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clk: qcom: lpass: Add support for LPASS clock controller for SC7180

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The Low Power Audio subsystem clocks are required for Audio client
to be able to request for the clocks and power domains.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lore.kernel.org/r/1595606878-2664-5-git-send-email-tdas@codeaurora.org
[sboyd@kernel.org: Drop unused ret in probe function]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Taniya Das 2020-07-24 21:37:58 +05:30 committed by Stephen Boyd
parent 47110b6aa5
commit edab812d80
3 changed files with 486 additions and 0 deletions
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9
drivers/clk/qcom/Kconfig
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@ -308,6 +308,15 @@ config SC_GCC_7180
Say Y if you want to use peripheral devices such as UART, SPI,
I2C, USB, UFS, SDCC, etc.
config SC_LPASS_CORECC_7180
tristate "SC7180 LPASS Core Clock Controller"
select SC_GCC_7180
help
Support for the LPASS(Low Power Audio Subsystem) core clock controller
on SC7180 devices.
Say Y if you want to use LPASS clocks and power domains of the LPASS
core clock controller.
config SC_GPUCC_7180
tristate "SC7180 Graphics Clock Controller"
select SC_GCC_7180

1
drivers/clk/qcom/Makefile
View File

@ -54,6 +54,7 @@ obj-$(CONFIG_QCS_TURING_404) += turingcc-qcs404.o
obj-$(CONFIG_SC_DISPCC_7180) += dispcc-sc7180.o
obj-$(CONFIG_SC_GCC_7180) += gcc-sc7180.o
obj-$(CONFIG_SC_GPUCC_7180) += gpucc-sc7180.o
obj-$(CONFIG_SC_LPASS_CORECC_7180) += lpasscorecc-sc7180.o
obj-$(CONFIG_SC_MSS_7180) += mss-sc7180.o
obj-$(CONFIG_SC_VIDEOCC_7180) += videocc-sc7180.o
obj-$(CONFIG_SDM_CAMCC_845) += camcc-sdm845.o

476
drivers/clk/qcom/lpasscorecc-sc7180.c Normal file
View File

@ -0,0 +1,476 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
*/
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/pm_clock.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,lpasscorecc-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_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD,
P_SLEEP_CLK,
};
static struct pll_vco fabia_vco[] = {
{ 249600000, 2000000000, 0 },
};
static const struct alpha_pll_config lpass_lpaaudio_dig_pll_config = {
.l = 0x20,
.alpha = 0x0,
.config_ctl_val = 0x20485699,
.config_ctl_hi_val = 0x00002067,
.test_ctl_val = 0x40000000,
.test_ctl_hi_val = 0x00000000,
.user_ctl_val = 0x00005105,
.user_ctl_hi_val = 0x00004805,
};
static const u8 clk_alpha_pll_regs_offset[][PLL_OFF_MAX_REGS] = {
[CLK_ALPHA_PLL_TYPE_FABIA] = {
[PLL_OFF_L_VAL] = 0x04,
[PLL_OFF_CAL_L_VAL] = 0x8,
[PLL_OFF_USER_CTL] = 0x0c,
[PLL_OFF_USER_CTL_U] = 0x10,
[PLL_OFF_USER_CTL_U1] = 0x14,
[PLL_OFF_CONFIG_CTL] = 0x18,
[PLL_OFF_CONFIG_CTL_U] = 0x1C,
[PLL_OFF_CONFIG_CTL_U1] = 0x20,
[PLL_OFF_TEST_CTL] = 0x24,
[PLL_OFF_TEST_CTL_U] = 0x28,
[PLL_OFF_STATUS] = 0x30,
[PLL_OFF_OPMODE] = 0x38,
[PLL_OFF_FRAC] = 0x40,
},
};
static struct clk_alpha_pll lpass_lpaaudio_dig_pll = {
.offset = 0x1000,
.vco_table = fabia_vco,
.num_vco = ARRAY_SIZE(fabia_vco),
.regs = clk_alpha_pll_regs_offset[CLK_ALPHA_PLL_TYPE_FABIA],
.clkr = {
.hw.init = &(struct clk_init_data){
.name = "lpass_lpaaudio_dig_pll",
.parent_data = &(const struct clk_parent_data){
.fw_name = "bi_tcxo",
},
.num_parents = 1,
.ops = &clk_alpha_pll_fabia_ops,
},
},
};
static const struct clk_div_table
post_div_table_lpass_lpaaudio_dig_pll_out_odd[] = {
{ 0x5, 5 },
{ }
};
static struct clk_alpha_pll_postdiv lpass_lpaaudio_dig_pll_out_odd = {
.offset = 0x1000,
.post_div_shift = 12,
.post_div_table = post_div_table_lpass_lpaaudio_dig_pll_out_odd,
.num_post_div =
ARRAY_SIZE(post_div_table_lpass_lpaaudio_dig_pll_out_odd),
.width = 4,
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
.clkr.hw.init = &(struct clk_init_data){
.name = "lpass_lpaaudio_dig_pll_out_odd",
.parent_data = &(const struct clk_parent_data){
.hw = &lpass_lpaaudio_dig_pll.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_alpha_pll_postdiv_fabia_ops,
},
};
static const struct parent_map lpass_core_cc_parent_map_0[] = {
{ P_BI_TCXO, 0 },
{ P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 5 },
};
static const struct clk_parent_data lpass_core_cc_parent_data_0[] = {
{ .fw_name = "bi_tcxo" },
{ .hw = &lpass_lpaaudio_dig_pll_out_odd.clkr.hw },
};
static const struct parent_map lpass_core_cc_parent_map_2[] = {
{ P_BI_TCXO, 0 },
};
static struct clk_rcg2 core_clk_src = {
.cmd_rcgr = 0x1d000,
.mnd_width = 8,
.hid_width = 5,
.parent_map = lpass_core_cc_parent_map_2,
.clkr.hw.init = &(struct clk_init_data){
.name = "core_clk_src",
.parent_data = &(const struct clk_parent_data){
.fw_name = "bi_tcxo",
},
.num_parents = 1,
.ops = &clk_rcg2_ops,
},
};
static const struct freq_tbl ftbl_ext_mclk0_clk_src[] = {
F(9600000, P_BI_TCXO, 2, 0, 0),
F(19200000, P_BI_TCXO, 1, 0, 0),
{ }
};
static const struct freq_tbl ftbl_ext_lpaif_clk_src[] = {
F(256000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 32),
F(512000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 16),
F(768000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 16),
F(1024000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 8),
F(1536000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 8),
F(2048000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 4),
F(3072000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 4),
F(4096000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 1, 2),
F(6144000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 1, 2),
F(8192000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 15, 0, 0),
F(9600000, P_BI_TCXO, 2, 0, 0),
F(12288000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 10, 0, 0),
F(19200000, P_BI_TCXO, 1, 0, 0),
F(24576000, P_LPASS_LPAAUDIO_DIG_PLL_OUT_ODD, 5, 0, 0),
{ }
};
static struct clk_rcg2 ext_mclk0_clk_src = {
.cmd_rcgr = 0x20000,
.mnd_width = 8,
.hid_width = 5,
.parent_map = lpass_core_cc_parent_map_0,
.freq_tbl = ftbl_ext_mclk0_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "ext_mclk0_clk_src",
.parent_data = lpass_core_cc_parent_data_0,
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_ops,
},
};
static struct clk_rcg2 lpaif_pri_clk_src = {
.cmd_rcgr = 0x10000,
.mnd_width = 16,
.hid_width = 5,
.parent_map = lpass_core_cc_parent_map_0,
.freq_tbl = ftbl_ext_lpaif_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "lpaif_pri_clk_src",
.parent_data = lpass_core_cc_parent_data_0,
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_ops,
},
};
static struct clk_rcg2 lpaif_sec_clk_src = {
.cmd_rcgr = 0x11000,
.mnd_width = 16,
.hid_width = 5,
.parent_map = lpass_core_cc_parent_map_0,
.freq_tbl = ftbl_ext_lpaif_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "lpaif_sec_clk_src",
.parent_data = lpass_core_cc_parent_data_0,
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_rcg2_ops,
},
};
static struct clk_branch lpass_audio_core_ext_mclk0_clk = {
.halt_reg = 0x20014,
.halt_check = BRANCH_HALT,
.hwcg_reg = 0x20014,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0x20014,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_audio_core_ext_mclk0_clk",
.parent_data = &(const struct clk_parent_data){
.hw = &ext_mclk0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_core_lpaif_pri_ibit_clk = {
.halt_reg = 0x10018,
.halt_check = BRANCH_HALT,
.hwcg_reg = 0x10018,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0x10018,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_audio_core_lpaif_pri_ibit_clk",
.parent_data = &(const struct clk_parent_data){
.hw = &lpaif_pri_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_core_lpaif_sec_ibit_clk = {
.halt_reg = 0x11018,
.halt_check = BRANCH_HALT,
.hwcg_reg = 0x11018,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0x11018,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_audio_core_lpaif_sec_ibit_clk",
.parent_data = &(const struct clk_parent_data){
.hw = &lpaif_sec_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_core_sysnoc_mport_core_clk = {
.halt_reg = 0x23000,
.halt_check = BRANCH_HALT,
.hwcg_reg = 0x23000,
.hwcg_bit = 1,
.clkr = {
.enable_reg = 0x23000,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_audio_core_sysnoc_mport_core_clk",
.parent_data = &(const struct clk_parent_data){
.hw = &core_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_regmap *lpass_core_cc_sc7180_clocks[] = {
[EXT_MCLK0_CLK_SRC] = &ext_mclk0_clk_src.clkr,
[LPAIF_PRI_CLK_SRC] = &lpaif_pri_clk_src.clkr,
[LPAIF_SEC_CLK_SRC] = &lpaif_sec_clk_src.clkr,
[CORE_CLK_SRC] = &core_clk_src.clkr,
[LPASS_AUDIO_CORE_EXT_MCLK0_CLK] = &lpass_audio_core_ext_mclk0_clk.clkr,
[LPASS_AUDIO_CORE_LPAIF_PRI_IBIT_CLK] =
&lpass_audio_core_lpaif_pri_ibit_clk.clkr,
[LPASS_AUDIO_CORE_LPAIF_SEC_IBIT_CLK] =
&lpass_audio_core_lpaif_sec_ibit_clk.clkr,
[LPASS_AUDIO_CORE_SYSNOC_MPORT_CORE_CLK] =
&lpass_audio_core_sysnoc_mport_core_clk.clkr,
[LPASS_LPAAUDIO_DIG_PLL] = &lpass_lpaaudio_dig_pll.clkr,
[LPASS_LPAAUDIO_DIG_PLL_OUT_ODD] = &lpass_lpaaudio_dig_pll_out_odd.clkr,
};
static struct gdsc lpass_pdc_hm_gdsc = {
.gdscr = 0x3090,
.pd = {
.name = "lpass_pdc_hm_gdsc",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = VOTABLE,
};
static struct gdsc lpass_audio_hm_gdsc = {
.gdscr = 0x9090,
.pd = {
.name = "lpass_audio_hm_gdsc",
},
.pwrsts = PWRSTS_OFF_ON,
};
static struct gdsc lpass_core_hm_gdsc = {
.gdscr = 0x0,
.pd = {
.name = "lpass_core_hm_gdsc",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = RETAIN_FF_ENABLE,
};
static struct gdsc *lpass_core_hm_sc7180_gdscs[] = {
[LPASS_CORE_HM_GDSCR] = &lpass_core_hm_gdsc,
};
static struct gdsc *lpass_audio_hm_sc7180_gdscs[] = {
[LPASS_PDC_HM_GDSCR] = &lpass_pdc_hm_gdsc,
[LPASS_AUDIO_HM_GDSCR] = &lpass_audio_hm_gdsc,
};
static struct regmap_config lpass_core_cc_sc7180_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
};
static const struct qcom_cc_desc lpass_core_hm_sc7180_desc = {
.config = &lpass_core_cc_sc7180_regmap_config,
.gdscs = lpass_core_hm_sc7180_gdscs,
.num_gdscs = ARRAY_SIZE(lpass_core_hm_sc7180_gdscs),
};
static const struct qcom_cc_desc lpass_core_cc_sc7180_desc = {
.config = &lpass_core_cc_sc7180_regmap_config,
.clks = lpass_core_cc_sc7180_clocks,
.num_clks = ARRAY_SIZE(lpass_core_cc_sc7180_clocks),
};
static const struct qcom_cc_desc lpass_audio_hm_sc7180_desc = {
.config = &lpass_core_cc_sc7180_regmap_config,
.gdscs = lpass_audio_hm_sc7180_gdscs,
.num_gdscs = ARRAY_SIZE(lpass_audio_hm_sc7180_gdscs),
};
static int lpass_core_cc_sc7180_probe(struct platform_device *pdev)
{
const struct qcom_cc_desc *desc;
struct regmap *regmap;
int ret;
lpass_core_cc_sc7180_regmap_config.name = "lpass_audio_cc";
desc = &lpass_audio_hm_sc7180_desc;
ret = qcom_cc_probe_by_index(pdev, 1, desc);
if (ret)
return ret;
lpass_core_cc_sc7180_regmap_config.name = "lpass_core_cc";
regmap = qcom_cc_map(pdev, &lpass_core_cc_sc7180_desc);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
/*
* Keep the CLK always-ON
* LPASS_AUDIO_CORE_SYSNOC_SWAY_CORE_CLK
*/
regmap_update_bits(regmap, 0x24000, BIT(0), BIT(0));
/* PLL settings */
regmap_write(regmap, 0x1008, 0x20);
regmap_update_bits(regmap, 0x1014, BIT(0), BIT(0));
clk_fabia_pll_configure(&lpass_lpaaudio_dig_pll, regmap,
&lpass_lpaaudio_dig_pll_config);
return qcom_cc_really_probe(pdev, &lpass_core_cc_sc7180_desc, regmap);
}
static int lpass_hm_core_probe(struct platform_device *pdev)
{
const struct qcom_cc_desc *desc;
lpass_core_cc_sc7180_regmap_config.name = "lpass_hm_core";
desc = &lpass_core_hm_sc7180_desc;
return qcom_cc_probe_by_index(pdev, 0, desc);
}
static const struct of_device_id lpass_core_cc_sc7180_match_table[] = {
{
.compatible = "qcom,sc7180-lpasshm",
.data = lpass_hm_core_probe,
},
{
.compatible = "qcom,sc7180-lpasscorecc",
.data = lpass_core_cc_sc7180_probe,
},
{ }
};
MODULE_DEVICE_TABLE(of, lpass_core_cc_sc7180_match_table);
static int lpass_core_sc7180_probe(struct platform_device *pdev)
{
int (*clk_probe)(struct platform_device *p);
int ret;
pm_runtime_enable(&pdev->dev);
ret = pm_clk_create(&pdev->dev);
if (ret)
return ret;
ret = pm_clk_add(&pdev->dev, "iface");
if (ret < 0) {
dev_err(&pdev->dev, "failed to acquire iface clock\n");
goto disable_pm_runtime;
}
clk_probe = of_device_get_match_data(&pdev->dev);
if (!clk_probe)
return -EINVAL;
ret = clk_probe(pdev);
if (ret)
goto destroy_pm_clk;
return 0;
destroy_pm_clk:
pm_clk_destroy(&pdev->dev);
disable_pm_runtime:
pm_runtime_disable(&pdev->dev);
return ret;
}
static const struct dev_pm_ops lpass_core_cc_pm_ops = {
SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL)
};
static struct platform_driver lpass_core_cc_sc7180_driver = {
.probe = lpass_core_sc7180_probe,
.driver = {
.name = "lpass_core_cc-sc7180",
.of_match_table = lpass_core_cc_sc7180_match_table,
.pm = &lpass_core_cc_pm_ops,
},
};
static int __init lpass_core_cc_sc7180_init(void)
{
return platform_driver_register(&lpass_core_cc_sc7180_driver);
}
subsys_initcall(lpass_core_cc_sc7180_init);
static void __exit lpass_core_cc_sc7180_exit(void)
{
platform_driver_unregister(&lpass_core_cc_sc7180_driver);
}
module_exit(lpass_core_cc_sc7180_exit);
MODULE_DESCRIPTION("QTI LPASS_CORE_CC SC7180 Driver");
MODULE_LICENSE("GPL v2");