[PATCH v8 7/7] phy: freescale: Add HDMI PHY driver for i.MX8MQ

From: Sandor Yu
Date: Tue Aug 08 2023 - 12:54:54 EST

Add Cadence HDP-TX HDMI PHY driver for i.MX8MQ.

Cadence HDP-TX PHY could be put in either DP mode or
HDMI mode base on the configuration chosen.
HDMI PHY mode is configurated in the driver.

Signed-off-by: Sandor Yu <Sandor.yu@xxxxxxx>
Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
drivers/phy/freescale/Kconfig | 9 +
drivers/phy/freescale/Makefile | 1 +
drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c | 955 ++++++++++++++++++++
3 files changed, 965 insertions(+)
create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c

diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
index 2999ba1e57d0..0c07fccba917 100644
--- a/drivers/phy/freescale/Kconfig
+++ b/drivers/phy/freescale/Kconfig
@@ -44,6 +44,15 @@ config PHY_FSL_IMX8MQ_DP_PHY
Enable this to support the Cadence HDPTX DP PHY driver
on i.MX8MQ SOC.

+config PHY_FSL_IMX8MQ_HDMI_PHY
+ tristate "Freescale i.MX8MQ HDMI PHY support"
+ depends on OF && HAS_IOMEM
+ depends on COMMON_CLK
+ select GENERIC_PHY
+ help
+ Enable this to support the Cadence HDPTX HDMI PHY driver
+ on i.MX8MQ SOC.
+
endif

config PHY_FSL_LYNX_28G
diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile
index 915a429d9fbc..245783c04951 100644
--- a/drivers/phy/freescale/Makefile
+++ b/drivers/phy/freescale/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
obj-$(CONFIG_PHY_FSL_IMX8M_PCIE) += phy-fsl-imx8m-pcie.o
obj-$(CONFIG_PHY_FSL_LYNX_28G) += phy-fsl-lynx-28g.o
obj-$(CONFIG_PHY_FSL_IMX8MQ_DP_PHY) += phy-fsl-imx8mq-dp.o
+obj-$(CONFIG_PHY_FSL_IMX8MQ_HDMI_PHY) += phy-fsl-imx8mq-hdmi.o
diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
new file mode 100644
index 000000000000..fffaaa888ba2
--- /dev/null
+++ b/drivers/phy/freescale/phy-fsl-imx8mq-hdmi.c
@@ -0,0 +1,955 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Cadence High-Definition Multimedia Interface (HDMI) PHY driver
+ *
+ * Copyright (C) 2022,2023 NXP Semiconductor, Inc.
+ */
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <drm/bridge/cdns-mhdp-mailbox.h>
+
+#define ADDR_PHY_AFE 0x80000
+
+/* PHY registers */
+#define CMN_SSM_BIAS_TMR 0x0022
+#define CMN_PLLSM0_USER_DEF_CTRL 0x002f
+#define CMN_PSM_CLK_CTRL 0x0061
+#define CMN_CDIAG_REFCLK_CTRL 0x0062
+#define CMN_PLL0_VCOCAL_START 0x0081
+#define CMN_PLL0_VCOCAL_INIT_TMR 0x0084
+#define CMN_PLL0_VCOCAL_ITER_TMR 0x0085
+#define CMN_TXPUCAL_CTRL 0x00e0
+#define CMN_TXPDCAL_CTRL 0x00f0
+#define CMN_TXPU_ADJ_CTRL 0x0108
+#define CMN_TXPD_ADJ_CTRL 0x010c
+#define CMN_DIAG_PLL0_FBH_OVRD 0x01c0
+#define CMN_DIAG_PLL0_FBL_OVRD 0x01c1
+#define CMN_DIAG_PLL0_OVRD 0x01c2
+#define CMN_DIAG_PLL0_TEST_MODE 0x01c4
+#define CMN_DIAG_PLL0_V2I_TUNE 0x01c5
+#define CMN_DIAG_PLL0_CP_TUNE 0x01c6
+#define CMN_DIAG_PLL0_LF_PROG 0x01c7
+#define CMN_DIAG_PLL0_PTATIS_TUNE1 0x01c8
+#define CMN_DIAG_PLL0_PTATIS_TUNE2 0x01c9
+#define CMN_DIAG_PLL0_INCLK_CTRL 0x01ca
+#define CMN_DIAG_PLL0_PXL_DIVH 0x01cb
+#define CMN_DIAG_PLL0_PXL_DIVL 0x01cc
+#define CMN_DIAG_HSCLK_SEL 0x01e0
+#define XCVR_PSM_RCTRL 0x4001
+#define TX_TXCC_CAL_SCLR_MULT_0 0x4047
+#define TX_TXCC_CPOST_MULT_00_0 0x404c
+#define XCVR_DIAG_PLLDRC_CTRL 0x40e0
+#define XCVR_DIAG_PLLDRC_CTRL 0x40e0
+#define XCVR_DIAG_HSCLK_SEL 0x40e1
+#define XCVR_DIAG_BIDI_CTRL 0x40e8
+#define TX_PSC_A0 0x4100
+#define TX_PSC_A1 0x4101
+#define TX_PSC_A2 0x4102
+#define TX_PSC_A3 0x4103
+#define TX_DIAG_TX_CTRL 0x41e0
+#define TX_DIAG_TX_DRV 0x41e1
+#define TX_DIAG_BGREF_PREDRV_DELAY 0x41e7
+#define TX_DIAG_ACYA_0 0x41ff
+#define TX_DIAG_ACYA_1 0x43ff
+#define TX_DIAG_ACYA_2 0x45ff
+#define TX_DIAG_ACYA_3 0x47ff
+#define TX_ANA_CTRL_REG_1 0x5020
+#define TX_ANA_CTRL_REG_2 0x5021
+#define TX_DIG_CTRL_REG_2 0x5024
+#define TXDA_CYA_AUXDA_CYA 0x5025
+#define TX_ANA_CTRL_REG_3 0x5026
+#define TX_ANA_CTRL_REG_4 0x5027
+#define TX_ANA_CTRL_REG_5 0x5029
+#define RX_PSC_A0 0x8000
+#define RX_PSC_CAL 0x8006
+#define PHY_HDP_MODE_CTRL 0xc008
+#define PHY_HDP_CLK_CTL 0xc009
+#define PHY_ISO_CMN_CTRL 0xc010
+#define PHY_PMA_CMN_CTRL1 0xc800
+#define PHY_PMA_ISO_CMN_CTRL 0xc810
+#define PHY_PMA_ISO_PLL_CTRL1 0xc812
+#define PHY_PMA_ISOLATION_CTRL 0xc81f
+
+/* PHY_HDP_CLK_CTL */
+#define PLL_DATA_RATE_CLK_DIV_MASK GENMASK(15, 8)
+#define PLL_DATA_RATE_CLK_DIV_HBR 0x24
+#define PLL_DATA_RATE_CLK_DIV_HBR2 0x12
+#define PLL_CLK_EN_ACK_EN BIT(3)
+#define PLL_CLK_EN BIT(2)
+#define PLL_READY BIT(1)
+#define PLL_EN BIT(0)
+
+/* PHY_PMA_CMN_CTRL1 */
+#define CMA_REF_CLK_DIG_DIV_MASK GENMASK(13, 12)
+#define CMA_REF_CLK_SEL_MASK GENMASK(6, 4)
+#define CMA_REF_CLK_RCV_EN_MASK BIT(3)
+#define CMA_REF_CLK_RCV_EN 1
+#define CMN_READY BIT(0)
+
+/* PHY_PMA_ISO_PLL_CTRL1 */
+#define CMN_PLL0_CLK_DATART_DIV_MASK GENMASK(7, 0)
+
+/* TX_DIAG_TX_DRV */
+#define TX_DRIVER_PROG_BOOST_ENABLE BIT(10)
+#define TX_DRIVER_PROG_BOOST_LEVEL_MASK GENMASK(9, 8)
+#define TX_DRIVER_LDO_BG_DEPENDENT_REF_ENABLE BIT(7)
+#define TX_DRIVER_LDO_BANDGAP_REF_ENABLE BIT(6)
+
+/* TX_TXCC_CAL_SCLR_MULT_0 */
+#define SCALED_RESISTOR_CALIBRATION_CODE_ADD BIT(8)
+#define RESISTOR_CAL_MULT_VAL_32_128 BIT(5)
+
+/* CMN_CDIAG_REFCLK_CTRL */
+#define DIG_REF_CLK_DIV_SCALER_MASK GENMASK(14, 12)
+#define REFCLK_TERMINATION_EN_OVERRIDE_EN BIT(7)
+#define REFCLK_TERMINATION_EN_OVERRIDE BIT(6)
+
+/* CMN_DIAG_HSCLK_SEL */
+#define HSCLK1_SEL_MASK GENMASK(5, 4)
+#define HSCLK0_SEL_MASK GENMASK(1, 0)
+
+/* XCVR_DIAG_HSCLK_SEL */
+#define HSCLK_SEL_MODE3_MASK GENMASK(13, 12)
+#define HSCLK_SEL_MODE3_HSCLK1 1
+
+/* CMN_PLL0_VCOCAL_START */
+#define VCO_CALIB_CODE_START_POINT_VAL_MASK GENMASK(8, 0)
+
+/* CMN_DIAG_PLL0_FBH_OVRD */
+#define PLL_FEEDBACK_DIV_HI_OVERRIDE_EN BIT(15)
+
+/* CMN_DIAG_PLL0_FBL_OVRD */
+#define PLL_FEEDBACK_DIV_LO_OVERRIDE_EN BIT(15)
+
+/* CMN_DIAG_PLL0_PXL_DIVH */
+#define PLL_PCLK_DIV_EN BIT(15)
+
+/* XCVR_DIAG_PLLDRC_CTRL */
+#define DPLL_CLK_SEL_MODE3 BIT(14)
+
+/* TX_DIAG_TX_CTRL */
+#define TX_IF_SUBRATE_MODE3_MASK GENMASK(7, 6)
+
+/* PHY_HDP_MODE_CTRL */
+#define POWER_STATE_A3_ACK BIT(7)
+#define POWER_STATE_A2_ACK BIT(6)
+#define POWER_STATE_A1_ACK BIT(5)
+#define POWER_STATE_A0_ACK BIT(4)
+#define POWER_STATE_A3 BIT(3)
+#define POWER_STATE_A2 BIT(2)
+#define POWER_STATE_A1 BIT(1)
+#define POWER_STATE_A0 BIT(0)
+
+/* PHY_PMA_ISO_CMN_CTRL */
+#define CMN_MACRO_PWR_EN_ACK BIT(5)
+
+#define KEEP_ALIVE 0x18
+
+#define REF_CLK_27MHZ 27000000
+
+/* HDMI TX clock control settings */
+struct hdptx_hdmi_ctrl {
+ u32 pixel_clk_freq_min;
+ u32 pixel_clk_freq_max;
+ u32 feedback_factor;
+ u32 data_range_kbps_min;
+ u32 data_range_kbps_max;
+ u32 cmnda_pll0_ip_div;
+ u32 cmn_ref_clk_dig_div;
+ u32 ref_clk_divider_scaler;
+ u32 pll_fb_div_total;
+ u32 cmnda_pll0_fb_div_low;
+ u32 cmnda_pll0_fb_div_high;
+ u32 pixel_div_total;
+ u32 cmnda_pll0_pxdiv_low;
+ u32 cmnda_pll0_pxdiv_high;
+ u32 vco_freq_min;
+ u32 vco_freq_max;
+ u32 vco_ring_select;
+ u32 cmnda_hs_clk_0_sel;
+ u32 cmnda_hs_clk_1_sel;
+ u32 hsclk_div_at_xcvr;
+ u32 hsclk_div_tx_sub_rate;
+ u32 cmnda_pll0_hs_sym_div_sel;
+ u32 cmnda_pll0_clk_freq_min;
+ u32 cmnda_pll0_clk_freq_max;
+};
+
+struct cdns_hdptx_hdmi_phy {
+ void __iomem *regs; /* DPTX registers base */
+ struct mutex mbox_mutex; /* mutex to protect mailbox */
+ struct device *dev;
+ struct phy *phy;
+ struct clk *ref_clk, *apb_clk;
+ u32 ref_clk_rate;
+ u32 pixel_clk_rate;
+ enum hdmi_colorspace color_space;
+ u32 bpc;
+};
+
+/* HDMI TX clock control settings, pixel clock is output */
+static const struct hdptx_hdmi_ctrl pixel_clk_output_ctrl_table[] = {
+/*Minclk Maxclk Fdbak DR_min DR_max ip_d dig DS Totl */
+{ 27000, 27000, 1000, 270000, 270000, 0x03, 0x1, 0x1, 240, 0x0bc, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x3, 27000, 27000},
+{ 27000, 27000, 1250, 337500, 337500, 0x03, 0x1, 0x1, 300, 0x0ec, 0x03c, 100, 0x030, 0x030, 2700000, 2700000, 0, 2, 2, 2, 4, 0x3, 33750, 33750},
+{ 27000, 27000, 1500, 405000, 405000, 0x03, 0x1, 0x1, 360, 0x11c, 0x048, 120, 0x03a, 0x03a, 3240000, 3240000, 0, 2, 2, 2, 4, 0x3, 40500, 40500},
+{ 27000, 27000, 2000, 540000, 540000, 0x03, 0x1, 0x1, 240, 0x0bc, 0x030, 80, 0x026, 0x026, 2160000, 2160000, 0, 2, 2, 2, 4, 0x2, 54000, 54000},
+{ 54000, 54000, 1000, 540000, 540000, 0x03, 0x1, 0x1, 480, 0x17c, 0x060, 80, 0x026, 0x026, 4320000, 4320000, 1, 2, 2, 2, 4, 0x3, 54000, 54000},
+{ 54000, 54000, 1250, 675000, 675000, 0x04, 0x1, 0x1, 400, 0x13c, 0x050, 50, 0x017, 0x017, 2700000, 2700000, 0, 1, 1, 2, 4, 0x2, 67500, 67500},
+{ 54000, 54000, 1500, 810000, 810000, 0x04, 0x1, 0x1, 480, 0x17c, 0x060, 60, 0x01c, 0x01c, 3240000, 3240000, 0, 2, 2, 2, 2, 0x2, 81000, 81000},
+{ 54000, 54000, 2000, 1080000, 1080000, 0x03, 0x1, 0x1, 240, 0x0bc, 0x030, 40, 0x012, 0x012, 2160000, 2160000, 0, 2, 2, 2, 1, 0x1, 108000, 108000},
+{ 74250, 74250, 1000, 742500, 742500, 0x03, 0x1, 0x1, 660, 0x20c, 0x084, 80, 0x026, 0x026, 5940000, 5940000, 1, 2, 2, 2, 4, 0x3, 74250, 74250},
+{ 74250, 74250, 1250, 928125, 928125, 0x04, 0x1, 0x1, 550, 0x1b4, 0x06e, 50, 0x017, 0x017, 3712500, 3712500, 1, 1, 1, 2, 4, 0x2, 92812, 92812},
+{ 74250, 74250, 1500, 1113750, 1113750, 0x04, 0x1, 0x1, 660, 0x20c, 0x084, 60, 0x01c, 0x01c, 4455000, 4455000, 1, 2, 2, 2, 2, 0x2, 111375, 111375},
+{ 74250, 74250, 2000, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 40, 0x012, 0x012, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
+{ 99000, 99000, 1000, 990000, 990000, 0x03, 0x1, 0x1, 440, 0x15c, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 2, 0x2, 99000, 99000},
+{ 99000, 99000, 1250, 1237500, 1237500, 0x03, 0x1, 0x1, 275, 0x0d8, 0x037, 25, 0x00b, 0x00a, 2475000, 2475000, 0, 1, 1, 2, 2, 0x1, 123750, 123750},
+{ 99000, 99000, 1500, 1485000, 1485000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 30, 0x00d, 0x00d, 2970000, 2970000, 0, 2, 2, 2, 1, 0x1, 148500, 148500},
+{ 99000, 99000, 2000, 1980000, 1980000, 0x03, 0x1, 0x1, 440, 0x15c, 0x058, 40, 0x012, 0x012, 3960000, 3960000, 1, 2, 2, 2, 1, 0x1, 198000, 198000},
+{148500, 148500, 1000, 1485000, 1485000, 0x03, 0x1, 0x1, 660, 0x20c, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 2, 0x2, 148500, 148500},
+{148500, 148500, 1250, 1856250, 1856250, 0x04, 0x1, 0x1, 550, 0x1b4, 0x06e, 25, 0x00b, 0x00a, 3712500, 3712500, 1, 1, 1, 2, 2, 0x1, 185625, 185625},
+{148500, 148500, 1500, 2227500, 2227500, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 30, 0x00d, 0x00d, 4455000, 4455000, 1, 1, 1, 2, 2, 0x1, 222750, 222750},
+{148500, 148500, 2000, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20c, 0x084, 40, 0x012, 0x012, 5940000, 5940000, 1, 2, 2, 2, 1, 0x1, 297000, 297000},
+{198000, 198000, 1000, 1980000, 1980000, 0x03, 0x1, 0x1, 220, 0x0ac, 0x02c, 10, 0x003, 0x003, 1980000, 1980000, 0, 1, 1, 2, 1, 0x0, 198000, 198000},
+{198000, 198000, 1250, 2475000, 2475000, 0x03, 0x1, 0x1, 550, 0x1b4, 0x06e, 25, 0x00b, 0x00a, 4950000, 4950000, 1, 1, 1, 2, 2, 0x1, 247500, 247500},
+{198000, 198000, 1500, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 15, 0x006, 0x005, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
+{198000, 198000, 2000, 3960000, 3960000, 0x03, 0x1, 0x1, 440, 0x15c, 0x058, 20, 0x008, 0x008, 3960000, 3960000, 1, 1, 1, 2, 1, 0x0, 396000, 396000},
+{297000, 297000, 1000, 2970000, 2970000, 0x03, 0x1, 0x1, 330, 0x104, 0x042, 10, 0x003, 0x003, 2970000, 2970000, 0, 1, 1, 2, 1, 0x0, 297000, 297000},
+{297000, 297000, 1500, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 15, 0x006, 0x005, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
+{297000, 297000, 2000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20c, 0x084, 20, 0x008, 0x008, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
+{594000, 594000, 1000, 5940000, 5940000, 0x03, 0x1, 0x1, 660, 0x20c, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 1, 0x0, 594000, 594000},
+{594000, 594000, 750, 4455000, 4455000, 0x03, 0x1, 0x1, 495, 0x188, 0x063, 10, 0x003, 0x003, 4455000, 4455000, 1, 1, 1, 2, 1, 0x0, 445500, 445500},
+{594000, 594000, 625, 3712500, 3712500, 0x04, 0x1, 0x1, 550, 0x1b4, 0x06e, 10, 0x003, 0x003, 3712500, 3712500, 1, 1, 1, 2, 1, 0x0, 371250, 371250},
+{594000, 594000, 500, 2970000, 2970000, 0x03, 0x1, 0x1, 660, 0x20c, 0x084, 10, 0x003, 0x003, 5940000, 5940000, 1, 1, 1, 2, 2, 0x1, 297000, 297000},
+};
+
+/* HDMI TX PLL tuning settings */
+struct hdptx_hdmi_pll_tuning {
+ u32 vco_freq_bin;
+ u32 vco_freq_min;
+ u32 vco_freq_max;
+ u32 volt_to_current_coarse;
+ u32 volt_to_current;
+ u32 ndac_ctrl;
+ u32 pmos_ctrl;
+ u32 ptat_ndac_ctrl;
+ u32 feedback_div_total;
+ u32 charge_pump_gain;
+ u32 coarse_code;
+ u32 v2i_code;
+ u32 vco_cal_code;
+};
+
+/* HDMI TX PLL tuning settings, pixel clock is output */
+static const struct hdptx_hdmi_pll_tuning pixel_clk_output_pll_table[] = {
+/*bin VCO_freq min/max coar cod NDAC PMOS PTAT div-T P-Gain Coa V2I CAL */
+{ 1, 1980000, 1980000, 0x4, 0x3, 0x0, 0x09, 0x09, 220, 0x42, 160, 5, 183 },
+{ 2, 2160000, 2160000, 0x4, 0x3, 0x0, 0x09, 0x09, 240, 0x42, 166, 6, 208 },
+{ 3, 2475000, 2475000, 0x5, 0x3, 0x1, 0x00, 0x07, 275, 0x42, 167, 6, 209 },
+{ 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 300, 0x42, 188, 6, 230 },
+{ 4, 2700000, 2700000, 0x5, 0x3, 0x1, 0x00, 0x07, 400, 0x4c, 188, 6, 230 },
+{ 5, 2970000, 2970000, 0x6, 0x3, 0x1, 0x00, 0x07, 330, 0x42, 183, 6, 225 },
+{ 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 360, 0x42, 203, 7, 256 },
+{ 6, 3240000, 3240000, 0x6, 0x3, 0x1, 0x00, 0x07, 480, 0x4c, 203, 7, 256 },
+{ 7, 3712500, 3712500, 0x4, 0x3, 0x0, 0x07, 0x0F, 550, 0x4c, 212, 7, 257 },
+{ 8, 3960000, 3960000, 0x5, 0x3, 0x0, 0x07, 0x0F, 440, 0x42, 184, 6, 226 },
+{ 9, 4320000, 4320000, 0x5, 0x3, 0x1, 0x07, 0x0F, 480, 0x42, 205, 7, 258 },
+{ 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 495, 0x42, 219, 7, 272 },
+{ 10, 4455000, 4455000, 0x5, 0x3, 0x0, 0x07, 0x0F, 660, 0x4c, 219, 7, 272 },
+{ 11, 4950000, 4950000, 0x6, 0x3, 0x1, 0x00, 0x07, 550, 0x42, 213, 7, 258 },
+{ 12, 5940000, 5940000, 0x7, 0x3, 0x1, 0x00, 0x07, 660, 0x42, 244, 8, 292 },
+};
+
+static int cdns_phy_reg_write(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 addr, u32 val)
+{
+ return cdns_mhdp_reg_write(cdns_phy, ADDR_PHY_AFE + (addr << 2), val);
+}
+
+static u32 cdns_phy_reg_read(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 addr)
+{
+ u32 reg32;
+
+ cdns_mhdp_reg_read(cdns_phy, ADDR_PHY_AFE + (addr << 2), &reg32);
+
+ return reg32;
+}
+
+static int wait_for_ack(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 reg, u32 mask,
+ const char *err_msg)
+{
+ u32 val, i;
+
+ for (i = 0; i < 10; i++) {
+ val = cdns_phy_reg_read(cdns_phy, reg);
+ if (val & mask)
+ return 0;
+ msleep(20);
+ }
+
+ dev_err(cdns_phy->dev, "%s\n", err_msg);
+ return -1;
+}
+
+static bool hdptx_phy_check_alive(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 alive, newalive;
+ u8 retries_left = 50;
+
+ alive = readl(cdns_phy->regs + KEEP_ALIVE);
+
+ while (retries_left--) {
+ udelay(2);
+
+ newalive = readl(cdns_phy->regs + KEEP_ALIVE);
+ if (alive == newalive)
+ continue;
+ return true;
+ }
+ return false;
+}
+
+static int hdptx_hdmi_clk_enable(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ struct device *dev = cdns_phy->dev;
+ u32 ref_clk_rate;
+ int ret;
+
+ cdns_phy->ref_clk = devm_clk_get(dev, "ref");
+ if (IS_ERR(cdns_phy->ref_clk)) {
+ dev_err(dev, "phy ref clock not found\n");
+ return PTR_ERR(cdns_phy->ref_clk);
+ }
+
+ cdns_phy->apb_clk = devm_clk_get(dev, "apb");
+ if (IS_ERR(cdns_phy->apb_clk)) {
+ dev_err(dev, "phy apb clock not found\n");
+ return PTR_ERR(cdns_phy->apb_clk);
+ }
+
+ ret = clk_prepare_enable(cdns_phy->ref_clk);
+ if (ret) {
+ dev_err(cdns_phy->dev, "Failed to prepare ref clock\n");
+ return ret;
+ }
+
+ ref_clk_rate = clk_get_rate(cdns_phy->ref_clk);
+ if (!ref_clk_rate) {
+ dev_err(cdns_phy->dev, "Failed to get ref clock rate\n");
+ goto err_ref_clk;
+ }
+
+ if (ref_clk_rate == REF_CLK_27MHZ) {
+ cdns_phy->ref_clk_rate = ref_clk_rate;
+ } else {
+ dev_err(cdns_phy->dev, "Not support Ref Clock Rate(%dHz)\n", ref_clk_rate);
+ goto err_ref_clk;
+ }
+
+ ret = clk_prepare_enable(cdns_phy->apb_clk);
+ if (ret) {
+ dev_err(cdns_phy->dev, "Failed to prepare apb clock\n");
+ goto err_ref_clk;
+ }
+
+ return 0;
+
+err_ref_clk:
+ clk_disable_unprepare(cdns_phy->ref_clk);
+ return -EINVAL;
+}
+
+static void hdptx_hdmi_clk_disable(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ clk_disable_unprepare(cdns_phy->ref_clk);
+ clk_disable_unprepare(cdns_phy->apb_clk);
+}
+
+static void hdptx_hdmi_arc_config(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u16 txpu_calib_code;
+ u16 txpd_calib_code;
+ u16 txpu_adj_calib_code;
+ u16 txpd_adj_calib_code;
+ u16 prev_calib_code;
+ u16 new_calib_code;
+ u16 rdata;
+
+ /* Power ARC */
+ cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 0x0001);
+
+ prev_calib_code = cdns_phy_reg_read(cdns_phy, TX_DIG_CTRL_REG_2);
+ txpu_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPUCAL_CTRL);
+ txpd_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPDCAL_CTRL);
+ txpu_adj_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPU_ADJ_CTRL);
+ txpd_adj_calib_code = cdns_phy_reg_read(cdns_phy, CMN_TXPD_ADJ_CTRL);
+
+ new_calib_code = ((txpu_calib_code + txpd_calib_code) / 2)
+ + txpu_adj_calib_code + txpd_adj_calib_code;
+
+ if (new_calib_code != prev_calib_code) {
+ rdata = cdns_phy_reg_read(cdns_phy, TX_ANA_CTRL_REG_1);
+ rdata &= 0xdfff;
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, rdata);
+ cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, new_calib_code);
+ mdelay(10);
+ rdata |= 0x2000;
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, rdata);
+ usleep_range(150, 250);
+ }
+
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2098);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030c);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0010);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x4001);
+ mdelay(5);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2198);
+ mdelay(5);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030d);
+ usleep_range(100, 200);
+ cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030f);
+}
+
+static void hdptx_hdmi_phy_set_vswing(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 k;
+ const u32 num_lanes = 4;
+
+ for (k = 0; k < num_lanes; k++) {
+ cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_DRV | (k << 9)),
+ TX_DRIVER_PROG_BOOST_ENABLE |
+ FIELD_PREP(TX_DRIVER_PROG_BOOST_LEVEL_MASK, 3) |
+ TX_DRIVER_LDO_BG_DEPENDENT_REF_ENABLE |
+ TX_DRIVER_LDO_BANDGAP_REF_ENABLE);
+ cdns_phy_reg_write(cdns_phy, (TX_TXCC_CPOST_MULT_00_0 | (k << 9)), 0x0);
+ cdns_phy_reg_write(cdns_phy, (TX_TXCC_CAL_SCLR_MULT_0 | (k << 9)),
+ SCALED_RESISTOR_CALIBRATION_CODE_ADD |
+ RESISTOR_CAL_MULT_VAL_32_128);
+ }
+}
+
+static int hdptx_hdmi_feedback_factor(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 feedback_factor;
+
+ switch (cdns_phy->color_space) {
+ case HDMI_COLORSPACE_YUV422:
+ feedback_factor = 1000;
+ break;
+
+ case HDMI_COLORSPACE_YUV420:
+ switch (cdns_phy->bpc) {
+ case 8:
+ feedback_factor = 500;
+ break;
+ case 10:
+ feedback_factor = 625;
+ break;
+ case 12:
+ feedback_factor = 750;
+ break;
+ case 16:
+ feedback_factor = 1000;
+ break;
+ default:
+ dev_dbg(cdns_phy->dev, "Invalid ColorDepth\n");
+ return 0;
+ }
+ break;
+
+ default:
+ /* Assume RGB/YUV444 */
+ switch (cdns_phy->bpc) {
+ case 10:
+ feedback_factor = 1250;
+ break;
+ case 12:
+ feedback_factor = 1500;
+ break;
+ case 16:
+ feedback_factor = 2000;
+ break;
+ default:
+ feedback_factor = 1000;
+ }
+ }
+
+ return feedback_factor;
+}
+
+static int hdptx_hdmi_phy_config(struct cdns_hdptx_hdmi_phy *cdns_phy,
+ const struct hdptx_hdmi_ctrl *p_ctrl_table,
+ const struct hdptx_hdmi_pll_tuning *p_pll_table,
+ char pclk_in)
+{
+ const u32 num_lanes = 4;
+ u32 val, k;
+
+ /* enable PHY isolation mode only for CMN */
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISOLATION_CTRL, 0xd000);
+
+ /* set cmn_pll0_clk_datart1_div/cmn_pll0_clk_datart0_div dividers */
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_ISO_PLL_CTRL1);
+ val &= ~CMN_PLL0_CLK_DATART_DIV_MASK;
+ val |= FIELD_PREP(CMN_PLL0_CLK_DATART_DIV_MASK, 0x12);
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_PLL_CTRL1, val);
+
+ /* assert PHY reset from isolation register */
+ cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0000);
+ /* assert PMA CMN reset */
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0000);
+
+ /* register XCVR_DIAG_BIDI_CTRL */
+ for (k = 0; k < num_lanes; k++)
+ cdns_phy_reg_write(cdns_phy, XCVR_DIAG_BIDI_CTRL | (k << 9), 0x00ff);
+
+ /* Describing Task phy_cfg_hdp */
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= ~CMA_REF_CLK_RCV_EN_MASK;
+ val |= FIELD_PREP(CMA_REF_CLK_RCV_EN_MASK, CMA_REF_CLK_RCV_EN);
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ /* PHY Registers */
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= ~CMA_REF_CLK_DIG_DIV_MASK;
+ val |= FIELD_PREP(CMA_REF_CLK_DIG_DIV_MASK, p_ctrl_table->cmn_ref_clk_dig_div);
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL);
+ val &= ~PLL_DATA_RATE_CLK_DIV_MASK;
+ val |= FIELD_PREP(PLL_DATA_RATE_CLK_DIV_MASK,
+ PLL_DATA_RATE_CLK_DIV_HBR2);
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val);
+
+ /* Common control module control and diagnostic registers */
+ val = cdns_phy_reg_read(cdns_phy, CMN_CDIAG_REFCLK_CTRL);
+ val &= ~DIG_REF_CLK_DIV_SCALER_MASK;
+ val |= FIELD_PREP(DIG_REF_CLK_DIV_SCALER_MASK, p_ctrl_table->ref_clk_divider_scaler);
+ val |= REFCLK_TERMINATION_EN_OVERRIDE_EN | REFCLK_TERMINATION_EN_OVERRIDE;
+ cdns_phy_reg_write(cdns_phy, CMN_CDIAG_REFCLK_CTRL, val);
+
+ /* High speed clock used */
+ val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL);
+ val &= ~(HSCLK1_SEL_MASK | HSCLK0_SEL_MASK);
+ val |= FIELD_PREP(HSCLK1_SEL_MASK, (p_ctrl_table->cmnda_hs_clk_1_sel >> 1));
+ val |= FIELD_PREP(HSCLK0_SEL_MASK, (p_ctrl_table->cmnda_hs_clk_0_sel >> 1));
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_HSCLK_SEL, val);
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)));
+ val &= ~HSCLK_SEL_MODE3_MASK;
+ val |= FIELD_PREP(HSCLK_SEL_MODE3_MASK,
+ (p_ctrl_table->cmnda_hs_clk_0_sel >> 1));
+ cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val);
+ }
+
+ /* PLL 0 control state machine registers */
+ val = p_ctrl_table->vco_ring_select << 12;
+ cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_USER_DEF_CTRL, val);
+
+ if (pclk_in) {
+ val = 0x30a0;
+ } else {
+ val = cdns_phy_reg_read(cdns_phy, CMN_PLL0_VCOCAL_START);
+ val &= ~VCO_CALIB_CODE_START_POINT_VAL_MASK;
+ val |= FIELD_PREP(VCO_CALIB_CODE_START_POINT_VAL_MASK,
+ p_pll_table->vco_cal_code);
+ }
+ cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_START, val);
+
+ cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_INIT_TMR, 0x0064);
+ cdns_phy_reg_write(cdns_phy, CMN_PLL0_VCOCAL_ITER_TMR, 0x000a);
+
+ /* Common functions control and diagnostics registers */
+ val = p_ctrl_table->cmnda_pll0_hs_sym_div_sel << 8;
+ val |= p_ctrl_table->cmnda_pll0_ip_div;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_INCLK_CTRL, val);
+
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_OVRD, 0x0000);
+
+ val = p_ctrl_table->cmnda_pll0_fb_div_high;
+ val |= PLL_FEEDBACK_DIV_HI_OVERRIDE_EN;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBH_OVRD, val);
+
+ val = p_ctrl_table->cmnda_pll0_fb_div_low;
+ val |= PLL_FEEDBACK_DIV_LO_OVERRIDE_EN;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_FBL_OVRD, val);
+
+ if (!pclk_in) {
+ val = p_ctrl_table->cmnda_pll0_pxdiv_low;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PXL_DIVL, val);
+
+ val = p_ctrl_table->cmnda_pll0_pxdiv_high;
+ val |= PLL_PCLK_DIV_EN;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PXL_DIVH, val);
+ }
+
+ val = p_pll_table->volt_to_current_coarse;
+ val |= (p_pll_table->volt_to_current) << 4;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_V2I_TUNE, val);
+
+ val = p_pll_table->charge_pump_gain;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_CP_TUNE, val);
+
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_LF_PROG, 0x0008);
+
+ val = p_pll_table->pmos_ctrl;
+ val |= (p_pll_table->ndac_ctrl) << 8;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE1, val);
+
+ val = p_pll_table->ptat_ndac_ctrl;
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_PTATIS_TUNE2, val);
+
+ if (pclk_in)
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_TEST_MODE, 0x0022);
+ else
+ cdns_phy_reg_write(cdns_phy, CMN_DIAG_PLL0_TEST_MODE, 0x0020);
+
+ cdns_phy_reg_write(cdns_phy, CMN_PSM_CLK_CTRL, 0x0016);
+
+ /* Transceiver control and diagnostic registers */
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)));
+ val &= ~DPLL_CLK_SEL_MODE3;
+ cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val);
+ }
+
+ for (k = 0; k < num_lanes; k++) {
+ val = cdns_phy_reg_read(cdns_phy, (TX_DIAG_TX_CTRL | (k << 9)));
+ val &= ~TX_IF_SUBRATE_MODE3_MASK;
+ val |= FIELD_PREP(TX_IF_SUBRATE_MODE3_MASK,
+ (p_ctrl_table->hsclk_div_tx_sub_rate >> 1));
+ cdns_phy_reg_write(cdns_phy, (TX_DIAG_TX_CTRL | (k << 9)), val);
+ }
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_PMA_CMN_CTRL1);
+ val &= ~CMA_REF_CLK_SEL_MASK;
+ /*
+ * single ended reference clock (val |= 0x0030);
+ * differential clock (val |= 0x0000);
+ * for differential clock on the refclk_p and
+ * refclk_m off chip pins: CMN_DIAG_ACYA[8]=1'b1
+ * cdns_phy_reg_write(cdns_phy, CMN_DIAG_ACYA, 0x0100);
+ */
+ val |= FIELD_PREP(CMA_REF_CLK_SEL_MASK, 3);
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_CMN_CTRL1, val);
+
+ /* Deassert PHY reset */
+ cdns_phy_reg_write(cdns_phy, PHY_ISO_CMN_CTRL, 0x0001);
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0003);
+
+ /* Power state machine registers */
+ for (k = 0; k < num_lanes; k++)
+ cdns_phy_reg_write(cdns_phy, XCVR_PSM_RCTRL | (k << 9), 0xfefc);
+
+ /* Assert cmn_macro_pwr_en */
+ cdns_phy_reg_write(cdns_phy, PHY_PMA_ISO_CMN_CTRL, 0x0013);
+
+ /* wait for cmn_macro_pwr_en_ack */
+ if (wait_for_ack(cdns_phy, PHY_PMA_ISO_CMN_CTRL, CMN_MACRO_PWR_EN_ACK,
+ "MA output macro power up failed"))
+ return -1;
+
+ /* wait for cmn_ready */
+ if (wait_for_ack(cdns_phy, PHY_PMA_CMN_CTRL1, CMN_READY,
+ "PMA output ready failed"))
+ return -1;
+
+ for (k = 0; k < num_lanes; k++) {
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A0 | (k << 9), 0x6791);
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A1 | (k << 9), 0x6790);
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A2 | (k << 9), 0x0090);
+ cdns_phy_reg_write(cdns_phy, TX_PSC_A3 | (k << 9), 0x0090);
+
+ val = cdns_phy_reg_read(cdns_phy, RX_PSC_CAL | (k << 9));
+ val &= 0xffbb;
+ cdns_phy_reg_write(cdns_phy, RX_PSC_CAL | (k << 9), val);
+
+ val = cdns_phy_reg_read(cdns_phy, RX_PSC_A0 | (k << 9));
+ val &= 0xffbb;
+ cdns_phy_reg_write(cdns_phy, RX_PSC_A0 | (k << 9), val);
+ }
+ return 0;
+}
+
+static int hdptx_hdmi_phy_cfg(struct cdns_hdptx_hdmi_phy *cdns_phy, u32 rate)
+{
+ const struct hdptx_hdmi_ctrl *p_ctrl_table;
+ const struct hdptx_hdmi_pll_tuning *p_pll_table;
+ const u32 refclk_freq_khz = cdns_phy->ref_clk_rate / 1000;
+ const u8 pclk_in = false;
+ u32 pixel_freq = rate;
+ u32 vco_freq, char_freq;
+ u32 div_total, feedback_factor;
+ u32 i, ret;
+
+ feedback_factor = hdptx_hdmi_feedback_factor(cdns_phy);
+
+ char_freq = pixel_freq * feedback_factor / 1000;
+
+ dev_dbg(cdns_phy->dev,
+ "Pixel clock: (%d KHz), character clock: %d, bpc is (%0d-bit)\n",
+ pixel_freq, char_freq, cdns_phy->bpc);
+
+ /* Get right row from the ctrl_table table.
+ * Check if 'pixel_freq_khz' value matches the PIXEL_CLK_FREQ column.
+ * Consider only the rows with FEEDBACK_FACTOR column matching feedback_factor.
+ */
+ for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++) {
+ if (feedback_factor == pixel_clk_output_ctrl_table[i].feedback_factor &&
+ pixel_freq == pixel_clk_output_ctrl_table[i].pixel_clk_freq_min) {
+ p_ctrl_table = &pixel_clk_output_ctrl_table[i];
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(pixel_clk_output_ctrl_table)) {
+ dev_warn(cdns_phy->dev,
+ "Pixel clk (%d KHz) not supported, bpc is (%0d-bit)\n",
+ pixel_freq, cdns_phy->bpc);
+ return 0;
+ }
+
+ div_total = p_ctrl_table->pll_fb_div_total;
+ vco_freq = refclk_freq_khz * div_total / p_ctrl_table->cmnda_pll0_ip_div;
+
+ /* Get right row from the pixel_clk_output_pll_table table.
+ * Check if vco_freq_khz and feedback_div_total
+ * column matching with pixel_clk_output_pll_table.
+ */
+ for (i = 0; i < ARRAY_SIZE(pixel_clk_output_pll_table); i++) {
+ if (vco_freq == pixel_clk_output_pll_table[i].vco_freq_min &&
+ div_total == pixel_clk_output_pll_table[i].feedback_div_total) {
+ p_pll_table = &pixel_clk_output_pll_table[i];
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(pixel_clk_output_pll_table)) {
+ dev_warn(cdns_phy->dev, "VCO (%d KHz) not supported\n", vco_freq);
+ return -1;
+ }
+ dev_dbg(cdns_phy->dev, "VCO frequency is (%d KHz)\n", vco_freq);
+
+ ret = hdptx_hdmi_phy_config(cdns_phy, p_ctrl_table, p_pll_table, pclk_in);
+ if (ret < 0)
+ return ret;
+
+ return char_freq;
+}
+
+static int hdptx_hdmi_phy_power_up(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ /* set Power State to A2 */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A2);
+
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_0, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_1, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_2, 1);
+ cdns_phy_reg_write(cdns_phy, TX_DIAG_ACYA_3, 1);
+
+ if (wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A2_ACK,
+ "Wait A2 Ack failed"))
+ return -1;
+
+ /* Power up ARC */
+ hdptx_hdmi_arc_config(cdns_phy);
+
+ /* Configure PHY in A0 mode (PHY must be in the A0 power
+ * state in order to transmit data)
+ */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A0);
+ if (wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A0_ACK,
+ "Wait A0 Ack failed"))
+ return -1;
+
+ return 0;
+}
+
+static int hdptx_hdmi_phy_power_down(struct cdns_hdptx_hdmi_phy *cdns_phy)
+{
+ u32 val;
+
+ val = cdns_phy_reg_read(cdns_phy, PHY_HDP_MODE_CTRL);
+ val &= ~(POWER_STATE_A0 | POWER_STATE_A1 | POWER_STATE_A2 | POWER_STATE_A3);
+ /* PHY_DP_MODE_CTL set to A3 power state */
+ cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, val | POWER_STATE_A3);
+
+ if (wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A3_ACK,
+ "Wait A3 Ack failed"))
+ return -1;
+
+ return 0;
+}
+
+static int cdns_hdptx_hdmi_phy_on(struct phy *phy)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
+
+ return hdptx_hdmi_phy_power_up(cdns_phy);
+}
+
+static int cdns_hdptx_hdmi_phy_off(struct phy *phy)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
+
+ hdptx_hdmi_phy_power_down(cdns_phy);
+ return 0;
+}
+
+int cdns_hdptx_hdmi_phy_valid(struct phy *phy, enum phy_mode mode, int submode,
+ union phy_configure_opts *opts)
+{
+ u32 rate = opts->hdmi.pixel_clk_rate;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++)
+ if (rate == pixel_clk_output_ctrl_table[i].pixel_clk_freq_min)
+ return 0;
+
+ return -EINVAL;
+}
+
+static int cdns_hdptx_hdmi_phy_init(struct phy *phy)
+{
+ return 0;
+}
+
+static int cdns_hdptx_hdmi_configure(struct phy *phy,
+ union phy_configure_opts *opts)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = phy_get_drvdata(phy);
+ int ret;
+
+ cdns_phy->pixel_clk_rate = opts->hdmi.pixel_clk_rate;
+ cdns_phy->color_space = opts->hdmi.color_space;
+ cdns_phy->bpc = opts->hdmi.bpc;
+
+ /* Check HDMI FW alive before HDMI PHY init */
+ ret = hdptx_phy_check_alive(cdns_phy);
+ if (!ret) {
+ dev_err(cdns_phy->dev, "NO HDMI FW running\n");
+ return -ENXIO;
+ }
+
+ /* Configure PHY */
+ if (hdptx_hdmi_phy_cfg(cdns_phy, cdns_phy->pixel_clk_rate) < 0) {
+ dev_err(cdns_phy->dev, "failed to set phy pclock\n");
+ return -EINVAL;
+ }
+
+ ret = hdptx_hdmi_phy_power_up(cdns_phy);
+ if (ret < 0)
+ return ret;
+
+ hdptx_hdmi_phy_set_vswing(cdns_phy);
+
+ return 0;
+}
+
+static const struct phy_ops cdns_hdptx_hdmi_phy_ops = {
+ .init = cdns_hdptx_hdmi_phy_init,
+ .configure = cdns_hdptx_hdmi_configure,
+ .power_on = cdns_hdptx_hdmi_phy_on,
+ .power_off = cdns_hdptx_hdmi_phy_off,
+ .validate = cdns_hdptx_hdmi_phy_valid,
+ .owner = THIS_MODULE,
+};
+
+static int cdns_hdptx_hdmi_phy_probe(struct platform_device *pdev)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
+ struct phy_provider *phy_provider;
+ struct resource *res;
+ struct phy *phy;
+ int ret;
+
+ cdns_phy = devm_kzalloc(dev, sizeof(*cdns_phy), GFP_KERNEL);
+ if (!cdns_phy)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, cdns_phy);
+ cdns_phy->dev = dev;
+ mutex_init(&cdns_phy->mbox_mutex);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ cdns_phy->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (IS_ERR(cdns_phy->regs))
+ return PTR_ERR(cdns_phy->regs);
+
+ phy = devm_phy_create(dev, node, &cdns_hdptx_hdmi_phy_ops);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ phy->attrs.mode = PHY_MODE_HDMI;
+
+ cdns_phy->phy = phy;
+ phy_set_drvdata(phy, cdns_phy);
+
+ ret = hdptx_hdmi_clk_enable(cdns_phy);
+ if (ret) {
+ dev_err(dev, "Init clk fail\n");
+ return -EINVAL;
+ }
+
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+ if (IS_ERR(phy_provider)) {
+ ret = PTR_ERR(phy_provider);
+ goto clk_disable;
+ }
+
+ dev_dbg(dev, "probe success!\n");
+
+ return 0;
+
+clk_disable:
+ hdptx_hdmi_clk_disable(cdns_phy);
+
+ return -EINVAL;
+}
+
+static int cdns_hdptx_hdmi_phy_remove(struct platform_device *pdev)
+{
+ struct cdns_hdptx_hdmi_phy *cdns_phy = platform_get_drvdata(pdev);
+
+ hdptx_hdmi_clk_disable(cdns_phy);
+
+ return 0;
+}
+
+static const struct of_device_id cdns_hdptx_hdmi_phy_of_match[] = {
+ {.compatible = "fsl,imx8mq-hdmi-phy" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, cdns_hdptx_hdmi_phy_of_match);
+
+static struct platform_driver cdns_hdptx_hdmi_phy_driver = {
+ .probe = cdns_hdptx_hdmi_phy_probe,
+ .remove = cdns_hdptx_hdmi_phy_remove,
+ .driver = {
+ .name = "cdns-hdptx-hdmi-phy",
+ .of_match_table = cdns_hdptx_hdmi_phy_of_match,
+ }
+};
+module_platform_driver(cdns_hdptx_hdmi_phy_driver);
+
+MODULE_AUTHOR("Sandor Yu <sandor.yu@xxxxxxx>");
+MODULE_DESCRIPTION("Cadence HDP-TX HDMI PHY driver");
+MODULE_LICENSE("GPL");
--
2.34.1