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linux/drivers/clk/qcom/dispcc-sm6115.c
Konrad Dybcio d09ec6f987 clk: qcom: Use qcom_branch_set_clk_en() 
Instead of magically poking at the bit0 of branch clocks' CBCR, use
the newly introduced helper.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240212-topic-clk_branch_en-v7-2-5b79eb7278b2@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2024-02-14 11:59:07 -06:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Based on dispcc-qcm2290.c
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2021, Linaro Ltd.
*/
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,sm6115-dispcc.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 "gdsc.h"
enum {
DT_BI_TCXO,
DT_SLEEP_CLK,
DT_DSI0_PHY_PLL_OUT_BYTECLK,
DT_DSI0_PHY_PLL_OUT_DSICLK,
DT_GPLL0_DISP_DIV,
};
enum {
P_BI_TCXO,
P_DISP_CC_PLL0_OUT_MAIN,
P_DSI0_PHY_PLL_OUT_BYTECLK,
P_DSI0_PHY_PLL_OUT_DSICLK,
P_GPLL0_OUT_MAIN,
P_SLEEP_CLK,
};
static const struct clk_parent_data parent_data_tcxo = { .index = DT_BI_TCXO };
static const struct pll_vco spark_vco[] = {
{ 500000000, 1000000000, 2 },
};
/* 768MHz configuration */
static const struct alpha_pll_config disp_cc_pll0_config = {
.l = 0x28,
.alpha = 0x0,
.alpha_en_mask = BIT(24),
.vco_val = 0x2 << 20,
.vco_mask = GENMASK(21, 20),
.main_output_mask = BIT(0),
.config_ctl_val = 0x4001055B,
};
static struct clk_alpha_pll disp_cc_pll0 = {
.offset = 0x0,
.vco_table = spark_vco,
.num_vco = ARRAY_SIZE(spark_vco),
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
.clkr = {
.hw.init = &(struct clk_init_data){
.name = "disp_cc_pll0",
.parent_data = &parent_data_tcxo,
.num_parents = 1,
.ops = &clk_alpha_pll_ops,
},
},
};
static const struct clk_div_table post_div_table_disp_cc_pll0_out_main[] = {
{ 0x0, 1 },
{ }
};
static struct clk_alpha_pll_postdiv disp_cc_pll0_out_main = {
.offset = 0x0,
.post_div_shift = 8,
.post_div_table = post_div_table_disp_cc_pll0_out_main,
.num_post_div = ARRAY_SIZE(post_div_table_disp_cc_pll0_out_main),
.width = 4,
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_pll0_out_main",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_pll0.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_alpha_pll_postdiv_ops,
},
};
static const struct parent_map disp_cc_parent_map_0[] = {
{ P_BI_TCXO, 0 },
{ P_DSI0_PHY_PLL_OUT_BYTECLK, 1 },
};
static const struct clk_parent_data disp_cc_parent_data_0[] = {
{ .index = DT_BI_TCXO },
{ .index = DT_DSI0_PHY_PLL_OUT_BYTECLK },
};
static const struct parent_map disp_cc_parent_map_1[] = {
{ P_BI_TCXO, 0 },
};
static const struct clk_parent_data disp_cc_parent_data_1[] = {
{ .index = DT_BI_TCXO },
};
static const struct parent_map disp_cc_parent_map_2[] = {
{ P_BI_TCXO, 0 },
{ P_GPLL0_OUT_MAIN, 4 },
};
static const struct clk_parent_data disp_cc_parent_data_2[] = {
{ .index = DT_BI_TCXO },
{ .index = DT_GPLL0_DISP_DIV },
};
static const struct parent_map disp_cc_parent_map_3[] = {
{ P_BI_TCXO, 0 },
{ P_DISP_CC_PLL0_OUT_MAIN, 1 },
};
static const struct clk_parent_data disp_cc_parent_data_3[] = {
{ .index = DT_BI_TCXO },
{ .hw = &disp_cc_pll0_out_main.clkr.hw },
};
static const struct parent_map disp_cc_parent_map_4[] = {
{ P_BI_TCXO, 0 },
{ P_DSI0_PHY_PLL_OUT_DSICLK, 1 },
};
static const struct clk_parent_data disp_cc_parent_data_4[] = {
{ .index = DT_BI_TCXO },
{ .index = DT_DSI0_PHY_PLL_OUT_DSICLK },
};
static const struct parent_map disp_cc_parent_map_5[] = {
{ P_SLEEP_CLK, 0 },
};
static const struct clk_parent_data disp_cc_parent_data_5[] = {
{ .index = DT_SLEEP_CLK, },
};
static struct clk_rcg2 disp_cc_mdss_byte0_clk_src = {
.cmd_rcgr = 0x20bc,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_0,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_byte0_clk_src",
.parent_data = disp_cc_parent_data_0,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_0),
/* For set_rate and set_parent to succeed, parent(s) must be enabled */
.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE | CLK_GET_RATE_NOCACHE,
.ops = &clk_byte2_ops,
},
};
static struct clk_regmap_div disp_cc_mdss_byte0_div_clk_src = {
.reg = 0x20d4,
.shift = 0,
.width = 2,
.clkr.hw.init = &(struct clk_init_data) {
.name = "disp_cc_mdss_byte0_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_byte0_clk_src.clkr.hw,
},
.num_parents = 1,
.ops = &clk_regmap_div_ops,
},
};
static const struct freq_tbl ftbl_disp_cc_mdss_ahb_clk_src[] = {
F(19200000, P_BI_TCXO, 1, 0, 0),
F(37500000, P_GPLL0_OUT_MAIN, 8, 0, 0),
F(75000000, P_GPLL0_OUT_MAIN, 4, 0, 0),
{ }
};
static struct clk_rcg2 disp_cc_mdss_ahb_clk_src = {
.cmd_rcgr = 0x2154,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_2,
.freq_tbl = ftbl_disp_cc_mdss_ahb_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_ahb_clk_src",
.parent_data = disp_cc_parent_data_2,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_2),
.ops = &clk_rcg2_shared_ops,
},
};
static const struct freq_tbl ftbl_disp_cc_mdss_esc0_clk_src[] = {
F(19200000, P_BI_TCXO, 1, 0, 0),
{ }
};
static struct clk_rcg2 disp_cc_mdss_esc0_clk_src = {
.cmd_rcgr = 0x20d8,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_0,
.freq_tbl = ftbl_disp_cc_mdss_esc0_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_esc0_clk_src",
.parent_data = disp_cc_parent_data_0,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_0),
.ops = &clk_rcg2_ops,
},
};
static const struct freq_tbl ftbl_disp_cc_mdss_mdp_clk_src[] = {
F(19200000, P_BI_TCXO, 1, 0, 0),
F(192000000, P_DISP_CC_PLL0_OUT_MAIN, 4, 0, 0),
F(256000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
F(307200000, P_DISP_CC_PLL0_OUT_MAIN, 2.5, 0, 0),
F(384000000, P_DISP_CC_PLL0_OUT_MAIN, 2, 0, 0),
{ }
};
static struct clk_rcg2 disp_cc_mdss_mdp_clk_src = {
.cmd_rcgr = 0x2074,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_3,
.freq_tbl = ftbl_disp_cc_mdss_mdp_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_mdp_clk_src",
.parent_data = disp_cc_parent_data_3,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_shared_ops,
},
};
static struct clk_rcg2 disp_cc_mdss_pclk0_clk_src = {
.cmd_rcgr = 0x205c,
.mnd_width = 8,
.hid_width = 5,
.parent_map = disp_cc_parent_map_4,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_pclk0_clk_src",
.parent_data = disp_cc_parent_data_4,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_4),
/* For set_rate and set_parent to succeed, parent(s) must be enabled */
.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE | CLK_GET_RATE_NOCACHE,
.ops = &clk_pixel_ops,
},
};
static const struct freq_tbl ftbl_disp_cc_mdss_rot_clk_src[] = {
F(19200000, P_BI_TCXO, 1, 0, 0),
F(192000000, P_DISP_CC_PLL0_OUT_MAIN, 4, 0, 0),
F(256000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
F(307200000, P_DISP_CC_PLL0_OUT_MAIN, 2.5, 0, 0),
{ }
};
static struct clk_rcg2 disp_cc_mdss_rot_clk_src = {
.cmd_rcgr = 0x208c,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_3,
.freq_tbl = ftbl_disp_cc_mdss_rot_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_rot_clk_src",
.parent_data = disp_cc_parent_data_3,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_shared_ops,
},
};
static struct clk_rcg2 disp_cc_mdss_vsync_clk_src = {
.cmd_rcgr = 0x20a4,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_1,
.freq_tbl = ftbl_disp_cc_mdss_esc0_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_vsync_clk_src",
.parent_data = disp_cc_parent_data_1,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_1),
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_shared_ops,
},
};
static const struct freq_tbl ftbl_disp_cc_sleep_clk_src[] = {
F(32764, P_SLEEP_CLK, 1, 0, 0),
{ }
};
static struct clk_rcg2 disp_cc_sleep_clk_src = {
.cmd_rcgr = 0x6050,
.mnd_width = 0,
.hid_width = 5,
.parent_map = disp_cc_parent_map_5,
.freq_tbl = ftbl_disp_cc_sleep_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_sleep_clk_src",
.parent_data = disp_cc_parent_data_5,
.num_parents = ARRAY_SIZE(disp_cc_parent_data_5),
.ops = &clk_rcg2_ops,
},
};
static struct clk_branch disp_cc_mdss_ahb_clk = {
.halt_reg = 0x2044,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2044,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_ahb_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_ahb_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_byte0_clk = {
.halt_reg = 0x2024,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2024,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_byte0_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_byte0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_byte0_intf_clk = {
.halt_reg = 0x2028,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2028,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_byte0_intf_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_byte0_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_esc0_clk = {
.halt_reg = 0x202c,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x202c,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_esc0_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_esc0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_mdp_clk = {
.halt_reg = 0x2008,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2008,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_mdp_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_mdp_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_mdp_lut_clk = {
.halt_reg = 0x2018,
.halt_check = BRANCH_HALT_VOTED,
.clkr = {
.enable_reg = 0x2018,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_mdp_lut_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_mdp_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_non_gdsc_ahb_clk = {
.halt_reg = 0x4004,
.halt_check = BRANCH_HALT_VOTED,
.clkr = {
.enable_reg = 0x4004,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_non_gdsc_ahb_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_ahb_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_pclk0_clk = {
.halt_reg = 0x2004,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2004,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_pclk0_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_pclk0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_rot_clk = {
.halt_reg = 0x2010,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2010,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_rot_clk",
.parent_hws = (const struct clk_hw*[]) {
&disp_cc_mdss_rot_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_mdss_vsync_clk = {
.halt_reg = 0x2020,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x2020,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_vsync_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_mdss_vsync_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch disp_cc_sleep_clk = {
.halt_reg = 0x6068,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x6068,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "disp_cc_sleep_clk",
.parent_hws = (const struct clk_hw*[]){
&disp_cc_sleep_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct gdsc mdss_gdsc = {
.gdscr = 0x3000,
.pd = {
.name = "mdss_gdsc",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = HW_CTRL,
};
static struct gdsc *disp_cc_sm6115_gdscs[] = {
[MDSS_GDSC] = &mdss_gdsc,
};
static struct clk_regmap *disp_cc_sm6115_clocks[] = {
[DISP_CC_PLL0] = &disp_cc_pll0.clkr,
[DISP_CC_PLL0_OUT_MAIN] = &disp_cc_pll0_out_main.clkr,
[DISP_CC_MDSS_AHB_CLK] = &disp_cc_mdss_ahb_clk.clkr,
[DISP_CC_MDSS_AHB_CLK_SRC] = &disp_cc_mdss_ahb_clk_src.clkr,
[DISP_CC_MDSS_BYTE0_CLK] = &disp_cc_mdss_byte0_clk.clkr,
[DISP_CC_MDSS_BYTE0_CLK_SRC] = &disp_cc_mdss_byte0_clk_src.clkr,
[DISP_CC_MDSS_BYTE0_DIV_CLK_SRC] = &disp_cc_mdss_byte0_div_clk_src.clkr,
[DISP_CC_MDSS_BYTE0_INTF_CLK] = &disp_cc_mdss_byte0_intf_clk.clkr,
[DISP_CC_MDSS_ESC0_CLK] = &disp_cc_mdss_esc0_clk.clkr,
[DISP_CC_MDSS_ESC0_CLK_SRC] = &disp_cc_mdss_esc0_clk_src.clkr,
[DISP_CC_MDSS_MDP_CLK] = &disp_cc_mdss_mdp_clk.clkr,
[DISP_CC_MDSS_MDP_CLK_SRC] = &disp_cc_mdss_mdp_clk_src.clkr,
[DISP_CC_MDSS_MDP_LUT_CLK] = &disp_cc_mdss_mdp_lut_clk.clkr,
[DISP_CC_MDSS_NON_GDSC_AHB_CLK] = &disp_cc_mdss_non_gdsc_ahb_clk.clkr,
[DISP_CC_MDSS_PCLK0_CLK] = &disp_cc_mdss_pclk0_clk.clkr,
[DISP_CC_MDSS_PCLK0_CLK_SRC] = &disp_cc_mdss_pclk0_clk_src.clkr,
[DISP_CC_MDSS_ROT_CLK] = &disp_cc_mdss_rot_clk.clkr,
[DISP_CC_MDSS_ROT_CLK_SRC] = &disp_cc_mdss_rot_clk_src.clkr,
[DISP_CC_MDSS_VSYNC_CLK] = &disp_cc_mdss_vsync_clk.clkr,
[DISP_CC_MDSS_VSYNC_CLK_SRC] = &disp_cc_mdss_vsync_clk_src.clkr,
[DISP_CC_SLEEP_CLK] = &disp_cc_sleep_clk.clkr,
[DISP_CC_SLEEP_CLK_SRC] = &disp_cc_sleep_clk_src.clkr,
};
static const struct regmap_config disp_cc_sm6115_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = 0x10000,
.fast_io = true,
};
static const struct qcom_cc_desc disp_cc_sm6115_desc = {
.config = &disp_cc_sm6115_regmap_config,
.clks = disp_cc_sm6115_clocks,
.num_clks = ARRAY_SIZE(disp_cc_sm6115_clocks),
.gdscs = disp_cc_sm6115_gdscs,
.num_gdscs = ARRAY_SIZE(disp_cc_sm6115_gdscs),
};
static const struct of_device_id disp_cc_sm6115_match_table[] = {
{ .compatible = "qcom,sm6115-dispcc" },
{ }
};
MODULE_DEVICE_TABLE(of, disp_cc_sm6115_match_table);
static int disp_cc_sm6115_probe(struct platform_device *pdev)
{
struct regmap *regmap;
int ret;
regmap = qcom_cc_map(pdev, &disp_cc_sm6115_desc);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
clk_alpha_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);
/* Keep some clocks always-on */
qcom_branch_set_clk_en(regmap, 0x604c); /* DISP_CC_XO_CLK */
ret = qcom_cc_really_probe(pdev, &disp_cc_sm6115_desc, regmap);
if (ret) {
dev_err(&pdev->dev, "Failed to register DISP CC clocks\n");
return ret;
}
return ret;
}
static struct platform_driver disp_cc_sm6115_driver = {
.probe = disp_cc_sm6115_probe,
.driver = {
.name = "dispcc-sm6115",
.of_match_table = disp_cc_sm6115_match_table,
},
};
module_platform_driver(disp_cc_sm6115_driver);
MODULE_DESCRIPTION("Qualcomm SM6115 Display Clock controller");
MODULE_LICENSE("GPL");
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