diff options
Diffstat (limited to 'drivers/clk/qcom/lpasscc-sdm845.c')
| -rw-r--r-- | drivers/clk/qcom/lpasscc-sdm845.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/clk/qcom/lpasscc-sdm845.c b/drivers/clk/qcom/lpasscc-sdm845.c new file mode 100644 index 000000000000..e246b99dfbc6 --- /dev/null +++ b/drivers/clk/qcom/lpasscc-sdm845.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include <linux/platform_device.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/regmap.h> + +#include <dt-bindings/clock/qcom,lpass-sdm845.h> + +#include "clk-regmap.h" +#include "clk-branch.h" +#include "common.h" + +static struct clk_branch lpass_q6ss_ahbm_aon_clk = { + .halt_reg = 0x12000, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x12000, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_q6ss_ahbm_aon_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lpass_q6ss_ahbs_aon_clk = { + .halt_reg = 0x1f000, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x1f000, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_q6ss_ahbs_aon_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_sdm845_clocks[] = { + [LPASS_Q6SS_AHBM_AON_CLK] = &lpass_q6ss_ahbm_aon_clk.clkr, + [LPASS_Q6SS_AHBS_AON_CLK] = &lpass_q6ss_ahbs_aon_clk.clkr, +}; + +static const struct qcom_cc_desc lpass_cc_sdm845_desc = { + .config = &lpass_regmap_config, + .clks = lpass_cc_sdm845_clocks, + .num_clks = ARRAY_SIZE(lpass_cc_sdm845_clocks), +}; + +static struct clk_regmap *lpass_qdsp6ss_sdm845_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_sdm845_desc = { + .config = &lpass_regmap_config, + .clks = lpass_qdsp6ss_sdm845_clocks, + .num_clks = ARRAY_SIZE(lpass_qdsp6ss_sdm845_clocks), +}; + +static int lpass_clocks_sdm845_probe(struct platform_device *pdev, int index, + const struct qcom_cc_desc *desc) +{ + struct regmap *regmap; + struct resource *res; + void __iomem *base; + + res = platform_get_resource(pdev, IORESOURCE_MEM, index); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + regmap = devm_regmap_init_mmio(&pdev->dev, base, desc->config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return qcom_cc_really_probe(pdev, desc, regmap); +} + +static int lpass_cc_sdm845_probe(struct platform_device *pdev) +{ + const struct qcom_cc_desc *desc; + int ret; + + lpass_regmap_config.name = "cc"; + desc = &lpass_cc_sdm845_desc; + + ret = lpass_clocks_sdm845_probe(pdev, 0, desc); + if (ret) + return ret; + + lpass_regmap_config.name = "qdsp6ss"; + desc = &lpass_qdsp6ss_sdm845_desc; + + return lpass_clocks_sdm845_probe(pdev, 1, desc); +} + +static const struct of_device_id lpass_cc_sdm845_match_table[] = { + { .compatible = "qcom,sdm845-lpasscc" }, + { } +}; +MODULE_DEVICE_TABLE(of, lpass_cc_sdm845_match_table); + +static struct platform_driver lpass_cc_sdm845_driver = { + .probe = lpass_cc_sdm845_probe, + .driver = { + .name = "sdm845-lpasscc", + .of_match_table = lpass_cc_sdm845_match_table, + }, +}; + +static int __init lpass_cc_sdm845_init(void) +{ + return platform_driver_register(&lpass_cc_sdm845_driver); +} +subsys_initcall(lpass_cc_sdm845_init); + +static void __exit lpass_cc_sdm845_exit(void) +{ + platform_driver_unregister(&lpass_cc_sdm845_driver); +} +module_exit(lpass_cc_sdm845_exit); + +MODULE_DESCRIPTION("QTI LPASS_CC SDM845 Driver"); +MODULE_LICENSE("GPL v2"); |