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drm/i915: Compute DSI PLL parameters during .compute_config()

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Compute the DSI PLL parameters during .compute_config() rather than
.pre_pll_enable() so that we can fail gracefully if we can't find
suitable parameters.

In order to do that we need to store the DSI PLL parameters in
pipe_config.

v2: Handle BXT too

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460488478-18311-3-git-send-email-ville.syrjala@linux.intel.com
Tested-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä
2016-04-12 22:14:35 +03:00
parent cd2d34d9b6
commit 47eacbabcb
5 changed files with 114 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/i915/intel_dsi.h
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@@ -127,11 +127,15 @@ static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
}
bool intel_dsi_pll_is_enabled(struct drm_i915_private *dev_priv);
extern void intel_enable_dsi_pll(struct intel_encoder *encoder);
extern void intel_disable_dsi_pll(struct intel_encoder *encoder);
extern u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp);
extern void intel_dsi_reset_clocks(struct intel_encoder *encoder,
enum port port);
int intel_compute_dsi_pll(struct intel_encoder *encoder,
struct intel_crtc_state *config);
void intel_enable_dsi_pll(struct intel_encoder *encoder,
const struct intel_crtc_state *config);
void intel_disable_dsi_pll(struct intel_encoder *encoder);
u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp,
struct intel_crtc_state *config);
void intel_dsi_reset_clocks(struct intel_encoder *encoder,
enum port port);
struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);