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[PATCH] atyfb: Improve power management

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Some register were only set in aty_init() which is not called on resume.  I
added the aty_resume_chip() function to reset those registers on resume.

Susped-to-ram now works on a HP Omnibook 6000 with acpi_sleep=s3_bios.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ville Syrjala
2006-12-08 02:40:45 -08:00
committed by Linus Torvalds
parent 4ec3fd71e4
commit efc08a75d3
3 changed files with 68 additions and 34 deletions
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61
drivers/video/aty/atyfb_base.c
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@@ -242,6 +242,7 @@ static int atyfb_sync(struct fb_info *info);
*/
static int aty_init(struct fb_info *info);
static void aty_resume_chip(struct fb_info *info);
#ifdef CONFIG_ATARI
static int store_video_par(char *videopar, unsigned char m64_num);
#endif
@@ -1971,6 +1972,7 @@ static void atyfb_palette(int enter)
#if defined(CONFIG_PM) && defined(CONFIG_PCI)
#ifdef CONFIG_PPC_PMAC
/* Power management routines. Those are used for PowerBook sleep.
*/
static int aty_power_mgmt(int sleep, struct atyfb_par *par)
@@ -2027,21 +2029,13 @@ static int aty_power_mgmt(int sleep, struct atyfb_par *par)
return timeout ? 0 : -EIO;
}
#endif
static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct fb_info *info = pci_get_drvdata(pdev);
struct atyfb_par *par = (struct atyfb_par *) info->par;
#ifndef CONFIG_PPC_PMAC
/* HACK ALERT ! Once I find a proper way to say to each driver
* individually what will happen with it's PCI slot, I'll change
* that. On laptops, the AGP slot is just unclocked, so D2 is
* expected, while on desktops, the card is powered off
*/
return 0;
#endif /* CONFIG_PPC_PMAC */
if (state.event == pdev->dev.power.power_state.event)
return 0;
@@ -2059,6 +2053,7 @@ static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
par->asleep = 1;
par->lock_blank = 1;
#ifdef CONFIG_PPC_PMAC
/* Set chip to "suspend" mode */
if (aty_power_mgmt(1, par)) {
par->asleep = 0;
@@ -2068,6 +2063,9 @@ static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
release_console_sem();
return -EIO;
}
#else
pci_set_power_state(pdev, pci_choose_state(pdev, state));
#endif
release_console_sem();
@@ -2086,8 +2084,15 @@ static int atyfb_pci_resume(struct pci_dev *pdev)
acquire_console_sem();
#ifdef CONFIG_PPC_PMAC
if (pdev->dev.power.power_state.event == 2)
aty_power_mgmt(0, par);
#else
pci_set_power_state(pdev, PCI_D0);
#endif
aty_resume_chip(info);
par->asleep = 0;
/* Restore display */
@@ -2339,7 +2344,6 @@ static int __devinit aty_init(struct fb_info *info)
const char *ramname = NULL, *xtal;
int gtb_memsize, has_var = 0;
struct fb_var_screeninfo var;
u32 i;
init_waitqueue_head(&par->vblank.wait);
spin_lock_init(&par->int_lock);
@@ -2470,10 +2474,10 @@ static int __devinit aty_init(struct fb_info *info)
if(par->pll_ops->get_pll)
par->pll_ops->get_pll(info, &saved_pll);
i = aty_ld_le32(MEM_CNTL, par);
par->mem_cntl = aty_ld_le32(MEM_CNTL, par);
gtb_memsize = M64_HAS(GTB_DSP);
if (gtb_memsize)
switch (i & 0xF) { /* 0xF used instead of MEM_SIZE_ALIAS */
switch (par->mem_cntl & 0xF) { /* 0xF used instead of MEM_SIZE_ALIAS */
case MEM_SIZE_512K:
info->fix.smem_len = 0x80000;
break;
@@ -2495,7 +2499,7 @@ static int __devinit aty_init(struct fb_info *info)
default:
info->fix.smem_len = 0x80000;
} else
switch (i & MEM_SIZE_ALIAS) {
switch (par->mem_cntl & MEM_SIZE_ALIAS) {
case MEM_SIZE_512K:
info->fix.smem_len = 0x80000;
break;
@@ -2525,20 +2529,20 @@ static int __devinit aty_init(struct fb_info *info)
if (vram) {
info->fix.smem_len = vram * 1024;
i = i & ~(gtb_memsize ? 0xF : MEM_SIZE_ALIAS);
par->mem_cntl &= ~(gtb_memsize ? 0xF : MEM_SIZE_ALIAS);
if (info->fix.smem_len <= 0x80000)
i |= MEM_SIZE_512K;
par->mem_cntl |= MEM_SIZE_512K;
else if (info->fix.smem_len <= 0x100000)
i |= MEM_SIZE_1M;
par->mem_cntl |= MEM_SIZE_1M;
else if (info->fix.smem_len <= 0x200000)
i |= gtb_memsize ? MEM_SIZE_2M_GTB : MEM_SIZE_2M;
par->mem_cntl |= gtb_memsize ? MEM_SIZE_2M_GTB : MEM_SIZE_2M;
else if (info->fix.smem_len <= 0x400000)
i |= gtb_memsize ? MEM_SIZE_4M_GTB : MEM_SIZE_4M;
par->mem_cntl |= gtb_memsize ? MEM_SIZE_4M_GTB : MEM_SIZE_4M;
else if (info->fix.smem_len <= 0x600000)
i |= gtb_memsize ? MEM_SIZE_6M_GTB : MEM_SIZE_6M;
par->mem_cntl |= gtb_memsize ? MEM_SIZE_6M_GTB : MEM_SIZE_6M;
else
i |= gtb_memsize ? MEM_SIZE_8M_GTB : MEM_SIZE_8M;
aty_st_le32(MEM_CNTL, i, par);
par->mem_cntl |= gtb_memsize ? MEM_SIZE_8M_GTB : MEM_SIZE_8M;
aty_st_le32(MEM_CNTL, par->mem_cntl, par);
}
/*
@@ -2584,6 +2588,8 @@ static int __devinit aty_init(struct fb_info *info)
#endif
if(par->pll_ops->init_pll)
par->pll_ops->init_pll(info, &par->pll);
if (par->pll_ops->resume_pll)
par->pll_ops->resume_pll(info, &par->pll);
/*
* Last page of 8 MB (4 MB on ISA) aperture is MMIO,
@@ -2755,6 +2761,19 @@ aty_init_exit:
return -1;
}
static void aty_resume_chip(struct fb_info *info)
{
struct atyfb_par *par = info->par;
aty_st_le32(MEM_CNTL, par->mem_cntl, par);
if (par->pll_ops->resume_pll)
par->pll_ops->resume_pll(info, &par->pll);
if (par->aux_start)
aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) | BUS_APER_REG_DIS, par);
}
#ifdef CONFIG_ATARI
static int __devinit store_video_par(char *video_str, unsigned char m64_num)
{