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drm/amdgpu: move i2c bus lock out of ras structure

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It's not really ras related.  It's just a lock for the
bus in general.  This removes the ras dependency from
the smu i2c bus.

Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-07-17 09:25:38 -04:00
parent 9cb268215d
commit 84dd1f698e
3 changed files with 4 additions and 8 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
View File

@ -425,6 +425,7 @@ struct amdgpu_pm {
u32 default_sclk;
u32 default_mclk;
struct amdgpu_i2c_chan *i2c_bus;
bool bus_locked;
/* internal thermal controller on rv6xx+ */
enum amdgpu_int_thermal_type int_thermal_type;
struct device *int_hwmon_dev;

1
drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
View File

@ -47,7 +47,6 @@ struct amdgpu_ras_eeprom_control {
uint32_t next_addr;
unsigned int num_recs;
struct mutex tbl_mutex;
bool bus_locked;
uint32_t tbl_byte_sum;
uint16_t i2c_address; // 8-bit represented address
};

10
drivers/gpu/drm/amd/amdgpu/smu_v11_0_i2c.c
View File

@ -32,7 +32,6 @@
#include "amdgpu_amdkfd.h"
#include <linux/i2c.h>
#include <linux/pci.h>
#include "amdgpu_ras.h"
/* error codes */
#define I2C_OK 0
@ -592,14 +591,13 @@ static uint32_t smu_v11_0_i2c_eeprom_write_data(struct i2c_adapter *control,
static void lock_bus(struct i2c_adapter *i2c, unsigned int flags)
{
struct amdgpu_device *adev = to_amdgpu_device(i2c);
struct amdgpu_ras_eeprom_control *control = &adev->psp.ras.ras->eeprom_control;
if (!smu_v11_0_i2c_bus_lock(i2c)) {
DRM_ERROR("Failed to lock the bus from SMU");
return;
}
control->bus_locked = true;
adev->pm.bus_locked = true;
}
static int trylock_bus(struct i2c_adapter *i2c, unsigned int flags)
@ -611,14 +609,13 @@ static int trylock_bus(struct i2c_adapter *i2c, unsigned int flags)
static void unlock_bus(struct i2c_adapter *i2c, unsigned int flags)
{
struct amdgpu_device *adev = to_amdgpu_device(i2c);
struct amdgpu_ras_eeprom_control *control = &adev->psp.ras.ras->eeprom_control;
if (!smu_v11_0_i2c_bus_unlock(i2c)) {
DRM_ERROR("Failed to unlock the bus from SMU");
return;
}
control->bus_locked = false;
adev->pm.bus_locked = false;
}
static const struct i2c_lock_operations smu_v11_0_i2c_i2c_lock_ops = {
@ -632,9 +629,8 @@ static int smu_v11_0_i2c_eeprom_i2c_xfer(struct i2c_adapter *i2c_adap,
{
int i, ret;
struct amdgpu_device *adev = to_amdgpu_device(i2c_adap);
struct amdgpu_ras_eeprom_control *control = &adev->psp.ras.ras->eeprom_control;
if (!control->bus_locked) {
if (!adev->pm.bus_locked) {
DRM_ERROR("I2C bus unlocked, stopping transaction!");
return -EIO;
}