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

   1 /*
   2  * Copyright (c) 2016 Icenowy Zheng <icenowy@aosc.xyz>
   3  *
   4  * This software is licensed under the terms of the GNU General Public
   5  * License version 2, as published by the Free Software Foundation, and
   6  * may be copied, distributed, and modified under those terms.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <linux/clk-provider.h>
  15 #include <linux/of_address.h>
  16 #include <linux/platform_device.h>
  17
  18 #include "ccu_common.h"
  19 #include "ccu_reset.h"
  20
  21 #include "ccu_div.h"
  22 #include "ccu_gate.h"
  23 #include "ccu_mp.h"
  24 #include "ccu_nm.h"
  25
  26 #include "ccu-sun8i-r.h"
  27
  28 static const char * const ar100_parents[] = { "osc32k", "osc24M",
  29                                              "pll-periph0", "iosc" };
  30 static const char * const a83t_ar100_parents[] = { "osc16M-d512", "osc24M",
  31                                                    "pll-periph0", "iosc" };
  32 static const struct ccu_mux_var_prediv ar100_predivs[] = {
  33         { .index = 2, .shift = 8, .width = 5 },
  34 };
  35
  36 static struct ccu_div ar100_clk = {
  37         .div            = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO),
  38
  39         .mux            = {
  40                 .shift  = 16,
  41                 .width  = 2,
  42
  43                 .var_predivs    = ar100_predivs,
  44                 .n_var_predivs  = ARRAY_SIZE(ar100_predivs),
  45         },
  46
  47         .common         = {
  48                 .reg            = 0x00,
  49                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
  50                 .hw.init        = CLK_HW_INIT_PARENTS("ar100",
  51                                                       ar100_parents,
  52                                                       &ccu_div_ops,
  53                                                       0),
  54         },
  55 };
  56
  57 static struct ccu_div a83t_ar100_clk = {
  58         .div            = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO),
  59
  60         .mux            = {
  61                 .shift  = 16,
  62                 .width  = 2,
  63
  64                 .var_predivs    = ar100_predivs,
  65                 .n_var_predivs  = ARRAY_SIZE(ar100_predivs),
  66         },
  67
  68         .common         = {
  69                 .reg            = 0x00,
  70                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
  71                 .hw.init        = CLK_HW_INIT_PARENTS("ar100",
  72                                                       a83t_ar100_parents,
  73                                                       &ccu_div_ops,
  74                                                       0),
  75         },
  76 };
  77
  78 static CLK_FIXED_FACTOR(ahb0_clk, "ahb0", "ar100", 1, 1, 0);
  79
  80 static struct ccu_div apb0_clk = {
  81         .div            = _SUNXI_CCU_DIV_FLAGS(0, 2, CLK_DIVIDER_POWER_OF_TWO),
  82
  83         .common         = {
  84                 .reg            = 0x0c,
  85                 .hw.init        = CLK_HW_INIT("apb0",
  86                                               "ahb0",
  87                                               &ccu_div_ops,
  88                                               0),
  89         },
  90 };
  91
  92 static SUNXI_CCU_M(a83t_apb0_clk, "apb0", "ahb0", 0x0c, 0, 2, 0);
  93
  94 static SUNXI_CCU_GATE(apb0_pio_clk,     "apb0-pio",     "apb0",
  95                       0x28, BIT(0), 0);
  96 static SUNXI_CCU_GATE(apb0_ir_clk,      "apb0-ir",      "apb0",
  97                       0x28, BIT(1), 0);
  98 static SUNXI_CCU_GATE(apb0_timer_clk,   "apb0-timer",   "apb0",
  99                       0x28, BIT(2), 0);
 100 static SUNXI_CCU_GATE(apb0_rsb_clk,     "apb0-rsb",     "apb0",
 101                       0x28, BIT(3), 0);
 102 static SUNXI_CCU_GATE(apb0_uart_clk,    "apb0-uart",    "apb0",
 103                       0x28, BIT(4), 0);
 104 static SUNXI_CCU_GATE(apb0_i2c_clk,     "apb0-i2c",     "apb0",
 105                       0x28, BIT(6), 0);
 106 static SUNXI_CCU_GATE(apb0_twd_clk,     "apb0-twd",     "apb0",
 107                       0x28, BIT(7), 0);
 108
 109 static const char * const r_mod0_default_parents[] = { "osc32k", "osc24M" };
 110 static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir",
 111                                   r_mod0_default_parents, 0x54,
 112                                   0, 4,         /* M */
 113                                   16, 2,        /* P */
 114                                   24, 2,        /* mux */
 115                                   BIT(31),      /* gate */
 116                                   0);
 117
 118 static const char *const a83t_r_mod0_parents[] = { "osc16M", "osc24M" };
 119 static const struct ccu_mux_fixed_prediv a83t_ir_predivs[] = {
 120         { .index = 0, .div = 16 },
 121 };
 122 static struct ccu_mp a83t_ir_clk = {
 123         .enable = BIT(31),
 124
 125         .m      = _SUNXI_CCU_DIV(0, 4),
 126         .p      = _SUNXI_CCU_DIV(16, 2),
 127
 128         .mux    = {
 129                 .shift  = 24,
 130                 .width  = 2,
 131                 .fixed_predivs  = a83t_ir_predivs,
 132                 .n_predivs      = ARRAY_SIZE(a83t_ir_predivs),
 133         },
 134
 135         .common         = {
 136                 .reg            = 0x54,
 137                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
 138                 .hw.init        = CLK_HW_INIT_PARENTS("ir",
 139                                                       a83t_r_mod0_parents,
 140                                                       &ccu_mp_ops,
 141                                                       0),
 142         },
 143 };
 144
 145 static struct ccu_common *sun8i_a83t_r_ccu_clks[] = {
 146         &a83t_ar100_clk.common,
 147         &a83t_apb0_clk.common,
 148         &apb0_pio_clk.common,
 149         &apb0_ir_clk.common,
 150         &apb0_timer_clk.common,
 151         &apb0_rsb_clk.common,
 152         &apb0_uart_clk.common,
 153         &apb0_i2c_clk.common,
 154         &apb0_twd_clk.common,
 155         &a83t_ir_clk.common,
 156 };
 157
 158 static struct ccu_common *sun8i_h3_r_ccu_clks[] = {
 159         &ar100_clk.common,
 160         &apb0_clk.common,
 161         &apb0_pio_clk.common,
 162         &apb0_ir_clk.common,
 163         &apb0_timer_clk.common,
 164         &apb0_uart_clk.common,
 165         &apb0_i2c_clk.common,
 166         &apb0_twd_clk.common,
 167         &ir_clk.common,
 168 };
 169
 170 static struct ccu_common *sun50i_a64_r_ccu_clks[] = {
 171         &ar100_clk.common,
 172         &apb0_clk.common,
 173         &apb0_pio_clk.common,
 174         &apb0_ir_clk.common,
 175         &apb0_timer_clk.common,
 176         &apb0_rsb_clk.common,
 177         &apb0_uart_clk.common,
 178         &apb0_i2c_clk.common,
 179         &apb0_twd_clk.common,
 180         &ir_clk.common,
 181 };
 182
 183 static struct clk_hw_onecell_data sun8i_a83t_r_hw_clks = {
 184         .hws    = {
 185                 [CLK_AR100]             = &a83t_ar100_clk.common.hw,
 186                 [CLK_AHB0]              = &ahb0_clk.hw,
 187                 [CLK_APB0]              = &a83t_apb0_clk.common.hw,
 188                 [CLK_APB0_PIO]          = &apb0_pio_clk.common.hw,
 189                 [CLK_APB0_IR]           = &apb0_ir_clk.common.hw,
 190                 [CLK_APB0_TIMER]        = &apb0_timer_clk.common.hw,
 191                 [CLK_APB0_RSB]          = &apb0_rsb_clk.common.hw,
 192                 [CLK_APB0_UART]         = &apb0_uart_clk.common.hw,
 193                 [CLK_APB0_I2C]          = &apb0_i2c_clk.common.hw,
 194                 [CLK_APB0_TWD]          = &apb0_twd_clk.common.hw,
 195                 [CLK_IR]                = &a83t_ir_clk.common.hw,
 196         },
 197         .num    = CLK_NUMBER,
 198 };
 199
 200 static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = {
 201         .hws    = {
 202                 [CLK_AR100]             = &ar100_clk.common.hw,
 203                 [CLK_AHB0]              = &ahb0_clk.hw,
 204                 [CLK_APB0]              = &apb0_clk.common.hw,
 205                 [CLK_APB0_PIO]          = &apb0_pio_clk.common.hw,
 206                 [CLK_APB0_IR]           = &apb0_ir_clk.common.hw,
 207                 [CLK_APB0_TIMER]        = &apb0_timer_clk.common.hw,
 208                 [CLK_APB0_UART]         = &apb0_uart_clk.common.hw,
 209                 [CLK_APB0_I2C]          = &apb0_i2c_clk.common.hw,
 210                 [CLK_APB0_TWD]          = &apb0_twd_clk.common.hw,
 211                 [CLK_IR]                = &ir_clk.common.hw,
 212         },
 213         .num    = CLK_NUMBER,
 214 };
 215
 216 static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = {
 217         .hws    = {
 218                 [CLK_AR100]             = &ar100_clk.common.hw,
 219                 [CLK_AHB0]              = &ahb0_clk.hw,
 220                 [CLK_APB0]              = &apb0_clk.common.hw,
 221                 [CLK_APB0_PIO]          = &apb0_pio_clk.common.hw,
 222                 [CLK_APB0_IR]           = &apb0_ir_clk.common.hw,
 223                 [CLK_APB0_TIMER]        = &apb0_timer_clk.common.hw,
 224                 [CLK_APB0_RSB]          = &apb0_rsb_clk.common.hw,
 225                 [CLK_APB0_UART]         = &apb0_uart_clk.common.hw,
 226                 [CLK_APB0_I2C]          = &apb0_i2c_clk.common.hw,
 227                 [CLK_APB0_TWD]          = &apb0_twd_clk.common.hw,
 228                 [CLK_IR]                = &ir_clk.common.hw,
 229         },
 230         .num    = CLK_NUMBER,
 231 };
 232
 233 static struct ccu_reset_map sun8i_a83t_r_ccu_resets[] = {
 234         [RST_APB0_IR]           =  { 0xb0, BIT(1) },
 235         [RST_APB0_TIMER]        =  { 0xb0, BIT(2) },
 236         [RST_APB0_RSB]          =  { 0xb0, BIT(3) },
 237         [RST_APB0_UART]         =  { 0xb0, BIT(4) },
 238         [RST_APB0_I2C]          =  { 0xb0, BIT(6) },
 239 };
 240
 241 static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = {
 242         [RST_APB0_IR]           =  { 0xb0, BIT(1) },
 243         [RST_APB0_TIMER]        =  { 0xb0, BIT(2) },
 244         [RST_APB0_UART]         =  { 0xb0, BIT(4) },
 245         [RST_APB0_I2C]          =  { 0xb0, BIT(6) },
 246 };
 247
 248 static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = {
 249         [RST_APB0_IR]           =  { 0xb0, BIT(1) },
 250         [RST_APB0_TIMER]        =  { 0xb0, BIT(2) },
 251         [RST_APB0_RSB]          =  { 0xb0, BIT(3) },
 252         [RST_APB0_UART]         =  { 0xb0, BIT(4) },
 253         [RST_APB0_I2C]          =  { 0xb0, BIT(6) },
 254 };
 255
 256 static const struct sunxi_ccu_desc sun8i_a83t_r_ccu_desc = {
 257         .ccu_clks       = sun8i_a83t_r_ccu_clks,
 258         .num_ccu_clks   = ARRAY_SIZE(sun8i_a83t_r_ccu_clks),
 259
 260         .hw_clks        = &sun8i_a83t_r_hw_clks,
 261
 262         .resets         = sun8i_a83t_r_ccu_resets,
 263         .num_resets     = ARRAY_SIZE(sun8i_a83t_r_ccu_resets),
 264 };
 265
 266 static const struct sunxi_ccu_desc sun8i_h3_r_ccu_desc = {
 267         .ccu_clks       = sun8i_h3_r_ccu_clks,
 268         .num_ccu_clks   = ARRAY_SIZE(sun8i_h3_r_ccu_clks),
 269
 270         .hw_clks        = &sun8i_h3_r_hw_clks,
 271
 272         .resets         = sun8i_h3_r_ccu_resets,
 273         .num_resets     = ARRAY_SIZE(sun8i_h3_r_ccu_resets),
 274 };
 275
 276 static const struct sunxi_ccu_desc sun50i_a64_r_ccu_desc = {
 277         .ccu_clks       = sun50i_a64_r_ccu_clks,
 278         .num_ccu_clks   = ARRAY_SIZE(sun50i_a64_r_ccu_clks),
 279
 280         .hw_clks        = &sun50i_a64_r_hw_clks,
 281
 282         .resets         = sun50i_a64_r_ccu_resets,
 283         .num_resets     = ARRAY_SIZE(sun50i_a64_r_ccu_resets),
 284 };
 285
 286 static void __init sunxi_r_ccu_init(struct device_node *node,
 287                                     const struct sunxi_ccu_desc *desc)
 288 {
 289         void __iomem *reg;
 290
 291         reg = of_io_request_and_map(node, 0, of_node_full_name(node));
 292         if (IS_ERR(reg)) {
 293                 pr_err("%pOF: Could not map the clock registers\n", node);
 294                 return;
 295         }
 296
 297         sunxi_ccu_probe(node, reg, desc);
 298 }
 299
 300 static void __init sun8i_a83t_r_ccu_setup(struct device_node *node)
 301 {
 302         sunxi_r_ccu_init(node, &sun8i_a83t_r_ccu_desc);
 303 }
 304 CLK_OF_DECLARE(sun8i_a83t_r_ccu, "allwinner,sun8i-a83t-r-ccu",
 305                sun8i_a83t_r_ccu_setup);
 306
 307 static void __init sun8i_h3_r_ccu_setup(struct device_node *node)
 308 {
 309         sunxi_r_ccu_init(node, &sun8i_h3_r_ccu_desc);
 310 }
 311 CLK_OF_DECLARE(sun8i_h3_r_ccu, "allwinner,sun8i-h3-r-ccu",
 312                sun8i_h3_r_ccu_setup);
 313
 314 static void __init sun50i_a64_r_ccu_setup(struct device_node *node)
 315 {
 316         sunxi_r_ccu_init(node, &sun50i_a64_r_ccu_desc);
 317 }
 318 CLK_OF_DECLARE(sun50i_a64_r_ccu, "allwinner,sun50i-a64-r-ccu",
 319                sun50i_a64_r_ccu_setup);