Merge tag 'io_uring-5.11-2021-01-16' of git://git.kernel.dk/linux-block

[linux/fpc-iii.git] / drivers / phy / rockchip / phy-rockchip-inno-hdmi.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2017 Rockchip Electronics Co. Ltd.
 *
 * Author: Zheng Yang <zhengyang@rock-chips.com>
 *         Heiko Stuebner <heiko@sntech.de>
 */

#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/phy/phy.h>
#include <linux/slab.h>

#define UPDATE(x, h, l)         (((x) << (l)) & GENMASK((h), (l)))

/* REG: 0x00 */
#define RK3228_PRE_PLL_REFCLK_SEL_PCLK                  BIT(0)
/* REG: 0x01 */
#define RK3228_BYPASS_RXSENSE_EN                        BIT(2)
#define RK3228_BYPASS_PWRON_EN                          BIT(1)
#define RK3228_BYPASS_PLLPD_EN                          BIT(0)
/* REG: 0x02 */
#define RK3228_BYPASS_PDATA_EN                          BIT(4)
#define RK3228_PDATAEN_DISABLE                          BIT(0)
/* REG: 0x03 */
#define RK3228_BYPASS_AUTO_TERM_RES_CAL                 BIT(7)
#define RK3228_AUTO_TERM_RES_CAL_SPEED_14_8(x)          UPDATE(x, 6, 0)
/* REG: 0x04 */
#define RK3228_AUTO_TERM_RES_CAL_SPEED_7_0(x)           UPDATE(x, 7, 0)
/* REG: 0xaa */
#define RK3228_POST_PLL_CTRL_MANUAL                     BIT(0)
/* REG: 0xe0 */
#define RK3228_POST_PLL_POWER_DOWN                      BIT(5)
#define RK3228_PRE_PLL_POWER_DOWN                       BIT(4)
#define RK3228_RXSENSE_CLK_CH_ENABLE                    BIT(3)
#define RK3228_RXSENSE_DATA_CH2_ENABLE                  BIT(2)
#define RK3228_RXSENSE_DATA_CH1_ENABLE                  BIT(1)
#define RK3228_RXSENSE_DATA_CH0_ENABLE                  BIT(0)
/* REG: 0xe1 */
#define RK3228_BANDGAP_ENABLE                           BIT(4)
#define RK3228_TMDS_DRIVER_ENABLE                       GENMASK(3, 0)
/* REG: 0xe2 */
#define RK3228_PRE_PLL_FB_DIV_8_MASK                    BIT(7)
#define RK3228_PRE_PLL_FB_DIV_8(x)                      UPDATE((x) >> 8, 7, 7)
#define RK3228_PCLK_VCO_DIV_5_MASK                      BIT(5)
#define RK3228_PCLK_VCO_DIV_5(x)                        UPDATE(x, 5, 5)
#define RK3228_PRE_PLL_PRE_DIV_MASK                     GENMASK(4, 0)
#define RK3228_PRE_PLL_PRE_DIV(x)                       UPDATE(x, 4, 0)
/* REG: 0xe3 */
#define RK3228_PRE_PLL_FB_DIV_7_0(x)                    UPDATE(x, 7, 0)
/* REG: 0xe4 */
#define RK3228_PRE_PLL_PCLK_DIV_B_MASK                  GENMASK(6, 5)
#define RK3228_PRE_PLL_PCLK_DIV_B_SHIFT                 5
#define RK3228_PRE_PLL_PCLK_DIV_B(x)                    UPDATE(x, 6, 5)
#define RK3228_PRE_PLL_PCLK_DIV_A_MASK                  GENMASK(4, 0)
#define RK3228_PRE_PLL_PCLK_DIV_A(x)                    UPDATE(x, 4, 0)
/* REG: 0xe5 */
#define RK3228_PRE_PLL_PCLK_DIV_C_MASK                  GENMASK(6, 5)
#define RK3228_PRE_PLL_PCLK_DIV_C(x)                    UPDATE(x, 6, 5)
#define RK3228_PRE_PLL_PCLK_DIV_D_MASK                  GENMASK(4, 0)
#define RK3228_PRE_PLL_PCLK_DIV_D(x)                    UPDATE(x, 4, 0)
/* REG: 0xe6 */
#define RK3228_PRE_PLL_TMDSCLK_DIV_C_MASK               GENMASK(5, 4)
#define RK3228_PRE_PLL_TMDSCLK_DIV_C(x)                 UPDATE(x, 5, 4)
#define RK3228_PRE_PLL_TMDSCLK_DIV_A_MASK               GENMASK(3, 2)
#define RK3228_PRE_PLL_TMDSCLK_DIV_A(x)                 UPDATE(x, 3, 2)
#define RK3228_PRE_PLL_TMDSCLK_DIV_B_MASK               GENMASK(1, 0)
#define RK3228_PRE_PLL_TMDSCLK_DIV_B(x)                 UPDATE(x, 1, 0)
/* REG: 0xe8 */
#define RK3228_PRE_PLL_LOCK_STATUS                      BIT(0)
/* REG: 0xe9 */
#define RK3228_POST_PLL_POST_DIV_ENABLE                 UPDATE(3, 7, 6)
#define RK3228_POST_PLL_PRE_DIV_MASK                    GENMASK(4, 0)
#define RK3228_POST_PLL_PRE_DIV(x)                      UPDATE(x, 4, 0)
/* REG: 0xea */
#define RK3228_POST_PLL_FB_DIV_7_0(x)                   UPDATE(x, 7, 0)
/* REG: 0xeb */
#define RK3228_POST_PLL_FB_DIV_8_MASK                   BIT(7)
#define RK3228_POST_PLL_FB_DIV_8(x)                     UPDATE((x) >> 8, 7, 7)
#define RK3228_POST_PLL_POST_DIV_MASK                   GENMASK(5, 4)
#define RK3228_POST_PLL_POST_DIV(x)                     UPDATE(x, 5, 4)
#define RK3228_POST_PLL_LOCK_STATUS                     BIT(0)
/* REG: 0xee */
#define RK3228_TMDS_CH_TA_ENABLE                        GENMASK(7, 4)
/* REG: 0xef */
#define RK3228_TMDS_CLK_CH_TA(x)                        UPDATE(x, 7, 6)
#define RK3228_TMDS_DATA_CH2_TA(x)                      UPDATE(x, 5, 4)
#define RK3228_TMDS_DATA_CH1_TA(x)                      UPDATE(x, 3, 2)
#define RK3228_TMDS_DATA_CH0_TA(x)                      UPDATE(x, 1, 0)
/* REG: 0xf0 */
#define RK3228_TMDS_DATA_CH2_PRE_EMPHASIS_MASK          GENMASK(5, 4)
#define RK3228_TMDS_DATA_CH2_PRE_EMPHASIS(x)            UPDATE(x, 5, 4)
#define RK3228_TMDS_DATA_CH1_PRE_EMPHASIS_MASK          GENMASK(3, 2)
#define RK3228_TMDS_DATA_CH1_PRE_EMPHASIS(x)            UPDATE(x, 3, 2)
#define RK3228_TMDS_DATA_CH0_PRE_EMPHASIS_MASK          GENMASK(1, 0)
#define RK3228_TMDS_DATA_CH0_PRE_EMPHASIS(x)            UPDATE(x, 1, 0)
/* REG: 0xf1 */
#define RK3228_TMDS_CLK_CH_OUTPUT_SWING(x)              UPDATE(x, 7, 4)
#define RK3228_TMDS_DATA_CH2_OUTPUT_SWING(x)            UPDATE(x, 3, 0)
/* REG: 0xf2 */
#define RK3228_TMDS_DATA_CH1_OUTPUT_SWING(x)            UPDATE(x, 7, 4)
#define RK3228_TMDS_DATA_CH0_OUTPUT_SWING(x)            UPDATE(x, 3, 0)

/* REG: 0x01 */
#define RK3328_BYPASS_RXSENSE_EN                        BIT(2)
#define RK3328_BYPASS_POWERON_EN                        BIT(1)
#define RK3328_BYPASS_PLLPD_EN                          BIT(0)
/* REG: 0x02 */
#define RK3328_INT_POL_HIGH                             BIT(7)
#define RK3328_BYPASS_PDATA_EN                          BIT(4)
#define RK3328_PDATA_EN                                 BIT(0)
/* REG:0x05 */
#define RK3328_INT_TMDS_CLK(x)                          UPDATE(x, 7, 4)
#define RK3328_INT_TMDS_D2(x)                           UPDATE(x, 3, 0)
/* REG:0x07 */
#define RK3328_INT_TMDS_D1(x)                           UPDATE(x, 7, 4)
#define RK3328_INT_TMDS_D0(x)                           UPDATE(x, 3, 0)
/* for all RK3328_INT_TMDS_*, ESD_DET as defined in 0xc8-0xcb */
#define RK3328_INT_AGND_LOW_PULSE_LOCKED                BIT(3)
#define RK3328_INT_RXSENSE_LOW_PULSE_LOCKED             BIT(2)
#define RK3328_INT_VSS_AGND_ESD_DET                     BIT(1)
#define RK3328_INT_AGND_VSS_ESD_DET                     BIT(0)
/* REG: 0xa0 */
#define RK3328_PCLK_VCO_DIV_5_MASK                      BIT(1)
#define RK3328_PCLK_VCO_DIV_5(x)                        UPDATE(x, 1, 1)
#define RK3328_PRE_PLL_POWER_DOWN                       BIT(0)
/* REG: 0xa1 */
#define RK3328_PRE_PLL_PRE_DIV_MASK                     GENMASK(5, 0)
#define RK3328_PRE_PLL_PRE_DIV(x)                       UPDATE(x, 5, 0)
/* REG: 0xa2 */
/* unset means center spread */
#define RK3328_SPREAD_SPECTRUM_MOD_DOWN                 BIT(7)
#define RK3328_SPREAD_SPECTRUM_MOD_DISABLE              BIT(6)
#define RK3328_PRE_PLL_FRAC_DIV_DISABLE                 UPDATE(3, 5, 4)
#define RK3328_PRE_PLL_FB_DIV_11_8_MASK                 GENMASK(3, 0)
#define RK3328_PRE_PLL_FB_DIV_11_8(x)                   UPDATE((x) >> 8, 3, 0)
/* REG: 0xa3 */
#define RK3328_PRE_PLL_FB_DIV_7_0(x)                    UPDATE(x, 7, 0)
/* REG: 0xa4*/
#define RK3328_PRE_PLL_TMDSCLK_DIV_C_MASK               GENMASK(1, 0)
#define RK3328_PRE_PLL_TMDSCLK_DIV_C(x)                 UPDATE(x, 1, 0)
#define RK3328_PRE_PLL_TMDSCLK_DIV_B_MASK               GENMASK(3, 2)
#define RK3328_PRE_PLL_TMDSCLK_DIV_B(x)                 UPDATE(x, 3, 2)
#define RK3328_PRE_PLL_TMDSCLK_DIV_A_MASK               GENMASK(5, 4)
#define RK3328_PRE_PLL_TMDSCLK_DIV_A(x)                 UPDATE(x, 5, 4)
/* REG: 0xa5 */
#define RK3328_PRE_PLL_PCLK_DIV_B_SHIFT                 5
#define RK3328_PRE_PLL_PCLK_DIV_B_MASK                  GENMASK(6, 5)
#define RK3328_PRE_PLL_PCLK_DIV_B(x)                    UPDATE(x, 6, 5)
#define RK3328_PRE_PLL_PCLK_DIV_A_MASK                  GENMASK(4, 0)
#define RK3328_PRE_PLL_PCLK_DIV_A(x)                    UPDATE(x, 4, 0)
/* REG: 0xa6 */
#define RK3328_PRE_PLL_PCLK_DIV_C_SHIFT                 5
#define RK3328_PRE_PLL_PCLK_DIV_C_MASK                  GENMASK(6, 5)
#define RK3328_PRE_PLL_PCLK_DIV_C(x)                    UPDATE(x, 6, 5)
#define RK3328_PRE_PLL_PCLK_DIV_D_MASK                  GENMASK(4, 0)
#define RK3328_PRE_PLL_PCLK_DIV_D(x)                    UPDATE(x, 4, 0)
/* REG: 0xa9 */
#define RK3328_PRE_PLL_LOCK_STATUS                      BIT(0)
/* REG: 0xaa */
#define RK3328_POST_PLL_POST_DIV_ENABLE                 GENMASK(3, 2)
#define RK3328_POST_PLL_REFCLK_SEL_TMDS                 BIT(1)
#define RK3328_POST_PLL_POWER_DOWN                      BIT(0)
/* REG:0xab */
#define RK3328_POST_PLL_FB_DIV_8(x)                     UPDATE((x) >> 8, 7, 7)
#define RK3328_POST_PLL_PRE_DIV(x)                      UPDATE(x, 4, 0)
/* REG: 0xac */
#define RK3328_POST_PLL_FB_DIV_7_0(x)                   UPDATE(x, 7, 0)
/* REG: 0xad */
#define RK3328_POST_PLL_POST_DIV_MASK                   GENMASK(1, 0)
#define RK3328_POST_PLL_POST_DIV_2                      0x0
#define RK3328_POST_PLL_POST_DIV_4                      0x1
#define RK3328_POST_PLL_POST_DIV_8                      0x3
/* REG: 0xaf */
#define RK3328_POST_PLL_LOCK_STATUS                     BIT(0)
/* REG: 0xb0 */
#define RK3328_BANDGAP_ENABLE                           BIT(2)
/* REG: 0xb2 */
#define RK3328_TMDS_CLK_DRIVER_EN                       BIT(3)
#define RK3328_TMDS_D2_DRIVER_EN                        BIT(2)
#define RK3328_TMDS_D1_DRIVER_EN                        BIT(1)
#define RK3328_TMDS_D0_DRIVER_EN                        BIT(0)
#define RK3328_TMDS_DRIVER_ENABLE               (RK3328_TMDS_CLK_DRIVER_EN | \
                                                RK3328_TMDS_D2_DRIVER_EN | \
                                                RK3328_TMDS_D1_DRIVER_EN | \
                                                RK3328_TMDS_D0_DRIVER_EN)
/* REG:0xc5 */
#define RK3328_BYPASS_TERM_RESISTOR_CALIB               BIT(7)
#define RK3328_TERM_RESISTOR_CALIB_SPEED_14_8(x)        UPDATE((x) >> 8, 6, 0)
/* REG:0xc6 */
#define RK3328_TERM_RESISTOR_CALIB_SPEED_7_0(x)         UPDATE(x, 7, 0)
/* REG:0xc7 */
#define RK3328_TERM_RESISTOR_50                         UPDATE(0, 2, 1)
#define RK3328_TERM_RESISTOR_62_5                       UPDATE(1, 2, 1)
#define RK3328_TERM_RESISTOR_75                         UPDATE(2, 2, 1)
#define RK3328_TERM_RESISTOR_100                        UPDATE(3, 2, 1)
/* REG 0xc8 - 0xcb */
#define RK3328_ESD_DETECT_MASK                          GENMASK(7, 6)
#define RK3328_ESD_DETECT_340MV                         (0x0 << 6)
#define RK3328_ESD_DETECT_280MV                         (0x1 << 6)
#define RK3328_ESD_DETECT_260MV                         (0x2 << 6)
#define RK3328_ESD_DETECT_240MV                         (0x3 << 6)
/* resistors can be used in parallel */
#define RK3328_TMDS_TERM_RESIST_MASK                    GENMASK(5, 0)
#define RK3328_TMDS_TERM_RESIST_75                      BIT(5)
#define RK3328_TMDS_TERM_RESIST_150                     BIT(4)
#define RK3328_TMDS_TERM_RESIST_300                     BIT(3)
#define RK3328_TMDS_TERM_RESIST_600                     BIT(2)
#define RK3328_TMDS_TERM_RESIST_1000                    BIT(1)
#define RK3328_TMDS_TERM_RESIST_2000                    BIT(0)
/* REG: 0xd1 */
#define RK3328_PRE_PLL_FRAC_DIV_23_16(x)                UPDATE((x) >> 16, 7, 0)
/* REG: 0xd2 */
#define RK3328_PRE_PLL_FRAC_DIV_15_8(x)                 UPDATE((x) >> 8, 7, 0)
/* REG: 0xd3 */
#define RK3328_PRE_PLL_FRAC_DIV_7_0(x)                  UPDATE(x, 7, 0)

struct inno_hdmi_phy_drv_data;

struct inno_hdmi_phy {
        struct device *dev;
        struct regmap *regmap;
        int irq;

        struct phy *phy;
        struct clk *sysclk;
        struct clk *refoclk;
        struct clk *refpclk;

        /* platform data */
        const struct inno_hdmi_phy_drv_data *plat_data;
        int chip_version;

        /* clk provider */
        struct clk_hw hw;
        struct clk *phyclk;
        unsigned long pixclock;
};

struct pre_pll_config {
        unsigned long pixclock;
        unsigned long tmdsclock;
        u8 prediv;
        u16 fbdiv;
        u8 tmds_div_a;
        u8 tmds_div_b;
        u8 tmds_div_c;
        u8 pclk_div_a;
        u8 pclk_div_b;
        u8 pclk_div_c;
        u8 pclk_div_d;
        u8 vco_div_5_en;
        u32 fracdiv;
};

struct post_pll_config {
        unsigned long tmdsclock;
        u8 prediv;
        u16 fbdiv;
        u8 postdiv;
        u8 version;
};

struct phy_config {
        unsigned long   tmdsclock;
        u8              regs[14];
};

struct inno_hdmi_phy_ops {
        int (*init)(struct inno_hdmi_phy *inno);
        int (*power_on)(struct inno_hdmi_phy *inno,
                        const struct post_pll_config *cfg,
                        const struct phy_config *phy_cfg);
        void (*power_off)(struct inno_hdmi_phy *inno);
};

struct inno_hdmi_phy_drv_data {
        const struct inno_hdmi_phy_ops  *ops;
        const struct clk_ops            *clk_ops;
        const struct phy_config         *phy_cfg_table;
};

static const struct pre_pll_config pre_pll_cfg_table[] = {
        { 27000000,  27000000, 1,  90, 3, 2, 2, 10, 3, 3, 4, 0, 0},
        { 27000000,  33750000, 1,  90, 1, 3, 3, 10, 3, 3, 4, 0, 0},
        { 40000000,  40000000, 1,  80, 2, 2, 2, 12, 2, 2, 2, 0, 0},
        { 59341000,  59341000, 1,  98, 3, 1, 2,  1, 3, 3, 4, 0, 0xE6AE6B},
        { 59400000,  59400000, 1,  99, 3, 1, 1,  1, 3, 3, 4, 0, 0},
        { 59341000,  74176250, 1,  98, 0, 3, 3,  1, 3, 3, 4, 0, 0xE6AE6B},
        { 59400000,  74250000, 1,  99, 1, 2, 2,  1, 3, 3, 4, 0, 0},
        { 74176000,  74176000, 1,  98, 1, 2, 2,  1, 2, 3, 4, 0, 0xE6AE6B},
        { 74250000,  74250000, 1,  99, 1, 2, 2,  1, 2, 3, 4, 0, 0},
        { 74176000,  92720000, 4, 494, 1, 2, 2,  1, 3, 3, 4, 0, 0x816817},
        { 74250000,  92812500, 4, 495, 1, 2, 2,  1, 3, 3, 4, 0, 0},
        {148352000, 148352000, 1,  98, 1, 1, 1,  1, 2, 2, 2, 0, 0xE6AE6B},
        {148500000, 148500000, 1,  99, 1, 1, 1,  1, 2, 2, 2, 0, 0},
        {148352000, 185440000, 4, 494, 0, 2, 2,  1, 3, 2, 2, 0, 0x816817},
        {148500000, 185625000, 4, 495, 0, 2, 2,  1, 3, 2, 2, 0, 0},
        {296703000, 296703000, 1,  98, 0, 1, 1,  1, 0, 2, 2, 0, 0xE6AE6B},
        {297000000, 297000000, 1,  99, 0, 1, 1,  1, 0, 2, 2, 0, 0},
        {296703000, 370878750, 4, 494, 1, 2, 0,  1, 3, 1, 1, 0, 0x816817},
        {297000000, 371250000, 4, 495, 1, 2, 0,  1, 3, 1, 1, 0, 0},
        {593407000, 296703500, 1,  98, 0, 1, 1,  1, 0, 2, 1, 0, 0xE6AE6B},
        {594000000, 297000000, 1,  99, 0, 1, 1,  1, 0, 2, 1, 0, 0},
        {593407000, 370879375, 4, 494, 1, 2, 0,  1, 3, 1, 1, 1, 0x816817},
        {594000000, 371250000, 4, 495, 1, 2, 0,  1, 3, 1, 1, 1, 0},
        {593407000, 593407000, 1,  98, 0, 2, 0,  1, 0, 1, 1, 0, 0xE6AE6B},
        {594000000, 594000000, 1,  99, 0, 2, 0,  1, 0, 1, 1, 0, 0},
        { /* sentinel */ }
};

static const struct post_pll_config post_pll_cfg_table[] = {
        {33750000,  1, 40, 8, 1},
        {33750000,  1, 80, 8, 2},
        {74250000,  1, 40, 8, 1},
        {74250000, 18, 80, 8, 2},
        {148500000, 2, 40, 4, 3},
        {297000000, 4, 40, 2, 3},
        {594000000, 8, 40, 1, 3},
        { /* sentinel */ }
};

/* phy tuning values for an undocumented set of registers */
static const struct phy_config rk3228_phy_cfg[] = {
        {       165000000, {
                        0xaa, 0x00, 0x44, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00,
                        0x00, 0x00, 0x00, 0x00, 0x00,
                },
        }, {
                340000000, {
                        0xaa, 0x15, 0x6a, 0xaa, 0x00, 0x00, 0x00, 0x00, 0x00,
                        0x00, 0x00, 0x00, 0x00, 0x00,
                },
        }, {
                594000000, {
                        0xaa, 0x15, 0x7a, 0xaa, 0x00, 0x00, 0x00, 0x00, 0x00,
                        0x00, 0x00, 0x00, 0x00, 0x00,
                },
        }, { /* sentinel */ },
};

/* phy tuning values for an undocumented set of registers */
static const struct phy_config rk3328_phy_cfg[] = {
        {       165000000, {
                        0x07, 0x0a, 0x0a, 0x0a, 0x00, 0x00, 0x08, 0x08, 0x08,
                        0x00, 0xac, 0xcc, 0xcc, 0xcc,
                },
        }, {
                340000000, {
                        0x0b, 0x0d, 0x0d, 0x0d, 0x07, 0x15, 0x08, 0x08, 0x08,
                        0x3f, 0xac, 0xcc, 0xcd, 0xdd,
                },
        }, {
                594000000, {
                        0x10, 0x1a, 0x1a, 0x1a, 0x07, 0x15, 0x08, 0x08, 0x08,
                        0x00, 0xac, 0xcc, 0xcc, 0xcc,
                },
        }, { /* sentinel */ },
};

static inline struct inno_hdmi_phy *to_inno_hdmi_phy(struct clk_hw *hw)
{
        return container_of(hw, struct inno_hdmi_phy, hw);
}

/*
 * The register description of the IP block does not use any distinct names
 * but instead the databook simply numbers the registers in one-increments.
 * As the registers are obviously 32bit sized, the inno_* functions
 * translate the databook register names to the actual registers addresses.
 */
static inline void inno_write(struct inno_hdmi_phy *inno, u32 reg, u8 val)
{
        regmap_write(inno->regmap, reg * 4, val);
}

static inline u8 inno_read(struct inno_hdmi_phy *inno, u32 reg)
{
        u32 val;

        regmap_read(inno->regmap, reg * 4, &val);

        return val;
}

static inline void inno_update_bits(struct inno_hdmi_phy *inno, u8 reg,
                                    u8 mask, u8 val)
{
        regmap_update_bits(inno->regmap, reg * 4, mask, val);
}

#define inno_poll(inno, reg, val, cond, sleep_us, timeout_us) \
        regmap_read_poll_timeout((inno)->regmap, (reg) * 4, val, cond, \
                                 sleep_us, timeout_us)

static unsigned long inno_hdmi_phy_get_tmdsclk(struct inno_hdmi_phy *inno,
                                               unsigned long rate)
{
        int bus_width = phy_get_bus_width(inno->phy);

        switch (bus_width) {
        case 4:
        case 5:
        case 6:
        case 10:
        case 12:
        case 16:
                return (u64)rate * bus_width / 8;
        default:
                return rate;
        }
}

static irqreturn_t inno_hdmi_phy_rk3328_hardirq(int irq, void *dev_id)
{
        struct inno_hdmi_phy *inno = dev_id;
        int intr_stat1, intr_stat2, intr_stat3;

        intr_stat1 = inno_read(inno, 0x04);
        intr_stat2 = inno_read(inno, 0x06);
        intr_stat3 = inno_read(inno, 0x08);

        if (intr_stat1)
                inno_write(inno, 0x04, intr_stat1);
        if (intr_stat2)
                inno_write(inno, 0x06, intr_stat2);
        if (intr_stat3)
                inno_write(inno, 0x08, intr_stat3);

        if (intr_stat1 || intr_stat2 || intr_stat3)
                return IRQ_WAKE_THREAD;

        return IRQ_HANDLED;
}

static irqreturn_t inno_hdmi_phy_rk3328_irq(int irq, void *dev_id)
{
        struct inno_hdmi_phy *inno = dev_id;

        inno_update_bits(inno, 0x02, RK3328_PDATA_EN, 0);
        usleep_range(10, 20);
        inno_update_bits(inno, 0x02, RK3328_PDATA_EN, RK3328_PDATA_EN);

        return IRQ_HANDLED;
}

static int inno_hdmi_phy_power_on(struct phy *phy)
{
        struct inno_hdmi_phy *inno = phy_get_drvdata(phy);
        const struct post_pll_config *cfg = post_pll_cfg_table;
        const struct phy_config *phy_cfg = inno->plat_data->phy_cfg_table;
        unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno,
                                                            inno->pixclock);
        int ret;

        if (!tmdsclock) {
                dev_err(inno->dev, "TMDS clock is zero!\n");
                return -EINVAL;
        }

        if (!inno->plat_data->ops->power_on)
                return -EINVAL;

        for (; cfg->tmdsclock != 0; cfg++)
                if (tmdsclock <= cfg->tmdsclock &&
                    cfg->version & inno->chip_version)
                        break;

        for (; phy_cfg->tmdsclock != 0; phy_cfg++)
                if (tmdsclock <= phy_cfg->tmdsclock)
                        break;

        if (cfg->tmdsclock == 0 || phy_cfg->tmdsclock == 0)
                return -EINVAL;

        dev_dbg(inno->dev, "Inno HDMI PHY Power On\n");

        ret = clk_prepare_enable(inno->phyclk);
        if (ret)
                return ret;

        ret = inno->plat_data->ops->power_on(inno, cfg, phy_cfg);
        if (ret) {
                clk_disable_unprepare(inno->phyclk);
                return ret;
        }

        return 0;
}

static int inno_hdmi_phy_power_off(struct phy *phy)
{
        struct inno_hdmi_phy *inno = phy_get_drvdata(phy);

        if (!inno->plat_data->ops->power_off)
                return -EINVAL;

        inno->plat_data->ops->power_off(inno);

        clk_disable_unprepare(inno->phyclk);

        dev_dbg(inno->dev, "Inno HDMI PHY Power Off\n");

        return 0;
}

static const struct phy_ops inno_hdmi_phy_ops = {
        .owner = THIS_MODULE,
        .power_on = inno_hdmi_phy_power_on,
        .power_off = inno_hdmi_phy_power_off,
};

static const
struct pre_pll_config *inno_hdmi_phy_get_pre_pll_cfg(struct inno_hdmi_phy *inno,
                                                     unsigned long rate)
{
        const struct pre_pll_config *cfg = pre_pll_cfg_table;
        unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno, rate);

        for (; cfg->pixclock != 0; cfg++)
                if (cfg->pixclock == rate && cfg->tmdsclock == tmdsclock)
                        break;

        if (cfg->pixclock == 0)
                return ERR_PTR(-EINVAL);

        return cfg;
}

static int inno_hdmi_phy_rk3228_clk_is_prepared(struct clk_hw *hw)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
        u8 status;

        status = inno_read(inno, 0xe0) & RK3228_PRE_PLL_POWER_DOWN;
        return status ? 0 : 1;
}

static int inno_hdmi_phy_rk3228_clk_prepare(struct clk_hw *hw)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);

        inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN, 0);
        return 0;
}

static void inno_hdmi_phy_rk3228_clk_unprepare(struct clk_hw *hw)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);

        inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN,
                         RK3228_PRE_PLL_POWER_DOWN);
}

static
unsigned long inno_hdmi_phy_rk3228_clk_recalc_rate(struct clk_hw *hw,
                                                   unsigned long parent_rate)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
        u8 nd, no_a, no_b, no_d;
        u64 vco;
        u16 nf;

        nd = inno_read(inno, 0xe2) & RK3228_PRE_PLL_PRE_DIV_MASK;
        nf = (inno_read(inno, 0xe2) & RK3228_PRE_PLL_FB_DIV_8_MASK) << 1;
        nf |= inno_read(inno, 0xe3);
        vco = parent_rate * nf;

        if (inno_read(inno, 0xe2) & RK3228_PCLK_VCO_DIV_5_MASK) {
                do_div(vco, nd * 5);
        } else {
                no_a = inno_read(inno, 0xe4) & RK3228_PRE_PLL_PCLK_DIV_A_MASK;
                if (!no_a)
                        no_a = 1;
                no_b = inno_read(inno, 0xe4) & RK3228_PRE_PLL_PCLK_DIV_B_MASK;
                no_b >>= RK3228_PRE_PLL_PCLK_DIV_B_SHIFT;
                no_b += 2;
                no_d = inno_read(inno, 0xe5) & RK3228_PRE_PLL_PCLK_DIV_D_MASK;

                do_div(vco, (nd * (no_a == 1 ? no_b : no_a) * no_d * 2));
        }

        inno->pixclock = vco;

        dev_dbg(inno->dev, "%s rate %lu\n", __func__, inno->pixclock);

        return vco;
}

static long inno_hdmi_phy_rk3228_clk_round_rate(struct clk_hw *hw,
                                                unsigned long rate,
                                                unsigned long *parent_rate)
{
        const struct pre_pll_config *cfg = pre_pll_cfg_table;

        rate = (rate / 1000) * 1000;

        for (; cfg->pixclock != 0; cfg++)
                if (cfg->pixclock == rate && !cfg->fracdiv)
                        break;

        if (cfg->pixclock == 0)
                return -EINVAL;

        return cfg->pixclock;
}

static int inno_hdmi_phy_rk3228_clk_set_rate(struct clk_hw *hw,
                                             unsigned long rate,
                                             unsigned long parent_rate)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
        const struct pre_pll_config *cfg = pre_pll_cfg_table;
        unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno, rate);
        u32 v;
        int ret;

        dev_dbg(inno->dev, "%s rate %lu tmdsclk %lu\n",
                __func__, rate, tmdsclock);

        cfg = inno_hdmi_phy_get_pre_pll_cfg(inno, rate);
        if (IS_ERR(cfg))
                return PTR_ERR(cfg);

        /* Power down PRE-PLL */
        inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN,
                         RK3228_PRE_PLL_POWER_DOWN);

        inno_update_bits(inno, 0xe2, RK3228_PRE_PLL_FB_DIV_8_MASK |
                         RK3228_PCLK_VCO_DIV_5_MASK |
                         RK3228_PRE_PLL_PRE_DIV_MASK,
                         RK3228_PRE_PLL_FB_DIV_8(cfg->fbdiv) |
                         RK3228_PCLK_VCO_DIV_5(cfg->vco_div_5_en) |
                         RK3228_PRE_PLL_PRE_DIV(cfg->prediv));
        inno_write(inno, 0xe3, RK3228_PRE_PLL_FB_DIV_7_0(cfg->fbdiv));
        inno_update_bits(inno, 0xe4, RK3228_PRE_PLL_PCLK_DIV_B_MASK |
                         RK3228_PRE_PLL_PCLK_DIV_A_MASK,
                         RK3228_PRE_PLL_PCLK_DIV_B(cfg->pclk_div_b) |
                         RK3228_PRE_PLL_PCLK_DIV_A(cfg->pclk_div_a));
        inno_update_bits(inno, 0xe5, RK3228_PRE_PLL_PCLK_DIV_C_MASK |
                         RK3228_PRE_PLL_PCLK_DIV_D_MASK,
                         RK3228_PRE_PLL_PCLK_DIV_C(cfg->pclk_div_c) |
                         RK3228_PRE_PLL_PCLK_DIV_D(cfg->pclk_div_d));
        inno_update_bits(inno, 0xe6, RK3228_PRE_PLL_TMDSCLK_DIV_C_MASK |
                         RK3228_PRE_PLL_TMDSCLK_DIV_A_MASK |
                         RK3228_PRE_PLL_TMDSCLK_DIV_B_MASK,
                         RK3228_PRE_PLL_TMDSCLK_DIV_C(cfg->tmds_div_c) |
                         RK3228_PRE_PLL_TMDSCLK_DIV_A(cfg->tmds_div_a) |
                         RK3228_PRE_PLL_TMDSCLK_DIV_B(cfg->tmds_div_b));

        /* Power up PRE-PLL */
        inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN, 0);

        /* Wait for Pre-PLL lock */
        ret = inno_poll(inno, 0xe8, v, v & RK3228_PRE_PLL_LOCK_STATUS,
                        100, 100000);
        if (ret) {
                dev_err(inno->dev, "Pre-PLL locking failed\n");
                return ret;
        }

        inno->pixclock = rate;

        return 0;
}

static const struct clk_ops inno_hdmi_phy_rk3228_clk_ops = {
        .prepare = inno_hdmi_phy_rk3228_clk_prepare,
        .unprepare = inno_hdmi_phy_rk3228_clk_unprepare,
        .is_prepared = inno_hdmi_phy_rk3228_clk_is_prepared,
        .recalc_rate = inno_hdmi_phy_rk3228_clk_recalc_rate,
        .round_rate = inno_hdmi_phy_rk3228_clk_round_rate,
        .set_rate = inno_hdmi_phy_rk3228_clk_set_rate,
};

static int inno_hdmi_phy_rk3328_clk_is_prepared(struct clk_hw *hw)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
        u8 status;

        status = inno_read(inno, 0xa0) & RK3328_PRE_PLL_POWER_DOWN;
        return status ? 0 : 1;
}

static int inno_hdmi_phy_rk3328_clk_prepare(struct clk_hw *hw)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);

        inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN, 0);
        return 0;
}

static void inno_hdmi_phy_rk3328_clk_unprepare(struct clk_hw *hw)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);

        inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN,
                         RK3328_PRE_PLL_POWER_DOWN);
}

static
unsigned long inno_hdmi_phy_rk3328_clk_recalc_rate(struct clk_hw *hw,
                                                   unsigned long parent_rate)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
        unsigned long frac;
        u8 nd, no_a, no_b, no_c, no_d;
        u64 vco;
        u16 nf;

        nd = inno_read(inno, 0xa1) & RK3328_PRE_PLL_PRE_DIV_MASK;
        nf = ((inno_read(inno, 0xa2) & RK3328_PRE_PLL_FB_DIV_11_8_MASK) << 8);
        nf |= inno_read(inno, 0xa3);
        vco = parent_rate * nf;

        if (!(inno_read(inno, 0xa2) & RK3328_PRE_PLL_FRAC_DIV_DISABLE)) {
                frac = inno_read(inno, 0xd3) |
                       (inno_read(inno, 0xd2) << 8) |
                       (inno_read(inno, 0xd1) << 16);
                vco += DIV_ROUND_CLOSEST(parent_rate * frac, (1 << 24));
        }

        if (inno_read(inno, 0xa0) & RK3328_PCLK_VCO_DIV_5_MASK) {
                do_div(vco, nd * 5);
        } else {
                no_a = inno_read(inno, 0xa5) & RK3328_PRE_PLL_PCLK_DIV_A_MASK;
                no_b = inno_read(inno, 0xa5) & RK3328_PRE_PLL_PCLK_DIV_B_MASK;
                no_b >>= RK3328_PRE_PLL_PCLK_DIV_B_SHIFT;
                no_b += 2;
                no_c = inno_read(inno, 0xa6) & RK3328_PRE_PLL_PCLK_DIV_C_MASK;
                no_c >>= RK3328_PRE_PLL_PCLK_DIV_C_SHIFT;
                no_c = 1 << no_c;
                no_d = inno_read(inno, 0xa6) & RK3328_PRE_PLL_PCLK_DIV_D_MASK;

                do_div(vco, (nd * (no_a == 1 ? no_b : no_a) * no_d * 2));
        }

        inno->pixclock = vco;
        dev_dbg(inno->dev, "%s rate %lu\n", __func__, inno->pixclock);

        return vco;
}

static long inno_hdmi_phy_rk3328_clk_round_rate(struct clk_hw *hw,
                                                unsigned long rate,
                                                unsigned long *parent_rate)
{
        const struct pre_pll_config *cfg = pre_pll_cfg_table;

        rate = (rate / 1000) * 1000;

        for (; cfg->pixclock != 0; cfg++)
                if (cfg->pixclock == rate)
                        break;

        if (cfg->pixclock == 0)
                return -EINVAL;

        return cfg->pixclock;
}

static int inno_hdmi_phy_rk3328_clk_set_rate(struct clk_hw *hw,
                                             unsigned long rate,
                                             unsigned long parent_rate)
{
        struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
        const struct pre_pll_config *cfg = pre_pll_cfg_table;
        unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno, rate);
        u32 val;
        int ret;

        dev_dbg(inno->dev, "%s rate %lu tmdsclk %lu\n",
                __func__, rate, tmdsclock);

        cfg = inno_hdmi_phy_get_pre_pll_cfg(inno, rate);
        if (IS_ERR(cfg))
                return PTR_ERR(cfg);

        inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN,
                         RK3328_PRE_PLL_POWER_DOWN);

        /* Configure pre-pll */
        inno_update_bits(inno, 0xa0, RK3228_PCLK_VCO_DIV_5_MASK,
                         RK3228_PCLK_VCO_DIV_5(cfg->vco_div_5_en));
        inno_write(inno, 0xa1, RK3328_PRE_PLL_PRE_DIV(cfg->prediv));

        val = RK3328_SPREAD_SPECTRUM_MOD_DISABLE;
        if (!cfg->fracdiv)
                val |= RK3328_PRE_PLL_FRAC_DIV_DISABLE;
        inno_write(inno, 0xa2, RK3328_PRE_PLL_FB_DIV_11_8(cfg->fbdiv) | val);
        inno_write(inno, 0xa3, RK3328_PRE_PLL_FB_DIV_7_0(cfg->fbdiv));
        inno_write(inno, 0xa5, RK3328_PRE_PLL_PCLK_DIV_A(cfg->pclk_div_a) |
                   RK3328_PRE_PLL_PCLK_DIV_B(cfg->pclk_div_b));
        inno_write(inno, 0xa6, RK3328_PRE_PLL_PCLK_DIV_C(cfg->pclk_div_c) |
                   RK3328_PRE_PLL_PCLK_DIV_D(cfg->pclk_div_d));
        inno_write(inno, 0xa4, RK3328_PRE_PLL_TMDSCLK_DIV_C(cfg->tmds_div_c) |
                   RK3328_PRE_PLL_TMDSCLK_DIV_A(cfg->tmds_div_a) |
                   RK3328_PRE_PLL_TMDSCLK_DIV_B(cfg->tmds_div_b));
        inno_write(inno, 0xd3, RK3328_PRE_PLL_FRAC_DIV_7_0(cfg->fracdiv));
        inno_write(inno, 0xd2, RK3328_PRE_PLL_FRAC_DIV_15_8(cfg->fracdiv));
        inno_write(inno, 0xd1, RK3328_PRE_PLL_FRAC_DIV_23_16(cfg->fracdiv));

        inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN, 0);

        /* Wait for Pre-PLL lock */
        ret = inno_poll(inno, 0xa9, val, val & RK3328_PRE_PLL_LOCK_STATUS,
                        1000, 10000);
        if (ret) {
                dev_err(inno->dev, "Pre-PLL locking failed\n");
                return ret;
        }

        inno->pixclock = rate;

        return 0;
}

static const struct clk_ops inno_hdmi_phy_rk3328_clk_ops = {
        .prepare = inno_hdmi_phy_rk3328_clk_prepare,
        .unprepare = inno_hdmi_phy_rk3328_clk_unprepare,
        .is_prepared = inno_hdmi_phy_rk3328_clk_is_prepared,
        .recalc_rate = inno_hdmi_phy_rk3328_clk_recalc_rate,
        .round_rate = inno_hdmi_phy_rk3328_clk_round_rate,
        .set_rate = inno_hdmi_phy_rk3328_clk_set_rate,
};

static int inno_hdmi_phy_clk_register(struct inno_hdmi_phy *inno)
{
        struct device *dev = inno->dev;
        struct device_node *np = dev->of_node;
        struct clk_init_data init;
        const char *parent_name;
        int ret;

        parent_name = __clk_get_name(inno->refoclk);

        init.parent_names = &parent_name;
        init.num_parents = 1;
        init.flags = 0;
        init.name = "pin_hd20_pclk";
        init.ops = inno->plat_data->clk_ops;

        /* optional override of the clock name */
        of_property_read_string(np, "clock-output-names", &init.name);

        inno->hw.init = &init;

        inno->phyclk = devm_clk_register(dev, &inno->hw);
        if (IS_ERR(inno->phyclk)) {
                ret = PTR_ERR(inno->phyclk);
                dev_err(dev, "failed to register clock: %d\n", ret);
                return ret;
        }

        ret = of_clk_add_provider(np, of_clk_src_simple_get, inno->phyclk);
        if (ret) {
                dev_err(dev, "failed to register clock provider: %d\n", ret);
                return ret;
        }

        return 0;
}

static int inno_hdmi_phy_rk3228_init(struct inno_hdmi_phy *inno)
{
        /*
         * Use phy internal register control
         * rxsense/poweron/pllpd/pdataen signal.
         */
        inno_write(inno, 0x01, RK3228_BYPASS_RXSENSE_EN |
                   RK3228_BYPASS_PWRON_EN |
                   RK3228_BYPASS_PLLPD_EN);
        inno_update_bits(inno, 0x02, RK3228_BYPASS_PDATA_EN,
                         RK3228_BYPASS_PDATA_EN);

        /* manual power down post-PLL */
        inno_update_bits(inno, 0xaa, RK3228_POST_PLL_CTRL_MANUAL,
                         RK3228_POST_PLL_CTRL_MANUAL);

        inno->chip_version = 1;

        return 0;
}

static int
inno_hdmi_phy_rk3228_power_on(struct inno_hdmi_phy *inno,
                              const struct post_pll_config *cfg,
                              const struct phy_config *phy_cfg)
{
        int ret;
        u32 v;

        inno_update_bits(inno, 0x02, RK3228_PDATAEN_DISABLE,
                         RK3228_PDATAEN_DISABLE);
        inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN |
                         RK3228_POST_PLL_POWER_DOWN,
                         RK3228_PRE_PLL_POWER_DOWN |
                         RK3228_POST_PLL_POWER_DOWN);

        /* Post-PLL update */
        inno_update_bits(inno, 0xe9, RK3228_POST_PLL_PRE_DIV_MASK,
                         RK3228_POST_PLL_PRE_DIV(cfg->prediv));
        inno_update_bits(inno, 0xeb, RK3228_POST_PLL_FB_DIV_8_MASK,
                         RK3228_POST_PLL_FB_DIV_8(cfg->fbdiv));
        inno_write(inno, 0xea, RK3228_POST_PLL_FB_DIV_7_0(cfg->fbdiv));

        if (cfg->postdiv == 1) {
                inno_update_bits(inno, 0xe9, RK3228_POST_PLL_POST_DIV_ENABLE,
                                 0);
        } else {
                int div = cfg->postdiv / 2 - 1;

                inno_update_bits(inno, 0xe9, RK3228_POST_PLL_POST_DIV_ENABLE,
                                 RK3228_POST_PLL_POST_DIV_ENABLE);
                inno_update_bits(inno, 0xeb, RK3228_POST_PLL_POST_DIV_MASK,
                                 RK3228_POST_PLL_POST_DIV(div));
        }

        for (v = 0; v < 4; v++)
                inno_write(inno, 0xef + v, phy_cfg->regs[v]);

        inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN |
                         RK3228_POST_PLL_POWER_DOWN, 0);
        inno_update_bits(inno, 0xe1, RK3228_BANDGAP_ENABLE,
                         RK3228_BANDGAP_ENABLE);
        inno_update_bits(inno, 0xe1, RK3228_TMDS_DRIVER_ENABLE,
                         RK3228_TMDS_DRIVER_ENABLE);

        /* Wait for post PLL lock */
        ret = inno_poll(inno, 0xeb, v, v & RK3228_POST_PLL_LOCK_STATUS,
                        100, 100000);
        if (ret) {
                dev_err(inno->dev, "Post-PLL locking failed\n");
                return ret;
        }

        if (cfg->tmdsclock > 340000000)
                msleep(100);

        inno_update_bits(inno, 0x02, RK3228_PDATAEN_DISABLE, 0);
        return 0;
}

static void inno_hdmi_phy_rk3228_power_off(struct inno_hdmi_phy *inno)
{
        inno_update_bits(inno, 0xe1, RK3228_TMDS_DRIVER_ENABLE, 0);
        inno_update_bits(inno, 0xe1, RK3228_BANDGAP_ENABLE, 0);
        inno_update_bits(inno, 0xe0, RK3228_POST_PLL_POWER_DOWN,
                         RK3228_POST_PLL_POWER_DOWN);
}

static const struct inno_hdmi_phy_ops rk3228_hdmi_phy_ops = {
        .init = inno_hdmi_phy_rk3228_init,
        .power_on = inno_hdmi_phy_rk3228_power_on,
        .power_off = inno_hdmi_phy_rk3228_power_off,
};

static int inno_hdmi_phy_rk3328_init(struct inno_hdmi_phy *inno)
{
        struct nvmem_cell *cell;
        unsigned char *efuse_buf;
        size_t len;

        /*
         * Use phy internal register control
         * rxsense/poweron/pllpd/pdataen signal.
         */
        inno_write(inno, 0x01, RK3328_BYPASS_RXSENSE_EN |
                   RK3328_BYPASS_POWERON_EN |
                   RK3328_BYPASS_PLLPD_EN);
        inno_write(inno, 0x02, RK3328_INT_POL_HIGH | RK3328_BYPASS_PDATA_EN |
                   RK3328_PDATA_EN);

        /* Disable phy irq */
        inno_write(inno, 0x05, 0);
        inno_write(inno, 0x07, 0);

        /* try to read the chip-version */
        inno->chip_version = 1;
        cell = nvmem_cell_get(inno->dev, "cpu-version");
        if (IS_ERR(cell)) {
                if (PTR_ERR(cell) == -EPROBE_DEFER)
                        return -EPROBE_DEFER;

                return 0;
        }

        efuse_buf = nvmem_cell_read(cell, &len);
        nvmem_cell_put(cell);

        if (IS_ERR(efuse_buf))
                return 0;
        if (len == 1)
                inno->chip_version = efuse_buf[0] + 1;
        kfree(efuse_buf);

        return 0;
}

static int
inno_hdmi_phy_rk3328_power_on(struct inno_hdmi_phy *inno,
                              const struct post_pll_config *cfg,
                              const struct phy_config *phy_cfg)
{
        int ret;
        u32 v;

        inno_update_bits(inno, 0x02, RK3328_PDATA_EN, 0);
        inno_update_bits(inno, 0xaa, RK3328_POST_PLL_POWER_DOWN,
                         RK3328_POST_PLL_POWER_DOWN);

        inno_write(inno, 0xac, RK3328_POST_PLL_FB_DIV_7_0(cfg->fbdiv));
        if (cfg->postdiv == 1) {
                inno_write(inno, 0xaa, RK3328_POST_PLL_REFCLK_SEL_TMDS);
                inno_write(inno, 0xab, RK3328_POST_PLL_FB_DIV_8(cfg->fbdiv) |
                           RK3328_POST_PLL_PRE_DIV(cfg->prediv));
        } else {
                v = (cfg->postdiv / 2) - 1;
                v &= RK3328_POST_PLL_POST_DIV_MASK;
                inno_write(inno, 0xad, v);
                inno_write(inno, 0xab, RK3328_POST_PLL_FB_DIV_8(cfg->fbdiv) |
                           RK3328_POST_PLL_PRE_DIV(cfg->prediv));
                inno_write(inno, 0xaa, RK3328_POST_PLL_POST_DIV_ENABLE |
                           RK3328_POST_PLL_REFCLK_SEL_TMDS);
        }

        for (v = 0; v < 14; v++)
                inno_write(inno, 0xb5 + v, phy_cfg->regs[v]);

        /* set ESD detection threshold for TMDS CLK, D2, D1 and D0 */
        for (v = 0; v < 4; v++)
                inno_update_bits(inno, 0xc8 + v, RK3328_ESD_DETECT_MASK,
                                 RK3328_ESD_DETECT_340MV);

        if (phy_cfg->tmdsclock > 340000000) {
                /* Set termination resistor to 100ohm */
                v = clk_get_rate(inno->sysclk) / 100000;
                inno_write(inno, 0xc5, RK3328_TERM_RESISTOR_CALIB_SPEED_14_8(v)
                           | RK3328_BYPASS_TERM_RESISTOR_CALIB);
                inno_write(inno, 0xc6, RK3328_TERM_RESISTOR_CALIB_SPEED_7_0(v));
                inno_write(inno, 0xc7, RK3328_TERM_RESISTOR_100);
                inno_update_bits(inno, 0xc5,
                                 RK3328_BYPASS_TERM_RESISTOR_CALIB, 0);
        } else {
                inno_write(inno, 0xc5, RK3328_BYPASS_TERM_RESISTOR_CALIB);

                /* clk termination resistor is 50ohm (parallel resistors) */
                if (phy_cfg->tmdsclock > 165000000)
                        inno_update_bits(inno, 0xc8,
                                         RK3328_TMDS_TERM_RESIST_MASK,
                                         RK3328_TMDS_TERM_RESIST_75 |
                                         RK3328_TMDS_TERM_RESIST_150);

                /* data termination resistor for D2, D1 and D0 is 150ohm */
                for (v = 0; v < 3; v++)
                        inno_update_bits(inno, 0xc9 + v,
                                         RK3328_TMDS_TERM_RESIST_MASK,
                                         RK3328_TMDS_TERM_RESIST_150);
        }

        inno_update_bits(inno, 0xaa, RK3328_POST_PLL_POWER_DOWN, 0);
        inno_update_bits(inno, 0xb0, RK3328_BANDGAP_ENABLE,
                         RK3328_BANDGAP_ENABLE);
        inno_update_bits(inno, 0xb2, RK3328_TMDS_DRIVER_ENABLE,
                         RK3328_TMDS_DRIVER_ENABLE);

        /* Wait for post PLL lock */
        ret = inno_poll(inno, 0xaf, v, v & RK3328_POST_PLL_LOCK_STATUS,
                        1000, 10000);
        if (ret) {
                dev_err(inno->dev, "Post-PLL locking failed\n");
                return ret;
        }

        if (phy_cfg->tmdsclock > 340000000)
                msleep(100);

        inno_update_bits(inno, 0x02, RK3328_PDATA_EN, RK3328_PDATA_EN);

        /* Enable PHY IRQ */
        inno_write(inno, 0x05, RK3328_INT_TMDS_CLK(RK3328_INT_VSS_AGND_ESD_DET)
                   | RK3328_INT_TMDS_D2(RK3328_INT_VSS_AGND_ESD_DET));
        inno_write(inno, 0x07, RK3328_INT_TMDS_D1(RK3328_INT_VSS_AGND_ESD_DET)
                   | RK3328_INT_TMDS_D0(RK3328_INT_VSS_AGND_ESD_DET));
        return 0;
}

static void inno_hdmi_phy_rk3328_power_off(struct inno_hdmi_phy *inno)
{
        inno_update_bits(inno, 0xb2, RK3328_TMDS_DRIVER_ENABLE, 0);
        inno_update_bits(inno, 0xb0, RK3328_BANDGAP_ENABLE, 0);
        inno_update_bits(inno, 0xaa, RK3328_POST_PLL_POWER_DOWN,
                         RK3328_POST_PLL_POWER_DOWN);

        /* Disable PHY IRQ */
        inno_write(inno, 0x05, 0);
        inno_write(inno, 0x07, 0);
}

static const struct inno_hdmi_phy_ops rk3328_hdmi_phy_ops = {
        .init = inno_hdmi_phy_rk3328_init,
        .power_on = inno_hdmi_phy_rk3328_power_on,
        .power_off = inno_hdmi_phy_rk3328_power_off,
};

static const struct inno_hdmi_phy_drv_data rk3228_hdmi_phy_drv_data = {
        .ops = &rk3228_hdmi_phy_ops,
        .clk_ops = &inno_hdmi_phy_rk3228_clk_ops,
        .phy_cfg_table = rk3228_phy_cfg,
};

static const struct inno_hdmi_phy_drv_data rk3328_hdmi_phy_drv_data = {
        .ops = &rk3328_hdmi_phy_ops,
        .clk_ops = &inno_hdmi_phy_rk3328_clk_ops,
        .phy_cfg_table = rk3328_phy_cfg,
};

static const struct regmap_config inno_hdmi_phy_regmap_config = {
        .reg_bits = 32,
        .val_bits = 32,
        .reg_stride = 4,
        .max_register = 0x400,
};

static void inno_hdmi_phy_action(void *data)
{
        struct inno_hdmi_phy *inno = data;

        clk_disable_unprepare(inno->refpclk);
        clk_disable_unprepare(inno->sysclk);
}

static int inno_hdmi_phy_probe(struct platform_device *pdev)
{
        struct inno_hdmi_phy *inno;
        struct phy_provider *phy_provider;
        void __iomem *regs;
        int ret;

        inno = devm_kzalloc(&pdev->dev, sizeof(*inno), GFP_KERNEL);
        if (!inno)
                return -ENOMEM;

        inno->dev = &pdev->dev;

        inno->plat_data = of_device_get_match_data(inno->dev);
        if (!inno->plat_data || !inno->plat_data->ops)
                return -EINVAL;

        regs = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(regs))
                return PTR_ERR(regs);

        inno->sysclk = devm_clk_get(inno->dev, "sysclk");
        if (IS_ERR(inno->sysclk)) {
                ret = PTR_ERR(inno->sysclk);
                dev_err(inno->dev, "failed to get sysclk: %d\n", ret);
                return ret;
        }

        inno->refpclk = devm_clk_get(inno->dev, "refpclk");
        if (IS_ERR(inno->refpclk)) {
                ret = PTR_ERR(inno->refpclk);
                dev_err(inno->dev, "failed to get ref clock: %d\n", ret);
                return ret;
        }

        inno->refoclk = devm_clk_get(inno->dev, "refoclk");
        if (IS_ERR(inno->refoclk)) {
                ret = PTR_ERR(inno->refoclk);
                dev_err(inno->dev, "failed to get oscillator-ref clock: %d\n",
                        ret);
                return ret;
        }

        ret = clk_prepare_enable(inno->sysclk);
        if (ret) {
                dev_err(inno->dev, "Cannot enable inno phy sysclk: %d\n", ret);
                return ret;
        }

        /*
         * Refpclk needs to be on, on at least the rk3328 for still
         * unknown reasons.
         */
        ret = clk_prepare_enable(inno->refpclk);
        if (ret) {
                dev_err(inno->dev, "failed to enable refpclk\n");
                clk_disable_unprepare(inno->sysclk);
                return ret;
        }

        ret = devm_add_action_or_reset(inno->dev, inno_hdmi_phy_action,
                                       inno);
        if (ret)
                return ret;

        inno->regmap = devm_regmap_init_mmio(inno->dev, regs,
                                             &inno_hdmi_phy_regmap_config);
        if (IS_ERR(inno->regmap))
                return PTR_ERR(inno->regmap);

        /* only the newer rk3328 hdmiphy has an interrupt */
        inno->irq = platform_get_irq(pdev, 0);
        if (inno->irq > 0) {
                ret = devm_request_threaded_irq(inno->dev, inno->irq,
                                                inno_hdmi_phy_rk3328_hardirq,
                                                inno_hdmi_phy_rk3328_irq,
                                                IRQF_SHARED,
                                                dev_name(inno->dev), inno);
                if (ret)
                        return ret;
        }

        inno->phy = devm_phy_create(inno->dev, NULL, &inno_hdmi_phy_ops);
        if (IS_ERR(inno->phy)) {
                dev_err(inno->dev, "failed to create HDMI PHY\n");
                return PTR_ERR(inno->phy);
        }

        phy_set_drvdata(inno->phy, inno);
        phy_set_bus_width(inno->phy, 8);

        if (inno->plat_data->ops->init) {
                ret = inno->plat_data->ops->init(inno);
                if (ret)
                        return ret;
        }

        ret = inno_hdmi_phy_clk_register(inno);
        if (ret)
                return ret;

        phy_provider = devm_of_phy_provider_register(inno->dev,
                                                     of_phy_simple_xlate);
        return PTR_ERR_OR_ZERO(phy_provider);
}

static int inno_hdmi_phy_remove(struct platform_device *pdev)
{
        of_clk_del_provider(pdev->dev.of_node);

        return 0;
}

static const struct of_device_id inno_hdmi_phy_of_match[] = {
        {
                .compatible = "rockchip,rk3228-hdmi-phy",
                .data = &rk3228_hdmi_phy_drv_data
        }, {
                .compatible = "rockchip,rk3328-hdmi-phy",
                .data = &rk3328_hdmi_phy_drv_data
        }, { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, inno_hdmi_phy_of_match);

static struct platform_driver inno_hdmi_phy_driver = {
        .probe  = inno_hdmi_phy_probe,
        .remove = inno_hdmi_phy_remove,
        .driver = {
                .name = "inno-hdmi-phy",
                .of_match_table = inno_hdmi_phy_of_match,
        },
};
module_platform_driver(inno_hdmi_phy_driver);

MODULE_AUTHOR("Zheng Yang <zhengyang@rock-chips.com>");
MODULE_DESCRIPTION("Innosilion HDMI 2.0 Transmitter PHY Driver");
MODULE_LICENSE("GPL v2");