X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fvideo%2Faty%2Fmach64_ct.c;h=1fdcfdbf669b2a26f770af8d4b5816479f8f6f86;hb=refs%2Fheads%2Fvserver;hp=e7056934c6a831c06620fd6ea1a45d1b689c3ead;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/drivers/video/aty/mach64_ct.c b/drivers/video/aty/mach64_ct.c
index e7056934c..1fdcfdbf6 100644
--- a/drivers/video/aty/mach64_ct.c
+++ b/drivers/video/aty/mach64_ct.c
@@ -27,7 +27,7 @@ u8 aty_ld_pll_ct(int offset, const struct atyfb_par *par)
 	return res;
 }
 
-void aty_st_pll_ct(int offset, u8 val, const struct atyfb_par *par)
+static void aty_st_pll_ct(int offset, u8 val, const struct atyfb_par *par)
 {
 	/* write addr byte */
 	aty_st_8(CLOCK_CNTL_ADDR, ((offset << 2) & PLL_ADDR) | PLL_WR_EN, par);
@@ -370,8 +370,8 @@ void aty_set_pll_ct(const struct fb_info *info, const union aty_pll *pll)
 #endif
 }
 
-static void __init aty_get_pll_ct(const struct fb_info *info,
-				  union aty_pll *pll)
+static void __devinit aty_get_pll_ct(const struct fb_info *info,
+				     union aty_pll *pll)
 {
 	struct atyfb_par *par = (struct atyfb_par *) info->par;
 	u8 tmp, clock;
@@ -394,12 +394,12 @@ static void __init aty_get_pll_ct(const struct fb_info *info,
 	}
 }
 
-static int __init aty_init_pll_ct(const struct fb_info *info,
-				 union aty_pll *pll)
+static int __devinit aty_init_pll_ct(const struct fb_info *info,
+				     union aty_pll *pll)
 {
 	struct atyfb_par *par = (struct atyfb_par *) info->par;
-	u8 mpost_div, xpost_div, sclk_post_div_real, sclk_fb_div, spll_cntl2;
-	u32 q, i, memcntl, trp;
+	u8 mpost_div, xpost_div, sclk_post_div_real;
+	u32 q, memcntl, trp;
 	u32 dsp_config, dsp_on_off, vga_dsp_config, vga_dsp_on_off;
 #ifdef DEBUG
 	int pllmclk, pllsclk;
@@ -575,14 +575,29 @@ static int __init aty_init_pll_ct(const struct fb_info *info,
 			mpost_div += (q <  32*8);
 		}
 		sclk_post_div_real = postdividers[mpost_div];
-		sclk_fb_div = q * sclk_post_div_real / 8;
-		spll_cntl2 = mpost_div << 4;
+		pll->ct.sclk_fb_div = q * sclk_post_div_real / 8;
+		pll->ct.spll_cntl2 = mpost_div << 4;
 #ifdef DEBUG
-		pllsclk = (1000000 * 2 * sclk_fb_div) /
+		pllsclk = (1000000 * 2 * pll->ct.sclk_fb_div) /
 			(par->ref_clk_per * pll->ct.pll_ref_div);
 		printk("atyfb(%s): use sclk, pllsclk=%d MHz, sclk=mclk=%d MHz\n",
 			__FUNCTION__, pllsclk, pllsclk / sclk_post_div_real);
 #endif
+	}
+
+	/* Disable the extra precision pixel clock controls since we do not use them. */
+	pll->ct.ext_vpll_cntl = aty_ld_pll_ct(EXT_VPLL_CNTL, par);
+	pll->ct.ext_vpll_cntl &= ~(EXT_VPLL_EN | EXT_VPLL_VGA_EN | EXT_VPLL_INSYNC);
+
+	return 0;
+}
+
+static void aty_resume_pll_ct(const struct fb_info *info,
+			      union aty_pll *pll)
+{
+	struct atyfb_par *par = info->par;
+
+	if (par->mclk_per != par->xclk_per) {
 		/*
 		* This disables the sclk, crashes the computer as reported:
 		* aty_st_pll_ct(SPLL_CNTL2, 3, info);
@@ -590,26 +605,22 @@ static int __init aty_init_pll_ct(const struct fb_info *info,
 		* So it seems the sclk must be enabled before it is used;
 		* so PLL_GEN_CNTL must be programmed *after* the sclk.
 		*/
-		aty_st_pll_ct(SCLK_FB_DIV, sclk_fb_div, par);
-		aty_st_pll_ct(SPLL_CNTL2, spll_cntl2, par);
+		aty_st_pll_ct(SCLK_FB_DIV, pll->ct.sclk_fb_div, par);
+		aty_st_pll_ct(SPLL_CNTL2, pll->ct.spll_cntl2, par);
 		/*
 		 * The sclk has been started. However, I believe the first clock
 		 * ticks it generates are not very stable. Hope this primitive loop
 		 * helps for Rage Mobilities that sometimes crash when
 		 * we switch to sclk. (Daniel Mantione, 13-05-2003)
 		 */
-		for (i=0;i<=0x1ffff;i++);
+		udelay(500);
 	}
 
 	aty_st_pll_ct(PLL_REF_DIV, pll->ct.pll_ref_div, par);
 	aty_st_pll_ct(PLL_GEN_CNTL, pll->ct.pll_gen_cntl, par);
 	aty_st_pll_ct(MCLK_FB_DIV, pll->ct.mclk_fb_div, par);
 	aty_st_pll_ct(PLL_EXT_CNTL, pll->ct.pll_ext_cntl, par);
-	/* Disable the extra precision pixel clock controls since we do not use them. */
-	aty_st_pll_ct(EXT_VPLL_CNTL, aty_ld_pll_ct(EXT_VPLL_CNTL, par) &
-		~(EXT_VPLL_EN | EXT_VPLL_VGA_EN | EXT_VPLL_INSYNC), par);
-
-	return 0;
+	aty_st_pll_ct(EXT_VPLL_CNTL, pll->ct.ext_vpll_cntl, par);
 }
 
 static int dummy(void)
@@ -626,5 +637,6 @@ const struct aty_pll_ops aty_pll_ct = {
 	.pll_to_var	= aty_pll_to_var_ct,
 	.set_pll	= aty_set_pll_ct,
 	.get_pll	= aty_get_pll_ct,
-	.init_pll       = aty_init_pll_ct
+	.init_pll	= aty_init_pll_ct,
+	.resume_pll	= aty_resume_pll_ct,
 };