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drm/i915/icl: Enable DSI IO power 

This patch configures mode of operation for DSI
and enable DDI IO power by configuring power well.

v2: Use for_each_dsi_port() for power get (Jani N)

Signed-off-by: Madhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1530798591-2077-5-git-send-email-madhav.chauhan@intel.com
This commit is contained in:
Madhav Chauhan 2018-07-05 19:19:35 +05:30 committed by Jani Nikula
parent 21652f3b0d
commit b1cb21a5f1
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/i915/icl_dsi.c
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@ -54,11 +54,34 @@ static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder)
}
}
static void gen11_dsi_enable_io_power(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;
u32 tmp;
for_each_dsi_port(port, intel_dsi->ports) {
tmp = I915_READ(ICL_DSI_IO_MODECTL(port));
tmp |= COMBO_PHY_MODE_DSI;
I915_WRITE(ICL_DSI_IO_MODECTL(port), tmp);
}
for_each_dsi_port(port, intel_dsi->ports) {
intel_display_power_get(dev_priv, port == PORT_A ?
POWER_DOMAIN_PORT_DDI_A_IO :
POWER_DOMAIN_PORT_DDI_B_IO);
}
}
static void __attribute__((unused))
gen11_dsi_pre_enable(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
/* step2: enable IO power */
gen11_dsi_enable_io_power(encoder);
/* step3: enable DSI PLL */
gen11_dsi_program_esc_clk_div(encoder);
}