drivers/clk/qcom/gpucc-sc7180.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2019, The Linux Foundation. All rights reserved.
   4  */
   5
   6 #include <linux/clk-provider.h>
   7 #include <linux/module.h>
   8 #include <linux/platform_device.h>
   9 #include <linux/regmap.h>
  10
  11 #include <dt-bindings/clock/qcom,gpucc-sc7180.h>
  12
  13 #include "clk-alpha-pll.h"
  14 #include "clk-branch.h"
  15 #include "clk-rcg.h"
  16 #include "clk-regmap.h"
  17 #include "common.h"
  18 #include "gdsc.h"
  19
  20 #define CX_GMU_CBCR_SLEEP_MASK          0xF
  21 #define CX_GMU_CBCR_SLEEP_SHIFT         4
  22 #define CX_GMU_CBCR_WAKE_MASK           0xF
  23 #define CX_GMU_CBCR_WAKE_SHIFT          8
  24
  25 enum {
  26         P_BI_TCXO,
  27         P_GPLL0_OUT_MAIN,
  28         P_GPLL0_OUT_MAIN_DIV,
  29         P_GPU_CC_PLL1_OUT_MAIN,
  30 };
  31
  32 static const struct pll_vco fabia_vco[] = {
  33         { 249600000, 2000000000, 0 },
  34 };
  35
  36 static struct clk_alpha_pll gpu_cc_pll1 = {
  37         .offset = 0x100,
  38         .vco_table = fabia_vco,
  39         .num_vco = ARRAY_SIZE(fabia_vco),
  40         .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
  41         .clkr = {
  42                 .hw.init = &(struct clk_init_data){
  43                         .name = "gpu_cc_pll1",
  44                         .parent_data =  &(const struct clk_parent_data){
  45                                 .fw_name = "bi_tcxo",
  46                         },
  47                         .num_parents = 1,
  48                         .ops = &clk_alpha_pll_fabia_ops,
  49                 },
  50         },
  51 };
  52
  53 static const struct parent_map gpu_cc_parent_map_0[] = {
  54         { P_BI_TCXO, 0 },
  55         { P_GPU_CC_PLL1_OUT_MAIN, 3 },
  56         { P_GPLL0_OUT_MAIN, 5 },
  57         { P_GPLL0_OUT_MAIN_DIV, 6 },
  58 };
  59
  60 static const struct clk_parent_data gpu_cc_parent_data_0[] = {
  61         { .fw_name = "bi_tcxo" },
  62         { .hw = &gpu_cc_pll1.clkr.hw },
  63         { .fw_name = "gcc_gpu_gpll0_clk_src" },
  64         { .fw_name = "gcc_gpu_gpll0_div_clk_src" },
  65 };
  66
  67 static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
  68         F(19200000, P_BI_TCXO, 1, 0, 0),
  69         F(200000000, P_GPLL0_OUT_MAIN_DIV, 1.5, 0, 0),
  70         { }
  71 };
  72
  73 static struct clk_rcg2 gpu_cc_gmu_clk_src = {
  74         .cmd_rcgr = 0x1120,
  75         .mnd_width = 0,
  76         .hid_width = 5,
  77         .parent_map = gpu_cc_parent_map_0,
  78         .freq_tbl = ftbl_gpu_cc_gmu_clk_src,
  79         .clkr.hw.init = &(struct clk_init_data){
  80                 .name = "gpu_cc_gmu_clk_src",
  81                 .parent_data = gpu_cc_parent_data_0,
  82                 .num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
  83                 .flags = CLK_SET_RATE_PARENT,
  84                 .ops = &clk_rcg2_shared_ops,
  85         },
  86 };
  87
  88 static struct clk_branch gpu_cc_crc_ahb_clk = {
  89         .halt_reg = 0x107c,
  90         .halt_check = BRANCH_HALT_DELAY,
  91         .clkr = {
  92                 .enable_reg = 0x107c,
  93                 .enable_mask = BIT(0),
  94                 .hw.init = &(struct clk_init_data){
  95                         .name = "gpu_cc_crc_ahb_clk",
  96                         .ops = &clk_branch2_ops,
  97                 },
  98         },
  99 };
 100
 101 static struct clk_branch gpu_cc_cx_gmu_clk = {
 102         .halt_reg = 0x1098,
 103         .halt_check = BRANCH_HALT,
 104         .clkr = {
 105                 .enable_reg = 0x1098,
 106                 .enable_mask = BIT(0),
 107                 .hw.init = &(struct clk_init_data){
 108                         .name = "gpu_cc_cx_gmu_clk",
 109                         .parent_hws = (const struct clk_hw*[]) {
 110                                 &gpu_cc_gmu_clk_src.clkr.hw,
 111                         },
 112                         .num_parents = 1,
 113                         .flags = CLK_SET_RATE_PARENT,
 114                         .ops = &clk_branch2_ops,
 115                 },
 116         },
 117 };
 118
 119 static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
 120         .halt_reg = 0x108c,
 121         .halt_check = BRANCH_HALT_DELAY,
 122         .clkr = {
 123                 .enable_reg = 0x108c,
 124                 .enable_mask = BIT(0),
 125                 .hw.init = &(struct clk_init_data){
 126                         .name = "gpu_cc_cx_snoc_dvm_clk",
 127                         .ops = &clk_branch2_ops,
 128                 },
 129         },
 130 };
 131
 132 static struct clk_branch gpu_cc_cxo_aon_clk = {
 133         .halt_reg = 0x1004,
 134         .halt_check = BRANCH_HALT_DELAY,
 135         .clkr = {
 136                 .enable_reg = 0x1004,
 137                 .enable_mask = BIT(0),
 138                 .hw.init = &(struct clk_init_data){
 139                         .name = "gpu_cc_cxo_aon_clk",
 140                         .ops = &clk_branch2_ops,
 141                 },
 142         },
 143 };
 144
 145 static struct clk_branch gpu_cc_cxo_clk = {
 146         .halt_reg = 0x109c,
 147         .halt_check = BRANCH_HALT,
 148         .clkr = {
 149                 .enable_reg = 0x109c,
 150                 .enable_mask = BIT(0),
 151                 .hw.init = &(struct clk_init_data){
 152                         .name = "gpu_cc_cxo_clk",
 153                         .ops = &clk_branch2_ops,
 154                 },
 155         },
 156 };
 157
 158 static struct gdsc cx_gdsc = {
 159         .gdscr = 0x106c,
 160         .gds_hw_ctrl = 0x1540,
 161         .clk_dis_wait_val = 8,
 162         .pd = {
 163                 .name = "cx_gdsc",
 164         },
 165         .pwrsts = PWRSTS_OFF_ON,
 166         .flags = VOTABLE,
 167 };
 168
 169 static struct gdsc gx_gdsc = {
 170         .gdscr = 0x100c,
 171         .clamp_io_ctrl = 0x1508,
 172         .pd = {
 173                 .name = "gx_gdsc",
 174                 .power_on = gdsc_gx_do_nothing_enable,
 175         },
 176         .pwrsts = PWRSTS_OFF_ON,
 177         .flags = CLAMP_IO,
 178 };
 179
 180 static struct gdsc *gpu_cc_sc7180_gdscs[] = {
 181         [CX_GDSC] = &cx_gdsc,
 182         [GX_GDSC] = &gx_gdsc,
 183 };
 184
 185 static struct clk_regmap *gpu_cc_sc7180_clocks[] = {
 186         [GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
 187         [GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
 188         [GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
 189         [GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
 190         [GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
 191         [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
 192         [GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
 193 };
 194
 195 static const struct regmap_config gpu_cc_sc7180_regmap_config = {
 196         .reg_bits =     32,
 197         .reg_stride =   4,
 198         .val_bits =     32,
 199         .max_register = 0x8008,
 200         .fast_io =      true,
 201 };
 202
 203 static const struct qcom_cc_desc gpu_cc_sc7180_desc = {
 204         .config = &gpu_cc_sc7180_regmap_config,
 205         .clks = gpu_cc_sc7180_clocks,
 206         .num_clks = ARRAY_SIZE(gpu_cc_sc7180_clocks),
 207         .gdscs = gpu_cc_sc7180_gdscs,
 208         .num_gdscs = ARRAY_SIZE(gpu_cc_sc7180_gdscs),
 209 };
 210
 211 static const struct of_device_id gpu_cc_sc7180_match_table[] = {
 212         { .compatible = "qcom,sc7180-gpucc" },
 213         { }
 214 };
 215 MODULE_DEVICE_TABLE(of, gpu_cc_sc7180_match_table);
 216
 217 static int gpu_cc_sc7180_probe(struct platform_device *pdev)
 218 {
 219         struct regmap *regmap;
 220         struct alpha_pll_config gpu_cc_pll_config = {};
 221         unsigned int value, mask;
 222
 223         regmap = qcom_cc_map(pdev, &gpu_cc_sc7180_desc);
 224         if (IS_ERR(regmap))
 225                 return PTR_ERR(regmap);
 226
 227         /* 360MHz Configuration */
 228         gpu_cc_pll_config.l = 0x12;
 229         gpu_cc_pll_config.alpha = 0xc000;
 230         gpu_cc_pll_config.config_ctl_val = 0x20485699;
 231         gpu_cc_pll_config.config_ctl_hi_val = 0x00002067;
 232         gpu_cc_pll_config.user_ctl_val = 0x00000001;
 233         gpu_cc_pll_config.user_ctl_hi_val = 0x00004805;
 234         gpu_cc_pll_config.test_ctl_hi_val = 0x40000000;
 235
 236         clk_fabia_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll_config);
 237
 238         /* Recommended WAKEUP/SLEEP settings for the gpu_cc_cx_gmu_clk */
 239         mask = CX_GMU_CBCR_WAKE_MASK << CX_GMU_CBCR_WAKE_SHIFT;
 240         mask |= CX_GMU_CBCR_SLEEP_MASK << CX_GMU_CBCR_SLEEP_SHIFT;
 241         value = 0xF << CX_GMU_CBCR_WAKE_SHIFT | 0xF << CX_GMU_CBCR_SLEEP_SHIFT;
 242         regmap_update_bits(regmap, 0x1098, mask, value);
 243
 244         return qcom_cc_really_probe(pdev, &gpu_cc_sc7180_desc, regmap);
 245 }
 246
 247 static struct platform_driver gpu_cc_sc7180_driver = {
 248         .probe = gpu_cc_sc7180_probe,
 249         .driver = {
 250                 .name = "sc7180-gpucc",
 251                 .of_match_table = gpu_cc_sc7180_match_table,
 252         },
 253 };
 254
 255 static int __init gpu_cc_sc7180_init(void)
 256 {
 257         return platform_driver_register(&gpu_cc_sc7180_driver);
 258 }
 259 subsys_initcall(gpu_cc_sc7180_init);
 260
 261 static void __exit gpu_cc_sc7180_exit(void)
 262 {
 263         platform_driver_unregister(&gpu_cc_sc7180_driver);
 264 }
 265 module_exit(gpu_cc_sc7180_exit);
 266
 267 MODULE_DESCRIPTION("QTI GPU_CC SC7180 Driver");
 268 MODULE_LICENSE("GPL v2");