From: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Also generilize the code to accept and translate to
HW bits any I2C relvent flags both for read and write.
Cc: Jean Delvare <jdelvare@xxxxxxx>
Cc: Alexander Deucher <Alexander.Deucher@xxxxxxx>
Cc: Andrey Grodzovsky <Andrey.Grodzovsky@xxxxxxx>
Cc: Lijo Lazar <Lijo.Lazar@xxxxxxx>
Cc: Stanley Yang <Stanley.Yang@xxxxxxx>
Cc: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Signed-off-by: Luben Tuikov <luben.tuikov@xxxxxxx>
Reviewed-by: Luben Tuikov <luben.tuikov@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c b/drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c
index 3193d566f4f87e..5a90d9351b22eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c
+++ b/drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c
@@ -530,13 +530,11 @@ static bool smu_v11_0_i2c_bus_unlock(struct i2c_adapter *control)
/***************************** I2C GLUE ****************************/
static uint32_t smu_v11_0_i2c_read_data(struct i2c_adapter *control,
- struct i2c_msg *msg)
+ struct i2c_msg *msg, uint32_t i2c_flag)
{
- uint32_t ret = 0;
+ uint32_t ret;
- /* Now read data starting with that address */
- ret = smu_v11_0_i2c_receive(control, msg->addr, msg->buf, msg->len,
- I2C_RESTART);
+ ret = smu_v11_0_i2c_receive(control, msg->addr, msg->buf, msg->len, i2c_flag);
if (ret != I2C_OK)
DRM_ERROR("ReadData() - I2C error occurred :%x", ret);
@@ -545,12 +543,11 @@ static uint32_t smu_v11_0_i2c_read_data(struct i2c_adapter *control,
}
static uint32_t smu_v11_0_i2c_write_data(struct i2c_adapter *control,
- struct i2c_msg *msg)
+ struct i2c_msg *msg, uint32_t i2c_flag)
{
uint32_t ret;
- /* Send I2C_NO_STOP unless requested to stop. */
- ret = smu_v11_0_i2c_transmit(control, msg->addr, msg->buf, msg->len, ((msg->flags & I2C_M_STOP) ? 0 : I2C_NO_STOP));
+ ret = smu_v11_0_i2c_transmit(control, msg->addr, msg->buf, msg->len, i2c_flag);
if (ret != I2C_OK)
DRM_ERROR("WriteI2CData() - I2C error occurred :%x", ret);
@@ -601,12 +598,17 @@ static int smu_v11_0_i2c_xfer(struct i2c_adapter *i2c_adap,
smu_v11_0_i2c_init(i2c_adap);
for (i = 0; i < num; i++) {
+ uint32_t i2c_flag = ((msgs[i].flags & I2C_M_NOSTART) ? 0 : I2C_RESTART) ||
+ (((msgs[i].flags & I2C_M_STOP) ? 0 : I2C_NO_STOP));
+
if (msgs[i].flags & I2C_M_RD)
ret = smu_v11_0_i2c_read_data(i2c_adap,
- msgs + i);
+ msgs + i,
+ i2c_flag);
else
ret = smu_v11_0_i2c_write_data(i2c_adap,
- msgs + i);
+ msgs + i,
+ i2c_flag);
if (ret != I2C_OK) {
num = -EIO;
--
2.32.0
_______________________________________________
amd-gfx mailing list
amd-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
