linux/drivers/clk/qcom/videocc-sm8250.c
Dmitry Baryshkov a91c483b42 clk: qcom: videocc-sm8250: use runtime PM for the clock controller
On sm8250 dispcc and videocc registers are powered up by the MMCX power
domain. Use runtime PM calls to make sure that required power domain is
powered on while we access clock controller's registers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210829154757.784699-5-dmitry.baryshkov@linaro.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2021-10-14 17:50:52 -07:00

430 lines
10 KiB
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 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,
.supply = "mmcx",
};
static struct gdsc mvs1c_gdsc = {
.gdscr = 0xc98,
.pd = {
.name = "mvs1c_gdsc",
},
.flags = 0,
.pwrsts = PWRSTS_OFF_ON,
.supply = "mmcx",
};
static struct gdsc mvs0_gdsc = {
.gdscr = 0xd18,
.pd = {
.name = "mvs0_gdsc",
},
.flags = HW_CTRL,
.pwrsts = PWRSTS_OFF_ON,
.supply = "mmcx",
};
static struct gdsc mvs1_gdsc = {
.gdscr = 0xd98,
.pd = {
.name = "mvs1_gdsc",
},
.flags = HW_CTRL,
.pwrsts = PWRSTS_OFF_ON,
.supply = "mmcx",
};
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, 2 },
[VIDEO_CC_CVP_MVS0C_BCR] = { 0xbf4 },
[VIDEO_CC_CVP_MVS1_BCR] = { 0xd94 },
[VIDEO_CC_MVS1C_CLK_ARES] = { 0xcd4, 2 },
[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 void video_cc_sm8250_pm_runtime_disable(void *data)
{
pm_runtime_disable(data);
}
static int video_cc_sm8250_probe(struct platform_device *pdev)
{
struct regmap *regmap;
int ret;
pm_runtime_enable(&pdev->dev);
ret = devm_add_action_or_reset(&pdev->dev, video_cc_sm8250_pm_runtime_disable, &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 VIDEO_CC_AHB_CLK and VIDEO_CC_XO_CLK ALWAYS-ON */
regmap_update_bits(regmap, 0xe58, BIT(0), BIT(0));
regmap_update_bits(regmap, 0xeec, BIT(0), BIT(0));
ret = qcom_cc_really_probe(pdev, &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,
},
};
static int __init video_cc_sm8250_init(void)
{
return platform_driver_register(&video_cc_sm8250_driver);
}
subsys_initcall(video_cc_sm8250_init);
static void __exit video_cc_sm8250_exit(void)
{
platform_driver_unregister(&video_cc_sm8250_driver);
}
module_exit(video_cc_sm8250_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("QTI VIDEOCC SM8250 Driver");