Unlike previous generations, 7nm PHYs are required to collaborate with the host for conitnuos clock mode. Add changes neccessary to enable continuous clock mode in the 7nm DSI PHYs.
Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org --- drivers/gpu/drm/msm/dsi/dsi.h | 4 +++- drivers/gpu/drm/msm/dsi/dsi.xml.h | 1 + drivers/gpu/drm/msm/dsi/dsi_host.c | 12 ++++++++---- drivers/gpu/drm/msm/dsi/dsi_manager.c | 4 ++-- drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 15 +++++++++++++++ drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 2 ++ drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 17 +++++++++++++++++ 7 files changed, 48 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 7abfeab08165..c4e7cace120c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -108,7 +108,7 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host); int msm_dsi_host_disable(struct mipi_dsi_host *host); int msm_dsi_host_power_on(struct mipi_dsi_host *host, struct msm_dsi_phy_shared_timings *phy_shared_timings, - bool is_dual_dsi); + bool is_dual_dsi, struct msm_dsi_phy *phy); int msm_dsi_host_power_off(struct mipi_dsi_host *host); int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, const struct drm_display_mode *mode); @@ -173,6 +173,8 @@ int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy, struct clk **byte_clk_provider, struct clk **pixel_clk_provider); void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy); int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy); +bool msm_dsi_phy_needs_hs_phy_sel(struct msm_dsi_phy *phy); +void msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable);
#endif /* __DSI_CONNECTOR_H__ */
diff --git a/drivers/gpu/drm/msm/dsi/dsi.xml.h b/drivers/gpu/drm/msm/dsi/dsi.xml.h index 50eb4d1b8fdd..b1b668ff7e10 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.xml.h +++ b/drivers/gpu/drm/msm/dsi/dsi.xml.h @@ -511,6 +511,7 @@ static inline uint32_t DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(uint32_t val)
#define REG_DSI_LANE_CTRL 0x000000a8 #define DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST 0x10000000 +#define DSI_LANE_CTRL_HS_REQ_SEL_PHY 0x01000000
#define REG_DSI_LANE_SWAP_CTRL 0x000000ac #define DSI_LANE_SWAP_CTRL_DLN_SWAP_SEL__MASK 0x00000007 diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 41e1d0f7ab6e..4507c16c9385 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -835,7 +835,7 @@ static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt( }
static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable, - struct msm_dsi_phy_shared_timings *phy_shared_timings) + struct msm_dsi_phy_shared_timings *phy_shared_timings, struct msm_dsi_phy *phy) { u32 flags = msm_host->mode_flags; enum mipi_dsi_pixel_format mipi_fmt = msm_host->format; @@ -930,8 +930,12 @@ static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)) { lane_ctrl = dsi_read(msm_host, REG_DSI_LANE_CTRL); + if (msm_dsi_phy_needs_hs_phy_sel(phy)) + lane_ctrl |= DSI_LANE_CTRL_HS_REQ_SEL_PHY; dsi_write(msm_host, REG_DSI_LANE_CTRL, lane_ctrl | DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST); + if (msm_dsi_phy_needs_hs_phy_sel(phy)) + msm_dsi_phy_set_continuous_clock(phy, enable); }
data |= DSI_CTRL_ENABLE; @@ -2360,7 +2364,7 @@ static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable)
int msm_dsi_host_power_on(struct mipi_dsi_host *host, struct msm_dsi_phy_shared_timings *phy_shared_timings, - bool is_dual_dsi) + bool is_dual_dsi, struct msm_dsi_phy *phy) { struct msm_dsi_host *msm_host = to_msm_dsi_host(host); const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; @@ -2400,7 +2404,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
dsi_timing_setup(msm_host, is_dual_dsi); dsi_sw_reset(msm_host); - dsi_ctrl_config(msm_host, true, phy_shared_timings); + dsi_ctrl_config(msm_host, true, phy_shared_timings, phy);
if (msm_host->disp_en_gpio) gpiod_set_value(msm_host->disp_en_gpio, 1); @@ -2431,7 +2435,7 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *host) goto unlock_ret; }
- dsi_ctrl_config(msm_host, false, NULL); + dsi_ctrl_config(msm_host, false, NULL, NULL);
if (msm_host->disp_en_gpio) gpiod_set_value(msm_host->disp_en_gpio, 0); diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index e138a0c16085..082a20565886 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -382,7 +382,7 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) if (is_dual_dsi && !IS_MASTER_DSI_LINK(id)) return;
- ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_dual_dsi); + ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_dual_dsi, msm_dsi->phy); if (ret) { pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); goto host_on_fail; @@ -390,7 +390,7 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge)
if (is_dual_dsi && msm_dsi1) { ret = msm_dsi_host_power_on(msm_dsi1->host, - &phy_shared_timings[DSI_1], is_dual_dsi); + &phy_shared_timings[DSI_1], is_dual_dsi, msm_dsi->phy); if (ret) { pr_err("%s: power on host1 failed, %d\n", __func__, ret); diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index ccbd19f7d9cf..c2c7a46463ac 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -851,6 +851,21 @@ void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, phy->usecase = uc; }
+bool msm_dsi_phy_needs_hs_phy_sel(struct msm_dsi_phy *phy) +{ + if (!phy) + return false; + return phy->cfg->needs_continuous_clock; +} + +void msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable) +{ + if (!phy || !phy->cfg->ops.set_continuous_clock) + return; + + phy->cfg->ops.set_continuous_clock(phy, enable); +} + int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy, struct clk **byte_clk_provider, struct clk **pixel_clk_provider) { diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h index 94a77ac364d3..16d974f4d536 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h @@ -24,6 +24,7 @@ struct msm_dsi_phy_ops { void (*disable)(struct msm_dsi_phy *phy); void (*save_pll_state)(struct msm_dsi_phy *phy); int (*restore_pll_state)(struct msm_dsi_phy *phy); + void (*set_continuous_clock)(struct msm_dsi_phy *phy, bool enable); };
struct msm_dsi_phy_cfg { @@ -38,6 +39,7 @@ struct msm_dsi_phy_cfg { const int quirks; bool has_phy_regulator; bool has_phy_lane; + bool needs_continuous_clock; };
extern const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c index e76ce40a12ab..771fb31eb607 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -930,6 +930,19 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, return 0; }
+static void dsi_7nm_set_continuous_clock(struct msm_dsi_phy *phy, bool enable) +{ + void __iomem *base = phy->base; + u32 data; + + data = dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL1); + if (enable) + data |= BIT(5) | BIT(6); + else + data &= ~(BIT(5) | BIT(6)); + dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL1, data); +} + static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy) { void __iomem *base = phy->base; @@ -970,12 +983,14 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs = { .pll_init = dsi_pll_7nm_init, .save_pll_state = dsi_7nm_pll_save_state, .restore_pll_state = dsi_7nm_pll_restore_state, + .set_continuous_clock = dsi_7nm_set_continuous_clock, }, .min_pll_rate = 600000000UL, .max_pll_rate = (5000000000ULL < ULONG_MAX) ? 5000000000ULL : ULONG_MAX, .io_start = { 0xae94400, 0xae96400 }, .num_dsi_phy = 2, .quirks = DSI_PHY_7NM_QUIRK_V4_1, + .needs_continuous_clock = true, };
const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = { @@ -992,9 +1007,11 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = { .pll_init = dsi_pll_7nm_init, .save_pll_state = dsi_7nm_pll_save_state, .restore_pll_state = dsi_7nm_pll_restore_state, + .set_continuous_clock = dsi_7nm_set_continuous_clock, }, .min_pll_rate = 1000000000UL, .max_pll_rate = 3500000000UL, .io_start = { 0xae94400, 0xae96400 }, .num_dsi_phy = 2, + .needs_continuous_clock = true, };
On 2021-06-02 07:43, Dmitry Baryshkov wrote:
cant we just check if phy->cfg->ops.set_continuous_clock is set and call this?
we can just use set_continuous_clock check to detect the new phy versions, do we need another variable needs_continuous_clock?
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Dmitry Baryshkov