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kpacket_gen: use constants for cmdlength
[cor.git] / drivers / clk / clk-bm1880.c
blob4cd175afce9b108e36e8f6febc1fc0057edda21b
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Bitmain BM1880 SoC clock driver
4 *
5 * Copyright (c) 2019 Linaro Ltd.
6 * Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
7 */
8
9 #include <linux/clk-provider.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/of_address.h>
13 #include <linux/of_device.h>
14 #include <linux/platform_device.h>
15 #include <linux/slab.h>
16
17 #include <dt-bindings/clock/bm1880-clock.h>
18
19 #define BM1880_CLK_MPLL_CTL 0x00
20 #define BM1880_CLK_SPLL_CTL 0x04
21 #define BM1880_CLK_FPLL_CTL 0x08
22 #define BM1880_CLK_DDRPLL_CTL 0x0c
23
24 #define BM1880_CLK_ENABLE0 0x00
25 #define BM1880_CLK_ENABLE1 0x04
26 #define BM1880_CLK_SELECT 0x20
27 #define BM1880_CLK_DIV0 0x40
28 #define BM1880_CLK_DIV1 0x44
29 #define BM1880_CLK_DIV2 0x48
30 #define BM1880_CLK_DIV3 0x4c
31 #define BM1880_CLK_DIV4 0x50
32 #define BM1880_CLK_DIV5 0x54
33 #define BM1880_CLK_DIV6 0x58
34 #define BM1880_CLK_DIV7 0x5c
35 #define BM1880_CLK_DIV8 0x60
36 #define BM1880_CLK_DIV9 0x64
37 #define BM1880_CLK_DIV10 0x68
38 #define BM1880_CLK_DIV11 0x6c
39 #define BM1880_CLK_DIV12 0x70
40 #define BM1880_CLK_DIV13 0x74
41 #define BM1880_CLK_DIV14 0x78
42 #define BM1880_CLK_DIV15 0x7c
43 #define BM1880_CLK_DIV16 0x80
44 #define BM1880_CLK_DIV17 0x84
45 #define BM1880_CLK_DIV18 0x88
46 #define BM1880_CLK_DIV19 0x8c
47 #define BM1880_CLK_DIV20 0x90
48 #define BM1880_CLK_DIV21 0x94
49 #define BM1880_CLK_DIV22 0x98
50 #define BM1880_CLK_DIV23 0x9c
51 #define BM1880_CLK_DIV24 0xa0
52 #define BM1880_CLK_DIV25 0xa4
53 #define BM1880_CLK_DIV26 0xa8
54 #define BM1880_CLK_DIV27 0xac
55 #define BM1880_CLK_DIV28 0xb0
56
57 #define to_bm1880_pll_clk(_hw) container_of(_hw, struct bm1880_pll_hw_clock, hw)
58 #define to_bm1880_div_clk(_hw) container_of(_hw, struct bm1880_div_hw_clock, hw)
59
60 static DEFINE_SPINLOCK(bm1880_clk_lock);
61
62 struct bm1880_clock_data {
63 void __iomem *pll_base;
64 void __iomem *sys_base;
65 struct clk_hw_onecell_data hw_data;
66 };
67
68 struct bm1880_gate_clock {
69 unsigned int id;
70 const char *name;
71 const char *parent;
72 u32 gate_reg;
73 s8 gate_shift;
74 unsigned long flags;
75 };
76
77 struct bm1880_mux_clock {
78 unsigned int id;
79 const char *name;
80 const char * const *parents;
81 s8 num_parents;
82 u32 reg;
83 s8 shift;
84 unsigned long flags;
85 };
86
87 struct bm1880_div_clock {
88 unsigned int id;
89 const char *name;
90 u32 reg;
91 u8 shift;
92 u8 width;
93 u32 initval;
94 const struct clk_div_table *table;
95 unsigned long flags;
96 };
97
98 struct bm1880_div_hw_clock {
99 struct bm1880_div_clock div;
100 void __iomem *base;
101 spinlock_t *lock;
102 struct clk_hw hw;
103 struct clk_init_data init;
104 };
105
106 struct bm1880_composite_clock {
107 unsigned int id;
108 const char *name;
109 const char *parent;
110 const char * const *parents;
111 unsigned int num_parents;
112 unsigned long flags;
113
114 u32 gate_reg;
115 u32 mux_reg;
116 u32 div_reg;
117
118 s8 gate_shift;
119 s8 mux_shift;
120 s8 div_shift;
121 s8 div_width;
122 s16 div_initval;
123 const struct clk_div_table *table;
124 };
125
126 struct bm1880_pll_clock {
127 unsigned int id;
128 const char *name;
129 u32 reg;
130 unsigned long flags;
131 };
132
133 struct bm1880_pll_hw_clock {
134 struct bm1880_pll_clock pll;
135 void __iomem *base;
136 struct clk_hw hw;
137 struct clk_init_data init;
138 };
139
140 static const struct clk_ops bm1880_pll_ops;
141 static const struct clk_ops bm1880_clk_div_ops;
142
143 #define GATE_DIV(_id, _name, _parent, _gate_reg, _gate_shift, _div_reg, \
144 _div_shift, _div_width, _div_initval, _table, \
145 _flags) { \
146 .id = _id, \
147 .parent = _parent, \
148 .name = _name, \
149 .gate_reg = _gate_reg, \
150 .gate_shift = _gate_shift, \
151 .div_reg = _div_reg, \
152 .div_shift = _div_shift, \
153 .div_width = _div_width, \
154 .div_initval = _div_initval, \
155 .table = _table, \
156 .mux_shift = -1, \
157 .flags = _flags, \
158 }
159
160 #define GATE_MUX(_id, _name, _parents, _gate_reg, _gate_shift, \
161 _mux_reg, _mux_shift, _flags) { \
162 .id = _id, \
163 .parents = _parents, \
164 .num_parents = ARRAY_SIZE(_parents), \
165 .name = _name, \
166 .gate_reg = _gate_reg, \
167 .gate_shift = _gate_shift, \
168 .div_shift = -1, \
169 .mux_reg = _mux_reg, \
170 .mux_shift = _mux_shift, \
171 .flags = _flags, \
172 }
173
174 #define CLK_PLL(_id, _name, _parent, _reg, _flags) { \
175 .pll.id = _id, \
176 .pll.name = _name, \
177 .pll.reg = _reg, \
178 .hw.init = CLK_HW_INIT_PARENTS_DATA(_name, _parent, \
179 &bm1880_pll_ops, \
180 _flags), \
181 }
182
183 #define CLK_DIV(_id, _name, _parent, _reg, _shift, _width, _initval, \
184 _table, _flags) { \
185 .div.id = _id, \
186 .div.name = _name, \
187 .div.reg = _reg, \
188 .div.shift = _shift, \
189 .div.width = _width, \
190 .div.initval = _initval, \
191 .div.table = _table, \
192 .hw.init = CLK_HW_INIT_HW(_name, _parent, \
193 &bm1880_clk_div_ops, \
194 _flags), \
195 }
196
197 static struct clk_parent_data bm1880_pll_parent[] = {
198 { .fw_name = "osc", .name = "osc" },
199 };
200
201 /*
202 * All PLL clocks are marked as CRITICAL, hence they are very crucial
203 * for the functioning of the SoC
204 */
205 static struct bm1880_pll_hw_clock bm1880_pll_clks[] = {
206 CLK_PLL(BM1880_CLK_MPLL, "clk_mpll", bm1880_pll_parent,
207 BM1880_CLK_MPLL_CTL, 0),
208 CLK_PLL(BM1880_CLK_SPLL, "clk_spll", bm1880_pll_parent,
209 BM1880_CLK_SPLL_CTL, 0),
210 CLK_PLL(BM1880_CLK_FPLL, "clk_fpll", bm1880_pll_parent,
211 BM1880_CLK_FPLL_CTL, 0),
212 CLK_PLL(BM1880_CLK_DDRPLL, "clk_ddrpll", bm1880_pll_parent,
213 BM1880_CLK_DDRPLL_CTL, 0),
214 };
215
216 /*
217 * Clocks marked as CRITICAL are needed for the proper functioning
218 * of the SoC.
219 */
220 static const struct bm1880_gate_clock bm1880_gate_clks[] = {
221 { BM1880_CLK_AHB_ROM, "clk_ahb_rom", "clk_mux_axi6",
222 BM1880_CLK_ENABLE0, 2, 0 },
223 { BM1880_CLK_AXI_SRAM, "clk_axi_sram", "clk_axi1",
224 BM1880_CLK_ENABLE0, 3, 0 },
225 /*
226 * Since this clock is sourcing the DDR memory, let's mark it as
227 * critical to avoid gating.
228 */
229 { BM1880_CLK_DDR_AXI, "clk_ddr_axi", "clk_mux_axi6",
230 BM1880_CLK_ENABLE0, 4, CLK_IS_CRITICAL },
231 { BM1880_CLK_APB_EFUSE, "clk_apb_efuse", "clk_mux_axi6",
232 BM1880_CLK_ENABLE0, 6, 0 },
233 { BM1880_CLK_AXI5_EMMC, "clk_axi5_emmc", "clk_axi5",
234 BM1880_CLK_ENABLE0, 7, 0 },
235 { BM1880_CLK_AXI5_SD, "clk_axi5_sd", "clk_axi5",
236 BM1880_CLK_ENABLE0, 10, 0 },
237 { BM1880_CLK_AXI4_ETH0, "clk_axi4_eth0", "clk_axi4",
238 BM1880_CLK_ENABLE0, 14, 0 },
239 { BM1880_CLK_AXI4_ETH1, "clk_axi4_eth1", "clk_axi4",
240 BM1880_CLK_ENABLE0, 16, 0 },
241 { BM1880_CLK_AXI1_GDMA, "clk_axi1_gdma", "clk_axi1",
242 BM1880_CLK_ENABLE0, 17, 0 },
243 /* Don't gate GPIO clocks as it is not owned by the GPIO driver */
244 { BM1880_CLK_APB_GPIO, "clk_apb_gpio", "clk_mux_axi6",
245 BM1880_CLK_ENABLE0, 18, CLK_IGNORE_UNUSED },
246 { BM1880_CLK_APB_GPIO_INTR, "clk_apb_gpio_intr", "clk_mux_axi6",
247 BM1880_CLK_ENABLE0, 19, CLK_IGNORE_UNUSED },
248 { BM1880_CLK_AXI1_MINER, "clk_axi1_miner", "clk_axi1",
249 BM1880_CLK_ENABLE0, 21, 0 },
250 { BM1880_CLK_AHB_SF, "clk_ahb_sf", "clk_mux_axi6",
251 BM1880_CLK_ENABLE0, 22, 0 },
252 /*
253 * Not sure which module this clock is sourcing but gating this clock
254 * prevents the system from booting. So, let's mark it as critical.
255 */
256 { BM1880_CLK_SDMA_AXI, "clk_sdma_axi", "clk_axi5",
257 BM1880_CLK_ENABLE0, 23, CLK_IS_CRITICAL },
258 { BM1880_CLK_APB_I2C, "clk_apb_i2c", "clk_mux_axi6",
259 BM1880_CLK_ENABLE0, 25, 0 },
260 { BM1880_CLK_APB_WDT, "clk_apb_wdt", "clk_mux_axi6",
261 BM1880_CLK_ENABLE0, 26, 0 },
262 { BM1880_CLK_APB_JPEG, "clk_apb_jpeg", "clk_axi6",
263 BM1880_CLK_ENABLE0, 27, 0 },
264 { BM1880_CLK_AXI5_NF, "clk_axi5_nf", "clk_axi5",
265 BM1880_CLK_ENABLE0, 29, 0 },
266 { BM1880_CLK_APB_NF, "clk_apb_nf", "clk_axi6",
267 BM1880_CLK_ENABLE0, 30, 0 },
268 { BM1880_CLK_APB_PWM, "clk_apb_pwm", "clk_mux_axi6",
269 BM1880_CLK_ENABLE1, 0, 0 },
270 { BM1880_CLK_RV, "clk_rv", "clk_mux_rv",
271 BM1880_CLK_ENABLE1, 1, 0 },
272 { BM1880_CLK_APB_SPI, "clk_apb_spi", "clk_mux_axi6",
273 BM1880_CLK_ENABLE1, 2, 0 },
274 { BM1880_CLK_UART_500M, "clk_uart_500m", "clk_div_uart_500m",
275 BM1880_CLK_ENABLE1, 4, 0 },
276 { BM1880_CLK_APB_UART, "clk_apb_uart", "clk_axi6",
277 BM1880_CLK_ENABLE1, 5, 0 },
278 { BM1880_CLK_APB_I2S, "clk_apb_i2s", "clk_axi6",
279 BM1880_CLK_ENABLE1, 6, 0 },
280 { BM1880_CLK_AXI4_USB, "clk_axi4_usb", "clk_axi4",
281 BM1880_CLK_ENABLE1, 7, 0 },
282 { BM1880_CLK_APB_USB, "clk_apb_usb", "clk_axi6",
283 BM1880_CLK_ENABLE1, 8, 0 },
284 { BM1880_CLK_12M_USB, "clk_12m_usb", "clk_div_12m_usb",
285 BM1880_CLK_ENABLE1, 11, 0 },
286 { BM1880_CLK_APB_VIDEO, "clk_apb_video", "clk_axi6",
287 BM1880_CLK_ENABLE1, 12, 0 },
288 { BM1880_CLK_APB_VPP, "clk_apb_vpp", "clk_axi6",
289 BM1880_CLK_ENABLE1, 15, 0 },
290 { BM1880_CLK_AXI6, "clk_axi6", "clk_mux_axi6",
291 BM1880_CLK_ENABLE1, 21, 0 },
292 };
293
294 static const char * const clk_a53_parents[] = { "clk_spll", "clk_mpll" };
295 static const char * const clk_rv_parents[] = { "clk_div_1_rv", "clk_div_0_rv" };
296 static const char * const clk_axi1_parents[] = { "clk_div_1_axi1", "clk_div_0_axi1" };
297 static const char * const clk_axi6_parents[] = { "clk_div_1_axi6", "clk_div_0_axi6" };
298
299 static const struct bm1880_mux_clock bm1880_mux_clks[] = {
300 { BM1880_CLK_MUX_RV, "clk_mux_rv", clk_rv_parents, 2,
301 BM1880_CLK_SELECT, 1, 0 },
302 { BM1880_CLK_MUX_AXI6, "clk_mux_axi6", clk_axi6_parents, 2,
303 BM1880_CLK_SELECT, 3, 0 },
304 };
305
306 static const struct clk_div_table bm1880_div_table_0[] = {
307 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
308 { 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 8 },
309 { 8, 9 }, { 9, 10 }, { 10, 11 }, { 11, 12 },
310 { 12, 13 }, { 13, 14 }, { 14, 15 }, { 15, 16 },
311 { 16, 17 }, { 17, 18 }, { 18, 19 }, { 19, 20 },
312 { 20, 21 }, { 21, 22 }, { 22, 23 }, { 23, 24 },
313 { 24, 25 }, { 25, 26 }, { 26, 27 }, { 27, 28 },
314 { 28, 29 }, { 29, 30 }, { 30, 31 }, { 31, 32 },
315 { 0, 0 }
316 };
317
318 static const struct clk_div_table bm1880_div_table_1[] = {
319 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
320 { 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 8 },
321 { 8, 9 }, { 9, 10 }, { 10, 11 }, { 11, 12 },
322 { 12, 13 }, { 13, 14 }, { 14, 15 }, { 15, 16 },
323 { 16, 17 }, { 17, 18 }, { 18, 19 }, { 19, 20 },
324 { 20, 21 }, { 21, 22 }, { 22, 23 }, { 23, 24 },
325 { 24, 25 }, { 25, 26 }, { 26, 27 }, { 27, 28 },
326 { 28, 29 }, { 29, 30 }, { 30, 31 }, { 31, 32 },
327 { 127, 128 }, { 0, 0 }
328 };
329
330 static const struct clk_div_table bm1880_div_table_2[] = {
331 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
332 { 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 8 },
333 { 8, 9 }, { 9, 10 }, { 10, 11 }, { 11, 12 },
334 { 12, 13 }, { 13, 14 }, { 14, 15 }, { 15, 16 },
335 { 16, 17 }, { 17, 18 }, { 18, 19 }, { 19, 20 },
336 { 20, 21 }, { 21, 22 }, { 22, 23 }, { 23, 24 },
337 { 24, 25 }, { 25, 26 }, { 26, 27 }, { 27, 28 },
338 { 28, 29 }, { 29, 30 }, { 30, 31 }, { 31, 32 },
339 { 127, 128 }, { 255, 256 }, { 0, 0 }
340 };
341
342 static const struct clk_div_table bm1880_div_table_3[] = {
343 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
344 { 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 8 },
345 { 8, 9 }, { 9, 10 }, { 10, 11 }, { 11, 12 },
346 { 12, 13 }, { 13, 14 }, { 14, 15 }, { 15, 16 },
347 { 16, 17 }, { 17, 18 }, { 18, 19 }, { 19, 20 },
348 { 20, 21 }, { 21, 22 }, { 22, 23 }, { 23, 24 },
349 { 24, 25 }, { 25, 26 }, { 26, 27 }, { 27, 28 },
350 { 28, 29 }, { 29, 30 }, { 30, 31 }, { 31, 32 },
351 { 127, 128 }, { 255, 256 }, { 511, 512 }, { 0, 0 }
352 };
353
354 static const struct clk_div_table bm1880_div_table_4[] = {
355 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
356 { 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 8 },
357 { 8, 9 }, { 9, 10 }, { 10, 11 }, { 11, 12 },
358 { 12, 13 }, { 13, 14 }, { 14, 15 }, { 15, 16 },
359 { 16, 17 }, { 17, 18 }, { 18, 19 }, { 19, 20 },
360 { 20, 21 }, { 21, 22 }, { 22, 23 }, { 23, 24 },
361 { 24, 25 }, { 25, 26 }, { 26, 27 }, { 27, 28 },
362 { 28, 29 }, { 29, 30 }, { 30, 31 }, { 31, 32 },
363 { 127, 128 }, { 255, 256 }, { 511, 512 }, { 65535, 65536 },
364 { 0, 0 }
365 };
366
367 /*
368 * Clocks marked as CRITICAL are needed for the proper functioning
369 * of the SoC.
370 */
371 static struct bm1880_div_hw_clock bm1880_div_clks[] = {
372 CLK_DIV(BM1880_CLK_DIV_0_RV, "clk_div_0_rv", &bm1880_pll_clks[1].hw,
373 BM1880_CLK_DIV12, 16, 5, 1, bm1880_div_table_0, 0),
374 CLK_DIV(BM1880_CLK_DIV_1_RV, "clk_div_1_rv", &bm1880_pll_clks[2].hw,
375 BM1880_CLK_DIV13, 16, 5, 1, bm1880_div_table_0, 0),
376 CLK_DIV(BM1880_CLK_DIV_UART_500M, "clk_div_uart_500m", &bm1880_pll_clks[2].hw,
377 BM1880_CLK_DIV15, 16, 7, 3, bm1880_div_table_1, 0),
378 CLK_DIV(BM1880_CLK_DIV_0_AXI1, "clk_div_0_axi1", &bm1880_pll_clks[0].hw,
379 BM1880_CLK_DIV21, 16, 5, 2, bm1880_div_table_0,
380 0),
381 CLK_DIV(BM1880_CLK_DIV_1_AXI1, "clk_div_1_axi1", &bm1880_pll_clks[2].hw,
382 BM1880_CLK_DIV22, 16, 5, 3, bm1880_div_table_0,
383 0),
384 CLK_DIV(BM1880_CLK_DIV_0_AXI6, "clk_div_0_axi6", &bm1880_pll_clks[2].hw,
385 BM1880_CLK_DIV27, 16, 5, 15, bm1880_div_table_0,
386 0),
387 CLK_DIV(BM1880_CLK_DIV_1_AXI6, "clk_div_1_axi6", &bm1880_pll_clks[0].hw,
388 BM1880_CLK_DIV28, 16, 5, 11, bm1880_div_table_0,
389 0),
390 CLK_DIV(BM1880_CLK_DIV_12M_USB, "clk_div_12m_usb", &bm1880_pll_clks[2].hw,
391 BM1880_CLK_DIV18, 16, 7, 125, bm1880_div_table_1, 0),
392 };
393
394 /*
395 * Clocks marked as CRITICAL are all needed for the proper functioning
396 * of the SoC.
397 */
398 static struct bm1880_composite_clock bm1880_composite_clks[] = {
399 /*
400 * Since clk_a53 and clk_50m_a53 clocks are sourcing the CPU core,
401 * let's mark them as critical to avoid gating.
402 */
403 GATE_MUX(BM1880_CLK_A53, "clk_a53", clk_a53_parents,
404 BM1880_CLK_ENABLE0, 0, BM1880_CLK_SELECT, 0,
405 CLK_IS_CRITICAL),
406 GATE_DIV(BM1880_CLK_50M_A53, "clk_50m_a53", "clk_fpll",
407 BM1880_CLK_ENABLE0, 1, BM1880_CLK_DIV0, 16, 5, 30,
408 bm1880_div_table_0, CLK_IS_CRITICAL),
409 GATE_DIV(BM1880_CLK_EFUSE, "clk_efuse", "clk_fpll",
410 BM1880_CLK_ENABLE0, 5, BM1880_CLK_DIV1, 16, 7, 60,
411 bm1880_div_table_1, 0),
412 GATE_DIV(BM1880_CLK_EMMC, "clk_emmc", "clk_fpll",
413 BM1880_CLK_ENABLE0, 8, BM1880_CLK_DIV2, 16, 5, 15,
414 bm1880_div_table_0, 0),
415 GATE_DIV(BM1880_CLK_100K_EMMC, "clk_100k_emmc", "clk_div_12m_usb",
416 BM1880_CLK_ENABLE0, 9, BM1880_CLK_DIV3, 16, 8, 120,
417 bm1880_div_table_2, 0),
418 GATE_DIV(BM1880_CLK_SD, "clk_sd", "clk_fpll",
419 BM1880_CLK_ENABLE0, 11, BM1880_CLK_DIV4, 16, 5, 15,
420 bm1880_div_table_0, 0),
421 GATE_DIV(BM1880_CLK_100K_SD, "clk_100k_sd", "clk_div_12m_usb",
422 BM1880_CLK_ENABLE0, 12, BM1880_CLK_DIV5, 16, 8, 120,
423 bm1880_div_table_2, 0),
424 GATE_DIV(BM1880_CLK_500M_ETH0, "clk_500m_eth0", "clk_fpll",
425 BM1880_CLK_ENABLE0, 13, BM1880_CLK_DIV6, 16, 5, 3,
426 bm1880_div_table_0, 0),
427 GATE_DIV(BM1880_CLK_500M_ETH1, "clk_500m_eth1", "clk_fpll",
428 BM1880_CLK_ENABLE0, 15, BM1880_CLK_DIV7, 16, 5, 3,
429 bm1880_div_table_0, 0),
430 /* Don't gate GPIO clocks as it is not owned by the GPIO driver */
431 GATE_DIV(BM1880_CLK_GPIO_DB, "clk_gpio_db", "clk_div_12m_usb",
432 BM1880_CLK_ENABLE0, 20, BM1880_CLK_DIV8, 16, 16, 120,
433 bm1880_div_table_4, CLK_IGNORE_UNUSED),
434 GATE_DIV(BM1880_CLK_SDMA_AUD, "clk_sdma_aud", "clk_fpll",
435 BM1880_CLK_ENABLE0, 24, BM1880_CLK_DIV9, 16, 7, 61,
436 bm1880_div_table_1, 0),
437 GATE_DIV(BM1880_CLK_JPEG_AXI, "clk_jpeg_axi", "clk_fpll",
438 BM1880_CLK_ENABLE0, 28, BM1880_CLK_DIV10, 16, 5, 4,
439 bm1880_div_table_0, 0),
440 GATE_DIV(BM1880_CLK_NF, "clk_nf", "clk_fpll",
441 BM1880_CLK_ENABLE0, 31, BM1880_CLK_DIV11, 16, 5, 30,
442 bm1880_div_table_0, 0),
443 GATE_DIV(BM1880_CLK_TPU_AXI, "clk_tpu_axi", "clk_spll",
444 BM1880_CLK_ENABLE1, 3, BM1880_CLK_DIV14, 16, 5, 1,
445 bm1880_div_table_0, 0),
446 GATE_DIV(BM1880_CLK_125M_USB, "clk_125m_usb", "clk_fpll",
447 BM1880_CLK_ENABLE1, 9, BM1880_CLK_DIV16, 16, 5, 12,
448 bm1880_div_table_0, 0),
449 GATE_DIV(BM1880_CLK_33K_USB, "clk_33k_usb", "clk_div_12m_usb",
450 BM1880_CLK_ENABLE1, 10, BM1880_CLK_DIV17, 16, 9, 363,
451 bm1880_div_table_3, 0),
452 GATE_DIV(BM1880_CLK_VIDEO_AXI, "clk_video_axi", "clk_fpll",
453 BM1880_CLK_ENABLE1, 13, BM1880_CLK_DIV19, 16, 5, 4,
454 bm1880_div_table_0, 0),
455 GATE_DIV(BM1880_CLK_VPP_AXI, "clk_vpp_axi", "clk_fpll",
456 BM1880_CLK_ENABLE1, 14, BM1880_CLK_DIV20, 16, 5, 4,
457 bm1880_div_table_0, 0),
458 GATE_MUX(BM1880_CLK_AXI1, "clk_axi1", clk_axi1_parents,
459 BM1880_CLK_ENABLE1, 15, BM1880_CLK_SELECT, 2, 0),
460 GATE_DIV(BM1880_CLK_AXI2, "clk_axi2", "clk_fpll",
461 BM1880_CLK_ENABLE1, 17, BM1880_CLK_DIV23, 16, 5, 3,
462 bm1880_div_table_0, 0),
463 GATE_DIV(BM1880_CLK_AXI3, "clk_axi3", "clk_mux_rv",
464 BM1880_CLK_ENABLE1, 18, BM1880_CLK_DIV24, 16, 5, 2,
465 bm1880_div_table_0, 0),
466 GATE_DIV(BM1880_CLK_AXI4, "clk_axi4", "clk_fpll",
467 BM1880_CLK_ENABLE1, 19, BM1880_CLK_DIV25, 16, 5, 6,
468 bm1880_div_table_0, 0),
469 GATE_DIV(BM1880_CLK_AXI5, "clk_axi5", "clk_fpll",
470 BM1880_CLK_ENABLE1, 20, BM1880_CLK_DIV26, 16, 5, 15,
471 bm1880_div_table_0, 0),
472 };
473
474 static unsigned long bm1880_pll_rate_calc(u32 regval, unsigned long parent_rate)
475 {
476 u64 numerator;
477 u32 fbdiv, fref, refdiv;
478 u32 postdiv1, postdiv2, denominator;
479
480 fbdiv = (regval >> 16) & 0xfff;
481 fref = parent_rate;
482 refdiv = regval & 0x1f;
483 postdiv1 = (regval >> 8) & 0x7;
484 postdiv2 = (regval >> 12) & 0x7;
485
486 numerator = parent_rate * fbdiv;
487 denominator = refdiv * postdiv1 * postdiv2;
488 do_div(numerator, denominator);
489
490 return (unsigned long)numerator;
491 }
492
493 static unsigned long bm1880_pll_recalc_rate(struct clk_hw *hw,
494 unsigned long parent_rate)
495 {
496 struct bm1880_pll_hw_clock *pll_hw = to_bm1880_pll_clk(hw);
497 unsigned long rate;
498 u32 regval;
499
500 regval = readl(pll_hw->base + pll_hw->pll.reg);
501 rate = bm1880_pll_rate_calc(regval, parent_rate);
502
503 return rate;
504 }
505
506 static const struct clk_ops bm1880_pll_ops = {
507 .recalc_rate = bm1880_pll_recalc_rate,
508 };
509
510 static struct clk_hw *bm1880_clk_register_pll(struct bm1880_pll_hw_clock *pll_clk,
511 void __iomem *sys_base)
512 {
513 struct clk_hw *hw;
514 int err;
515
516 pll_clk->base = sys_base;
517 hw = &pll_clk->hw;
518
519 err = clk_hw_register(NULL, hw);
520 if (err)
521 return ERR_PTR(err);
522
523 return hw;
524 }
525
526 static void bm1880_clk_unregister_pll(struct clk_hw *hw)
527 {
528 struct bm1880_pll_hw_clock *pll_hw = to_bm1880_pll_clk(hw);
529
530 clk_hw_unregister(hw);
531 kfree(pll_hw);
532 }
533
534 static int bm1880_clk_register_plls(struct bm1880_pll_hw_clock *clks,
535 int num_clks,
536 struct bm1880_clock_data *data)
537 {
538 struct clk_hw *hw;
539 void __iomem *pll_base = data->pll_base;
540 int i;
541
542 for (i = 0; i < num_clks; i++) {
543 struct bm1880_pll_hw_clock *bm1880_clk = &clks[i];
544
545 hw = bm1880_clk_register_pll(bm1880_clk, pll_base);
546 if (IS_ERR(hw)) {
547 pr_err("%s: failed to register clock %s\n",
548 __func__, bm1880_clk->pll.name);
549 goto err_clk;
550 }
551
552 data->hw_data.hws[clks[i].pll.id] = hw;
553 }
554
555 return 0;
556
557 err_clk:
558 while (i--)
559 bm1880_clk_unregister_pll(data->hw_data.hws[clks[i].pll.id]);
560
561 return PTR_ERR(hw);
562 }
563
564 static int bm1880_clk_register_mux(const struct bm1880_mux_clock *clks,
565 int num_clks,
566 struct bm1880_clock_data *data)
567 {
568 struct clk_hw *hw;
569 void __iomem *sys_base = data->sys_base;
570 int i;
571
572 for (i = 0; i < num_clks; i++) {
573 hw = clk_hw_register_mux(NULL, clks[i].name,
574 clks[i].parents,
575 clks[i].num_parents,
576 clks[i].flags,
577 sys_base + clks[i].reg,
578 clks[i].shift, 1, 0,
579 &bm1880_clk_lock);
580 if (IS_ERR(hw)) {
581 pr_err("%s: failed to register clock %s\n",
582 __func__, clks[i].name);
583 goto err_clk;
584 }
585
586 data->hw_data.hws[clks[i].id] = hw;
587 }
588
589 return 0;
590
591 err_clk:
592 while (i--)
593 clk_hw_unregister_mux(data->hw_data.hws[clks[i].id]);
594
595 return PTR_ERR(hw);
596 }
597
598 static unsigned long bm1880_clk_div_recalc_rate(struct clk_hw *hw,
599 unsigned long parent_rate)
600 {
601 struct bm1880_div_hw_clock *div_hw = to_bm1880_div_clk(hw);
602 struct bm1880_div_clock *div = &div_hw->div;
603 void __iomem *reg_addr = div_hw->base + div->reg;
604 unsigned int val;
605 unsigned long rate;
606
607 if (!(readl(reg_addr) & BIT(3))) {
608 val = div->initval;
609 } else {
610 val = readl(reg_addr) >> div->shift;
611 val &= clk_div_mask(div->width);
612 }
613
614 rate = divider_recalc_rate(hw, parent_rate, val, div->table,
615 div->flags, div->width);
616
617 return rate;
618 }
619
620 static long bm1880_clk_div_round_rate(struct clk_hw *hw, unsigned long rate,
621 unsigned long *prate)
622 {
623 struct bm1880_div_hw_clock *div_hw = to_bm1880_div_clk(hw);
624 struct bm1880_div_clock *div = &div_hw->div;
625 void __iomem *reg_addr = div_hw->base + div->reg;
626
627 if (div->flags & CLK_DIVIDER_READ_ONLY) {
628 u32 val;
629
630 val = readl(reg_addr) >> div->shift;
631 val &= clk_div_mask(div->width);
632
633 return divider_ro_round_rate(hw, rate, prate, div->table,
634 div->width, div->flags,
635 val);
636 }
637
638 return divider_round_rate(hw, rate, prate, div->table,
639 div->width, div->flags);
640 }
641
642 static int bm1880_clk_div_set_rate(struct clk_hw *hw, unsigned long rate,
643 unsigned long parent_rate)
644 {
645 struct bm1880_div_hw_clock *div_hw = to_bm1880_div_clk(hw);
646 struct bm1880_div_clock *div = &div_hw->div;
647 void __iomem *reg_addr = div_hw->base + div->reg;
648 unsigned long flags = 0;
649 int value;
650 u32 val;
651
652 value = divider_get_val(rate, parent_rate, div->table,
653 div->width, div_hw->div.flags);
654 if (value < 0)
655 return value;
656
657 if (div_hw->lock)
658 spin_lock_irqsave(div_hw->lock, flags);
659 else
660 __acquire(div_hw->lock);
661
662 val = readl(reg_addr);
663 val &= ~(clk_div_mask(div->width) << div_hw->div.shift);
664 val |= (u32)value << div->shift;
665 writel(val, reg_addr);
666
667 if (div_hw->lock)
668 spin_unlock_irqrestore(div_hw->lock, flags);
669 else
670 __release(div_hw->lock);
671
672 return 0;
673 }
674
675 static const struct clk_ops bm1880_clk_div_ops = {
676 .recalc_rate = bm1880_clk_div_recalc_rate,
677 .round_rate = bm1880_clk_div_round_rate,
678 .set_rate = bm1880_clk_div_set_rate,
679 };
680
681 static struct clk_hw *bm1880_clk_register_div(struct bm1880_div_hw_clock *div_clk,
682 void __iomem *sys_base)
683 {
684 struct clk_hw *hw;
685 int err;
686
687 div_clk->div.flags = CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO;
688 div_clk->base = sys_base;
689 div_clk->lock = &bm1880_clk_lock;
690
691 hw = &div_clk->hw;
692 err = clk_hw_register(NULL, hw);
693 if (err)
694 return ERR_PTR(err);
695
696 return hw;
697 }
698
699 static void bm1880_clk_unregister_div(struct clk_hw *hw)
700 {
701 struct bm1880_div_hw_clock *div_hw = to_bm1880_div_clk(hw);
702
703 clk_hw_unregister(hw);
704 kfree(div_hw);
705 }
706
707 static int bm1880_clk_register_divs(struct bm1880_div_hw_clock *clks,
708 int num_clks,
709 struct bm1880_clock_data *data)
710 {
711 struct clk_hw *hw;
712 void __iomem *sys_base = data->sys_base;
713 unsigned int i, id;
714
715 for (i = 0; i < num_clks; i++) {
716 struct bm1880_div_hw_clock *bm1880_clk = &clks[i];
717
718 hw = bm1880_clk_register_div(bm1880_clk, sys_base);
719 if (IS_ERR(hw)) {
720 pr_err("%s: failed to register clock %s\n",
721 __func__, bm1880_clk->div.name);
722 goto err_clk;
723 }
724
725 id = clks[i].div.id;
726 data->hw_data.hws[id] = hw;
727 }
728
729 return 0;
730
731 err_clk:
732 while (i--)
733 bm1880_clk_unregister_div(data->hw_data.hws[clks[i].div.id]);
734
735 return PTR_ERR(hw);
736 }
737
738 static int bm1880_clk_register_gate(const struct bm1880_gate_clock *clks,
739 int num_clks,
740 struct bm1880_clock_data *data)
741 {
742 struct clk_hw *hw;
743 void __iomem *sys_base = data->sys_base;
744 int i;
745
746 for (i = 0; i < num_clks; i++) {
747 hw = clk_hw_register_gate(NULL, clks[i].name,
748 clks[i].parent,
749 clks[i].flags,
750 sys_base + clks[i].gate_reg,
751 clks[i].gate_shift, 0,
752 &bm1880_clk_lock);
753 if (IS_ERR(hw)) {
754 pr_err("%s: failed to register clock %s\n",
755 __func__, clks[i].name);
756 goto err_clk;
757 }
758
759 data->hw_data.hws[clks[i].id] = hw;
760 }
761
762 return 0;
763
764 err_clk:
765 while (i--)
766 clk_hw_unregister_gate(data->hw_data.hws[clks[i].id]);
767
768 return PTR_ERR(hw);
769 }
770
771 static struct clk_hw *bm1880_clk_register_composite(struct bm1880_composite_clock *clks,
772 void __iomem *sys_base)
773 {
774 struct clk_hw *hw;
775 struct clk_mux *mux = NULL;
776 struct clk_gate *gate = NULL;
777 struct bm1880_div_hw_clock *div_hws = NULL;
778 struct clk_hw *mux_hw = NULL, *gate_hw = NULL, *div_hw = NULL;
779 const struct clk_ops *mux_ops = NULL, *gate_ops = NULL, *div_ops = NULL;
780 const char * const *parent_names;
781 const char *parent;
782 int num_parents;
783 int ret;
784
785 if (clks->mux_shift >= 0) {
786 mux = kzalloc(sizeof(*mux), GFP_KERNEL);
787 if (!mux)
788 return ERR_PTR(-ENOMEM);
789
790 mux->reg = sys_base + clks->mux_reg;
791 mux->mask = 1;
792 mux->shift = clks->mux_shift;
793 mux_hw = &mux->hw;
794 mux_ops = &clk_mux_ops;
795 mux->lock = &bm1880_clk_lock;
796
797 parent_names = clks->parents;
798 num_parents = clks->num_parents;
799 } else {
800 parent = clks->parent;
801 parent_names = &parent;
802 num_parents = 1;
803 }
804
805 if (clks->gate_shift >= 0) {
806 gate = kzalloc(sizeof(*gate), GFP_KERNEL);
807 if (!gate) {
808 ret = -ENOMEM;
809 goto err_out;
810 }
811
812 gate->reg = sys_base + clks->gate_reg;
813 gate->bit_idx = clks->gate_shift;
814 gate->lock = &bm1880_clk_lock;
815
816 gate_hw = &gate->hw;
817 gate_ops = &clk_gate_ops;
818 }
819
820 if (clks->div_shift >= 0) {
821 div_hws = kzalloc(sizeof(*div_hws), GFP_KERNEL);
822 if (!div_hws) {
823 ret = -ENOMEM;
824 goto err_out;
825 }
826
827 div_hws->base = sys_base;
828 div_hws->div.reg = clks->div_reg;
829 div_hws->div.shift = clks->div_shift;
830 div_hws->div.width = clks->div_width;
831 div_hws->div.table = clks->table;
832 div_hws->div.initval = clks->div_initval;
833 div_hws->lock = &bm1880_clk_lock;
834 div_hws->div.flags = CLK_DIVIDER_ONE_BASED |
835 CLK_DIVIDER_ALLOW_ZERO;
836
837 div_hw = &div_hws->hw;
838 div_ops = &bm1880_clk_div_ops;
839 }
840
841 hw = clk_hw_register_composite(NULL, clks->name, parent_names,
842 num_parents, mux_hw, mux_ops, div_hw,
843 div_ops, gate_hw, gate_ops,
844 clks->flags);
845
846 if (IS_ERR(hw)) {
847 ret = PTR_ERR(hw);
848 goto err_out;
849 }
850
851 return hw;
852
853 err_out:
854 kfree(div_hws);
855 kfree(gate);
856 kfree(mux);
857
858 return ERR_PTR(ret);
859 }
860
861 static int bm1880_clk_register_composites(struct bm1880_composite_clock *clks,
862 int num_clks,
863 struct bm1880_clock_data *data)
864 {
865 struct clk_hw *hw;
866 void __iomem *sys_base = data->sys_base;
867 int i;
868
869 for (i = 0; i < num_clks; i++) {
870 struct bm1880_composite_clock *bm1880_clk = &clks[i];
871
872 hw = bm1880_clk_register_composite(bm1880_clk, sys_base);
873 if (IS_ERR(hw)) {
874 pr_err("%s: failed to register clock %s\n",
875 __func__, bm1880_clk->name);
876 goto err_clk;
877 }
878
879 data->hw_data.hws[clks[i].id] = hw;
880 }
881
882 return 0;
883
884 err_clk:
885 while (i--)
886 clk_hw_unregister_composite(data->hw_data.hws[clks[i].id]);
887
888 return PTR_ERR(hw);
889 }
890
891 static int bm1880_clk_probe(struct platform_device *pdev)
892 {
893 struct bm1880_clock_data *clk_data;
894 void __iomem *pll_base, *sys_base;
895 struct device *dev = &pdev->dev;
896 struct resource *res;
897 int num_clks, i;
898
899 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
900 pll_base = devm_ioremap_resource(&pdev->dev, res);
901 if (IS_ERR(pll_base))
902 return PTR_ERR(pll_base);
903
904 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
905 sys_base = devm_ioremap_resource(&pdev->dev, res);
906 if (IS_ERR(sys_base))
907 return PTR_ERR(sys_base);
908
909 num_clks = ARRAY_SIZE(bm1880_pll_clks) +
910 ARRAY_SIZE(bm1880_div_clks) +
911 ARRAY_SIZE(bm1880_mux_clks) +
912 ARRAY_SIZE(bm1880_composite_clks) +
913 ARRAY_SIZE(bm1880_gate_clks);
914
915 clk_data = devm_kzalloc(dev, struct_size(clk_data, hw_data.hws,
916 num_clks), GFP_KERNEL);
917 if (!clk_data)
918 return -ENOMEM;
919
920 clk_data->pll_base = pll_base;
921 clk_data->sys_base = sys_base;
922
923 for (i = 0; i < num_clks; i++)
924 clk_data->hw_data.hws[i] = ERR_PTR(-ENOENT);
925
926 clk_data->hw_data.num = num_clks;
927
928 bm1880_clk_register_plls(bm1880_pll_clks,
929 ARRAY_SIZE(bm1880_pll_clks),
930 clk_data);
931
932 bm1880_clk_register_divs(bm1880_div_clks,
933 ARRAY_SIZE(bm1880_div_clks),
934 clk_data);
935
936 bm1880_clk_register_mux(bm1880_mux_clks,
937 ARRAY_SIZE(bm1880_mux_clks),
938 clk_data);
939
940 bm1880_clk_register_composites(bm1880_composite_clks,
941 ARRAY_SIZE(bm1880_composite_clks),
942 clk_data);
943
944 bm1880_clk_register_gate(bm1880_gate_clks,
945 ARRAY_SIZE(bm1880_gate_clks),
946 clk_data);
947
948 return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
949 &clk_data->hw_data);
950 }
951
952 static const struct of_device_id bm1880_of_match[] = {
953 { .compatible = "bitmain,bm1880-clk", },
954 {}
955 };
956 MODULE_DEVICE_TABLE(of, bm1880_of_match);
957
958 static struct platform_driver bm1880_clk_driver = {
959 .driver = {
960 .name = "bm1880-clk",
961 .of_match_table = bm1880_of_match,
962 },
963 .probe = bm1880_clk_probe,
964 };
965 module_platform_driver(bm1880_clk_driver);
966
967 MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
968 MODULE_DESCRIPTION("Clock driver for Bitmain BM1880 SoC");
969 MODULE_LICENSE("GPL v2");
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