aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video/via/dvi.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video/via/dvi.c')
-rw-r--r--drivers/video/via/dvi.c160
1 files changed, 12 insertions, 148 deletions
diff --git a/drivers/video/via/dvi.c b/drivers/video/via/dvi.c
index 41ca198b5098..b1f364745ca0 100644
--- a/drivers/video/via/dvi.c
+++ b/drivers/video/via/dvi.c
@@ -28,17 +28,11 @@ static int tmds_register_read_bytes(int index, u8 *buff, int buff_len);
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)
+static inline bool check_tmds_chip(int device_id_subaddr, int device_id)
{
- if (tmds_register_read(device_id_subaddr) == device_id)
- return OK;
- else
- return FAIL;
+ return tmds_register_read(device_id_subaddr) == device_id;
}
void __devinit viafb_init_dvi_size(struct tmds_chip_information *tmds_chip,
@@ -47,22 +41,13 @@ void __devinit viafb_init_dvi_size(struct tmds_chip_information *tmds_chip,
DEBUG_MSG(KERN_INFO "viafb_init_dvi_size()\n");
viafb_dvi_sense();
- switch (viafb_dvi_query_EDID()) {
- case 1:
+ if (viafb_dvi_query_EDID() == 1)
dvi_get_panel_size_from_DDCv1(tmds_chip, tmds_setting);
- break;
- case 2:
- dvi_get_panel_size_from_DDCv2(tmds_chip, tmds_setting);
- break;
- default:
- printk(KERN_WARNING "viafb_init_dvi_size: DVI panel size undetected!\n");
- break;
- }
return;
}
-int __devinit viafb_tmds_trasmitter_identify(void)
+bool __devinit viafb_tmds_trasmitter_identify(void)
{
unsigned char sr2a = 0, sr1e = 0, sr3e = 0;
@@ -101,7 +86,7 @@ int __devinit viafb_tmds_trasmitter_identify(void)
viaparinfo->chip_info->
tmds_chip_info.tmds_chip_slave_addr = VT1632_TMDS_I2C_ADDR;
viaparinfo->chip_info->tmds_chip_info.i2c_port = VIA_PORT_31;
- if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID) != FAIL) {
+ if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID)) {
/*
* Currently only support 12bits,dual edge,add 24bits mode later
*/
@@ -112,11 +97,10 @@ int __devinit viafb_tmds_trasmitter_identify(void)
viaparinfo->chip_info->tmds_chip_info.tmds_chip_name);
DEBUG_MSG(KERN_INFO "\n %2d",
viaparinfo->chip_info->tmds_chip_info.i2c_port);
- return OK;
+ return true;
} else {
viaparinfo->chip_info->tmds_chip_info.i2c_port = VIA_PORT_2C;
- if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID)
- != FAIL) {
+ if (check_tmds_chip(VT1632_DEVICE_ID_REG, VT1632_DEVICE_ID)) {
tmds_register_write(0x08, 0x3b);
DEBUG_MSG(KERN_INFO "\n VT1632 TMDS ! \n");
DEBUG_MSG(KERN_INFO "\n %2d",
@@ -125,7 +109,7 @@ int __devinit viafb_tmds_trasmitter_identify(void)
DEBUG_MSG(KERN_INFO "\n %2d",
viaparinfo->chip_info->
tmds_chip_info.i2c_port);
- return OK;
+ return true;
}
}
@@ -135,7 +119,7 @@ int __devinit viafb_tmds_trasmitter_identify(void)
((viafb_display_hardware_layout == HW_LAYOUT_DVI_ONLY) ||
(viafb_display_hardware_layout == HW_LAYOUT_LCD_DVI))) {
DEBUG_MSG(KERN_INFO "\n Integrated TMDS ! \n");
- return OK;
+ return true;
}
switch (viaparinfo->chip_info->gfx_chip_name) {
@@ -159,7 +143,7 @@ int __devinit viafb_tmds_trasmitter_identify(void)
tmds_chip_info.tmds_chip_name = NON_TMDS_TRANSMITTER;
viaparinfo->chip_info->tmds_chip_info.
tmds_chip_slave_addr = VT1632_TMDS_I2C_ADDR;
- return FAIL;
+ return false;
}
static void tmds_register_write(int index, u8 data)
@@ -306,12 +290,7 @@ static int viafb_dvi_query_EDID(void)
return EDID_VERSION_1; /* Found EDID1 Table */
}
- data0 = (u8) tmds_register_read(0x00);
- viaparinfo->chip_info->tmds_chip_info.tmds_chip_slave_addr = restore;
- if (data0 == 0x20)
- return EDID_VERSION_2; /* Found EDID2 Table */
- else
- return false;
+ return false;
}
/* Get Panel Size Using EDID1 Table */
@@ -319,50 +298,15 @@ 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;
+ int i, restore;
unsigned char EDID_DATA[18];
DEBUG_MSG(KERN_INFO "\n dvi_get_panel_size_from_DDCv1 \n");
restore = tmds_chip->tmds_chip_slave_addr;
tmds_chip->tmds_chip_slave_addr = 0xA0;
-
- rData = tmds_register_read(0x23);
- if (rData & 0x3C)
- max_h = 640;
- if (rData & 0xC0)
- max_h = 720;
- if (rData & 0x03)
- max_h = 800;
-
- rData = tmds_register_read(0x24);
- if (rData & 0xC0)
- max_h = 800;
- if (rData & 0x1E)
- max_h = 1024;
- if (rData & 0x01)
- max_h = 1280;
-
for (i = 0x25; i < 0x6D; i++) {
switch (i) {
- case 0x26:
- case 0x28:
- case 0x2A:
- case 0x2C:
- case 0x2E:
- case 0x30:
- case 0x32:
- case 0x34:
- rData = tmds_register_read(i);
- if (rData == 1)
- break;
- /* data = (data + 31) * 8 */
- tmp = (rData + 31) << 3;
- if (tmp > max_h)
- max_h = tmp;
- break;
-
case 0x36:
case 0x48:
case 0x5A:
@@ -383,91 +327,11 @@ static void __devinit dvi_get_panel_size_from_DDCv1(
}
}
- tmds_setting->max_hres = max_h;
- switch (max_h) {
- case 640:
- tmds_setting->max_vres = 480;
- break;
- case 800:
- tmds_setting->max_vres = 600;
- break;
- case 1024:
- tmds_setting->max_vres = 768;
- break;
- case 1280:
- tmds_setting->max_vres = 1024;
- break;
- case 1400:
- tmds_setting->max_vres = 1050;
- break;
- case 1440:
- tmds_setting->max_vres = 1050;
- break;
- case 1600:
- tmds_setting->max_vres = 1200;
- break;
- case 1920:
- tmds_setting->max_vres = 1080;
- break;
- default:
- DEBUG_MSG(KERN_INFO "Unknown panel size max resolution = %d ! "
- "set default panel size.\n", max_h);
- break;
- }
-
DEBUG_MSG(KERN_INFO "DVI max pixelclock = %d\n",
tmds_setting->max_pixel_clock);
tmds_chip->tmds_chip_slave_addr = restore;
}
-/* Get Panel Size Using EDID2 Table */
-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];
-
- DEBUG_MSG(KERN_INFO "\n dvi_get_panel_size_from_DDCv2 \n");
-
- restore = tmds_chip->tmds_chip_slave_addr;
- tmds_chip->tmds_chip_slave_addr = 0xA2;
-
- /* Horizontal: 0x76, 0x77 */
- tmds_register_read_bytes(0x76, R_Buffer, 2);
- tmds_setting->max_hres = R_Buffer[0] + (R_Buffer[1] << 8);
-
- switch (tmds_setting->max_hres) {
- case 640:
- tmds_setting->max_vres = 480;
- break;
- case 800:
- tmds_setting->max_vres = 600;
- break;
- case 1024:
- tmds_setting->max_vres = 768;
- break;
- case 1280:
- tmds_setting->max_vres = 1024;
- break;
- case 1400:
- tmds_setting->max_vres = 1050;
- break;
- case 1440:
- tmds_setting->max_vres = 1050;
- break;
- case 1600:
- tmds_setting->max_vres = 1200;
- break;
- default:
- DEBUG_MSG(KERN_INFO "Unknown panel size max resolution = %d! "
- "set default panel size.\n", tmds_setting->max_hres);
- break;
- }
-
- tmds_chip->tmds_chip_slave_addr = restore;
-}
-
/* If Disable DVI, turn off pad */
void viafb_dvi_disable(void)
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.