drivers/clk/qcom/evacc-glymur.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
 */

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

#include <dt-bindings/clock/qcom,glymur-evacc.h>

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

enum {
	DT_AHB_CLK,
	DT_BI_TCXO,
	DT_SLEEP_CLK,
};

enum {
	P_BI_TCXO,
	P_EVA_CC_PLL0_OUT_MAIN,
	P_SLEEP_CLK,
};

static const struct pll_vco taycan_eko_t_vco[] = {
	{ 249600000, 2500000000, 0 },
};

/* 840.0 MHz Configuration */
static const struct alpha_pll_config eva_cc_pll0_config = {
	.l = 0x2b,
	.alpha = 0xc000,
	.config_ctl_val = 0x25c400e7,
	.config_ctl_hi_val = 0x0a8060e0,
	.config_ctl_hi1_val = 0xf51dea20,
	.user_ctl_val = 0x00000008,
	.user_ctl_hi_val = 0x00000002,
};

static struct clk_alpha_pll eva_cc_pll0 = {
	.offset = 0x0,
	.config = &eva_cc_pll0_config,
	.vco_table = taycan_eko_t_vco,
	.num_vco = ARRAY_SIZE(taycan_eko_t_vco),
	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_TAYCAN_EKO_T],
	.clkr = {
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_pll0",
			.parent_data = &(const struct clk_parent_data) {
				.index = DT_BI_TCXO,
			},
			.num_parents = 1,
			.ops = &clk_alpha_pll_taycan_eko_t_ops,
		},
	},
};

static const struct parent_map eva_cc_parent_map_0[] = {
	{ P_BI_TCXO, 0 },
};

static const struct clk_parent_data eva_cc_parent_data_0[] = {
	{ .index = DT_BI_TCXO },
};

static const struct parent_map eva_cc_parent_map_1[] = {
	{ P_BI_TCXO, 0 },
	{ P_EVA_CC_PLL0_OUT_MAIN, 1 },
};

static const struct clk_parent_data eva_cc_parent_data_1[] = {
	{ .index = DT_BI_TCXO },
	{ .hw = &eva_cc_pll0.clkr.hw },
};

static const struct parent_map eva_cc_parent_map_2[] = {
	{ P_SLEEP_CLK, 0 },
};

static const struct clk_parent_data eva_cc_parent_data_2[] = {
	{ .index = DT_SLEEP_CLK },
};

static const struct freq_tbl ftbl_eva_cc_ahb_clk_src[] = {
	F(19200000, P_BI_TCXO, 1, 0, 0),
	{ }
};

static struct clk_rcg2 eva_cc_ahb_clk_src = {
	.cmd_rcgr = 0x8018,
	.mnd_width = 0,
	.hid_width = 5,
	.parent_map = eva_cc_parent_map_0,
	.freq_tbl = ftbl_eva_cc_ahb_clk_src,
	.hw_clk_ctrl = true,
	.clkr = {
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_ahb_clk_src",
			.parent_data = eva_cc_parent_data_0,
			.num_parents = ARRAY_SIZE(eva_cc_parent_data_0),
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_rcg2_shared_ops,
		},
	},
};

static const struct freq_tbl ftbl_eva_cc_mvs0_clk_src[] = {
	F(840000000, P_EVA_CC_PLL0_OUT_MAIN, 1, 0, 0),
	F(1050000000, P_EVA_CC_PLL0_OUT_MAIN, 1, 0, 0),
	F(1350000000, P_EVA_CC_PLL0_OUT_MAIN, 1, 0, 0),
	F(1500000000, P_EVA_CC_PLL0_OUT_MAIN, 1, 0, 0),
	F(1650000000, P_EVA_CC_PLL0_OUT_MAIN, 1, 0, 0),
	{ }
};

static struct clk_rcg2 eva_cc_mvs0_clk_src = {
	.cmd_rcgr = 0x8000,
	.mnd_width = 0,
	.hid_width = 5,
	.parent_map = eva_cc_parent_map_1,
	.freq_tbl = ftbl_eva_cc_mvs0_clk_src,
	.hw_clk_ctrl = true,
	.clkr = {
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0_clk_src",
			.parent_data = eva_cc_parent_data_1,
			.num_parents = ARRAY_SIZE(eva_cc_parent_data_1),
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_rcg2_shared_ops,
		},
	},
};

static const struct freq_tbl ftbl_eva_cc_sleep_clk_src[] = {
	F(32000, P_SLEEP_CLK, 1, 0, 0),
	{ }
};

static struct clk_rcg2 eva_cc_sleep_clk_src = {
	.cmd_rcgr = 0x80e0,
	.mnd_width = 0,
	.hid_width = 5,
	.parent_map = eva_cc_parent_map_2,
	.freq_tbl = ftbl_eva_cc_sleep_clk_src,
	.hw_clk_ctrl = true,
	.clkr = {
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_sleep_clk_src",
			.parent_data = eva_cc_parent_data_2,
			.num_parents = ARRAY_SIZE(eva_cc_parent_data_2),
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_rcg2_shared_ops,
		},
	},
};

static struct clk_rcg2 eva_cc_xo_clk_src = {
	.cmd_rcgr = 0x80bc,
	.mnd_width = 0,
	.hid_width = 5,
	.parent_map = eva_cc_parent_map_0,
	.freq_tbl = ftbl_eva_cc_ahb_clk_src,
	.hw_clk_ctrl = true,
	.clkr = {
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_xo_clk_src",
			.parent_data = eva_cc_parent_data_0,
			.num_parents = ARRAY_SIZE(eva_cc_parent_data_0),
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_rcg2_shared_ops,
		},
	},
};

static struct clk_regmap_div eva_cc_mvs0_div_clk_src = {
	.reg = 0x809c,
	.shift = 0,
	.width = 4,
	.clkr.hw.init = &(const struct clk_init_data) {
		.name = "eva_cc_mvs0_div_clk_src",
		.parent_hws = (const struct clk_hw*[]) {
			&eva_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 eva_cc_mvs0c_div2_div_clk_src = {
	.reg = 0x8060,
	.shift = 0,
	.width = 4,
	.clkr.hw.init = &(const struct clk_init_data) {
		.name = "eva_cc_mvs0c_div2_div_clk_src",
		.parent_hws = (const struct clk_hw*[]) {
			&eva_cc_mvs0_clk_src.clkr.hw,
		},
		.num_parents = 1,
		.flags = CLK_SET_RATE_PARENT,
		.ops = &clk_regmap_div_ro_ops,
	},
};

static struct clk_branch eva_cc_mvs0_clk = {
	.halt_reg = 0x807c,
	.halt_check = BRANCH_HALT_VOTED,
	.hwcg_reg = 0x807c,
	.hwcg_bit = 1,
	.clkr = {
		.enable_reg = 0x807c,
		.enable_mask = BIT(0),
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0_clk",
			.parent_hws = (const struct clk_hw*[]) {
				&eva_cc_mvs0_div_clk_src.clkr.hw,
			},
			.num_parents = 1,
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_branch2_ops,
		},
	},
};

static struct clk_branch eva_cc_mvs0_freerun_clk = {
	.halt_reg = 0x808c,
	.halt_check = BRANCH_HALT,
	.clkr = {
		.enable_reg = 0x808c,
		.enable_mask = BIT(0),
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0_freerun_clk",
			.parent_hws = (const struct clk_hw*[]) {
				&eva_cc_mvs0_div_clk_src.clkr.hw,
			},
			.num_parents = 1,
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_branch2_ops,
		},
	},
};

static struct clk_branch eva_cc_mvs0_shift_clk = {
	.halt_reg = 0x80d8,
	.halt_check = BRANCH_HALT_VOTED,
	.hwcg_reg = 0x80d8,
	.hwcg_bit = 1,
	.clkr = {
		.enable_reg = 0x80d8,
		.enable_mask = BIT(0),
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0_shift_clk",
			.parent_hws = (const struct clk_hw*[]) {
				&eva_cc_xo_clk_src.clkr.hw,
			},
			.num_parents = 1,
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_branch2_ops,
		},
	},
};

static struct clk_branch eva_cc_mvs0c_clk = {
	.halt_reg = 0x804c,
	.halt_check = BRANCH_HALT,
	.clkr = {
		.enable_reg = 0x804c,
		.enable_mask = BIT(0),
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0c_clk",
			.parent_hws = (const struct clk_hw*[]) {
				&eva_cc_mvs0c_div2_div_clk_src.clkr.hw,
			},
			.num_parents = 1,
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_branch2_ops,
		},
	},
};

static struct clk_branch eva_cc_mvs0c_freerun_clk = {
	.halt_reg = 0x805c,
	.halt_check = BRANCH_HALT,
	.clkr = {
		.enable_reg = 0x805c,
		.enable_mask = BIT(0),
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0c_freerun_clk",
			.parent_hws = (const struct clk_hw*[]) {
				&eva_cc_mvs0c_div2_div_clk_src.clkr.hw,
			},
			.num_parents = 1,
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_branch2_ops,
		},
	},
};

static struct clk_branch eva_cc_mvs0c_shift_clk = {
	.halt_reg = 0x80dc,
	.halt_check = BRANCH_HALT_VOTED,
	.hwcg_reg = 0x80dc,
	.hwcg_bit = 1,
	.clkr = {
		.enable_reg = 0x80dc,
		.enable_mask = BIT(0),
		.hw.init = &(const struct clk_init_data) {
			.name = "eva_cc_mvs0c_shift_clk",
			.parent_hws = (const struct clk_hw*[]) {
				&eva_cc_xo_clk_src.clkr.hw,
			},
			.num_parents = 1,
			.flags = CLK_SET_RATE_PARENT,
			.ops = &clk_branch2_ops,
		},
	},
};

static struct gdsc eva_cc_mvs0c_gdsc = {
	.gdscr = 0x8034,
	.en_rest_wait_val = 0x2,
	.en_few_wait_val = 0x2,
	.clk_dis_wait_val = 0x6,
	.pd = {
		.name = "eva_cc_mvs0c_gdsc",
	},
	.pwrsts = PWRSTS_OFF_ON,
	.flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
};

static struct gdsc eva_cc_mvs0_gdsc = {
	.gdscr = 0x8068,
	.en_rest_wait_val = 0x2,
	.en_few_wait_val = 0x2,
	.clk_dis_wait_val = 0x6,
	.pd = {
		.name = "eva_cc_mvs0_gdsc",
	},
	.pwrsts = PWRSTS_OFF_ON,
	.flags = HW_CTRL_TRIGGER | POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
	.parent = &eva_cc_mvs0c_gdsc.pd,
};

static struct clk_regmap *eva_cc_glymur_clocks[] = {
	[EVA_CC_AHB_CLK_SRC] = &eva_cc_ahb_clk_src.clkr,
	[EVA_CC_MVS0_CLK] = &eva_cc_mvs0_clk.clkr,
	[EVA_CC_MVS0_CLK_SRC] = &eva_cc_mvs0_clk_src.clkr,
	[EVA_CC_MVS0_DIV_CLK_SRC] = &eva_cc_mvs0_div_clk_src.clkr,
	[EVA_CC_MVS0_FREERUN_CLK] = &eva_cc_mvs0_freerun_clk.clkr,
	[EVA_CC_MVS0_SHIFT_CLK] = &eva_cc_mvs0_shift_clk.clkr,
	[EVA_CC_MVS0C_CLK] = &eva_cc_mvs0c_clk.clkr,
	[EVA_CC_MVS0C_DIV2_DIV_CLK_SRC] = &eva_cc_mvs0c_div2_div_clk_src.clkr,
	[EVA_CC_MVS0C_FREERUN_CLK] = &eva_cc_mvs0c_freerun_clk.clkr,
	[EVA_CC_MVS0C_SHIFT_CLK] = &eva_cc_mvs0c_shift_clk.clkr,
	[EVA_CC_PLL0] = &eva_cc_pll0.clkr,
	[EVA_CC_SLEEP_CLK_SRC] = &eva_cc_sleep_clk_src.clkr,
	[EVA_CC_XO_CLK_SRC] = &eva_cc_xo_clk_src.clkr,
};

static struct gdsc *eva_cc_glymur_gdscs[] = {
	[EVA_CC_MVS0_GDSC] = &eva_cc_mvs0_gdsc,
	[EVA_CC_MVS0C_GDSC] = &eva_cc_mvs0c_gdsc,
};

static const struct qcom_reset_map eva_cc_glymur_resets[] = {
	[EVA_CC_INTERFACE_BCR] = { 0x80a0 },
	[EVA_CC_MVS0_BCR] = { 0x8064 },
	[EVA_CC_MVS0C_CLK_ARES] = { 0x804c, 2 },
	[EVA_CC_MVS0C_BCR] = { 0x8030 },
	[EVA_CC_MVS0C_FREERUN_CLK_ARES] = { 0x805c, 2 },
};

static struct clk_alpha_pll *eva_cc_glymur_plls[] = {
	&eva_cc_pll0,
};

static const u32 eva_cc_glymur_critical_cbcrs[] = {
	0x80a4, /* EVA_CC_AHB_CLK */
	0x80f8, /* EVA_CC_SLEEP_CLK */
	0x80d4, /* EVA_CC_XO_CLK */
};

static const struct regmap_config eva_cc_glymur_regmap_config = {
	.reg_bits = 32,
	.reg_stride = 4,
	.val_bits = 32,
	.max_register = 0x9f50,
	.fast_io = true,
};

static void clk_glymur_regs_configure(struct device *dev, struct regmap *regmap)
{
	/*
	 * Update CTRL_IN register as per HW recommendation to ensure clocks
	 * stay cycle‑aligned when the EVA core is ON.
	 */
	regmap_set_bits(regmap, 0x9f24, BIT(0));
}

static const struct qcom_cc_driver_data eva_cc_glymur_driver_data = {
	.alpha_plls = eva_cc_glymur_plls,
	.num_alpha_plls = ARRAY_SIZE(eva_cc_glymur_plls),
	.clk_cbcrs = eva_cc_glymur_critical_cbcrs,
	.num_clk_cbcrs = ARRAY_SIZE(eva_cc_glymur_critical_cbcrs),
	.clk_regs_configure = clk_glymur_regs_configure,
};

static const struct qcom_cc_desc eva_cc_glymur_desc = {
	.config = &eva_cc_glymur_regmap_config,
	.clks = eva_cc_glymur_clocks,
	.num_clks = ARRAY_SIZE(eva_cc_glymur_clocks),
	.resets = eva_cc_glymur_resets,
	.num_resets = ARRAY_SIZE(eva_cc_glymur_resets),
	.gdscs = eva_cc_glymur_gdscs,
	.num_gdscs = ARRAY_SIZE(eva_cc_glymur_gdscs),
	.use_rpm = true,
	.driver_data = &eva_cc_glymur_driver_data,
};

static const struct of_device_id eva_cc_glymur_match_table[] = {
	{ .compatible = "qcom,glymur-evacc" },
	{ }
};
MODULE_DEVICE_TABLE(of, eva_cc_glymur_match_table);

static int eva_cc_glymur_probe(struct platform_device *pdev)
{
	return qcom_cc_probe(pdev, &eva_cc_glymur_desc);
}

static struct platform_driver eva_cc_glymur_driver = {
	.probe = eva_cc_glymur_probe,
	.driver = {
		.name = "evacc-glymur",
		.of_match_table = eva_cc_glymur_match_table,
	},
};

module_platform_driver(eva_cc_glymur_driver);

MODULE_DESCRIPTION("QTI EVACC Glymur Driver");
MODULE_LICENSE("GPL");