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Thu, 28 Sep 2023 04:16:36 -0700 (PDT) Received: from umbar.unikie.fi ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id j18-20020ac253b2000000b004fb738796casm3086623lfh.40.2023.09.28.04.16.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Sep 2023 04:16:35 -0700 (PDT) From: Dmitry Baryshkov To: Rob Clark , Sean Paul , Abhinav Kumar , Marijn Suijten , Vinod Koul , Kishon Vijay Abraham I Cc: Philipp Zabel , Stephen Boyd , David Airlie , Daniel Vetter , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-phy@lists.infradead.org Subject: [PATCH v3 06/15] phy: qualcomm: add MSM8974 HDMI PHY support Date: Thu, 28 Sep 2023 14:16:20 +0300 Message-Id: <20230928111630.1217419-7-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230928111630.1217419-1-dmitry.baryshkov@linaro.org> References: <20230928111630.1217419-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230928_041637_780299_DD3727D4 X-CRM114-Status: GOOD ( 24.89 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add support for HDMI PHY on Qualcomm MSM8974 / APQ8074 platforms. Signed-off-by: Dmitry Baryshkov --- drivers/phy/qualcomm/Kconfig | 2 +- drivers/phy/qualcomm/Makefile | 1 + drivers/phy/qualcomm/phy-qcom-hdmi-28hpm.c | 327 ++++++++++++++++++++ drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.c | 1 + drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.h | 1 + 5 files changed, 331 insertions(+), 1 deletion(-) create mode 100644 drivers/phy/qualcomm/phy-qcom-hdmi-28hpm.c diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index f31b575a6832..36f78fd06b06 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -51,7 +51,7 @@ config PHY_QCOM_HDMI select GENERIC_PHY help Enable this to support the Qualcomm HDMI PHY presend on 32-bit platforms: - MSM8260, MSM8660, MSM8960, APQ8060 and APQ8064. + MSM8260, MSM8660, MSM8960, MSM8974, APQ8060, APQ8064, APQ8074 and APQ8084. Note, this driver is not used on MSM899x platforms, which use PHY_QCOM_QMP_HDMI instead. diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile index de9bbaf45c74..082020af7fc1 100644 --- a/drivers/phy/qualcomm/Makefile +++ b/drivers/phy/qualcomm/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_PHY_QCOM_HDMI) += phy-qcom-hdmi.o phy-qcom-hdmi-y := \ phy-qcom-hdmi-preqmp.o \ + phy-qcom-hdmi-28hpm.o \ phy-qcom-hdmi-28lpm.o \ obj-$(CONFIG_PHY_QCOM_M31_USB) += phy-qcom-m31.o diff --git a/drivers/phy/qualcomm/phy-qcom-hdmi-28hpm.c b/drivers/phy/qualcomm/phy-qcom-hdmi-28hpm.c new file mode 100644 index 000000000000..d3bf67e743aa --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-hdmi-28hpm.c @@ -0,0 +1,327 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + * Copyright (c) 2023, Linaro Ltd. + */ + +#include +#include + +#include "phy-qcom-hdmi-preqmp.h" +#include "phy-qcom-uniphy.h" + +#define REG_HDMI_8x74_ANA_CFG0 0x00000000 +#define REG_HDMI_8x74_ANA_CFG1 0x00000004 +#define REG_HDMI_8x74_ANA_CFG2 0x00000008 +#define REG_HDMI_8x74_ANA_CFG3 0x0000000c +#define REG_HDMI_8x74_PD_CTRL0 0x00000010 +#define REG_HDMI_8x74_PD_CTRL1 0x00000014 +#define REG_HDMI_8x74_GLB_CFG 0x00000018 +#define REG_HDMI_8x74_DCC_CFG0 0x0000001c +#define REG_HDMI_8x74_DCC_CFG1 0x00000020 +#define REG_HDMI_8x74_TXCAL_CFG0 0x00000024 +#define REG_HDMI_8x74_TXCAL_CFG1 0x00000028 +#define REG_HDMI_8x74_TXCAL_CFG2 0x0000002c +#define REG_HDMI_8x74_TXCAL_CFG3 0x00000030 +#define REG_HDMI_8x74_BIST_CFG0 0x00000034 +#define REG_HDMI_8x74_BIST_PATN0 0x0000003c +#define REG_HDMI_8x74_BIST_PATN1 0x00000040 +#define REG_HDMI_8x74_BIST_PATN2 0x00000044 +#define REG_HDMI_8x74_BIST_PATN3 0x00000048 +#define REG_HDMI_8x74_STATUS 0x0000005c + +#define HDMI_8974_VCO_MAX_FREQ 1800000000UL +#define HDMI_8974_VCO_MIN_FREQ 600000000UL + +#define HDMI_8974_COMMON_DIV 5 + +static void qcom_uniphy_setup(void __iomem *base, unsigned int ref_freq, + bool sdm_mode, + bool ref_freq_mult_2, + bool dither, + unsigned int refclk_div, + unsigned int vco_freq) +{ + unsigned int int_ref_freq = ref_freq * (ref_freq_mult_2 ? 2 : 1); + unsigned int div_in_freq = vco_freq / refclk_div; + unsigned int dc_offset = div_in_freq / int_ref_freq - 1; + unsigned int sdm_freq_seed; + unsigned int val; + unsigned int remain = div_in_freq - (dc_offset + 1) * int_ref_freq; + sdm_freq_seed = mult_frac(remain, 0x10000, int_ref_freq); + + val = (ref_freq_mult_2 ? BIT(0) : 0) | + ((refclk_div - 1) << 2); + writel(val, base + UNIPHY_PLL_REFCLK_CFG); + + writel(sdm_mode ? 0 : 0x40 + dc_offset, base + UNIPHY_PLL_SDM_CFG0); + + writel(dither ? 0x40 + dc_offset: 0, base + UNIPHY_PLL_SDM_CFG1); + + writel(sdm_freq_seed & 0xff, base + UNIPHY_PLL_SDM_CFG2); + + writel((sdm_freq_seed >> 8) & 0xff, base + UNIPHY_PLL_SDM_CFG3); + + writel(sdm_freq_seed >> 16, base + UNIPHY_PLL_SDM_CFG4); + + ref_freq = ref_freq * 5 / 1000; + writel(ref_freq & 0xff, base + UNIPHY_PLL_CAL_CFG8); + + writel(ref_freq >> 8, base + UNIPHY_PLL_CAL_CFG9); + + vco_freq /= 1000; + writel(vco_freq & 0xff, base + UNIPHY_PLL_CAL_CFG10); + + writel(vco_freq >> 8, base + UNIPHY_PLL_CAL_CFG11); +} + +static unsigned long qcom_uniphy_recalc(void __iomem *base, unsigned long parent_rate) +{ + unsigned long rate; + u32 refclk_cfg; + u32 dc_offset; + u64 fraq_n; + u32 val; + + refclk_cfg = readl(base + UNIPHY_PLL_REFCLK_CFG); + if (refclk_cfg & BIT(0)) + parent_rate *= 2; + + val = readl(base + UNIPHY_PLL_SDM_CFG0); + if (val & 0x40) { + dc_offset = val & 0x3f; + fraq_n = 0; + } else { + dc_offset = readl(base + UNIPHY_PLL_SDM_CFG1) & 0x3f; + fraq_n = readl(base + UNIPHY_PLL_SDM_CFG2) | + (readl(base + UNIPHY_PLL_SDM_CFG3) << 8); + } + + rate = (dc_offset + 1) * parent_rate; + rate += mult_frac(fraq_n, parent_rate, 0x10000); + + rate *= (refclk_cfg >> 2) * 0x3 + 1; + + return rate; +} + +static const unsigned int qcom_hdmi_8974_divs[] = {1, 2, 4, 6}; + +static unsigned long qcom_hdmi_8974_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct qcom_hdmi_preqmp_phy *hdmi_phy = hw_clk_to_phy(hw); + u32 div_idx = hdmi_pll_read(hdmi_phy, UNIPHY_PLL_POSTDIV1_CFG); + unsigned long rate = qcom_uniphy_recalc(hdmi_phy->pll_reg, parent_rate); + + return rate / HDMI_8974_COMMON_DIV / qcom_hdmi_8974_divs[div_idx & 0x3]; +} + +static long qcom_hdmi_8974_pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + return clamp(rate, + HDMI_8974_VCO_MIN_FREQ / HDMI_8974_COMMON_DIV / 6, + HDMI_8974_VCO_MAX_FREQ / HDMI_8974_COMMON_DIV / 1); +} + +static const struct clk_ops qcom_hdmi_8974_pll_ops = { + .recalc_rate = qcom_hdmi_8974_pll_recalc_rate, + .round_rate = qcom_hdmi_8974_pll_round_rate, +}; + +static int qcom_hdmi_msm8974_phy_find_div(unsigned int pixclk) +{ + int i; + unsigned int min_freq = HDMI_8974_VCO_MIN_FREQ / HDMI_8974_COMMON_DIV / 1000; + + if (pixclk > HDMI_8974_VCO_MAX_FREQ / HDMI_8974_COMMON_DIV / 1000) + return -E2BIG; + + for (i = 0; i < ARRAY_SIZE(qcom_hdmi_8974_divs); i++) { + if (pixclk >= min_freq / qcom_hdmi_8974_divs[i]) + return i; + } + + return -EINVAL; +} + +static int qcom_hdmi_msm8974_phy_pll_set_rate(struct qcom_hdmi_preqmp_phy *hdmi_phy) +{ + unsigned int pixclk = hdmi_phy->hdmi_opts.pixel_clk_rate; + unsigned long vco_rate; + unsigned int div; + int div_idx = 0; + + div_idx = qcom_hdmi_msm8974_phy_find_div(pixclk); + if (WARN_ON(div_idx < 0)) + return div_idx; + + div = qcom_hdmi_8974_divs[div_idx]; + vco_rate = pixclk * HDMI_8974_COMMON_DIV * div; + + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_GLB_CFG, 0x81); + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0x01); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_VCOLPF_CFG, 0x19); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_LPFR_CFG, 0x0e); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_LPFC1_CFG, 0x20); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_LPFC2_CFG, 0x0d); + + qcom_uniphy_setup(hdmi_phy->pll_reg, 19200, true, true, true, 1, vco_rate); + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_LKDET_CFG0, 0x10); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_LKDET_CFG1, 0x1a); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_LKDET_CFG2, 0x05); + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_POSTDIV1_CFG, div_idx); + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_POSTDIV2_CFG, 0x00); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_POSTDIV3_CFG, 0x00); + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_CAL_CFG2, 0x01); + + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_PD_CTRL0, 0x1f); + udelay(50); + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0x0f); + + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_PD_CTRL1, 0x00); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG2, 0x10); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG0, 0xdb); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG1, 0x43); + if (pixclk == 297000) { + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG2, 0x06); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG3, 0x03); + } else if (pixclk == 268500) { + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG2, 0x05); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG3, 0x00); + } else { + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG2, 0x02); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG3, 0x00); + } + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_VREG_CFG, 0x04); + + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_DCC_CFG0, 0xd0); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_DCC_CFG1, 0x1a); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_TXCAL_CFG0, 0x00); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_TXCAL_CFG1, 0x00); + if (pixclk == 268500) { + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_TXCAL_CFG2, 0x11); + } else { + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_TXCAL_CFG2, 0x02); + } + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_TXCAL_CFG3, 0x05); + udelay(200); + + return 0; +} + +static int qcom_hdmi_msm8974_phy_pll_enable(struct qcom_hdmi_preqmp_phy *hdmi_phy) +{ + int ret; + unsigned long status; + + /* Global enable */ + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_GLB_CFG, 0x81); + + /* Power up power gen */ + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_PD_CTRL0, 0x00); + udelay(350); + + /* PLL power up */ + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0x01); + udelay(5); + + /* Power up PLL LDO */ + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0x03); + udelay(350); + + /* PLL power up */ + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0x0f); + udelay(350); + + /* Poll for PLL ready status */ + ret = readl_poll_timeout(hdmi_phy->pll_reg + UNIPHY_PLL_STATUS, + status, status & BIT(0), + 100, 2000); + if (ret) { + dev_warn(hdmi_phy->dev, "HDMI PLL not ready\n"); + goto err; + } + + udelay(350); + + /* Poll for PHY ready status */ + ret = readl_poll_timeout(hdmi_phy->phy_reg + REG_HDMI_8x74_STATUS, + status, status & BIT(0), + 100, 2000); + if (ret) { + dev_warn(hdmi_phy->dev, "HDMI PHY not ready\n"); + goto err; + } + + return 0; + +err: + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0); + udelay(5); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_GLB_CFG, 0); + + return ret; +} + +static int qcom_hdmi_msm8974_phy_power_on(struct qcom_hdmi_preqmp_phy *hdmi_phy) +{ + int ret; + + ret = qcom_hdmi_msm8974_phy_pll_set_rate(hdmi_phy); + if (ret) + return ret; + + ret = qcom_hdmi_msm8974_phy_pll_enable(hdmi_phy); + if (ret) + return ret; + + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG0, 0x1b); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_ANA_CFG1, 0xf2); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_BIST_CFG0, 0x0); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_BIST_PATN0, 0x0); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_BIST_PATN1, 0x0); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_BIST_PATN2, 0x0); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_BIST_PATN3, 0x0); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_PD_CTRL1, 0x20); + + return 0; +} + +static int qcom_hdmi_msm8974_phy_power_off(struct qcom_hdmi_preqmp_phy *hdmi_phy) +{ + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_PD_CTRL0, 0x7f); + + hdmi_pll_write(hdmi_phy, UNIPHY_PLL_GLB_CFG, 0); + udelay(5); + hdmi_phy_write(hdmi_phy, REG_HDMI_8x74_GLB_CFG, 0); + + return 0; +} + +const struct clk_parent_data msm8974_hdmi_pll_parent = { + .fw_name = "xo", .name = "xo_board", +}; + +const struct qcom_hdmi_preqmp_cfg msm8974_hdmi_phy_cfg = { + .clk_names = { "iface", "alt_iface" }, + .num_clks = 2, + + .reg_names = { "vddio", "core-vdda" }, + .reg_init_load = { 100000, 10000 }, + .num_regs = 2, + + .power_on = qcom_hdmi_msm8974_phy_power_on, + .power_off = qcom_hdmi_msm8974_phy_power_off, + + .pll_ops = &qcom_hdmi_8974_pll_ops, + .pll_parent = &msm8974_hdmi_pll_parent, +}; diff --git a/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.c b/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.c index 6885f587d7b4..e181a45df2dc 100644 --- a/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.c +++ b/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.c @@ -181,6 +181,7 @@ static int qcom_hdmi_preqmp_probe(struct platform_device *pdev) static const struct of_device_id qcom_hdmi_preqmp_of_match_table[] = { { .compatible = "qcom,hdmi-phy-8960", .data = &msm8960_hdmi_phy_cfg, }, + { .compatible = "qcom,hdmi-phy-8974", .data = &msm8974_hdmi_phy_cfg, }, { }, }; MODULE_DEVICE_TABLE(of, qcom_hdmi_preqmp_of_match_table); diff --git a/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.h b/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.h index dca9be78d8fc..bc81d68463ec 100644 --- a/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.h +++ b/drivers/phy/qualcomm/phy-qcom-hdmi-preqmp.h @@ -75,5 +75,6 @@ static inline u32 hdmi_pll_read(struct qcom_hdmi_preqmp_phy *phy, int offset) } extern const struct qcom_hdmi_preqmp_cfg msm8960_hdmi_phy_cfg; +extern const struct qcom_hdmi_preqmp_cfg msm8974_hdmi_phy_cfg; #endif