From 2e1abbdd1dbc49e16eabd13e8b2458ee48e7b560 Mon Sep 17 00:00:00 2001 From: Florian Tobias Schandinat Date: Sun, 19 Sep 2010 01:20:19 +0000 Subject: viafb: set sync polarity for all output devices This patch sets the sync polarity for all output devices, not only CRT. This may give some people a working screen but only if lcd scaling and centering are not used as it is currently too dificult to propagate a different resolution (from what the application thinks) to the correct output device. Hopefully this does not introduce regressions as the polarity of non-CRT devices was completly ignored before. Signed-off-by: Florian Tobias Schandinat Cc: Joseph Chan --- drivers/video/via/hw.c | 34 +++++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 9 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c index d6bbb0a..00fecb5 100644 --- a/drivers/video/via/hw.c +++ b/drivers/video/via/hw.c @@ -2014,7 +2014,6 @@ void viafb_fill_crtc_timing(struct crt_mode_table *crt_table, int index = 0; int h_addr, v_addr; u32 pll_D_N; - u8 polarity = 0; for (i = 0; i < video_mode->mode_array; i++) { index = i; @@ -2041,14 +2040,6 @@ void viafb_fill_crtc_timing(struct crt_mode_table *crt_table, h_addr = crt_reg.hor_addr; v_addr = crt_reg.ver_addr; - - /* update polarity for CRT timing */ - if (crt_table[index].h_sync_polarity == NEGATIVE) - polarity |= VIA_HSYNC_NEGATIVE; - if (crt_table[index].v_sync_polarity == NEGATIVE) - polarity |= VIA_VSYNC_NEGATIVE; - via_set_sync_polarity(VIA_CRT, polarity); - if (set_iga == IGA1) { viafb_unlock_crt(); viafb_write_reg(CR09, VIACR, 0x00); /*initial CR09=0 */ @@ -2352,6 +2343,17 @@ static void set_display_channel(void) } } +static u8 get_sync(struct fb_info *info) +{ + u8 polarity = 0; + + if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT)) + polarity |= VIA_HSYNC_NEGATIVE; + if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT)) + polarity |= VIA_VSYNC_NEGATIVE; + return polarity; +} + int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp, struct VideoModeTable *vmode_tbl1, int video_bpp1) { @@ -2566,6 +2568,15 @@ int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp, viafb_DeviceStatus = CRT_Device; } device_on(); + if (!viafb_dual_fb) + via_set_sync_polarity(devices, get_sync(viafbinfo)); + else { + via_set_sync_polarity(viaparinfo->shared->iga1_devices, + get_sync(viafbinfo)); + via_set_sync_polarity(viaparinfo->shared->iga2_devices, + get_sync(viafbinfo1)); + } + via_set_state(devices, VIA_STATE_ON); device_screen_on(); return 1; @@ -2719,4 +2730,9 @@ void viafb_fill_var_timing_info(struct fb_var_screeninfo *var, int refresh, crt_reg.ver_total - (crt_reg.ver_sync_start + crt_reg.ver_sync_end); var->lower_margin = crt_reg.ver_sync_start - crt_reg.ver_addr; var->vsync_len = crt_reg.ver_sync_end; + var->sync = 0; + if (crt_timing[index].h_sync_polarity == POSITIVE) + var->sync |= FB_SYNC_HOR_HIGH_ACT; + if (crt_timing[index].v_sync_polarity == POSITIVE) + var->sync |= FB_SYNC_VERT_HIGH_ACT; } -- cgit v1.1