From 726abbc7957a2feeaf6f5e3d72579b3fd0211134 Mon Sep 17 00:00:00 2001 From: Florian Tobias Schandinat Date: Wed, 16 Mar 2011 16:31:32 +0000 Subject: 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: Florian Tobias Schandinat --- drivers/video/via/chip.h | 1 - drivers/video/via/hw.c | 17 +++++++---------- drivers/video/via/hw.h | 3 +-- drivers/video/via/viafbdev.c | 45 +++++++++++++++++++++++++++----------------- 4 files changed, 36 insertions(+), 30 deletions(-) (limited to 'drivers/video/via') diff --git a/drivers/video/via/chip.h b/drivers/video/via/chip.h index 781f3aa..29d7024 100644 --- a/drivers/video/via/chip.h +++ b/drivers/video/via/chip.h @@ -139,7 +139,6 @@ struct chip_information { struct crt_setting_information { int iga_path; - int refresh_rate; }; struct tmds_setting_information { diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c index 5728fd7..dc4c778 100644 --- a/drivers/video/via/hw.c +++ b/drivers/video/via/hw.c @@ -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; diff --git a/drivers/video/via/hw.h b/drivers/video/via/hw.h index 7295263..8858593 100644 --- a/drivers/video/via/hw.h +++ b/drivers/video/via/hw.h @@ -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); diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index f555b89..fd6a15f 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -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; -- cgit v1.1