drivers/clk/sunxi-ng/ccu-sun8i-de2.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.io>
   4  */
   5
   6 #include <linux/clk.h>
   7 #include <linux/clk-provider.h>
   8 #include <linux/of_address.h>
   9 #include <linux/of_platform.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/reset.h>
  12
  13 #include "ccu_common.h"
  14 #include "ccu_div.h"
  15 #include "ccu_gate.h"
  16 #include "ccu_reset.h"
  17
  18 #include "ccu-sun8i-de2.h"
  19
  20 static SUNXI_CCU_GATE(bus_mixer0_clk,   "bus-mixer0",   "bus-de",
  21                       0x04, BIT(0), 0);
  22 static SUNXI_CCU_GATE(bus_mixer1_clk,   "bus-mixer1",   "bus-de",
  23                       0x04, BIT(1), 0);
  24 static SUNXI_CCU_GATE(bus_wb_clk,       "bus-wb",       "bus-de",
  25                       0x04, BIT(2), 0);
  26 static SUNXI_CCU_GATE(bus_rot_clk,      "bus-rot",      "bus-de",
  27                       0x04, BIT(3), 0);
  28
  29 static SUNXI_CCU_GATE(mixer0_clk,       "mixer0",       "mixer0-div",
  30                       0x00, BIT(0), CLK_SET_RATE_PARENT);
  31 static SUNXI_CCU_GATE(mixer1_clk,       "mixer1",       "mixer1-div",
  32                       0x00, BIT(1), CLK_SET_RATE_PARENT);
  33 static SUNXI_CCU_GATE(wb_clk,           "wb",           "wb-div",
  34                       0x00, BIT(2), CLK_SET_RATE_PARENT);
  35 static SUNXI_CCU_GATE(rot_clk,          "rot",          "rot-div",
  36                       0x00, BIT(3), CLK_SET_RATE_PARENT);
  37
  38 static SUNXI_CCU_M(mixer0_div_clk, "mixer0-div", "de", 0x0c, 0, 4,
  39                    CLK_SET_RATE_PARENT);
  40 static SUNXI_CCU_M(mixer1_div_clk, "mixer1-div", "de", 0x0c, 4, 4,
  41                    CLK_SET_RATE_PARENT);
  42 static SUNXI_CCU_M(wb_div_clk, "wb-div", "de", 0x0c, 8, 4,
  43                    CLK_SET_RATE_PARENT);
  44 static SUNXI_CCU_M(rot_div_clk, "rot-div", "de", 0x0c, 0x0c, 4,
  45                    CLK_SET_RATE_PARENT);
  46
  47 static SUNXI_CCU_M(mixer0_div_a83_clk, "mixer0-div", "pll-de", 0x0c, 0, 4,
  48                    CLK_SET_RATE_PARENT);
  49 static SUNXI_CCU_M(mixer1_div_a83_clk, "mixer1-div", "pll-de", 0x0c, 4, 4,
  50                    CLK_SET_RATE_PARENT);
  51 static SUNXI_CCU_M(wb_div_a83_clk, "wb-div", "pll-de", 0x0c, 8, 4,
  52                    CLK_SET_RATE_PARENT);
  53
  54 static struct ccu_common *sun50i_h6_de3_clks[] = {
  55         &mixer0_clk.common,
  56         &mixer1_clk.common,
  57         &wb_clk.common,
  58
  59         &bus_mixer0_clk.common,
  60         &bus_mixer1_clk.common,
  61         &bus_wb_clk.common,
  62
  63         &mixer0_div_clk.common,
  64         &mixer1_div_clk.common,
  65         &wb_div_clk.common,
  66
  67         &bus_rot_clk.common,
  68         &rot_clk.common,
  69         &rot_div_clk.common,
  70 };
  71
  72 static struct ccu_common *sun8i_a83t_de2_clks[] = {
  73         &mixer0_clk.common,
  74         &mixer1_clk.common,
  75         &wb_clk.common,
  76
  77         &bus_mixer0_clk.common,
  78         &bus_mixer1_clk.common,
  79         &bus_wb_clk.common,
  80
  81         &mixer0_div_a83_clk.common,
  82         &mixer1_div_a83_clk.common,
  83         &wb_div_a83_clk.common,
  84 };
  85
  86 static struct ccu_common *sun8i_h3_de2_clks[] = {
  87         &mixer0_clk.common,
  88         &mixer1_clk.common,
  89         &wb_clk.common,
  90
  91         &bus_mixer0_clk.common,
  92         &bus_mixer1_clk.common,
  93         &bus_wb_clk.common,
  94
  95         &mixer0_div_clk.common,
  96         &mixer1_div_clk.common,
  97         &wb_div_clk.common,
  98 };
  99
 100 static struct ccu_common *sun8i_v3s_de2_clks[] = {
 101         &mixer0_clk.common,
 102         &wb_clk.common,
 103
 104         &bus_mixer0_clk.common,
 105         &bus_wb_clk.common,
 106
 107         &mixer0_div_clk.common,
 108         &wb_div_clk.common,
 109 };
 110
 111 static struct clk_hw_onecell_data sun8i_a83t_de2_hw_clks = {
 112         .hws    = {
 113                 [CLK_MIXER0]            = &mixer0_clk.common.hw,
 114                 [CLK_MIXER1]            = &mixer1_clk.common.hw,
 115                 [CLK_WB]                = &wb_clk.common.hw,
 116
 117                 [CLK_BUS_MIXER0]        = &bus_mixer0_clk.common.hw,
 118                 [CLK_BUS_MIXER1]        = &bus_mixer1_clk.common.hw,
 119                 [CLK_BUS_WB]            = &bus_wb_clk.common.hw,
 120
 121                 [CLK_MIXER0_DIV]        = &mixer0_div_a83_clk.common.hw,
 122                 [CLK_MIXER1_DIV]        = &mixer1_div_a83_clk.common.hw,
 123                 [CLK_WB_DIV]            = &wb_div_a83_clk.common.hw,
 124         },
 125         .num    = CLK_NUMBER_WITHOUT_ROT,
 126 };
 127
 128 static struct clk_hw_onecell_data sun8i_h3_de2_hw_clks = {
 129         .hws    = {
 130                 [CLK_MIXER0]            = &mixer0_clk.common.hw,
 131                 [CLK_MIXER1]            = &mixer1_clk.common.hw,
 132                 [CLK_WB]                = &wb_clk.common.hw,
 133
 134                 [CLK_BUS_MIXER0]        = &bus_mixer0_clk.common.hw,
 135                 [CLK_BUS_MIXER1]        = &bus_mixer1_clk.common.hw,
 136                 [CLK_BUS_WB]            = &bus_wb_clk.common.hw,
 137
 138                 [CLK_MIXER0_DIV]        = &mixer0_div_clk.common.hw,
 139                 [CLK_MIXER1_DIV]        = &mixer1_div_clk.common.hw,
 140                 [CLK_WB_DIV]            = &wb_div_clk.common.hw,
 141         },
 142         .num    = CLK_NUMBER_WITHOUT_ROT,
 143 };
 144
 145 static struct clk_hw_onecell_data sun8i_v3s_de2_hw_clks = {
 146         .hws    = {
 147                 [CLK_MIXER0]            = &mixer0_clk.common.hw,
 148                 [CLK_WB]                = &wb_clk.common.hw,
 149
 150                 [CLK_BUS_MIXER0]        = &bus_mixer0_clk.common.hw,
 151                 [CLK_BUS_WB]            = &bus_wb_clk.common.hw,
 152
 153                 [CLK_MIXER0_DIV]        = &mixer0_div_clk.common.hw,
 154                 [CLK_WB_DIV]            = &wb_div_clk.common.hw,
 155         },
 156         .num    = CLK_NUMBER_WITHOUT_ROT,
 157 };
 158
 159 static struct clk_hw_onecell_data sun50i_h6_de3_hw_clks = {
 160         .hws    = {
 161                 [CLK_MIXER0]            = &mixer0_clk.common.hw,
 162                 [CLK_MIXER1]            = &mixer1_clk.common.hw,
 163                 [CLK_WB]                = &wb_clk.common.hw,
 164                 [CLK_ROT]               = &rot_clk.common.hw,
 165
 166                 [CLK_BUS_MIXER0]        = &bus_mixer0_clk.common.hw,
 167                 [CLK_BUS_MIXER1]        = &bus_mixer1_clk.common.hw,
 168                 [CLK_BUS_WB]            = &bus_wb_clk.common.hw,
 169                 [CLK_BUS_ROT]           = &bus_rot_clk.common.hw,
 170
 171                 [CLK_MIXER0_DIV]        = &mixer0_div_clk.common.hw,
 172                 [CLK_MIXER1_DIV]        = &mixer1_div_clk.common.hw,
 173                 [CLK_WB_DIV]            = &wb_div_clk.common.hw,
 174                 [CLK_ROT_DIV]           = &rot_div_clk.common.hw,
 175         },
 176         .num    = CLK_NUMBER_WITH_ROT,
 177 };
 178
 179 static struct ccu_reset_map sun8i_a83t_de2_resets[] = {
 180         [RST_MIXER0]    = { 0x08, BIT(0) },
 181         /*
 182          * For A83T, H3 and R40, mixer1 reset line is shared with wb, so
 183          * only RST_WB is exported here.
 184          * For V3s there's just no mixer1, so it also shares this struct.
 185          */
 186         [RST_WB]        = { 0x08, BIT(2) },
 187 };
 188
 189 static struct ccu_reset_map sun50i_a64_de2_resets[] = {
 190         [RST_MIXER0]    = { 0x08, BIT(0) },
 191         [RST_MIXER1]    = { 0x08, BIT(1) },
 192         [RST_WB]        = { 0x08, BIT(2) },
 193 };
 194
 195 static struct ccu_reset_map sun50i_h6_de3_resets[] = {
 196         [RST_MIXER0]    = { 0x08, BIT(0) },
 197         [RST_MIXER1]    = { 0x08, BIT(1) },
 198         [RST_WB]        = { 0x08, BIT(2) },
 199         [RST_ROT]       = { 0x08, BIT(3) },
 200 };
 201
 202 static const struct sunxi_ccu_desc sun8i_a83t_de2_clk_desc = {
 203         .ccu_clks       = sun8i_a83t_de2_clks,
 204         .num_ccu_clks   = ARRAY_SIZE(sun8i_a83t_de2_clks),
 205
 206         .hw_clks        = &sun8i_a83t_de2_hw_clks,
 207
 208         .resets         = sun8i_a83t_de2_resets,
 209         .num_resets     = ARRAY_SIZE(sun8i_a83t_de2_resets),
 210 };
 211
 212 static const struct sunxi_ccu_desc sun8i_h3_de2_clk_desc = {
 213         .ccu_clks       = sun8i_h3_de2_clks,
 214         .num_ccu_clks   = ARRAY_SIZE(sun8i_h3_de2_clks),
 215
 216         .hw_clks        = &sun8i_h3_de2_hw_clks,
 217
 218         .resets         = sun8i_a83t_de2_resets,
 219         .num_resets     = ARRAY_SIZE(sun8i_a83t_de2_resets),
 220 };
 221
 222 static const struct sunxi_ccu_desc sun50i_a64_de2_clk_desc = {
 223         .ccu_clks       = sun8i_h3_de2_clks,
 224         .num_ccu_clks   = ARRAY_SIZE(sun8i_h3_de2_clks),
 225
 226         .hw_clks        = &sun8i_h3_de2_hw_clks,
 227
 228         .resets         = sun50i_a64_de2_resets,
 229         .num_resets     = ARRAY_SIZE(sun50i_a64_de2_resets),
 230 };
 231
 232 static const struct sunxi_ccu_desc sun50i_h6_de3_clk_desc = {
 233         .ccu_clks       = sun50i_h6_de3_clks,
 234         .num_ccu_clks   = ARRAY_SIZE(sun50i_h6_de3_clks),
 235
 236         .hw_clks        = &sun50i_h6_de3_hw_clks,
 237
 238         .resets         = sun50i_h6_de3_resets,
 239         .num_resets     = ARRAY_SIZE(sun50i_h6_de3_resets),
 240 };
 241
 242 static const struct sunxi_ccu_desc sun8i_v3s_de2_clk_desc = {
 243         .ccu_clks       = sun8i_v3s_de2_clks,
 244         .num_ccu_clks   = ARRAY_SIZE(sun8i_v3s_de2_clks),
 245
 246         .hw_clks        = &sun8i_v3s_de2_hw_clks,
 247
 248         .resets         = sun8i_a83t_de2_resets,
 249         .num_resets     = ARRAY_SIZE(sun8i_a83t_de2_resets),
 250 };
 251
 252 static int sunxi_de2_clk_probe(struct platform_device *pdev)
 253 {
 254         struct resource *res;
 255         struct clk *bus_clk, *mod_clk;
 256         struct reset_control *rstc;
 257         void __iomem *reg;
 258         const struct sunxi_ccu_desc *ccu_desc;
 259         int ret;
 260
 261         ccu_desc = of_device_get_match_data(&pdev->dev);
 262         if (!ccu_desc)
 263                 return -EINVAL;
 264
 265         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 266         reg = devm_ioremap_resource(&pdev->dev, res);
 267         if (IS_ERR(reg))
 268                 return PTR_ERR(reg);
 269
 270         bus_clk = devm_clk_get(&pdev->dev, "bus");
 271         if (IS_ERR(bus_clk)) {
 272                 ret = PTR_ERR(bus_clk);
 273                 if (ret != -EPROBE_DEFER)
 274                         dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret);
 275                 return ret;
 276         }
 277
 278         mod_clk = devm_clk_get(&pdev->dev, "mod");
 279         if (IS_ERR(mod_clk)) {
 280                 ret = PTR_ERR(mod_clk);
 281                 if (ret != -EPROBE_DEFER)
 282                         dev_err(&pdev->dev, "Couldn't get mod clk: %d\n", ret);
 283                 return ret;
 284         }
 285
 286         rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 287         if (IS_ERR(rstc)) {
 288                 ret = PTR_ERR(rstc);
 289                 if (ret != -EPROBE_DEFER)
 290                         dev_err(&pdev->dev,
 291                                 "Couldn't get reset control: %d\n", ret);
 292                 return ret;
 293         }
 294
 295         /* The clocks need to be enabled for us to access the registers */
 296         ret = clk_prepare_enable(bus_clk);
 297         if (ret) {
 298                 dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
 299                 return ret;
 300         }
 301
 302         ret = clk_prepare_enable(mod_clk);
 303         if (ret) {
 304                 dev_err(&pdev->dev, "Couldn't enable mod clk: %d\n", ret);
 305                 goto err_disable_bus_clk;
 306         }
 307
 308         /* The reset control needs to be asserted for the controls to work */
 309         ret = reset_control_deassert(rstc);
 310         if (ret) {
 311                 dev_err(&pdev->dev,
 312                         "Couldn't deassert reset control: %d\n", ret);
 313                 goto err_disable_mod_clk;
 314         }
 315
 316         ret = sunxi_ccu_probe(pdev->dev.of_node, reg, ccu_desc);
 317         if (ret)
 318                 goto err_assert_reset;
 319
 320         return 0;
 321
 322 err_assert_reset:
 323         reset_control_assert(rstc);
 324 err_disable_mod_clk:
 325         clk_disable_unprepare(mod_clk);
 326 err_disable_bus_clk:
 327         clk_disable_unprepare(bus_clk);
 328         return ret;
 329 }
 330
 331 static const struct of_device_id sunxi_de2_clk_ids[] = {
 332         {
 333                 .compatible = "allwinner,sun8i-a83t-de2-clk",
 334                 .data = &sun8i_a83t_de2_clk_desc,
 335         },
 336         {
 337                 .compatible = "allwinner,sun8i-h3-de2-clk",
 338                 .data = &sun8i_h3_de2_clk_desc,
 339         },
 340         {
 341                 .compatible = "allwinner,sun8i-v3s-de2-clk",
 342                 .data = &sun8i_v3s_de2_clk_desc,
 343         },
 344         {
 345                 .compatible = "allwinner,sun50i-a64-de2-clk",
 346                 .data = &sun50i_a64_de2_clk_desc,
 347         },
 348         {
 349                 .compatible = "allwinner,sun50i-h5-de2-clk",
 350                 .data = &sun50i_a64_de2_clk_desc,
 351         },
 352         {
 353                 .compatible = "allwinner,sun50i-h6-de3-clk",
 354                 .data = &sun50i_h6_de3_clk_desc,
 355         },
 356         { }
 357 };
 358
 359 static struct platform_driver sunxi_de2_clk_driver = {
 360         .probe  = sunxi_de2_clk_probe,
 361         .driver = {
 362                 .name   = "sunxi-de2-clks",
 363                 .of_match_table = sunxi_de2_clk_ids,
 364         },
 365 };
 366 builtin_platform_driver(sunxi_de2_clk_driver);