diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 16 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 34 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 32 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 81 |
5 files changed, 117 insertions, 67 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c index af2e30f3f842..ec486ff02c9b 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c @@ -444,21 +444,19 @@ static unsigned long dsi_pll_10nm_vco_recalc_rate(struct clk_hw *hw, return (unsigned long)vco_rate; } -static long dsi_pll_10nm_clk_round_rate(struct clk_hw *hw, - unsigned long rate, unsigned long *parent_rate) +static int dsi_pll_10nm_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct dsi_pll_10nm *pll_10nm = to_pll_10nm(hw); - if (rate < pll_10nm->phy->cfg->min_pll_rate) - return pll_10nm->phy->cfg->min_pll_rate; - else if (rate > pll_10nm->phy->cfg->max_pll_rate) - return pll_10nm->phy->cfg->max_pll_rate; - else - return rate; + req->rate = clamp_t(unsigned long, req->rate, + pll_10nm->phy->cfg->min_pll_rate, pll_10nm->phy->cfg->max_pll_rate); + + return 0; } static const struct clk_ops clk_ops_dsi_pll_10nm_vco = { - .round_rate = dsi_pll_10nm_clk_round_rate, + .determine_rate = dsi_pll_10nm_clk_determine_rate, .set_rate = dsi_pll_10nm_vco_set_rate, .recalc_rate = dsi_pll_10nm_vco_recalc_rate, .prepare = dsi_pll_10nm_vco_prepare, diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c index 3a1c8ece6657..fdefcbd9c284 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c @@ -578,21 +578,19 @@ static void dsi_pll_14nm_vco_unprepare(struct clk_hw *hw) pll_14nm->phy->pll_on = false; } -static long dsi_pll_14nm_clk_round_rate(struct clk_hw *hw, - unsigned long rate, unsigned long *parent_rate) +static int dsi_pll_14nm_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct dsi_pll_14nm *pll_14nm = to_pll_14nm(hw); - if (rate < pll_14nm->phy->cfg->min_pll_rate) - return pll_14nm->phy->cfg->min_pll_rate; - else if (rate > pll_14nm->phy->cfg->max_pll_rate) - return pll_14nm->phy->cfg->max_pll_rate; - else - return rate; + req->rate = clamp_t(unsigned long, req->rate, + pll_14nm->phy->cfg->min_pll_rate, pll_14nm->phy->cfg->max_pll_rate); + + return 0; } static const struct clk_ops clk_ops_dsi_pll_14nm_vco = { - .round_rate = dsi_pll_14nm_clk_round_rate, + .determine_rate = dsi_pll_14nm_clk_determine_rate, .set_rate = dsi_pll_14nm_vco_set_rate, .recalc_rate = dsi_pll_14nm_vco_recalc_rate, .prepare = dsi_pll_14nm_vco_prepare, @@ -622,18 +620,20 @@ static unsigned long dsi_pll_14nm_postdiv_recalc_rate(struct clk_hw *hw, postdiv->flags, width); } -static long dsi_pll_14nm_postdiv_round_rate(struct clk_hw *hw, - unsigned long rate, - unsigned long *prate) +static int dsi_pll_14nm_postdiv_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct dsi_pll_14nm_postdiv *postdiv = to_pll_14nm_postdiv(hw); struct dsi_pll_14nm *pll_14nm = postdiv->pll; - DBG("DSI%d PLL parent rate=%lu", pll_14nm->phy->id, rate); + DBG("DSI%d PLL parent rate=%lu", pll_14nm->phy->id, req->rate); - return divider_round_rate(hw, rate, prate, NULL, - postdiv->width, - postdiv->flags); + req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate, + NULL, + postdiv->width, + postdiv->flags); + + return 0; } static int dsi_pll_14nm_postdiv_set_rate(struct clk_hw *hw, unsigned long rate, @@ -680,7 +680,7 @@ static int dsi_pll_14nm_postdiv_set_rate(struct clk_hw *hw, unsigned long rate, static const struct clk_ops clk_ops_dsi_pll_14nm_postdiv = { .recalc_rate = dsi_pll_14nm_postdiv_recalc_rate, - .round_rate = dsi_pll_14nm_postdiv_round_rate, + .determine_rate = dsi_pll_14nm_postdiv_determine_rate, .set_rate = dsi_pll_14nm_postdiv_set_rate, }; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c index 90348a2af3e9..d00e415b9a99 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c @@ -533,21 +533,20 @@ static void dsi_pll_28nm_vco_unprepare(struct clk_hw *hw) pll_28nm->phy->pll_on = false; } -static long dsi_pll_28nm_clk_round_rate(struct clk_hw *hw, - unsigned long rate, unsigned long *parent_rate) +static int dsi_pll_28nm_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct dsi_pll_28nm *pll_28nm = to_pll_28nm(hw); - if (rate < pll_28nm->phy->cfg->min_pll_rate) - return pll_28nm->phy->cfg->min_pll_rate; - else if (rate > pll_28nm->phy->cfg->max_pll_rate) - return pll_28nm->phy->cfg->max_pll_rate; - else - return rate; + req->rate = clamp_t(unsigned long, req->rate, + pll_28nm->phy->cfg->min_pll_rate, + pll_28nm->phy->cfg->max_pll_rate); + + return 0; } static const struct clk_ops clk_ops_dsi_pll_28nm_vco_hpm = { - .round_rate = dsi_pll_28nm_clk_round_rate, + .determine_rate = dsi_pll_28nm_clk_determine_rate, .set_rate = dsi_pll_28nm_clk_set_rate, .recalc_rate = dsi_pll_28nm_clk_recalc_rate, .prepare = dsi_pll_28nm_vco_prepare_hpm, @@ -556,7 +555,7 @@ static const struct clk_ops clk_ops_dsi_pll_28nm_vco_hpm = { }; static const struct clk_ops clk_ops_dsi_pll_28nm_vco_lp = { - .round_rate = dsi_pll_28nm_clk_round_rate, + .determine_rate = dsi_pll_28nm_clk_determine_rate, .set_rate = dsi_pll_28nm_clk_set_rate, .recalc_rate = dsi_pll_28nm_clk_recalc_rate, .prepare = dsi_pll_28nm_vco_prepare_lp, @@ -565,7 +564,7 @@ static const struct clk_ops clk_ops_dsi_pll_28nm_vco_lp = { }; static const struct clk_ops clk_ops_dsi_pll_28nm_vco_8226 = { - .round_rate = dsi_pll_28nm_clk_round_rate, + .determine_rate = dsi_pll_28nm_clk_determine_rate, .set_rate = dsi_pll_28nm_clk_set_rate, .recalc_rate = dsi_pll_28nm_clk_recalc_rate, .prepare = dsi_pll_28nm_vco_prepare_8226, diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c index f3643320ff2f..8dcce9581dc3 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c @@ -231,21 +231,19 @@ static void dsi_pll_28nm_vco_unprepare(struct clk_hw *hw) pll_28nm->phy->pll_on = false; } -static long dsi_pll_28nm_clk_round_rate(struct clk_hw *hw, - unsigned long rate, unsigned long *parent_rate) +static int dsi_pll_28nm_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct dsi_pll_28nm *pll_28nm = to_pll_28nm(hw); - if (rate < pll_28nm->phy->cfg->min_pll_rate) - return pll_28nm->phy->cfg->min_pll_rate; - else if (rate > pll_28nm->phy->cfg->max_pll_rate) - return pll_28nm->phy->cfg->max_pll_rate; - else - return rate; + req->rate = clamp_t(unsigned long, req->rate, + pll_28nm->phy->cfg->min_pll_rate, pll_28nm->phy->cfg->max_pll_rate); + + return 0; } static const struct clk_ops clk_ops_dsi_pll_28nm_vco = { - .round_rate = dsi_pll_28nm_clk_round_rate, + .determine_rate = dsi_pll_28nm_clk_determine_rate, .set_rate = dsi_pll_28nm_clk_set_rate, .recalc_rate = dsi_pll_28nm_clk_recalc_rate, .prepare = dsi_pll_28nm_vco_prepare, @@ -296,18 +294,20 @@ static unsigned int get_vco_mul_factor(unsigned long byte_clk_rate) return 8; } -static long clk_bytediv_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int clk_bytediv_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { unsigned long best_parent; unsigned int factor; - factor = get_vco_mul_factor(rate); + factor = get_vco_mul_factor(req->rate); + + best_parent = req->rate * factor; + req->best_parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent); - best_parent = rate * factor; - *prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent); + req->rate = req->best_parent_rate / factor; - return *prate / factor; + return 0; } static int clk_bytediv_set_rate(struct clk_hw *hw, unsigned long rate, @@ -328,7 +328,7 @@ static int clk_bytediv_set_rate(struct clk_hw *hw, unsigned long rate, /* Our special byte clock divider ops */ static const struct clk_ops clk_bytediv_ops = { - .round_rate = clk_bytediv_round_rate, + .determine_rate = clk_bytediv_determine_rate, .set_rate = clk_bytediv_set_rate, .recalc_rate = clk_bytediv_recalc_rate, }; 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 8c98f91a5930..c5e1d2016bcc 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -90,6 +90,13 @@ struct dsi_pll_7nm { /* protects REG_DSI_7nm_PHY_CMN_CLK_CFG1 register */ spinlock_t pclk_mux_lock; + /* + * protects REG_DSI_7nm_PHY_CMN_CTRL_0 register and pll_enable_cnt + * member + */ + spinlock_t pll_enable_lock; + int pll_enable_cnt; + struct pll_7nm_cached_state cached_state; struct dsi_pll_7nm *slave; @@ -103,6 +110,9 @@ struct dsi_pll_7nm { */ static struct dsi_pll_7nm *pll_7nm_list[DSI_MAX]; +static void dsi_pll_enable_pll_bias(struct dsi_pll_7nm *pll); +static void dsi_pll_disable_pll_bias(struct dsi_pll_7nm *pll); + static void dsi_pll_setup_config(struct dsi_pll_config *config) { config->ssc_freq = 31500; @@ -340,6 +350,7 @@ static int dsi_pll_7nm_vco_set_rate(struct clk_hw *hw, unsigned long rate, struct dsi_pll_7nm *pll_7nm = to_pll_7nm(hw); struct dsi_pll_config config; + dsi_pll_enable_pll_bias(pll_7nm); DBG("DSI PLL%d rate=%lu, parent's=%lu", pll_7nm->phy->id, rate, parent_rate); @@ -357,6 +368,7 @@ static int dsi_pll_7nm_vco_set_rate(struct clk_hw *hw, unsigned long rate, dsi_pll_ssc_commit(pll_7nm, &config); + dsi_pll_disable_pll_bias(pll_7nm); /* flush, ensure all register writes are done*/ wmb(); @@ -385,19 +397,44 @@ static int dsi_pll_7nm_lock_status(struct dsi_pll_7nm *pll) static void dsi_pll_disable_pll_bias(struct dsi_pll_7nm *pll) { - u32 data = readl(pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); + unsigned long flags; + u32 data; + spin_lock_irqsave(&pll->pll_enable_lock, flags); + --pll->pll_enable_cnt; + if (pll->pll_enable_cnt < 0) { + spin_unlock_irqrestore(&pll->pll_enable_lock, flags); + DRM_DEV_ERROR_RATELIMITED(&pll->phy->pdev->dev, + "bug: imbalance in disabling PLL bias\n"); + return; + } else if (pll->pll_enable_cnt > 0) { + spin_unlock_irqrestore(&pll->pll_enable_lock, flags); + return; + } /* else: == 0 */ + + data = readl(pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); + data &= ~DSI_7nm_PHY_CMN_CTRL_0_PLL_SHUTDOWNB; writel(0, pll->phy->pll_base + REG_DSI_7nm_PHY_PLL_SYSTEM_MUXES); - writel(data & ~BIT(5), pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); + writel(data, pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); + spin_unlock_irqrestore(&pll->pll_enable_lock, flags); ndelay(250); } static void dsi_pll_enable_pll_bias(struct dsi_pll_7nm *pll) { - u32 data = readl(pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); + unsigned long flags; + u32 data; + + spin_lock_irqsave(&pll->pll_enable_lock, flags); + pll->pll_enable_cnt++; + WARN_ON(pll->pll_enable_cnt == INT_MAX); + + data = readl(pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); + data |= DSI_7nm_PHY_CMN_CTRL_0_PLL_SHUTDOWNB; + writel(data, pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); - writel(data | BIT(5), pll->phy->base + REG_DSI_7nm_PHY_CMN_CTRL_0); writel(0xc0, pll->phy->pll_base + REG_DSI_7nm_PHY_PLL_SYSTEM_MUXES); + spin_unlock_irqrestore(&pll->pll_enable_lock, flags); ndelay(250); } @@ -491,6 +528,10 @@ static int dsi_pll_7nm_vco_prepare(struct clk_hw *hw) if (pll_7nm->slave) dsi_pll_enable_global_clk(pll_7nm->slave); + writel(0x1, pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_RBUF_CTRL); + if (pll_7nm->slave) + writel(0x1, pll_7nm->slave->phy->base + REG_DSI_7nm_PHY_CMN_RBUF_CTRL); + error: return rc; } @@ -534,6 +575,7 @@ static unsigned long dsi_pll_7nm_vco_recalc_rate(struct clk_hw *hw, u32 dec; u64 pll_freq, tmp64; + dsi_pll_enable_pll_bias(pll_7nm); dec = readl(base + REG_DSI_7nm_PHY_PLL_DECIMAL_DIV_START_1); dec &= 0xff; @@ -558,24 +600,24 @@ static unsigned long dsi_pll_7nm_vco_recalc_rate(struct clk_hw *hw, DBG("DSI PLL%d returning vco rate = %lu, dec = %x, frac = %x", pll_7nm->phy->id, (unsigned long)vco_rate, dec, frac); + dsi_pll_disable_pll_bias(pll_7nm); + return (unsigned long)vco_rate; } -static long dsi_pll_7nm_clk_round_rate(struct clk_hw *hw, - unsigned long rate, unsigned long *parent_rate) +static int dsi_pll_7nm_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct dsi_pll_7nm *pll_7nm = to_pll_7nm(hw); - if (rate < pll_7nm->phy->cfg->min_pll_rate) - return pll_7nm->phy->cfg->min_pll_rate; - else if (rate > pll_7nm->phy->cfg->max_pll_rate) - return pll_7nm->phy->cfg->max_pll_rate; - else - return rate; + req->rate = clamp_t(unsigned long, req->rate, + pll_7nm->phy->cfg->min_pll_rate, pll_7nm->phy->cfg->max_pll_rate); + + return 0; } static const struct clk_ops clk_ops_dsi_pll_7nm_vco = { - .round_rate = dsi_pll_7nm_clk_round_rate, + .determine_rate = dsi_pll_7nm_clk_determine_rate, .set_rate = dsi_pll_7nm_vco_set_rate, .recalc_rate = dsi_pll_7nm_vco_recalc_rate, .prepare = dsi_pll_7nm_vco_prepare, @@ -593,6 +635,7 @@ static void dsi_7nm_pll_save_state(struct msm_dsi_phy *phy) void __iomem *phy_base = pll_7nm->phy->base; u32 cmn_clk_cfg0, cmn_clk_cfg1; + dsi_pll_enable_pll_bias(pll_7nm); cached->pll_out_div = readl(pll_7nm->phy->pll_base + REG_DSI_7nm_PHY_PLL_PLL_OUTDIV_RATE); cached->pll_out_div &= 0x3; @@ -604,6 +647,7 @@ static void dsi_7nm_pll_save_state(struct msm_dsi_phy *phy) cmn_clk_cfg1 = readl(phy_base + REG_DSI_7nm_PHY_CMN_CLK_CFG1); cached->pll_mux = FIELD_GET(DSI_7nm_PHY_CMN_CLK_CFG1_DSICLK_SEL__MASK, cmn_clk_cfg1); + dsi_pll_disable_pll_bias(pll_7nm); DBG("DSI PLL%d outdiv %x bit_clk_div %x pix_clk_div %x pll_mux %x", pll_7nm->phy->id, cached->pll_out_div, cached->bit_clk_div, cached->pix_clk_div, cached->pll_mux); @@ -826,6 +870,7 @@ static int dsi_pll_7nm_init(struct msm_dsi_phy *phy) spin_lock_init(&pll_7nm->postdiv_lock); spin_lock_init(&pll_7nm->pclk_mux_lock); + spin_lock_init(&pll_7nm->pll_enable_lock); pll_7nm->phy = phy; @@ -839,6 +884,12 @@ static int dsi_pll_7nm_init(struct msm_dsi_phy *phy) /* TODO: Remove this when we have proper display handover support */ msm_dsi_phy_pll_save_state(phy); + /* + * Store also proper vco_current_rate, because its value will be used in + * dsi_7nm_pll_restore_state(). + */ + if (!dsi_pll_7nm_vco_recalc_rate(&pll_7nm->clk_hw, VCO_REF_CLK_RATE)) + pll_7nm->vco_current_rate = pll_7nm->phy->cfg->min_pll_rate; return 0; } @@ -1034,7 +1085,8 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, } /* de-assert digital and pll power down */ - data = BIT(6) | BIT(5); + data = DSI_7nm_PHY_CMN_CTRL_0_DIGTOP_PWRDN_B | + DSI_7nm_PHY_CMN_CTRL_0_PLL_SHUTDOWNB; writel(data, base + REG_DSI_7nm_PHY_CMN_CTRL_0); /* Assert PLL core reset */ @@ -1177,6 +1229,7 @@ static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy) /* Turn off all PHY blocks */ writel(0x00, base + REG_DSI_7nm_PHY_CMN_CTRL_0); + /* make sure phy is turned off */ wmb(); |