15e77b4efSSivaprakash Murugesan // SPDX-License-Identifier: GPL-2.0 25e77b4efSSivaprakash Murugesan /* 35e77b4efSSivaprakash Murugesan * Copyright (c) 2018, The Linux Foundation. All rights reserved. 45e77b4efSSivaprakash Murugesan */ 55e77b4efSSivaprakash Murugesan 65e77b4efSSivaprakash Murugesan #include <linux/kernel.h> 75e77b4efSSivaprakash Murugesan #include <linux/err.h> 85e77b4efSSivaprakash Murugesan #include <linux/platform_device.h> 95e77b4efSSivaprakash Murugesan #include <linux/clk-provider.h> 105e77b4efSSivaprakash Murugesan #include <linux/regmap.h> 115e77b4efSSivaprakash Murugesan #include <linux/module.h> 125e77b4efSSivaprakash Murugesan 135e77b4efSSivaprakash Murugesan #include <dt-bindings/clock/qcom,apss-ipq.h> 145e77b4efSSivaprakash Murugesan 155e77b4efSSivaprakash Murugesan #include "common.h" 165e77b4efSSivaprakash Murugesan #include "clk-regmap.h" 175e77b4efSSivaprakash Murugesan #include "clk-branch.h" 185e77b4efSSivaprakash Murugesan #include "clk-alpha-pll.h" 19*43a56cbfSRobert Marko #include "clk-rcg.h" 205e77b4efSSivaprakash Murugesan 215e77b4efSSivaprakash Murugesan enum { 225e77b4efSSivaprakash Murugesan P_XO, 235e77b4efSSivaprakash Murugesan P_APSS_PLL_EARLY, 245e77b4efSSivaprakash Murugesan }; 255e77b4efSSivaprakash Murugesan 265e77b4efSSivaprakash Murugesan static const struct clk_parent_data parents_apcs_alias0_clk_src[] = { 275e77b4efSSivaprakash Murugesan { .fw_name = "xo" }, 285e77b4efSSivaprakash Murugesan { .fw_name = "pll" }, 295e77b4efSSivaprakash Murugesan }; 305e77b4efSSivaprakash Murugesan 315e77b4efSSivaprakash Murugesan static const struct parent_map parents_apcs_alias0_clk_src_map[] = { 325e77b4efSSivaprakash Murugesan { P_XO, 0 }, 335e77b4efSSivaprakash Murugesan { P_APSS_PLL_EARLY, 5 }, 345e77b4efSSivaprakash Murugesan }; 355e77b4efSSivaprakash Murugesan 36*43a56cbfSRobert Marko static struct clk_rcg2 apcs_alias0_clk_src = { 37*43a56cbfSRobert Marko .cmd_rcgr = 0x0050, 38*43a56cbfSRobert Marko .hid_width = 5, 395e77b4efSSivaprakash Murugesan .parent_map = parents_apcs_alias0_clk_src_map, 405e77b4efSSivaprakash Murugesan .clkr.hw.init = &(struct clk_init_data){ 415e77b4efSSivaprakash Murugesan .name = "apcs_alias0_clk_src", 425e77b4efSSivaprakash Murugesan .parent_data = parents_apcs_alias0_clk_src, 43*43a56cbfSRobert Marko .num_parents = ARRAY_SIZE(parents_apcs_alias0_clk_src), 44*43a56cbfSRobert Marko .ops = &clk_rcg2_mux_closest_ops, 455e77b4efSSivaprakash Murugesan .flags = CLK_SET_RATE_PARENT, 465e77b4efSSivaprakash Murugesan }, 475e77b4efSSivaprakash Murugesan }; 485e77b4efSSivaprakash Murugesan 495e77b4efSSivaprakash Murugesan static struct clk_branch apcs_alias0_core_clk = { 505e77b4efSSivaprakash Murugesan .halt_reg = 0x0058, 515e77b4efSSivaprakash Murugesan .clkr = { 525e77b4efSSivaprakash Murugesan .enable_reg = 0x0058, 535e77b4efSSivaprakash Murugesan .enable_mask = BIT(0), 545e77b4efSSivaprakash Murugesan .hw.init = &(struct clk_init_data){ 555e77b4efSSivaprakash Murugesan .name = "apcs_alias0_core_clk", 565e77b4efSSivaprakash Murugesan .parent_hws = (const struct clk_hw *[]){ 575e77b4efSSivaprakash Murugesan &apcs_alias0_clk_src.clkr.hw }, 585e77b4efSSivaprakash Murugesan .num_parents = 1, 595e77b4efSSivaprakash Murugesan .flags = CLK_SET_RATE_PARENT, 605e77b4efSSivaprakash Murugesan .ops = &clk_branch2_ops, 615e77b4efSSivaprakash Murugesan }, 625e77b4efSSivaprakash Murugesan }, 635e77b4efSSivaprakash Murugesan }; 645e77b4efSSivaprakash Murugesan 655e77b4efSSivaprakash Murugesan static const struct regmap_config apss_ipq6018_regmap_config = { 665e77b4efSSivaprakash Murugesan .reg_bits = 32, 675e77b4efSSivaprakash Murugesan .reg_stride = 4, 685e77b4efSSivaprakash Murugesan .val_bits = 32, 695e77b4efSSivaprakash Murugesan .max_register = 0x1000, 705e77b4efSSivaprakash Murugesan .fast_io = true, 715e77b4efSSivaprakash Murugesan }; 725e77b4efSSivaprakash Murugesan 735e77b4efSSivaprakash Murugesan static struct clk_regmap *apss_ipq6018_clks[] = { 745e77b4efSSivaprakash Murugesan [APCS_ALIAS0_CLK_SRC] = &apcs_alias0_clk_src.clkr, 755e77b4efSSivaprakash Murugesan [APCS_ALIAS0_CORE_CLK] = &apcs_alias0_core_clk.clkr, 765e77b4efSSivaprakash Murugesan }; 775e77b4efSSivaprakash Murugesan 785e77b4efSSivaprakash Murugesan static const struct qcom_cc_desc apss_ipq6018_desc = { 795e77b4efSSivaprakash Murugesan .config = &apss_ipq6018_regmap_config, 805e77b4efSSivaprakash Murugesan .clks = apss_ipq6018_clks, 815e77b4efSSivaprakash Murugesan .num_clks = ARRAY_SIZE(apss_ipq6018_clks), 825e77b4efSSivaprakash Murugesan }; 835e77b4efSSivaprakash Murugesan 845e77b4efSSivaprakash Murugesan static int apss_ipq6018_probe(struct platform_device *pdev) 855e77b4efSSivaprakash Murugesan { 865e77b4efSSivaprakash Murugesan struct regmap *regmap; 875e77b4efSSivaprakash Murugesan 885e77b4efSSivaprakash Murugesan regmap = dev_get_regmap(pdev->dev.parent, NULL); 89dbb988b4SWei Yongjun if (!regmap) 90dbb988b4SWei Yongjun return -ENODEV; 915e77b4efSSivaprakash Murugesan 925e77b4efSSivaprakash Murugesan return qcom_cc_really_probe(pdev, &apss_ipq6018_desc, regmap); 935e77b4efSSivaprakash Murugesan } 945e77b4efSSivaprakash Murugesan 955e77b4efSSivaprakash Murugesan static struct platform_driver apss_ipq6018_driver = { 965e77b4efSSivaprakash Murugesan .probe = apss_ipq6018_probe, 975e77b4efSSivaprakash Murugesan .driver = { 985e77b4efSSivaprakash Murugesan .name = "qcom,apss-ipq6018-clk", 995e77b4efSSivaprakash Murugesan }, 1005e77b4efSSivaprakash Murugesan }; 1015e77b4efSSivaprakash Murugesan 1025e77b4efSSivaprakash Murugesan module_platform_driver(apss_ipq6018_driver); 1035e77b4efSSivaprakash Murugesan 1045e77b4efSSivaprakash Murugesan MODULE_DESCRIPTION("QCOM APSS IPQ 6018 CLK Driver"); 1055e77b4efSSivaprakash Murugesan MODULE_LICENSE("GPL v2"); 106