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path: root/drivers/video/via/dvi.c
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Diffstat (limited to 'drivers/video/via/dvi.c')
-rw-r--r--drivers/video/via/dvi.c189
1 files changed, 119 insertions, 70 deletions
diff --git a/drivers/video/via/dvi.c b/drivers/video/via/dvi.c
index 39b040bb3817..84e21b39dd0b 100644
--- a/drivers/video/via/dvi.c
+++ b/drivers/video/via/dvi.c
@@ -25,10 +25,12 @@
static void tmds_register_write(int index, u8 data);
static int tmds_register_read(int index);
static int tmds_register_read_bytes(int index, u8 *buff, int buff_len);
-static void dvi_get_panel_size_from_DDCv1(struct tmds_chip_information
- *tmds_chip, struct tmds_setting_information *tmds_setting);
-static void dvi_get_panel_size_from_DDCv2(struct tmds_chip_information
- *tmds_chip, struct tmds_setting_information *tmds_setting);
+static void __devinit dvi_get_panel_size_from_DDCv1(
+ struct tmds_chip_information *tmds_chip,
+ struct tmds_setting_information *tmds_setting);
+static void __devinit dvi_get_panel_size_from_DDCv2(
+ struct tmds_chip_information *tmds_chip,
+ struct tmds_setting_information *tmds_setting);
static int viafb_dvi_query_EDID(void);
static int check_tmds_chip(int device_id_subaddr, int device_id)
@@ -39,7 +41,7 @@ static int check_tmds_chip(int device_id_subaddr, int device_id)
return FAIL;
}
-void viafb_init_dvi_size(struct tmds_chip_information *tmds_chip,
+void __devinit viafb_init_dvi_size(struct tmds_chip_information *tmds_chip,
struct tmds_setting_information *tmds_setting)
{
DEBUG_MSG(KERN_INFO "viafb_init_dvi_size()\n");
@@ -60,7 +62,7 @@ void viafb_init_dvi_size(struct tmds_chip_information *tmds_chip,
return;
}
-int viafb_tmds_trasmitter_identify(void)
+int __devinit viafb_tmds_trasmitter_identify(void)
{
unsigned char sr2a = 0, sr1e = 0, sr3e = 0;
@@ -208,8 +210,6 @@ void viafb_dvi_set_mode(struct VideoModeTable *mode, int mode_bpp,
}
}
viafb_fill_crtc_timing(pDviTiming, mode, mode_bpp / 8, set_iga);
- viafb_set_output_path(DEVICE_DVI, set_iga,
- viaparinfo->chip_info->tmds_chip_info.output_interface);
}
/* Sense DVI Connector */
@@ -313,8 +313,9 @@ static int viafb_dvi_query_EDID(void)
}
/* Get Panel Size Using EDID1 Table */
-static void dvi_get_panel_size_from_DDCv1(struct tmds_chip_information
- *tmds_chip, struct tmds_setting_information *tmds_setting)
+static void __devinit dvi_get_panel_size_from_DDCv1(
+ struct tmds_chip_information *tmds_chip,
+ struct tmds_setting_information *tmds_setting)
{
int i, max_h = 0, tmp, restore;
unsigned char rData;
@@ -418,8 +419,9 @@ static void dvi_get_panel_size_from_DDCv1(struct tmds_chip_information
}
/* Get Panel Size Using EDID2 Table */
-static void dvi_get_panel_size_from_DDCv2(struct tmds_chip_information
- *tmds_chip, struct tmds_setting_information *tmds_setting)
+static void __devinit dvi_get_panel_size_from_DDCv2(
+ struct tmds_chip_information *tmds_chip,
+ struct tmds_setting_information *tmds_setting)
{
int restore;
unsigned char R_Buffer[2];
@@ -468,64 +470,107 @@ static void dvi_get_panel_size_from_DDCv2(struct tmds_chip_information
void viafb_dvi_disable(void)
{
if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DVP0)
- viafb_write_reg(SR1E, VIASR,
- viafb_read_reg(VIASR, SR1E) & (~0xC0));
-
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DVP1)
- viafb_write_reg(SR1E, VIASR,
- viafb_read_reg(VIASR, SR1E) & (~0x30));
-
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DFP_HIGH)
- viafb_write_reg(SR2A, VIASR,
- viafb_read_reg(VIASR, SR2A) & (~0x0C));
-
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DFP_LOW)
- viafb_write_reg(SR2A, VIASR,
- viafb_read_reg(VIASR, SR2A) & (~0x03));
-
- if (viaparinfo->chip_info->
tmds_chip_info.output_interface == INTERFACE_TMDS)
/* Turn off TMDS power. */
viafb_write_reg(CRD2, VIACR,
viafb_read_reg(VIACR, CRD2) | 0x08);
}
+static void dvi_patch_skew_dvp0(void)
+{
+ /* Reset data driving first: */
+ viafb_write_reg_mask(SR1B, VIASR, 0, BIT1);
+ viafb_write_reg_mask(SR2A, VIASR, 0, BIT4);
+
+ switch (viaparinfo->chip_info->gfx_chip_name) {
+ case UNICHROME_P4M890:
+ {
+ if ((viaparinfo->tmds_setting_info->h_active == 1600) &&
+ (viaparinfo->tmds_setting_info->v_active ==
+ 1200))
+ viafb_write_reg_mask(CR96, VIACR, 0x03,
+ BIT0 + BIT1 + BIT2);
+ else
+ viafb_write_reg_mask(CR96, VIACR, 0x07,
+ BIT0 + BIT1 + BIT2);
+ break;
+ }
+
+ case UNICHROME_P4M900:
+ {
+ viafb_write_reg_mask(CR96, VIACR, 0x07,
+ BIT0 + BIT1 + BIT2 + BIT3);
+ viafb_write_reg_mask(SR1B, VIASR, 0x02, BIT1);
+ viafb_write_reg_mask(SR2A, VIASR, 0x10, BIT4);
+ break;
+ }
+
+ default:
+ {
+ break;
+ }
+ }
+}
+
+static void dvi_patch_skew_dvp_low(void)
+{
+ switch (viaparinfo->chip_info->gfx_chip_name) {
+ case UNICHROME_K8M890:
+ {
+ viafb_write_reg_mask(CR99, VIACR, 0x03, BIT0 + BIT1);
+ break;
+ }
+
+ case UNICHROME_P4M900:
+ {
+ viafb_write_reg_mask(CR99, VIACR, 0x08,
+ BIT0 + BIT1 + BIT2 + BIT3);
+ break;
+ }
+
+ case UNICHROME_P4M890:
+ {
+ viafb_write_reg_mask(CR99, VIACR, 0x0F,
+ BIT0 + BIT1 + BIT2 + BIT3);
+ break;
+ }
+
+ default:
+ {
+ break;
+ }
+ }
+}
+
/* If Enable DVI, turn off pad */
void viafb_dvi_enable(void)
{
u8 data;
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DVP0) {
- viafb_write_reg(SR1E, VIASR,
- viafb_read_reg(VIASR, SR1E) | 0xC0);
+ switch (viaparinfo->chip_info->tmds_chip_info.output_interface) {
+ case INTERFACE_DVP0:
+ viafb_write_reg_mask(CR6B, VIACR, 0x01, BIT0);
+ viafb_write_reg_mask(CR6C, VIACR, 0x21, BIT0 + BIT5);
+ dvi_patch_skew_dvp0();
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
tmds_register_write(0x88, 0x3b);
else
/*clear CR91[5] to direct on display period
in the secondary diplay path */
- viafb_write_reg(CR91, VIACR,
- viafb_read_reg(VIACR, CR91) & 0xDF);
- }
+ via_write_reg_mask(VIACR, 0x91, 0x00, 0x20);
+ break;
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DVP1) {
- viafb_write_reg(SR1E, VIASR,
- viafb_read_reg(VIASR, SR1E) | 0x30);
+ case INTERFACE_DVP1:
+ if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
+ viafb_write_reg_mask(CR93, VIACR, 0x21, BIT0 + BIT5);
/*fix dvi cann't be enabled with MB VT5718C4 - Al Zhang */
- if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266) {
+ if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
tmds_register_write(0x88, 0x3b);
- } else {
+ else
/*clear CR91[5] to direct on display period
in the secondary diplay path */
- viafb_write_reg(CR91, VIACR,
- viafb_read_reg(VIACR, CR91) & 0xDF);
- }
+ via_write_reg_mask(VIACR, 0x91, 0x00, 0x20);
/*fix DVI cannot enable on EPIA-M board */
if (viafb_platform_epia_dvi == 1) {
@@ -537,36 +582,40 @@ void viafb_dvi_enable(void)
else
data = 0x37;
viafb_i2c_writebyte(viaparinfo->chip_info->
- tmds_chip_info.i2c_port,
- viaparinfo->chip_info->
- tmds_chip_info.tmds_chip_slave_addr,
- 0x08, data);
+ tmds_chip_info.i2c_port,
+ viaparinfo->chip_info->
+ tmds_chip_info.tmds_chip_slave_addr,
+ 0x08, data);
}
}
- }
+ break;
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DFP_HIGH) {
- viafb_write_reg(SR2A, VIASR,
- viafb_read_reg(VIASR, SR2A) | 0x0C);
- viafb_write_reg(CR91, VIACR,
- viafb_read_reg(VIACR, CR91) & 0xDF);
- }
+ case INTERFACE_DFP_HIGH:
+ if (viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266)
+ via_write_reg_mask(VIACR, CR97, 0x03, 0x03);
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DFP_LOW) {
- viafb_write_reg(SR2A, VIASR,
- viafb_read_reg(VIASR, SR2A) | 0x03);
- viafb_write_reg(CR91, VIACR,
- viafb_read_reg(VIACR, CR91) & 0xDF);
- }
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_TMDS) {
+ via_write_reg_mask(VIACR, 0x91, 0x00, 0x20);
+ break;
+
+ case INTERFACE_DFP_LOW:
+ if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
+ break;
+
+ dvi_patch_skew_dvp_low();
+ via_write_reg_mask(VIACR, 0x91, 0x00, 0x20);
+ break;
+
+ case INTERFACE_TMDS:
/* Turn on Display period in the panel path. */
viafb_write_reg_mask(CR91, VIACR, 0, BIT7);
/* Turn on TMDS power. */
viafb_write_reg_mask(CRD2, VIACR, 0, BIT3);
+ break;
}
-}
+ if (viaparinfo->tmds_setting_info->iga_path == IGA2) {
+ /* Disable LCD Scaling */
+ viafb_write_reg_mask(CR79, VIACR, 0x00, BIT0);
+ }
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.