]>
Commit | Line | Data |
---|---|---|
2d7a548a JRN |
1 | /* |
2 | * Copyright (c) 2016 Google, Inc | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 or later as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #include <linux/clk.h> | |
7ed1c5e5 | 10 | #include <linux/errno.h> |
2d7a548a JRN |
11 | #include <linux/gpio/consumer.h> |
12 | #include <linux/delay.h> | |
13 | #include <linux/hwmon.h> | |
14 | #include <linux/hwmon-sysfs.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/of_platform.h> | |
19 | #include <linux/of_device.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/sysfs.h> | |
22 | #include <linux/regmap.h> | |
23 | ||
24 | /* ASPEED PWM & FAN Tach Register Definition */ | |
25 | #define ASPEED_PTCR_CTRL 0x00 | |
26 | #define ASPEED_PTCR_CLK_CTRL 0x04 | |
27 | #define ASPEED_PTCR_DUTY0_CTRL 0x08 | |
28 | #define ASPEED_PTCR_DUTY1_CTRL 0x0c | |
29 | #define ASPEED_PTCR_TYPEM_CTRL 0x10 | |
30 | #define ASPEED_PTCR_TYPEM_CTRL1 0x14 | |
31 | #define ASPEED_PTCR_TYPEN_CTRL 0x18 | |
32 | #define ASPEED_PTCR_TYPEN_CTRL1 0x1c | |
33 | #define ASPEED_PTCR_TACH_SOURCE 0x20 | |
34 | #define ASPEED_PTCR_TRIGGER 0x28 | |
35 | #define ASPEED_PTCR_RESULT 0x2c | |
36 | #define ASPEED_PTCR_INTR_CTRL 0x30 | |
37 | #define ASPEED_PTCR_INTR_STS 0x34 | |
38 | #define ASPEED_PTCR_TYPEM_LIMIT 0x38 | |
39 | #define ASPEED_PTCR_TYPEN_LIMIT 0x3C | |
40 | #define ASPEED_PTCR_CTRL_EXT 0x40 | |
41 | #define ASPEED_PTCR_CLK_CTRL_EXT 0x44 | |
42 | #define ASPEED_PTCR_DUTY2_CTRL 0x48 | |
43 | #define ASPEED_PTCR_DUTY3_CTRL 0x4c | |
44 | #define ASPEED_PTCR_TYPEO_CTRL 0x50 | |
45 | #define ASPEED_PTCR_TYPEO_CTRL1 0x54 | |
46 | #define ASPEED_PTCR_TACH_SOURCE_EXT 0x60 | |
47 | #define ASPEED_PTCR_TYPEO_LIMIT 0x78 | |
48 | ||
49 | /* ASPEED_PTCR_CTRL : 0x00 - General Control Register */ | |
50 | #define ASPEED_PTCR_CTRL_SET_PWMD_TYPE_PART1 15 | |
51 | #define ASPEED_PTCR_CTRL_SET_PWMD_TYPE_PART2 6 | |
52 | #define ASPEED_PTCR_CTRL_SET_PWMD_TYPE_MASK (BIT(7) | BIT(15)) | |
53 | ||
54 | #define ASPEED_PTCR_CTRL_SET_PWMC_TYPE_PART1 14 | |
55 | #define ASPEED_PTCR_CTRL_SET_PWMC_TYPE_PART2 5 | |
56 | #define ASPEED_PTCR_CTRL_SET_PWMC_TYPE_MASK (BIT(6) | BIT(14)) | |
57 | ||
58 | #define ASPEED_PTCR_CTRL_SET_PWMB_TYPE_PART1 13 | |
59 | #define ASPEED_PTCR_CTRL_SET_PWMB_TYPE_PART2 4 | |
60 | #define ASPEED_PTCR_CTRL_SET_PWMB_TYPE_MASK (BIT(5) | BIT(13)) | |
61 | ||
62 | #define ASPEED_PTCR_CTRL_SET_PWMA_TYPE_PART1 12 | |
63 | #define ASPEED_PTCR_CTRL_SET_PWMA_TYPE_PART2 3 | |
64 | #define ASPEED_PTCR_CTRL_SET_PWMA_TYPE_MASK (BIT(4) | BIT(12)) | |
65 | ||
66 | #define ASPEED_PTCR_CTRL_FAN_NUM_EN(x) BIT(16 + (x)) | |
67 | ||
68 | #define ASPEED_PTCR_CTRL_PWMD_EN BIT(11) | |
69 | #define ASPEED_PTCR_CTRL_PWMC_EN BIT(10) | |
70 | #define ASPEED_PTCR_CTRL_PWMB_EN BIT(9) | |
71 | #define ASPEED_PTCR_CTRL_PWMA_EN BIT(8) | |
72 | ||
73 | #define ASPEED_PTCR_CTRL_CLK_SRC BIT(1) | |
74 | #define ASPEED_PTCR_CTRL_CLK_EN BIT(0) | |
75 | ||
76 | /* ASPEED_PTCR_CLK_CTRL : 0x04 - Clock Control Register */ | |
77 | /* TYPE N */ | |
78 | #define ASPEED_PTCR_CLK_CTRL_TYPEN_MASK GENMASK(31, 16) | |
79 | #define ASPEED_PTCR_CLK_CTRL_TYPEN_UNIT 24 | |
80 | #define ASPEED_PTCR_CLK_CTRL_TYPEN_H 20 | |
81 | #define ASPEED_PTCR_CLK_CTRL_TYPEN_L 16 | |
82 | /* TYPE M */ | |
83 | #define ASPEED_PTCR_CLK_CTRL_TYPEM_MASK GENMASK(15, 0) | |
84 | #define ASPEED_PTCR_CLK_CTRL_TYPEM_UNIT 8 | |
85 | #define ASPEED_PTCR_CLK_CTRL_TYPEM_H 4 | |
86 | #define ASPEED_PTCR_CLK_CTRL_TYPEM_L 0 | |
87 | ||
88 | /* | |
89 | * ASPEED_PTCR_DUTY_CTRL/1/2/3 : 0x08/0x0C/0x48/0x4C - PWM-FAN duty control | |
90 | * 0/1/2/3 register | |
91 | */ | |
92 | #define DUTY_CTRL_PWM2_FALL_POINT 24 | |
93 | #define DUTY_CTRL_PWM2_RISE_POINT 16 | |
94 | #define DUTY_CTRL_PWM2_RISE_FALL_MASK GENMASK(31, 16) | |
95 | #define DUTY_CTRL_PWM1_FALL_POINT 8 | |
96 | #define DUTY_CTRL_PWM1_RISE_POINT 0 | |
97 | #define DUTY_CTRL_PWM1_RISE_FALL_MASK GENMASK(15, 0) | |
98 | ||
99 | /* ASPEED_PTCR_TYPEM_CTRL : 0x10/0x18/0x50 - Type M/N/O Ctrl 0 Register */ | |
100 | #define TYPE_CTRL_FAN_MASK (GENMASK(5, 1) | GENMASK(31, 16)) | |
101 | #define TYPE_CTRL_FAN1_MASK GENMASK(31, 0) | |
102 | #define TYPE_CTRL_FAN_PERIOD 16 | |
103 | #define TYPE_CTRL_FAN_MODE 4 | |
104 | #define TYPE_CTRL_FAN_DIVISION 1 | |
105 | #define TYPE_CTRL_FAN_TYPE_EN 1 | |
106 | ||
107 | /* ASPEED_PTCR_TACH_SOURCE : 0x20/0x60 - Tach Source Register */ | |
108 | /* bit [0,1] at 0x20, bit [2] at 0x60 */ | |
109 | #define TACH_PWM_SOURCE_BIT01(x) ((x) * 2) | |
110 | #define TACH_PWM_SOURCE_BIT2(x) ((x) * 2) | |
111 | #define TACH_PWM_SOURCE_MASK_BIT01(x) (0x3 << ((x) * 2)) | |
112 | #define TACH_PWM_SOURCE_MASK_BIT2(x) BIT((x) * 2) | |
113 | ||
114 | /* ASPEED_PTCR_RESULT : 0x2c - Result Register */ | |
115 | #define RESULT_STATUS_MASK BIT(31) | |
116 | #define RESULT_VALUE_MASK 0xfffff | |
117 | ||
118 | /* ASPEED_PTCR_CTRL_EXT : 0x40 - General Control Extension #1 Register */ | |
119 | #define ASPEED_PTCR_CTRL_SET_PWMH_TYPE_PART1 15 | |
120 | #define ASPEED_PTCR_CTRL_SET_PWMH_TYPE_PART2 6 | |
121 | #define ASPEED_PTCR_CTRL_SET_PWMH_TYPE_MASK (BIT(7) | BIT(15)) | |
122 | ||
123 | #define ASPEED_PTCR_CTRL_SET_PWMG_TYPE_PART1 14 | |
124 | #define ASPEED_PTCR_CTRL_SET_PWMG_TYPE_PART2 5 | |
125 | #define ASPEED_PTCR_CTRL_SET_PWMG_TYPE_MASK (BIT(6) | BIT(14)) | |
126 | ||
127 | #define ASPEED_PTCR_CTRL_SET_PWMF_TYPE_PART1 13 | |
128 | #define ASPEED_PTCR_CTRL_SET_PWMF_TYPE_PART2 4 | |
129 | #define ASPEED_PTCR_CTRL_SET_PWMF_TYPE_MASK (BIT(5) | BIT(13)) | |
130 | ||
131 | #define ASPEED_PTCR_CTRL_SET_PWME_TYPE_PART1 12 | |
132 | #define ASPEED_PTCR_CTRL_SET_PWME_TYPE_PART2 3 | |
133 | #define ASPEED_PTCR_CTRL_SET_PWME_TYPE_MASK (BIT(4) | BIT(12)) | |
134 | ||
135 | #define ASPEED_PTCR_CTRL_PWMH_EN BIT(11) | |
136 | #define ASPEED_PTCR_CTRL_PWMG_EN BIT(10) | |
137 | #define ASPEED_PTCR_CTRL_PWMF_EN BIT(9) | |
138 | #define ASPEED_PTCR_CTRL_PWME_EN BIT(8) | |
139 | ||
140 | /* ASPEED_PTCR_CLK_EXT_CTRL : 0x44 - Clock Control Extension #1 Register */ | |
141 | /* TYPE O */ | |
142 | #define ASPEED_PTCR_CLK_CTRL_TYPEO_MASK GENMASK(15, 0) | |
143 | #define ASPEED_PTCR_CLK_CTRL_TYPEO_UNIT 8 | |
144 | #define ASPEED_PTCR_CLK_CTRL_TYPEO_H 4 | |
145 | #define ASPEED_PTCR_CLK_CTRL_TYPEO_L 0 | |
146 | ||
147 | #define PWM_MAX 255 | |
148 | ||
1e276292 PV |
149 | #define BOTH_EDGES 0x02 /* 10b */ |
150 | ||
2d7a548a JRN |
151 | #define M_PWM_DIV_H 0x00 |
152 | #define M_PWM_DIV_L 0x05 | |
153 | #define M_PWM_PERIOD 0x5F | |
154 | #define M_TACH_CLK_DIV 0x00 | |
1e276292 PV |
155 | /* |
156 | * 5:4 Type N fan tach mode selection bit: | |
157 | * 00: falling | |
158 | * 01: rising | |
159 | * 10: both | |
160 | * 11: reserved. | |
161 | */ | |
162 | #define M_TACH_MODE 0x02 /* 10b */ | |
ece0c03a | 163 | #define M_TACH_UNIT 0x00c0 |
2d7a548a JRN |
164 | #define INIT_FAN_CTRL 0xFF |
165 | ||
44b41366 PV |
166 | /* How long we sleep in us while waiting for an RPM result. */ |
167 | #define ASPEED_RPM_STATUS_SLEEP_USEC 500 | |
168 | ||
2d7a548a JRN |
169 | struct aspeed_pwm_tacho_data { |
170 | struct regmap *regmap; | |
171 | unsigned long clk_freq; | |
172 | bool pwm_present[8]; | |
173 | bool fan_tach_present[16]; | |
174 | u8 type_pwm_clock_unit[3]; | |
175 | u8 type_pwm_clock_division_h[3]; | |
176 | u8 type_pwm_clock_division_l[3]; | |
177 | u8 type_fan_tach_clock_division[3]; | |
1e276292 | 178 | u8 type_fan_tach_mode[3]; |
2d7a548a JRN |
179 | u16 type_fan_tach_unit[3]; |
180 | u8 pwm_port_type[8]; | |
181 | u8 pwm_port_fan_ctrl[8]; | |
182 | u8 fan_tach_ch_source[16]; | |
183 | const struct attribute_group *groups[3]; | |
184 | }; | |
185 | ||
186 | enum type { TYPEM, TYPEN, TYPEO }; | |
187 | ||
188 | struct type_params { | |
189 | u32 l_value; | |
190 | u32 h_value; | |
191 | u32 unit_value; | |
192 | u32 clk_ctrl_mask; | |
193 | u32 clk_ctrl_reg; | |
194 | u32 ctrl_reg; | |
195 | u32 ctrl_reg1; | |
196 | }; | |
197 | ||
198 | static const struct type_params type_params[] = { | |
199 | [TYPEM] = { | |
200 | .l_value = ASPEED_PTCR_CLK_CTRL_TYPEM_L, | |
201 | .h_value = ASPEED_PTCR_CLK_CTRL_TYPEM_H, | |
202 | .unit_value = ASPEED_PTCR_CLK_CTRL_TYPEM_UNIT, | |
203 | .clk_ctrl_mask = ASPEED_PTCR_CLK_CTRL_TYPEM_MASK, | |
204 | .clk_ctrl_reg = ASPEED_PTCR_CLK_CTRL, | |
205 | .ctrl_reg = ASPEED_PTCR_TYPEM_CTRL, | |
206 | .ctrl_reg1 = ASPEED_PTCR_TYPEM_CTRL1, | |
207 | }, | |
208 | [TYPEN] = { | |
209 | .l_value = ASPEED_PTCR_CLK_CTRL_TYPEN_L, | |
210 | .h_value = ASPEED_PTCR_CLK_CTRL_TYPEN_H, | |
211 | .unit_value = ASPEED_PTCR_CLK_CTRL_TYPEN_UNIT, | |
212 | .clk_ctrl_mask = ASPEED_PTCR_CLK_CTRL_TYPEN_MASK, | |
213 | .clk_ctrl_reg = ASPEED_PTCR_CLK_CTRL, | |
214 | .ctrl_reg = ASPEED_PTCR_TYPEN_CTRL, | |
215 | .ctrl_reg1 = ASPEED_PTCR_TYPEN_CTRL1, | |
216 | }, | |
217 | [TYPEO] = { | |
218 | .l_value = ASPEED_PTCR_CLK_CTRL_TYPEO_L, | |
219 | .h_value = ASPEED_PTCR_CLK_CTRL_TYPEO_H, | |
220 | .unit_value = ASPEED_PTCR_CLK_CTRL_TYPEO_UNIT, | |
221 | .clk_ctrl_mask = ASPEED_PTCR_CLK_CTRL_TYPEO_MASK, | |
222 | .clk_ctrl_reg = ASPEED_PTCR_CLK_CTRL_EXT, | |
223 | .ctrl_reg = ASPEED_PTCR_TYPEO_CTRL, | |
224 | .ctrl_reg1 = ASPEED_PTCR_TYPEO_CTRL1, | |
225 | } | |
226 | }; | |
227 | ||
228 | enum pwm_port { PWMA, PWMB, PWMC, PWMD, PWME, PWMF, PWMG, PWMH }; | |
229 | ||
230 | struct pwm_port_params { | |
231 | u32 pwm_en; | |
232 | u32 ctrl_reg; | |
233 | u32 type_part1; | |
234 | u32 type_part2; | |
235 | u32 type_mask; | |
236 | u32 duty_ctrl_rise_point; | |
237 | u32 duty_ctrl_fall_point; | |
238 | u32 duty_ctrl_reg; | |
239 | u32 duty_ctrl_rise_fall_mask; | |
240 | }; | |
241 | ||
242 | static const struct pwm_port_params pwm_port_params[] = { | |
243 | [PWMA] = { | |
244 | .pwm_en = ASPEED_PTCR_CTRL_PWMA_EN, | |
245 | .ctrl_reg = ASPEED_PTCR_CTRL, | |
246 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMA_TYPE_PART1, | |
247 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMA_TYPE_PART2, | |
248 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMA_TYPE_MASK, | |
249 | .duty_ctrl_rise_point = DUTY_CTRL_PWM1_RISE_POINT, | |
250 | .duty_ctrl_fall_point = DUTY_CTRL_PWM1_FALL_POINT, | |
251 | .duty_ctrl_reg = ASPEED_PTCR_DUTY0_CTRL, | |
252 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM1_RISE_FALL_MASK, | |
253 | }, | |
254 | [PWMB] = { | |
255 | .pwm_en = ASPEED_PTCR_CTRL_PWMB_EN, | |
256 | .ctrl_reg = ASPEED_PTCR_CTRL, | |
257 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMB_TYPE_PART1, | |
258 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMB_TYPE_PART2, | |
259 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMB_TYPE_MASK, | |
260 | .duty_ctrl_rise_point = DUTY_CTRL_PWM2_RISE_POINT, | |
261 | .duty_ctrl_fall_point = DUTY_CTRL_PWM2_FALL_POINT, | |
262 | .duty_ctrl_reg = ASPEED_PTCR_DUTY0_CTRL, | |
263 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM2_RISE_FALL_MASK, | |
264 | }, | |
265 | [PWMC] = { | |
266 | .pwm_en = ASPEED_PTCR_CTRL_PWMC_EN, | |
267 | .ctrl_reg = ASPEED_PTCR_CTRL, | |
268 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMC_TYPE_PART1, | |
269 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMC_TYPE_PART2, | |
270 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMC_TYPE_MASK, | |
271 | .duty_ctrl_rise_point = DUTY_CTRL_PWM1_RISE_POINT, | |
272 | .duty_ctrl_fall_point = DUTY_CTRL_PWM1_FALL_POINT, | |
273 | .duty_ctrl_reg = ASPEED_PTCR_DUTY1_CTRL, | |
274 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM1_RISE_FALL_MASK, | |
275 | }, | |
276 | [PWMD] = { | |
277 | .pwm_en = ASPEED_PTCR_CTRL_PWMD_EN, | |
278 | .ctrl_reg = ASPEED_PTCR_CTRL, | |
279 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMD_TYPE_PART1, | |
280 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMD_TYPE_PART2, | |
281 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMD_TYPE_MASK, | |
282 | .duty_ctrl_rise_point = DUTY_CTRL_PWM2_RISE_POINT, | |
283 | .duty_ctrl_fall_point = DUTY_CTRL_PWM2_FALL_POINT, | |
284 | .duty_ctrl_reg = ASPEED_PTCR_DUTY1_CTRL, | |
285 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM2_RISE_FALL_MASK, | |
286 | }, | |
287 | [PWME] = { | |
288 | .pwm_en = ASPEED_PTCR_CTRL_PWME_EN, | |
289 | .ctrl_reg = ASPEED_PTCR_CTRL_EXT, | |
290 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWME_TYPE_PART1, | |
291 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWME_TYPE_PART2, | |
292 | .type_mask = ASPEED_PTCR_CTRL_SET_PWME_TYPE_MASK, | |
293 | .duty_ctrl_rise_point = DUTY_CTRL_PWM1_RISE_POINT, | |
294 | .duty_ctrl_fall_point = DUTY_CTRL_PWM1_FALL_POINT, | |
295 | .duty_ctrl_reg = ASPEED_PTCR_DUTY2_CTRL, | |
296 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM1_RISE_FALL_MASK, | |
297 | }, | |
298 | [PWMF] = { | |
299 | .pwm_en = ASPEED_PTCR_CTRL_PWMF_EN, | |
300 | .ctrl_reg = ASPEED_PTCR_CTRL_EXT, | |
301 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMF_TYPE_PART1, | |
302 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMF_TYPE_PART2, | |
303 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMF_TYPE_MASK, | |
304 | .duty_ctrl_rise_point = DUTY_CTRL_PWM2_RISE_POINT, | |
305 | .duty_ctrl_fall_point = DUTY_CTRL_PWM2_FALL_POINT, | |
306 | .duty_ctrl_reg = ASPEED_PTCR_DUTY2_CTRL, | |
307 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM2_RISE_FALL_MASK, | |
308 | }, | |
309 | [PWMG] = { | |
310 | .pwm_en = ASPEED_PTCR_CTRL_PWMG_EN, | |
311 | .ctrl_reg = ASPEED_PTCR_CTRL_EXT, | |
312 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMG_TYPE_PART1, | |
313 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMG_TYPE_PART2, | |
314 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMG_TYPE_MASK, | |
315 | .duty_ctrl_rise_point = DUTY_CTRL_PWM1_RISE_POINT, | |
316 | .duty_ctrl_fall_point = DUTY_CTRL_PWM1_FALL_POINT, | |
317 | .duty_ctrl_reg = ASPEED_PTCR_DUTY3_CTRL, | |
318 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM1_RISE_FALL_MASK, | |
319 | }, | |
320 | [PWMH] = { | |
321 | .pwm_en = ASPEED_PTCR_CTRL_PWMH_EN, | |
322 | .ctrl_reg = ASPEED_PTCR_CTRL_EXT, | |
323 | .type_part1 = ASPEED_PTCR_CTRL_SET_PWMH_TYPE_PART1, | |
324 | .type_part2 = ASPEED_PTCR_CTRL_SET_PWMH_TYPE_PART2, | |
325 | .type_mask = ASPEED_PTCR_CTRL_SET_PWMH_TYPE_MASK, | |
326 | .duty_ctrl_rise_point = DUTY_CTRL_PWM2_RISE_POINT, | |
327 | .duty_ctrl_fall_point = DUTY_CTRL_PWM2_FALL_POINT, | |
328 | .duty_ctrl_reg = ASPEED_PTCR_DUTY3_CTRL, | |
329 | .duty_ctrl_rise_fall_mask = DUTY_CTRL_PWM2_RISE_FALL_MASK, | |
330 | } | |
331 | }; | |
332 | ||
333 | static int regmap_aspeed_pwm_tacho_reg_write(void *context, unsigned int reg, | |
334 | unsigned int val) | |
335 | { | |
336 | void __iomem *regs = (void __iomem *)context; | |
337 | ||
338 | writel(val, regs + reg); | |
339 | return 0; | |
340 | } | |
341 | ||
342 | static int regmap_aspeed_pwm_tacho_reg_read(void *context, unsigned int reg, | |
343 | unsigned int *val) | |
344 | { | |
345 | void __iomem *regs = (void __iomem *)context; | |
346 | ||
347 | *val = readl(regs + reg); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | static const struct regmap_config aspeed_pwm_tacho_regmap_config = { | |
352 | .reg_bits = 32, | |
353 | .val_bits = 32, | |
354 | .reg_stride = 4, | |
355 | .max_register = ASPEED_PTCR_TYPEO_LIMIT, | |
356 | .reg_write = regmap_aspeed_pwm_tacho_reg_write, | |
357 | .reg_read = regmap_aspeed_pwm_tacho_reg_read, | |
358 | .fast_io = true, | |
359 | }; | |
360 | ||
361 | static void aspeed_set_clock_enable(struct regmap *regmap, bool val) | |
362 | { | |
363 | regmap_update_bits(regmap, ASPEED_PTCR_CTRL, | |
364 | ASPEED_PTCR_CTRL_CLK_EN, | |
365 | val ? ASPEED_PTCR_CTRL_CLK_EN : 0); | |
366 | } | |
367 | ||
368 | static void aspeed_set_clock_source(struct regmap *regmap, int val) | |
369 | { | |
370 | regmap_update_bits(regmap, ASPEED_PTCR_CTRL, | |
371 | ASPEED_PTCR_CTRL_CLK_SRC, | |
372 | val ? ASPEED_PTCR_CTRL_CLK_SRC : 0); | |
373 | } | |
374 | ||
375 | static void aspeed_set_pwm_clock_values(struct regmap *regmap, u8 type, | |
376 | u8 div_high, u8 div_low, u8 unit) | |
377 | { | |
378 | u32 reg_value = ((div_high << type_params[type].h_value) | | |
379 | (div_low << type_params[type].l_value) | | |
380 | (unit << type_params[type].unit_value)); | |
381 | ||
382 | regmap_update_bits(regmap, type_params[type].clk_ctrl_reg, | |
383 | type_params[type].clk_ctrl_mask, reg_value); | |
384 | } | |
385 | ||
386 | static void aspeed_set_pwm_port_enable(struct regmap *regmap, u8 pwm_port, | |
387 | bool enable) | |
388 | { | |
389 | regmap_update_bits(regmap, pwm_port_params[pwm_port].ctrl_reg, | |
390 | pwm_port_params[pwm_port].pwm_en, | |
391 | enable ? pwm_port_params[pwm_port].pwm_en : 0); | |
392 | } | |
393 | ||
394 | static void aspeed_set_pwm_port_type(struct regmap *regmap, | |
395 | u8 pwm_port, u8 type) | |
396 | { | |
397 | u32 reg_value = (type & 0x1) << pwm_port_params[pwm_port].type_part1; | |
398 | ||
399 | reg_value |= (type & 0x2) << pwm_port_params[pwm_port].type_part2; | |
400 | ||
401 | regmap_update_bits(regmap, pwm_port_params[pwm_port].ctrl_reg, | |
402 | pwm_port_params[pwm_port].type_mask, reg_value); | |
403 | } | |
404 | ||
405 | static void aspeed_set_pwm_port_duty_rising_falling(struct regmap *regmap, | |
406 | u8 pwm_port, u8 rising, | |
407 | u8 falling) | |
408 | { | |
409 | u32 reg_value = (rising << | |
410 | pwm_port_params[pwm_port].duty_ctrl_rise_point); | |
411 | reg_value |= (falling << | |
412 | pwm_port_params[pwm_port].duty_ctrl_fall_point); | |
413 | ||
414 | regmap_update_bits(regmap, pwm_port_params[pwm_port].duty_ctrl_reg, | |
415 | pwm_port_params[pwm_port].duty_ctrl_rise_fall_mask, | |
416 | reg_value); | |
417 | } | |
418 | ||
419 | static void aspeed_set_tacho_type_enable(struct regmap *regmap, u8 type, | |
420 | bool enable) | |
421 | { | |
422 | regmap_update_bits(regmap, type_params[type].ctrl_reg, | |
423 | TYPE_CTRL_FAN_TYPE_EN, | |
424 | enable ? TYPE_CTRL_FAN_TYPE_EN : 0); | |
425 | } | |
426 | ||
427 | static void aspeed_set_tacho_type_values(struct regmap *regmap, u8 type, | |
428 | u8 mode, u16 unit, u8 division) | |
429 | { | |
430 | u32 reg_value = ((mode << TYPE_CTRL_FAN_MODE) | | |
431 | (unit << TYPE_CTRL_FAN_PERIOD) | | |
432 | (division << TYPE_CTRL_FAN_DIVISION)); | |
433 | ||
434 | regmap_update_bits(regmap, type_params[type].ctrl_reg, | |
435 | TYPE_CTRL_FAN_MASK, reg_value); | |
436 | regmap_update_bits(regmap, type_params[type].ctrl_reg1, | |
437 | TYPE_CTRL_FAN1_MASK, unit << 16); | |
438 | } | |
439 | ||
440 | static void aspeed_set_fan_tach_ch_enable(struct regmap *regmap, u8 fan_tach_ch, | |
441 | bool enable) | |
442 | { | |
443 | regmap_update_bits(regmap, ASPEED_PTCR_CTRL, | |
444 | ASPEED_PTCR_CTRL_FAN_NUM_EN(fan_tach_ch), | |
445 | enable ? | |
446 | ASPEED_PTCR_CTRL_FAN_NUM_EN(fan_tach_ch) : 0); | |
447 | } | |
448 | ||
449 | static void aspeed_set_fan_tach_ch_source(struct regmap *regmap, u8 fan_tach_ch, | |
450 | u8 fan_tach_ch_source) | |
451 | { | |
452 | u32 reg_value1 = ((fan_tach_ch_source & 0x3) << | |
453 | TACH_PWM_SOURCE_BIT01(fan_tach_ch)); | |
454 | u32 reg_value2 = (((fan_tach_ch_source & 0x4) >> 2) << | |
455 | TACH_PWM_SOURCE_BIT2(fan_tach_ch)); | |
456 | ||
457 | regmap_update_bits(regmap, ASPEED_PTCR_TACH_SOURCE, | |
458 | TACH_PWM_SOURCE_MASK_BIT01(fan_tach_ch), | |
459 | reg_value1); | |
460 | ||
461 | regmap_update_bits(regmap, ASPEED_PTCR_TACH_SOURCE_EXT, | |
462 | TACH_PWM_SOURCE_MASK_BIT2(fan_tach_ch), | |
463 | reg_value2); | |
464 | } | |
465 | ||
466 | static void aspeed_set_pwm_port_fan_ctrl(struct aspeed_pwm_tacho_data *priv, | |
467 | u8 index, u8 fan_ctrl) | |
468 | { | |
469 | u16 period, dc_time_on; | |
470 | ||
471 | period = priv->type_pwm_clock_unit[priv->pwm_port_type[index]]; | |
472 | period += 1; | |
473 | dc_time_on = (fan_ctrl * period) / PWM_MAX; | |
474 | ||
475 | if (dc_time_on == 0) { | |
476 | aspeed_set_pwm_port_enable(priv->regmap, index, false); | |
477 | } else { | |
478 | if (dc_time_on == period) | |
479 | dc_time_on = 0; | |
480 | ||
481 | aspeed_set_pwm_port_duty_rising_falling(priv->regmap, index, 0, | |
482 | dc_time_on); | |
483 | aspeed_set_pwm_port_enable(priv->regmap, index, true); | |
484 | } | |
485 | } | |
486 | ||
487 | static u32 aspeed_get_fan_tach_ch_measure_period(struct aspeed_pwm_tacho_data | |
488 | *priv, u8 type) | |
489 | { | |
490 | u32 clk; | |
491 | u16 tacho_unit; | |
492 | u8 clk_unit, div_h, div_l, tacho_div; | |
493 | ||
494 | clk = priv->clk_freq; | |
495 | clk_unit = priv->type_pwm_clock_unit[type]; | |
496 | div_h = priv->type_pwm_clock_division_h[type]; | |
497 | div_h = 0x1 << div_h; | |
498 | div_l = priv->type_pwm_clock_division_l[type]; | |
499 | if (div_l == 0) | |
500 | div_l = 1; | |
501 | else | |
502 | div_l = div_l * 2; | |
503 | ||
504 | tacho_unit = priv->type_fan_tach_unit[type]; | |
505 | tacho_div = priv->type_fan_tach_clock_division[type]; | |
506 | ||
507 | tacho_div = 0x4 << (tacho_div * 2); | |
508 | return clk / (clk_unit * div_h * div_l * tacho_div * tacho_unit); | |
509 | } | |
510 | ||
7ed1c5e5 | 511 | static int aspeed_get_fan_tach_ch_rpm(struct aspeed_pwm_tacho_data *priv, |
2d7a548a JRN |
512 | u8 fan_tach_ch) |
513 | { | |
44b41366 | 514 | u32 raw_data, tach_div, clk_source, msec, usec, val; |
1e276292 | 515 | u8 fan_tach_ch_source, type, mode, both; |
44b41366 | 516 | int ret; |
2d7a548a JRN |
517 | |
518 | regmap_write(priv->regmap, ASPEED_PTCR_TRIGGER, 0); | |
519 | regmap_write(priv->regmap, ASPEED_PTCR_TRIGGER, 0x1 << fan_tach_ch); | |
520 | ||
521 | fan_tach_ch_source = priv->fan_tach_ch_source[fan_tach_ch]; | |
522 | type = priv->pwm_port_type[fan_tach_ch_source]; | |
523 | ||
44b41366 PV |
524 | msec = (1000 / aspeed_get_fan_tach_ch_measure_period(priv, type)); |
525 | usec = msec * 1000; | |
526 | ||
527 | ret = regmap_read_poll_timeout( | |
528 | priv->regmap, | |
529 | ASPEED_PTCR_RESULT, | |
530 | val, | |
531 | (val & RESULT_STATUS_MASK), | |
532 | ASPEED_RPM_STATUS_SLEEP_USEC, | |
533 | usec); | |
2d7a548a | 534 | |
44b41366 PV |
535 | /* return -ETIMEDOUT if we didn't get an answer. */ |
536 | if (ret) | |
537 | return ret; | |
7ed1c5e5 | 538 | |
2d7a548a JRN |
539 | raw_data = val & RESULT_VALUE_MASK; |
540 | tach_div = priv->type_fan_tach_clock_division[type]; | |
1e276292 PV |
541 | /* |
542 | * We need the mode to determine if the raw_data is double (from | |
543 | * counting both edges). | |
544 | */ | |
545 | mode = priv->type_fan_tach_mode[type]; | |
546 | both = (mode & BOTH_EDGES) ? 1 : 0; | |
547 | ||
548 | tach_div = (0x4 << both) << (tach_div * 2); | |
2d7a548a JRN |
549 | clk_source = priv->clk_freq; |
550 | ||
551 | if (raw_data == 0) | |
552 | return 0; | |
553 | ||
554 | return (clk_source * 60) / (2 * raw_data * tach_div); | |
555 | } | |
556 | ||
557 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, | |
558 | const char *buf, size_t count) | |
559 | { | |
560 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
561 | int index = sensor_attr->index; | |
562 | int ret; | |
563 | struct aspeed_pwm_tacho_data *priv = dev_get_drvdata(dev); | |
564 | long fan_ctrl; | |
565 | ||
566 | ret = kstrtol(buf, 10, &fan_ctrl); | |
567 | if (ret != 0) | |
568 | return ret; | |
569 | ||
570 | if (fan_ctrl < 0 || fan_ctrl > PWM_MAX) | |
571 | return -EINVAL; | |
572 | ||
573 | if (priv->pwm_port_fan_ctrl[index] == fan_ctrl) | |
574 | return count; | |
575 | ||
576 | priv->pwm_port_fan_ctrl[index] = fan_ctrl; | |
577 | aspeed_set_pwm_port_fan_ctrl(priv, index, fan_ctrl); | |
578 | ||
579 | return count; | |
580 | } | |
581 | ||
582 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, | |
583 | char *buf) | |
584 | { | |
585 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
586 | int index = sensor_attr->index; | |
587 | struct aspeed_pwm_tacho_data *priv = dev_get_drvdata(dev); | |
588 | ||
589 | return sprintf(buf, "%u\n", priv->pwm_port_fan_ctrl[index]); | |
590 | } | |
591 | ||
592 | static ssize_t show_rpm(struct device *dev, struct device_attribute *attr, | |
593 | char *buf) | |
594 | { | |
595 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
596 | int index = sensor_attr->index; | |
7ed1c5e5 | 597 | int rpm; |
2d7a548a JRN |
598 | struct aspeed_pwm_tacho_data *priv = dev_get_drvdata(dev); |
599 | ||
600 | rpm = aspeed_get_fan_tach_ch_rpm(priv, index); | |
7ed1c5e5 PV |
601 | if (rpm < 0) |
602 | return rpm; | |
2d7a548a | 603 | |
7ed1c5e5 | 604 | return sprintf(buf, "%d\n", rpm); |
2d7a548a JRN |
605 | } |
606 | ||
607 | static umode_t pwm_is_visible(struct kobject *kobj, | |
608 | struct attribute *a, int index) | |
609 | { | |
610 | struct device *dev = container_of(kobj, struct device, kobj); | |
611 | struct aspeed_pwm_tacho_data *priv = dev_get_drvdata(dev); | |
612 | ||
613 | if (!priv->pwm_present[index]) | |
614 | return 0; | |
615 | return a->mode; | |
616 | } | |
617 | ||
618 | static umode_t fan_dev_is_visible(struct kobject *kobj, | |
619 | struct attribute *a, int index) | |
620 | { | |
621 | struct device *dev = container_of(kobj, struct device, kobj); | |
622 | struct aspeed_pwm_tacho_data *priv = dev_get_drvdata(dev); | |
623 | ||
624 | if (!priv->fan_tach_present[index]) | |
625 | return 0; | |
626 | return a->mode; | |
627 | } | |
628 | ||
2d7a548a | 629 | static SENSOR_DEVICE_ATTR(pwm1, 0644, |
5f348fa3 | 630 | show_pwm, set_pwm, 0); |
2d7a548a | 631 | static SENSOR_DEVICE_ATTR(pwm2, 0644, |
5f348fa3 | 632 | show_pwm, set_pwm, 1); |
2d7a548a | 633 | static SENSOR_DEVICE_ATTR(pwm3, 0644, |
5f348fa3 | 634 | show_pwm, set_pwm, 2); |
2d7a548a | 635 | static SENSOR_DEVICE_ATTR(pwm4, 0644, |
5f348fa3 | 636 | show_pwm, set_pwm, 3); |
2d7a548a | 637 | static SENSOR_DEVICE_ATTR(pwm5, 0644, |
5f348fa3 | 638 | show_pwm, set_pwm, 4); |
2d7a548a | 639 | static SENSOR_DEVICE_ATTR(pwm6, 0644, |
5f348fa3 | 640 | show_pwm, set_pwm, 5); |
2d7a548a | 641 | static SENSOR_DEVICE_ATTR(pwm7, 0644, |
5f348fa3 SS |
642 | show_pwm, set_pwm, 6); |
643 | static SENSOR_DEVICE_ATTR(pwm8, 0644, | |
2d7a548a JRN |
644 | show_pwm, set_pwm, 7); |
645 | static struct attribute *pwm_dev_attrs[] = { | |
2d7a548a JRN |
646 | &sensor_dev_attr_pwm1.dev_attr.attr, |
647 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
648 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
649 | &sensor_dev_attr_pwm4.dev_attr.attr, | |
650 | &sensor_dev_attr_pwm5.dev_attr.attr, | |
651 | &sensor_dev_attr_pwm6.dev_attr.attr, | |
652 | &sensor_dev_attr_pwm7.dev_attr.attr, | |
5f348fa3 | 653 | &sensor_dev_attr_pwm8.dev_attr.attr, |
2d7a548a JRN |
654 | NULL, |
655 | }; | |
656 | ||
657 | static const struct attribute_group pwm_dev_group = { | |
658 | .attrs = pwm_dev_attrs, | |
659 | .is_visible = pwm_is_visible, | |
660 | }; | |
661 | ||
2d7a548a | 662 | static SENSOR_DEVICE_ATTR(fan1_input, 0444, |
5f348fa3 | 663 | show_rpm, NULL, 0); |
2d7a548a | 664 | static SENSOR_DEVICE_ATTR(fan2_input, 0444, |
5f348fa3 | 665 | show_rpm, NULL, 1); |
2d7a548a | 666 | static SENSOR_DEVICE_ATTR(fan3_input, 0444, |
5f348fa3 | 667 | show_rpm, NULL, 2); |
2d7a548a | 668 | static SENSOR_DEVICE_ATTR(fan4_input, 0444, |
5f348fa3 | 669 | show_rpm, NULL, 3); |
2d7a548a | 670 | static SENSOR_DEVICE_ATTR(fan5_input, 0444, |
5f348fa3 | 671 | show_rpm, NULL, 4); |
2d7a548a | 672 | static SENSOR_DEVICE_ATTR(fan6_input, 0444, |
5f348fa3 | 673 | show_rpm, NULL, 5); |
2d7a548a | 674 | static SENSOR_DEVICE_ATTR(fan7_input, 0444, |
5f348fa3 | 675 | show_rpm, NULL, 6); |
2d7a548a | 676 | static SENSOR_DEVICE_ATTR(fan8_input, 0444, |
5f348fa3 | 677 | show_rpm, NULL, 7); |
2d7a548a | 678 | static SENSOR_DEVICE_ATTR(fan9_input, 0444, |
5f348fa3 | 679 | show_rpm, NULL, 8); |
2d7a548a | 680 | static SENSOR_DEVICE_ATTR(fan10_input, 0444, |
5f348fa3 | 681 | show_rpm, NULL, 9); |
2d7a548a | 682 | static SENSOR_DEVICE_ATTR(fan11_input, 0444, |
5f348fa3 | 683 | show_rpm, NULL, 10); |
2d7a548a | 684 | static SENSOR_DEVICE_ATTR(fan12_input, 0444, |
5f348fa3 | 685 | show_rpm, NULL, 11); |
2d7a548a | 686 | static SENSOR_DEVICE_ATTR(fan13_input, 0444, |
5f348fa3 | 687 | show_rpm, NULL, 12); |
2d7a548a | 688 | static SENSOR_DEVICE_ATTR(fan14_input, 0444, |
5f348fa3 | 689 | show_rpm, NULL, 13); |
2d7a548a | 690 | static SENSOR_DEVICE_ATTR(fan15_input, 0444, |
5f348fa3 SS |
691 | show_rpm, NULL, 14); |
692 | static SENSOR_DEVICE_ATTR(fan16_input, 0444, | |
2d7a548a JRN |
693 | show_rpm, NULL, 15); |
694 | static struct attribute *fan_dev_attrs[] = { | |
2d7a548a JRN |
695 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
696 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
697 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
698 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
699 | &sensor_dev_attr_fan5_input.dev_attr.attr, | |
700 | &sensor_dev_attr_fan6_input.dev_attr.attr, | |
701 | &sensor_dev_attr_fan7_input.dev_attr.attr, | |
702 | &sensor_dev_attr_fan8_input.dev_attr.attr, | |
703 | &sensor_dev_attr_fan9_input.dev_attr.attr, | |
704 | &sensor_dev_attr_fan10_input.dev_attr.attr, | |
705 | &sensor_dev_attr_fan11_input.dev_attr.attr, | |
706 | &sensor_dev_attr_fan12_input.dev_attr.attr, | |
707 | &sensor_dev_attr_fan13_input.dev_attr.attr, | |
708 | &sensor_dev_attr_fan14_input.dev_attr.attr, | |
709 | &sensor_dev_attr_fan15_input.dev_attr.attr, | |
5f348fa3 | 710 | &sensor_dev_attr_fan16_input.dev_attr.attr, |
2d7a548a JRN |
711 | NULL |
712 | }; | |
713 | ||
714 | static const struct attribute_group fan_dev_group = { | |
715 | .attrs = fan_dev_attrs, | |
716 | .is_visible = fan_dev_is_visible, | |
717 | }; | |
718 | ||
719 | /* | |
720 | * The clock type is type M : | |
721 | * The PWM frequency = 24MHz / (type M clock division L bit * | |
722 | * type M clock division H bit * (type M PWM period bit + 1)) | |
723 | */ | |
724 | static void aspeed_create_type(struct aspeed_pwm_tacho_data *priv) | |
725 | { | |
726 | priv->type_pwm_clock_division_h[TYPEM] = M_PWM_DIV_H; | |
727 | priv->type_pwm_clock_division_l[TYPEM] = M_PWM_DIV_L; | |
728 | priv->type_pwm_clock_unit[TYPEM] = M_PWM_PERIOD; | |
729 | aspeed_set_pwm_clock_values(priv->regmap, TYPEM, M_PWM_DIV_H, | |
730 | M_PWM_DIV_L, M_PWM_PERIOD); | |
731 | aspeed_set_tacho_type_enable(priv->regmap, TYPEM, true); | |
732 | priv->type_fan_tach_clock_division[TYPEM] = M_TACH_CLK_DIV; | |
733 | priv->type_fan_tach_unit[TYPEM] = M_TACH_UNIT; | |
1e276292 | 734 | priv->type_fan_tach_mode[TYPEM] = M_TACH_MODE; |
2d7a548a JRN |
735 | aspeed_set_tacho_type_values(priv->regmap, TYPEM, M_TACH_MODE, |
736 | M_TACH_UNIT, M_TACH_CLK_DIV); | |
737 | } | |
738 | ||
739 | static void aspeed_create_pwm_port(struct aspeed_pwm_tacho_data *priv, | |
740 | u8 pwm_port) | |
741 | { | |
742 | aspeed_set_pwm_port_enable(priv->regmap, pwm_port, true); | |
743 | priv->pwm_present[pwm_port] = true; | |
744 | ||
745 | priv->pwm_port_type[pwm_port] = TYPEM; | |
746 | aspeed_set_pwm_port_type(priv->regmap, pwm_port, TYPEM); | |
747 | ||
748 | priv->pwm_port_fan_ctrl[pwm_port] = INIT_FAN_CTRL; | |
749 | aspeed_set_pwm_port_fan_ctrl(priv, pwm_port, INIT_FAN_CTRL); | |
750 | } | |
751 | ||
752 | static void aspeed_create_fan_tach_channel(struct aspeed_pwm_tacho_data *priv, | |
753 | u8 *fan_tach_ch, | |
754 | int count, | |
755 | u8 pwm_source) | |
756 | { | |
757 | u8 val, index; | |
758 | ||
759 | for (val = 0; val < count; val++) { | |
760 | index = fan_tach_ch[val]; | |
761 | aspeed_set_fan_tach_ch_enable(priv->regmap, index, true); | |
762 | priv->fan_tach_present[index] = true; | |
763 | priv->fan_tach_ch_source[index] = pwm_source; | |
764 | aspeed_set_fan_tach_ch_source(priv->regmap, index, pwm_source); | |
765 | } | |
766 | } | |
767 | ||
768 | static int aspeed_create_fan(struct device *dev, | |
769 | struct device_node *child, | |
770 | struct aspeed_pwm_tacho_data *priv) | |
771 | { | |
772 | u8 *fan_tach_ch; | |
773 | u32 pwm_port; | |
774 | int ret, count; | |
775 | ||
776 | ret = of_property_read_u32(child, "reg", &pwm_port); | |
777 | if (ret) | |
778 | return ret; | |
779 | aspeed_create_pwm_port(priv, (u8)pwm_port); | |
780 | ||
781 | count = of_property_count_u8_elems(child, "aspeed,fan-tach-ch"); | |
782 | if (count < 1) | |
783 | return -EINVAL; | |
784 | fan_tach_ch = devm_kzalloc(dev, sizeof(*fan_tach_ch) * count, | |
785 | GFP_KERNEL); | |
786 | if (!fan_tach_ch) | |
787 | return -ENOMEM; | |
788 | ret = of_property_read_u8_array(child, "aspeed,fan-tach-ch", | |
789 | fan_tach_ch, count); | |
790 | if (ret) | |
791 | return ret; | |
792 | aspeed_create_fan_tach_channel(priv, fan_tach_ch, count, pwm_port); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
797 | static int aspeed_pwm_tacho_probe(struct platform_device *pdev) | |
798 | { | |
799 | struct device *dev = &pdev->dev; | |
800 | struct device_node *np, *child; | |
801 | struct aspeed_pwm_tacho_data *priv; | |
802 | void __iomem *regs; | |
803 | struct resource *res; | |
804 | struct device *hwmon; | |
805 | struct clk *clk; | |
806 | int ret; | |
807 | ||
808 | np = dev->of_node; | |
809 | ||
810 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
811 | if (!res) | |
812 | return -ENOENT; | |
813 | regs = devm_ioremap_resource(dev, res); | |
814 | if (IS_ERR(regs)) | |
815 | return PTR_ERR(regs); | |
816 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | |
817 | if (!priv) | |
818 | return -ENOMEM; | |
819 | priv->regmap = devm_regmap_init(dev, NULL, (__force void *)regs, | |
820 | &aspeed_pwm_tacho_regmap_config); | |
821 | if (IS_ERR(priv->regmap)) | |
822 | return PTR_ERR(priv->regmap); | |
823 | regmap_write(priv->regmap, ASPEED_PTCR_TACH_SOURCE, 0); | |
824 | regmap_write(priv->regmap, ASPEED_PTCR_TACH_SOURCE_EXT, 0); | |
825 | ||
826 | clk = devm_clk_get(dev, NULL); | |
827 | if (IS_ERR(clk)) | |
828 | return -ENODEV; | |
829 | priv->clk_freq = clk_get_rate(clk); | |
830 | aspeed_set_clock_enable(priv->regmap, true); | |
831 | aspeed_set_clock_source(priv->regmap, 0); | |
832 | ||
833 | aspeed_create_type(priv); | |
834 | ||
835 | for_each_child_of_node(np, child) { | |
836 | ret = aspeed_create_fan(dev, child, priv); | |
837 | of_node_put(child); | |
838 | if (ret) | |
839 | return ret; | |
840 | } | |
2d7a548a JRN |
841 | |
842 | priv->groups[0] = &pwm_dev_group; | |
843 | priv->groups[1] = &fan_dev_group; | |
844 | priv->groups[2] = NULL; | |
845 | hwmon = devm_hwmon_device_register_with_groups(dev, | |
846 | "aspeed_pwm_tacho", | |
847 | priv, priv->groups); | |
848 | return PTR_ERR_OR_ZERO(hwmon); | |
849 | } | |
850 | ||
851 | static const struct of_device_id of_pwm_tacho_match_table[] = { | |
852 | { .compatible = "aspeed,ast2400-pwm-tacho", }, | |
853 | { .compatible = "aspeed,ast2500-pwm-tacho", }, | |
854 | {}, | |
855 | }; | |
856 | MODULE_DEVICE_TABLE(of, of_pwm_tacho_match_table); | |
857 | ||
858 | static struct platform_driver aspeed_pwm_tacho_driver = { | |
859 | .probe = aspeed_pwm_tacho_probe, | |
860 | .driver = { | |
861 | .name = "aspeed_pwm_tacho", | |
862 | .of_match_table = of_pwm_tacho_match_table, | |
863 | }, | |
864 | }; | |
865 | ||
866 | module_platform_driver(aspeed_pwm_tacho_driver); | |
867 | ||
868 | MODULE_AUTHOR("Jaghathiswari Rankappagounder Natarajan <jaghu@google.com>"); | |
869 | MODULE_DESCRIPTION("ASPEED PWM and Fan Tacho device driver"); | |
870 | MODULE_LICENSE("GPL"); |