root/drivers/clk/qcom/videocc-sm8250.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
 */

#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>

#include <dt-bindings/clock/qcom,videocc-sm8250.h>

#include "clk-alpha-pll.h"
#include "clk-branch.h"
#include "clk-rcg.h"
#include "clk-regmap.h"
#include "clk-regmap-divider.h"
#include "common.h"
#include "reset.h"
#include "gdsc.h"

enum {
        P_BI_TCXO,
        P_VIDEO_PLL0_OUT_MAIN,
        P_VIDEO_PLL1_OUT_MAIN,
};

static const struct pll_vco lucid_vco[] = {
        { 249600000, 2000000000, 0 },
};

static const struct alpha_pll_config video_pll0_config = {
        .l = 0x25,
        .alpha = 0x8000,
        .config_ctl_val = 0x20485699,
        .config_ctl_hi_val = 0x00002261,
        .config_ctl_hi1_val = 0x329A699C,
        .user_ctl_val = 0x00000000,
        .user_ctl_hi_val = 0x00000805,
        .user_ctl_hi1_val = 0x00000000,
};

static struct clk_alpha_pll video_pll0 = {
        .offset = 0x42c,
        .vco_table = lucid_vco,
        .num_vco = ARRAY_SIZE(lucid_vco),
        .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
        .clkr = {
                .hw.init = &(struct clk_init_data){
                        .name = "video_pll0",
                        .parent_data = &(const struct clk_parent_data){
                                .fw_name = "bi_tcxo",
                        },
                        .num_parents = 1,
                        .ops = &clk_alpha_pll_lucid_ops,
                },
        },
};

static const struct alpha_pll_config video_pll1_config = {
        .l = 0x2B,
        .alpha = 0xC000,
        .config_ctl_val = 0x20485699,
        .config_ctl_hi_val = 0x00002261,
        .config_ctl_hi1_val = 0x329A699C,
        .user_ctl_val = 0x00000000,
        .user_ctl_hi_val = 0x00000805,
        .user_ctl_hi1_val = 0x00000000,
};

static struct clk_alpha_pll video_pll1 = {
        .offset = 0x7d0,
        .vco_table = lucid_vco,
        .num_vco = ARRAY_SIZE(lucid_vco),
        .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
        .clkr = {
                .hw.init = &(struct clk_init_data){
                        .name = "video_pll1",
                        .parent_data = &(const struct clk_parent_data){
                                .fw_name = "bi_tcxo",
                        },
                        .num_parents = 1,
                        .ops = &clk_alpha_pll_lucid_ops,
                },
        },
};

static const struct parent_map video_cc_parent_map_1[] = {
        { P_BI_TCXO, 0 },
        { P_VIDEO_PLL0_OUT_MAIN, 1 },
};

static const struct clk_parent_data video_cc_parent_data_1[] = {
        { .fw_name = "bi_tcxo" },
        { .hw = &video_pll0.clkr.hw },
};

static const struct parent_map video_cc_parent_map_2[] = {
        { P_BI_TCXO, 0 },
        { P_VIDEO_PLL1_OUT_MAIN, 1 },
};

static const struct clk_parent_data video_cc_parent_data_2[] = {
        { .fw_name = "bi_tcxo" },
        { .hw = &video_pll1.clkr.hw },
};

static const struct freq_tbl ftbl_video_cc_mvs0_clk_src[] = {
        F(19200000, P_BI_TCXO, 1, 0, 0),
        F(720000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
        F(1014000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
        F(1098000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
        F(1332000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
        { }
};

static struct clk_rcg2 video_cc_mvs0_clk_src = {
        .cmd_rcgr = 0xb94,
        .mnd_width = 0,
        .hid_width = 5,
        .parent_map = video_cc_parent_map_1,
        .freq_tbl = ftbl_video_cc_mvs0_clk_src,
        .clkr.hw.init = &(struct clk_init_data){
                .name = "video_cc_mvs0_clk_src",
                .parent_data = video_cc_parent_data_1,
                .num_parents = ARRAY_SIZE(video_cc_parent_data_1),
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_rcg2_shared_ops,
        },
};

static const struct freq_tbl ftbl_video_cc_mvs1_clk_src[] = {
        F(19200000, P_BI_TCXO, 1, 0, 0),
        F(840000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
        F(1098000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
        F(1332000000, P_VIDEO_PLL1_OUT_MAIN, 1, 0, 0),
        { }
};

static struct clk_rcg2 video_cc_mvs1_clk_src = {
        .cmd_rcgr = 0xbb4,
        .mnd_width = 0,
        .hid_width = 5,
        .parent_map = video_cc_parent_map_2,
        .freq_tbl = ftbl_video_cc_mvs1_clk_src,
        .clkr.hw.init = &(struct clk_init_data){
                .name = "video_cc_mvs1_clk_src",
                .parent_data = video_cc_parent_data_2,
                .num_parents = ARRAY_SIZE(video_cc_parent_data_2),
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_rcg2_shared_ops,
        },
};

static struct clk_regmap_div video_cc_mvs0c_div2_div_clk_src = {
        .reg = 0xc54,
        .shift = 0,
        .width = 2,
        .clkr.hw.init = &(struct clk_init_data) {
                .name = "video_cc_mvs0c_div2_div_clk_src",
                .parent_hws = (const struct clk_hw*[]){
                        &video_cc_mvs0_clk_src.clkr.hw,
                },
                .num_parents = 1,
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_regmap_div_ro_ops,
        },
};

static struct clk_regmap_div video_cc_mvs0_div_clk_src = {
        .reg = 0xd54,
        .shift = 0,
        .width = 2,
        .clkr.hw.init = &(struct clk_init_data) {
                .name = "video_cc_mvs0_div_clk_src",
                .parent_hws = (const struct clk_hw*[]){
                        &video_cc_mvs0_clk_src.clkr.hw,
                },
                .num_parents = 1,
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_regmap_div_ro_ops,
        },
};

static struct clk_regmap_div video_cc_mvs1c_div2_div_clk_src = {
        .reg = 0xcf4,
        .shift = 0,
        .width = 2,
        .clkr.hw.init = &(struct clk_init_data) {
                .name = "video_cc_mvs1c_div2_div_clk_src",
                .parent_hws = (const struct clk_hw*[]){
                        &video_cc_mvs1_clk_src.clkr.hw,
                },
                .num_parents = 1,
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_regmap_div_ro_ops,
        },
};

static struct clk_branch video_cc_mvs0c_clk = {
        .halt_reg = 0xc34,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0xc34,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_mvs0c_clk",
                        .parent_hws = (const struct clk_hw*[]){
                                &video_cc_mvs0c_div2_div_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvs0_clk = {
        .halt_reg = 0xd34,
        .halt_check = BRANCH_HALT_VOTED,
        .clkr = {
                .enable_reg = 0xd34,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_mvs0_clk",
                        .parent_hws = (const struct clk_hw*[]){
                                &video_cc_mvs0_div_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvs1_div2_clk = {
        .halt_reg = 0xdf4,
        .halt_check = BRANCH_HALT_VOTED,
        .clkr = {
                .enable_reg = 0xdf4,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_mvs1_div2_clk",
                        .parent_hws = (const struct clk_hw*[]){
                                &video_cc_mvs1c_div2_div_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvs1c_clk = {
        .halt_reg = 0xcd4,
        .halt_check = BRANCH_HALT_VOTED,
        .clkr = {
                .enable_reg = 0xcd4,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_mvs1c_clk",
                        .parent_hws = (const struct clk_hw*[]){
                                &video_cc_mvs1c_div2_div_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct gdsc mvs0c_gdsc = {
        .gdscr = 0xbf8,
        .pd = {
                .name = "mvs0c_gdsc",
        },
        .flags = 0,
        .pwrsts = PWRSTS_OFF_ON,
};

static struct gdsc mvs1c_gdsc = {
        .gdscr = 0xc98,
        .pd = {
                .name = "mvs1c_gdsc",
        },
        .flags = 0,
        .pwrsts = PWRSTS_OFF_ON,
};

static struct gdsc mvs0_gdsc = {
        .gdscr = 0xd18,
        .pd = {
                .name = "mvs0_gdsc",
        },
        .flags = HW_CTRL_TRIGGER,
        .pwrsts = PWRSTS_OFF_ON,
};

static struct gdsc mvs1_gdsc = {
        .gdscr = 0xd98,
        .pd = {
                .name = "mvs1_gdsc",
        },
        .flags = HW_CTRL_TRIGGER,
        .pwrsts = PWRSTS_OFF_ON,
};

static struct clk_regmap *video_cc_sm8250_clocks[] = {
        [VIDEO_CC_MVS0_CLK] = &video_cc_mvs0_clk.clkr,
        [VIDEO_CC_MVS0_CLK_SRC] = &video_cc_mvs0_clk_src.clkr,
        [VIDEO_CC_MVS0_DIV_CLK_SRC] = &video_cc_mvs0_div_clk_src.clkr,
        [VIDEO_CC_MVS0C_CLK] = &video_cc_mvs0c_clk.clkr,
        [VIDEO_CC_MVS0C_DIV2_DIV_CLK_SRC] = &video_cc_mvs0c_div2_div_clk_src.clkr,
        [VIDEO_CC_MVS1_CLK_SRC] = &video_cc_mvs1_clk_src.clkr,
        [VIDEO_CC_MVS1_DIV2_CLK] = &video_cc_mvs1_div2_clk.clkr,
        [VIDEO_CC_MVS1C_CLK] = &video_cc_mvs1c_clk.clkr,
        [VIDEO_CC_MVS1C_DIV2_DIV_CLK_SRC] = &video_cc_mvs1c_div2_div_clk_src.clkr,
        [VIDEO_CC_PLL0] = &video_pll0.clkr,
        [VIDEO_CC_PLL1] = &video_pll1.clkr,
};

static const struct qcom_reset_map video_cc_sm8250_resets[] = {
        [VIDEO_CC_CVP_INTERFACE_BCR] = { 0xe54 },
        [VIDEO_CC_CVP_MVS0_BCR] = { 0xd14 },
        [VIDEO_CC_MVS0C_CLK_ARES] = { 0xc34, .bit = 2, .udelay = 150 },
        [VIDEO_CC_CVP_MVS0C_BCR] = { 0xbf4 },
        [VIDEO_CC_CVP_MVS1_BCR] = { 0xd94 },
        [VIDEO_CC_MVS1C_CLK_ARES] = { 0xcd4, .bit = 2, .udelay = 150 },
        [VIDEO_CC_CVP_MVS1C_BCR] = { 0xc94 },
};

static struct gdsc *video_cc_sm8250_gdscs[] = {
        [MVS0C_GDSC] = &mvs0c_gdsc,
        [MVS1C_GDSC] = &mvs1c_gdsc,
        [MVS0_GDSC] = &mvs0_gdsc,
        [MVS1_GDSC] = &mvs1_gdsc,
};

static const struct regmap_config video_cc_sm8250_regmap_config = {
        .reg_bits = 32,
        .reg_stride = 4,
        .val_bits = 32,
        .max_register = 0xf4c,
        .fast_io = true,
};

static const struct qcom_cc_desc video_cc_sm8250_desc = {
        .config = &video_cc_sm8250_regmap_config,
        .clks = video_cc_sm8250_clocks,
        .num_clks = ARRAY_SIZE(video_cc_sm8250_clocks),
        .resets = video_cc_sm8250_resets,
        .num_resets = ARRAY_SIZE(video_cc_sm8250_resets),
        .gdscs = video_cc_sm8250_gdscs,
        .num_gdscs = ARRAY_SIZE(video_cc_sm8250_gdscs),
};

static const struct of_device_id video_cc_sm8250_match_table[] = {
        { .compatible = "qcom,sm8250-videocc" },
        { }
};
MODULE_DEVICE_TABLE(of, video_cc_sm8250_match_table);

static int video_cc_sm8250_probe(struct platform_device *pdev)
{
        struct regmap *regmap;
        int ret;

        ret = devm_pm_runtime_enable(&pdev->dev);
        if (ret)
                return ret;

        ret = pm_runtime_resume_and_get(&pdev->dev);
        if (ret)
                return ret;

        regmap = qcom_cc_map(pdev, &video_cc_sm8250_desc);
        if (IS_ERR(regmap)) {
                pm_runtime_put(&pdev->dev);
                return PTR_ERR(regmap);
        }

        clk_lucid_pll_configure(&video_pll0, regmap, &video_pll0_config);
        clk_lucid_pll_configure(&video_pll1, regmap, &video_pll1_config);

        /* Keep some clocks always-on */
        qcom_branch_set_clk_en(regmap, 0xe58); /* VIDEO_CC_AHB_CLK */
        qcom_branch_set_clk_en(regmap, 0xeec); /* VIDEO_CC_XO_CLK */

        ret = qcom_cc_really_probe(&pdev->dev, &video_cc_sm8250_desc, regmap);

        pm_runtime_put(&pdev->dev);

        return ret;
}

static struct platform_driver video_cc_sm8250_driver = {
        .probe  = video_cc_sm8250_probe,
        .driver = {
                .name = "sm8250-videocc",
                .of_match_table = video_cc_sm8250_match_table,
        },
};

module_platform_driver(video_cc_sm8250_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("QTI VIDEOCC SM8250 Driver");