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disp: msm: dsi: avoid DSI PHY shutdown during idle

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Avoid shutting down DSI PHY and lanes before entering into
idle collapse.

Change-Id: I62fb40c2398e544b08b8cb8788ac2dc1143a82ce
Signed-off-by: Shashank Babu Chinta Venkata <quic_schintav@quicinc.com>
This commit is contained in:
Shashank Babu Chinta Venkata
2022-07-22 15:54:42 -07:00
parent cf264d1a93
commit d3d31ac418
4 changed files with 20 additions and 7 deletions
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3
msm/dsi/dsi_catalog.h
View File

@@ -312,7 +312,8 @@ void dsi_phy_hw_v5_0_dyn_refresh_pipe_delay(struct dsi_phy_hw *phy,
int dsi_phy_hw_v5_0_cache_phy_timings(struct dsi_phy_per_lane_cfgs *timings,
u32 *dst, u32 size);
void dsi_phy_hw_v5_0_phy_idle_off(struct dsi_phy_hw *phy);
void dsi_phy_hw_v5_0_phy_idle_off(struct dsi_phy_hw *phy,
struct dsi_phy_cfg *cfg);
void dsi_ctrl_hw_22_configure_cmddma_window(struct dsi_ctrl_hw *ctrl,
struct dsi_ctrl_cmd_dma_info *cmd,
u32 line_no, u32 window);

5
msm/dsi/dsi_phy.c
View File

@@ -1167,11 +1167,8 @@ int dsi_phy_idle_ctrl(struct msm_dsi_phy *phy, bool enable)
} else {
phy->dsi_phy_state = DSI_PHY_ENGINE_OFF;
if (phy->hw.ops.disable)
phy->hw.ops.disable(&phy->hw, &phy->cfg);
if (phy->hw.ops.phy_idle_off)
phy->hw.ops.phy_idle_off(&phy->hw);
phy->hw.ops.phy_idle_off(&phy->hw, &phy->cfg);
}
mutex_unlock(&phy->phy_lock);

4
msm/dsi/dsi_phy_hw.h
View File

@@ -291,8 +291,10 @@ struct dsi_phy_hw_ops {
/**
* phy_idle_off() - Disable PHY hardware when exiting idle screen
* @phy: Pointer to DSI PHY hardware object.
* @cfg: Per lane configurations for timing, strength and lane
* configurations.
*/
void (*phy_idle_off)(struct dsi_phy_hw *phy);
void (*phy_idle_off)(struct dsi_phy_hw *phy, struct dsi_phy_cfg *cfg);
/**
* calculate_timing_params() - calculates timing parameters.

15
msm/dsi/dsi_phy_hw_v5_0.c
View File

@@ -880,10 +880,23 @@ void dsi_phy_hw_v5_0_set_continuous_clk(struct dsi_phy_hw *phy, bool enable)
wmb(); /* make sure request is set */
}
void dsi_phy_hw_v5_0_phy_idle_off(struct dsi_phy_hw *phy)
void dsi_phy_hw_v5_0_phy_idle_off(struct dsi_phy_hw *phy,
struct dsi_phy_cfg *cfg)
{
if (dsi_phy_hw_v5_0_is_pll_on(phy))
DSI_PHY_WARN(phy, "Turning OFF PHY while PLL is on\n");
/* enable clamping of PADS */
DSI_W32(phy, DSIPHY_CMN_CTRL_4, 0x1);
DSI_W32(phy, DSIPHY_CMN_CTRL_3, 0x0);
wmb();
dsi_phy_hw_v5_0_config_lpcdrx(phy, cfg, false);
/* Turn off REFGEN Vote */
DSI_W32(phy, DSIPHY_CMN_GLBL_DIGTOP_SPARE10, 0x0);
/* make sure request is set */
wmb();
/* Delay to ensure HW removes vote*/
udelay(2);
}