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linux-next/drivers/video/aty/radeonfb.h
Benjamin Herrenschmidt 1fb25cb8b8 radeonfb: Fix resume from D3Cold on some platforms 
For historical reason, this driver used its own saving/restoring
of the PCI config space, and used the state of it on resume as
an indication as to whether it needed to re-POST the chip or not.

This methods breaks with the later core changes since the core will
have restored things for us.

This patch fixes it by removing that custom code, using standard
core methods to save/restore state, and testing for the need to
re-POST by comparing the content of a few key PLL registers.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-02-08 10:48:57 -08:00

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#ifndef __RADEONFB_H__
#define __RADEONFB_H__
#ifdef CONFIG_FB_RADEON_DEBUG
#define DEBUG 1
#endif
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/fb.h>
#ifdef CONFIG_FB_RADEON_I2C
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#endif
#include <asm/io.h>
#if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC)
#include <asm/prom.h>
#endif
#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_UNKNOW,
CHIP_FAMILY_LEGACY,
CHIP_FAMILY_RADEON,
CHIP_FAMILY_RV100,
CHIP_FAMILY_RS100, /* U1 (IGP320M) or A3 (IGP320)*/
CHIP_FAMILY_RV200,
CHIP_FAMILY_RS200, /* U2 (IGP330M/340M/350M) or A4 (IGP330/340/345/350),
RS250 (IGP 7000) */
CHIP_FAMILY_R200,
CHIP_FAMILY_RV250,
CHIP_FAMILY_RS300, /* Radeon 9000 IGP */
CHIP_FAMILY_RV280,
CHIP_FAMILY_R300,
CHIP_FAMILY_R350,
CHIP_FAMILY_RV350,
CHIP_FAMILY_RV380, /* RV370/RV380/M22/M24 */
CHIP_FAMILY_R420, /* R420/R423/M18 */
CHIP_FAMILY_RC410,
CHIP_FAMILY_RS400,
CHIP_FAMILY_RS480,
CHIP_FAMILY_LAST,
};
#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,
CHIP_ERRATA_PLL_DUMMYREADS = 0x00000002,
CHIP_ERRATA_PLL_DELAY = 0x00000004,
};
/*
* 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 {
ddc_none,
ddc_monid,
ddc_dvi,
ddc_vga,
ddc_crt2,
};
/*
* Connector types
*/
enum conn_type {
conn_none,
conn_proprietary,
conn_crt,
conn_DVI_I,
conn_DVI_D,
};
/*
* 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;
#ifdef CONFIG_FB_RADEON_I2C
struct radeon_i2c_chan {
struct radeonfb_info *rinfo;
u32 ddc_reg;
struct i2c_adapter adapter;
struct i2c_algo_bit_data algo;
};
#endif
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_OF) || defined(CONFIG_SPARC)
struct device_node *of_node;
#endif
void __iomem *bios_seg;
int fp_bios_start;
u32 pseudo_palette[16];
struct { u8 red, green, blue, pad; }
palette[256];
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 mtrr_hdl;
int pm_reg;
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;
#ifdef CONFIG_FB_RADEON_I2C
struct radeon_i2c_chan i2c[4];
#endif
};
#define PRIMARY_MONITOR(rinfo) (rinfo->mon1_type)
/*
* IO macros
*/
/* Note about this function: we have some rare cases where we must not schedule,
* this typically happen with our special "wake up early" hook which allows us to
* wake up the graphic chip (and thus get the console back) before everything else
* on some machines that support that mechanism. At this point, interrupts are off
* and scheduling is not permitted
*/
static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
{
if (rinfo->no_schedule || oops_in_progress)
mdelay(ms);
else
msleep(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)
static inline void _OUTREGP(struct radeonfb_info *rinfo, u32 addr,
u32 val, u32 mask)
{
unsigned long flags;
unsigned int tmp;
spin_lock_irqsave(&rinfo->reg_lock, flags);
tmp = INREG(addr);
tmp &= (mask);
tmp |= (val);
OUTREG(addr, tmp);
spin_unlock_irqrestore(&rinfo->reg_lock, flags);
}
#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.
*/
static inline void radeon_pll_errata_after_index(struct radeonfb_info *rinfo)
{
if (!(rinfo->errata & CHIP_ERRATA_PLL_DUMMYREADS))
return;
(void)INREG(CLOCK_CNTL_DATA);
(void)INREG(CRTC_GEN_CNTL);
}
static inline void radeon_pll_errata_after_data(struct radeonfb_info *rinfo)
{
if (rinfo->errata & CHIP_ERRATA_PLL_DELAY) {
/* we can't deal with posted writes here ... */
_radeon_msleep(rinfo, 5);
}
if (rinfo->errata & CHIP_ERRATA_R300_CG) {
u32 save, tmp;
save = INREG(CLOCK_CNTL_INDEX);
tmp = save & ~(0x3f | PLL_WR_EN);
OUTREG(CLOCK_CNTL_INDEX, tmp);
tmp = INREG(CLOCK_CNTL_DATA);
OUTREG(CLOCK_CNTL_INDEX, save);
}
}
static inline u32 __INPLL(struct radeonfb_info *rinfo, u32 addr)
{
u32 data;
OUTREG8(CLOCK_CNTL_INDEX, addr & 0x0000003f);
radeon_pll_errata_after_index(rinfo);
data = INREG(CLOCK_CNTL_DATA);
radeon_pll_errata_after_data(rinfo);
return data;
}
static inline void __OUTPLL(struct radeonfb_info *rinfo, unsigned int index,
u32 val)
{
OUTREG8(CLOCK_CNTL_INDEX, (index & 0x0000003f) | 0x00000080);
radeon_pll_errata_after_index(rinfo);
OUTREG(CLOCK_CNTL_DATA, val);
radeon_pll_errata_after_data(rinfo);
}
static inline void __OUTPLLP(struct radeonfb_info *rinfo, unsigned int index,
u32 val, u32 mask)
{
unsigned int tmp;
tmp = __INPLL(rinfo, index);
tmp &= (mask);
tmp |= (val);
__OUTPLL(rinfo, index, tmp);
}
#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;
default:
return 0;
}
}
/*
* 2D Engine helper routines
*/
static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
{
int i;
for (i=0; i<2000000; i++) {
if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
return;
udelay(1);
}
printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
}
static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
{
int i;
/* Initiate flush */
OUTREGP(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
~RB2D_DC_FLUSH_ALL);
/* Ensure FIFO is empty, ie, make sure the flush commands
* has reached the cache
*/
_radeon_fifo_wait (rinfo, 64);
/* Wait for the flush to complete */
for (i=0; i < 2000000; i++) {
if (!(INREG(DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
return;
udelay(1);
}
printk(KERN_ERR "radeonfb: Flush Timeout !\n");
}
static inline void _radeon_engine_idle(struct radeonfb_info *rinfo)
{
int i;
/* ensure FIFO is empty before waiting for idle */
_radeon_fifo_wait (rinfo, 64);
for (i=0; i<2000000; i++) {
if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
radeon_engine_flush (rinfo);
return;
}
udelay(1);
}
printk(KERN_ERR "radeonfb: Idle Timeout !\n");
}
#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 int radeonfb_pci_suspend(struct pci_dev *pdev, pm_message_t state);
extern int radeonfb_pci_resume(struct pci_dev *pdev);
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 */
#ifdef CONFIG_FB_RADEON_BACKLIGHT
extern void radeonfb_bl_init(struct radeonfb_info *rinfo);
extern void radeonfb_bl_exit(struct radeonfb_info *rinfo);
#else
static inline void radeonfb_bl_init(struct radeonfb_info *rinfo) {}
static inline void radeonfb_bl_exit(struct radeonfb_info *rinfo) {}
#endif
#endif /* __RADEONFB_H__ */
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