[PATCH 08/16] drm/i915/guc/slpc: Add methods to set min/max frequency

[kernel test robot]

Hi Vinay,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]
[cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.13 next-20210709]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Vinay-Belgaumkar/Enable-GuC-based-power-management-features/20210710-092520
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/ce93ba218ad070e0b1ae6f9823820fb4d2e14a8b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Vinay-Belgaumkar/Enable-GuC-based-power-management-features/20210710-092520
        git checkout ce93ba218ad070e0b1ae6f9823820fb4d2e14a8b
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:258: warning: expecting prototype for intel_guc_slpc_max_freq_set(). Prototype was for intel_guc_slpc_set_max_freq() instead
>> drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c:292: warning: expecting prototype for intel_guc_slpc_min_freq_set(). Prototype was for intel_guc_slpc_set_min_freq() instead


vim +258 drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c

   246	
   247	/**
   248	 * intel_guc_slpc_max_freq_set() - Set max frequency limit for SLPC.
   249	 * @slpc: pointer to intel_guc_slpc.
   250	 * @val: encoded frequency
   251	 *
   252	 * This function will invoke GuC SLPC action to update the max frequency
   253	 * limit for slice and unslice.
   254	 *
   255	 * Return: 0 on success, non-zero error code on failure.
   256	 */
   257	int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val)
 > 258	{
   259		int ret;
   260		struct drm_i915_private *i915 = slpc_to_i915(slpc);
   261		intel_wakeref_t wakeref;
   262	
   263		wakeref = intel_runtime_pm_get(&i915->runtime_pm);
   264	
   265		ret = slpc_set_param(slpc,
   266			       SLPC_PARAM_GLOBAL_MAX_GT_UNSLICE_FREQ_MHZ,
   267			       val);
   268	
   269		if (ret) {
   270			drm_err(&i915->drm,
   271				"Set max frequency unslice returned %d", ret);
   272			ret = -EIO;
   273			goto done;
   274		}
   275	
   276	done:
   277		intel_runtime_pm_put(&i915->runtime_pm, wakeref);
   278		return ret;
   279	}
   280	
   281	/**
   282	 * intel_guc_slpc_min_freq_set() - Set min frequency limit for SLPC.
   283	 * @slpc: pointer to intel_guc_slpc.
   284	 * @val: encoded frequency
   285	 *
   286	 * This function will invoke GuC SLPC action to update the min frequency
   287	 * limit.
   288	 *
   289	 * Return: 0 on success, non-zero error code on failure.
   290	 */
   291	int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val)
 > 292	{
   293		int ret;
   294		struct intel_guc *guc = slpc_to_guc(slpc);
   295		struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
   296		intel_wakeref_t wakeref;
   297	
   298		wakeref = intel_runtime_pm_get(&i915->runtime_pm);
   299	
   300		ret = slpc_set_param(slpc,
   301			       SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ,
   302			       val);
   303		if (ret) {
   304			drm_err(&i915->drm,
   305				"Set min frequency for unslice returned %d", ret);
   306			ret = -EIO;
   307			goto done;
   308		}
   309	
   310	done:
   311		intel_runtime_pm_put(&i915->runtime_pm, wakeref);
   312		return ret;
   313	}
   314	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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