xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/radeon/kms: clean up i2c

Browse Source 
- 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
Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/radeon/radeon_mode.h
View File

@@ -89,24 +89,38 @@ enum radeon_tv_std {
TV_STD_PAL_CN,
};
/* radeon gpio-based i2c
* 1. "mask" reg and bits
* grabs the gpio pins for software use
* 0=not held 1=held
* 2. "a" reg and bits
* output pin value
* 0=low 1=high
* 3. "en" reg and bits
* sets the pin direction
* 0=input 1=output
* 4. "y" reg and bits
* input pin value
* 0=low 1=high
*/
struct radeon_i2c_bus_rec {
bool valid;
uint32_t mask_clk_reg;
uint32_t mask_data_reg;
uint32_t a_clk_reg;
uint32_t a_data_reg;
uint32_t put_clk_reg;
uint32_t put_data_reg;
uint32_t get_clk_reg;
uint32_t get_data_reg;
uint32_t en_clk_reg;
uint32_t en_data_reg;
uint32_t y_clk_reg;
uint32_t y_data_reg;
uint32_t mask_clk_mask;
uint32_t mask_data_mask;
uint32_t put_clk_mask;
uint32_t put_data_mask;
uint32_t get_clk_mask;
uint32_t get_data_mask;
uint32_t a_clk_mask;
uint32_t a_data_mask;
uint32_t en_clk_mask;
uint32_t en_data_mask;
uint32_t y_clk_mask;
uint32_t y_data_mask;
};
struct radeon_tmds_pll {