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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __RADEONFB_H__
#define __RADEONFB_H__
#define DEBUG 1
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/fb.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <asm/io.h>
#if defined(CONFIG_PPC) || defined(CONFIG_SPARC)
#include <asm/prom.h>
#include <video/radeon.h>
* Most of the definitions here are adapted right from XFree86 *
* Chip families. Must fit in the low 16 bits of a long word
enum radeon_family {
CHIP_FAMILY_RS100, /* U1 (IGP320M) or A3 (IGP320)*/
CHIP_FAMILY_RS200, /* U2 (IGP330M/340M/350M) or A4 (IGP330/340/345/350),
RS250 (IGP 7000) */
CHIP_FAMILY_RS300, /* Radeon 9000 IGP */
CHIP_FAMILY_RV380, /* RV370/RV380/M22/M24 */
CHIP_FAMILY_R420, /* R420/R423/M18 */
#define IS_RV100_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_RV100) || \
((rinfo)->family == CHIP_FAMILY_RV200) || \
((rinfo)->family == CHIP_FAMILY_RS100) || \
((rinfo)->family == CHIP_FAMILY_RS200) || \
((rinfo)->family == CHIP_FAMILY_RV250) || \
((rinfo)->family == CHIP_FAMILY_RV280) || \
((rinfo)->family == CHIP_FAMILY_RS300))
#define IS_R300_VARIANT(rinfo) (((rinfo)->family == CHIP_FAMILY_R300) || \
((rinfo)->family == CHIP_FAMILY_RV350) || \
((rinfo)->family == CHIP_FAMILY_R350) || \
((rinfo)->family == CHIP_FAMILY_RV380) || \
((rinfo)->family == CHIP_FAMILY_R420) || \
((rinfo)->family == CHIP_FAMILY_RC410) || \
((rinfo)->family == CHIP_FAMILY_RS480))
* Chip flags
enum radeon_chip_flags {
CHIP_FAMILY_MASK = 0x0000ffffUL,
CHIP_FLAGS_MASK = 0xffff0000UL,
CHIP_IS_MOBILITY = 0x00010000UL,
CHIP_IS_IGP = 0x00020000UL,
CHIP_HAS_CRTC2 = 0x00040000UL,
* Errata workarounds
enum radeon_errata {
CHIP_ERRATA_R300_CG = 0x00000001,
* Monitor types
enum radeon_montype {
MT_NONE = 0,
MT_CRT, /* CRT */
MT_LCD, /* LCD */
MT_DFP, /* DVI */
MT_CTV, /* composite TV */
MT_STV /* S-Video out */
* DDC i2c ports
enum ddc_type {
* Connector types
enum conn_type {
* PLL infos
struct pll_info {
int ppll_max;
int ppll_min;
int sclk, mclk;
int ref_div;
int ref_clk;
* This structure contains the various registers manipulated by this
* driver for setting or restoring a mode. It's mostly copied from
* XFree's RADEONSaveRec structure. A few chip settings might still be
* tweaked without beeing reflected or saved in these registers though
struct radeon_regs {
/* Common registers */
u32 ovr_clr;
u32 ovr_wid_left_right;
u32 ovr_wid_top_bottom;
u32 ov0_scale_cntl;
u32 mpp_tb_config;
u32 mpp_gp_config;
u32 subpic_cntl;
u32 viph_control;
u32 i2c_cntl_1;
u32 gen_int_cntl;
u32 cap0_trig_cntl;
u32 cap1_trig_cntl;
u32 bus_cntl;
u32 surface_cntl;
u32 bios_5_scratch;
/* Other registers to save for VT switches or driver load/unload */
u32 dp_datatype;
u32 rbbm_soft_reset;
u32 clock_cntl_index;
u32 amcgpio_en_reg;
u32 amcgpio_mask;
/* Surface/tiling registers */
u32 surf_lower_bound[8];
u32 surf_upper_bound[8];
u32 surf_info[8];
/* CRTC registers */
u32 crtc_gen_cntl;
u32 crtc_ext_cntl;
u32 dac_cntl;
u32 crtc_h_total_disp;
u32 crtc_h_sync_strt_wid;
u32 crtc_v_total_disp;
u32 crtc_v_sync_strt_wid;
u32 crtc_offset;
u32 crtc_offset_cntl;
u32 crtc_pitch;
u32 disp_merge_cntl;
u32 grph_buffer_cntl;
u32 crtc_more_cntl;
/* CRTC2 registers */
u32 crtc2_gen_cntl;
u32 dac2_cntl;
u32 disp_output_cntl;
u32 disp_hw_debug;
u32 disp2_merge_cntl;
u32 grph2_buffer_cntl;
u32 crtc2_h_total_disp;
u32 crtc2_h_sync_strt_wid;
u32 crtc2_v_total_disp;
u32 crtc2_v_sync_strt_wid;
u32 crtc2_offset;
u32 crtc2_offset_cntl;
u32 crtc2_pitch;
/* Flat panel regs */
u32 fp_crtc_h_total_disp;
u32 fp_crtc_v_total_disp;
u32 fp_gen_cntl;
u32 fp2_gen_cntl;
u32 fp_h_sync_strt_wid;
u32 fp2_h_sync_strt_wid;
u32 fp_horz_stretch;
u32 fp_panel_cntl;
u32 fp_v_sync_strt_wid;
u32 fp2_v_sync_strt_wid;
u32 fp_vert_stretch;
u32 lvds_gen_cntl;
u32 lvds_pll_cntl;
u32 tmds_crc;
u32 tmds_transmitter_cntl;
/* Computed values for PLL */
u32 dot_clock_freq;
int feedback_div;
int post_div;
/* PLL registers */
u32 ppll_div_3;
u32 ppll_ref_div;
u32 vclk_ecp_cntl;
u32 clk_cntl_index;
/* Computed values for PLL2 */
u32 dot_clock_freq_2;
int feedback_div_2;
int post_div_2;
/* PLL2 registers */
u32 p2pll_ref_div;
u32 p2pll_div_0;
u32 htotal_cntl2;
/* Palette */
int palette_valid;
struct panel_info {
int xres, yres;
int valid;
int clock;
int hOver_plus, hSync_width, hblank;
int vOver_plus, vSync_width, vblank;
int hAct_high, vAct_high, interlaced;
int pwr_delay;
int use_bios_dividers;
int ref_divider;
int post_divider;
int fbk_divider;
struct radeonfb_info;
struct radeon_i2c_chan {
struct radeonfb_info *rinfo;
u32 ddc_reg;
struct i2c_adapter adapter;
struct i2c_algo_bit_data algo;
enum radeon_pm_mode {
radeon_pm_none = 0, /* Nothing supported */
radeon_pm_d2 = 0x00000001, /* Can do D2 state */
radeon_pm_off = 0x00000002, /* Can resume from D3 cold */
typedef void (*reinit_function_ptr)(struct radeonfb_info *rinfo);
struct radeonfb_info {
struct fb_info *info;
struct radeon_regs state;
struct radeon_regs init_state;
char name[50];
unsigned long mmio_base_phys;
unsigned long fb_base_phys;
void __iomem *mmio_base;
void __iomem *fb_base;
unsigned long fb_local_base;
struct pci_dev *pdev;
#if defined(CONFIG_PPC) || defined(CONFIG_SPARC)
struct device_node *of_node;
void __iomem *bios_seg;
int fp_bios_start;
u32 pseudo_palette[16];
struct { u8 red, green, blue, pad; }
int chipset;
u8 family;
u8 rev;
unsigned int errata;
unsigned long video_ram;
unsigned long mapped_vram;
int vram_width;
int vram_ddr;
int pitch, bpp, depth;
int has_CRTC2;
int is_mobility;
int is_IGP;
int reversed_DAC;
int reversed_TMDS;
struct panel_info panel_info;
int mon1_type;
u8 *mon1_EDID;
struct fb_videomode *mon1_modedb;
int mon1_dbsize;
int mon2_type;
u8 *mon2_EDID;
u32 dp_gui_master_cntl;
struct pll_info pll;
int wc_cookie;
u32 save_regs[100];
int asleep;
int lock_blank;
int dynclk;
int no_schedule;
enum radeon_pm_mode pm_mode;
reinit_function_ptr reinit_func;
/* Lock on register access */
spinlock_t reg_lock;
/* Timer used for delayed LVDS operations */
struct timer_list lvds_timer;
u32 pending_lvds_gen_cntl;
struct radeon_i2c_chan i2c[4];
#define PRIMARY_MONITOR(rinfo) (rinfo->mon1_type)
* IO macros
void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms);
#define INREG8(addr) readb((rinfo->mmio_base)+addr)
#define OUTREG8(addr,val) writeb(val, (rinfo->mmio_base)+addr)
#define INREG16(addr) readw((rinfo->mmio_base)+addr)
#define OUTREG16(addr,val) writew(val, (rinfo->mmio_base)+addr)
#define INREG(addr) readl((rinfo->mmio_base)+addr)
#define OUTREG(addr,val) writel(val, (rinfo->mmio_base)+addr)
void _OUTREGP(struct radeonfb_info *rinfo, u32 addr, u32 val, u32 mask);
#define OUTREGP(addr,val,mask) _OUTREGP(rinfo, addr, val,mask)
* Note about PLL register accesses:
* I have removed the spinlock on them on purpose. The driver now
* expects that it will only manipulate the PLL registers in normal
* task environment, where radeon_msleep() will be called, protected
* by a semaphore (currently the console semaphore) so that no conflict
* will happen on the PLL register index.
* With the latest changes to the VT layer, this is guaranteed for all
* calls except the actual drawing/blits which aren't supposed to use
* the PLL registers anyway
* This is very important for the workarounds to work properly. The only
* possible exception to this rule is the call to unblank(), which may
* be done at irq time if an oops is in progress.
void radeon_pll_errata_after_index_slow(struct radeonfb_info *rinfo);
static inline void radeon_pll_errata_after_index(struct radeonfb_info *rinfo)
if (rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS)
void radeon_pll_errata_after_data_slow(struct radeonfb_info *rinfo);
static inline void radeon_pll_errata_after_data(struct radeonfb_info *rinfo)
if (rinfo->errata & (CHIP_ERRATA_PLL_DELAY|CHIP_ERRATA_R300_CG))
u32 __INPLL(struct radeonfb_info *rinfo, u32 addr);
void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index, u32 val);
void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
u32 val, u32 mask);
#define INPLL(addr) __INPLL(rinfo, addr)
#define OUTPLL(index, val) __OUTPLL(rinfo, index, val)
#define OUTPLLP(index, val, mask) __OUTPLLP(rinfo, index, val, mask)
#define BIOS_IN8(v) (readb(rinfo->bios_seg + (v)))
#define BIOS_IN16(v) (readb(rinfo->bios_seg + (v)) | \
(readb(rinfo->bios_seg + (v) + 1) << 8))
#define BIOS_IN32(v) (readb(rinfo->bios_seg + (v)) | \
(readb(rinfo->bios_seg + (v) + 1) << 8) | \
(readb(rinfo->bios_seg + (v) + 2) << 16) | \
(readb(rinfo->bios_seg + (v) + 3) << 24))
* Inline utilities
static inline int round_div(int num, int den)
return (num + (den / 2)) / den;
static inline int var_to_depth(const struct fb_var_screeninfo *var)
if (var->bits_per_pixel != 16)
return var->bits_per_pixel;
return (var->green.length == 5) ? 15 : 16;
static inline u32 radeon_get_dstbpp(u16 depth)
switch (depth) {
case 8:
return DST_8BPP;
case 15:
return DST_15BPP;
case 16:
return DST_16BPP;
case 32:
return DST_32BPP;
return 0;
* 2D Engine helper routines
void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries);
void radeon_engine_flush(struct radeonfb_info *rinfo);
void _radeon_engine_idle(struct radeonfb_info *rinfo);
#define radeon_engine_idle() _radeon_engine_idle(rinfo)
#define radeon_fifo_wait(entries) _radeon_fifo_wait(rinfo,entries)
#define radeon_msleep(ms) _radeon_msleep(rinfo,ms)
/* I2C Functions */
extern void radeon_create_i2c_busses(struct radeonfb_info *rinfo);
extern void radeon_delete_i2c_busses(struct radeonfb_info *rinfo);
extern int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, u8 **out_edid);
/* PM Functions */
extern const struct dev_pm_ops radeonfb_pci_pm_ops;
extern void radeonfb_pm_init(struct radeonfb_info *rinfo, int dynclk, int ignore_devlist, int force_sleep);
extern void radeonfb_pm_exit(struct radeonfb_info *rinfo);
/* Monitor probe functions */
extern void radeon_probe_screens(struct radeonfb_info *rinfo,
const char *monitor_layout, int ignore_edid);
extern void radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_option);
extern int radeon_match_mode(struct radeonfb_info *rinfo,
struct fb_var_screeninfo *dest,
const struct fb_var_screeninfo *src);
/* Accel functions */
extern void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region);
extern void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
extern void radeonfb_imageblit(struct fb_info *p, const struct fb_image *image);
extern int radeonfb_sync(struct fb_info *info);
extern void radeonfb_engine_init (struct radeonfb_info *rinfo);
extern void radeonfb_engine_reset(struct radeonfb_info *rinfo);
/* Other functions */
extern int radeon_screen_blank(struct radeonfb_info *rinfo, int blank, int mode_switch);
extern void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
int reg_only);
/* Backlight functions */
extern void radeonfb_bl_init(struct radeonfb_info *rinfo);
extern void radeonfb_bl_exit(struct radeonfb_info *rinfo);
static inline void radeonfb_bl_init(struct radeonfb_info *rinfo) {}
static inline void radeonfb_bl_exit(struct radeonfb_info *rinfo) {}
#endif /* __RADEONFB_H__ */