Commit 726abbc7 authored by Florian Tobias Schandinat's avatar Florian Tobias Schandinat
Browse files

viafb: refresh rate bug collection 



This patch fixes multiple issues with the handling of refresh rates
especially for multi-display setups. If you experienced problems
with wrong refresh rates this patch might fix them.

Signed-off-by: default avatarFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>
parent 2563afa9

drivers/video/via/chip.h

+0 −1
Original line number Diff line number Diff line
@@ -139,7 +139,6 @@ struct chip_information { 


struct crt_setting_information {

	int iga_path;

	int refresh_rate;

};



struct tmds_setting_information {

drivers/video/via/hw.c

+7 −10
Original line number Diff line number Diff line
@@ -2002,13 +2002,15 @@ void viafb_fill_crtc_timing(struct crt_mode_table *crt_table, 
	int i;

	int index = 0;

	int h_addr, v_addr;

	u32 pll_D_N, clock;

	u32 pll_D_N, clock, refresh = viafb_refresh;



	if (viafb_SAMM_ON && set_iga == IGA2)

		refresh = viafb_refresh1;



	for (i = 0; i < video_mode->mode_array; i++) {

		index = i;



		if (crt_table[i].refresh_rate == viaparinfo->

			crt_setting_info->refresh_rate)

		if (crt_table[i].refresh_rate == refresh)

			break;

	}
@@ -2019,7 +2021,7 @@ void viafb_fill_crtc_timing(struct crt_mode_table *crt_table, 
	if ((viafb_LCD_ON | viafb_DVI_ON)

	    && video_mode->crtc[0].crtc.hor_addr == 640

	    && video_mode->crtc[0].crtc.ver_addr == 480

	    && viaparinfo->crt_setting_info->refresh_rate == 60) {

	    && refresh == 60) {

		/* The border is 8 pixels. */

		crt_reg.hor_blank_start = crt_reg.hor_blank_start - 8;
@@ -2070,7 +2072,6 @@ void __devinit viafb_init_chip_info(int chip_type) 
	init_lvds_chip_info();



	viaparinfo->crt_setting_info->iga_path = IGA1;

	viaparinfo->crt_setting_info->refresh_rate = viafb_refresh;



	/*Set IGA path for each device */

	viafb_set_iga_path();
@@ -2083,13 +2084,9 @@ void __devinit viafb_init_chip_info(int chip_type) 
		viaparinfo->lvds_setting_info->lcd_mode;

}



void viafb_update_device_setting(int hres, int vres,

	int bpp, int vmode_refresh, int flag)

void viafb_update_device_setting(int hres, int vres, int bpp, int flag)

{

	if (flag == 0) {

		viaparinfo->crt_setting_info->refresh_rate =

			vmode_refresh;



		viaparinfo->tmds_setting_info->h_active = hres;

		viaparinfo->tmds_setting_info->v_active = vres;

drivers/video/via/hw.h

+1 −2
Original line number Diff line number Diff line
@@ -949,8 +949,7 @@ void __devinit viafb_init_chip_info(int chip_type); 
void __devinit viafb_init_dac(int set_iga);

int viafb_get_pixclock(int hres, int vres, int vmode_refresh);

int viafb_get_refresh(int hres, int vres, u32 float_refresh);

void viafb_update_device_setting(int hres, int vres, int bpp,

			   int vmode_refresh, int flag);

void viafb_update_device_setting(int hres, int vres, int bpp, int flag);



void viafb_set_iga_path(void);

void viafb_set_primary_color_register(u8 index, u8 red, u8 green, u8 blue);

drivers/video/via/viafbdev.c

+28 −17
Original line number Diff line number Diff line
@@ -182,13 +182,24 @@ static int viafb_release(struct fb_info *info, int user) 
	return 0;

}



static inline int get_var_refresh(struct fb_var_screeninfo *var)

{

	u32 htotal, vtotal;



	htotal = var->left_margin + var->xres + var->right_margin

		+ var->hsync_len;

	vtotal = var->upper_margin + var->yres + var->lower_margin

		+ var->vsync_len;

	return PICOS2KHZ(var->pixclock) * 1000 / (htotal * vtotal);

}



static int viafb_check_var(struct fb_var_screeninfo *var,

	struct fb_info *info)

{

	int htotal, vtotal, depth;

	int depth, refresh;

	struct VideoModeTable *vmode_entry;

	struct viafb_par *ppar = info->par;

	u32 long_refresh, line;

	u32 line;



	DEBUG_MSG(KERN_INFO "viafb_check_var!\n");

	/* Sanity check */
@@ -231,17 +242,11 @@ static int viafb_check_var(struct fb_var_screeninfo *var, 
	/* Based on var passed in to calculate the refresh,

	 * because our driver use some modes special.

	 */

	htotal = var->xres + var->left_margin +

	var->right_margin + var->hsync_len;

	vtotal = var->yres + var->upper_margin +

		var->lower_margin + var->vsync_len;

	long_refresh = 1000000000UL / var->pixclock * 1000;

	long_refresh /= (htotal * vtotal);



	viafb_refresh = viafb_get_refresh(var->xres, var->yres, long_refresh);

	refresh = viafb_get_refresh(var->xres, var->yres,

		get_var_refresh(var));



	/* Adjust var according to our driver's own table */

	viafb_fill_var_timing_info(var, viafb_refresh, vmode_entry);

	viafb_fill_var_timing_info(var, refresh, vmode_entry);

	if (var->accel_flags & FB_ACCELF_TEXT &&

		!ppar->shared->vdev->engine_mmio)

		var->accel_flags = 0;
@@ -253,12 +258,13 @@ static int viafb_set_par(struct fb_info *info) 
{

	struct viafb_par *viapar = info->par;

	struct VideoModeTable *vmode_entry, *vmode_entry1 = NULL;

	int refresh;

	DEBUG_MSG(KERN_INFO "viafb_set_par!\n");



	viafb_update_fix(info);

	viapar->depth = fb_get_color_depth(&info->var, &info->fix);

	viafb_update_device_setting(viafbinfo->var.xres, viafbinfo->var.yres,

		viafbinfo->var.bits_per_pixel, viafb_refresh, 0);

		viafbinfo->var.bits_per_pixel, 0);



	vmode_entry = viafb_get_mode(viafbinfo->var.xres, viafbinfo->var.yres);

	if (viafb_dual_fb) {
@@ -266,7 +272,7 @@ static int viafb_set_par(struct fb_info *info) 
			viafbinfo1->var.yres);

		viafb_update_device_setting(viafbinfo1->var.xres,

			viafbinfo1->var.yres, viafbinfo1->var.bits_per_pixel,

			viafb_refresh1, 1);

			1);

	} else if (viafb_SAMM_ON == 1) {

		DEBUG_MSG(KERN_INFO

		"viafb_second_xres = %d, viafb_second_yres = %d, bpp = %d\n",
@@ -275,14 +281,19 @@ static int viafb_set_par(struct fb_info *info) 
			viafb_second_yres);



		viafb_update_device_setting(viafb_second_xres,

			viafb_second_yres, viafb_bpp1, viafb_refresh1, 1);

			viafb_second_yres, viafb_bpp1, 1);

	}



	refresh = viafb_get_refresh(info->var.xres, info->var.yres,

		get_var_refresh(&info->var));

	if (vmode_entry) {

		if (viafb_dual_fb && viapar->iga_path == IGA2)

		if (viafb_dual_fb && viapar->iga_path == IGA2) {

			viafb_bpp1 = info->var.bits_per_pixel;

		else

			viafb_refresh1 = refresh;

		} else {

			viafb_bpp = info->var.bits_per_pixel;

			viafb_refresh = refresh;

		}



		if (info->var.accel_flags & FB_ACCELF_TEXT)

			info->flags &= ~FBINFO_HWACCEL_DISABLED;
@@ -1843,7 +1854,7 @@ int __devinit via_fb_pci_probe(struct viafb_dev *vdev) 
		default_var.bits_per_pixel = viafb_bpp1;

		default_var.pixclock =

		    viafb_get_pixclock(viafb_second_xres, viafb_second_yres,

		    viafb_refresh);

		    viafb_refresh1);

		default_var.left_margin = (viafb_second_xres >> 3) & 0xf8;

		default_var.right_margin = 32;

		default_var.upper_margin = 16;

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