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Cadence HDP-TX PHY could be put in either DP mode or HDMI mode base on the configuration chosen. DisplayPort or HDMI PHY mode is configured in the driver. Signed-off-by: Sandor Yu Signed-off-by: Alexander Stein --- v19->v20: - implify DP configuration handling by directly copying the configuration options to the driver's internal structure. - return the error code directly instead of logging an error message in `hdptx_clk_enable` - Remove redundant ref_clk_rate check v18->v19: - Simplify the PLL tables by removing unused and constant data - Remove PHY power management, controller driver will handle them. - Remove enum dp_link_rate - Introduce read_pll_timeout. - Update clock management as devm_clk_get_enabled() introduced. - Remove cdns_hdptx_phy_init() and cdns_hdptx_phy_remove(). v17->v18: - fix build error as code rebase to latest kernel version. drivers/phy/freescale/Kconfig | 10 + drivers/phy/freescale/Makefile | 1 + drivers/phy/freescale/phy-fsl-imx8mq-hdptx.c | 1231 ++++++++++++++++++ 3 files changed, 1242 insertions(+) create mode 100644 drivers/phy/freescale/phy-fsl-imx8mq-hdptx.c diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig index dcd9acff6d01a..2b1210367b31c 100644 --- a/drivers/phy/freescale/Kconfig +++ b/drivers/phy/freescale/Kconfig @@ -35,6 +35,16 @@ config PHY_FSL_IMX8M_PCIE Enable this to add support for the PCIE PHY as found on i.MX8M family of SOCs. +config PHY_FSL_IMX8MQ_HDPTX + tristate "Freescale i.MX8MQ DP/HDMI PHY support" + depends on OF && HAS_IOMEM + depends on COMMON_CLK + select GENERIC_PHY + select CDNS_MHDP_HELPER + help + Enable this to support the Cadence HDPTX DP/HDMI PHY driver + on i.MX8MQ SOC. + config PHY_FSL_IMX8QM_HSIO tristate "Freescale i.MX8QM HSIO PHY" depends on OF && HAS_IOMEM diff --git a/drivers/phy/freescale/Makefile b/drivers/phy/freescale/Makefile index 658eac7d0a622..a946b87905498 100644 --- a/drivers/phy/freescale/Makefile +++ b/drivers/phy/freescale/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_PHY_FSL_IMX8MQ_HDPTX) += phy-fsl-imx8mq-hdptx.o obj-$(CONFIG_PHY_FSL_IMX8MQ_USB) += phy-fsl-imx8mq-usb.o obj-$(CONFIG_PHY_MIXEL_LVDS_PHY) += phy-fsl-imx8qm-lvds-phy.o obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o diff --git a/drivers/phy/freescale/phy-fsl-imx8mq-hdptx.c b/drivers/phy/freescale/phy-fsl-imx8mq-hdptx.c new file mode 100644 index 0000000000000..230b7148639b2 --- /dev/null +++ b/drivers/phy/freescale/phy-fsl-imx8mq-hdptx.c @@ -0,0 +1,1231 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Cadence DP/HDMI PHY driver + * + * Copyright (C) 2022-2024 NXP Semiconductor, Inc. + */ +#include +#include +#include +#include +#include +#include +#include + +#define ADDR_PHY_AFE 0x80000 + +/* PHY registers */ +#define CMN_SSM_BIAS_TMR 0x0022 +#define CMN_PLLSM0_PLLEN_TMR 0x0029 +#define CMN_PLLSM0_PLLPRE_TMR 0x002a +#define CMN_PLLSM0_PLLVREF_TMR 0x002b +#define CMN_PLLSM0_PLLLOCK_TMR 0x002c +#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_PLL0_INTDIV 0x0094 +#define CMN_PLL0_FRACDIV 0x0095 +#define CMN_PLL0_HIGH_THR 0x0096 +#define CMN_PLL0_DSM_DIAG 0x0097 +#define CMN_PLL0_SS_CTRL2 0x0099 +#define CMN_ICAL_INIT_TMR 0x00c4 +#define CMN_ICAL_ITER_TMR 0x00c5 +#define CMN_RXCAL_INIT_TMR 0x00d4 +#define CMN_RXCAL_ITER_TMR 0x00d5 +#define CMN_TXPUCAL_CTRL 0x00e0 +#define CMN_TXPUCAL_INIT_TMR 0x00e4 +#define CMN_TXPUCAL_ITER_TMR 0x00e5 +#define CMN_TXPDCAL_CTRL 0x00f0 +#define CMN_TXPDCAL_INIT_TMR 0x00f4 +#define CMN_TXPDCAL_ITER_TMR 0x00f5 +#define CMN_ICAL_ADJ_INIT_TMR 0x0102 +#define CMN_ICAL_ADJ_ITER_TMR 0x0103 +#define CMN_RX_ADJ_INIT_TMR 0x0106 +#define CMN_RX_ADJ_ITER_TMR 0x0107 +#define CMN_TXPU_ADJ_CTRL 0x0108 +#define CMN_TXPU_ADJ_INIT_TMR 0x010a +#define CMN_TXPU_ADJ_ITER_TMR 0x010b +#define CMN_TXPD_ADJ_CTRL 0x010c +#define CMN_TXPD_ADJ_INIT_TMR 0x010e +#define CMN_TXPD_ADJ_ITER_TMR 0x010f +#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 CMN_DIAG_PER_CAL_ADJ 0x01ec +#define CMN_DIAG_CAL_CTRL 0x01ed +#define CMN_DIAG_ACYA 0x01ff +#define XCVR_PSM_RCTRL 0x4001 +#define XCVR_PSM_CAL_TMR 0x4002 +#define XCVR_PSM_A0IN_TMR 0x4003 +#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_HSCLK_SEL 0x40e1 +#define XCVR_DIAG_BIDI_CTRL 0x40e8 +#define XCVR_DIAG_LANE_FCM_EN_MGN_TMR 0x40f2 +#define TX_PSC_A0 0x4100 +#define TX_PSC_A1 0x4101 +#define TX_PSC_A2 0x4102 +#define TX_PSC_A3 0x4103 +#define TX_RCVDET_EN_TMR 0x4122 +#define TX_RCVDET_ST_TMR 0x4123 +#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_1 0x5023 +#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 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) +#define HSCLK_PLL0_DIV2 1 + +/* 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) +#define DPLL_DATA_RATE_DIV_MODE3_MASK GENMASK(13, 12) + +/* 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 + +/* FW check alive timeout */ +#define CDNS_KEEP_ALIVE_TIMEOUT 2000 +#define CDNS_KEEP_ALIVE_MASK GENMASK(7, 0) + +#define REF_CLK_27MHZ 27000000 + +#define LINK_RATE_2_7 270000 +#define MAX_LINK_RATE 540000 + +#define CMN_REF_CLK_DIG_DIV 1 +#define REF_CLK_DIVIDER_SCALER 1 + +/* HDMI TX clock control settings */ +struct hdptx_hdmi_ctrl { + u32 pixel_clk_freq; + u32 feedback_factor; + u32 cmnda_pll0_ip_div; + u32 pll_fb_div_total; + u32 cmnda_pll0_fb_div_low; + u32 cmnda_pll0_fb_div_high; + u32 cmnda_pll0_pxdiv_low; + u32 cmnda_pll0_pxdiv_high; + u32 vco_ring_select; + u32 cmnda_hs_clk_0_sel; + u32 cmnda_hs_clk_1_sel; + u32 hsclk_div_tx_sub_rate; + u32 cmnda_pll0_hs_sym_div_sel; +}; + +struct cdns_hdptx_phy { + struct cdns_mhdp_base base; + + void __iomem *regs; /* DPTX registers base */ + struct device *dev; + struct phy *phy; + struct clk *ref_clk, *apb_clk; + u32 ref_clk_rate; + union { + struct phy_configure_opts_hdmi hdmi; + struct phy_configure_opts_dp dp; + }; +}; + +/* HDMI TX clock control settings, pixel clock is output */ +static const struct hdptx_hdmi_ctrl pixel_clk_output_ctrl_table[] = { + /* clk fbak ipd totl div_l div_h pd_l pd_h v h1 h2 sub sym*/ + { 27000, 1000, 3, 240, 0x0bc, 0x30, 0x26, 0x26, 0, 2, 2, 4, 3 }, + { 27000, 1250, 3, 300, 0x0ec, 0x3c, 0x30, 0x30, 0, 2, 2, 4, 3 }, + { 27000, 1500, 3, 360, 0x11c, 0x48, 0x3a, 0x3a, 0, 2, 2, 4, 3 }, + { 27000, 2000, 3, 240, 0x0bc, 0x30, 0x26, 0x26, 0, 2, 2, 4, 2 }, + { 54000, 1000, 3, 480, 0x17c, 0x60, 0x26, 0x26, 1, 2, 2, 4, 3 }, + { 54000, 1250, 4, 400, 0x13c, 0x50, 0x17, 0x17, 0, 1, 1, 4, 2 }, + { 54000, 1500, 4, 480, 0x17c, 0x60, 0x1c, 0x1c, 0, 2, 2, 2, 2 }, + { 54000, 2000, 3, 240, 0x0bc, 0x30, 0x12, 0x12, 0, 2, 2, 1, 1 }, + { 74250, 1000, 3, 660, 0x20c, 0x84, 0x26, 0x26, 1, 2, 2, 4, 3 }, + { 74250, 1250, 4, 550, 0x1b4, 0x6e, 0x17, 0x17, 1, 1, 1, 4, 2 }, + { 74250, 1500, 4, 660, 0x20c, 0x84, 0x1c, 0x1c, 1, 2, 2, 2, 2 }, + { 74250, 2000, 3, 330, 0x104, 0x42, 0x12, 0x12, 0, 2, 2, 1, 1 }, + { 99000, 1000, 3, 440, 0x15c, 0x58, 0x12, 0x12, 1, 2, 2, 2, 2 }, + { 99000, 1250, 3, 275, 0x0d8, 0x37, 0x0b, 0x0a, 0, 1, 1, 2, 1 }, + { 99000, 1500, 3, 330, 0x104, 0x42, 0x0d, 0x0d, 0, 2, 2, 1, 1 }, + { 99000, 2000, 3, 440, 0x15c, 0x58, 0x12, 0x12, 1, 2, 2, 1, 1 }, + { 148500, 1000, 3, 660, 0x20c, 0x84, 0x12, 0x12, 1, 2, 2, 2, 2 }, + { 148500, 1250, 4, 550, 0x1b4, 0x6e, 0x0b, 0x0a, 1, 1, 1, 2, 1 }, + { 148500, 1500, 3, 495, 0x188, 0x63, 0x0d, 0x0d, 1, 1, 1, 2, 1 }, + { 148500, 2000, 3, 660, 0x20c, 0x84, 0x12, 0x12, 1, 2, 2, 1, 1 }, + { 198000, 1000, 3, 220, 0x0ac, 0x2c, 0x03, 0x03, 0, 1, 1, 1, 0 }, + { 198000, 1250, 3, 550, 0x1b4, 0x6e, 0x0b, 0x0a, 1, 1, 1, 2, 1 }, + { 198000, 1500, 3, 330, 0x104, 0x42, 0x06, 0x05, 0, 1, 1, 1, 0 }, + { 198000, 2000, 3, 440, 0x15c, 0x58, 0x08, 0x08, 1, 1, 1, 1, 0 }, + { 297000, 1000, 3, 330, 0x104, 0x42, 0x03, 0x03, 0, 1, 1, 1, 0 }, + { 297000, 1500, 3, 495, 0x188, 0x63, 0x06, 0x05, 1, 1, 1, 1, 0 }, + { 297000, 2000, 3, 660, 0x20c, 0x84, 0x08, 0x08, 1, 1, 1, 1, 0 }, + { 594000, 1000, 3, 660, 0x20c, 0x84, 0x03, 0x03, 1, 1, 1, 1, 0 }, + { 594000, 750, 3, 495, 0x188, 0x63, 0x03, 0x03, 1, 1, 1, 1, 0 }, + { 594000, 625, 4, 550, 0x1b4, 0x6e, 0x03, 0x03, 1, 1, 1, 1, 0 }, + { 594000, 500, 3, 660, 0x20c, 0x84, 0x03, 0x03, 1, 1, 1, 2, 1 }, +}; + +/* HDMI TX PLL tuning settings */ +struct hdptx_hdmi_pll_tuning { + u32 vco_freq; + 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 vco_cal_code; +}; + +/* HDMI TX PLL tuning settings, pixel clock is output */ +static const struct hdptx_hdmi_pll_tuning pixel_clk_output_pll_table[] = { + /*VCO_f coar cu nd pm ptat fd_d gain cal */ + { 1980000, 4, 3, 0, 9, 0x9, 220, 0x42, 183 }, + { 2160000, 4, 3, 0, 9, 0x9, 240, 0x42, 208 }, + { 2475000, 5, 3, 1, 0, 0x7, 275, 0x42, 209 }, + { 2700000, 5, 3, 1, 0, 0x7, 300, 0x42, 230 }, + { 2700000, 5, 3, 1, 0, 0x7, 400, 0x4c, 230 }, + { 2970000, 6, 3, 1, 0, 0x7, 330, 0x42, 225 }, + { 3240000, 6, 3, 1, 0, 0x7, 360, 0x42, 256 }, + { 3240000, 6, 3, 1, 0, 0x7, 480, 0x4c, 256 }, + { 3712500, 4, 3, 0, 7, 0xF, 550, 0x4c, 257 }, + { 3960000, 5, 3, 0, 7, 0xF, 440, 0x42, 226 }, + { 4320000, 5, 3, 1, 7, 0xF, 480, 0x42, 258 }, + { 4455000, 5, 3, 0, 7, 0xF, 495, 0x42, 272 }, + { 4455000, 5, 3, 0, 7, 0xF, 660, 0x4c, 272 }, + { 4950000, 6, 3, 1, 0, 0x7, 550, 0x42, 258 }, + { 5940000, 7, 3, 1, 0, 0x7, 660, 0x42, 292 }, +}; + +struct phy_pll_reg { + u16 val[7]; + u32 addr; +}; + +static const struct phy_pll_reg phy_pll_27m_cfg[] = { + /* 1.62 2.16 2.43 2.7 3.24 4.32 5.4 register address */ + {{ 0x010e, 0x010e, 0x010e, 0x010e, 0x010e, 0x010e, 0x010e }, CMN_PLL0_VCOCAL_INIT_TMR }, + {{ 0x001b, 0x001b, 0x001b, 0x001b, 0x001b, 0x001b, 0x001b }, CMN_PLL0_VCOCAL_ITER_TMR }, + {{ 0x30b9, 0x3087, 0x3096, 0x30b4, 0x30b9, 0x3087, 0x30b4 }, CMN_PLL0_VCOCAL_START }, + {{ 0x0077, 0x009f, 0x00b3, 0x00c7, 0x0077, 0x009f, 0x00c7 }, CMN_PLL0_INTDIV }, + {{ 0xf9da, 0xf7cd, 0xf6c7, 0xf5c1, 0xf9da, 0xf7cd, 0xf5c1 }, CMN_PLL0_FRACDIV }, + {{ 0x001e, 0x0028, 0x002d, 0x0032, 0x001e, 0x0028, 0x0032 }, CMN_PLL0_HIGH_THR }, + {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 }, CMN_PLL0_DSM_DIAG }, + {{ 0x0000, 0x1000, 0x1000, 0x1000, 0x0000, 0x1000, 0x1000 }, CMN_PLLSM0_USER_DEF_CTRL }, + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_OVRD }, + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_FBH_OVRD }, + {{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }, CMN_DIAG_PLL0_FBL_OVRD }, + {{ 0x0006, 0x0007, 0x0007, 0x0007, 0x0006, 0x0007, 0x0007 }, CMN_DIAG_PLL0_V2I_TUNE }, + {{ 0x0043, 0x0043, 0x0043, 0x0042, 0x0043, 0x0043, 0x0042 }, CMN_DIAG_PLL0_CP_TUNE }, + {{ 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008, 0x0008 }, CMN_DIAG_PLL0_LF_PROG }, + {{ 0x0100, 0x0001, 0x0001, 0x0001, 0x0100, 0x0001, 0x0001 }, CMN_DIAG_PLL0_PTATIS_TUNE1 }, + {{ 0x0007, 0x0001, 0x0001, 0x0001, 0x0007, 0x0001, 0x0001 }, CMN_DIAG_PLL0_PTATIS_TUNE2 }, + {{ 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020 }, CMN_DIAG_PLL0_TEST_MODE}, + {{ 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016, 0x0016 }, CMN_PSM_CLK_CTRL } +}; + +static int dp_link_rate_index(u32 rate) +{ + switch (rate) { + case 162000: + return 0; + case 216000: + return 1; + case 243000: + return 2; + case 270000: + return 3; + case 324000: + return 4; + case 432000: + return 5; + case 540000: + return 6; + default: + return -EINVAL; + } +} + +static int cdns_phy_reg_write(struct cdns_hdptx_phy *cdns_phy, u32 addr, u32 val) +{ + return cdns_mhdp_reg_write(&cdns_phy->base, ADDR_PHY_AFE + (addr << 2), val); +} + +static u32 cdns_phy_reg_read(struct cdns_hdptx_phy *cdns_phy, u32 addr) +{ + u32 reg32; + + cdns_mhdp_reg_read(&cdns_phy->base, ADDR_PHY_AFE + (addr << 2), ®32); + + return reg32; +} + +static void hdptx_dp_aux_cfg(struct cdns_hdptx_phy *cdns_phy) +{ + /* Power up Aux */ + cdns_phy_reg_write(cdns_phy, TXDA_CYA_AUXDA_CYA, 1); + + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_1, 0x3); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_DIG_CTRL_REG_2, 36); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0100); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x0300); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_3, 0x0000); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2008); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0x2018); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xa018); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030c); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_5, 0x0000); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_4, 0x1001); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xa098); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_1, 0xa198); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030d); + ndelay(150); + cdns_phy_reg_write(cdns_phy, TX_ANA_CTRL_REG_2, 0x030f); +} + +/* PMA common configuration for 27MHz */ +static void hdptx_dp_phy_pma_cmn_cfg_27mhz(struct cdns_hdptx_phy *cdns_phy) +{ + u32 num_lanes = cdns_phy->dp.lanes; + u16 val; + int k; + + /* Enable PMA input ref clk(CMN_REF_CLK_RCV_EN) */ + 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); + + /* Startup state machine registers */ + cdns_phy_reg_write(cdns_phy, CMN_SSM_BIAS_TMR, 0x0087); + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLEN_TMR, 0x001b); + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLPRE_TMR, 0x0036); + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLVREF_TMR, 0x001b); + cdns_phy_reg_write(cdns_phy, CMN_PLLSM0_PLLLOCK_TMR, 0x006c); + + /* Current calibration registers */ + cdns_phy_reg_write(cdns_phy, CMN_ICAL_INIT_TMR, 0x0044); + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ITER_TMR, 0x0006); + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_ICAL_ADJ_ITER_TMR, 0x0006); + + /* Resistor calibration registers */ + cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_TXPUCAL_ITER_TMR, 0x0006); + cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_TXPU_ADJ_ITER_TMR, 0x0006); + cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_TXPDCAL_ITER_TMR, 0x0006); + cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_TXPD_ADJ_ITER_TMR, 0x0006); + cdns_phy_reg_write(cdns_phy, CMN_RXCAL_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_RXCAL_ITER_TMR, 0x0006); + cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_INIT_TMR, 0x0022); + cdns_phy_reg_write(cdns_phy, CMN_RX_ADJ_ITER_TMR, 0x0006); + + for (k = 0; k < num_lanes; k = k + 1) { + /* Power state machine registers */ + cdns_phy_reg_write(cdns_phy, XCVR_PSM_CAL_TMR | (k << 9), 0x016d); + cdns_phy_reg_write(cdns_phy, XCVR_PSM_A0IN_TMR | (k << 9), 0x016d); + /* Transceiver control and diagnostic registers */ + cdns_phy_reg_write(cdns_phy, XCVR_DIAG_LANE_FCM_EN_MGN_TMR | (k << 9), 0x00a2); + cdns_phy_reg_write(cdns_phy, TX_DIAG_BGREF_PREDRV_DELAY | (k << 9), 0x0097); + /* Transmitter receiver detect registers */ + cdns_phy_reg_write(cdns_phy, TX_RCVDET_EN_TMR | (k << 9), 0x0a8c); + cdns_phy_reg_write(cdns_phy, TX_RCVDET_ST_TMR | (k << 9), 0x0036); + } + + 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); +} + +static void hdptx_dp_phy_pma_cmn_pll0_27mhz(struct cdns_hdptx_phy *cdns_phy) +{ + u32 num_lanes = cdns_phy->dp.lanes; + u32 link_rate = cdns_phy->dp.link_rate; + u16 val; + int index, i, k; + + /* DP PLL data rate 0/1 clock divider value */ + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL); + val &= ~PLL_DATA_RATE_CLK_DIV_MASK; + if (link_rate <= LINK_RATE_2_7) + val |= FIELD_PREP(PLL_DATA_RATE_CLK_DIV_MASK, + PLL_DATA_RATE_CLK_DIV_HBR); + else + 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); + + /* High speed clock 0/1 div */ + val = cdns_phy_reg_read(cdns_phy, CMN_DIAG_HSCLK_SEL); + val &= ~(HSCLK1_SEL_MASK | HSCLK0_SEL_MASK); + if (link_rate <= LINK_RATE_2_7) { + val |= FIELD_PREP(HSCLK1_SEL_MASK, HSCLK_PLL0_DIV2); + val |= FIELD_PREP(HSCLK0_SEL_MASK, HSCLK_PLL0_DIV2); + } + 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; + if (link_rate <= LINK_RATE_2_7) + val |= FIELD_PREP(HSCLK_SEL_MODE3_MASK, HSCLK_SEL_MODE3_HSCLK1); + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_HSCLK_SEL | (k << 9)), val); + } + + /* DP PHY PLL 27MHz configuration */ + index = dp_link_rate_index(link_rate); + if (index < 0) { + dev_err(cdns_phy->dev, "Not support link rate %d\n", link_rate); + return; + } + + for (i = 0; i < ARRAY_SIZE(phy_pll_27m_cfg); i++) + cdns_phy_reg_write(cdns_phy, phy_pll_27m_cfg[i].addr, + phy_pll_27m_cfg[i].val[index]); + + /* 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_DATA_RATE_DIV_MODE3_MASK | DPLL_CLK_SEL_MODE3); + if (link_rate <= LINK_RATE_2_7) + val |= FIELD_PREP(DPLL_DATA_RATE_DIV_MODE3_MASK, 2); + else + val |= FIELD_PREP(DPLL_DATA_RATE_DIV_MODE3_MASK, 1); + cdns_phy_reg_write(cdns_phy, (XCVR_DIAG_PLLDRC_CTRL | (k << 9)), val); + } + + for (k = 0; k < num_lanes; k = k + 1) { + /* Power state machine registers */ + cdns_phy_reg_write(cdns_phy, (XCVR_PSM_RCTRL | (k << 9)), 0xbefc); + cdns_phy_reg_write(cdns_phy, (TX_PSC_A0 | (k << 9)), 0x6799); + cdns_phy_reg_write(cdns_phy, (TX_PSC_A1 | (k << 9)), 0x6798); + cdns_phy_reg_write(cdns_phy, (TX_PSC_A2 | (k << 9)), 0x0098); + cdns_phy_reg_write(cdns_phy, (TX_PSC_A3 | (k << 9)), 0x0098); + /* Receiver calibration power state definition register */ + 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); + } +} + +static void hdptx_dp_phy_ref_clock_type(struct cdns_hdptx_phy *cdns_phy) +{ + u32 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); +} + +static int wait_for_ack(struct cdns_hdptx_phy *cdns_phy, + u32 reg, u32 mask, + const char *err_msg) +{ + int ret; + u32 val; + + ret = read_poll_timeout(cdns_phy_reg_read, + val, val & mask, 20, 1000, + false, cdns_phy, reg); + if (ret < 0) + dev_err(cdns_phy->dev, "%s\n", err_msg); + + return ret; +} + +static int wait_for_ack_clear(struct cdns_hdptx_phy *cdns_phy, + u32 reg, u32 mask, + const char *err_msg) +{ + int ret; + u32 val; + + ret = read_poll_timeout(cdns_phy_reg_read, + val, !(val & mask), 20, 1000, + false, cdns_phy, reg); + if (ret < 0) + dev_err(cdns_phy->dev, "%s\n", err_msg); + + return ret; +} + +static int hdptx_dp_phy_power_up(struct cdns_hdptx_phy *cdns_phy) +{ + u32 val; + int ret; + + /* Enable HDP PLL's for high speed clocks */ + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL); + val |= PLL_EN; + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val); + ret = wait_for_ack(cdns_phy, PHY_HDP_CLK_CTL, PLL_READY, + "Wait PLL Ack failed"); + if (ret < 0) + return ret; + + /* Enable HDP PLL's data rate and full rate clocks out of PMA. */ + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL); + val |= PLL_CLK_EN; + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val); + ret = wait_for_ack(cdns_phy, PHY_HDP_CLK_CTL, PLL_CLK_EN_ACK, + "Wait PLL clock enable ACK failed"); + if (ret < 0) + return ret; + + /* Configure PHY in A2 Mode */ + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A2); + ret = wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A2_ACK, + "Wait A2 Ack failed"); + if (ret < 0) + return ret; + + /* 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); + + return wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A0_ACK, + "Wait A0 Ack failed"); +} + +static int hdptx_dp_phy_power_down(struct cdns_hdptx_phy *cdns_phy) +{ + u16 val; + int ret; + + /* Place the PHY lanes in the A3 power state. */ + cdns_phy_reg_write(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A3); + ret = wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A3_ACK, + "Wait A3 Ack failed"); + if (ret) + return ret; + + /* Disable HDP PLL's data rate and full rate clocks out of PMA. */ + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL); + val &= ~PLL_CLK_EN; + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val); + ret = wait_for_ack_clear(cdns_phy, PHY_HDP_CLK_CTL, PLL_CLK_EN_ACK, + "Wait PLL clock Ack clear failed"); + if (ret) + return ret; + + /* Disable HDP PLL's for high speed clocks */ + val = cdns_phy_reg_read(cdns_phy, PHY_HDP_CLK_CTL); + val &= ~PLL_EN; + cdns_phy_reg_write(cdns_phy, PHY_HDP_CLK_CTL, val); + + return wait_for_ack_clear(cdns_phy, PHY_HDP_CLK_CTL, PLL_READY, + "Wait PLL Ack clear failed"); +} + +static int hdptx_dp_configure(struct phy *phy, + union phy_configure_opts *opts) +{ + const struct phy_configure_opts_dp *dp_opts = &opts->dp; + struct cdns_hdptx_phy *cdns_phy = phy_get_drvdata(phy); + + if (opts->dp.link_rate > MAX_LINK_RATE) { + dev_err(cdns_phy->dev, "Link Rate(%d) Not supported\n", opts->dp.link_rate); + return false; + } + + memcpy(&cdns_phy->dp, dp_opts, sizeof(*dp_opts)); + + hdptx_dp_phy_pma_cmn_cfg_27mhz(cdns_phy); + hdptx_dp_phy_pma_cmn_pll0_27mhz(cdns_phy); + + return 0; +} + +static int hdptx_clk_enable(struct cdns_hdptx_phy *cdns_phy) +{ + struct device *dev = cdns_phy->dev; + u32 ref_clk_rate; + + cdns_phy->ref_clk = devm_clk_get_enabled(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); + } + + 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"); + return -EINVAL; + } + + 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); + return -EINVAL; + } + + cdns_phy->apb_clk = devm_clk_get_enabled(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); + } + + return 0; +} + +static void hdptx_hdmi_arc_config(struct cdns_hdptx_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_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_phy_config(struct cdns_hdptx_phy *cdns_phy, + const struct hdptx_hdmi_ctrl *p_ctrl_table, + const struct hdptx_hdmi_pll_tuning *p_pll_table, + bool pclk_in) +{ + const u32 num_lanes = 4; + u32 val, k; + int ret; + + /* 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, 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, 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 */ + ret = wait_for_ack(cdns_phy, PHY_PMA_ISO_CMN_CTRL, CMN_MACRO_PWR_EN_ACK, + "MA output macro power up failed"); + if (ret < 0) + return ret; + + /* wait for cmn_ready */ + ret = wait_for_ack(cdns_phy, PHY_PMA_CMN_CTRL1, CMN_READY, + "PMA output ready failed"); + if (ret < 0) + return ret; + + 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_phy *cdns_phy, unsigned long long char_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 bool pclk_in = false; + u32 char_rate_khz = char_rate / 1000; + u32 vco_freq, rate; + u32 div_total, i; + + dev_dbg(cdns_phy->dev, "character clock: %d KHz\n ", char_rate_khz); + + /* Get right row from the ctrl_table table. + * check the character rate. + */ + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++) { + rate = pixel_clk_output_ctrl_table[i].feedback_factor * + pixel_clk_output_ctrl_table[i].pixel_clk_freq / 1000; + if (char_rate_khz == rate) { + p_ctrl_table = &pixel_clk_output_ctrl_table[i]; + break; + } + } + if (i == ARRAY_SIZE(pixel_clk_output_ctrl_table)) { + dev_warn(cdns_phy->dev, + "char clk (%d KHz) not supported\n", char_rate_khz); + return -EINVAL; + } + + 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 && + 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 -EINVAL; + } + dev_dbg(cdns_phy->dev, "VCO frequency is (%d KHz)\n", vco_freq); + + return hdptx_hdmi_phy_config(cdns_phy, p_ctrl_table, p_pll_table, pclk_in); +} + +static int hdptx_hdmi_phy_power_up(struct cdns_hdptx_phy *cdns_phy) +{ + int ret; + + /* 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); + + ret = wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A2_ACK, + "Wait A2 Ack failed"); + if (ret < 0) + return ret; + + /* 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); + + return wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A0_ACK, + "Wait A0 Ack failed"); +} + +static int hdptx_hdmi_phy_power_down(struct cdns_hdptx_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); + + return wait_for_ack(cdns_phy, PHY_HDP_MODE_CTRL, POWER_STATE_A3_ACK, + "Wait A3 Ack failed"); +} + +static int hdptx_hdmi_configure(struct phy *phy, + union phy_configure_opts *opts) +{ + struct cdns_hdptx_phy *cdns_phy = phy_get_drvdata(phy); + u32 reg; + int ret; + + cdns_phy->hdmi.tmds_char_rate = opts->hdmi.tmds_char_rate; + + /* Check HDMI FW alive before HDMI PHY init */ + ret = readl_poll_timeout(cdns_phy->regs + KEEP_ALIVE, reg, + reg & CDNS_KEEP_ALIVE_MASK, 500, + CDNS_KEEP_ALIVE_TIMEOUT); + if (ret < 0) { + dev_err(cdns_phy->dev, "NO HDMI FW running\n"); + return -ENXIO; + } + + /* Configure PHY */ + if (hdptx_hdmi_phy_cfg(cdns_phy, cdns_phy->hdmi.tmds_char_rate) < 0) { + dev_err(cdns_phy->dev, "failed to set phy pclock\n"); + return -EINVAL; + } + + hdptx_hdmi_phy_set_vswing(cdns_phy); + + return 0; +} + +static int cdns_hdptx_phy_on(struct phy *phy) +{ + struct cdns_hdptx_phy *cdns_phy = phy_get_drvdata(phy); + + if (phy->attrs.mode == PHY_MODE_DP) + return hdptx_dp_phy_power_up(cdns_phy); + else + return hdptx_hdmi_phy_power_up(cdns_phy); +} + +static int cdns_hdptx_phy_off(struct phy *phy) +{ + struct cdns_hdptx_phy *cdns_phy = phy_get_drvdata(phy); + + if (phy->attrs.mode == PHY_MODE_DP) + return hdptx_dp_phy_power_down(cdns_phy); + else + return hdptx_hdmi_phy_power_down(cdns_phy); +} + +static int +cdns_hdptx_phy_valid(struct phy *phy, enum phy_mode mode, + int submode, union phy_configure_opts *opts) +{ + u32 rate = opts->hdmi.tmds_char_rate / 1000; + int i; + + if (mode == PHY_MODE_DP) + return 0; + + for (i = 0; i < ARRAY_SIZE(pixel_clk_output_ctrl_table); i++) + if (rate == pixel_clk_output_ctrl_table[i].pixel_clk_freq) + return 0; + + return -EINVAL; +} + +static int cdns_hdptx_phy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct cdns_hdptx_phy *cdns_phy = phy_get_drvdata(phy); + int ret = 0; + + if (mode == PHY_MODE_DP) { + hdptx_dp_phy_ref_clock_type(cdns_phy); + hdptx_dp_aux_cfg(cdns_phy); + } else if (mode != PHY_MODE_HDMI) { + dev_err(&phy->dev, "Invalid PHY mode: %u\n", mode); + return -EINVAL; + } + + return ret; +} + +static int cdns_hdptx_configure(struct phy *phy, + union phy_configure_opts *opts) +{ + if (phy->attrs.mode == PHY_MODE_DP) + return hdptx_dp_configure(phy, opts); + else + return hdptx_hdmi_configure(phy, opts); +} + +static const struct phy_ops cdns_hdptx_phy_ops = { + .set_mode = cdns_hdptx_phy_set_mode, + .configure = cdns_hdptx_configure, + .power_on = cdns_hdptx_phy_on, + .power_off = cdns_hdptx_phy_off, + .validate = cdns_hdptx_phy_valid, + .owner = THIS_MODULE, +}; + +static int cdns_hdptx_phy_probe(struct platform_device *pdev) +{ + struct cdns_hdptx_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; + + 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_phy_ops); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + cdns_phy->phy = phy; + phy_set_drvdata(phy, cdns_phy); + + /* init base struct for access mhdp mailbox */ + cdns_phy->base.dev = cdns_phy->dev; + cdns_phy->base.regs = cdns_phy->regs; + + ret = hdptx_clk_enable(cdns_phy); + if (ret) + return -EINVAL; + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(phy_provider)) + return PTR_ERR(phy_provider); + + return 0; +} + +static const struct of_device_id cdns_hdptx_phy_of_match[] = { + {.compatible = "fsl,imx8mq-hdptx-phy" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, cdns_hdptx_phy_of_match); + +static struct platform_driver cdns_hdptx_phy_driver = { + .probe = cdns_hdptx_phy_probe, + .driver = { + .name = "cdns-hdptx-phy", + .of_match_table = cdns_hdptx_phy_of_match, + } +}; +module_platform_driver(cdns_hdptx_phy_driver); + +MODULE_AUTHOR("Sandor Yu "); +MODULE_DESCRIPTION("Cadence HDP-TX DP/HDMI PHY driver"); +MODULE_LICENSE("GPL");