From: Florian Tobias Schandinat Date: Wed, 28 Jul 2010 23:06:04 +0000 (+0000) Subject: viafb: rework output device routing X-Git-Tag: v2.6.37-rc1~80^2~23 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a54be174e425cb41eb774714d03ff98562ee0824;p=platform%2Fkernel%2Flinux-stable.git viafb: rework output device routing This patch rips the device routing out of the 3 main functions to separate functions to make them available for transition to a better controlling scheme. Signed-off-by: Florian Tobias Schandinat Cc: Joseph Chan --- diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c index 1ce2c21..2f7f640 100644 --- a/drivers/video/via/hw.c +++ b/drivers/video/via/hw.c @@ -860,18 +860,78 @@ void viafb_set_output_path(int device, int set_iga, int output_interface) enable_second_display_channel(); } -static void set_crt_output_path(int set_iga) +static void set_source_common(u8 index, u8 offset, u8 iga) { - viafb_write_reg_mask(CR36, VIACR, 0x00, BIT4 + BIT5); + u8 value, mask = 1 << offset; - switch (set_iga) { + switch (iga) { + case IGA1: + value = 0x00; + break; + case IGA2: + value = mask; + break; + default: + printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga); + return; + } + + via_write_reg_mask(VIACR, index, value, mask); +} + +static void set_crt_source(u8 iga) +{ + u8 value; + + switch (iga) { case IGA1: - viafb_write_reg_mask(SR16, VIASR, 0x00, BIT6); + value = 0x00; break; case IGA2: - viafb_write_reg_mask(SR16, VIASR, 0x40, BIT6); + value = 0x40; break; + default: + printk(KERN_WARNING "viafb: Unsupported source: %d\n", iga); + return; } + + via_write_reg_mask(VIASR, 0x16, value, 0x40); +} + +static inline void set_6C_source(u8 iga) +{ + set_source_common(0x6C, 7, iga); +} + +static inline void set_93_source(u8 iga) +{ + set_source_common(0x93, 7, iga); +} + +static inline void set_96_source(u8 iga) +{ + set_source_common(0x96, 4, iga); +} + +static inline void set_dvp1_source(u8 iga) +{ + set_source_common(0x9B, 4, iga); +} + +static inline void set_lvds1_source(u8 iga) +{ + set_source_common(0x99, 4, iga); +} + +static inline void set_lvds2_source(u8 iga) +{ + set_source_common(0x97, 4, iga); +} + +static void set_crt_output_path(int set_iga) +{ + viafb_write_reg_mask(CR36, VIACR, 0x00, BIT4 + BIT5); + set_crt_source(set_iga); } static void dvi_patch_skew_dvp0(void) @@ -944,76 +1004,45 @@ static void set_dvi_output_path(int set_iga, int output_interface) { switch (output_interface) { case INTERFACE_DVP0: + set_96_source(set_iga); + set_6C_source(set_iga); viafb_write_reg_mask(CR6B, VIACR, 0x01, BIT0); - - if (set_iga == IGA1) { - viafb_write_reg_mask(CR96, VIACR, 0x00, BIT4); - viafb_write_reg_mask(CR6C, VIACR, 0x21, BIT0 + - BIT5 + BIT7); - } else { - viafb_write_reg_mask(CR96, VIACR, 0x10, BIT4); - viafb_write_reg_mask(CR6C, VIACR, 0xA1, BIT0 + - BIT5 + BIT7); - } - + viafb_write_reg_mask(CR6C, VIACR, 0x21, BIT0 + BIT5); viafb_write_reg_mask(SR1E, VIASR, 0xC0, BIT7 + BIT6); - dvi_patch_skew_dvp0(); break; case INTERFACE_DVP1: if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) { - if (set_iga == IGA1) - viafb_write_reg_mask(CR93, VIACR, 0x21, - BIT0 + BIT5 + BIT7); - else - viafb_write_reg_mask(CR93, VIACR, 0xA1, - BIT0 + BIT5 + BIT7); + set_93_source(set_iga); + viafb_write_reg_mask(CR93, VIACR, 0x21, BIT0 + BIT5); } else { - if (set_iga == IGA1) - viafb_write_reg_mask(CR9B, VIACR, 0x00, BIT4); - else - viafb_write_reg_mask(CR9B, VIACR, 0x10, BIT4); + set_dvp1_source(set_iga); } viafb_write_reg_mask(SR1E, VIASR, 0x30, BIT4 + BIT5); break; case INTERFACE_DFP_HIGH: if (viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266) { - if (set_iga == IGA1) { - viafb_write_reg_mask(CR96, VIACR, 0x00, BIT4); - viafb_write_reg_mask(CR97, VIACR, 0x03, - BIT0 + BIT1 + BIT4); - } else { - viafb_write_reg_mask(CR96, VIACR, 0x10, BIT4); - viafb_write_reg_mask(CR97, VIACR, 0x13, - BIT0 + BIT1 + BIT4); - } + via_write_reg_mask(VIACR, CR97, 0x03, 0x03); + set_lvds2_source(set_iga); + set_96_source(set_iga); } + viafb_write_reg_mask(SR2A, VIASR, 0x0C, BIT2 + BIT3); break; case INTERFACE_DFP_LOW: if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) break; - - if (set_iga == IGA1) { - viafb_write_reg_mask(CR99, VIACR, 0x00, BIT4); - viafb_write_reg_mask(CR9B, VIACR, 0x00, BIT4); - } else { - viafb_write_reg_mask(CR99, VIACR, 0x10, BIT4); - viafb_write_reg_mask(CR9B, VIACR, 0x10, BIT4); - } - + set_dvp1_source(set_iga); + set_lvds1_source(set_iga); viafb_write_reg_mask(SR2A, VIASR, 0x03, BIT0 + BIT1); dvi_patch_skew_dvp_low(); break; case INTERFACE_TMDS: - if (set_iga == IGA1) - viafb_write_reg_mask(CR99, VIACR, 0x00, BIT4); - else - viafb_write_reg_mask(CR99, VIACR, 0x10, BIT4); + set_lvds1_source(set_iga); break; } @@ -1031,45 +1060,31 @@ static void set_lcd_output_path(int set_iga, int output_interface) viafb_write_reg_mask(CR6B, VIACR, 0x00, BIT3); viafb_write_reg_mask(CR6A, VIACR, 0x08, BIT3); - switch (output_interface) { case INTERFACE_DVP0: - if (set_iga == IGA1) { - viafb_write_reg_mask(CR96, VIACR, 0x00, BIT4); - } else { + set_96_source(set_iga); + if (set_iga == IGA2) viafb_write_reg(CR91, VIACR, 0x00); - viafb_write_reg_mask(CR96, VIACR, 0x10, BIT4); - } break; case INTERFACE_DVP1: - if (set_iga == IGA1) - viafb_write_reg_mask(CR9B, VIACR, 0x00, BIT4); - else { + set_dvp1_source(set_iga); + if (set_iga == IGA2) viafb_write_reg(CR91, VIACR, 0x00); - viafb_write_reg_mask(CR9B, VIACR, 0x10, BIT4); - } break; case INTERFACE_DFP_HIGH: - if (set_iga == IGA1) - viafb_write_reg_mask(CR97, VIACR, 0x00, BIT4); - else { + set_lvds2_source(set_iga); + set_96_source(set_iga); + if (set_iga == IGA2) viafb_write_reg(CR91, VIACR, 0x00); - viafb_write_reg_mask(CR97, VIACR, 0x10, BIT4); - viafb_write_reg_mask(CR96, VIACR, 0x10, BIT4); - } break; case INTERFACE_DFP_LOW: - if (set_iga == IGA1) - viafb_write_reg_mask(CR99, VIACR, 0x00, BIT4); - else { + set_lvds1_source(set_iga); + set_dvp1_source(set_iga); + if (set_iga == IGA2) viafb_write_reg(CR91, VIACR, 0x00); - viafb_write_reg_mask(CR99, VIACR, 0x10, BIT4); - viafb_write_reg_mask(CR9B, VIACR, 0x10, BIT4); - } - break; case INTERFACE_DFP: @@ -1078,30 +1093,20 @@ static void set_lcd_output_path(int set_iga, int output_interface) viaparinfo->chip_info->gfx_chip_name)) viafb_write_reg_mask(CR97, VIACR, 0x84, BIT7 + BIT2 + BIT1 + BIT0); - if (set_iga == IGA1) { - viafb_write_reg_mask(CR97, VIACR, 0x00, BIT4); - viafb_write_reg_mask(CR99, VIACR, 0x00, BIT4); - } else { + + set_lvds1_source(set_iga); + set_lvds2_source(set_iga); + if (set_iga == IGA2) viafb_write_reg(CR91, VIACR, 0x00); - viafb_write_reg_mask(CR97, VIACR, 0x10, BIT4); - viafb_write_reg_mask(CR99, VIACR, 0x10, BIT4); - } break; case INTERFACE_LVDS0: case INTERFACE_LVDS0LVDS1: - if (set_iga == IGA1) - viafb_write_reg_mask(CR99, VIACR, 0x00, BIT4); - else - viafb_write_reg_mask(CR99, VIACR, 0x10, BIT4); - + set_lvds1_source(set_iga); break; case INTERFACE_LVDS1: - if (set_iga == IGA1) - viafb_write_reg_mask(CR97, VIACR, 0x00, BIT4); - else - viafb_write_reg_mask(CR97, VIACR, 0x10, BIT4); + set_lvds2_source(set_iga); break; } }