diff options
Diffstat (limited to 'drivers/clk/qcom/q6sstop-qcs404.c')
| -rw-r--r-- | drivers/clk/qcom/q6sstop-qcs404.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c new file mode 100644 index 000000000..723f932fb --- /dev/null +++ b/drivers/clk/qcom/q6sstop-qcs404.c @@ -0,0 +1,223 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include <linux/bitops.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_clock.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> + +#include <dt-bindings/clock/qcom,q6sstopcc-qcs404.h> + +#include "clk-regmap.h" +#include "clk-branch.h" +#include "common.h" +#include "reset.h" + +static struct clk_branch lcc_ahbfabric_cbc_clk = { + .halt_reg = 0x1b004, + .halt_check = BRANCH_HALT, + .clkr = { + .enable_reg = 0x1b004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_ahbfabric_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_ahbs_cbc_clk = { + .halt_reg = 0x22000, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x22000, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_ahbs_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_tcm_slave_cbc_clk = { + .halt_reg = 0x1c000, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x1c000, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_tcm_slave_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_ahbm_cbc_clk = { + .halt_reg = 0x22004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x22004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_ahbm_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_axim_cbc_clk = { + .halt_reg = 0x1c004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x1c004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_axim_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_bcr_sleep_clk = { + .halt_reg = 0x6004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x6004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_bcr_sleep_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +/* TCSR clock */ +static struct clk_branch tcsr_lcc_csr_cbcr_clk = { + .halt_reg = 0x8008, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x8008, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "tcsr_lcc_csr_cbcr_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct regmap_config q6sstop_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .fast_io = true, +}; + +static struct clk_regmap *q6sstop_qcs404_clocks[] = { + [LCC_AHBFABRIC_CBC_CLK] = &lcc_ahbfabric_cbc_clk.clkr, + [LCC_Q6SS_AHBS_CBC_CLK] = &lcc_q6ss_ahbs_cbc_clk.clkr, + [LCC_Q6SS_TCM_SLAVE_CBC_CLK] = &lcc_q6ss_tcm_slave_cbc_clk.clkr, + [LCC_Q6SS_AHBM_CBC_CLK] = &lcc_q6ss_ahbm_cbc_clk.clkr, + [LCC_Q6SS_AXIM_CBC_CLK] = &lcc_q6ss_axim_cbc_clk.clkr, + [LCC_Q6SS_BCR_SLEEP_CLK] = &lcc_q6ss_bcr_sleep_clk.clkr, +}; + +static const struct qcom_reset_map q6sstop_qcs404_resets[] = { + [Q6SSTOP_BCR_RESET] = { 0x6000 }, +}; + +static const struct qcom_cc_desc q6sstop_qcs404_desc = { + .config = &q6sstop_regmap_config, + .clks = q6sstop_qcs404_clocks, + .num_clks = ARRAY_SIZE(q6sstop_qcs404_clocks), + .resets = q6sstop_qcs404_resets, + .num_resets = ARRAY_SIZE(q6sstop_qcs404_resets), +}; + +static struct clk_regmap *tcsr_qcs404_clocks[] = { + [TCSR_Q6SS_LCC_CBCR_CLK] = &tcsr_lcc_csr_cbcr_clk.clkr, +}; + +static const struct qcom_cc_desc tcsr_qcs404_desc = { + .config = &q6sstop_regmap_config, + .clks = tcsr_qcs404_clocks, + .num_clks = ARRAY_SIZE(tcsr_qcs404_clocks), +}; + +static const struct of_device_id q6sstopcc_qcs404_match_table[] = { + { .compatible = "qcom,qcs404-q6sstopcc" }, + { } +}; +MODULE_DEVICE_TABLE(of, q6sstopcc_qcs404_match_table); + +static int q6sstopcc_qcs404_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, NULL); + if (ret < 0) { + dev_err(&pdev->dev, "failed to acquire iface clock\n"); + goto destroy_pm_clk; + } + + q6sstop_regmap_config.name = "q6sstop_tcsr"; + desc = &tcsr_qcs404_desc; + + ret = qcom_cc_probe_by_index(pdev, 1, desc); + if (ret) + goto destroy_pm_clk; + + q6sstop_regmap_config.name = "q6sstop_cc"; + desc = &q6sstop_qcs404_desc; + + ret = qcom_cc_probe_by_index(pdev, 0, desc); + 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 int q6sstopcc_qcs404_remove(struct platform_device *pdev) +{ + pm_clk_destroy(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct dev_pm_ops q6sstopcc_pm_ops = { + SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL) +}; + +static struct platform_driver q6sstopcc_qcs404_driver = { + .probe = q6sstopcc_qcs404_probe, + .remove = q6sstopcc_qcs404_remove, + .driver = { + .name = "qcs404-q6sstopcc", + .of_match_table = q6sstopcc_qcs404_match_table, + .pm = &q6sstopcc_pm_ops, + }, +}; + +module_platform_driver(q6sstopcc_qcs404_driver); + +MODULE_DESCRIPTION("QTI QCS404 Q6SSTOP Clock Controller Driver"); +MODULE_LICENSE("GPL v2"); |