root/drivers/clk/qcom/videocc-sm6350.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2021, The Linux Foundation. All rights reserved.
 * Copyright (c) 2021, Konrad Dybcio <konrad.dybcio@somainline.org>
 * Copyright (c) 2025, Luca Weiss <luca.weiss@fairphone.com>
 */

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

#include <dt-bindings/clock/qcom,sm6350-videocc.h>

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

enum {
        DT_IFACE,
        DT_BI_TCXO,
        DT_SLEEP_CLK,
};

enum {
        P_BI_TCXO,
        P_CHIP_SLEEP_CLK,
        P_VIDEO_PLL0_OUT_EVEN,
};

static const struct pll_vco fabia_vco[] = {
        { 125000000, 1000000000, 1 },
};

/* 600 MHz */
static const struct alpha_pll_config video_pll0_config = {
        .l = 0x1f,
        .alpha = 0x4000,
        .config_ctl_val = 0x20485699,
        .config_ctl_hi_val = 0x00002067,
        .test_ctl_val = 0x40000000,
        .test_ctl_hi_val = 0x00000002,
        .user_ctl_val = 0x00000101,
        .user_ctl_hi_val = 0x00004005,
};

static struct clk_alpha_pll video_pll0 = {
        .offset = 0x0,
        .vco_table = fabia_vco,
        .num_vco = ARRAY_SIZE(fabia_vco),
        .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
        .clkr = {
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_pll0",
                        .parent_data = &(const struct clk_parent_data) {
                                .index = DT_BI_TCXO,
                        },
                        .num_parents = 1,
                        .ops = &clk_alpha_pll_fabia_ops,
                },
        },
};

static const struct clk_div_table post_div_table_video_pll0_out_even[] = {
        { 0x1, 2 },
        { }
};

static struct clk_alpha_pll_postdiv video_pll0_out_even = {
        .offset = 0x0,
        .post_div_shift = 8,
        .post_div_table = post_div_table_video_pll0_out_even,
        .num_post_div = ARRAY_SIZE(post_div_table_video_pll0_out_even),
        .width = 4,
        .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
        .clkr.hw.init = &(const struct clk_init_data) {
                .name = "video_pll0_out_even",
                .parent_hws = (const struct clk_hw*[]) {
                        &video_pll0.clkr.hw,
                },
                .num_parents = 1,
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_alpha_pll_postdiv_fabia_ops,
        },
};

static const struct parent_map video_cc_parent_map_0[] = {
        { P_BI_TCXO, 0 },
        { P_VIDEO_PLL0_OUT_EVEN, 3 },
};

static const struct clk_parent_data video_cc_parent_data_0[] = {
        { .index = DT_BI_TCXO },
        { .hw = &video_pll0_out_even.clkr.hw },
};

static const struct parent_map video_cc_parent_map_1[] = {
        { P_CHIP_SLEEP_CLK, 0 },
};

static const struct clk_parent_data video_cc_parent_data_1[] = {
        { .index = DT_SLEEP_CLK },
};

static const struct freq_tbl ftbl_video_cc_iris_clk_src[] = {
        F(133250000, P_VIDEO_PLL0_OUT_EVEN, 2, 0, 0),
        F(240000000, P_VIDEO_PLL0_OUT_EVEN, 1.5, 0, 0),
        F(300000000, P_VIDEO_PLL0_OUT_EVEN, 1, 0, 0),
        F(380000000, P_VIDEO_PLL0_OUT_EVEN, 1, 0, 0),
        F(460000000, P_VIDEO_PLL0_OUT_EVEN, 1, 0, 0),
        { }
};

static struct clk_rcg2 video_cc_iris_clk_src = {
        .cmd_rcgr = 0x1000,
        .mnd_width = 0,
        .hid_width = 5,
        .parent_map = video_cc_parent_map_0,
        .freq_tbl = ftbl_video_cc_iris_clk_src,
        .clkr.hw.init = &(const struct clk_init_data) {
                .name = "video_cc_iris_clk_src",
                .parent_data = video_cc_parent_data_0,
                .num_parents = ARRAY_SIZE(video_cc_parent_data_0),
                .flags = CLK_SET_RATE_PARENT,
                .ops = &clk_rcg2_shared_ops,
        },
};

static const struct freq_tbl ftbl_video_cc_sleep_clk_src[] = {
        F(32764, P_CHIP_SLEEP_CLK, 1, 0, 0),
        { }
};

static struct clk_rcg2 video_cc_sleep_clk_src = {
        .cmd_rcgr = 0x701c,
        .mnd_width = 0,
        .hid_width = 5,
        .parent_map = video_cc_parent_map_1,
        .freq_tbl = ftbl_video_cc_sleep_clk_src,
        .clkr.hw.init = &(const struct clk_init_data) {
                .name = "video_cc_sleep_clk_src",
                .parent_data = video_cc_parent_data_1,
                .num_parents = ARRAY_SIZE(video_cc_parent_data_1),
                .ops = &clk_rcg2_ops,
        },
};

static struct clk_branch video_cc_iris_ahb_clk = {
        .halt_reg = 0x5004,
        .halt_check = BRANCH_VOTED,
        .clkr = {
                .enable_reg = 0x5004,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_iris_ahb_clk",
                        .parent_hws = (const struct clk_hw*[]) {
                                &video_cc_iris_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvs0_axi_clk = {
        .halt_reg = 0x800c,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x800c,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_mvs0_axi_clk",
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvs0_core_clk = {
        .halt_reg = 0x3010,
        .halt_check = BRANCH_VOTED,
        .hwcg_reg = 0x3010,
        .hwcg_bit = 1,
        .clkr = {
                .enable_reg = 0x3010,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_mvs0_core_clk",
                        .parent_hws = (const struct clk_hw*[]) {
                                &video_cc_iris_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvsc_core_clk = {
        .halt_reg = 0x2014,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x2014,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_mvsc_core_clk",
                        .parent_hws = (const struct clk_hw*[]) {
                                &video_cc_iris_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_mvsc_ctl_axi_clk = {
        .halt_reg = 0x8004,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x8004,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_mvsc_ctl_axi_clk",
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_sleep_clk = {
        .halt_reg = 0x7034,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x7034,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_sleep_clk",
                        .parent_hws = (const struct clk_hw*[]) {
                                &video_cc_sleep_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_venus_ahb_clk = {
        .halt_reg = 0x801c,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x801c,
                .enable_mask = BIT(0),
                .hw.init = &(const struct clk_init_data) {
                        .name = "video_cc_venus_ahb_clk",
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct gdsc mvsc_gdsc = {
        .gdscr = 0x2004,
        .en_rest_wait_val = 0x2,
        .en_few_wait_val = 0x2,
        .clk_dis_wait_val = 0x6,
        .pd = {
                .name = "mvsc_gdsc",
        },
        .pwrsts = PWRSTS_OFF_ON,
};

static struct gdsc mvs0_gdsc = {
        .gdscr = 0x3004,
        .en_rest_wait_val = 0x2,
        .en_few_wait_val = 0x2,
        .clk_dis_wait_val = 0x6,
        .pd = {
                .name = "mvs0_gdsc",
        },
        .pwrsts = PWRSTS_OFF_ON,
        .flags = HW_CTRL_TRIGGER,
};

static struct gdsc *video_cc_sm6350_gdscs[] = {
        [MVSC_GDSC] = &mvsc_gdsc,
        [MVS0_GDSC] = &mvs0_gdsc,
};

static struct clk_regmap *video_cc_sm6350_clocks[] = {
        [VIDEO_CC_IRIS_AHB_CLK] = &video_cc_iris_ahb_clk.clkr,
        [VIDEO_CC_IRIS_CLK_SRC] = &video_cc_iris_clk_src.clkr,
        [VIDEO_CC_MVS0_AXI_CLK] = &video_cc_mvs0_axi_clk.clkr,
        [VIDEO_CC_MVS0_CORE_CLK] = &video_cc_mvs0_core_clk.clkr,
        [VIDEO_CC_MVSC_CORE_CLK] = &video_cc_mvsc_core_clk.clkr,
        [VIDEO_CC_MVSC_CTL_AXI_CLK] = &video_cc_mvsc_ctl_axi_clk.clkr,
        [VIDEO_CC_SLEEP_CLK] = &video_cc_sleep_clk.clkr,
        [VIDEO_CC_SLEEP_CLK_SRC] = &video_cc_sleep_clk_src.clkr,
        [VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
        [VIDEO_PLL0] = &video_pll0.clkr,
        [VIDEO_PLL0_OUT_EVEN] = &video_pll0_out_even.clkr,
};

static const struct regmap_config video_cc_sm6350_regmap_config = {
        .reg_bits = 32,
        .reg_stride = 4,
        .val_bits = 32,
        .max_register = 0xb000,
        .fast_io = true,
};

static const struct qcom_cc_desc video_cc_sm6350_desc = {
        .config = &video_cc_sm6350_regmap_config,
        .clks = video_cc_sm6350_clocks,
        .num_clks = ARRAY_SIZE(video_cc_sm6350_clocks),
        .gdscs = video_cc_sm6350_gdscs,
        .num_gdscs = ARRAY_SIZE(video_cc_sm6350_gdscs),
};

static const struct of_device_id video_cc_sm6350_match_table[] = {
        { .compatible = "qcom,sm6350-videocc" },
        { }
};
MODULE_DEVICE_TABLE(of, video_cc_sm6350_match_table);

static int video_cc_sm6350_probe(struct platform_device *pdev)
{
        struct regmap *regmap;

        regmap = qcom_cc_map(pdev, &video_cc_sm6350_desc);
        if (IS_ERR(regmap))
                return PTR_ERR(regmap);

        clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);

        /* Keep some clocks always-on */
        qcom_branch_set_clk_en(regmap, 0x7018); /* VIDEO_CC_XO_CLK */

        return qcom_cc_really_probe(&pdev->dev, &video_cc_sm6350_desc, regmap);
}

static struct platform_driver video_cc_sm6350_driver = {
        .probe = video_cc_sm6350_probe,
        .driver = {
                .name = "video_cc-sm6350",
                .of_match_table = video_cc_sm6350_match_table,
        },
};

module_platform_driver(video_cc_sm6350_driver);

MODULE_DESCRIPTION("QTI VIDEO_CC SM6350 Driver");
MODULE_LICENSE("GPL");