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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2021, The Linux Foundation. All rights reserved.
*/
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/pm_clock.h>
#include <linux/pm_runtime.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,lpass-sc7280.h>
#include "clk-regmap.h"
#include "clk-branch.h"
#include "common.h"
static struct clk_branch lpass_top_cc_lpi_q6_axim_hs_clk = {
.halt_reg = 0x0,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x0,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_top_cc_lpi_q6_axim_hs_clk",
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_qdsp6ss_core_clk = {
.halt_reg = 0x20,
/* CLK_OFF would not toggle until LPASS is out of reset */
.halt_check = BRANCH_HALT_SKIP,
.clkr = {
.enable_reg = 0x20,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_qdsp6ss_core_clk",
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_qdsp6ss_xo_clk = {
.halt_reg = 0x38,
/* CLK_OFF would not toggle until LPASS is out of reset */
.halt_check = BRANCH_HALT_SKIP,
.clkr = {
.enable_reg = 0x38,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_qdsp6ss_xo_clk",
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_qdsp6ss_sleep_clk = {
.halt_reg = 0x3c,
/* CLK_OFF would not toggle until LPASS is out of reset */
.halt_check = BRANCH_HALT_SKIP,
.clkr = {
.enable_reg = 0x3c,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_qdsp6ss_sleep_clk",
.ops = &clk_branch2_ops,
},
},
};
static struct regmap_config lpass_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
};
static struct clk_regmap *lpass_cc_top_sc7280_clocks[] = {
[LPASS_TOP_CC_LPI_Q6_AXIM_HS_CLK] =
&lpass_top_cc_lpi_q6_axim_hs_clk.clkr,
};
static const struct qcom_cc_desc lpass_cc_top_sc7280_desc = {
.config = &lpass_regmap_config,
.clks = lpass_cc_top_sc7280_clocks,
.num_clks = ARRAY_SIZE(lpass_cc_top_sc7280_clocks),
};
static struct clk_regmap *lpass_qdsp6ss_sc7280_clocks[] = {
[LPASS_QDSP6SS_XO_CLK] = &lpass_qdsp6ss_xo_clk.clkr,
[LPASS_QDSP6SS_SLEEP_CLK] = &lpass_qdsp6ss_sleep_clk.clkr,
[LPASS_QDSP6SS_CORE_CLK] = &lpass_qdsp6ss_core_clk.clkr,
};
static const struct qcom_cc_desc lpass_qdsp6ss_sc7280_desc = {
.config = &lpass_regmap_config,
.clks = lpass_qdsp6ss_sc7280_clocks,
.num_clks = ARRAY_SIZE(lpass_qdsp6ss_sc7280_clocks),
};
static int lpass_cc_sc7280_probe(struct platform_device *pdev)
{
const struct qcom_cc_desc *desc;
int ret;
ret = devm_pm_runtime_enable(&pdev->dev);
if (ret)
return ret;
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 err_destroy_pm_clk;
}
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret)
goto err_destroy_pm_clk;
if (!of_property_read_bool(pdev->dev.of_node, "qcom,adsp-pil-mode")) {
lpass_regmap_config.name = "qdsp6ss";
lpass_regmap_config.max_register = 0x3f;
desc = &lpass_qdsp6ss_sc7280_desc;
ret = qcom_cc_probe_by_index(pdev, 0, desc);
if (ret)
goto err_put_rpm;
}
lpass_regmap_config.name = "top_cc";
lpass_regmap_config.max_register = 0x4;
desc = &lpass_cc_top_sc7280_desc;
ret = qcom_cc_probe_by_index(pdev, 1, desc);
if (ret)
goto err_put_rpm;
pm_runtime_put(&pdev->dev);
return 0;
err_put_rpm:
pm_runtime_put_sync(&pdev->dev);
err_destroy_pm_clk:
pm_clk_destroy(&pdev->dev);
return ret;
}
static const struct of_device_id lpass_cc_sc7280_match_table[] = {
{ .compatible = "qcom,sc7280-lpasscc" },
{ }
};
MODULE_DEVICE_TABLE(of, lpass_cc_sc7280_match_table);
static struct platform_driver lpass_cc_sc7280_driver = {
.probe = lpass_cc_sc7280_probe,
.driver = {
.name = "sc7280-lpasscc",
.of_match_table = lpass_cc_sc7280_match_table,
},
};
static int __init lpass_cc_sc7280_init(void)
{
return platform_driver_register(&lpass_cc_sc7280_driver);
}
subsys_initcall(lpass_cc_sc7280_init);
static void __exit lpass_cc_sc7280_exit(void)
{
platform_driver_unregister(&lpass_cc_sc7280_driver);
}
module_exit(lpass_cc_sc7280_exit);
MODULE_DESCRIPTION("QTI LPASS_CC SC7280 Driver");
MODULE_LICENSE("GPL v2");
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