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drm/radeon/kms: clean up i2c

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- Change reg/mask names to match what we use internally
and in the bios
- Clarify how i2c over gpio on radeon actually works

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2009-11-10 15:59:44 -05:00
committed by Dave Airlie
parent ab1e9ea08f
commit 9b9fe72488
5 changed files with 85 additions and 66 deletions
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56
drivers/gpu/drm/radeon/radeon_combios.c
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@@ -450,29 +450,29 @@ struct radeon_i2c_bus_rec combios_setup_i2c_bus(int ddc_line)
i2c.mask_data_mask = RADEON_GPIO_EN_0;
i2c.a_clk_mask = RADEON_GPIO_A_1;
i2c.a_data_mask = RADEON_GPIO_A_0;
i2c.put_clk_mask = RADEON_GPIO_EN_1;
i2c.put_data_mask = RADEON_GPIO_EN_0;
i2c.get_clk_mask = RADEON_GPIO_Y_1;
i2c.get_data_mask = RADEON_GPIO_Y_0;
i2c.en_clk_mask = RADEON_GPIO_EN_1;
i2c.en_data_mask = RADEON_GPIO_EN_0;
i2c.y_clk_mask = RADEON_GPIO_Y_1;
i2c.y_data_mask = RADEON_GPIO_Y_0;
if ((ddc_line == RADEON_LCD_GPIO_MASK) ||
(ddc_line == RADEON_MDGPIO_EN_REG)) {
i2c.mask_clk_reg = ddc_line;
i2c.mask_data_reg = ddc_line;
i2c.a_clk_reg = ddc_line;
i2c.a_data_reg = ddc_line;
i2c.put_clk_reg = ddc_line;
i2c.put_data_reg = ddc_line;
i2c.get_clk_reg = ddc_line + 4;
i2c.get_data_reg = ddc_line + 4;
i2c.en_clk_reg = ddc_line;
i2c.en_data_reg = ddc_line;
i2c.y_clk_reg = ddc_line + 4;
i2c.y_data_reg = ddc_line + 4;
} else {
i2c.mask_clk_reg = ddc_line;
i2c.mask_data_reg = ddc_line;
i2c.a_clk_reg = ddc_line;
i2c.a_data_reg = ddc_line;
i2c.put_clk_reg = ddc_line;
i2c.put_data_reg = ddc_line;
i2c.get_clk_reg = ddc_line;
i2c.get_data_reg = ddc_line;
i2c.en_clk_reg = ddc_line;
i2c.en_data_reg = ddc_line;
i2c.y_clk_reg = ddc_line;
i2c.y_data_reg = ddc_line;
}
if (ddc_line)
@@ -1567,18 +1567,18 @@ static bool radeon_apply_legacy_quirks(struct drm_device *dev,
ddc_i2c->mask_data_mask = 0x80;
ddc_i2c->a_clk_mask = (0x20 << 8);
ddc_i2c->a_data_mask = 0x80;
ddc_i2c->put_clk_mask = (0x20 << 8);
ddc_i2c->put_data_mask = 0x80;
ddc_i2c->get_clk_mask = (0x20 << 8);
ddc_i2c->get_data_mask = 0x80;
ddc_i2c->en_clk_mask = (0x20 << 8);
ddc_i2c->en_data_mask = 0x80;
ddc_i2c->y_clk_mask = (0x20 << 8);
ddc_i2c->y_data_mask = 0x80;
ddc_i2c->mask_clk_reg = RADEON_GPIOPAD_MASK;
ddc_i2c->mask_data_reg = RADEON_GPIOPAD_MASK;
ddc_i2c->a_clk_reg = RADEON_GPIOPAD_A;
ddc_i2c->a_data_reg = RADEON_GPIOPAD_A;
ddc_i2c->put_clk_reg = RADEON_GPIOPAD_EN;
ddc_i2c->put_data_reg = RADEON_GPIOPAD_EN;
ddc_i2c->get_clk_reg = RADEON_LCD_GPIO_Y_REG;
ddc_i2c->get_data_reg = RADEON_LCD_GPIO_Y_REG;
ddc_i2c->en_clk_reg = RADEON_GPIOPAD_EN;
ddc_i2c->en_data_reg = RADEON_GPIOPAD_EN;
ddc_i2c->y_clk_reg = RADEON_LCD_GPIO_Y_REG;
ddc_i2c->y_data_reg = RADEON_LCD_GPIO_Y_REG;
}
/* Certain IBM chipset RN50s have a BIOS reporting two VGAs,
@@ -1939,13 +1939,13 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.a_data_mask =
RBIOS32(lcd_ddc_info + 7);
ddc_i2c.put_clk_mask =
ddc_i2c.en_clk_mask =
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.put_data_mask =
ddc_i2c.en_data_mask =
RBIOS32(lcd_ddc_info + 7);
ddc_i2c.get_clk_mask =
ddc_i2c.y_clk_mask =
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.get_data_mask =
ddc_i2c.y_data_mask =
RBIOS32(lcd_ddc_info + 7);
break;
case DDC_GPIO:
@@ -1960,13 +1960,13 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.a_data_mask =
RBIOS32(lcd_ddc_info + 7);
ddc_i2c.put_clk_mask =
ddc_i2c.en_clk_mask =
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.put_data_mask =
ddc_i2c.en_data_mask =
RBIOS32(lcd_ddc_info + 7);
ddc_i2c.get_clk_mask =
ddc_i2c.y_clk_mask =
RBIOS32(lcd_ddc_info + 3);
ddc_i2c.get_data_mask =
ddc_i2c.y_data_mask =
RBIOS32(lcd_ddc_info + 7);
break;
default: