diff options
Diffstat (limited to 'drivers/clk/qcom/lpasscc-sc7280.c')
| -rw-r--r-- | drivers/clk/qcom/lpasscc-sc7280.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/drivers/clk/qcom/lpasscc-sc7280.c b/drivers/clk/qcom/lpasscc-sc7280.c new file mode 100644 index 000000000..113146835 --- /dev/null +++ b/drivers/clk/qcom/lpasscc-sc7280.c @@ -0,0 +1,185 @@ +// 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; + + pm_runtime_enable(&pdev->dev); + ret = pm_clk_create(&pdev->dev); + if (ret) + goto disable_pm_runtime; + + 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); + +disable_pm_runtime: + pm_runtime_disable(&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"); |