diff options
| -rw-r--r-- | drivers/gpu/drm/i915/icl_dsi.c | 52 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi_vbt.c | 1 |
3 files changed, 54 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index ac22c74ae146..fd82f349ced9 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -685,6 +685,55 @@ static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) } } +static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + enum port port; + enum transcoder dsi_trans; + u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul; + + /* + * escape clock count calculation: + * BYTE_CLK_COUNT = TIME_NS/(8 * UI) + * UI (nsec) = (10^6)/Bitrate + * 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; + mul = 8 * 1000000; + hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul, + divisor); + lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor); + ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor); + + for_each_dsi_port(port, intel_dsi->ports) { + dsi_trans = dsi_port_to_transcoder(port); + + /* program hst_tx_timeout */ + tmp = I915_READ(DSI_HSTX_TO(dsi_trans)); + tmp &= ~HSTX_TIMEOUT_VALUE_MASK; + tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout); + I915_WRITE(DSI_HSTX_TO(dsi_trans), tmp); + + /* FIXME: DSI_CALIB_TO */ + + /* program lp_rx_host timeout */ + tmp = I915_READ(DSI_LPRX_HOST_TO(dsi_trans)); + tmp &= ~LPRX_TIMEOUT_VALUE_MASK; + tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout); + I915_WRITE(DSI_LPRX_HOST_TO(dsi_trans), tmp); + + /* FIXME: DSI_PWAIT_TO */ + + /* program turn around timeout */ + tmp = I915_READ(DSI_TA_TO(dsi_trans)); + tmp &= ~TA_TIMEOUT_VALUE_MASK; + tmp |= TA_TIMEOUT_VALUE(ta_timeout); + I915_WRITE(DSI_TA_TO(dsi_trans), tmp); + } +} + static void gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config) @@ -704,6 +753,9 @@ gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, /* setup D-PHY timings */ gen11_dsi_setup_dphy_timings(encoder); + /* step 4h: setup DSI protocol timeouts */ + gen11_dsi_setup_timeouts(encoder); + /* Step (4h, 4i, 4j, 4k): Configure transcoder */ gen11_dsi_configure_transcoder(encoder, pipe_config); } diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h index 10fd1582a8e2..f2a3ddedcc5d 100644 --- a/drivers/gpu/drm/i915/intel_dsi.h +++ b/drivers/gpu/drm/i915/intel_dsi.h @@ -95,6 +95,7 @@ struct intel_dsi { u16 lp_byte_clk; /* timeouts in byte clocks */ + u16 hs_tx_timeout; u16 lp_rx_timeout; u16 turn_arnd_val; u16 rst_timer_val; diff --git a/drivers/gpu/drm/i915/intel_dsi_vbt.c b/drivers/gpu/drm/i915/intel_dsi_vbt.c index cca071406c25..80bd56e96143 100644 --- a/drivers/gpu/drm/i915/intel_dsi_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_vbt.c @@ -799,6 +799,7 @@ bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id) intel_dsi->video_mode_format = mipi_config->video_transfer_mode; intel_dsi->escape_clk_div = mipi_config->byte_clk_sel; intel_dsi->lp_rx_timeout = mipi_config->lp_rx_timeout; + intel_dsi->hs_tx_timeout = mipi_config->hs_tx_timeout; intel_dsi->turn_arnd_val = mipi_config->turn_around_timeout; intel_dsi->rst_timer_val = mipi_config->device_reset_timer; intel_dsi->init_count = mipi_config->master_init_timer; |