// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2016, The Linux Foundation. All rights reserved. * Copyright (C) 2013 Red Hat * Author: Rob Clark */ #include #include "hdmi.h" struct hdmi_pll_8960 { struct platform_device *pdev; struct clk_hw clk_hw; void __iomem *mmio; unsigned long pixclk; }; #define hw_clk_to_pll(x) container_of(x, struct hdmi_pll_8960, clk_hw) /* * HDMI PLL: * * To get the parent clock setup properly, we need to plug in hdmi pll * configuration into common-clock-framework. */ struct pll_rate { unsigned long rate; int num_reg; struct { u32 val; u32 reg; } conf[32]; }; /* NOTE: keep sorted highest freq to lowest: */ static const struct pll_rate freqtbl[] = { { 154000000, 14, { { 0x08, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x0d, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x4d, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x5e, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0x42, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, } }, /* 1080p60/1080p50 case */ { 148500000, 27, { { 0x02, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG }, { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG }, { 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG }, { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B }, { 0x76, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x01, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, { 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG3 }, { 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 }, { 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 }, { 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 }, { 0xe6, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 }, } }, { 108000000, 13, { { 0x08, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x21, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x1c, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x49, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x49, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, } }, /* 720p60/720p50/1080i60/1080i50/1080p24/1080p30/1080p25 */ { 74250000, 8, { { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B }, { 0x12, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x76, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0xe6, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, } }, { 74176000, 14, { { 0x18, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0xe5, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x0c, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x7d, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0xbc, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, } }, { 65000000, 14, { { 0x18, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x8a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x0b, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x4b, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x7b, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0x09, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, } }, /* 480p60/480i60 */ { 27030000, 18, { { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B }, { 0x38, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG }, { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0xff, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x4e, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0xd7, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0x03, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, { 0x2a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 }, } }, /* 576p50/576i50 */ { 27000000, 27, { { 0x32, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG }, { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG }, { 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG }, { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B }, { 0x7b, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x01, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, { 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG3 }, { 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 }, { 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 }, { 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 }, { 0x2a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 }, } }, /* 640x480p60 */ { 25200000, 27, { { 0x32, REG_HDMI_8960_PHY_PLL_REFCLK_CFG }, { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG }, { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 }, { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 }, { 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG }, { 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG }, { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B }, { 0x77, REG_HDMI_8960_PHY_PLL_SDM_CFG0 }, { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG1 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG2 }, { 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 }, { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 }, { 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 }, { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 }, { 0x20, REG_HDMI_8960_PHY_PLL_SSC_CFG3 }, { 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 }, { 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 }, { 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 }, { 0xf4, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 }, { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 }, { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 }, { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 }, { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 }, { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 }, } }, }; static inline void pll_write(struct hdmi_pll_8960 *pll, u32 reg, u32 data) { msm_writel(data, pll->mmio + reg); } static inline u32 pll_read(struct hdmi_pll_8960 *pll, u32 reg) { return msm_readl(pll->mmio + reg); } static inline struct hdmi_phy *pll_get_phy(struct hdmi_pll_8960 *pll) { return platform_get_drvdata(pll->pdev); } static int hdmi_pll_enable(struct clk_hw *hw) { struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw); struct hdmi_phy *phy = pll_get_phy(pll); int timeout_count, pll_lock_retry = 10; unsigned int val; DBG(""); /* Assert PLL S/W reset */ pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x8d); pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0, 0x10); pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1, 0x1a); /* Wait for a short time before de-asserting * to allow the hardware to complete its job. * This much of delay should be fine for hardware * to assert and de-assert. */ udelay(10); /* De-assert PLL S/W reset */ pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x0d); val = hdmi_phy_read(phy, REG_HDMI_8960_PHY_REG12); val |= HDMI_8960_PHY_REG12_SW_RESET; /* Assert PHY S/W reset */ hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, val); val &= ~HDMI_8960_PHY_REG12_SW_RESET; /* * Wait for a short time before de-asserting to allow the hardware to * complete its job. This much of delay should be fine for hardware to * assert and de-assert. */ udelay(10); /* De-assert PHY S/W reset */ hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, val); hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG2, 0x3f); val = hdmi_phy_read(phy, REG_HDMI_8960_PHY_REG12); val |= HDMI_8960_PHY_REG12_PWRDN_B; hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, val); /* Wait 10 us for enabling global power for PHY */ mb(); udelay(10); val = pll_read(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B); val |= HDMI_8960_PHY_PLL_PWRDN_B_PLL_PWRDN_B; val &= ~HDMI_8960_PHY_PLL_PWRDN_B_PD_PLL; pll_write(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B, val); hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG2, 0x80); timeout_count = 1000; while (--pll_lock_retry > 0) { /* are we there yet? */ val = pll_read(pll, REG_HDMI_8960_PHY_PLL_STATUS0); if (val & HDMI_8960_PHY_PLL_STATUS0_PLL_LOCK) break; udelay(1); if (--timeout_count > 0) continue; /* * PLL has still not locked. * Do a software reset and try again * Assert PLL S/W reset first */ pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x8d); udelay(10); pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, 0x0d); /* * Wait for a short duration for the PLL calibration * before checking if the PLL gets locked */ udelay(350); timeout_count = 1000; } return 0; } static void hdmi_pll_disable(struct clk_hw *hw) { struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw); struct hdmi_phy *phy = pll_get_phy(pll); unsigned int val; DBG(""); val = hdmi_phy_read(phy, REG_HDMI_8960_PHY_REG12); val &= ~HDMI_8960_PHY_REG12_PWRDN_B; hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, val); val = pll_read(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B); val |= HDMI_8960_PHY_REG12_SW_RESET; val &= ~HDMI_8960_PHY_REG12_PWRDN_B; pll_write(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B, val); /* Make sure HDMI PHY/PLL are powered down */ mb(); } static const struct pll_rate *find_rate(unsigned long rate) { int i; for (i = 1; i < ARRAY_SIZE(freqtbl); i++) if (rate > freqtbl[i].rate) return &freqtbl[i - 1]; return &freqtbl[i - 1]; } static unsigned long hdmi_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw); return pll->pixclk; } static long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *parent_rate) { const struct pll_rate *pll_rate = find_rate(rate); return pll_rate->rate; } static int hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw); const struct pll_rate *pll_rate = find_rate(rate); int i; DBG("rate=%lu", rate); for (i = 0; i < pll_rate->num_reg; i++) pll_write(pll, pll_rate->conf[i].reg, pll_rate->conf[i].val); pll->pixclk = rate; return 0; } static const struct clk_ops hdmi_pll_ops = { .enable = hdmi_pll_enable, .disable = hdmi_pll_disable, .recalc_rate = hdmi_pll_recalc_rate, .round_rate = hdmi_pll_round_rate, .set_rate = hdmi_pll_set_rate, }; static const char * const hdmi_pll_parents[] = { "pxo", }; static struct clk_init_data pll_init = { .name = "hdmi_pll", .ops = &hdmi_pll_ops, .parent_names = hdmi_pll_parents, .num_parents = ARRAY_SIZE(hdmi_pll_parents), .flags = CLK_IGNORE_UNUSED, }; int msm_hdmi_pll_8960_init(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct hdmi_pll_8960 *pll; struct clk *clk; int i; /* sanity check: */ for (i = 0; i < (ARRAY_SIZE(freqtbl) - 1); i++) if (WARN_ON(freqtbl[i].rate < freqtbl[i + 1].rate)) return -EINVAL; pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL); if (!pll) return -ENOMEM; pll->mmio = msm_ioremap(pdev, "hdmi_pll", "HDMI_PLL"); if (IS_ERR(pll->mmio)) { DRM_DEV_ERROR(dev, "failed to map pll base\n"); return -ENOMEM; } pll->pdev = pdev; pll->clk_hw.init = &pll_init; clk = devm_clk_register(dev, &pll->clk_hw); if (IS_ERR(clk)) { DRM_DEV_ERROR(dev, "failed to register pll clock\n"); return -EINVAL; } return 0; }