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drm/i915/dsi: use afe_clk() instead of intel_dsi_bitrate() 

We'll be expanding afe_clk() to take DSC into account. Switch to using
it where DSC matters. Which is really everywhere that
intel_dsi_bitrate() is currently used in ICL DSI code.

The functional difference is that we round the result closest instead of
down.

Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b6c52b320daa8aaa0d79618ce714170f8f04ff67.1575974743.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2019-12-10 12:50:55 +02:00
parent 54ed6902ca
commit adf1bd3dfb
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/i915/display/icl_dsi.c
View File

@ -539,7 +539,7 @@ static void gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder)
* leave all fields at HW default values.
*/
if (IS_GEN(dev_priv, 11)) {
if (intel_dsi_bitrate(intel_dsi) <= 800000) {
if (afe_clk(encoder) <= 800000) {
for_each_dsi_port(port, intel_dsi->ports) {
tmp = I915_READ(DPHY_TA_TIMING_PARAM(port));
tmp &= ~TA_SURE_MASK;
@ -649,7 +649,7 @@ gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
tmp |= EOTP_DISABLED;
/* enable link calibration if freq > 1.5Gbps */
if (intel_dsi_bitrate(intel_dsi) >= 1500 * 1000) {
if (afe_clk(encoder) >= 1500 * 1000) {
tmp &= ~LINK_CALIBRATION_MASK;
tmp |= CALIBRATION_ENABLED_INITIAL_ONLY;
}
@ -930,7 +930,7 @@ static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder)
* TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate
* ESCAPE_CLK_COUNT = TIME_NS/ESC_CLK_NS
*/
divisor = intel_dsi_tlpx_ns(intel_dsi) * intel_dsi_bitrate(intel_dsi) * 1000;
divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder) * 1000;
mul = 8 * 1000000;
hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul,
divisor);
@ -1300,7 +1300,7 @@ static int gen11_dsi_compute_config(struct intel_encoder *encoder,
pipe_config->pipe_bpp = 18;
pipe_config->clock_set = true;
pipe_config->port_clock = intel_dsi_bitrate(intel_dsi) / 5;
pipe_config->port_clock = afe_clk(encoder) / 5;
return 0;
}