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path: root/drivers/gpu/drm/radeon/radeon_combios.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_combios.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_combios.c77
1 files changed, 69 insertions, 8 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 5e1474cde4b4..18c84cf3eafa 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -479,6 +479,17 @@ radeon_combios_get_hardcoded_edid(struct radeon_device *rdev)
return NULL;
}
+/* standard i2c gpio lines */
+#define RADEON_I2C_MONID_ID 0
+#define RADEON_I2C_DVI_ID 1
+#define RADEON_I2C_VGA_ID 2
+#define RADEON_I2C_CRT2_ID 3
+#define RADEON_I2C_MM_ID 4
+/* custom defined gpio lines */
+#define RADEON_I2C_LCD_ID 5 /* ddc for laptop panels */
+#define RADEON_I2C_GPIO_ID 6 /* rs4xx gpio ddc */
+#define RADEON_I2C_DVO_ID 7 /* i2c bus for dvo */
+
static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rdev,
int ddc_line)
{
@@ -599,7 +610,24 @@ static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rde
break;
}
i2c.mm_i2c = false;
- i2c.i2c_id = 0;
+
+ switch (ddc_line) {
+ case RADEON_GPIO_MONID:
+ i2c.i2c_id = RADEON_I2C_MONID_ID;
+ break;
+ case RADEON_GPIO_DVI_DDC:
+ i2c.i2c_id = RADEON_I2C_DVI_ID;
+ break;
+ case RADEON_GPIO_VGA_DDC:
+ i2c.i2c_id = RADEON_I2C_VGA_ID;
+ break;
+ case RADEON_GPIO_CRT2_DDC:
+ i2c.i2c_id = RADEON_I2C_CRT2_ID;
+ break;
+ default:
+ i2c.i2c_id = 0xff;
+ break;
+ }
i2c.hpd = RADEON_HPD_NONE;
if (ddc_line)
@@ -610,6 +638,30 @@ static struct radeon_i2c_bus_rec combios_setup_i2c_bus(struct radeon_device *rde
return i2c;
}
+void radeon_combios_i2c_init(struct radeon_device *rdev)
+{
+ struct drm_device *dev = rdev->ddev;
+ struct radeon_i2c_bus_rec i2c;
+
+ i2c = combios_setup_i2c_bus(rdev, RADEON_GPIO_MONID);
+ rdev->i2c_bus[0] = radeon_i2c_create(dev, &i2c, "MONID");
+
+ i2c = combios_setup_i2c_bus(rdev, RADEON_GPIO_DVI_DDC);
+ rdev->i2c_bus[1] = radeon_i2c_create(dev, &i2c, "DVI_DDC");
+
+ i2c = combios_setup_i2c_bus(rdev, RADEON_GPIO_VGA_DDC);
+ rdev->i2c_bus[2] = radeon_i2c_create(dev, &i2c, "VGA_DDC");
+
+ i2c = combios_setup_i2c_bus(rdev, RADEON_GPIO_CRT2_DDC);
+ rdev->i2c_bus[3] = radeon_i2c_create(dev, &i2c, "CRT2_DDC");
+
+ i2c.valid = true;
+ i2c.hw_capable = true;
+ i2c.mm_i2c = true;
+ i2c.i2c_id = RADEON_I2C_MM_ID;
+ rdev->i2c_bus[4] = radeon_i2c_create(dev, &i2c, "MM_I2C");
+}
+
bool radeon_combios_get_clock_info(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
@@ -1248,7 +1300,7 @@ bool radeon_legacy_get_ext_tmds_info_from_table(struct radeon_encoder *encoder,
/* default for macs */
i2c_bus = combios_setup_i2c_bus(rdev, RADEON_GPIO_MONID);
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
/* XXX some macs have duallink chips */
switch (rdev->mode_info.connector_table) {
@@ -1303,7 +1355,9 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder
i2c_bus.en_data_reg = RADEON_GPIOPAD_EN;
i2c_bus.y_clk_reg = RADEON_GPIOPAD_Y;
i2c_bus.y_data_reg = RADEON_GPIOPAD_Y;
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ i2c_bus.i2c_id = RADEON_I2C_DVO_ID;
+ radeon_i2c_add(rdev, &i2c_bus, "DVO");
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
tmds->dvo_chip = DVO_SIL164;
tmds->slave_addr = 0x70 >> 1; /* 7 bit addressing */
break;
@@ -1321,15 +1375,15 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder
switch (gpio) {
case DDC_MONID:
i2c_bus = combios_setup_i2c_bus(rdev, RADEON_GPIO_MONID);
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
break;
case DDC_DVI:
i2c_bus = combios_setup_i2c_bus(rdev, RADEON_GPIO_DVI_DDC);
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
break;
case DDC_VGA:
i2c_bus = combios_setup_i2c_bus(rdev, RADEON_GPIO_VGA_DDC);
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
break;
case DDC_CRT2:
/* R3xx+ chips don't have GPIO_CRT2_DDC gpio pad */
@@ -1337,13 +1391,14 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder
i2c_bus = combios_setup_i2c_bus(rdev, RADEON_GPIO_MONID);
else
i2c_bus = combios_setup_i2c_bus(rdev, RADEON_GPIO_CRT2_DDC);
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
break;
case DDC_LCD: /* MM i2c */
i2c_bus.valid = true;
i2c_bus.hw_capable = true;
i2c_bus.mm_i2c = true;
- tmds->i2c_bus = radeon_i2c_create(dev, &i2c_bus, "DVO");
+ i2c_bus.i2c_id = RADEON_I2C_MM_ID;
+ tmds->i2c_bus = radeon_i2c_lookup(rdev, &i2c_bus);
break;
default:
DRM_ERROR("Unsupported gpio %d\n", gpio);
@@ -1926,6 +1981,8 @@ static bool radeon_apply_legacy_quirks(struct drm_device *dev,
ddc_i2c->en_data_mask = 0x80;
ddc_i2c->y_clk_mask = (0x20 << 8);
ddc_i2c->y_data_mask = 0x80;
+ ddc_i2c->i2c_id = RADEON_I2C_GPIO_ID;
+ radeon_i2c_add(rdev, ddc_i2c, "GPIO_DDC");
}
/* R3xx+ chips don't have GPIO_CRT2_DDC gpio pad */
@@ -2318,6 +2375,8 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.y_data_mask =
RBIOS32(lcd_ddc_info + 7);
+ ddc_i2c.i2c_id = RADEON_I2C_LCD_ID;
+ radeon_i2c_add(rdev, &ddc_i2c, "LCD");
break;
case DDC_GPIO:
ddc_i2c =
@@ -2339,6 +2398,8 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.y_data_mask =
RBIOS32(lcd_ddc_info + 7);
+ ddc_i2c.i2c_id = RADEON_I2C_LCD_ID;
+ radeon_i2c_add(rdev, &ddc_i2c, "LCD");
break;
default:
ddc_i2c.valid = false;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 05:07:28 +0100