diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/phy/dsi_phy.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 83 |
1 files changed, 69 insertions, 14 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 6ca6bfd4809b..8c65ef6968ca 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -5,6 +5,7 @@ #include <linux/clk-provider.h> #include <linux/platform_device.h> +#include <dt-bindings/phy/phy.h> #include "dsi_phy.h" @@ -461,6 +462,51 @@ int msm_dsi_dphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing, return 0; } +int msm_dsi_cphy_timing_calc_v4(struct msm_dsi_dphy_timing *timing, + struct msm_dsi_phy_clk_request *clk_req) +{ + const unsigned long bit_rate = clk_req->bitclk_rate; + const unsigned long esc_rate = clk_req->escclk_rate; + s32 ui, ui_x7; + s32 tmax, tmin; + s32 coeff = 1000; /* Precision, should avoid overflow */ + s32 temp; + + if (!bit_rate || !esc_rate) + return -EINVAL; + + ui = mult_frac(NSEC_PER_MSEC, coeff, bit_rate / 1000); + ui_x7 = ui * 7; + + temp = S_DIV_ROUND_UP(38 * coeff, ui_x7); + tmin = max_t(s32, temp, 0); + temp = (95 * coeff) / ui_x7; + tmax = max_t(s32, temp, 0); + timing->clk_prepare = linear_inter(tmax, tmin, 50, 0, false); + + tmin = DIV_ROUND_UP(50 * coeff, ui_x7); + tmax = 255; + timing->hs_rqst = linear_inter(tmax, tmin, 1, 0, false); + + tmin = DIV_ROUND_UP(100 * coeff, ui_x7) - 1; + tmax = 255; + timing->hs_exit = linear_inter(tmax, tmin, 10, 0, false); + + tmin = 1; + tmax = 32; + timing->shared_timings.clk_post = linear_inter(tmax, tmin, 80, 0, false); + + tmin = min_t(s32, 64, S_DIV_ROUND_UP(262 * coeff, ui_x7) - 1); + tmax = 64; + timing->shared_timings.clk_pre = linear_inter(tmax, tmin, 20, 0, false); + + DBG("%d, %d, %d, %d, %d", + timing->shared_timings.clk_pre, timing->shared_timings.clk_post, + timing->clk_prepare, timing->hs_exit, timing->hs_rqst); + + return 0; +} + static int dsi_phy_regulator_init(struct msm_dsi_phy *phy) { struct regulator_bulk_data *s = phy->supplies; @@ -593,6 +639,8 @@ static const struct of_device_id dsi_phy_dt_match[] = { .data = &dsi_phy_7nm_cfgs }, { .compatible = "qcom,dsi-phy-7nm-8150", .data = &dsi_phy_7nm_8150_cfgs }, + { .compatible = "qcom,sc7280-dsi-phy-7nm", + .data = &dsi_phy_7nm_7280_cfgs }, #endif {} }; @@ -625,17 +673,13 @@ static int dsi_phy_driver_probe(struct platform_device *pdev) { struct msm_dsi_phy *phy; struct device *dev = &pdev->dev; - const struct of_device_id *match; + u32 phy_type; int ret; phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); if (!phy) return -ENOMEM; - match = of_match_node(dsi_phy_dt_match, dev->of_node); - if (!match) - return -ENODEV; - phy->provided_clocks = devm_kzalloc(dev, struct_size(phy->provided_clocks, hws, NUM_PROVIDED_CLKS), GFP_KERNEL); @@ -644,7 +688,10 @@ static int dsi_phy_driver_probe(struct platform_device *pdev) phy->provided_clocks->num = NUM_PROVIDED_CLKS; - phy->cfg = match->data; + phy->cfg = of_device_get_match_data(&pdev->dev); + if (!phy->cfg) + return -ENODEV; + phy->pdev = pdev; phy->id = dsi_phy_get_id(phy); @@ -657,6 +704,8 @@ static int dsi_phy_driver_probe(struct platform_device *pdev) phy->regulator_ldo_mode = of_property_read_bool(dev->of_node, "qcom,dsi-phy-regulator-ldo-mode"); + if (!of_property_read_u32(dev->of_node, "phy-type", &phy_type)) + phy->cphy_mode = (phy_type == PHY_TYPE_CPHY); phy->base = msm_ioremap_size(pdev, "dsi_phy", "DSI_PHY", &phy->base_size); if (IS_ERR(phy->base)) { @@ -754,7 +803,8 @@ void __exit msm_dsi_phy_driver_unregister(void) } int msm_dsi_phy_enable(struct msm_dsi_phy *phy, - struct msm_dsi_phy_clk_request *clk_req) + struct msm_dsi_phy_clk_request *clk_req, + struct msm_dsi_phy_shared_timings *shared_timings) { struct device *dev = &phy->pdev->dev; int ret; @@ -782,6 +832,9 @@ int msm_dsi_phy_enable(struct msm_dsi_phy *phy, goto phy_en_fail; } + memcpy(shared_timings, &phy->timing.shared_timings, + sizeof(*shared_timings)); + /* * Resetting DSI PHY silently changes its PLL registers to reset status, * which will confuse clock driver and result in wrong output rate of @@ -821,13 +874,6 @@ void msm_dsi_phy_disable(struct msm_dsi_phy *phy) dsi_phy_disable_resource(phy); } -void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy, - struct msm_dsi_phy_shared_timings *shared_timings) -{ - memcpy(shared_timings, &phy->timing.shared_timings, - sizeof(*shared_timings)); -} - void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, enum msm_dsi_phy_usecase uc) { @@ -835,6 +881,15 @@ void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, phy->usecase = uc; } +/* Returns true if we have to clear DSI_LANE_CTRL.HS_REQ_SEL_PHY */ +bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable) +{ + if (!phy || !phy->cfg->ops.set_continuous_clock) + return false; + + 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) { |