAP_DSS_COLOR_ARGB16: |
| case OMAP_DSS_COLOR_YUV2: |
| case OMAP_DSS_COLOR_UYVY: |
| case OMAP_DSS_COLOR_RGBA16: |
| case OMAP_DSS_COLOR_RGBX16: |
| case OMAP_DSS_COLOR_ARGB16_1555: |
| case OMAP_DSS_COLOR_XRGB16_1555: |
| return 16; |
| case OMAP_DSS_COLOR_RGB24P: |
| return 24; |
| case OMAP_DSS_COLOR_RGB24U: |
| case OMAP_DSS_COLOR_ARGB32: |
| case OMAP_DSS_COLOR_RGBA32: |
| case OMAP_DSS_COLOR_RGBX32: |
| return 32; |
| default: |
| BUG(); |
| return 0; |
| } |
| } |
| |
| static s32 pixinc(int pixels, u8 ps) |
| { |
| if (pixels == 1) |
| return 1; |
| else if (pixels > 1) |
| return 1 + (pixels - 1) * ps; |
| else if (pixels < 0) |
| return 1 - (-pixels + 1) * ps; |
| else |
| BUG(); |
| return 0; |
| } |
| |
| static void calc_vrfb_rotation_offset(u8 rotation, bool mirror, |
| u16 screen_width, |
| u16 width, u16 height, |
| enum omap_color_mode color_mode, bool fieldmode, |
| unsigned int field_offset, |
| unsigned *offset0, unsigned *offset1, |
| s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim) |
| { |
| u8 ps; |
| |
| /* FIXME CLUT formats */ |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_CLUT1: |
| case OMAP_DSS_COLOR_CLUT2: |
| case OMAP_DSS_COLOR_CLUT4: |
| case OMAP_DSS_COLOR_CLUT8: |
| BUG(); |
| return; |
| case OMAP_DSS_COLOR_YUV2: |
| case OMAP_DSS_COLOR_UYVY: |
| ps = 4; |
| break; |
| default: |
| ps = color_mode_to_bpp(color_mode) / 8; |
| break; |
| } |
| |
| DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width, |
| width, height); |
| |
| /* |
| * field 0 = even field = bottom field |
| * field 1 = odd field = top field |
| */ |
| switch (rotation + mirror * 4) { |
| case OMAP_DSS_ROT_0: |
| case OMAP_DSS_ROT_180: |
| /* |
| * If the pixel format is YUV or UYVY divide the width |
| * of the image by 2 for 0 and 180 degree rotation. |
| */ |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| width = width >> 1; |
| case OMAP_DSS_ROT_90: |
| case OMAP_DSS_ROT_270: |
| *offset1 = 0; |
| if (field_offset) |
| *offset0 = field_offset * screen_width * ps; |
| else |
| *offset0 = 0; |
| |
| *row_inc = pixinc(1 + |
| (y_predecim * screen_width - x_predecim * width) + |
| (fieldmode ? screen_width : 0), ps); |
| *pix_inc = pixinc(x_predecim, ps); |
| break; |
| |
| case OMAP_DSS_ROT_0 + 4: |
| case OMAP_DSS_ROT_180 + 4: |
| /* If the pixel format is YUV or UYVY divide the width |
| * of the image by 2 for 0 degree and 180 degree |
| */ |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| width = width >> 1; |
| case OMAP_DSS_ROT_90 + 4: |
| case OMAP_DSS_ROT_270 + 4: |
| *offset1 = 0; |
| if (field_offset) |
| *offset0 = field_offset * screen_width * ps; |
| else |
| *offset0 = 0; |
| *row_inc = pixinc(1 - |
| (y_predecim * screen_width + x_predecim * width) - |
| (fieldmode ? screen_width : 0), ps); |
| *pix_inc = pixinc(x_predecim, ps); |
| break; |
| |
| default: |
| BUG(); |
| return; |
| } |
| } |
| |
| static void calc_dma_rotation_offset(u8 rotation, bool mirror, |
| u16 screen_width, |
| u16 width, u16 height, |
| enum omap_color_mode color_mode, bool fieldmode, |
| unsigned int field_offset, |
| unsigned *offset0, unsigned *offset1, |
| s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim) |
| { |
| u8 ps; |
| u16 fbw, fbh; |
| |
| /* FIXME CLUT formats */ |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_CLUT1: |
| case OMAP_DSS_COLOR_CLUT2: |
| case OMAP_DSS_COLOR_CLUT4: |
| case OMAP_DSS_COLOR_CLUT8: |
| BUG(); |
| return; |
| default: |
| ps = color_mode_to_bpp(color_mode) / 8; |
| break; |
| } |
| |
| DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width, |
| width, height); |
| |
| /* width & height are overlay sizes, convert to fb sizes */ |
| |
| if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) { |
| fbw = width; |
| fbh = height; |
| } else { |
| fbw = height; |
| fbh = width; |
| } |
| |
| /* |
| * field 0 = even field = bottom field |
| * field 1 = odd field = top field |
| */ |
| switch (rotation + mirror * 4) { |
| case OMAP_DSS_ROT_0: |
| *offset1 = 0; |
| if (field_offset) |
| *offset0 = *offset1 + field_offset * screen_width * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(1 + |
| (y_predecim * screen_width - fbw * x_predecim) + |
| (fieldmode ? screen_width : 0), ps); |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| *pix_inc = pixinc(x_predecim, 2 * ps); |
| else |
| *pix_inc = pixinc(x_predecim, ps); |
| break; |
| case OMAP_DSS_ROT_90: |
| *offset1 = screen_width * (fbh - 1) * ps; |
| if (field_offset) |
| *offset0 = *offset1 + field_offset * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) + |
| y_predecim + (fieldmode ? 1 : 0), ps); |
| *pix_inc = pixinc(-x_predecim * screen_width, ps); |
| break; |
| case OMAP_DSS_ROT_180: |
| *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps; |
| if (field_offset) |
| *offset0 = *offset1 - field_offset * screen_width * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(-1 - |
| (y_predecim * screen_width - fbw * x_predecim) - |
| (fieldmode ? screen_width : 0), ps); |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| *pix_inc = pixinc(-x_predecim, 2 * ps); |
| else |
| *pix_inc = pixinc(-x_predecim, ps); |
| break; |
| case OMAP_DSS_ROT_270: |
| *offset1 = (fbw - 1) * ps; |
| if (field_offset) |
| *offset0 = *offset1 - field_offset * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) - |
| y_predecim - (fieldmode ? 1 : 0), ps); |
| *pix_inc = pixinc(x_predecim * screen_width, ps); |
| break; |
| |
| /* mirroring */ |
| case OMAP_DSS_ROT_0 + 4: |
| *offset1 = (fbw - 1) * ps; |
| if (field_offset) |
| *offset0 = *offset1 + field_offset * screen_width * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(y_predecim * screen_width * 2 - 1 + |
| (fieldmode ? screen_width : 0), |
| ps); |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| *pix_inc = pixinc(-x_predecim, 2 * ps); |
| else |
| *pix_inc = pixinc(-x_predecim, ps); |
| break; |
| |
| case OMAP_DSS_ROT_90 + 4: |
| *offset1 = 0; |
| if (field_offset) |
| *offset0 = *offset1 + field_offset * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) + |
| y_predecim + (fieldmode ? 1 : 0), |
| ps); |
| *pix_inc = pixinc(x_predecim * screen_width, ps); |
| break; |
| |
| case OMAP_DSS_ROT_180 + 4: |
| *offset1 = screen_width * (fbh - 1) * ps; |
| if (field_offset) |
| *offset0 = *offset1 - field_offset * screen_width * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(1 - y_predecim * screen_width * 2 - |
| (fieldmode ? screen_width : 0), |
| ps); |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| *pix_inc = pixinc(x_predecim, 2 * ps); |
| else |
| *pix_inc = pixinc(x_predecim, ps); |
| break; |
| |
| case OMAP_DSS_ROT_270 + 4: |
| *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps; |
| if (field_offset) |
| *offset0 = *offset1 - field_offset * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) - |
| y_predecim - (fieldmode ? 1 : 0), |
| ps); |
| *pix_inc = pixinc(-x_predecim * screen_width, ps); |
| break; |
| |
| default: |
| BUG(); |
| return; |
| } |
| } |
| |
| static void calc_tiler_rotation_offset(u16 screen_width, u16 width, |
| enum omap_color_mode color_mode, bool fieldmode, |
| unsigned int field_offset, unsigned *offset0, unsigned *offset1, |
| s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim) |
| { |
| u8 ps; |
| |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_CLUT1: |
| case OMAP_DSS_COLOR_CLUT2: |
| case OMAP_DSS_COLOR_CLUT4: |
| case OMAP_DSS_COLOR_CLUT8: |
| BUG(); |
| return; |
| default: |
| ps = color_mode_to_bpp(color_mode) / 8; |
| break; |
| } |
| |
| DSSDBG("scrw %d, width %d\n", screen_width, width); |
| |
| /* |
| * field 0 = even field = bottom field |
| * field 1 = odd field = top field |
| */ |
| *offset1 = 0; |
| if (field_offset) |
| *offset0 = *offset1 + field_offset * screen_width * ps; |
| else |
| *offset0 = *offset1; |
| *row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) + |
| (fieldmode ? screen_width : 0), ps); |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY) |
| *pix_inc = pixinc(x_predecim, 2 * ps); |
| else |
| *pix_inc = pixinc(x_predecim, ps); |
| } |
| |
| /* |
| * This function is used to avoid synclosts in OMAP3, because of some |
| * undocumented horizontal position and timing related limitations. |
| */ |
| static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk, |
| const struct videomode *vm, u16 pos_x, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| bool five_taps) |
| { |
| const int ds = DIV_ROUND_UP(height, out_height); |
| unsigned long nonactive; |
| static const u8 limits[3] = { 8, 10, 20 }; |
| u64 val, blank; |
| int i; |
| |
| nonactive = vm->hactive + vm->hfront_porch + vm->hsync_len + |
| vm->hback_porch - out_width; |
| |
| i = 0; |
| if (out_height < height) |
| i++; |
| if (out_width < width) |
| i++; |
| blank = div_u64((u64)(vm->hback_porch + vm->hsync_len + vm->hfront_porch) * |
| lclk, pclk); |
| DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]); |
| if (blank <= limits[i]) |
| return -EINVAL; |
| |
| /* FIXME add checks for 3-tap filter once the limitations are known */ |
| if (!five_taps) |
| return 0; |
| |
| /* |
| * Pixel data should be prepared before visible display point starts. |
| * So, atleast DS-2 lines must have already been fetched by DISPC |
| * during nonactive - pos_x period. |
| */ |
| val = div_u64((u64)(nonactive - pos_x) * lclk, pclk); |
| DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n", |
| val, max(0, ds - 2) * width); |
| if (val < max(0, ds - 2) * width) |
| return -EINVAL; |
| |
| /* |
| * All lines need to be refilled during the nonactive period of which |
| * only one line can be loaded during the active period. So, atleast |
| * DS - 1 lines should be loaded during nonactive period. |
| */ |
| val = div_u64((u64)nonactive * lclk, pclk); |
| DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n", |
| val, max(0, ds - 1) * width); |
| if (val < max(0, ds - 1) * width) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static unsigned long calc_core_clk_five_taps(unsigned long pclk, |
| const struct videomode *vm, u16 width, |
| u16 height, u16 out_width, u16 out_height, |
| enum omap_color_mode color_mode) |
| { |
| u32 core_clk = 0; |
| u64 tmp; |
| |
| if (height <= out_height && width <= out_width) |
| return (unsigned long) pclk; |
| |
| if (height > out_height) { |
| unsigned int ppl = vm->hactive; |
| |
| tmp = (u64)pclk * height * out_width; |
| do_div(tmp, 2 * out_height * ppl); |
| core_clk = tmp; |
| |
| if (height > 2 * out_height) { |
| if (ppl == out_width) |
| return 0; |
| |
| tmp = (u64)pclk * (height - 2 * out_height) * out_width; |
| do_div(tmp, 2 * out_height * (ppl - out_width)); |
| core_clk = max_t(u32, core_clk, tmp); |
| } |
| } |
| |
| if (width > out_width) { |
| tmp = (u64)pclk * width; |
| do_div(tmp, out_width); |
| core_clk = max_t(u32, core_clk, tmp); |
| |
| if (color_mode == OMAP_DSS_COLOR_RGB24U) |
| core_clk <<= 1; |
| } |
| |
| return core_clk; |
| } |
| |
| static unsigned long calc_core_clk_24xx(unsigned long pclk, u16 width, |
| u16 height, u16 out_width, u16 out_height, bool mem_to_mem) |
| { |
| if (height > out_height && width > out_width) |
| return pclk * 4; |
| else |
| return pclk * 2; |
| } |
| |
| static unsigned long calc_core_clk_34xx(unsigned long pclk, u16 width, |
| u16 height, u16 out_width, u16 out_height, bool mem_to_mem) |
| { |
| unsigned int hf, vf; |
| |
| /* |
| * FIXME how to determine the 'A' factor |
| * for the no downscaling case ? |
| */ |
| |
| if (width > 3 * out_width) |
| hf = 4; |
| else if (width > 2 * out_width) |
| hf = 3; |
| else if (width > out_width) |
| hf = 2; |
| else |
| hf = 1; |
| if (height > out_height) |
| vf = 2; |
| else |
| vf = 1; |
| |
| return pclk * vf * hf; |
| } |
| |
| static unsigned long calc_core_clk_44xx(unsigned long pclk, u16 width, |
| u16 height, u16 out_width, u16 out_height, bool mem_to_mem) |
| { |
| /* |
| * If the overlay/writeback is in mem to mem mode, there are no |
| * downscaling limitations with respect to pixel clock, return 1 as |
| * required core clock to represent that we have sufficient enough |
| * core clock to do maximum downscaling |
| */ |
| if (mem_to_mem) |
| return 1; |
| |
| if (width > out_width) |
| return DIV_ROUND_UP(pclk, out_width) * width; |
| else |
| return pclk; |
| } |
| |
| static int dispc_ovl_calc_scaling_24xx(unsigned long pclk, unsigned long lclk, |
| const struct videomode *vm, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| enum omap_color_mode color_mode, bool *five_taps, |
| int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, |
| u16 pos_x, unsigned long *core_clk, bool mem_to_mem) |
| { |
| int error; |
| u16 in_width, in_height; |
| int min_factor = min(*decim_x, *decim_y); |
| const int maxsinglelinewidth = |
| dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); |
| |
| *five_taps = false; |
| |
| do { |
| in_height = height / *decim_y; |
| in_width = width / *decim_x; |
| *core_clk = dispc.feat->calc_core_clk(pclk, in_width, |
| in_height, out_width, out_height, mem_to_mem); |
| error = (in_width > maxsinglelinewidth || !*core_clk || |
| *core_clk > dispc_core_clk_rate()); |
| if (error) { |
| if (*decim_x == *decim_y) { |
| *decim_x = min_factor; |
| ++*decim_y; |
| } else { |
| swap(*decim_x, *decim_y); |
| if (*decim_x < *decim_y) |
| ++*decim_x; |
| } |
| } |
| } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error); |
| |
| if (error) { |
| DSSERR("failed to find scaling settings\n"); |
| return -EINVAL; |
| } |
| |
| if (in_width > maxsinglelinewidth) { |
| DSSERR("Cannot scale max input width exceeded"); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk, |
| const struct videomode *vm, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| enum omap_color_mode color_mode, bool *five_taps, |
| int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, |
| u16 pos_x, unsigned long *core_clk, bool mem_to_mem) |
| { |
| int error; |
| u16 in_width, in_height; |
| const int maxsinglelinewidth = |
| dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); |
| |
| do { |
| in_height = height / *decim_y; |
| in_width = width / *decim_x; |
| *five_taps = in_height > out_height; |
| |
| if (in_width > maxsinglelinewidth) |
| if (in_height > out_height && |
| in_height < out_height * 2) |
| *five_taps = false; |
| again: |
| if (*five_taps) |
| *core_clk = calc_core_clk_five_taps(pclk, vm, |
| in_width, in_height, out_width, |
| out_height, color_mode); |
| else |
| *core_clk = dispc.feat->calc_core_clk(pclk, in_width, |
| in_height, out_width, out_height, |
| mem_to_mem); |
| |
| error = check_horiz_timing_omap3(pclk, lclk, vm, |
| pos_x, in_width, in_height, out_width, |
| out_height, *five_taps); |
| if (error && *five_taps) { |
| *five_taps = false; |
| goto again; |
| } |
| |
| error = (error || in_width > maxsinglelinewidth * 2 || |
| (in_width > maxsinglelinewidth && *five_taps) || |
| !*core_clk || *core_clk > dispc_core_clk_rate()); |
| |
| if (!error) { |
| /* verify that we're inside the limits of scaler */ |
| if (in_width / 4 > out_width) |
| error = 1; |
| |
| if (*five_taps) { |
| if (in_height / 4 > out_height) |
| error = 1; |
| } else { |
| if (in_height / 2 > out_height) |
| error = 1; |
| } |
| } |
| |
| if (error) |
| ++*decim_y; |
| } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error); |
| |
| if (error) { |
| DSSERR("failed to find scaling settings\n"); |
| return -EINVAL; |
| } |
| |
| if (check_horiz_timing_omap3(pclk, lclk, vm, pos_x, in_width, |
| in_height, out_width, out_height, *five_taps)) { |
| DSSERR("horizontal timing too tight\n"); |
| return -EINVAL; |
| } |
| |
| if (in_width > (maxsinglelinewidth * 2)) { |
| DSSERR("Cannot setup scaling"); |
| DSSERR("width exceeds maximum width possible"); |
| return -EINVAL; |
| } |
| |
| if (in_width > maxsinglelinewidth && *five_taps) { |
| DSSERR("cannot setup scaling with five taps"); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int dispc_ovl_calc_scaling_44xx(unsigned long pclk, unsigned long lclk, |
| const struct videomode *vm, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| enum omap_color_mode color_mode, bool *five_taps, |
| int *x_predecim, int *y_predecim, int *decim_x, int *decim_y, |
| u16 pos_x, unsigned long *core_clk, bool mem_to_mem) |
| { |
| u16 in_width, in_width_max; |
| int decim_x_min = *decim_x; |
| u16 in_height = height / *decim_y; |
| const int maxsinglelinewidth = |
| dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH); |
| const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE); |
| |
| if (mem_to_mem) { |
| in_width_max = out_width * maxdownscale; |
| } else { |
| in_width_max = dispc_core_clk_rate() / |
| DIV_ROUND_UP(pclk, out_width); |
| } |
| |
| *decim_x = DIV_ROUND_UP(width, in_width_max); |
| |
| *decim_x = *decim_x > decim_x_min ? *decim_x : decim_x_min; |
| if (*decim_x > *x_predecim) |
| return -EINVAL; |
| |
| do { |
| in_width = width / *decim_x; |
| } while (*decim_x <= *x_predecim && |
| in_width > maxsinglelinewidth && ++*decim_x); |
| |
| if (in_width > maxsinglelinewidth) { |
| DSSERR("Cannot scale width exceeds max line width"); |
| return -EINVAL; |
| } |
| |
| if (*decim_x > 4 && color_mode != OMAP_DSS_COLOR_NV12) { |
| /* |
| * Let's disable all scaling that requires horizontal |
| * decimation with higher factor than 4, until we have |
| * better estimates of what we can and can not |
| * do. However, NV12 color format appears to work Ok |
| * with all decimation factors. |
| * |
| * When decimating horizontally by more that 4 the dss |
| * is not able to fetch the data in burst mode. When |
| * this happens it is hard to tell if there enough |
| * bandwidth. Despite what theory says this appears to |
| * be true also for 16-bit color formats. |
| */ |
| DSSERR("Not enough bandwidth, too much downscaling (x-decimation factor %d > 4)", *decim_x); |
| |
| return -EINVAL; |
| } |
| |
| *core_clk = dispc.feat->calc_core_clk(pclk, in_width, in_height, |
| out_width, out_height, mem_to_mem); |
| return 0; |
| } |
| |
| #define DIV_FRAC(dividend, divisor) \ |
| ((dividend) * 100 / (divisor) - ((dividend) / (divisor) * 100)) |
| |
| static int dispc_ovl_calc_scaling(unsigned long pclk, unsigned long lclk, |
| enum omap_overlay_caps caps, |
| const struct videomode *vm, |
| u16 width, u16 height, u16 out_width, u16 out_height, |
| enum omap_color_mode color_mode, bool *five_taps, |
| int *x_predecim, int *y_predecim, u16 pos_x, |
| enum omap_dss_rotation_type rotation_type, bool mem_to_mem) |
| { |
| const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE); |
| const int max_decim_limit = 16; |
| unsigned long core_clk = 0; |
| int decim_x, decim_y, ret; |
| |
| if (width == out_width && height == out_height) |
| return 0; |
| |
| if (!mem_to_mem && (pclk == 0 || vm->pixelclock == 0)) { |
| DSSERR("cannot calculate scaling settings: pclk is zero\n"); |
| return -EINVAL; |
| } |
| |
| if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0) |
| return -EINVAL; |
| |
| if (mem_to_mem) { |
| *x_predecim = *y_predecim = 1; |
| } else { |
| *x_predecim = max_decim_limit; |
| *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER && |
| dss_has_feature(FEAT_BURST_2D)) ? |
| 2 : max_decim_limit; |
| } |
| |
| if (color_mode == OMAP_DSS_COLOR_CLUT1 || |
| color_mode == OMAP_DSS_COLOR_CLUT2 || |
| color_mode == OMAP_DSS_COLOR_CLUT4 || |
| color_mode == OMAP_DSS_COLOR_CLUT8) { |
| *x_predecim = 1; |
| *y_predecim = 1; |
| *five_taps = false; |
| return 0; |
| } |
| |
| decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxdownscale); |
| decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxdownscale); |
| |
| if (decim_x > *x_predecim || out_width > width * 8) |
| return -EINVAL; |
| |
| if (decim_y > *y_predecim || out_height > height * 8) |
| return -EINVAL; |
| |
| ret = dispc.feat->calc_scaling(pclk, lclk, vm, width, height, |
| out_width, out_height, color_mode, five_taps, |
| x_predecim, y_predecim, &decim_x, &decim_y, pos_x, &core_clk, |
| mem_to_mem); |
| if (ret) |
| return ret; |
| |
| DSSDBG("%dx%d -> %dx%d (%d.%02d x %d.%02d), decim %dx%d %dx%d (%d.%02d x %d.%02d), taps %d, req clk %lu, cur clk %lu\n", |
| width, height, |
| out_width, out_height, |
| out_width / width, DIV_FRAC(out_width, width), |
| out_height / height, DIV_FRAC(out_height, height), |
| |
| decim_x, decim_y, |
| width / decim_x, height / decim_y, |
| out_width / (width / decim_x), DIV_FRAC(out_width, width / decim_x), |
| out_height / (height / decim_y), DIV_FRAC(out_height, height / decim_y), |
| |
| *five_taps ? 5 : 3, |
| core_clk, dispc_core_clk_rate()); |
| |
| if (!core_clk || core_clk > dispc_core_clk_rate()) { |
| DSSERR("failed to set up scaling, " |
| "required core clk rate = %lu Hz, " |
| "current core clk rate = %lu Hz\n", |
| core_clk, dispc_core_clk_rate()); |
| return -EINVAL; |
| } |
| |
| *x_predecim = decim_x; |
| *y_predecim = decim_y; |
| return 0; |
| } |
| |
| static int dispc_ovl_setup_common(enum omap_plane plane, |
| enum omap_overlay_caps caps, u32 paddr, u32 p_uv_addr, |
| u16 screen_width, int pos_x, int pos_y, u16 width, u16 height, |
| u16 out_width, u16 out_height, enum omap_color_mode color_mode, |
| u8 rotation, bool mirror, u8 zorder, u8 pre_mult_alpha, |
| u8 global_alpha, enum omap_dss_rotation_type rotation_type, |
| bool replication, const struct videomode *vm, |
| bool mem_to_mem) |
| { |
| bool five_taps = true; |
| bool fieldmode = false; |
| int r, cconv = 0; |
| unsigned offset0, offset1; |
| s32 row_inc; |
| s32 pix_inc; |
| u16 frame_width, frame_height; |
| unsigned int field_offset = 0; |
| u16 in_height = height; |
| u16 in_width = width; |
| int x_predecim = 1, y_predecim = 1; |
| bool ilace = !!(vm->flags & DISPLAY_FLAGS_INTERLACED); |
| unsigned long pclk = dispc_plane_pclk_rate(plane); |
| unsigned long lclk = dispc_plane_lclk_rate(plane); |
| |
| if (paddr == 0 && rotation_type != OMAP_DSS_ROT_TILER) |
| return -EINVAL; |
| |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_YUV2: |
| case OMAP_DSS_COLOR_UYVY: |
| case OMAP_DSS_COLOR_NV12: |
| if (in_width & 1) { |
| DSSERR("input width %d is not even for YUV format\n", |
| in_width); |
| return -EINVAL; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| out_width = out_width == 0 ? width : out_width; |
| out_height = out_height == 0 ? height : out_height; |
| |
| if (ilace && height == out_height) |
| fieldmode = true; |
| |
| if (ilace) { |
| if (fieldmode) |
| in_height /= 2; |
| pos_y /= 2; |
| out_height /= 2; |
| |
| DSSDBG("adjusting for ilace: height %d, pos_y %d, " |
| "out_height %d\n", in_height, pos_y, |
| out_height); |
| } |
| |
| if (!dss_feat_color_mode_supported(plane, color_mode)) |
| return -EINVAL; |
| |
| r = dispc_ovl_calc_scaling(pclk, lclk, caps, vm, in_width, |
| in_height, out_width, out_height, color_mode, |
| &five_taps, &x_predecim, &y_predecim, pos_x, |
| rotation_type, mem_to_mem); |
| if (r) |
| return r; |
| |
| in_width = in_width / x_predecim; |
| in_height = in_height / y_predecim; |
| |
| if (x_predecim > 1 || y_predecim > 1) |
| DSSDBG("predecimation %d x %x, new input size %d x %d\n", |
| x_predecim, y_predecim, in_width, in_height); |
| |
| switch (color_mode) { |
| case OMAP_DSS_COLOR_YUV2: |
| case OMAP_DSS_COLOR_UYVY: |
| case OMAP_DSS_COLOR_NV12: |
| if (in_width & 1) { |
| DSSDBG("predecimated input width is not even for YUV format\n"); |
| DSSDBG("adjusting input width %d -> %d\n", |
| in_width, in_width & ~1); |
| |
| in_width &= ~1; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| if (color_mode == OMAP_DSS_COLOR_YUV2 || |
| color_mode == OMAP_DSS_COLOR_UYVY || |
| color_mode == OMAP_DSS_COLOR_NV12) |
| cconv = 1; |
| |
| if (ilace && !fieldmode) { |
| /* |
| * when downscaling the bottom field may have to start several |
| * source lines below the top field. Unfortunately ACCUI |
| * registers will only hold the fractional part of the offset |
| * so the integer part must be added to the base address of the |
| * bottom field. |
| */ |
| if (!in_height || in_height == out_height) |
| field_offset = 0; |
| else |
| field_offset = in_height / out_height / 2; |
| } |
| |
| /* Fields are independent but interleaved in memory. */ |
| if (fieldmode) |
| field_offset = 1; |
| |
| offset0 = 0; |
| offset1 = 0; |
| row_inc = 0; |
| pix_inc = 0; |
| |
| if (plane == OMAP_DSS_WB) { |
| frame_width = out_width; |
| frame_height = out_height; |
| } else { |
| frame_width = in_width; |
| frame_height = height; |
| } |
| |
| if (rotation_type == OMAP_DSS_ROT_TILER) |
| calc_tiler_rotation_offset(screen_width, frame_width, |
| color_mode, fieldmode, field_offset, |
| &offset0, &offset1, &row_inc, &pix_inc, |
| x_predecim, y_predecim); |
| else if (rotation_type == OMAP_DSS_ROT_DMA) |
| calc_dma_rotation_offset(rotation, mirror, screen_width, |
| frame_width, frame_height, |
| color_mode, fieldmode, field_offset, |
| &offset0, &offset1, &row_inc, &pix_inc, |
| x_predecim, y_predecim); |
| else |
| calc_vrfb_rotation_offset(rotation, mirror, |
| screen_width, frame_width, frame_height, |
| color_mode, fieldmode, field_offset, |
| &offset0, &offset1, &row_inc, &pix_inc, |
| x_predecim, y_predecim); |
| |
| DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n", |
| offset0, offset1, row_inc, pix_inc); |
| |
| dispc_ovl_set_color_mode(plane, color_mode); |
| |
| dispc_ovl_configure_burst_type(plane, rotation_type); |
| |
| if (dispc.feat->reverse_ilace_field_order) |
| swap(offset0, offset1); |
| |
| dispc_ovl_set_ba0(plane, paddr + offset0); |
| dispc_ovl_set_ba1(plane, paddr + offset1); |
| |
| if (OMAP_DSS_COLOR_NV12 == color_mode) { |
| dispc_ovl_set_ba0_uv(plane, p_uv_addr + offset0); |
| dispc_ovl_set_ba1_uv(plane, p_uv_addr + offset1); |
| } |
| |
| if (dispc.feat->last_pixel_inc_missing) |
| row_inc += pix_inc - 1; |
| |
| dispc_ovl_set_row_inc(plane, row_inc); |
| dispc_ovl_set_pix_inc(plane, pix_inc); |
| |
| DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width, |
| in_height, out_width, out_height); |
| |
| dispc_ovl_set_pos(plane, caps, pos_x, pos_y); |
| |
| dispc_ovl_set_input_size(plane, in_width, in_height); |
| |
| if (caps & OMAP_DSS_OVL_CAP_SCALE) { |
| dispc_ovl_set_scaling(plane, in_width, in_height, out_width, |
| out_height, ilace, five_taps, fieldmode, |
| color_mode, rotation); |
| dispc_ovl_set_output_size(plane, out_width, out_height); |
| dispc_ovl_set_vid_color_conv(plane, cconv); |
| } |
| |
| dispc_ovl_set_rotation_attrs(plane, rotation, rotation_type, mirror, |
| color_mode); |
| |
| dispc_ovl_set_zorder(plane, caps, zorder); |
| dispc_ovl_set_pre_mult_alpha(plane, caps, pre_mult_alpha); |
| dispc_ovl_setup_global_alpha(plane, caps, global_alpha); |
| |
| dispc_ovl_enable_replication(plane, caps, replication); |
| |
| return 0; |
| } |
| |
| int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi, |
| bool replication, const struct videomode *vm, |
| bool mem_to_mem) |
| { |
| int r; |
| enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane); |
| enum omap_channel channel; |
| |
| channel = dispc_ovl_get_channel_out(plane); |
| |
| DSSDBG("dispc_ovl_setup %d, pa %pad, pa_uv %pad, sw %d, %d,%d, %dx%d ->" |
| " %dx%d, cmode %x, rot %d, mir %d, chan %d repl %d\n", |
| plane, &oi->paddr, &oi->p_uv_addr, oi->screen_width, oi->pos_x, |
| oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height, |
| oi->color_mode, oi->rotation, oi->mirror, channel, replication); |
| |
| r = dispc_ovl_setup_common(plane, caps, oi->paddr, oi->p_uv_addr, |
| oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height, |
| oi->out_width, oi->out_height, oi->color_mode, oi->rotation, |
| oi->mirror, oi->zorder, oi->pre_mult_alpha, oi->global_alpha, |
| oi->rotation_type, replication, vm, mem_to_mem); |
| |
| return r; |
| } |
| EXPORT_SYMBOL(dispc_ovl_setup); |
| |
| int dispc_wb_setup(const struct omap_dss_writeback_info *wi, |
| bool mem_to_mem, const struct videomode *vm) |
| { |
| int r; |
| u32 l; |
| enum omap_plane plane = OMAP_DSS_WB; |
| const int pos_x = 0, pos_y = 0; |
| const u8 zorder = 0, global_alpha = 0; |
| const bool replication = false; |
| bool truncation; |
| int in_width = vm->hactive; |
| int in_height = vm->vactive; |
| enum omap_overlay_caps caps = |
| OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA; |
| |
| DSSDBG("dispc_wb_setup, pa %x, pa_uv %x, %d,%d -> %dx%d, cmode %x, " |
| "rot %d, mir %d\n", wi->paddr, wi->p_uv_addr, in_width, |
| in_height, wi->width, wi->height, wi->color_mode, wi->rotation, |
| wi->mirror); |
| |
| r = dispc_ovl_setup_common(plane, caps, wi->paddr, wi->p_uv_addr, |
| wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width, |
| wi->height, wi->color_mode, wi->rotation, wi->mirror, zorder, |
| wi->pre_mult_alpha, global_alpha, wi->rotation_type, |
| replication, vm, mem_to_mem); |
| |
| switch (wi->color_mode) { |
| case OMAP_DSS_COLOR_RGB16: |
| case OMAP_DSS_COLOR_RGB24P: |
| case OMAP_DSS_COLOR_ARGB16: |
| case OMAP_DSS_COLOR_RGBA16: |
| case OMAP_DSS_COLOR_RGB12U: |
| case OMAP_DSS_COLOR_ARGB16_1555: |
| case OMAP_DSS_COLOR_XRGB16_1555: |
| case OMAP_DSS_COLOR_RGBX16: |
| truncation = true; |
| break; |
| default: |
| truncation = false; |
| break; |
| } |
| |
| /* setup extra DISPC_WB_ATTRIBUTES */ |
| l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); |
| l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */ |
| l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */ |
| if (mem_to_mem) |
| l = FLD_MOD(l, 1, 26, 24); /* CAPTUREMODE */ |
| else |
| l = FLD_MOD(l, 0, 26, 24); /* CAPTUREMODE */ |
| dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l); |
| |
| if (mem_to_mem) { |
| /* WBDELAYCOUNT */ |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 7, 0); |
| } else { |
| int wbdelay; |
| |
| wbdelay = min(vm->vfront_porch + |
| vm->vsync_len + vm->vback_porch, (u32)255); |
| |
| /* WBDELAYCOUNT */ |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0); |
| } |
| |
| return r; |
| } |
| |
| int dispc_ovl_enable(enum omap_plane plane, bool enable) |
| { |
| DSSDBG("dispc_enable_plane %d, %d\n", plane, enable); |
| |
| REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(dispc_ovl_enable); |
| |
| bool dispc_ovl_enabled(enum omap_plane plane) |
| { |
| return REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0); |
| } |
| EXPORT_SYMBOL(dispc_ovl_enabled); |
| |
| enum omap_dss_output_id dispc_mgr_get_supported_outputs(enum omap_channel channel) |
| { |
| return dss_feat_get_supported_outputs(channel); |
| } |
| EXPORT_SYMBOL(dispc_mgr_get_supported_outputs); |
| |
| void dispc_wb_enable(bool enable) |
| { |
| dispc_ovl_enable(OMAP_DSS_WB, enable); |
| } |
| |
| bool dispc_wb_is_enabled(void) |
| { |
| return dispc_ovl_enabled(OMAP_DSS_WB); |
| } |
| |
| static void dispc_lcd_enable_signal_polarity(bool act_high) |
| { |
| if (!dss_has_feature(FEAT_LCDENABLEPOL)) |
| return; |
| |
| REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29); |
| } |
| |
| void dispc_lcd_enable_signal(bool enable) |
| { |
| if (!dss_has_feature(FEAT_LCDENABLESIGNAL)) |
| return; |
| |
| REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28); |
| } |
| |
| void dispc_pck_free_enable(bool enable) |
| { |
| if (!dss_has_feature(FEAT_PCKFREEENABLE)) |
| return; |
| |
| REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27); |
| } |
| |
| static void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable) |
| { |
| mgr_fld_write(channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable); |
| } |
| |
| |
| static void dispc_mgr_set_lcd_type_tft(enum omap_channel channel) |
| { |
| mgr_fld_write(channel, DISPC_MGR_FLD_STNTFT, 1); |
| } |
| |
| static void dispc_set_loadmode(enum omap_dss_load_mode mode) |
| { |
| REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1); |
| } |
| |
| |
| static void dispc_mgr_set_default_color(enum omap_channel channel, u32 color) |
| { |
| dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color); |
| } |
| |
| static void dispc_mgr_set_trans_key(enum omap_channel ch, |
| enum omap_dss_trans_key_type type, |
| u32 trans_key) |
| { |
| mgr_fld_write(ch, DISPC_MGR_FLD_TCKSELECTION, type); |
| |
| dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key); |
| } |
| |
| static void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable) |
| { |
| mgr_fld_write(ch, DISPC_MGR_FLD_TCKENABLE, enable); |
| } |
| |
| static void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch, |
| bool enable) |
| { |
| if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) |
| return; |
| |
| if (ch == OMAP_DSS_CHANNEL_LCD) |
| REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18); |
| else if (ch == OMAP_DSS_CHANNEL_DIGIT) |
| REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19); |
| } |
| |
| void dispc_mgr_setup(enum omap_channel channel, |
| const struct omap_overlay_manager_info *info) |
| { |
| dispc_mgr_set_default_color(channel, info->default_color); |
| dispc_mgr_set_trans_key(channel, info->trans_key_type, info->trans_key); |
| dispc_mgr_enable_trans_key(channel, info->trans_enabled); |
| dispc_mgr_enable_alpha_fixed_zorder(channel, |
| info->partial_alpha_enabled); |
| if (dss_has_feature(FEAT_CPR)) { |
| dispc_mgr_enable_cpr(channel, info->cpr_enable); |
| dispc_mgr_set_cpr_coef(channel, &info->cpr_coefs); |
| } |
| } |
| EXPORT_SYMBOL(dispc_mgr_setup); |
| |
| static void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines) |
| { |
| int code; |
| |
| switch (data_lines) { |
| case 12: |
| code = 0; |
| break; |
| case 16: |
| code = 1; |
| break; |
| case 18: |
| code = 2; |
| break; |
| case 24: |
| code = 3; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| mgr_fld_write(channel, DISPC_MGR_FLD_TFTDATALINES, code); |
| } |
| |
| static void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode) |
| { |
| u32 l; |
| int gpout0, gpout1; |
| |
| switch (mode) { |
| case DSS_IO_PAD_MODE_RESET: |
| gpout0 = 0; |
| gpout1 = 0; |
| break; |
| case DSS_IO_PAD_MODE_RFBI: |
| gpout0 = 1; |
| gpout1 = 0; |
| break; |
| case DSS_IO_PAD_MODE_BYPASS: |
| gpout0 = 1; |
| gpout1 = 1; |
| break; |
| default: |
| BUG(); |
| return; |
| } |
| |
| l = dispc_read_reg(DISPC_CONTROL); |
| l = FLD_MOD(l, gpout0, 15, 15); |
| l = FLD_MOD(l, gpout1, 16, 16); |
| dispc_write_reg(DISPC_CONTROL, l); |
| } |
| |
| static void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable) |
| { |
| mgr_fld_write(channel, DISPC_MGR_FLD_STALLMODE, enable); |
| } |
| |
| void dispc_mgr_set_lcd_config(enum omap_channel channel, |
| const struct dss_lcd_mgr_config *config) |
| { |
| dispc_mgr_set_io_pad_mode(config->io_pad_mode); |
| |
| dispc_mgr_enable_stallmode(channel, config->stallmode); |
| dispc_mgr_enable_fifohandcheck(channel, config->fifohandcheck); |
| |
| dispc_mgr_set_clock_div(channel, &config->clock_info); |
| |
| dispc_mgr_set_tft_data_lines(channel, config->video_port_width); |
| |
| dispc_lcd_enable_signal_polarity(config->lcden_sig_polarity); |
| |
| dispc_mgr_set_lcd_type_tft(channel); |
| } |
| EXPORT_SYMBOL(dispc_mgr_set_lcd_config); |
| |
| static bool _dispc_mgr_size_ok(u16 width, u16 height) |
| { |
| return width <= dispc.feat->mgr_width_max && |
| height <= dispc.feat->mgr_height_max; |
| } |
| |
| static bool _dispc_lcd_timings_ok(int hsync_len, int hfp, int hbp, |
| int vsw, int vfp, int vbp) |
| { |
| if (hsync_len < 1 || hsync_len > dispc.feat->sw_max || |
| hfp < 1 || hfp > dispc.feat->hp_max || |
| hbp < 1 || hbp > dispc.feat->hp_max || |
| vsw < 1 || vsw > dispc.feat->sw_max || |
| vfp < 0 || vfp > dispc.feat->vp_max || |
| vbp < 0 || vbp > dispc.feat->vp_max) |
| return false; |
| return true; |
| } |
| |
| static bool _dispc_mgr_pclk_ok(enum omap_channel channel, |
| unsigned long pclk) |
| { |
| if (dss_mgr_is_lcd(channel)) |
| return pclk <= dispc.feat->max_lcd_pclk; |
| else |
| return pclk <= dispc.feat->max_tv_pclk; |
| } |
| |
| bool dispc_mgr_timings_ok(enum omap_channel channel, const struct videomode *vm) |
| { |
| if (!_dispc_mgr_size_ok(vm->hactive, vm->vactive)) |
| return false; |
| |
| if (!_dispc_mgr_pclk_ok(channel, vm->pixelclock)) |
| return false; |
| |
| if (dss_mgr_is_lcd(channel)) { |
| /* TODO: OMAP4+ supports interlace for LCD outputs */ |
| if (vm->flags & DISPLAY_FLAGS_INTERLACED) |
| return false; |
| |
| if (!_dispc_lcd_timings_ok(vm->hsync_len, |
| vm->hfront_porch, vm->hback_porch, |
| vm->vsync_len, vm->vfront_porch, |
| vm->vback_porch)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, |
| const struct videomode *vm) |
| { |
| u32 timing_h, timing_v, l; |
| bool onoff, rf, ipc, vs, hs, de; |
| |
| timing_h = FLD_VAL(vm->hsync_len - 1, dispc.feat->sw_start, 0) | |
| FLD_VAL(vm->hfront_porch - 1, dispc.feat->fp_start, 8) | |
| FLD_VAL(vm->hback_porch - 1, dispc.feat->bp_start, 20); |
| timing_v = FLD_VAL(vm->vsync_len - 1, dispc.feat->sw_start, 0) | |
| FLD_VAL(vm->vfront_porch, dispc.feat->fp_start, 8) | |
| FLD_VAL(vm->vback_porch, dispc.feat->bp_start, 20); |
| |
| dispc_write_reg(DISPC_TIMING_H(channel), timing_h); |
| dispc_write_reg(DISPC_TIMING_V(channel), timing_v); |
| |
| if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) |
| vs = false; |
| else |
| vs = true; |
| |
| if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) |
| hs = false; |
| else |
| hs = true; |
| |
| if (vm->flags & DISPLAY_FLAGS_DE_HIGH) |
| de = false; |
| else |
| de = true; |
| |
| if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) |
| ipc = false; |
| else |
| ipc = true; |
| |
| /* always use the 'rf' setting */ |
| onoff = true; |
| |
| if (vm->flags & DISPLAY_FLAGS_SYNC_POSEDGE) |
| rf = true; |
| else |
| rf = false; |
| |
| l = FLD_VAL(onoff, 17, 17) | |
| FLD_VAL(rf, 16, 16) | |
| FLD_VAL(de, 15, 15) | |
| FLD_VAL(ipc, 14, 14) | |
| FLD_VAL(hs, 13, 13) | |
| FLD_VAL(vs, 12, 12); |
| |
| /* always set ALIGN bit when available */ |
| if (dispc.feat->supports_sync_align) |
| l |= (1 << 18); |
| |
| dispc_write_reg(DISPC_POL_FREQ(channel), l); |
| |
| if (dispc.syscon_pol) { |
| const int shifts[] = { |
| [OMAP_DSS_CHANNEL_LCD] = 0, |
| [OMAP_DSS_CHANNEL_LCD2] = 1, |
| [OMAP_DSS_CHANNEL_LCD3] = 2, |
| }; |
| |
| u32 mask, val; |
| |
| mask = (1 << 0) | (1 << 3) | (1 << 6); |
| val = (rf << 0) | (ipc << 3) | (onoff << 6); |
| |
| mask <<= 16 + shifts[channel]; |
| val <<= 16 + shifts[channel]; |
| |
| regmap_update_bits(dispc.syscon_pol, dispc.syscon_pol_offset, |
| mask, val); |
| } |
| } |
| |
| /* change name to mode? */ |
| void dispc_mgr_set_timings(enum omap_channel channel, |
| const struct videomode *vm) |
| { |
| unsigned xtot, ytot; |
| unsigned long ht, vt; |
| struct videomode t = *vm; |
| |
| DSSDBG("channel %d xres %u yres %u\n", channel, t.hactive, t.vactive); |
| |
| if (!dispc_mgr_timings_ok(channel, &t)) { |
| BUG(); |
| return; |
| } |
| |
| if (dss_mgr_is_lcd(channel)) { |
| _dispc_mgr_set_lcd_timings(channel, &t); |
| |
| xtot = t.hactive + t.hfront_porch + t.hsync_len + t.hback_porch; |
| ytot = t.vactive + t.vfront_porch + t.vsync_len + t.vback_porch; |
| |
| ht = vm->pixelclock / xtot; |
| vt = vm->pixelclock / xtot / ytot; |
| |
| DSSDBG("pck %lu\n", vm->pixelclock); |
| DSSDBG("hsync_len %d hfp %d hbp %d vsw %d vfp %d vbp %d\n", |
| t.hsync_len, t.hfront_porch, t.hback_porch, |
| t.vsync_len, t.vfront_porch, t.vback_porch); |
| DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n", |
| !!(t.flags & DISPLAY_FLAGS_VSYNC_HIGH), |
| !!(t.flags & DISPLAY_FLAGS_HSYNC_HIGH), |
| !!(t.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE), |
| !!(t.flags & DISPLAY_FLAGS_DE_HIGH), |
| !!(t.flags & DISPLAY_FLAGS_SYNC_POSEDGE)); |
| |
| DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt); |
| } else { |
| if (t.flags & DISPLAY_FLAGS_INTERLACED) |
| t.vactive /= 2; |
| |
| if (dispc.feat->supports_double_pixel) |
| REG_FLD_MOD(DISPC_CONTROL, |
| !!(t.flags & DISPLAY_FLAGS_DOUBLECLK), |
| 19, 17); |
| } |
| |
| dispc_mgr_set_size(channel, t.hactive, t.vactive); |
| } |
| EXPORT_SYMBOL(dispc_mgr_set_timings); |
| |
| static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div, |
| u16 pck_div) |
| { |
| BUG_ON(lck_div < 1); |
| BUG_ON(pck_div < 1); |
| |
| dispc_write_reg(DISPC_DIVISORo(channel), |
| FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0)); |
| |
| if (!dss_has_feature(FEAT_CORE_CLK_DIV) && |
| channel == OMAP_DSS_CHANNEL_LCD) |
| dispc.core_clk_rate = dispc_fclk_rate() / lck_div; |
| } |
| |
| static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div, |
| int *pck_div) |
| { |
| u32 l; |
| l = dispc_read_reg(DISPC_DIVISORo(channel)); |
| *lck_div = FLD_GET(l, 23, 16); |
| *pck_div = FLD_GET(l, 7, 0); |
| } |
| |
| static unsigned long dispc_fclk_rate(void) |
| { |
| unsigned long r; |
| enum dss_clk_source src; |
| |
| src = dss_get_dispc_clk_source(); |
| |
| if (src == DSS_CLK_SRC_FCK) { |
| r = dss_get_dispc_clk_rate(); |
| } else { |
| struct dss_pll *pll; |
| unsigned clkout_idx; |
| |
| pll = dss_pll_find_by_src(src); |
| clkout_idx = dss_pll_get_clkout_idx_for_src(src); |
| |
| r = pll->cinfo.clkout[clkout_idx]; |
| } |
| |
| return r; |
| } |
| |
| static unsigned long dispc_mgr_lclk_rate(enum omap_channel channel) |
| { |
| int lcd; |
| unsigned long r; |
| enum dss_clk_source src; |
| |
| /* for TV, LCLK rate is the FCLK rate */ |
| if (!dss_mgr_is_lcd(channel)) |
| return dispc_fclk_rate(); |
| |
| src = dss_get_lcd_clk_source(channel); |
| |
| if (src == DSS_CLK_SRC_FCK) { |
| r = dss_get_dispc_clk_rate(); |
| } else { |
| struct dss_pll *pll; |
| unsigned clkout_idx; |
| |
| pll = dss_pll_find_by_src(src); |
| clkout_idx = dss_pll_get_clkout_idx_for_src(src); |
| |
| r = pll->cinfo.clkout[clkout_idx]; |
| } |
| |
| lcd = REG_GET(DISPC_DIVISORo(channel), 23, 16); |
| |
| return r / lcd; |
| } |
| |
| static unsigned long dispc_mgr_pclk_rate(enum omap_channel channel) |
| { |
| unsigned long r; |
| |
| if (dss_mgr_is_lcd(channel)) { |
| int pcd; |
| u32 l; |
| |
| l = dispc_read_reg(DISPC_DIVISORo(channel)); |
| |
| pcd = FLD_GET(l, 7, 0); |
| |
| r = dispc_mgr_lclk_rate(channel); |
| |
| return r / pcd; |
| } else { |
| return dispc.tv_pclk_rate; |
| } |
| } |
| |
| void dispc_set_tv_pclk(unsigned long pclk) |
| { |
| dispc.tv_pclk_rate = pclk; |
| } |
| |
| static unsigned long dispc_core_clk_rate(void) |
| { |
| return dispc.core_clk_rate; |
| } |
| |
| static unsigned long dispc_plane_pclk_rate(enum omap_plane plane) |
| { |
| enum omap_channel channel; |
| |
| if (plane == OMAP_DSS_WB) |
| return 0; |
| |
| channel = dispc_ovl_get_channel_out(plane); |
| |
| return dispc_mgr_pclk_rate(channel); |
| } |
| |
| static unsigned long dispc_plane_lclk_rate(enum omap_plane plane) |
| { |
| enum omap_channel channel; |
| |
| if (plane == OMAP_DSS_WB) |
| return 0; |
| |
| channel = dispc_ovl_get_channel_out(plane); |
| |
| return dispc_mgr_lclk_rate(channel); |
| } |
| |
| static void dispc_dump_clocks_channel(struct seq_file *s, enum omap_channel channel) |
| { |
| int lcd, pcd; |
| enum dss_clk_source lcd_clk_src; |
| |
| seq_printf(s, "- %s -\n", mgr_desc[channel].name); |
| |
| lcd_clk_src = dss_get_lcd_clk_source(channel); |
| |
| seq_printf(s, "%s clk source = %s\n", mgr_desc[channel].name, |
| dss_get_clk_source_name(lcd_clk_src)); |
| |
| dispc_mgr_get_lcd_divisor(channel, &lcd, &pcd); |
| |
| seq_printf(s, "lck\t\t%-16lulck div\t%u\n", |
| dispc_mgr_lclk_rate(channel), lcd); |
| seq_printf(s, "pck\t\t%-16lupck div\t%u\n", |
| dispc_mgr_pclk_rate(channel), pcd); |
| } |
| |
| void dispc_dump_clocks(struct seq_file *s) |
| { |
| int lcd; |
| u32 l; |
| enum dss_clk_source dispc_clk_src = dss_get_dispc_clk_source(); |
| |
| if (dispc_runtime_get()) |
| return; |
| |
| seq_printf(s, "- DISPC -\n"); |
| |
| seq_printf(s, "dispc fclk source = %s\n", |
| dss_get_clk_source_name(dispc_clk_src)); |
| |
| seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate()); |
| |
| if (dss_has_feature(FEAT_CORE_CLK_DIV)) { |
| seq_printf(s, "- DISPC-CORE-CLK -\n"); |
| l = dispc_read_reg(DISPC_DIVISOR); |
| lcd = FLD_GET(l, 23, 16); |
| |
| seq_printf(s, "lck\t\t%-16lulck div\t%u\n", |
| (dispc_fclk_rate()/lcd), lcd); |
| } |
| |
| dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD); |
| |
| if (dss_has_feature(FEAT_MGR_LCD2)) |
| dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD2); |
| if (dss_has_feature(FEAT_MGR_LCD3)) |
| dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD3); |
| |
| dispc_runtime_put(); |
| } |
| |
| static void dispc_dump_regs(struct seq_file *s) |
| { |
| int i, j; |
| const char *mgr_names[] = { |
| [OMAP_DSS_CHANNEL_LCD] = "LCD", |
| [OMAP_DSS_CHANNEL_DIGIT] = "TV", |
| [OMAP_DSS_CHANNEL_LCD2] = "LCD2", |
| [OMAP_DSS_CHANNEL_LCD3] = "LCD3", |
| }; |
| const char *ovl_names[] = { |
| [OMAP_DSS_GFX] = "GFX", |
| [OMAP_DSS_VIDEO1] = "VID1", |
| [OMAP_DSS_VIDEO2] = "VID2", |
| [OMAP_DSS_VIDEO3] = "VID3", |
| [OMAP_DSS_WB] = "WB", |
| }; |
| const char **p_names; |
| |
| #define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r)) |
| |
| if (dispc_runtime_get()) |
| return; |
| |
| /* DISPC common registers */ |
| DUMPREG(DISPC_REVISION); |
| DUMPREG(DISPC_SYSCONFIG); |
| DUMPREG(DISPC_SYSSTATUS); |
| DUMPREG(DISPC_IRQSTATUS); |
| DUMPREG(DISPC_IRQENABLE); |
| DUMPREG(DISPC_CONTROL); |
| DUMPREG(DISPC_CONFIG); |
| DUMPREG(DISPC_CAPABLE); |
| DUMPREG(DISPC_LINE_STATUS); |
| DUMPREG(DISPC_LINE_NUMBER); |
| if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) || |
| dss_has_feature(FEAT_ALPHA_FREE_ZORDER)) |
| DUMPREG(DISPC_GLOBAL_ALPHA); |
| if (dss_has_feature(FEAT_MGR_LCD2)) { |
| DUMPREG(DISPC_CONTROL2); |
| DUMPREG(DISPC_CONFIG2); |
| } |
| if (dss_has_feature(FEAT_MGR_LCD3)) { |
| DUMPREG(DISPC_CONTROL3); |
| DUMPREG(DISPC_CONFIG3); |
| } |
| if (dss_has_feature(FEAT_MFLAG)) |
| DUMPREG(DISPC_GLOBAL_MFLAG_ATTRIBUTE); |
| |
| #undef DUMPREG |
| |
| #define DISPC_REG(i, name) name(i) |
| #define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \ |
| (int)(48 - strlen(#r) - strlen(p_names[i])), " ", \ |
| dispc_read_reg(DISPC_REG(i, r))) |
| |
| p_names = mgr_names; |
| |
| /* DISPC channel specific registers */ |
| for (i = 0; i < dss_feat_get_num_mgrs(); i++) { |
| DUMPREG(i, DISPC_DEFAULT_COLOR); |
| DUMPREG(i, DISPC_TRANS_COLOR); |
| DUMPREG(i, DISPC_SIZE_MGR); |
| |
| if (i == OMAP_DSS_CHANNEL_DIGIT) |
| continue; |
| |
| DUMPREG(i, DISPC_TIMING_H); |
| DUMPREG(i, DISPC_TIMING_V); |
| DUMPREG(i, DISPC_POL_FREQ); |
| DUMPREG(i, DISPC_DIVISORo); |
| |
| DUMPREG(i, DISPC_DATA_CYCLE1); |
| DUMPREG(i, DISPC_DATA_CYCLE2); |
| DUMPREG(i, DISPC_DATA_CYCLE3); |
| |
| if (dss_has_feature(FEAT_CPR)) { |
| DUMPREG(i, DISPC_CPR_COEF_R); |
| DUMPREG(i, DISPC_CPR_COEF_G); |
| DUMPREG(i, DISPC_CPR_COEF_B); |
| } |
| } |
| |
| p_names = ovl_names; |
| |
| for (i = 0; i < dss_feat_get_num_ovls(); i++) { |
| DUMPREG(i, DISPC_OVL_BA0); |
| DUMPREG(i, DISPC_OVL_BA1); |
| DUMPREG(i, DISPC_OVL_POSITION); |
| DUMPREG(i, DISPC_OVL_SIZE); |
| DUMPREG(i, DISPC_OVL_ATTRIBUTES); |
| DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD); |
| DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS); |
| DUMPREG(i, DISPC_OVL_ROW_INC); |
| DUMPREG(i, DISPC_OVL_PIXEL_INC); |
| |
| if (dss_has_feature(FEAT_PRELOAD)) |
| DUMPREG(i, DISPC_OVL_PRELOAD); |
| if (dss_has_feature(FEAT_MFLAG)) |
| DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD); |
| |
| if (i == OMAP_DSS_GFX) { |
| DUMPREG(i, DISPC_OVL_WINDOW_SKIP); |
| DUMPREG(i, DISPC_OVL_TABLE_BA); |
| continue; |
| } |
| |
| DUMPREG(i, DISPC_OVL_FIR); |
| DUMPREG(i, DISPC_OVL_PICTURE_SIZE); |
| DUMPREG(i, DISPC_OVL_ACCU0); |
| DUMPREG(i, DISPC_OVL_ACCU1); |
| if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { |
| DUMPREG(i, DISPC_OVL_BA0_UV); |
| DUMPREG(i, DISPC_OVL_BA1_UV); |
| DUMPREG(i, DISPC_OVL_FIR2); |
| DUMPREG(i, DISPC_OVL_ACCU2_0); |
| DUMPREG(i, DISPC_OVL_ACCU2_1); |
| } |
| if (dss_has_feature(FEAT_ATTR2)) |
| DUMPREG(i, DISPC_OVL_ATTRIBUTES2); |
| } |
| |
| if (dispc.feat->has_writeback) { |
| i = OMAP_DSS_WB; |
| DUMPREG(i, DISPC_OVL_BA0); |
| DUMPREG(i, DISPC_OVL_BA1); |
| DUMPREG(i, DISPC_OVL_SIZE); |
| DUMPREG(i, DISPC_OVL_ATTRIBUTES); |
| DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD); |
| DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS); |
| DUMPREG(i, DISPC_OVL_ROW_INC); |
| DUMPREG(i, DISPC_OVL_PIXEL_INC); |
| |
| if (dss_has_feature(FEAT_MFLAG)) |
| DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD); |
| |
| DUMPREG(i, DISPC_OVL_FIR); |
| DUMPREG(i, DISPC_OVL_PICTURE_SIZE); |
| DUMPREG(i, DISPC_OVL_ACCU0); |
| DUMPREG(i, DISPC_OVL_ACCU1); |
| if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { |
| DUMPREG(i, DISPC_OVL_BA0_UV); |
| DUMPREG(i, DISPC_OVL_BA1_UV); |
| DUMPREG(i, DISPC_OVL_FIR2); |
| DUMPREG(i, DISPC_OVL_ACCU2_0); |
| DUMPREG(i, DISPC_OVL_ACCU2_1); |
| } |
| if (dss_has_feature(FEAT_ATTR2)) |
| DUMPREG(i, DISPC_OVL_ATTRIBUTES2); |
| } |
| |
| #undef DISPC_REG |
| #undef DUMPREG |
| |
| #define DISPC_REG(plane, name, i) name(plane, i) |
| #define DUMPREG(plane, name, i) \ |
| seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \ |
| (int)(46 - strlen(#name) - strlen(p_names[plane])), " ", \ |
| dispc_read_reg(DISPC_REG(plane, name, i))) |
| |
| /* Video pipeline coefficient registers */ |
| |
| /* start from OMAP_DSS_VIDEO1 */ |
| for (i = 1; i < dss_feat_get_num_ovls(); i++) { |
| for (j = 0; j < 8; j++) |
| DUMPREG(i, DISPC_OVL_FIR_COEF_H, j); |
| |
| for (j = 0; j < 8; j++) |
| DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j); |
| |
| for (j = 0; j < 5; j++) |
| DUMPREG(i, DISPC_OVL_CONV_COEF, j); |
| |
| if (dss_has_feature(FEAT_FIR_COEF_V)) { |
| for (j = 0; j < 8; j++) |
| DUMPREG(i, DISPC_OVL_FIR_COEF_V, j); |
| } |
| |
| if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) { |
| for (j = 0; j < 8; j++) |
| DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j); |
| |
| for (j = 0; j < 8; j++) |
| DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j); |
| |
| for (j = 0; j < 8; j++) |
| DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j); |
| } |
| } |
| |
| dispc_runtime_put(); |
| |
| #undef DISPC_REG |
| #undef DUMPREG |
| } |
| |
| /* calculate clock rates using dividers in cinfo */ |
| int dispc_calc_clock_rates(unsigned long dispc_fclk_rate, |
| struct dispc_clock_info *cinfo) |
| { |
| if (cinfo->lck_div > 255 || cinfo->lck_div == 0) |
| return -EINVAL; |
| if (cinfo->pck_div < 1 || cinfo->pck_div > 255) |
| return -EINVAL; |
| |
| cinfo->lck = dispc_fclk_rate / cinfo->lck_div; |
| cinfo->pck = cinfo->lck / cinfo->pck_div; |
| |
| return 0; |
| } |
| |
| bool dispc_div_calc(unsigned long dispc, |
| unsigned long pck_min, unsigned long pck_max, |
| dispc_div_calc_func func, void *data) |
| { |
| int lckd, lckd_start, lckd_stop; |
| int pckd, pckd_start, pckd_stop; |
| unsigned long pck, lck; |
| unsigned long lck_max; |
| unsigned long pckd_hw_min, pckd_hw_max; |
| unsigned min_fck_per_pck; |
| unsigned long fck; |
| |
| #ifdef CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK |
| min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK; |
| #else |
| min_fck_per_pck = 0; |
| #endif |
| |
| pckd_hw_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD); |
| pckd_hw_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD); |
| |
| lck_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); |
| |
| pck_min = pck_min ? pck_min : 1; |
| pck_max = pck_max ? pck_max : ULONG_MAX; |
| |
| lckd_start = max(DIV_ROUND_UP(dispc, lck_max), 1ul); |
| lckd_stop = min(dispc / pck_min, 255ul); |
| |
| for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) { |
| lck = dispc / lckd; |
| |
| pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min); |
| pckd_stop = min(lck / pck_min, pckd_hw_max); |
| |
| for (pckd = pckd_start; pckd <= pckd_stop; ++pckd) { |
| pck = lck / pckd; |
| |
| /* |
| * For OMAP2/3 the DISPC fclk is the same as LCD's logic |
| * clock, which means we're configuring DISPC fclk here |
| * also. Thus we need to use the calculated lck. For |
| * OMAP4+ the DISPC fclk is a separate clock. |
| */ |
| if (dss_has_feature(FEAT_CORE_CLK_DIV)) |
| fck = dispc_core_clk_rate(); |
| else |
| fck = lck; |
| |
| if (fck < pck * min_fck_per_pck) |
| continue; |
| |
| if (func(lckd, pckd, lck, pck, data)) |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void dispc_mgr_set_clock_div(enum omap_channel channel, |
| const struct dispc_clock_info *cinfo) |
| { |
| DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div); |
| DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div); |
| |
| dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div); |
| } |
| |
| int dispc_mgr_get_clock_div(enum omap_channel channel, |
| struct dispc_clock_info *cinfo) |
| { |
| unsigned long fck; |
| |
| fck = dispc_fclk_rate(); |
| |
| cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16); |
| cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0); |
| |
| cinfo->lck = fck / cinfo->lck_div; |
| cinfo->pck = cinfo->lck / cinfo->pck_div; |
| |
| return 0; |
| } |
| |
| u32 dispc_read_irqstatus(void) |
| { |
| return dispc_read_reg(DISPC_IRQSTATUS); |
| } |
| EXPORT_SYMBOL(dispc_read_irqstatus); |
| |
| void dispc_clear_irqstatus(u32 mask) |
| { |
| dispc_write_reg(DISPC_IRQSTATUS, mask); |
| } |
| EXPORT_SYMBOL(dispc_clear_irqstatus); |
| |
| u32 dispc_read_irqenable(void) |
| { |
| return dispc_read_reg(DISPC_IRQENABLE); |
| } |
| EXPORT_SYMBOL(dispc_read_irqenable); |
| |
| void dispc_write_irqenable(u32 mask) |
| { |
| u32 old_mask = dispc_read_reg(DISPC_IRQENABLE); |
| |
| /* clear the irqstatus for newly enabled irqs */ |
| dispc_clear_irqstatus((mask ^ old_mask) & mask); |
| |
| dispc_write_reg(DISPC_IRQENABLE, mask); |
| } |
| EXPORT_SYMBOL(dispc_write_irqenable); |
| |
| void dispc_enable_sidle(void) |
| { |
| REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */ |
| } |
| |
| void dispc_disable_sidle(void) |
| { |
| REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */ |
| } |
| |
| u32 dispc_mgr_gamma_size(enum omap_channel channel) |
| { |
| const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma; |
| |
| if (!dispc.feat->has_gamma_table) |
| return 0; |
| |
| return gdesc->len; |
| } |
| EXPORT_SYMBOL(dispc_mgr_gamma_size); |
| |
| static void dispc_mgr_write_gamma_table(enum omap_channel channel) |
| { |
| const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma; |
| u32 *table = dispc.gamma_table[channel]; |
| unsigned int i; |
| |
| DSSDBG("%s: channel %d\n", __func__, channel); |
| |
| for (i = 0; i < gdesc->len; ++i) { |
| u32 v = table[i]; |
| |
| if (gdesc->has_index) |
| v |= i << 24; |
| else if (i == 0) |
| v |= 1 << 31; |
| |
| dispc_write_reg(gdesc->reg, v); |
| } |
| } |
| |
| static void dispc_restore_gamma_tables(void) |
| { |
| DSSDBG("%s()\n", __func__); |
| |
| if (!dispc.feat->has_gamma_table) |
| return; |
| |
| dispc_mgr_write_gamma_table(OMAP_DSS_CHANNEL_LCD); |
| |
| dispc_mgr_write_gamma_table(OMAP_DSS_CHANNEL_DIGIT); |
| |
| if (dss_has_feature(FEAT_MGR_LCD2)) |
| dispc_mgr_write_gamma_table(OMAP_DSS_CHANNEL_LCD2); |
| |
| if (dss_has_feature(FEAT_MGR_LCD3)) |
| dispc_mgr_write_gamma_table(OMAP_DSS_CHANNEL_LCD3); |
| } |
| |
| static const struct drm_color_lut dispc_mgr_gamma_default_lut[] = { |
| { .red = 0, .green = 0, .blue = 0, }, |
| { .red = U16_MAX, .green = U16_MAX, .blue = U16_MAX, }, |
| }; |
| |
| void dispc_mgr_set_gamma(enum omap_channel channel, |
| const struct drm_color_lut *lut, |
| unsigned int length) |
| { |
| const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma; |
| u32 *table = dispc.gamma_table[channel]; |
| uint i; |
| |
| DSSDBG("%s: channel %d, lut len %u, hw len %u\n", __func__, |
| channel, length, gdesc->len); |
| |
| if (!dispc.feat->has_gamma_table) |
| return; |
| |
| if (lut == NULL || length < 2) { |
| lut = dispc_mgr_gamma_default_lut; |
| length = ARRAY_SIZE(dispc_mgr_gamma_default_lut); |
| } |
| |
| for (i = 0; i < length - 1; ++i) { |
| uint first = i * (gdesc->len - 1) / (length - 1); |
| uint last = (i + 1) * (gdesc->len - 1) / (length - 1); |
| uint w = last - first; |
| u16 r, g, b; |
| uint j; |
| |
| if (w == 0) |
| continue; |
| |
| for (j = 0; j <= w; j++) { |
| r = (lut[i].red * (w - j) + lut[i+1].red * j) / w; |
| g = (lut[i].green * (w - j) + lut[i+1].green * j) / w; |
| b = (lut[i].blue * (w - j) + lut[i+1].blue * j) / w; |
| |
| r >>= 16 - gdesc->bits; |
| g >>= 16 - gdesc->bits; |
| b >>= 16 - gdesc->bits; |
| |
| table[first + j] = (r << (gdesc->bits * 2)) | |
| (g << gdesc->bits) | b; |
| } |
| } |
| |
| if (dispc.is_enabled) |
| dispc_mgr_write_gamma_table(channel); |
| } |
| EXPORT_SYMBOL(dispc_mgr_set_gamma); |
| |
| static int dispc_init_gamma_tables(void) |
| { |
| int channel; |
| |
| if (!dispc.feat->has_gamma_table) |
| return 0; |
| |
| for (channel = 0; channel < ARRAY_SIZE(dispc.gamma_table); channel++) { |
| const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma; |
| u32 *gt; |
| |
| if (channel == OMAP_DSS_CHANNEL_LCD2 && |
| !dss_has_feature(FEAT_MGR_LCD2)) |
| continue; |
| |
| if (channel == OMAP_DSS_CHANNEL_LCD3 && |
| !dss_has_feature(FEAT_MGR_LCD3)) |
| continue; |
| |
| gt = devm_kmalloc_array(&dispc.pdev->dev, gdesc->len, |
| sizeof(u32), GFP_KERNEL); |
| if (!gt) |
| return -ENOMEM; |
| |
| dispc.gamma_table[channel] = gt; |
| |
| dispc_mgr_set_gamma(channel, NULL, 0); |
| } |
| return 0; |
| } |
| |
| static void _omap_dispc_initial_config(void) |
| { |
| u32 l; |
| |
| /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */ |
| if (dss_has_feature(FEAT_CORE_CLK_DIV)) { |
| l = dispc_read_reg(DISPC_DIVISOR); |
| /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */ |
| l = FLD_MOD(l, 1, 0, 0); |
| l = FLD_MOD(l, 1, 23, 16); |
| dispc_write_reg(DISPC_DIVISOR, l); |
| |
| dispc.core_clk_rate = dispc_fclk_rate(); |
| } |
| |
| /* Use gamma table mode, instead of palette mode */ |
| if (dispc.feat->has_gamma_table) |
| REG_FLD_MOD(DISPC_CONFIG, 1, 3, 3); |
| |
| /* For older DSS versions (FEAT_FUNCGATED) this enables |
| * func-clock auto-gating. For newer versions |
| * (dispc.feat->has_gamma_table) this enables tv-out gamma tables. |
| */ |
| if (dss_has_feature(FEAT_FUNCGATED) || dispc.feat->has_gamma_table) |
| REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9); |
| |
| dispc_setup_color_conv_coef(); |
| |
| dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY); |
| |
| dispc_init_fifos(); |
| |
| dispc_configure_burst_sizes(); |
| |
| dispc_ovl_enable_zorder_planes(); |
| |
| if (dispc.feat->mstandby_workaround) |
| REG_FLD_MOD(DISPC_MSTANDBY_CTRL, 1, 0, 0); |
| |
| if (dss_has_feature(FEAT_MFLAG)) |
| dispc_init_mflag(); |
| } |
| |
| static const struct dispc_features omap24xx_dispc_feats = { |
| .sw_start = 5, |
| .fp_start = 15, |
| .bp_start = 27, |
| .sw_max = 64, |
| .vp_max = 255, |
| .hp_max = 256, |
| .mgr_width_start = 10, |
| .mgr_height_start = 26, |
| .mgr_width_max = 2048, |
| .mgr_height_max = 2048, |
| .max_lcd_pclk = 66500000, |
| .calc_scaling = dispc_ovl_calc_scaling_24xx, |
| .calc_core_clk = calc_core_clk_24xx, |
| .num_fifos = 3, |
| .no_framedone_tv = true, |
| .set_max_preload = false, |
| .last_pixel_inc_missing = true, |
| }; |
| |
| static const struct dispc_features omap34xx_rev1_0_dispc_feats = { |
| .sw_start = 5, |
| .fp_start = 15, |
| .bp_start = 27, |
| .sw_max = 64, |
| .vp_max = 255, |
| .hp_max = 256, |
| .mgr_width_start = 10, |
| .mgr_height_start = 26, |
| .mgr_width_max = 2048, |
| .mgr_height_max = 2048, |
| .max_lcd_pclk = 173000000, |
| .max_tv_pclk = 59000000, |
| .calc_scaling = dispc_ovl_calc_scaling_34xx, |
| .calc_core_clk = calc_core_clk_34xx, |
| .num_fifos = 3, |
| .no_framedone_tv = true, |
| .set_max_preload = false, |
| .last_pixel_inc_missing = true, |
| }; |
| |
| static const struct dispc_features omap34xx_rev3_0_dispc_feats = { |
| .sw_start = 7, |
| .fp_start = 19, |
| .bp_start = 31, |
| .sw_max = 256, |
| .vp_max = 4095, |
| .hp_max = 4096, |
| .mgr_width_start = 10, |
| .mgr_height_start = 26, |
| .mgr_width_max = 2048, |
| .mgr_height_max = 2048, |
| .max_lcd_pclk = 173000000, |
| .max_tv_pclk = 59000000, |
| .calc_scaling = dispc_ovl_calc_scaling_34xx, |
| .calc_core_clk = calc_core_clk_34xx, |
| .num_fifos = 3, |
| .no_framedone_tv = true, |
| .set_max_preload = false, |
| .last_pixel_inc_missing = true, |
| }; |
| |
| static const struct dispc_features omap44xx_dispc_feats = { |
| .sw_start = 7, |
| .fp_start = 19, |
| .bp_start = 31, |
| .sw_max = 256, |
| .vp_max = 4095, |
| .hp_max = 4096, |
| .mgr_width_start = 10, |
| .mgr_height_start = 26, |
| .mgr_width_max = 2048, |
| .mgr_height_max = 2048, |
| .max_lcd_pclk = 170000000, |
| .max_tv_pclk = 185625000, |
| .calc_scaling = dispc_ovl_calc_scaling_44xx, |
| .calc_core_clk = calc_core_clk_44xx, |
| .num_fifos = 5, |
| .gfx_fifo_workaround = true, |
| .set_max_preload = true, |
| .supports_sync_align = true, |
| .has_writeback = true, |
| .supports_double_pixel = true, |
| .reverse_ilace_field_order = true, |
| .has_gamma_table = true, |
| .has_gamma_i734_bug = true, |
| }; |
| |
| static const struct dispc_features omap54xx_dispc_feats = { |
| .sw_start = 7, |
| .fp_start = 19, |
| .bp_start = 31, |
| .sw_max = 256, |
| .vp_max = 4095, |
| .hp_max = 4096, |
| .mgr_width_start = 11, |
| .mgr_height_start = 27, |
| .mgr_width_max = 4096, |
| .mgr_height_max = 4096, |
| .max_lcd_pclk = 170000000, |
| .max_tv_pclk = 186000000, |
| .calc_scaling = dispc_ovl_calc_scaling_44xx, |
| .calc_core_clk = calc_core_clk_44xx, |
| .num_fifos = 5, |
| .gfx_fifo_workaround = true, |
| .mstandby_workaround = true, |
| .set_max_preload = true, |
| .supports_sync_align = true, |
| .has_writeback = true, |
| .supports_double_pixel = true, |
| .reverse_ilace_field_order = true, |
| .has_gamma_table = true, |
| .has_gamma_i734_bug = true, |
| }; |
| |
| static int dispc_init_features(struct platform_device *pdev) |
| { |
| const struct dispc_features *src; |
| struct dispc_features *dst; |
| |
| dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL); |
| if (!dst) { |
| dev_err(&pdev->dev, "Failed to allocate DISPC Features\n"); |
| return -ENOMEM; |
| } |
| |
| switch (omapdss_get_version()) { |
| case OMAPDSS_VER_OMAP24xx: |
| src = &omap24xx_dispc_feats; |
| break; |
| |
| case OMAPDSS_VER_OMAP34xx_ES1: |
| src = &omap34xx_rev1_0_dispc_feats; |
| break; |
| |
| case OMAPDSS_VER_OMAP34xx_ES3: |
| case OMAPDSS_VER_OMAP3630: |
| case OMAPDSS_VER_AM35xx: |
| case OMAPDSS_VER_AM43xx: |
| src = &omap34xx_rev3_0_dispc_feats; |
| break; |
| |
| case OMAPDSS_VER_OMAP4430_ES1: |
| case OMAPDSS_VER_OMAP4430_ES2: |
| case OMAPDSS_VER_OMAP4: |
| src = &omap44xx_dispc_feats; |
| break; |
| |
| case OMAPDSS_VER_OMAP5: |
| case OMAPDSS_VER_DRA7xx: |
| src = &omap54xx_dispc_feats; |
| break; |
| |
| default: |
| return -ENODEV; |
| } |
| |
| memcpy(dst, src, sizeof(*dst)); |
| dispc.feat = dst; |
| |
| return 0; |
| } |
| |
| static irqreturn_t dispc_irq_handler(int irq, void *arg) |
| { |
| if (!dispc.is_enabled) |
| return IRQ_NONE; |
| |
| return dispc.user_handler(irq, dispc.user_data); |
| } |
| |
| int dispc_request_irq(irq_handler_t handler, void *dev_id) |
| { |
| int r; |
| |
| if (dispc.user_handler != NULL) |
| return -EBUSY; |
| |
| dispc.user_handler = handler; |
| dispc.user_data = dev_id; |
| |
| /* ensure the dispc_irq_handler sees the values above */ |
| smp_wmb(); |
| |
| r = devm_request_irq(&dispc.pdev->dev, dispc.irq, dispc_irq_handler, |
| IRQF_SHARED, "OMAP DISPC", &dispc); |
| if (r) { |
| dispc.user_handler = NULL; |
| dispc.user_data = NULL; |
| } |
| |
| return r; |
| } |
| EXPORT_SYMBOL(dispc_request_irq); |
| |
| void dispc_free_irq(void *dev_id) |
| { |
| devm_free_irq(&dispc.pdev->dev, dispc.irq, &dispc); |
| |
| dispc.user_handler = NULL; |
| dispc.user_data = NULL; |
| } |
| EXPORT_SYMBOL(dispc_free_irq); |
| |
| /* |
| * Workaround for errata i734 in DSS dispc |
| * - LCD1 Gamma Correction Is Not Working When GFX Pipe Is Disabled |
| * |
| * For gamma tables to work on LCD1 the GFX plane has to be used at |
| * least once after DSS HW has come out of reset. The workaround |
| * sets up a minimal LCD setup with GFX plane and waits for one |
| * vertical sync irq before disabling the setup and continuing with |
| * the context restore. The physical outputs are gated during the |
| * operation. This workaround requires that gamma table's LOADMODE |
| * is set to 0x2 in DISPC_CONTROL1 register. |
| * |
| * For details see: |
| * OMAP543x Multimedia Device Silicon Revision 2.0 Silicon Errata |
| * Literature Number: SWPZ037E |
| * Or some other relevant errata document for the DSS IP version. |
| */ |
| |
| static const struct dispc_errata_i734_data { |
| struct videomode vm; |
| struct omap_overlay_info ovli; |
| struct omap_overlay_manager_info mgri; |
| struct dss_lcd_mgr_config lcd_conf; |
| } i734 = { |
| .vm = { |
| .hactive = 8, .vactive = 1, |
| .pixelclock = 16000000, |
| .hsync_len = 8, .hfront_porch = 4, .hback_porch = 4, |
| .vsync_len = 1, .vfront_porch = 1, .vback_porch = 1, |
| |
| .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW | |
| DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE | |
| DISPLAY_FLAGS_PIXDATA_POSEDGE, |
| }, |
| .ovli = { |
| .screen_width = 1, |
| .width = 1, .height = 1, |
| .color_mode = OMAP_DSS_COLOR_RGB24U, |
| .rotation = OMAP_DSS_ROT_0, |
| .rotation_type = OMAP_DSS_ROT_DMA, |
| .mirror = 0, |
| .pos_x = 0, .pos_y = 0, |
| .out_width = 0, .out_height = 0, |
| .global_alpha = 0xff, |
| .pre_mult_alpha = 0, |
| .zorder = 0, |
| }, |
| .mgri = { |
| .default_color = 0, |
| .trans_enabled = false, |
| .partial_alpha_enabled = false, |
| .cpr_enable = false, |
| }, |
| .lcd_conf = { |
| .io_pad_mode = DSS_IO_PAD_MODE_BYPASS, |
| .stallmode = false, |
| .fifohandcheck = false, |
| .clock_info = { |
| .lck_div = 1, |
| .pck_div = 2, |
| }, |
| .video_port_width = 24, |
| .lcden_sig_polarity = 0, |
| }, |
| }; |
| |
| static struct i734_buf { |
| size_t size; |
| dma_addr_t paddr; |
| void *vaddr; |
| } i734_buf; |
| |
| static int dispc_errata_i734_wa_init(void) |
| { |
| if (!dispc.feat->has_gamma_i734_bug) |
| return 0; |
| |
| i734_buf.size = i734.ovli.width * i734.ovli.height * |
| color_mode_to_bpp(i734.ovli.color_mode) / 8; |
| |
| i734_buf.vaddr = dma_alloc_writecombine(&dispc.pdev->dev, i734_buf.size, |
| &i734_buf.paddr, GFP_KERNEL); |
| if (!i734_buf.vaddr) { |
| dev_err(&dispc.pdev->dev, "%s: dma_alloc_writecombine failed", |
| __func__); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static void dispc_errata_i734_wa_fini(void) |
| { |
| if (!dispc.feat->has_gamma_i734_bug) |
| return; |
| |
| dma_free_writecombine(&dispc.pdev->dev, i734_buf.size, i734_buf.vaddr, |
| i734_buf.paddr); |
| } |
| |
| static void dispc_errata_i734_wa(void) |
| { |
| u32 framedone_irq = dispc_mgr_get_framedone_irq(OMAP_DSS_CHANNEL_LCD); |
| struct omap_overlay_info ovli; |
| struct dss_lcd_mgr_config lcd_conf; |
| u32 gatestate; |
| unsigned int count; |
| |
| if (!dispc.feat->has_gamma_i734_bug) |
| return; |
| |
| gatestate = REG_GET(DISPC_CONFIG, 8, 4); |
| |
| ovli = i734.ovli; |
| ovli.paddr = i734_buf.paddr; |
| lcd_conf = i734.lcd_conf; |
| |
| /* Gate all LCD1 outputs */ |
| REG_FLD_MOD(DISPC_CONFIG, 0x1f, 8, 4); |
| |
| /* Setup and enable GFX plane */ |
| dispc_ovl_set_channel_out(OMAP_DSS_GFX, OMAP_DSS_CHANNEL_LCD); |
| dispc_ovl_setup(OMAP_DSS_GFX, &ovli, false, &i734.vm, false); |
| dispc_ovl_enable(OMAP_DSS_GFX, true); |
| |
| /* Set up and enable display manager for LCD1 */ |
| dispc_mgr_setup(OMAP_DSS_CHANNEL_LCD, &i734.mgri); |
| dispc_calc_clock_rates(dss_get_dispc_clk_rate(), |
| &lcd_conf.clock_info); |
| dispc_mgr_set_lcd_config(OMAP_DSS_CHANNEL_LCD, &lcd_conf); |
| dispc_mgr_set_timings(OMAP_DSS_CHANNEL_LCD, &i734.vm); |
| |
| dispc_clear_irqstatus(framedone_irq); |
| |
| /* Enable and shut the channel to produce just one frame */ |
| dispc_mgr_enable(OMAP_DSS_CHANNEL_LCD, true); |
| dispc_mgr_enable(OMAP_DSS_CHANNEL_LCD, false); |
| |
| /* Busy wait for framedone. We can't fiddle with irq handlers |
| * in PM resume. Typically the loop runs less than 5 times and |
| * waits less than a micro second. |
| */ |
| count = 0; |
| while (!(dispc_read_irqstatus() & framedone_irq)) { |
| if (count++ > 10000) { |
| dev_err(&dispc.pdev->dev, "%s: framedone timeout\n", |
| __func__); |
| break; |
| } |
| } |
| dispc_ovl_enable(OMAP_DSS_GFX, false); |
| |
| /* Clear all irq bits before continuing */ |
| dispc_clear_irqstatus(0xffffffff); |
| |
| /* Restore the original state to LCD1 output gates */ |
| REG_FLD_MOD(DISPC_CONFIG, gatestate, 8, 4); |
| } |
| |
| /* DISPC HW IP initialisation */ |
| static int dispc_bind(struct device *dev, struct device *master, void *data) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| u32 rev; |
| int r = 0; |
| struct resource *dispc_mem; |
| struct device_node *np = pdev->dev.of_node; |
| |
| dispc.pdev = pdev; |
| |
| spin_lock_init(&dispc.control_lock); |
| |
| r = dispc_init_features(dispc.pdev); |
| if (r) |
| return r; |
| |
| r = dispc_errata_i734_wa_init(); |
| if (r) |
| return r; |
| |
| dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0); |
| if (!dispc_mem) { |
| DSSERR("can't get IORESOURCE_MEM DISPC\n"); |
| return -EINVAL; |
| } |
| |
| dispc.base = devm_ioremap(&pdev->dev, dispc_mem->start, |
| resource_size(dispc_mem)); |
| if (!dispc.base) { |
| DSSERR("can't ioremap DISPC\n"); |
| return -ENOMEM; |
| } |
| |
| dispc.irq = platform_get_irq(dispc.pdev, 0); |
| if (dispc.irq < 0) { |
| DSSERR("platform_get_irq failed\n"); |
| return -ENODEV; |
| } |
| |
| if (np && of_property_read_bool(np, "syscon-pol")) { |
| dispc.syscon_pol = syscon_regmap_lookup_by_phandle(np, "syscon-pol"); |
| if (IS_ERR(dispc.syscon_pol)) { |
| dev_err(&pdev->dev, "failed to get syscon-pol regmap\n"); |
| return PTR_ERR(dispc.syscon_pol); |
| } |
| |
| if (of_property_read_u32_index(np, "syscon-pol", 1, |
| &dispc.syscon_pol_offset)) { |
| dev_err(&pdev->dev, "failed to get syscon-pol offset\n"); |
| return -EINVAL; |
| } |
| } |
| |
| r = dispc_init_gamma_tables(); |
| if (r) |
| return r; |
| |
| pm_runtime_enable(&pdev->dev); |
| |
| r = dispc_runtime_get(); |
| if (r) |
| goto err_runtime_get; |
| |
| _omap_dispc_initial_config(); |
| |
| rev = dispc_read_reg(DISPC_REVISION); |
| dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n", |
| FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0)); |
| |
| dispc_runtime_put(); |
| |
| dss_debugfs_create_file("dispc", dispc_dump_regs); |
| |
| return 0; |
| |
| err_runtime_get: |
| pm_runtime_disable(&pdev->dev); |
| return r; |
| } |
| |
| static void dispc_unbind(struct device *dev, struct device *master, |
| void *data) |
| { |
| pm_runtime_disable(dev); |
| |
| dispc_errata_i734_wa_fini(); |
| } |
| |
| static const struct component_ops dispc_component_ops = { |
| .bind = dispc_bind, |
| .unbind = dispc_unbind, |
| }; |
| |
| static int dispc_probe(struct platform_device *pdev) |
| { |
| return component_add(&pdev->dev, &dispc_component_ops); |
| } |
| |
| static int dispc_remove(struct platform_device *pdev) |
| { |
| component_del(&pdev->dev, &dispc_component_ops); |
| return 0; |
| } |
| |
| static int dispc_runtime_suspend(struct device *dev) |
| { |
| dispc.is_enabled = false; |
| /* ensure the dispc_irq_handler sees the is_enabled value */ |
| smp_wmb(); |
| /* wait for current handler to finish before turning the DISPC off */ |
| synchronize_irq(dispc.irq); |
| |
| dispc_save_context(); |
| |
| return 0; |
| } |
| |
| static int dispc_runtime_resume(struct device *dev) |
| { |
| /* |
| * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME) |
| * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in |
| * _omap_dispc_initial_config(). We can thus use it to detect if |
| * we have lost register context. |
| */ |
| if (REG_GET(DISPC_CONFIG, 2, 1) != OMAP_DSS_LOAD_FRAME_ONLY) { |
| _omap_dispc_initial_config(); |
| |
| dispc_errata_i734_wa(); |
| |
| dispc_restore_context(); |
| |
| dispc_restore_gamma_tables(); |
| } |
| |
| dispc.is_enabled = true; |
| /* ensure the dispc_irq_handler sees the is_enabled value */ |
| smp_wmb(); |
| |
| return 0; |
| } |
| |
| static const struct dev_pm_ops dispc_pm_ops = { |
| .runtime_suspend = dispc_runtime_suspend, |
| .runtime_resume = dispc_runtime_resume, |
| }; |
| |
| static const struct of_device_id dispc_of_match[] = { |
| { .compatible = "ti,omap2-dispc", }, |
| { .compatible = "ti,omap3-dispc", }, |
| { .compatible = "ti,omap4-dispc", }, |
| { .compatible = "ti,omap5-dispc", }, |
| { .compatible = "ti,dra7-dispc", }, |
| {}, |
| }; |
| |
| static struct platform_driver omap_dispchw_driver = { |
| .probe = dispc_probe, |
| .remove = dispc_remove, |
| .driver = { |
| .name = "omapdss_dispc", |
| .pm = &dispc_pm_ops, |
| .of_match_table = dispc_of_match, |
| .suppress_bind_attrs = true, |
| }, |
| }; |
| |
| int __init dispc_init_platform_driver(void) |
| { |
| return platform_driver_register(&omap_dispchw_driver); |
| } |
| |
| void dispc_uninit_platform_driver(void) |
| { |
| platform_driver_unregister(&omap_dispchw_driver); |
| } |