[PATCH] drm/amdgpu: Prefer dev_* variant over printk in amdgpu_atpx_handler.c

[Alex Deucher]

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

On Tue, Jul 25, 2023 at 9:16 AM Srinivasan Shanmugam
<srinivasan.shanmugam at amd.com> wrote:
>
> Changed from printk to dev_* variants so that
> we get better debug info when there are multiple GPUs
> in the system.
>
> Fixes other style issue:
>
> ERROR: open brace '{' following function definitions go on the next line
> WARNING: printk() should include KERN_<LEVEL> facility level
>
> Cc: Christian König <christian.koenig at amd.com>
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam at amd.com>
> ---
>  .../gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c  | 35 ++++++++++++-------
>  1 file changed, 23 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
> index d6d986be906a..4eddca672f3e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
> @@ -74,24 +74,29 @@ struct atpx_mux {
>         u16 mux;
>  } __packed;
>
> -bool amdgpu_has_atpx(void) {
> +bool amdgpu_has_atpx(void)
> +{
>         return amdgpu_atpx_priv.atpx_detected;
>  }
>
> -bool amdgpu_has_atpx_dgpu_power_cntl(void) {
> +bool amdgpu_has_atpx_dgpu_power_cntl(void)
> +{
>         return amdgpu_atpx_priv.atpx.functions.power_cntl;
>  }
>
> -bool amdgpu_is_atpx_hybrid(void) {
> +bool amdgpu_is_atpx_hybrid(void)
> +{
>         return amdgpu_atpx_priv.atpx.is_hybrid;
>  }
>
> -bool amdgpu_atpx_dgpu_req_power_for_displays(void) {
> +bool amdgpu_atpx_dgpu_req_power_for_displays(void)
> +{
>         return amdgpu_atpx_priv.atpx.dgpu_req_power_for_displays;
>  }
>
>  #if defined(CONFIG_ACPI)
> -void *amdgpu_atpx_get_dhandle(void) {
> +void *amdgpu_atpx_get_dhandle(void)
> +{
>         return amdgpu_atpx_priv.dhandle;
>  }
>  #endif
> @@ -113,6 +118,8 @@ static union acpi_object *amdgpu_atpx_call(acpi_handle handle, int function,
>         union acpi_object atpx_arg_elements[2];
>         struct acpi_object_list atpx_arg;
>         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
> +       struct acpi_device *adev = container_of(handle, struct acpi_device, handle);
> +       struct device *dev = &adev->dev;
>
>         atpx_arg.count = 2;
>         atpx_arg.pointer = &atpx_arg_elements[0];
> @@ -134,8 +141,8 @@ static union acpi_object *amdgpu_atpx_call(acpi_handle handle, int function,
>
>         /* Fail only if calling the method fails and ATPX is supported */
>         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
> -               printk("failed to evaluate ATPX got %s\n",
> -                      acpi_format_exception(status));
> +               dev_err(dev, "failed to evaluate ATPX got %s\n",
> +                       acpi_format_exception(status));
>                 kfree(buffer.pointer);
>                 return NULL;
>         }
> @@ -176,6 +183,8 @@ static void amdgpu_atpx_parse_functions(struct amdgpu_atpx_functions *f, u32 mas
>  static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx)
>  {
>         u32 valid_bits = 0;
> +       struct acpi_device *adev = container_of(atpx->handle, struct acpi_device, handle);
> +       struct device *dev = &adev->dev;
>
>         if (atpx->functions.px_params) {
>                 union acpi_object *info;
> @@ -190,7 +199,7 @@ static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx)
>
>                 size = *(u16 *) info->buffer.pointer;
>                 if (size < 10) {
> -                       printk("ATPX buffer is too small: %zu\n", size);
> +                       dev_err(dev, "ATPX buffer is too small: %zu\n", size);
>                         kfree(info);
>                         return -EINVAL;
>                 }
> @@ -223,11 +232,11 @@ static int amdgpu_atpx_validate(struct amdgpu_atpx *atpx)
>         atpx->is_hybrid = false;
>         if (valid_bits & ATPX_MS_HYBRID_GFX_SUPPORTED) {
>                 if (amdgpu_atpx_priv.quirks & AMDGPU_PX_QUIRK_FORCE_ATPX) {
> -                       printk("ATPX Hybrid Graphics, forcing to ATPX\n");
> +                       dev_info(dev, "ATPX Hybrid Graphics, forcing to ATPX\n");
>                         atpx->functions.power_cntl = true;
>                         atpx->is_hybrid = false;
>                 } else {
> -                       printk("ATPX Hybrid Graphics\n");
> +                       dev_info(dev, "ATPX Hybrid Graphics\n");
>                         /*
>                          * Disable legacy PM methods only when pcie port PM is usable,
>                          * otherwise the device might fail to power off or power on.
> @@ -260,6 +269,8 @@ static int amdgpu_atpx_verify_interface(struct amdgpu_atpx *atpx)
>         struct atpx_verify_interface output;
>         size_t size;
>         int err = 0;
> +       struct acpi_device *adev = container_of(atpx->handle, struct acpi_device, handle);
> +       struct device *dev = &adev->dev;
>
>         info = amdgpu_atpx_call(atpx->handle, ATPX_FUNCTION_VERIFY_INTERFACE, NULL);
>         if (!info)
> @@ -278,8 +289,8 @@ static int amdgpu_atpx_verify_interface(struct amdgpu_atpx *atpx)
>         memcpy(&output, info->buffer.pointer, size);
>
>         /* TODO: check version? */
> -       printk("ATPX version %u, functions 0x%08x\n",
> -              output.version, output.function_bits);
> +       dev_info(dev, "ATPX version %u, functions 0x%08x\n",
> +                output.version, output.function_bits);
>
>         amdgpu_atpx_parse_functions(&atpx->functions, output.function_bits);
>
> --
> 2.25.1
>