| /* |
| * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * SH-Mobile High-Definition Multimedia Interface (HDMI) driver |
| * for SLISHDMI13T and SLIPHDMIT IP cores |
| * |
| * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| */ |
| |
| #include <linux/irq.h> |
| #include <linux/delay.h> |
| #include <linux/err.h> |
| #include <linux/clk.h> |
| #include <linux/regmap.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> |
| #include <linux/of_device.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/drm_edid.h> |
| #include <drm/drm_encoder_slave.h> |
| |
| #include "ipu-v3/imx-ipu-v3.h" |
| #include "imx-hdmi.h" |
| #include "imx-drm.h" |
| |
| #define HDMI_EDID_LEN 512 |
| |
| #define RGB 0 |
| #define YCBCR444 1 |
| #define YCBCR422_16BITS 2 |
| #define YCBCR422_8BITS 3 |
| #define XVYCC444 4 |
| |
| enum hdmi_datamap { |
| RGB444_8B = 0x01, |
| RGB444_10B = 0x03, |
| RGB444_12B = 0x05, |
| RGB444_16B = 0x07, |
| YCbCr444_8B = 0x09, |
| YCbCr444_10B = 0x0B, |
| YCbCr444_12B = 0x0D, |
| YCbCr444_16B = 0x0F, |
| YCbCr422_8B = 0x16, |
| YCbCr422_10B = 0x14, |
| YCbCr422_12B = 0x12, |
| }; |
| |
| enum hdmi_colorimetry { |
| ITU601, |
| ITU709, |
| }; |
| |
| enum imx_hdmi_devtype { |
| IMX6Q_HDMI, |
| IMX6DL_HDMI, |
| }; |
| |
| static const u16 csc_coeff_default[3][4] = { |
| { 0x2000, 0x0000, 0x0000, 0x0000 }, |
| { 0x0000, 0x2000, 0x0000, 0x0000 }, |
| { 0x0000, 0x0000, 0x2000, 0x0000 } |
| }; |
| |
| static const u16 csc_coeff_rgb_out_eitu601[3][4] = { |
| { 0x2000, 0x6926, 0x74fd, 0x010e }, |
| { 0x2000, 0x2cdd, 0x0000, 0x7e9a }, |
| { 0x2000, 0x0000, 0x38b4, 0x7e3b } |
| }; |
| |
| static const u16 csc_coeff_rgb_out_eitu709[3][4] = { |
| { 0x2000, 0x7106, 0x7a02, 0x00a7 }, |
| { 0x2000, 0x3264, 0x0000, 0x7e6d }, |
| { 0x2000, 0x0000, 0x3b61, 0x7e25 } |
| }; |
| |
| static const u16 csc_coeff_rgb_in_eitu601[3][4] = { |
| { 0x2591, 0x1322, 0x074b, 0x0000 }, |
| { 0x6535, 0x2000, 0x7acc, 0x0200 }, |
| { 0x6acd, 0x7534, 0x2000, 0x0200 } |
| }; |
| |
| static const u16 csc_coeff_rgb_in_eitu709[3][4] = { |
| { 0x2dc5, 0x0d9b, 0x049e, 0x0000 }, |
| { 0x62f0, 0x2000, 0x7d11, 0x0200 }, |
| { 0x6756, 0x78ab, 0x2000, 0x0200 } |
| }; |
| |
| struct hdmi_vmode { |
| bool mdvi; |
| bool mhsyncpolarity; |
| bool mvsyncpolarity; |
| bool minterlaced; |
| bool mdataenablepolarity; |
| |
| unsigned int mpixelclock; |
| unsigned int mpixelrepetitioninput; |
| unsigned int mpixelrepetitionoutput; |
| }; |
| |
| struct hdmi_data_info { |
| unsigned int enc_in_format; |
| unsigned int enc_out_format; |
| unsigned int enc_color_depth; |
| unsigned int colorimetry; |
| unsigned int pix_repet_factor; |
| unsigned int hdcp_enable; |
| struct hdmi_vmode video_mode; |
| }; |
| |
| struct imx_hdmi { |
| struct drm_connector connector; |
| struct imx_drm_connector *imx_drm_connector; |
| struct drm_encoder encoder; |
| struct imx_drm_encoder *imx_drm_encoder; |
| |
| enum imx_hdmi_devtype dev_type; |
| struct device *dev; |
| struct clk *isfr_clk; |
| struct clk *iahb_clk; |
| |
| struct hdmi_data_info hdmi_data; |
| int vic; |
| |
| u8 edid[HDMI_EDID_LEN]; |
| bool cable_plugin; |
| |
| bool phy_enabled; |
| struct drm_display_mode previous_mode; |
| |
| struct regmap *regmap; |
| struct i2c_adapter *ddc; |
| void __iomem *regs; |
| |
| unsigned long pixel_clk_rate; |
| unsigned int sample_rate; |
| int ratio; |
| }; |
| |
| static void imx_hdmi_set_ipu_di_mux(struct imx_hdmi *hdmi, int ipu_di) |
| { |
| regmap_update_bits(hdmi->regmap, IOMUXC_GPR3, |
| IMX6Q_GPR3_HDMI_MUX_CTL_MASK, |
| ipu_di << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT); |
| } |
| |
| static inline void hdmi_writeb(struct imx_hdmi *hdmi, u8 val, int offset) |
| { |
| writeb(val, hdmi->regs + offset); |
| } |
| |
| static inline u8 hdmi_readb(struct imx_hdmi *hdmi, int offset) |
| { |
| return readb(hdmi->regs + offset); |
| } |
| |
| static void hdmi_mask_writeb(struct imx_hdmi *hdmi, u8 data, unsigned int reg, |
| u8 shift, u8 mask) |
| { |
| u8 value = hdmi_readb(hdmi, reg) & ~mask; |
| value |= (data << shift) & mask; |
| hdmi_writeb(hdmi, value, reg); |
| } |
| |
| static void hdmi_set_clock_regenerator_n(struct imx_hdmi *hdmi, |
| unsigned int value) |
| { |
| u8 val; |
| |
| hdmi_writeb(hdmi, value & 0xff, HDMI_AUD_N1); |
| hdmi_writeb(hdmi, (value >> 8) & 0xff, HDMI_AUD_N2); |
| hdmi_writeb(hdmi, (value >> 16) & 0x0f, HDMI_AUD_N3); |
| |
| /* nshift factor = 0 */ |
| val = hdmi_readb(hdmi, HDMI_AUD_CTS3); |
| val &= ~HDMI_AUD_CTS3_N_SHIFT_MASK; |
| hdmi_writeb(hdmi, val, HDMI_AUD_CTS3); |
| } |
| |
| static void hdmi_regenerate_cts(struct imx_hdmi *hdmi, unsigned int cts) |
| { |
| u8 val; |
| |
| /* Must be set/cleared first */ |
| val = hdmi_readb(hdmi, HDMI_AUD_CTS3); |
| val &= ~HDMI_AUD_CTS3_CTS_MANUAL; |
| hdmi_writeb(hdmi, val, HDMI_AUD_CTS3); |
| |
| hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1); |
| hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); |
| hdmi_writeb(hdmi, ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) | |
| HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); |
| } |
| |
| static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk, |
| unsigned int ratio) |
| { |
| unsigned int n = (128 * freq) / 1000; |
| |
| switch (freq) { |
| case 32000: |
| if (pixel_clk == 25170000) |
| n = (ratio == 150) ? 9152 : 4576; |
| else if (pixel_clk == 27020000) |
| n = (ratio == 150) ? 8192 : 4096; |
| else if (pixel_clk == 74170000 || pixel_clk == 148350000) |
| n = 11648; |
| else |
| n = 4096; |
| break; |
| |
| case 44100: |
| if (pixel_clk == 25170000) |
| n = 7007; |
| else if (pixel_clk == 74170000) |
| n = 17836; |
| else if (pixel_clk == 148350000) |
| n = (ratio == 150) ? 17836 : 8918; |
| else |
| n = 6272; |
| break; |
| |
| case 48000: |
| if (pixel_clk == 25170000) |
| n = (ratio == 150) ? 9152 : 6864; |
| else if (pixel_clk == 27020000) |
| n = (ratio == 150) ? 8192 : 6144; |
| else if (pixel_clk == 74170000) |
| n = 11648; |
| else if (pixel_clk == 148350000) |
| n = (ratio == 150) ? 11648 : 5824; |
| else |
| n = 6144; |
| break; |
| |
| case 88200: |
| n = hdmi_compute_n(44100, pixel_clk, ratio) * 2; |
| break; |
| |
| case 96000: |
| n = hdmi_compute_n(48000, pixel_clk, ratio) * 2; |
| break; |
| |
| case 176400: |
| n = hdmi_compute_n(44100, pixel_clk, ratio) * 4; |
| break; |
| |
| case 192000: |
| n = hdmi_compute_n(48000, pixel_clk, ratio) * 4; |
| break; |
| |
| default: |
| break; |
| } |
| |
| return n; |
| } |
| |
| static unsigned int hdmi_compute_cts(unsigned int freq, unsigned long pixel_clk, |
| unsigned int ratio) |
| { |
| unsigned int cts = 0; |
| |
| pr_debug("%s: freq: %d pixel_clk: %ld ratio: %d\n", __func__, freq, |
| pixel_clk, ratio); |
| |
| switch (freq) { |
| case 32000: |
| if (pixel_clk == 297000000) { |
| cts = 222750; |
| break; |
| } |
| case 48000: |
| case 96000: |
| case 192000: |
| switch (pixel_clk) { |
| case 25200000: |
| case 27000000: |
| case 54000000: |
| case 74250000: |
| case 148500000: |
| cts = pixel_clk / 1000; |
| break; |
| case 297000000: |
| cts = 247500; |
| break; |
| /* |
| * All other TMDS clocks are not supported by |
| * DWC_hdmi_tx. The TMDS clocks divided or |
| * multiplied by 1,001 coefficients are not |
| * supported. |
| */ |
| default: |
| break; |
| } |
| break; |
| case 44100: |
| case 88200: |
| case 176400: |
| switch (pixel_clk) { |
| case 25200000: |
| cts = 28000; |
| break; |
| case 27000000: |
| cts = 30000; |
| break; |
| case 54000000: |
| cts = 60000; |
| break; |
| case 74250000: |
| cts = 82500; |
| break; |
| case 148500000: |
| cts = 165000; |
| break; |
| case 297000000: |
| cts = 247500; |
| break; |
| default: |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| if (ratio == 100) |
| return cts; |
| else |
| return (cts * ratio) / 100; |
| } |
| |
| static void hdmi_get_pixel_clk(struct imx_hdmi *hdmi) |
| { |
| unsigned long rate; |
| |
| rate = 65000000; /* FIXME */ |
| |
| if (rate) |
| hdmi->pixel_clk_rate = rate; |
| } |
| |
| static void hdmi_set_clk_regenerator(struct imx_hdmi *hdmi) |
| { |
| unsigned int clk_n, clk_cts; |
| |
| clk_n = hdmi_compute_n(hdmi->sample_rate, hdmi->pixel_clk_rate, |
| hdmi->ratio); |
| clk_cts = hdmi_compute_cts(hdmi->sample_rate, hdmi->pixel_clk_rate, |
| hdmi->ratio); |
| |
| if (!clk_cts) { |
| dev_dbg(hdmi->dev, "%s: pixel clock not supported: %lu\n", |
| __func__, hdmi->pixel_clk_rate); |
| return; |
| } |
| |
| dev_dbg(hdmi->dev, "%s: samplerate=%d ratio=%d pixelclk=%lu N=%d cts=%d\n", |
| __func__, hdmi->sample_rate, hdmi->ratio, |
| hdmi->pixel_clk_rate, clk_n, clk_cts); |
| |
| hdmi_set_clock_regenerator_n(hdmi, clk_n); |
| hdmi_regenerate_cts(hdmi, clk_cts); |
| } |
| |
| static void hdmi_init_clk_regenerator(struct imx_hdmi *hdmi) |
| { |
| unsigned int clk_n, clk_cts; |
| |
| clk_n = hdmi_compute_n(hdmi->sample_rate, hdmi->pixel_clk_rate, |
| hdmi->ratio); |
| clk_cts = hdmi_compute_cts(hdmi->sample_rate, hdmi->pixel_clk_rate, |
| hdmi->ratio); |
| |
| if (!clk_cts) { |
| dev_dbg(hdmi->dev, "%s: pixel clock not supported: %lu\n", |
| __func__, hdmi->pixel_clk_rate); |
| return; |
| } |
| |
| dev_dbg(hdmi->dev, "%s: samplerate=%d ratio=%d pixelclk=%lu N=%d cts=%d\n", |
| __func__, hdmi->sample_rate, hdmi->ratio, |
| hdmi->pixel_clk_rate, clk_n, clk_cts); |
| |
| hdmi_set_clock_regenerator_n(hdmi, clk_n); |
| hdmi_regenerate_cts(hdmi, clk_cts); |
| } |
| |
| static void hdmi_clk_regenerator_update_pixel_clock(struct imx_hdmi *hdmi) |
| { |
| /* Get pixel clock from ipu */ |
| hdmi_get_pixel_clk(hdmi); |
| hdmi_set_clk_regenerator(hdmi); |
| } |
| |
| /* |
| * this submodule is responsible for the video data synchronization. |
| * for example, for RGB 4:4:4 input, the data map is defined as |
| * pin{47~40} <==> R[7:0] |
| * pin{31~24} <==> G[7:0] |
| * pin{15~8} <==> B[7:0] |
| */ |
| static void hdmi_video_sample(struct imx_hdmi *hdmi) |
| { |
| int color_format = 0; |
| u8 val; |
| |
| if (hdmi->hdmi_data.enc_in_format == RGB) { |
| if (hdmi->hdmi_data.enc_color_depth == 8) |
| color_format = 0x01; |
| else if (hdmi->hdmi_data.enc_color_depth == 10) |
| color_format = 0x03; |
| else if (hdmi->hdmi_data.enc_color_depth == 12) |
| color_format = 0x05; |
| else if (hdmi->hdmi_data.enc_color_depth == 16) |
| color_format = 0x07; |
| else |
| return; |
| } else if (hdmi->hdmi_data.enc_in_format == YCBCR444) { |
| if (hdmi->hdmi_data.enc_color_depth == 8) |
| color_format = 0x09; |
| else if (hdmi->hdmi_data.enc_color_depth == 10) |
| color_format = 0x0B; |
| else if (hdmi->hdmi_data.enc_color_depth == 12) |
| color_format = 0x0D; |
| else if (hdmi->hdmi_data.enc_color_depth == 16) |
| color_format = 0x0F; |
| else |
| return; |
| } else if (hdmi->hdmi_data.enc_in_format == YCBCR422_8BITS) { |
| if (hdmi->hdmi_data.enc_color_depth == 8) |
| color_format = 0x16; |
| else if (hdmi->hdmi_data.enc_color_depth == 10) |
| color_format = 0x14; |
| else if (hdmi->hdmi_data.enc_color_depth == 12) |
| color_format = 0x12; |
| else |
| return; |
| } |
| |
| val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE | |
| ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) & |
| HDMI_TX_INVID0_VIDEO_MAPPING_MASK); |
| hdmi_writeb(hdmi, val, HDMI_TX_INVID0); |
| |
| /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */ |
| val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE | |
| HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE | |
| HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE; |
| hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING); |
| hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0); |
| hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1); |
| hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0); |
| hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1); |
| hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0); |
| hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1); |
| } |
| |
| static int is_color_space_conversion(struct imx_hdmi *hdmi) |
| { |
| return (hdmi->hdmi_data.enc_in_format != |
| hdmi->hdmi_data.enc_out_format); |
| } |
| |
| static int is_color_space_decimation(struct imx_hdmi *hdmi) |
| { |
| return ((hdmi->hdmi_data.enc_out_format == YCBCR422_8BITS) && |
| (hdmi->hdmi_data.enc_in_format == RGB || |
| hdmi->hdmi_data.enc_in_format == YCBCR444)); |
| } |
| |
| static int is_color_space_interpolation(struct imx_hdmi *hdmi) |
| { |
| return ((hdmi->hdmi_data.enc_in_format == YCBCR422_8BITS) && |
| (hdmi->hdmi_data.enc_out_format == RGB || |
| hdmi->hdmi_data.enc_out_format == YCBCR444)); |
| } |
| |
| static void imx_hdmi_update_csc_coeffs(struct imx_hdmi *hdmi) |
| { |
| const u16 (*csc_coeff)[3][4] = &csc_coeff_default; |
| u32 csc_scale = 1; |
| u8 val; |
| |
| if (is_color_space_conversion(hdmi)) { |
| if (hdmi->hdmi_data.enc_out_format == RGB) { |
| if (hdmi->hdmi_data.colorimetry == ITU601) |
| csc_coeff = &csc_coeff_rgb_out_eitu601; |
| else |
| csc_coeff = &csc_coeff_rgb_out_eitu709; |
| } else if (hdmi->hdmi_data.enc_in_format == RGB) { |
| if (hdmi->hdmi_data.colorimetry == ITU601) |
| csc_coeff = &csc_coeff_rgb_in_eitu601; |
| else |
| csc_coeff = &csc_coeff_rgb_in_eitu709; |
| csc_scale = 0; |
| } |
| } |
| |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][0] & 0xff), HDMI_CSC_COEF_A1_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][0] >> 8), HDMI_CSC_COEF_A1_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][1] & 0xff), HDMI_CSC_COEF_A2_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][1] >> 8), HDMI_CSC_COEF_A2_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][2] & 0xff), HDMI_CSC_COEF_A3_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][2] >> 8), HDMI_CSC_COEF_A3_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][3] & 0xff), HDMI_CSC_COEF_A4_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[0][3] >> 8), HDMI_CSC_COEF_A4_MSB); |
| |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][0] & 0xff), HDMI_CSC_COEF_B1_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][0] >> 8), HDMI_CSC_COEF_B1_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][1] & 0xff), HDMI_CSC_COEF_B2_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][1] >> 8), HDMI_CSC_COEF_B2_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][2] & 0xff), HDMI_CSC_COEF_B3_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][2] >> 8), HDMI_CSC_COEF_B3_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][3] & 0xff), HDMI_CSC_COEF_B4_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[1][3] >> 8), HDMI_CSC_COEF_B4_MSB); |
| |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][0] & 0xff), HDMI_CSC_COEF_C1_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][0] >> 8), HDMI_CSC_COEF_C1_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][1] & 0xff), HDMI_CSC_COEF_C2_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][1] >> 8), HDMI_CSC_COEF_C2_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][2] & 0xff), HDMI_CSC_COEF_C3_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][2] >> 8), HDMI_CSC_COEF_C3_MSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][3] & 0xff), HDMI_CSC_COEF_C4_LSB); |
| hdmi_writeb(hdmi, ((*csc_coeff)[2][3] >> 8), HDMI_CSC_COEF_C4_MSB); |
| |
| val = hdmi_readb(hdmi, HDMI_CSC_SCALE); |
| val &= ~HDMI_CSC_SCALE_CSCSCALE_MASK; |
| val |= csc_scale & HDMI_CSC_SCALE_CSCSCALE_MASK; |
| hdmi_writeb(hdmi, val, HDMI_CSC_SCALE); |
| } |
| |
| static void hdmi_video_csc(struct imx_hdmi *hdmi) |
| { |
| int color_depth = 0; |
| int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE; |
| int decimation = 0; |
| u8 val; |
| |
| /* YCC422 interpolation to 444 mode */ |
| if (is_color_space_interpolation(hdmi)) |
| interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1; |
| else if (is_color_space_decimation(hdmi)) |
| decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3; |
| |
| if (hdmi->hdmi_data.enc_color_depth == 8) |
| color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP; |
| else if (hdmi->hdmi_data.enc_color_depth == 10) |
| color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP; |
| else if (hdmi->hdmi_data.enc_color_depth == 12) |
| color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP; |
| else if (hdmi->hdmi_data.enc_color_depth == 16) |
| color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP; |
| else |
| return; |
| |
| /* Configure the CSC registers */ |
| hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG); |
| val = hdmi_readb(hdmi, HDMI_CSC_SCALE); |
| val &= ~HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK; |
| val |= color_depth; |
| hdmi_writeb(hdmi, val, HDMI_CSC_SCALE); |
| |
| imx_hdmi_update_csc_coeffs(hdmi); |
| } |
| |
| /* |
| * HDMI video packetizer is used to packetize the data. |
| * for example, if input is YCC422 mode or repeater is used, |
| * data should be repacked this module can be bypassed. |
| */ |
| static void hdmi_video_packetize(struct imx_hdmi *hdmi) |
| { |
| unsigned int color_depth = 0; |
| unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit; |
| unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP; |
| struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data; |
| u8 val; |
| |
| if (hdmi_data->enc_out_format == RGB |
| || hdmi_data->enc_out_format == YCBCR444) { |
| if (!hdmi_data->enc_color_depth) |
| output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; |
| else if (hdmi_data->enc_color_depth == 8) { |
| color_depth = 4; |
| output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; |
| } else if (hdmi_data->enc_color_depth == 10) |
| color_depth = 5; |
| else if (hdmi_data->enc_color_depth == 12) |
| color_depth = 6; |
| else if (hdmi_data->enc_color_depth == 16) |
| color_depth = 7; |
| else |
| return; |
| } else if (hdmi_data->enc_out_format == YCBCR422_8BITS) { |
| if (!hdmi_data->enc_color_depth || |
| hdmi_data->enc_color_depth == 8) |
| remap_size = HDMI_VP_REMAP_YCC422_16bit; |
| else if (hdmi_data->enc_color_depth == 10) |
| remap_size = HDMI_VP_REMAP_YCC422_20bit; |
| else if (hdmi_data->enc_color_depth == 12) |
| remap_size = HDMI_VP_REMAP_YCC422_24bit; |
| else |
| return; |
| output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422; |
| } else |
| return; |
| |
| /* set the packetizer registers */ |
| val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) & |
| HDMI_VP_PR_CD_COLOR_DEPTH_MASK) | |
| ((hdmi_data->pix_repet_factor << |
| HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) & |
| HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK); |
| hdmi_writeb(hdmi, val, HDMI_VP_PR_CD); |
| |
| val = hdmi_readb(hdmi, HDMI_VP_STUFF); |
| val &= ~HDMI_VP_STUFF_PR_STUFFING_MASK; |
| val |= HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE; |
| hdmi_writeb(hdmi, val, HDMI_VP_STUFF); |
| |
| /* Data from pixel repeater block */ |
| if (hdmi_data->pix_repet_factor > 1) { |
| val = hdmi_readb(hdmi, HDMI_VP_CONF); |
| val &= ~(HDMI_VP_CONF_PR_EN_MASK | |
| HDMI_VP_CONF_BYPASS_SELECT_MASK); |
| val |= HDMI_VP_CONF_PR_EN_ENABLE | |
| HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER; |
| hdmi_writeb(hdmi, val, HDMI_VP_CONF); |
| } else { /* data from packetizer block */ |
| val = hdmi_readb(hdmi, HDMI_VP_CONF); |
| val &= ~(HDMI_VP_CONF_PR_EN_MASK | |
| HDMI_VP_CONF_BYPASS_SELECT_MASK); |
| val |= HDMI_VP_CONF_PR_EN_DISABLE | |
| HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER; |
| hdmi_writeb(hdmi, val, HDMI_VP_CONF); |
| } |
| |
| val = hdmi_readb(hdmi, HDMI_VP_STUFF); |
| val &= ~HDMI_VP_STUFF_IDEFAULT_PHASE_MASK; |
| val |= 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET; |
| hdmi_writeb(hdmi, val, HDMI_VP_STUFF); |
| |
| hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP); |
| |
| if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) { |
| val = hdmi_readb(hdmi, HDMI_VP_CONF); |
| val &= ~(HDMI_VP_CONF_BYPASS_EN_MASK | |
| HDMI_VP_CONF_PP_EN_ENMASK | |
| HDMI_VP_CONF_YCC422_EN_MASK); |
| val |= HDMI_VP_CONF_BYPASS_EN_DISABLE | |
| HDMI_VP_CONF_PP_EN_ENABLE | |
| HDMI_VP_CONF_YCC422_EN_DISABLE; |
| hdmi_writeb(hdmi, val, HDMI_VP_CONF); |
| } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) { |
| val = hdmi_readb(hdmi, HDMI_VP_CONF); |
| val &= ~(HDMI_VP_CONF_BYPASS_EN_MASK | |
| HDMI_VP_CONF_PP_EN_ENMASK | |
| HDMI_VP_CONF_YCC422_EN_MASK); |
| val |= HDMI_VP_CONF_BYPASS_EN_DISABLE | |
| HDMI_VP_CONF_PP_EN_DISABLE | |
| HDMI_VP_CONF_YCC422_EN_ENABLE; |
| hdmi_writeb(hdmi, val, HDMI_VP_CONF); |
| } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) { |
| val = hdmi_readb(hdmi, HDMI_VP_CONF); |
| val &= ~(HDMI_VP_CONF_BYPASS_EN_MASK | |
| HDMI_VP_CONF_PP_EN_ENMASK | |
| HDMI_VP_CONF_YCC422_EN_MASK); |
| val |= HDMI_VP_CONF_BYPASS_EN_ENABLE | |
| HDMI_VP_CONF_PP_EN_DISABLE | |
| HDMI_VP_CONF_YCC422_EN_DISABLE; |
| hdmi_writeb(hdmi, val, HDMI_VP_CONF); |
| } else { |
| return; |
| } |
| |
| val = hdmi_readb(hdmi, HDMI_VP_STUFF); |
| val &= ~(HDMI_VP_STUFF_PP_STUFFING_MASK | |
| HDMI_VP_STUFF_YCC422_STUFFING_MASK); |
| val |= HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE | |
| HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE; |
| hdmi_writeb(hdmi, val, HDMI_VP_STUFF); |
| |
| val = hdmi_readb(hdmi, HDMI_VP_CONF); |
| val &= ~HDMI_VP_CONF_OUTPUT_SELECTOR_MASK; |
| val |= output_select; |
| hdmi_writeb(hdmi, val, HDMI_VP_CONF); |
| } |
| |
| static inline void hdmi_phy_test_clear(struct imx_hdmi *hdmi, |
| unsigned char bit) |
| { |
| u8 val = hdmi_readb(hdmi, HDMI_PHY_TST0); |
| val &= ~HDMI_PHY_TST0_TSTCLR_MASK; |
| val |= (bit << HDMI_PHY_TST0_TSTCLR_OFFSET) & |
| HDMI_PHY_TST0_TSTCLR_MASK; |
| hdmi_writeb(hdmi, val, HDMI_PHY_TST0); |
| } |
| |
| static inline void hdmi_phy_test_enable(struct imx_hdmi *hdmi, |
| unsigned char bit) |
| { |
| u8 val = hdmi_readb(hdmi, HDMI_PHY_TST0); |
| val &= ~HDMI_PHY_TST0_TSTEN_MASK; |
| val |= (bit << HDMI_PHY_TST0_TSTEN_OFFSET) & |
| HDMI_PHY_TST0_TSTEN_MASK; |
| hdmi_writeb(hdmi, val, HDMI_PHY_TST0); |
| } |
| |
| static inline void hdmi_phy_test_clock(struct imx_hdmi *hdmi, |
| unsigned char bit) |
| { |
| u8 val = hdmi_readb(hdmi, HDMI_PHY_TST0); |
| val &= ~HDMI_PHY_TST0_TSTCLK_MASK; |
| val |= (bit << HDMI_PHY_TST0_TSTCLK_OFFSET) & |
| HDMI_PHY_TST0_TSTCLK_MASK; |
| hdmi_writeb(hdmi, val, HDMI_PHY_TST0); |
| } |
| |
| static inline void hdmi_phy_test_din(struct imx_hdmi *hdmi, |
| unsigned char bit) |
| { |
| hdmi_writeb(hdmi, bit, HDMI_PHY_TST1); |
| } |
| |
| static inline void hdmi_phy_test_dout(struct imx_hdmi *hdmi, |
| unsigned char bit) |
| { |
| hdmi_writeb(hdmi, bit, HDMI_PHY_TST2); |
| } |
| |
| static bool hdmi_phy_wait_i2c_done(struct imx_hdmi *hdmi, int msec) |
| { |
| unsigned char val = 0; |
| val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3; |
| while (!val) { |
| udelay(1000); |
| if (msec-- == 0) |
| return false; |
| val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3; |
| } |
| return true; |
| } |
| |
| static void __hdmi_phy_i2c_write(struct imx_hdmi *hdmi, unsigned short data, |
| unsigned char addr) |
| { |
| hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0); |
| hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR); |
| hdmi_writeb(hdmi, (unsigned char)(data >> 8), |
| HDMI_PHY_I2CM_DATAO_1_ADDR); |
| hdmi_writeb(hdmi, (unsigned char)(data >> 0), |
| HDMI_PHY_I2CM_DATAO_0_ADDR); |
| hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE, |
| HDMI_PHY_I2CM_OPERATION_ADDR); |
| hdmi_phy_wait_i2c_done(hdmi, 1000); |
| } |
| |
| static int hdmi_phy_i2c_write(struct imx_hdmi *hdmi, unsigned short data, |
| unsigned char addr) |
| { |
| __hdmi_phy_i2c_write(hdmi, data, addr); |
| return 0; |
| } |
| |
| static void imx_hdmi_phy_enable_power(struct imx_hdmi *hdmi, u8 enable) |
| { |
| hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, |
| HDMI_PHY_CONF0_PDZ_OFFSET, |
| HDMI_PHY_CONF0_PDZ_MASK); |
| } |
| |
| static void imx_hdmi_phy_enable_tmds(struct imx_hdmi *hdmi, u8 enable) |
| { |
| hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, |
| HDMI_PHY_CONF0_ENTMDS_OFFSET, |
| HDMI_PHY_CONF0_ENTMDS_MASK); |
| } |
| |
| static void imx_hdmi_phy_gen2_pddq(struct imx_hdmi *hdmi, u8 enable) |
| { |
| hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, |
| HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET, |
| HDMI_PHY_CONF0_GEN2_PDDQ_MASK); |
| } |
| |
| static void imx_hdmi_phy_gen2_txpwron(struct imx_hdmi *hdmi, u8 enable) |
| { |
| hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, |
| HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET, |
| HDMI_PHY_CONF0_GEN2_TXPWRON_MASK); |
| } |
| |
| static void imx_hdmi_phy_sel_data_en_pol(struct imx_hdmi *hdmi, u8 enable) |
| { |
| hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, |
| HDMI_PHY_CONF0_SELDATAENPOL_OFFSET, |
| HDMI_PHY_CONF0_SELDATAENPOL_MASK); |
| } |
| |
| static void imx_hdmi_phy_sel_interface_control(struct imx_hdmi *hdmi, u8 enable) |
| { |
| hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, |
| HDMI_PHY_CONF0_SELDIPIF_OFFSET, |
| HDMI_PHY_CONF0_SELDIPIF_MASK); |
| } |
| |
| static int hdmi_phy_configure(struct imx_hdmi *hdmi, unsigned char prep, |
| unsigned char res, int cscon) |
| { |
| u8 val, msec; |
| |
| /* color resolution 0 is 8 bit colour depth */ |
| if (!res) |
| res = 8; |
| |
| if (prep) |
| return -EINVAL; |
| else if (res != 8 && res != 12) |
| return -EINVAL; |
| |
| /* Enable csc path */ |
| if (cscon) |
| val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH; |
| else |
| val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS; |
| |
| hdmi_writeb(hdmi, val, HDMI_MC_FLOWCTRL); |
| |
| /* gen2 tx power off */ |
| imx_hdmi_phy_gen2_txpwron(hdmi, 0); |
| |
| /* gen2 pddq */ |
| imx_hdmi_phy_gen2_pddq(hdmi, 1); |
| |
| /* PHY reset */ |
| hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_DEASSERT, HDMI_MC_PHYRSTZ); |
| hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_ASSERT, HDMI_MC_PHYRSTZ); |
| |
| hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST); |
| |
| hdmi_phy_test_clear(hdmi, 1); |
| hdmi_writeb(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2, |
| HDMI_PHY_I2CM_SLAVE_ADDR); |
| hdmi_phy_test_clear(hdmi, 0); |
| |
| if (hdmi->hdmi_data.video_mode.mpixelclock <= 45250000) { |
| switch (res) { |
| case 8: |
| /* PLL/MPLL Cfg */ |
| hdmi_phy_i2c_write(hdmi, 0x01e0, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x0000, 0x15); /* GMPCTRL */ |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x21e1, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x0000, 0x15); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x41e2, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x0000, 0x15); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 92500000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x0140, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x0005, 0x15); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x2141, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x0005, 0x15); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x4142, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x0005, 0x15); |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 148500000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x00a0, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x000a, 0x15); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x20a1, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x000a, 0x15); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x40a2, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x000a, 0x15); |
| default: |
| return -EINVAL; |
| } |
| } else { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x00a0, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x000a, 0x15); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x2001, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x000f, 0x15); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x4002, 0x06); |
| hdmi_phy_i2c_write(hdmi, 0x000f, 0x15); |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| if (hdmi->hdmi_data.video_mode.mpixelclock <= 54000000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); /* CURRCTRL */ |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 58400000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 72000000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 74250000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x0b5c, 0x10); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 118800000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else if (hdmi->hdmi_data.video_mode.mpixelclock <= 216000000) { |
| switch (res) { |
| case 8: |
| hdmi_phy_i2c_write(hdmi, 0x06dc, 0x10); |
| break; |
| case 10: |
| hdmi_phy_i2c_write(hdmi, 0x0b5c, 0x10); |
| break; |
| case 12: |
| hdmi_phy_i2c_write(hdmi, 0x091c, 0x10); |
| break; |
| default: |
| return -EINVAL; |
| } |
| } else { |
| dev_err(hdmi->dev, |
| "Pixel clock %d - unsupported by HDMI\n", |
| hdmi->hdmi_data.video_mode.mpixelclock); |
| return -EINVAL; |
| } |
| |
| hdmi_phy_i2c_write(hdmi, 0x0000, 0x13); /* PLLPHBYCTRL */ |
| hdmi_phy_i2c_write(hdmi, 0x0006, 0x17); |
| /* RESISTANCE TERM 133Ohm Cfg */ |
| hdmi_phy_i2c_write(hdmi, 0x0005, 0x19); /* TXTERM */ |
| /* PREEMP Cgf 0.00 */ |
| hdmi_phy_i2c_write(hdmi, 0x800d, 0x09); /* CKSYMTXCTRL */ |
| /* TX/CK LVL 10 */ |
| hdmi_phy_i2c_write(hdmi, 0x01ad, 0x0E); /* VLEVCTRL */ |
| /* REMOVE CLK TERM */ |
| hdmi_phy_i2c_write(hdmi, 0x8000, 0x05); /* CKCALCTRL */ |
| |
| imx_hdmi_phy_enable_power(hdmi, 1); |
| |
| /* toggle TMDS enable */ |
| imx_hdmi_phy_enable_tmds(hdmi, 0); |
| imx_hdmi_phy_enable_tmds(hdmi, 1); |
| |
| /* gen2 tx power on */ |
| imx_hdmi_phy_gen2_txpwron(hdmi, 1); |
| imx_hdmi_phy_gen2_pddq(hdmi, 0); |
| |
| /*Wait for PHY PLL lock */ |
| msec = 5; |
| do { |
| val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK; |
| if (!val) |
| break; |
| |
| if (msec == 0) { |
| dev_err(hdmi->dev, "PHY PLL not locked\n"); |
| return -ETIMEDOUT; |
| } |
| |
| udelay(1000); |
| msec--; |
| } while (1); |
| |
| return 0; |
| } |
| |
| static int imx_hdmi_phy_init(struct imx_hdmi *hdmi) |
| { |
| int i, ret; |
| bool cscon = false; |
| |
| /*check csc whether needed activated in HDMI mode */ |
| cscon = (is_color_space_conversion(hdmi) && |
| !hdmi->hdmi_data.video_mode.mdvi); |
| |
| /* HDMI Phy spec says to do the phy initialization sequence twice */ |
| for (i = 0; i < 2; i++) { |
| imx_hdmi_phy_sel_data_en_pol(hdmi, 1); |
| imx_hdmi_phy_sel_interface_control(hdmi, 0); |
| imx_hdmi_phy_enable_tmds(hdmi, 0); |
| imx_hdmi_phy_enable_power(hdmi, 0); |
| |
| /* Enable CSC */ |
| ret = hdmi_phy_configure(hdmi, 0, 8, cscon); |
| if (ret) |
| return ret; |
| } |
| |
| hdmi->phy_enabled = true; |
| return 0; |
| } |
| |
| static void hdmi_tx_hdcp_config(struct imx_hdmi *hdmi) |
| { |
| u8 de, val; |
| |
| if (hdmi->hdmi_data.video_mode.mdataenablepolarity) |
| de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH; |
| else |
| de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW; |
| |
| /* disable rx detect */ |
| val = hdmi_readb(hdmi, HDMI_A_HDCPCFG0); |
| val &= HDMI_A_HDCPCFG0_RXDETECT_MASK; |
| val |= HDMI_A_HDCPCFG0_RXDETECT_DISABLE; |
| hdmi_writeb(hdmi, val, HDMI_A_HDCPCFG0); |
| |
| val = hdmi_readb(hdmi, HDMI_A_VIDPOLCFG); |
| val &= HDMI_A_VIDPOLCFG_DATAENPOL_MASK; |
| val |= de; |
| hdmi_writeb(hdmi, val, HDMI_A_VIDPOLCFG); |
| |
| val = hdmi_readb(hdmi, HDMI_A_HDCPCFG1); |
| val &= HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK; |
| val |= HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE; |
| hdmi_writeb(hdmi, val, HDMI_A_HDCPCFG1); |
| } |
| |
| static void hdmi_config_AVI(struct imx_hdmi *hdmi) |
| { |
| u8 val, pix_fmt, under_scan; |
| u8 act_ratio, coded_ratio, colorimetry, ext_colorimetry; |
| bool aspect_16_9; |
| |
| aspect_16_9 = false; /* FIXME */ |
| |
| /* AVI Data Byte 1 */ |
| if (hdmi->hdmi_data.enc_out_format == YCBCR444) |
| pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_YCBCR444; |
| else if (hdmi->hdmi_data.enc_out_format == YCBCR422_8BITS) |
| pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_YCBCR422; |
| else |
| pix_fmt = HDMI_FC_AVICONF0_PIX_FMT_RGB; |
| |
| under_scan = HDMI_FC_AVICONF0_SCAN_INFO_NODATA; |
| |
| /* |
| * Active format identification data is present in the AVI InfoFrame. |
| * Under scan info, no bar data |
| */ |
| val = pix_fmt | under_scan | |
| HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT | |
| HDMI_FC_AVICONF0_BAR_DATA_NO_DATA; |
| |
| hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0); |
| |
| /* AVI Data Byte 2 -Set the Aspect Ratio */ |
| if (aspect_16_9) { |
| act_ratio = HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_16_9; |
| coded_ratio = HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_16_9; |
| } else { |
| act_ratio = HDMI_FC_AVICONF1_ACTIVE_ASPECT_RATIO_4_3; |
| coded_ratio = HDMI_FC_AVICONF1_CODED_ASPECT_RATIO_4_3; |
| } |
| |
| /* Set up colorimetry */ |
| if (hdmi->hdmi_data.enc_out_format == XVYCC444) { |
| colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_EXTENDED_INFO; |
| if (hdmi->hdmi_data.colorimetry == ITU601) |
| ext_colorimetry = |
| HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601; |
| else /* hdmi->hdmi_data.colorimetry == ITU709 */ |
| ext_colorimetry = |
| HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC709; |
| } else if (hdmi->hdmi_data.enc_out_format != RGB) { |
| if (hdmi->hdmi_data.colorimetry == ITU601) |
| colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_SMPTE; |
| else /* hdmi->hdmi_data.colorimetry == ITU709 */ |
| colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_ITUR; |
| ext_colorimetry = HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601; |
| } else { /* Carries no data */ |
| colorimetry = HDMI_FC_AVICONF1_COLORIMETRY_NO_DATA; |
| ext_colorimetry = HDMI_FC_AVICONF2_EXT_COLORIMETRY_XVYCC601; |
| } |
| |
| val = colorimetry | coded_ratio | act_ratio; |
| hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1); |
| |
| /* AVI Data Byte 3 */ |
| val = HDMI_FC_AVICONF2_IT_CONTENT_NO_DATA | ext_colorimetry | |
| HDMI_FC_AVICONF2_RGB_QUANT_DEFAULT | |
| HDMI_FC_AVICONF2_SCALING_NONE; |
| hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2); |
| |
| /* AVI Data Byte 4 */ |
| hdmi_writeb(hdmi, hdmi->vic, HDMI_FC_AVIVID); |
| |
| /* AVI Data Byte 5- set up input and output pixel repetition */ |
| val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) << |
| HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) & |
| HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) | |
| ((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput << |
| HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) & |
| HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK); |
| hdmi_writeb(hdmi, val, HDMI_FC_PRCONF); |
| |
| /* IT Content and quantization range = don't care */ |
| val = HDMI_FC_AVICONF3_IT_CONTENT_TYPE_GRAPHICS | |
| HDMI_FC_AVICONF3_QUANT_RANGE_LIMITED; |
| hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3); |
| |
| /* AVI Data Bytes 6-13 */ |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVIETB0); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVIETB1); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVISBB0); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVISBB1); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVIELB0); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVIELB1); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVISRB0); |
| hdmi_writeb(hdmi, 0, HDMI_FC_AVISRB1); |
| } |
| |
| static void hdmi_av_composer(struct imx_hdmi *hdmi, |
| const struct drm_display_mode *mode) |
| { |
| u8 inv_val; |
| struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode; |
| int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len; |
| |
| vmode->mhsyncpolarity = !!(mode->flags & DRM_MODE_FLAG_PHSYNC); |
| vmode->mvsyncpolarity = !!(mode->flags & DRM_MODE_FLAG_PVSYNC); |
| vmode->minterlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); |
| vmode->mpixelclock = mode->clock * 1000; |
| |
| dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock); |
| |
| /* Set up HDMI_FC_INVIDCONF */ |
| inv_val = (hdmi->hdmi_data.hdcp_enable ? |
| HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE : |
| HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE); |
| |
| inv_val |= (vmode->mvsyncpolarity ? |
| HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH : |
| HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW); |
| |
| inv_val |= (vmode->mhsyncpolarity ? |
| HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH : |
| HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW); |
| |
| inv_val |= (vmode->mdataenablepolarity ? |
| HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH : |
| HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW); |
| |
| if (hdmi->vic == 39) |
| inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH; |
| else |
| inv_val |= (vmode->minterlaced ? |
| HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH : |
| HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW); |
| |
| inv_val |= (vmode->minterlaced ? |
| HDMI_FC_INVIDCONF_IN_I_P_INTERLACED : |
| HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE); |
| |
| inv_val |= (vmode->mdvi ? |
| HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE : |
| HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE); |
| |
| hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF); |
| |
| /* Set up horizontal active pixel width */ |
| hdmi_writeb(hdmi, mode->hdisplay >> 8, HDMI_FC_INHACTV1); |
| hdmi_writeb(hdmi, mode->hdisplay, HDMI_FC_INHACTV0); |
| |
| /* Set up vertical active lines */ |
| hdmi_writeb(hdmi, mode->vdisplay >> 8, HDMI_FC_INVACTV1); |
| hdmi_writeb(hdmi, mode->vdisplay, HDMI_FC_INVACTV0); |
| |
| /* Set up horizontal blanking pixel region width */ |
| hblank = mode->htotal - mode->hdisplay; |
| hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1); |
| hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0); |
| |
| /* Set up vertical blanking pixel region width */ |
| vblank = mode->vtotal - mode->vdisplay; |
| hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK); |
| |
| /* Set up HSYNC active edge delay width (in pixel clks) */ |
| h_de_hs = mode->hsync_start - mode->hdisplay; |
| hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1); |
| hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0); |
| |
| /* Set up VSYNC active edge delay (in lines) */ |
| v_de_vs = mode->vsync_start - mode->vdisplay; |
| hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY); |
| |
| /* Set up HSYNC active pulse width (in pixel clks) */ |
| hsync_len = mode->hsync_end - mode->hsync_start; |
| hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1); |
| hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0); |
| |
| /* Set up VSYNC active edge delay (in lines) */ |
| vsync_len = mode->vsync_end - mode->vsync_start; |
| hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH); |
| } |
| |
| static void imx_hdmi_phy_disable(struct imx_hdmi *hdmi) |
| { |
| if (!hdmi->phy_enabled) |
| return; |
| |
| imx_hdmi_phy_enable_tmds(hdmi, 0); |
| imx_hdmi_phy_enable_power(hdmi, 0); |
| |
| hdmi->phy_enabled = false; |
| } |
| |
| /* HDMI Initialization Step B.4 */ |
| static void imx_hdmi_enable_video_path(struct imx_hdmi *hdmi) |
| { |
| u8 clkdis; |
| |
| /* control period minimum duration */ |
| hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR); |
| hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR); |
| hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC); |
| |
| /* Set to fill TMDS data channels */ |
| hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM); |
| hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM); |
| hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM); |
| |
| /* Enable pixel clock and tmds data path */ |
| clkdis = 0x7F; |
| clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE; |
| hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); |
| |
| clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE; |
| hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); |
| |
| /* Enable csc path */ |
| if (is_color_space_conversion(hdmi)) { |
| clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE; |
| hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); |
| } |
| } |
| |
| static void hdmi_enable_audio_clk(struct imx_hdmi *hdmi) |
| { |
| u8 clkdis; |
| |
| clkdis = hdmi_readb(hdmi, HDMI_MC_CLKDIS); |
| clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE; |
| hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS); |
| } |
| |
| /* Workaround to clear the overflow condition */ |
| static void imx_hdmi_clear_overflow(struct imx_hdmi *hdmi) |
| { |
| int count; |
| u8 val; |
| |
| /* TMDS software reset */ |
| hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ); |
| |
| val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF); |
| if (hdmi->dev_type == IMX6DL_HDMI) { |
| hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF); |
| return; |
| } |
| |
| for (count = 0; count < 4; count++) |
| hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF); |
| } |
| |
| static void hdmi_enable_overflow_interrupts(struct imx_hdmi *hdmi) |
| { |
| hdmi_writeb(hdmi, 0, HDMI_FC_MASK2); |
| hdmi_writeb(hdmi, 0, HDMI_IH_MUTE_FC_STAT2); |
| } |
| |
| static void hdmi_disable_overflow_interrupts(struct imx_hdmi *hdmi) |
| { |
| hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK, |
| HDMI_IH_MUTE_FC_STAT2); |
| } |
| |
| static int imx_hdmi_setup(struct imx_hdmi *hdmi, struct drm_display_mode *mode) |
| { |
| int ret; |
| |
| hdmi_disable_overflow_interrupts(hdmi); |
| |
| hdmi->vic = drm_match_cea_mode(mode); |
| |
| if (!hdmi->vic) { |
| dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n"); |
| hdmi->hdmi_data.video_mode.mdvi = true; |
| } else { |
| dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic); |
| hdmi->hdmi_data.video_mode.mdvi = false; |
| } |
| |
| if ((hdmi->vic == 6) || (hdmi->vic == 7) || |
| (hdmi->vic == 21) || (hdmi->vic == 22) || |
| (hdmi->vic == 2) || (hdmi->vic == 3) || |
| (hdmi->vic == 17) || (hdmi->vic == 18)) |
| hdmi->hdmi_data.colorimetry = ITU601; |
| else |
| hdmi->hdmi_data.colorimetry = ITU709; |
| |
| if ((hdmi->vic == 10) || (hdmi->vic == 11) || |
| (hdmi->vic == 12) || (hdmi->vic == 13) || |
| (hdmi->vic == 14) || (hdmi->vic == 15) || |
| (hdmi->vic == 25) || (hdmi->vic == 26) || |
| (hdmi->vic == 27) || (hdmi->vic == 28) || |
| (hdmi->vic == 29) || (hdmi->vic == 30) || |
| (hdmi->vic == 35) || (hdmi->vic == 36) || |
| (hdmi->vic == 37) || (hdmi->vic == 38)) |
| hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 1; |
| else |
| hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0; |
| |
| hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0; |
| |
| /* TODO: Get input format from IPU (via FB driver interface) */ |
| hdmi->hdmi_data.enc_in_format = RGB; |
| |
| hdmi->hdmi_data.enc_out_format = RGB; |
| |
| hdmi->hdmi_data.enc_color_depth = 8; |
| hdmi->hdmi_data.pix_repet_factor = 0; |
| hdmi->hdmi_data.hdcp_enable = 0; |
| hdmi->hdmi_data.video_mode.mdataenablepolarity = true; |
| |
| /* HDMI Initialization Step B.1 */ |
| hdmi_av_composer(hdmi, mode); |
| |
| /* HDMI Initializateion Step B.2 */ |
| ret = imx_hdmi_phy_init(hdmi); |
| if (ret) |
| return ret; |
| |
| /* HDMI Initialization Step B.3 */ |
| imx_hdmi_enable_video_path(hdmi); |
| |
| /* not for DVI mode */ |
| if (hdmi->hdmi_data.video_mode.mdvi) |
| dev_dbg(hdmi->dev, "%s DVI mode\n", __func__); |
| else { |
| dev_dbg(hdmi->dev, "%s CEA mode\n", __func__); |
| |
| /* HDMI Initialization Step E - Configure audio */ |
| hdmi_clk_regenerator_update_pixel_clock(hdmi); |
| hdmi_enable_audio_clk(hdmi); |
| |
| /* HDMI Initialization Step F - Configure AVI InfoFrame */ |
| hdmi_config_AVI(hdmi); |
| } |
| |
| hdmi_video_packetize(hdmi); |
| hdmi_video_csc(hdmi); |
| hdmi_video_sample(hdmi); |
| hdmi_tx_hdcp_config(hdmi); |
| |
| imx_hdmi_clear_overflow(hdmi); |
| if (hdmi->cable_plugin && !hdmi->hdmi_data.video_mode.mdvi) |
| hdmi_enable_overflow_interrupts(hdmi); |
| |
| return 0; |
| } |
| |
| /* Wait until we are registered to enable interrupts */ |
| static int imx_hdmi_fb_registered(struct imx_hdmi *hdmi) |
| { |
| hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL, |
| HDMI_PHY_I2CM_INT_ADDR); |
| |
| hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL | |
| HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL, |
| HDMI_PHY_I2CM_CTLINT_ADDR); |
| |
| /* enable cable hot plug irq */ |
| hdmi_writeb(hdmi, (u8)~HDMI_PHY_HPD, HDMI_PHY_MASK0); |
| |
| /* Clear Hotplug interrupts */ |
| hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0); |
| |
| /* Unmute interrupts */ |
| hdmi_writeb(hdmi, ~HDMI_IH_PHY_STAT0_HPD, HDMI_IH_MUTE_PHY_STAT0); |
| |
| return 0; |
| } |
| |
| static void initialize_hdmi_ih_mutes(struct imx_hdmi *hdmi) |
| { |
| u8 ih_mute; |
| |
| /* |
| * Boot up defaults are: |
| * HDMI_IH_MUTE = 0x03 (disabled) |
| * HDMI_IH_MUTE_* = 0x00 (enabled) |
| * |
| * Disable top level interrupt bits in HDMI block |
| */ |
| ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) | |
| HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | |
| HDMI_IH_MUTE_MUTE_ALL_INTERRUPT; |
| |
| hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); |
| |
| /* by default mask all interrupts */ |
| hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK); |
| hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0); |
| hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1); |
| hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2); |
| hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0); |
| hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR); |
| hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR); |
| hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT); |
| hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT); |
| hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK); |
| hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK); |
| hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK); |
| hdmi_writeb(hdmi, 0xff, HDMI_CEC_MASK); |
| hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT); |
| hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT); |
| |
| /* Disable interrupts in the IH_MUTE_* registers */ |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0); |
| hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0); |
| |
| /* Enable top level interrupt bits in HDMI block */ |
| ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | |
| HDMI_IH_MUTE_MUTE_ALL_INTERRUPT); |
| hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); |
| } |
| |
| static void imx_hdmi_poweron(struct imx_hdmi *hdmi) |
| { |
| imx_hdmi_setup(hdmi, &hdmi->previous_mode); |
| } |
| |
| static void imx_hdmi_poweroff(struct imx_hdmi *hdmi) |
| { |
| imx_hdmi_phy_disable(hdmi); |
| } |
| |
| static enum drm_connector_status imx_hdmi_connector_detect(struct drm_connector |
| *connector, bool force) |
| { |
| /* FIXME */ |
| return connector_status_connected; |
| } |
| |
| static void imx_hdmi_connector_destroy(struct drm_connector *connector) |
| { |
| } |
| |
| static int imx_hdmi_connector_get_modes(struct drm_connector *connector) |
| { |
| struct imx_hdmi *hdmi = container_of(connector, struct imx_hdmi, |
| connector); |
| struct edid *edid; |
| int ret; |
| |
| if (!hdmi->ddc) |
| return 0; |
| |
| edid = drm_get_edid(connector, hdmi->ddc); |
| if (edid) { |
| dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n", |
| edid->width_cm, edid->height_cm); |
| |
| drm_mode_connector_update_edid_property(connector, edid); |
| ret = drm_add_edid_modes(connector, edid); |
| kfree(edid); |
| } else { |
| dev_dbg(hdmi->dev, "failed to get edid\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int imx_hdmi_connector_mode_valid(struct drm_connector *connector, |
| struct drm_display_mode *mode) |
| { |
| |
| return MODE_OK; |
| } |
| |
| static struct drm_encoder *imx_hdmi_connector_best_encoder(struct drm_connector |
| *connector) |
| { |
| struct imx_hdmi *hdmi = container_of(connector, struct imx_hdmi, |
| connector); |
| |
| return &hdmi->encoder; |
| } |
| |
| static void imx_hdmi_encoder_mode_set(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); |
| |
| imx_hdmi_setup(hdmi, mode); |
| |
| /* Store the display mode for plugin/DKMS poweron events */ |
| memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode)); |
| } |
| |
| static bool imx_hdmi_encoder_mode_fixup(struct drm_encoder *encoder, |
| const struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| return true; |
| } |
| |
| static void imx_hdmi_encoder_disable(struct drm_encoder *encoder) |
| { |
| } |
| |
| static void imx_hdmi_encoder_dpms(struct drm_encoder *encoder, int mode) |
| { |
| struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); |
| |
| if (mode) |
| imx_hdmi_poweroff(hdmi); |
| else |
| imx_hdmi_poweron(hdmi); |
| } |
| |
| static void imx_hdmi_encoder_prepare(struct drm_encoder *encoder) |
| { |
| struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); |
| |
| imx_hdmi_poweroff(hdmi); |
| imx_drm_crtc_panel_format(encoder->crtc, DRM_MODE_ENCODER_NONE, |
| V4L2_PIX_FMT_RGB24); |
| } |
| |
| static void imx_hdmi_encoder_commit(struct drm_encoder *encoder) |
| { |
| struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); |
| int mux = imx_drm_encoder_get_mux_id(hdmi->imx_drm_encoder, |
| encoder->crtc); |
| |
| imx_hdmi_set_ipu_di_mux(hdmi, mux); |
| |
| imx_hdmi_poweron(hdmi); |
| } |
| |
| static void imx_hdmi_encoder_destroy(struct drm_encoder *encoder) |
| { |
| return; |
| } |
| |
| static struct drm_encoder_funcs imx_hdmi_encoder_funcs = { |
| .destroy = imx_hdmi_encoder_destroy, |
| }; |
| |
| static struct drm_encoder_helper_funcs imx_hdmi_encoder_helper_funcs = { |
| .dpms = imx_hdmi_encoder_dpms, |
| .prepare = imx_hdmi_encoder_prepare, |
| .commit = imx_hdmi_encoder_commit, |
| .mode_set = imx_hdmi_encoder_mode_set, |
| .mode_fixup = imx_hdmi_encoder_mode_fixup, |
| .disable = imx_hdmi_encoder_disable, |
| }; |
| |
| static struct drm_connector_funcs imx_hdmi_connector_funcs = { |
| .dpms = drm_helper_connector_dpms, |
| .fill_modes = drm_helper_probe_single_connector_modes, |
| .detect = imx_hdmi_connector_detect, |
| .destroy = imx_hdmi_connector_destroy, |
| }; |
| |
| static struct drm_connector_helper_funcs imx_hdmi_connector_helper_funcs = { |
| .get_modes = imx_hdmi_connector_get_modes, |
| .mode_valid = imx_hdmi_connector_mode_valid, |
| .best_encoder = imx_hdmi_connector_best_encoder, |
| }; |
| |
| static irqreturn_t imx_hdmi_irq(int irq, void *dev_id) |
| { |
| struct imx_hdmi *hdmi = dev_id; |
| u8 intr_stat; |
| u8 phy_int_pol; |
| u8 val; |
| |
| intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); |
| |
| phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0); |
| |
| if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { |
| if (phy_int_pol & HDMI_PHY_HPD) { |
| dev_dbg(hdmi->dev, "EVENT=plugin\n"); |
| |
| val = hdmi_readb(hdmi, HDMI_PHY_POL0); |
| val &= ~HDMI_PHY_HPD; |
| hdmi_writeb(hdmi, val, HDMI_PHY_POL0); |
| |
| imx_hdmi_poweron(hdmi); |
| } else { |
| dev_dbg(hdmi->dev, "EVENT=plugout\n"); |
| |
| val = hdmi_readb(hdmi, HDMI_PHY_POL0); |
| val |= HDMI_PHY_HPD; |
| hdmi_writeb(hdmi, val, HDMI_PHY_POL0); |
| |
| imx_hdmi_poweroff(hdmi); |
| } |
| } |
| |
| hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int imx_hdmi_register(struct imx_hdmi *hdmi) |
| { |
| int ret; |
| |
| hdmi->connector.funcs = &imx_hdmi_connector_funcs; |
| hdmi->encoder.funcs = &imx_hdmi_encoder_funcs; |
| |
| hdmi->encoder.encoder_type = DRM_MODE_ENCODER_TMDS; |
| hdmi->connector.connector_type = DRM_MODE_CONNECTOR_HDMIA; |
| |
| drm_encoder_helper_add(&hdmi->encoder, &imx_hdmi_encoder_helper_funcs); |
| ret = imx_drm_add_encoder(&hdmi->encoder, &hdmi->imx_drm_encoder, |
| THIS_MODULE); |
| if (ret) { |
| dev_err(hdmi->dev, "adding encoder failed: %d\n", ret); |
| return ret; |
| } |
| |
| drm_connector_helper_add(&hdmi->connector, |
| &imx_hdmi_connector_helper_funcs); |
| |
| ret = imx_drm_add_connector(&hdmi->connector, |
| &hdmi->imx_drm_connector, THIS_MODULE); |
| if (ret) { |
| imx_drm_remove_encoder(hdmi->imx_drm_encoder); |
| dev_err(hdmi->dev, "adding connector failed: %d\n", ret); |
| return ret; |
| } |
| |
| hdmi->connector.encoder = &hdmi->encoder; |
| |
| drm_mode_connector_attach_encoder(&hdmi->connector, &hdmi->encoder); |
| |
| return 0; |
| } |
| |
| static struct platform_device_id imx_hdmi_devtype[] = { |
| { |
| .name = "imx6q-hdmi", |
| .driver_data = IMX6Q_HDMI, |
| }, { |
| .name = "imx6dl-hdmi", |
| .driver_data = IMX6DL_HDMI, |
| }, { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(platform, imx_hdmi_devtype); |
| |
| static const struct of_device_id imx_hdmi_dt_ids[] = { |
| { .compatible = "fsl,imx6q-hdmi", .data = &imx_hdmi_devtype[IMX6Q_HDMI], }, |
| { .compatible = "fsl,imx6dl-hdmi", .data = &imx_hdmi_devtype[IMX6DL_HDMI], }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_hdmi_dt_ids); |
| |
| static int imx_hdmi_platform_probe(struct platform_device *pdev) |
| { |
| const struct of_device_id *of_id = |
| of_match_device(imx_hdmi_dt_ids, &pdev->dev); |
| struct device_node *np = pdev->dev.of_node; |
| struct device_node *ddc_node; |
| struct imx_hdmi *hdmi; |
| struct resource *iores; |
| int ret, irq; |
| |
| hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); |
| if (!hdmi) |
| return -ENOMEM; |
| |
| hdmi->dev = &pdev->dev; |
| |
| if (of_id) { |
| const struct platform_device_id *device_id = of_id->data; |
| hdmi->dev_type = device_id->driver_data; |
| } |
| |
| ddc_node = of_parse_phandle(np, "ddc", 0); |
| if (ddc_node) { |
| hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node); |
| if (!hdmi->ddc) |
| dev_dbg(hdmi->dev, "failed to read ddc node\n"); |
| |
| of_node_put(ddc_node); |
| } else { |
| dev_dbg(hdmi->dev, "no ddc property found\n"); |
| } |
| |
| irq = platform_get_irq(pdev, 0); |
| if (irq < 0) |
| return -EINVAL; |
| |
| ret = devm_request_irq(&pdev->dev, irq, imx_hdmi_irq, 0, |
| dev_name(&pdev->dev), hdmi); |
| if (ret) |
| return ret; |
| |
| iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| hdmi->regs = devm_ioremap_resource(&pdev->dev, iores); |
| if (IS_ERR(hdmi->regs)) |
| return PTR_ERR(hdmi->regs); |
| |
| hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr"); |
| if (IS_ERR(hdmi->regmap)) |
| return PTR_ERR(hdmi->regmap); |
| |
| hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr"); |
| if (IS_ERR(hdmi->isfr_clk)) { |
| ret = PTR_ERR(hdmi->isfr_clk); |
| dev_err(hdmi->dev, |
| "Unable to get HDMI isfr clk: %d\n", ret); |
| return ret; |
| } |
| |
| ret = clk_prepare_enable(hdmi->isfr_clk); |
| if (ret) { |
| dev_err(hdmi->dev, |
| "Cannot enable HDMI isfr clock: %d\n", ret); |
| return ret; |
| } |
| |
| hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb"); |
| if (IS_ERR(hdmi->iahb_clk)) { |
| ret = PTR_ERR(hdmi->iahb_clk); |
| dev_err(hdmi->dev, |
| "Unable to get HDMI iahb clk: %d\n", ret); |
| goto err_isfr; |
| } |
| |
| ret = clk_prepare_enable(hdmi->iahb_clk); |
| if (ret) { |
| dev_err(hdmi->dev, |
| "Cannot enable HDMI iahb clock: %d\n", ret); |
| goto err_isfr; |
| } |
| |
| /* Product and revision IDs */ |
| dev_info(&pdev->dev, |
| "Detected HDMI controller 0x%x:0x%x:0x%x:0x%x\n", |
| hdmi_readb(hdmi, HDMI_DESIGN_ID), |
| hdmi_readb(hdmi, HDMI_REVISION_ID), |
| hdmi_readb(hdmi, HDMI_PRODUCT_ID0), |
| hdmi_readb(hdmi, HDMI_PRODUCT_ID1)); |
| |
| initialize_hdmi_ih_mutes(hdmi); |
| |
| /* |
| * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator |
| * N and cts values before enabling phy |
| */ |
| hdmi_init_clk_regenerator(hdmi); |
| |
| /* |
| * Configure registers related to HDMI interrupt |
| * generation before registering IRQ. |
| */ |
| hdmi_writeb(hdmi, HDMI_PHY_HPD, HDMI_PHY_POL0); |
| |
| /* Clear Hotplug interrupts */ |
| hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0); |
| |
| ret = imx_hdmi_fb_registered(hdmi); |
| if (ret) |
| goto err_iahb; |
| |
| ret = imx_hdmi_register(hdmi); |
| if (ret) |
| goto err_iahb; |
| |
| imx_drm_encoder_add_possible_crtcs(hdmi->imx_drm_encoder, np); |
| |
| platform_set_drvdata(pdev, hdmi); |
| |
| return 0; |
| |
| err_iahb: |
| clk_disable_unprepare(hdmi->iahb_clk); |
| err_isfr: |
| clk_disable_unprepare(hdmi->isfr_clk); |
| |
| return ret; |
| } |
| |
| static int imx_hdmi_platform_remove(struct platform_device *pdev) |
| { |
| struct imx_hdmi *hdmi = platform_get_drvdata(pdev); |
| struct drm_connector *connector = &hdmi->connector; |
| struct drm_encoder *encoder = &hdmi->encoder; |
| |
| drm_mode_connector_detach_encoder(connector, encoder); |
| imx_drm_remove_connector(hdmi->imx_drm_connector); |
| imx_drm_remove_encoder(hdmi->imx_drm_encoder); |
| |
| clk_disable_unprepare(hdmi->iahb_clk); |
| clk_disable_unprepare(hdmi->isfr_clk); |
| i2c_put_adapter(hdmi->ddc); |
| |
| return 0; |
| } |
| |
| static struct platform_driver imx_hdmi_driver = { |
| .probe = imx_hdmi_platform_probe, |
| .remove = imx_hdmi_platform_remove, |
| .driver = { |
| .name = "imx-hdmi", |
| .owner = THIS_MODULE, |
| .of_match_table = imx_hdmi_dt_ids, |
| }, |
| }; |
| |
| module_platform_driver(imx_hdmi_driver); |
| |
| MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); |
| MODULE_DESCRIPTION("i.MX6 HDMI transmitter driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:imx-hdmi"); |
