drivers/clk/qcom/videocc-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,videocc-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 enum {
  21         P_BI_TCXO,
  22         P_CHIP_SLEEP_CLK,
  23         P_CORE_BI_PLL_TEST_SE,
  24         P_VIDEO_PLL0_OUT_EVEN,
  25         P_VIDEO_PLL0_OUT_MAIN,
  26         P_VIDEO_PLL0_OUT_ODD,
  27 };
  28
  29 static const struct pll_vco fabia_vco[] = {
  30         { 249600000, 2000000000, 0 },
  31 };
  32
  33 static struct clk_alpha_pll video_pll0 = {
  34         .offset = 0x42c,
  35         .vco_table = fabia_vco,
  36         .num_vco = ARRAY_SIZE(fabia_vco),
  37         .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
  38         .clkr = {
  39                 .hw.init = &(struct clk_init_data){
  40                         .name = "video_pll0",
  41                         .parent_data = &(const struct clk_parent_data){
  42                                 .fw_name = "bi_tcxo",
  43                         },
  44                         .num_parents = 1,
  45                         .ops = &clk_alpha_pll_fabia_ops,
  46                 },
  47         },
  48 };
  49
  50 static const struct parent_map video_cc_parent_map_1[] = {
  51         { P_BI_TCXO, 0 },
  52         { P_VIDEO_PLL0_OUT_MAIN, 1 },
  53 };
  54
  55 static const struct clk_parent_data video_cc_parent_data_1[] = {
  56         { .fw_name = "bi_tcxo" },
  57         { .hw = &video_pll0.clkr.hw },
  58 };
  59
  60 static const struct freq_tbl ftbl_video_cc_venus_clk_src[] = {
  61         F(19200000, P_BI_TCXO, 1, 0, 0),
  62         F(150000000, P_VIDEO_PLL0_OUT_MAIN, 4, 0, 0),
  63         F(270000000, P_VIDEO_PLL0_OUT_MAIN, 2.5, 0, 0),
  64         F(340000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
  65         F(434000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
  66         F(500000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
  67         { }
  68 };
  69
  70 static struct clk_rcg2 video_cc_venus_clk_src = {
  71         .cmd_rcgr = 0x7f0,
  72         .mnd_width = 0,
  73         .hid_width = 5,
  74         .parent_map = video_cc_parent_map_1,
  75         .freq_tbl = ftbl_video_cc_venus_clk_src,
  76         .clkr.hw.init = &(struct clk_init_data){
  77                 .name = "video_cc_venus_clk_src",
  78                 .parent_data = video_cc_parent_data_1,
  79                 .num_parents = ARRAY_SIZE(video_cc_parent_data_1),
  80                 .flags = CLK_SET_RATE_PARENT,
  81                 .ops = &clk_rcg2_shared_ops,
  82         },
  83 };
  84
  85 static struct clk_branch video_cc_vcodec0_axi_clk = {
  86         .halt_reg = 0x9ec,
  87         .halt_check = BRANCH_HALT,
  88         .clkr = {
  89                 .enable_reg = 0x9ec,
  90                 .enable_mask = BIT(0),
  91                 .hw.init = &(struct clk_init_data){
  92                         .name = "video_cc_vcodec0_axi_clk",
  93                         .ops = &clk_branch2_ops,
  94                 },
  95         },
  96 };
  97
  98 static struct clk_branch video_cc_vcodec0_core_clk = {
  99         .halt_reg = 0x890,
 100         .halt_check = BRANCH_HALT_VOTED,
 101         .clkr = {
 102                 .enable_reg = 0x890,
 103                 .enable_mask = BIT(0),
 104                 .hw.init = &(struct clk_init_data){
 105                         .name = "video_cc_vcodec0_core_clk",
 106                         .parent_data = &(const struct clk_parent_data){
 107                                 .hw = &video_cc_venus_clk_src.clkr.hw,
 108                         },
 109                         .num_parents = 1,
 110                         .flags = CLK_SET_RATE_PARENT,
 111                         .ops = &clk_branch2_ops,
 112                 },
 113         },
 114 };
 115
 116 static struct clk_branch video_cc_venus_ahb_clk = {
 117         .halt_reg = 0xa4c,
 118         .halt_check = BRANCH_HALT,
 119         .clkr = {
 120                 .enable_reg = 0xa4c,
 121                 .enable_mask = BIT(0),
 122                 .hw.init = &(struct clk_init_data){
 123                         .name = "video_cc_venus_ahb_clk",
 124                         .ops = &clk_branch2_ops,
 125                 },
 126         },
 127 };
 128
 129 static struct clk_branch video_cc_venus_ctl_axi_clk = {
 130         .halt_reg = 0x9cc,
 131         .halt_check = BRANCH_HALT,
 132         .clkr = {
 133                 .enable_reg = 0x9cc,
 134                 .enable_mask = BIT(0),
 135                 .hw.init = &(struct clk_init_data){
 136                         .name = "video_cc_venus_ctl_axi_clk",
 137                         .ops = &clk_branch2_ops,
 138                 },
 139         },
 140 };
 141
 142 static struct clk_branch video_cc_venus_ctl_core_clk = {
 143         .halt_reg = 0x850,
 144         .halt_check = BRANCH_HALT,
 145         .clkr = {
 146                 .enable_reg = 0x850,
 147                 .enable_mask = BIT(0),
 148                 .hw.init = &(struct clk_init_data){
 149                         .name = "video_cc_venus_ctl_core_clk",
 150                         .parent_data = &(const struct clk_parent_data){
 151                                 .hw = &video_cc_venus_clk_src.clkr.hw,
 152                         },
 153                         .num_parents = 1,
 154                         .flags = CLK_SET_RATE_PARENT,
 155                         .ops = &clk_branch2_ops,
 156                 },
 157         },
 158 };
 159
 160 static struct gdsc venus_gdsc = {
 161         .gdscr = 0x814,
 162         .pd = {
 163                 .name = "venus_gdsc",
 164         },
 165         .pwrsts = PWRSTS_OFF_ON,
 166 };
 167
 168 static struct gdsc vcodec0_gdsc = {
 169         .gdscr = 0x874,
 170         .pd = {
 171                 .name = "vcodec0_gdsc",
 172         },
 173         .flags = HW_CTRL,
 174         .pwrsts = PWRSTS_OFF_ON,
 175 };
 176
 177 static struct clk_regmap *video_cc_sc7180_clocks[] = {
 178         [VIDEO_CC_VCODEC0_AXI_CLK] = &video_cc_vcodec0_axi_clk.clkr,
 179         [VIDEO_CC_VCODEC0_CORE_CLK] = &video_cc_vcodec0_core_clk.clkr,
 180         [VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
 181         [VIDEO_CC_VENUS_CLK_SRC] = &video_cc_venus_clk_src.clkr,
 182         [VIDEO_CC_VENUS_CTL_AXI_CLK] = &video_cc_venus_ctl_axi_clk.clkr,
 183         [VIDEO_CC_VENUS_CTL_CORE_CLK] = &video_cc_venus_ctl_core_clk.clkr,
 184         [VIDEO_PLL0] = &video_pll0.clkr,
 185 };
 186
 187 static struct gdsc *video_cc_sc7180_gdscs[] = {
 188         [VENUS_GDSC] = &venus_gdsc,
 189         [VCODEC0_GDSC] = &vcodec0_gdsc,
 190 };
 191
 192 static const struct regmap_config video_cc_sc7180_regmap_config = {
 193         .reg_bits = 32,
 194         .reg_stride = 4,
 195         .val_bits = 32,
 196         .max_register = 0xb94,
 197         .fast_io = true,
 198 };
 199
 200 static const struct qcom_cc_desc video_cc_sc7180_desc = {
 201         .config = &video_cc_sc7180_regmap_config,
 202         .clks = video_cc_sc7180_clocks,
 203         .num_clks = ARRAY_SIZE(video_cc_sc7180_clocks),
 204         .gdscs = video_cc_sc7180_gdscs,
 205         .num_gdscs = ARRAY_SIZE(video_cc_sc7180_gdscs),
 206 };
 207
 208 static const struct of_device_id video_cc_sc7180_match_table[] = {
 209         { .compatible = "qcom,sc7180-videocc" },
 210         { }
 211 };
 212 MODULE_DEVICE_TABLE(of, video_cc_sc7180_match_table);
 213
 214 static int video_cc_sc7180_probe(struct platform_device *pdev)
 215 {
 216         struct regmap *regmap;
 217         struct alpha_pll_config video_pll0_config = {};
 218
 219         regmap = qcom_cc_map(pdev, &video_cc_sc7180_desc);
 220         if (IS_ERR(regmap))
 221                 return PTR_ERR(regmap);
 222
 223         video_pll0_config.l = 0x1f;
 224         video_pll0_config.alpha = 0x4000;
 225         video_pll0_config.user_ctl_val = 0x00000001;
 226         video_pll0_config.user_ctl_hi_val = 0x00004805;
 227
 228         clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);
 229
 230         /* Keep VIDEO_CC_XO_CLK ALWAYS-ON */
 231         regmap_update_bits(regmap, 0x984, 0x1, 0x1);
 232
 233         return qcom_cc_really_probe(pdev, &video_cc_sc7180_desc, regmap);
 234 }
 235
 236 static struct platform_driver video_cc_sc7180_driver = {
 237         .probe = video_cc_sc7180_probe,
 238         .driver = {
 239                 .name = "sc7180-videocc",
 240                 .of_match_table = video_cc_sc7180_match_table,
 241         },
 242 };
 243
 244 static int __init video_cc_sc7180_init(void)
 245 {
 246         return platform_driver_register(&video_cc_sc7180_driver);
 247 }
 248 subsys_initcall(video_cc_sc7180_init);
 249
 250 static void __exit video_cc_sc7180_exit(void)
 251 {
 252         platform_driver_unregister(&video_cc_sc7180_driver);
 253 }
 254 module_exit(video_cc_sc7180_exit);
 255
 256 MODULE_LICENSE("GPL v2");
 257 MODULE_DESCRIPTION("QTI VIDEOCC SC7180 Driver");