This patch implements verify_crc_source callback function introduced earlier in this series.

Signed-off-by: Mahesh Kumar mahesh1.kumar@intel.com Cc: dri-devel@lists.freedesktop.org Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com --- drivers/gpu/drm/i915/intel_display.c | 1 + drivers/gpu/drm/i915/intel_drv.h | 3 + drivers/gpu/drm/i915/intel_pipe_crc.c | 108 ++++++++++++++++++++++++++++++++++ 3 files changed, 112 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8f3199b06d1f..07c1eff77e7d 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12895,6 +12895,7 @@ static const struct drm_crtc_funcs intel_crtc_funcs = { .atomic_duplicate_state = intel_crtc_duplicate_state, .atomic_destroy_state = intel_crtc_destroy_state, .set_crc_source = intel_crtc_set_crc_source, + .verify_crc_source = intel_crtc_verify_crc_source, };

struct wait_rps_boost { diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 61e715ddd0d5..eaea10a7a600 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -2157,10 +2157,13 @@ void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon); #ifdef CONFIG_DEBUG_FS int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name, size_t *values_cnt); +int intel_crtc_verify_crc_source(struct drm_crtc *crtc, + const char *source_name, size_t *values_cnt); void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc); void intel_crtc_enable_pipe_crc(struct intel_crtc *crtc); #else #define intel_crtc_set_crc_source NULL +#define intel_crtc_verify_crc_source NULL static inline void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc) { } diff --git a/drivers/gpu/drm/i915/intel_pipe_crc.c b/drivers/gpu/drm/i915/intel_pipe_crc.c index 849e1b69ba73..03025c50cb38 100644 --- a/drivers/gpu/drm/i915/intel_pipe_crc.c +++ b/drivers/gpu/drm/i915/intel_pipe_crc.c @@ -468,6 +468,114 @@ void intel_display_crc_init(struct drm_i915_private *dev_priv) } }

+static int i8xx_crc_source_valid(struct drm_i915_private *dev_priv, + const enum intel_pipe_crc_source source) +{ + switch (source) { + case INTEL_PIPE_CRC_SOURCE_PIPE: + case INTEL_PIPE_CRC_SOURCE_NONE: + return 0; + default: + return -EINVAL; + } +} + +static int i9xx_crc_source_valid(struct drm_i915_private *dev_priv, + const enum intel_pipe_crc_source source) +{ + switch (source) { + case INTEL_PIPE_CRC_SOURCE_PIPE: + case INTEL_PIPE_CRC_SOURCE_TV: + case INTEL_PIPE_CRC_SOURCE_DP_B: + case INTEL_PIPE_CRC_SOURCE_DP_C: + case INTEL_PIPE_CRC_SOURCE_DP_D: + case INTEL_PIPE_CRC_SOURCE_NONE: + return 0; + default: + return -EINVAL; + } +} + +static int vlv_crc_source_valid(struct drm_i915_private *dev_priv, + const enum intel_pipe_crc_source source) +{ + switch (source) { + case INTEL_PIPE_CRC_SOURCE_PIPE: + case INTEL_PIPE_CRC_SOURCE_DP_B: + case INTEL_PIPE_CRC_SOURCE_DP_C: + case INTEL_PIPE_CRC_SOURCE_DP_D: + case INTEL_PIPE_CRC_SOURCE_NONE: + return 0; + default: + return -EINVAL; + } +} + +static int ilk_crc_source_valid(struct drm_i915_private *dev_priv, + const enum intel_pipe_crc_source source) +{ + switch (source) { + case INTEL_PIPE_CRC_SOURCE_PIPE: + case INTEL_PIPE_CRC_SOURCE_PLANE1: + case INTEL_PIPE_CRC_SOURCE_PLANE2: + case INTEL_PIPE_CRC_SOURCE_NONE: + return 0; + default: + return -EINVAL; + } +} + +static int ivb_crc_source_valid(struct drm_i915_private *dev_priv, + const enum intel_pipe_crc_source source) +{ + switch (source) { + case INTEL_PIPE_CRC_SOURCE_PIPE: + case INTEL_PIPE_CRC_SOURCE_PLANE1: + case INTEL_PIPE_CRC_SOURCE_PLANE2: + case INTEL_PIPE_CRC_SOURCE_PF: + case INTEL_PIPE_CRC_SOURCE_NONE: + return 0; + default: + return -EINVAL; + } +} + +static int +intel_is_valid_crc_source(struct drm_i915_private *dev_priv, + const enum intel_pipe_crc_source source) +{ + if (IS_GEN2(dev_priv)) + return i8xx_crc_source_valid(dev_priv, source); + else if (INTEL_GEN(dev_priv) < 5) + return i9xx_crc_source_valid(dev_priv, source); + else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) + return vlv_crc_source_valid(dev_priv, source); + else if (IS_GEN5(dev_priv) || IS_GEN6(dev_priv)) + return ilk_crc_source_valid(dev_priv, source); + else + return ivb_crc_source_valid(dev_priv, source); +} + +int intel_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name, + size_t *values_cnt) +{ + struct drm_i915_private *dev_priv = to_i915(crtc->dev); + enum intel_pipe_crc_source source; + + if (display_crc_ctl_parse_source(source_name, &source) < 0) { + DRM_DEBUG_DRIVER("unknown source %s\n", source_name); + return -EINVAL; + } + + if (source == INTEL_PIPE_CRC_SOURCE_AUTO || + intel_is_valid_crc_source(dev_priv, source) == 0) { + *values_cnt = 5; + return 0; + } + + return -EINVAL; +} + int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name, size_t *values_cnt) {