root/drivers/clk/qcom/videocc-sc7180.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
 */

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

#include <dt-bindings/clock/qcom,videocc-sc7180.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 {
        P_BI_TCXO,
        P_VIDEO_PLL0_OUT_MAIN,
};

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

static struct clk_alpha_pll video_pll0 = {
        .offset = 0x42c,
        .vco_table = fabia_vco,
        .num_vco = ARRAY_SIZE(fabia_vco),
        .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
        .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_fabia_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 freq_tbl ftbl_video_cc_venus_clk_src[] = {
        F(19200000, P_BI_TCXO, 1, 0, 0),
        F(150000000, P_VIDEO_PLL0_OUT_MAIN, 4, 0, 0),
        F(270000000, P_VIDEO_PLL0_OUT_MAIN, 2.5, 0, 0),
        F(340000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
        F(434000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
        F(500000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
        { }
};

static struct clk_rcg2 video_cc_venus_clk_src = {
        .cmd_rcgr = 0x7f0,
        .mnd_width = 0,
        .hid_width = 5,
        .parent_map = video_cc_parent_map_1,
        .freq_tbl = ftbl_video_cc_venus_clk_src,
        .clkr.hw.init = &(struct clk_init_data){
                .name = "video_cc_venus_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 struct clk_branch video_cc_vcodec0_axi_clk = {
        .halt_reg = 0x9ec,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x9ec,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_vcodec0_axi_clk",
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_vcodec0_core_clk = {
        .halt_reg = 0x890,
        .halt_check = BRANCH_HALT_VOTED,
        .clkr = {
                .enable_reg = 0x890,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_vcodec0_core_clk",
                        .parent_hws = (const struct clk_hw*[]){
                                &video_cc_venus_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 = 0xa4c,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0xa4c,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_venus_ahb_clk",
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_venus_ctl_axi_clk = {
        .halt_reg = 0x9cc,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x9cc,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_venus_ctl_axi_clk",
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct clk_branch video_cc_venus_ctl_core_clk = {
        .halt_reg = 0x850,
        .halt_check = BRANCH_HALT,
        .clkr = {
                .enable_reg = 0x850,
                .enable_mask = BIT(0),
                .hw.init = &(struct clk_init_data){
                        .name = "video_cc_venus_ctl_core_clk",
                        .parent_hws = (const struct clk_hw*[]){
                                &video_cc_venus_clk_src.clkr.hw,
                        },
                        .num_parents = 1,
                        .flags = CLK_SET_RATE_PARENT,
                        .ops = &clk_branch2_ops,
                },
        },
};

static struct gdsc venus_gdsc = {
        .gdscr = 0x814,
        .pd = {
                .name = "venus_gdsc",
        },
        .pwrsts = PWRSTS_OFF_ON,
};

static struct gdsc vcodec0_gdsc = {
        .gdscr = 0x874,
        .pd = {
                .name = "vcodec0_gdsc",
        },
        .flags = HW_CTRL_TRIGGER,
        .pwrsts = PWRSTS_OFF_ON,
};

static struct clk_regmap *video_cc_sc7180_clocks[] = {
        [VIDEO_CC_VCODEC0_AXI_CLK] = &video_cc_vcodec0_axi_clk.clkr,
        [VIDEO_CC_VCODEC0_CORE_CLK] = &video_cc_vcodec0_core_clk.clkr,
        [VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
        [VIDEO_CC_VENUS_CLK_SRC] = &video_cc_venus_clk_src.clkr,
        [VIDEO_CC_VENUS_CTL_AXI_CLK] = &video_cc_venus_ctl_axi_clk.clkr,
        [VIDEO_CC_VENUS_CTL_CORE_CLK] = &video_cc_venus_ctl_core_clk.clkr,
        [VIDEO_PLL0] = &video_pll0.clkr,
};

static struct gdsc *video_cc_sc7180_gdscs[] = {
        [VENUS_GDSC] = &venus_gdsc,
        [VCODEC0_GDSC] = &vcodec0_gdsc,
};

static const struct regmap_config video_cc_sc7180_regmap_config = {
        .reg_bits = 32,
        .reg_stride = 4,
        .val_bits = 32,
        .max_register = 0xb94,
        .fast_io = true,
};

static const struct qcom_cc_desc video_cc_sc7180_desc = {
        .config = &video_cc_sc7180_regmap_config,
        .clks = video_cc_sc7180_clocks,
        .num_clks = ARRAY_SIZE(video_cc_sc7180_clocks),
        .gdscs = video_cc_sc7180_gdscs,
        .num_gdscs = ARRAY_SIZE(video_cc_sc7180_gdscs),
};

static const struct of_device_id video_cc_sc7180_match_table[] = {
        { .compatible = "qcom,sc7180-videocc" },
        { }
};
MODULE_DEVICE_TABLE(of, video_cc_sc7180_match_table);

static int video_cc_sc7180_probe(struct platform_device *pdev)
{
        struct regmap *regmap;
        struct alpha_pll_config video_pll0_config = {};

        regmap = qcom_cc_map(pdev, &video_cc_sc7180_desc);
        if (IS_ERR(regmap))
                return PTR_ERR(regmap);

        video_pll0_config.l = 0x1f;
        video_pll0_config.alpha = 0x4000;
        video_pll0_config.user_ctl_val = 0x00000001;
        video_pll0_config.user_ctl_hi_val = 0x00004805;

        clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);

        /* Keep VIDEO_CC_XO_CLK ALWAYS-ON */
        regmap_update_bits(regmap, 0x984, 0x1, 0x1);

        return qcom_cc_really_probe(&pdev->dev, &video_cc_sc7180_desc, regmap);
}

static struct platform_driver video_cc_sc7180_driver = {
        .probe = video_cc_sc7180_probe,
        .driver = {
                .name = "sc7180-videocc",
                .of_match_table = video_cc_sc7180_match_table,
        },
};

module_platform_driver(video_cc_sc7180_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("QTI VIDEOCC SC7180 Driver");