Commit | Line | Data |
---|---|---|
3f4110a4 TG |
1 | /* |
2 | * mrst.c: Intel Moorestown platform specific setup code | |
3 | * | |
4 | * (C) Copyright 2008 Intel Corporation | |
5 | * Author: Jacob Pan (jacob.jun.pan@intel.com) | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; version 2 | |
10 | * of the License. | |
11 | */ | |
1da4b1c6 FT |
12 | |
13 | #define pr_fmt(fmt) "mrst: " fmt | |
14 | ||
3f4110a4 | 15 | #include <linux/init.h> |
16ab5395 | 16 | #include <linux/kernel.h> |
efe3ed98 FT |
17 | #include <linux/interrupt.h> |
18 | #include <linux/scatterlist.h> | |
16ab5395 | 19 | #include <linux/sfi.h> |
1da4b1c6 FT |
20 | #include <linux/intel_pmic_gpio.h> |
21 | #include <linux/spi/spi.h> | |
22 | #include <linux/i2c.h> | |
23 | #include <linux/i2c/pca953x.h> | |
24 | #include <linux/gpio_keys.h> | |
25 | #include <linux/input.h> | |
26 | #include <linux/platform_device.h> | |
16ab5395 | 27 | #include <linux/irq.h> |
cf089455 | 28 | #include <linux/module.h> |
42c2544b | 29 | #include <linux/notifier.h> |
360545c1 | 30 | #include <linux/mfd/intel_msic.h> |
3f4110a4 TG |
31 | |
32 | #include <asm/setup.h> | |
16ab5395 JP |
33 | #include <asm/mpspec_def.h> |
34 | #include <asm/hw_irq.h> | |
35 | #include <asm/apic.h> | |
36 | #include <asm/io_apic.h> | |
5b78b672 | 37 | #include <asm/mrst.h> |
168202c7 | 38 | #include <asm/mrst-vrtc.h> |
5b78b672 JP |
39 | #include <asm/io.h> |
40 | #include <asm/i8259.h> | |
1da4b1c6 | 41 | #include <asm/intel_scu_ipc.h> |
3746c6b6 | 42 | #include <asm/apb_timer.h> |
cfb505a7 | 43 | #include <asm/reboot.h> |
3f4110a4 | 44 | |
a875c019 JP |
45 | /* |
46 | * the clockevent devices on Moorestown/Medfield can be APBT or LAPIC clock, | |
47 | * cmdline option x86_mrst_timer can be used to override the configuration | |
48 | * to prefer one or the other. | |
49 | * at runtime, there are basically three timer configurations: | |
50 | * 1. per cpu apbt clock only | |
51 | * 2. per cpu always-on lapic clocks only, this is Penwell/Medfield only | |
52 | * 3. per cpu lapic clock (C3STOP) and one apbt clock, with broadcast. | |
53 | * | |
54 | * by default (without cmdline option), platform code first detects cpu type | |
55 | * to see if we are on lincroft or penwell, then set up both lapic or apbt | |
56 | * clocks accordingly. | |
57 | * i.e. by default, medfield uses configuration #2, moorestown uses #1. | |
58 | * config #3 is supported but not recommended on medfield. | |
59 | * | |
60 | * rating and feature summary: | |
61 | * lapic (with C3STOP) --------- 100 | |
62 | * apbt (always-on) ------------ 110 | |
63 | * lapic (always-on,ARAT) ------ 150 | |
64 | */ | |
65 | ||
14671386 | 66 | __cpuinitdata enum mrst_timer_options mrst_timer_options; |
a875c019 | 67 | |
16ab5395 JP |
68 | static u32 sfi_mtimer_usage[SFI_MTMR_MAX_NUM]; |
69 | static struct sfi_timer_table_entry sfi_mtimer_array[SFI_MTMR_MAX_NUM]; | |
a75af580 PA |
70 | enum mrst_cpu_type __mrst_cpu_chip; |
71 | EXPORT_SYMBOL_GPL(__mrst_cpu_chip); | |
a0c173bd | 72 | |
16ab5395 JP |
73 | int sfi_mtimer_num; |
74 | ||
cf089455 FT |
75 | struct sfi_rtc_table_entry sfi_mrtc_array[SFI_MRTC_MAX]; |
76 | EXPORT_SYMBOL_GPL(sfi_mrtc_array); | |
77 | int sfi_mrtc_num; | |
78 | ||
48bc5562 JP |
79 | static void mrst_power_off(void) |
80 | { | |
81 | if (__mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT) | |
82 | intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 1); | |
83 | } | |
84 | ||
85 | static void mrst_reboot(void) | |
86 | { | |
87 | if (__mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT) | |
88 | intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 0); | |
89 | else | |
90 | intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0); | |
91 | } | |
92 | ||
16ab5395 JP |
93 | /* parse all the mtimer info to a static mtimer array */ |
94 | static int __init sfi_parse_mtmr(struct sfi_table_header *table) | |
95 | { | |
96 | struct sfi_table_simple *sb; | |
97 | struct sfi_timer_table_entry *pentry; | |
98 | struct mpc_intsrc mp_irq; | |
99 | int totallen; | |
100 | ||
101 | sb = (struct sfi_table_simple *)table; | |
102 | if (!sfi_mtimer_num) { | |
103 | sfi_mtimer_num = SFI_GET_NUM_ENTRIES(sb, | |
104 | struct sfi_timer_table_entry); | |
105 | pentry = (struct sfi_timer_table_entry *) sb->pentry; | |
106 | totallen = sfi_mtimer_num * sizeof(*pentry); | |
107 | memcpy(sfi_mtimer_array, pentry, totallen); | |
108 | } | |
109 | ||
1da4b1c6 | 110 | pr_debug("SFI MTIMER info (num = %d):\n", sfi_mtimer_num); |
16ab5395 JP |
111 | pentry = sfi_mtimer_array; |
112 | for (totallen = 0; totallen < sfi_mtimer_num; totallen++, pentry++) { | |
1da4b1c6 | 113 | pr_debug("timer[%d]: paddr = 0x%08x, freq = %dHz," |
16ab5395 JP |
114 | " irq = %d\n", totallen, (u32)pentry->phys_addr, |
115 | pentry->freq_hz, pentry->irq); | |
116 | if (!pentry->irq) | |
117 | continue; | |
9d90e49d | 118 | mp_irq.type = MP_INTSRC; |
16ab5395 JP |
119 | mp_irq.irqtype = mp_INT; |
120 | /* triggering mode edge bit 2-3, active high polarity bit 0-1 */ | |
121 | mp_irq.irqflag = 5; | |
9d90e49d | 122 | mp_irq.srcbus = MP_BUS_ISA; |
16ab5395 JP |
123 | mp_irq.srcbusirq = pentry->irq; /* IRQ */ |
124 | mp_irq.dstapic = MP_APIC_ALL; | |
125 | mp_irq.dstirq = pentry->irq; | |
2d8009ba | 126 | mp_save_irq(&mp_irq); |
16ab5395 JP |
127 | } |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | struct sfi_timer_table_entry *sfi_get_mtmr(int hint) | |
133 | { | |
134 | int i; | |
135 | if (hint < sfi_mtimer_num) { | |
136 | if (!sfi_mtimer_usage[hint]) { | |
137 | pr_debug("hint taken for timer %d irq %d\n",\ | |
138 | hint, sfi_mtimer_array[hint].irq); | |
139 | sfi_mtimer_usage[hint] = 1; | |
140 | return &sfi_mtimer_array[hint]; | |
141 | } | |
142 | } | |
143 | /* take the first timer available */ | |
144 | for (i = 0; i < sfi_mtimer_num;) { | |
145 | if (!sfi_mtimer_usage[i]) { | |
146 | sfi_mtimer_usage[i] = 1; | |
147 | return &sfi_mtimer_array[i]; | |
148 | } | |
149 | i++; | |
150 | } | |
151 | return NULL; | |
152 | } | |
153 | ||
154 | void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr) | |
155 | { | |
156 | int i; | |
157 | for (i = 0; i < sfi_mtimer_num;) { | |
158 | if (mtmr->irq == sfi_mtimer_array[i].irq) { | |
159 | sfi_mtimer_usage[i] = 0; | |
160 | return; | |
161 | } | |
162 | i++; | |
163 | } | |
164 | } | |
165 | ||
cf089455 FT |
166 | /* parse all the mrtc info to a global mrtc array */ |
167 | int __init sfi_parse_mrtc(struct sfi_table_header *table) | |
168 | { | |
169 | struct sfi_table_simple *sb; | |
170 | struct sfi_rtc_table_entry *pentry; | |
171 | struct mpc_intsrc mp_irq; | |
172 | ||
173 | int totallen; | |
174 | ||
175 | sb = (struct sfi_table_simple *)table; | |
176 | if (!sfi_mrtc_num) { | |
177 | sfi_mrtc_num = SFI_GET_NUM_ENTRIES(sb, | |
178 | struct sfi_rtc_table_entry); | |
179 | pentry = (struct sfi_rtc_table_entry *)sb->pentry; | |
180 | totallen = sfi_mrtc_num * sizeof(*pentry); | |
181 | memcpy(sfi_mrtc_array, pentry, totallen); | |
182 | } | |
183 | ||
1da4b1c6 | 184 | pr_debug("SFI RTC info (num = %d):\n", sfi_mrtc_num); |
cf089455 FT |
185 | pentry = sfi_mrtc_array; |
186 | for (totallen = 0; totallen < sfi_mrtc_num; totallen++, pentry++) { | |
1da4b1c6 | 187 | pr_debug("RTC[%d]: paddr = 0x%08x, irq = %d\n", |
cf089455 | 188 | totallen, (u32)pentry->phys_addr, pentry->irq); |
9d90e49d | 189 | mp_irq.type = MP_INTSRC; |
cf089455 | 190 | mp_irq.irqtype = mp_INT; |
6f207e9b | 191 | mp_irq.irqflag = 0xf; /* level trigger and active low */ |
9d90e49d | 192 | mp_irq.srcbus = MP_BUS_ISA; |
cf089455 FT |
193 | mp_irq.srcbusirq = pentry->irq; /* IRQ */ |
194 | mp_irq.dstapic = MP_APIC_ALL; | |
195 | mp_irq.dstirq = pentry->irq; | |
2d8009ba | 196 | mp_save_irq(&mp_irq); |
cf089455 FT |
197 | } |
198 | return 0; | |
199 | } | |
200 | ||
3746c6b6 JP |
201 | static unsigned long __init mrst_calibrate_tsc(void) |
202 | { | |
203 | unsigned long flags, fast_calibrate; | |
0a915326 DB |
204 | if (__mrst_cpu_chip == MRST_CPU_CHIP_PENWELL) { |
205 | u32 lo, hi, ratio, fsb; | |
206 | ||
207 | rdmsr(MSR_IA32_PERF_STATUS, lo, hi); | |
208 | pr_debug("IA32 perf status is 0x%x, 0x%0x\n", lo, hi); | |
209 | ratio = (hi >> 8) & 0x1f; | |
210 | pr_debug("ratio is %d\n", ratio); | |
211 | if (!ratio) { | |
212 | pr_err("read a zero ratio, should be incorrect!\n"); | |
213 | pr_err("force tsc ratio to 16 ...\n"); | |
214 | ratio = 16; | |
215 | } | |
216 | rdmsr(MSR_FSB_FREQ, lo, hi); | |
217 | if ((lo & 0x7) == 0x7) | |
218 | fsb = PENWELL_FSB_FREQ_83SKU; | |
219 | else | |
220 | fsb = PENWELL_FSB_FREQ_100SKU; | |
221 | fast_calibrate = ratio * fsb; | |
222 | pr_debug("read penwell tsc %lu khz\n", fast_calibrate); | |
223 | lapic_timer_frequency = fsb * 1000 / HZ; | |
224 | /* mark tsc clocksource as reliable */ | |
225 | set_cpu_cap(&boot_cpu_data, X86_FEATURE_TSC_RELIABLE); | |
226 | } else { | |
227 | local_irq_save(flags); | |
228 | fast_calibrate = apbt_quick_calibrate(); | |
229 | local_irq_restore(flags); | |
230 | } | |
231 | ||
3746c6b6 JP |
232 | if (fast_calibrate) |
233 | return fast_calibrate; | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
8fab6af2 | 238 | static void __init mrst_time_init(void) |
3746c6b6 | 239 | { |
7f05dec3 | 240 | sfi_table_parse(SFI_SIG_MTMR, NULL, NULL, sfi_parse_mtmr); |
a875c019 JP |
241 | switch (mrst_timer_options) { |
242 | case MRST_TIMER_APBT_ONLY: | |
243 | break; | |
244 | case MRST_TIMER_LAPIC_APBT: | |
245 | x86_init.timers.setup_percpu_clockev = setup_boot_APIC_clock; | |
246 | x86_cpuinit.setup_percpu_clockev = setup_secondary_APIC_clock; | |
247 | break; | |
248 | default: | |
249 | if (!boot_cpu_has(X86_FEATURE_ARAT)) | |
250 | break; | |
251 | x86_init.timers.setup_percpu_clockev = setup_boot_APIC_clock; | |
252 | x86_cpuinit.setup_percpu_clockev = setup_secondary_APIC_clock; | |
253 | return; | |
254 | } | |
255 | /* we need at least one APB timer */ | |
3746c6b6 JP |
256 | pre_init_apic_IRQ0(); |
257 | apbt_time_init(); | |
258 | } | |
259 | ||
8fab6af2 | 260 | static void __cpuinit mrst_arch_setup(void) |
3746c6b6 | 261 | { |
a0c173bd | 262 | if (boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 0x27) |
a75af580 | 263 | __mrst_cpu_chip = MRST_CPU_CHIP_PENWELL; |
a0c173bd | 264 | else if (boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 0x26) |
a75af580 | 265 | __mrst_cpu_chip = MRST_CPU_CHIP_LINCROFT; |
a0c173bd JP |
266 | else { |
267 | pr_err("Unknown Moorestown CPU (%d:%d), default to Lincroft\n", | |
268 | boot_cpu_data.x86, boot_cpu_data.x86_model); | |
a75af580 | 269 | __mrst_cpu_chip = MRST_CPU_CHIP_LINCROFT; |
a0c173bd JP |
270 | } |
271 | pr_debug("Moorestown CPU %s identified\n", | |
a75af580 | 272 | (__mrst_cpu_chip == MRST_CPU_CHIP_LINCROFT) ? |
a0c173bd JP |
273 | "Lincroft" : "Penwell"); |
274 | } | |
3746c6b6 | 275 | |
6d2cce62 FT |
276 | /* MID systems don't have i8042 controller */ |
277 | static int mrst_i8042_detect(void) | |
278 | { | |
279 | return 0; | |
280 | } | |
281 | ||
064a59b6 JP |
282 | /* |
283 | * Moorestown does not have external NMI source nor port 0x61 to report | |
284 | * NMI status. The possible NMI sources are from pmu as a result of NMI | |
285 | * watchdog or lock debug. Reading io port 0x61 results in 0xff which | |
286 | * misled NMI handler. | |
287 | */ | |
288 | static unsigned char mrst_get_nmi_reason(void) | |
289 | { | |
290 | return 0; | |
291 | } | |
292 | ||
3f4110a4 TG |
293 | /* |
294 | * Moorestown specific x86_init function overrides and early setup | |
295 | * calls. | |
296 | */ | |
297 | void __init x86_mrst_early_setup(void) | |
298 | { | |
299 | x86_init.resources.probe_roms = x86_init_noop; | |
300 | x86_init.resources.reserve_resources = x86_init_noop; | |
5b78b672 | 301 | |
3746c6b6 | 302 | x86_init.timers.timer_init = mrst_time_init; |
a875c019 | 303 | x86_init.timers.setup_percpu_clockev = x86_init_noop; |
3746c6b6 JP |
304 | |
305 | x86_init.irqs.pre_vector_init = x86_init_noop; | |
306 | ||
a0c173bd JP |
307 | x86_init.oem.arch_setup = mrst_arch_setup; |
308 | ||
a875c019 | 309 | x86_cpuinit.setup_percpu_clockev = apbt_setup_secondary_clock; |
3746c6b6 JP |
310 | |
311 | x86_platform.calibrate_tsc = mrst_calibrate_tsc; | |
6d2cce62 | 312 | x86_platform.i8042_detect = mrst_i8042_detect; |
168202c7 | 313 | x86_init.timers.wallclock_init = mrst_rtc_init; |
064a59b6 JP |
314 | x86_platform.get_nmi_reason = mrst_get_nmi_reason; |
315 | ||
af2730f6 JP |
316 | x86_init.pci.init = pci_mrst_init; |
317 | x86_init.pci.fixup_irqs = x86_init_noop; | |
318 | ||
5b78b672 | 319 | legacy_pic = &null_legacy_pic; |
fea24e28 | 320 | |
cfb505a7 AD |
321 | /* Moorestown specific power_off/restart method */ |
322 | pm_power_off = mrst_power_off; | |
323 | machine_ops.emergency_restart = mrst_reboot; | |
324 | ||
fea24e28 JP |
325 | /* Avoid searching for BIOS MP tables */ |
326 | x86_init.mpparse.find_smp_config = x86_init_noop; | |
327 | x86_init.mpparse.get_smp_config = x86_init_uint_noop; | |
9d90e49d | 328 | set_bit(MP_BUS_ISA, mp_bus_not_pci); |
3f4110a4 | 329 | } |
a875c019 JP |
330 | |
331 | /* | |
332 | * if user does not want to use per CPU apb timer, just give it a lower rating | |
333 | * than local apic timer and skip the late per cpu timer init. | |
334 | */ | |
335 | static inline int __init setup_x86_mrst_timer(char *arg) | |
336 | { | |
337 | if (!arg) | |
338 | return -EINVAL; | |
339 | ||
340 | if (strcmp("apbt_only", arg) == 0) | |
341 | mrst_timer_options = MRST_TIMER_APBT_ONLY; | |
342 | else if (strcmp("lapic_and_apbt", arg) == 0) | |
343 | mrst_timer_options = MRST_TIMER_LAPIC_APBT; | |
344 | else { | |
345 | pr_warning("X86 MRST timer option %s not recognised" | |
346 | " use x86_mrst_timer=apbt_only or lapic_and_apbt\n", | |
347 | arg); | |
348 | return -EINVAL; | |
349 | } | |
350 | return 0; | |
351 | } | |
352 | __setup("x86_mrst_timer=", setup_x86_mrst_timer); | |
1da4b1c6 FT |
353 | |
354 | /* | |
355 | * Parsing GPIO table first, since the DEVS table will need this table | |
356 | * to map the pin name to the actual pin. | |
357 | */ | |
358 | static struct sfi_gpio_table_entry *gpio_table; | |
359 | static int gpio_num_entry; | |
360 | ||
361 | static int __init sfi_parse_gpio(struct sfi_table_header *table) | |
362 | { | |
363 | struct sfi_table_simple *sb; | |
364 | struct sfi_gpio_table_entry *pentry; | |
365 | int num, i; | |
366 | ||
367 | if (gpio_table) | |
368 | return 0; | |
369 | sb = (struct sfi_table_simple *)table; | |
370 | num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry); | |
371 | pentry = (struct sfi_gpio_table_entry *)sb->pentry; | |
372 | ||
373 | gpio_table = (struct sfi_gpio_table_entry *) | |
374 | kmalloc(num * sizeof(*pentry), GFP_KERNEL); | |
375 | if (!gpio_table) | |
376 | return -1; | |
377 | memcpy(gpio_table, pentry, num * sizeof(*pentry)); | |
378 | gpio_num_entry = num; | |
379 | ||
380 | pr_debug("GPIO pin info:\n"); | |
381 | for (i = 0; i < num; i++, pentry++) | |
382 | pr_debug("info[%2d]: controller = %16.16s, pin_name = %16.16s," | |
383 | " pin = %d\n", i, | |
384 | pentry->controller_name, | |
385 | pentry->pin_name, | |
386 | pentry->pin_no); | |
387 | return 0; | |
388 | } | |
389 | ||
390 | static int get_gpio_by_name(const char *name) | |
391 | { | |
392 | struct sfi_gpio_table_entry *pentry = gpio_table; | |
393 | int i; | |
394 | ||
395 | if (!pentry) | |
396 | return -1; | |
397 | for (i = 0; i < gpio_num_entry; i++, pentry++) { | |
398 | if (!strncmp(name, pentry->pin_name, SFI_NAME_LEN)) | |
399 | return pentry->pin_no; | |
400 | } | |
401 | return -1; | |
402 | } | |
403 | ||
404 | /* | |
405 | * Here defines the array of devices platform data that IAFW would export | |
406 | * through SFI "DEVS" table, we use name and type to match the device and | |
407 | * its platform data. | |
408 | */ | |
409 | struct devs_id { | |
410 | char name[SFI_NAME_LEN + 1]; | |
411 | u8 type; | |
412 | u8 delay; | |
413 | void *(*get_platform_data)(void *info); | |
414 | }; | |
415 | ||
416 | /* the offset for the mapping of global gpio pin to irq */ | |
417 | #define MRST_IRQ_OFFSET 0x100 | |
418 | ||
419 | static void __init *pmic_gpio_platform_data(void *info) | |
420 | { | |
421 | static struct intel_pmic_gpio_platform_data pmic_gpio_pdata; | |
422 | int gpio_base = get_gpio_by_name("pmic_gpio_base"); | |
423 | ||
424 | if (gpio_base == -1) | |
425 | gpio_base = 64; | |
426 | pmic_gpio_pdata.gpio_base = gpio_base; | |
427 | pmic_gpio_pdata.irq_base = gpio_base + MRST_IRQ_OFFSET; | |
428 | pmic_gpio_pdata.gpiointr = 0xffffeff8; | |
429 | ||
430 | return &pmic_gpio_pdata; | |
431 | } | |
432 | ||
433 | static void __init *max3111_platform_data(void *info) | |
434 | { | |
435 | struct spi_board_info *spi_info = info; | |
436 | int intr = get_gpio_by_name("max3111_int"); | |
437 | ||
efe3ed98 | 438 | spi_info->mode = SPI_MODE_0; |
1da4b1c6 FT |
439 | if (intr == -1) |
440 | return NULL; | |
441 | spi_info->irq = intr + MRST_IRQ_OFFSET; | |
442 | return NULL; | |
443 | } | |
444 | ||
445 | /* we have multiple max7315 on the board ... */ | |
446 | #define MAX7315_NUM 2 | |
447 | static void __init *max7315_platform_data(void *info) | |
448 | { | |
449 | static struct pca953x_platform_data max7315_pdata[MAX7315_NUM]; | |
450 | static int nr; | |
451 | struct pca953x_platform_data *max7315 = &max7315_pdata[nr]; | |
452 | struct i2c_board_info *i2c_info = info; | |
453 | int gpio_base, intr; | |
454 | char base_pin_name[SFI_NAME_LEN + 1]; | |
455 | char intr_pin_name[SFI_NAME_LEN + 1]; | |
456 | ||
457 | if (nr == MAX7315_NUM) { | |
458 | pr_err("too many max7315s, we only support %d\n", | |
459 | MAX7315_NUM); | |
460 | return NULL; | |
461 | } | |
462 | /* we have several max7315 on the board, we only need load several | |
463 | * instances of the same pca953x driver to cover them | |
464 | */ | |
465 | strcpy(i2c_info->type, "max7315"); | |
466 | if (nr++) { | |
467 | sprintf(base_pin_name, "max7315_%d_base", nr); | |
468 | sprintf(intr_pin_name, "max7315_%d_int", nr); | |
469 | } else { | |
470 | strcpy(base_pin_name, "max7315_base"); | |
471 | strcpy(intr_pin_name, "max7315_int"); | |
472 | } | |
473 | ||
474 | gpio_base = get_gpio_by_name(base_pin_name); | |
475 | intr = get_gpio_by_name(intr_pin_name); | |
476 | ||
477 | if (gpio_base == -1) | |
478 | return NULL; | |
479 | max7315->gpio_base = gpio_base; | |
480 | if (intr != -1) { | |
481 | i2c_info->irq = intr + MRST_IRQ_OFFSET; | |
482 | max7315->irq_base = gpio_base + MRST_IRQ_OFFSET; | |
483 | } else { | |
484 | i2c_info->irq = -1; | |
485 | max7315->irq_base = -1; | |
486 | } | |
487 | return max7315; | |
488 | } | |
489 | ||
28744b3e JL |
490 | static void *tca6416_platform_data(void *info) |
491 | { | |
492 | static struct pca953x_platform_data tca6416; | |
493 | struct i2c_board_info *i2c_info = info; | |
494 | int gpio_base, intr; | |
495 | char base_pin_name[SFI_NAME_LEN + 1]; | |
496 | char intr_pin_name[SFI_NAME_LEN + 1]; | |
497 | ||
498 | strcpy(i2c_info->type, "tca6416"); | |
499 | strcpy(base_pin_name, "tca6416_base"); | |
500 | strcpy(intr_pin_name, "tca6416_int"); | |
501 | ||
502 | gpio_base = get_gpio_by_name(base_pin_name); | |
503 | intr = get_gpio_by_name(intr_pin_name); | |
504 | ||
505 | if (gpio_base == -1) | |
506 | return NULL; | |
507 | tca6416.gpio_base = gpio_base; | |
508 | if (intr != -1) { | |
509 | i2c_info->irq = intr + MRST_IRQ_OFFSET; | |
510 | tca6416.irq_base = gpio_base + MRST_IRQ_OFFSET; | |
511 | } else { | |
512 | i2c_info->irq = -1; | |
513 | tca6416.irq_base = -1; | |
514 | } | |
515 | return &tca6416; | |
516 | } | |
517 | ||
518 | static void *mpu3050_platform_data(void *info) | |
519 | { | |
520 | struct i2c_board_info *i2c_info = info; | |
521 | int intr = get_gpio_by_name("mpu3050_int"); | |
522 | ||
523 | if (intr == -1) | |
524 | return NULL; | |
525 | ||
526 | i2c_info->irq = intr + MRST_IRQ_OFFSET; | |
527 | return NULL; | |
528 | } | |
529 | ||
1da4b1c6 FT |
530 | static void __init *emc1403_platform_data(void *info) |
531 | { | |
532 | static short intr2nd_pdata; | |
533 | struct i2c_board_info *i2c_info = info; | |
534 | int intr = get_gpio_by_name("thermal_int"); | |
535 | int intr2nd = get_gpio_by_name("thermal_alert"); | |
536 | ||
537 | if (intr == -1 || intr2nd == -1) | |
538 | return NULL; | |
539 | ||
540 | i2c_info->irq = intr + MRST_IRQ_OFFSET; | |
541 | intr2nd_pdata = intr2nd + MRST_IRQ_OFFSET; | |
542 | ||
543 | return &intr2nd_pdata; | |
544 | } | |
545 | ||
546 | static void __init *lis331dl_platform_data(void *info) | |
547 | { | |
548 | static short intr2nd_pdata; | |
549 | struct i2c_board_info *i2c_info = info; | |
550 | int intr = get_gpio_by_name("accel_int"); | |
551 | int intr2nd = get_gpio_by_name("accel_2"); | |
552 | ||
553 | if (intr == -1 || intr2nd == -1) | |
554 | return NULL; | |
555 | ||
556 | i2c_info->irq = intr + MRST_IRQ_OFFSET; | |
557 | intr2nd_pdata = intr2nd + MRST_IRQ_OFFSET; | |
558 | ||
559 | return &intr2nd_pdata; | |
560 | } | |
561 | ||
86071535 VK |
562 | static void __init *no_platform_data(void *info) |
563 | { | |
564 | return NULL; | |
565 | } | |
566 | ||
360545c1 MW |
567 | static struct resource msic_resources[] = { |
568 | { | |
569 | .start = INTEL_MSIC_IRQ_PHYS_BASE, | |
570 | .end = INTEL_MSIC_IRQ_PHYS_BASE + 64 - 1, | |
571 | .flags = IORESOURCE_MEM, | |
572 | }, | |
573 | }; | |
574 | ||
575 | static struct intel_msic_platform_data msic_pdata; | |
576 | ||
577 | static struct platform_device msic_device = { | |
578 | .name = "intel_msic", | |
579 | .id = -1, | |
580 | .dev = { | |
581 | .platform_data = &msic_pdata, | |
582 | }, | |
583 | .num_resources = ARRAY_SIZE(msic_resources), | |
584 | .resource = msic_resources, | |
585 | }; | |
586 | ||
587 | static inline bool mrst_has_msic(void) | |
588 | { | |
589 | return mrst_identify_cpu() == MRST_CPU_CHIP_PENWELL; | |
590 | } | |
591 | ||
592 | static int msic_scu_status_change(struct notifier_block *nb, | |
593 | unsigned long code, void *data) | |
594 | { | |
595 | if (code == SCU_DOWN) { | |
596 | platform_device_unregister(&msic_device); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | return platform_device_register(&msic_device); | |
601 | } | |
602 | ||
603 | static int __init msic_init(void) | |
604 | { | |
605 | static struct notifier_block msic_scu_notifier = { | |
606 | .notifier_call = msic_scu_status_change, | |
607 | }; | |
608 | ||
609 | /* | |
610 | * We need to be sure that the SCU IPC is ready before MSIC device | |
611 | * can be registered. | |
612 | */ | |
613 | if (mrst_has_msic()) | |
614 | intel_scu_notifier_add(&msic_scu_notifier); | |
615 | ||
616 | return 0; | |
617 | } | |
618 | arch_initcall(msic_init); | |
619 | ||
620 | /* | |
621 | * msic_generic_platform_data - sets generic platform data for the block | |
622 | * @info: pointer to the SFI device table entry for this block | |
623 | * @block: MSIC block | |
624 | * | |
625 | * Function sets IRQ number from the SFI table entry for given device to | |
626 | * the MSIC platform data. | |
627 | */ | |
628 | static void *msic_generic_platform_data(void *info, enum intel_msic_block block) | |
629 | { | |
630 | struct sfi_device_table_entry *entry = info; | |
631 | ||
632 | BUG_ON(block < 0 || block >= INTEL_MSIC_BLOCK_LAST); | |
633 | msic_pdata.irq[block] = entry->irq; | |
634 | ||
635 | return no_platform_data(info); | |
636 | } | |
637 | ||
638 | static void *msic_battery_platform_data(void *info) | |
639 | { | |
640 | return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_BATTERY); | |
641 | } | |
642 | ||
643 | static void *msic_gpio_platform_data(void *info) | |
644 | { | |
645 | static struct intel_msic_gpio_pdata pdata; | |
646 | int gpio = get_gpio_by_name("msic_gpio_base"); | |
647 | ||
648 | if (gpio < 0) | |
649 | return NULL; | |
650 | ||
651 | pdata.gpio_base = gpio; | |
652 | msic_pdata.gpio = &pdata; | |
653 | ||
654 | return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_GPIO); | |
655 | } | |
656 | ||
657 | static void *msic_audio_platform_data(void *info) | |
658 | { | |
659 | struct platform_device *pdev; | |
660 | ||
661 | pdev = platform_device_register_simple("sst-platform", -1, NULL, 0); | |
662 | if (IS_ERR(pdev)) { | |
663 | pr_err("failed to create audio platform device\n"); | |
664 | return NULL; | |
665 | } | |
666 | ||
667 | return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_AUDIO); | |
668 | } | |
669 | ||
670 | static void *msic_power_btn_platform_data(void *info) | |
671 | { | |
672 | return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_POWER_BTN); | |
673 | } | |
674 | ||
675 | static void *msic_ocd_platform_data(void *info) | |
676 | { | |
677 | static struct intel_msic_ocd_pdata pdata; | |
678 | int gpio = get_gpio_by_name("ocd_gpio"); | |
679 | ||
680 | if (gpio < 0) | |
681 | return NULL; | |
682 | ||
683 | pdata.gpio = gpio; | |
684 | msic_pdata.ocd = &pdata; | |
685 | ||
686 | return msic_generic_platform_data(info, INTEL_MSIC_BLOCK_OCD); | |
687 | } | |
688 | ||
1da4b1c6 | 689 | static const struct devs_id __initconst device_ids[] = { |
9f80d8b6 | 690 | {"bma023", SFI_DEV_TYPE_I2C, 1, &no_platform_data}, |
1da4b1c6 | 691 | {"pmic_gpio", SFI_DEV_TYPE_SPI, 1, &pmic_gpio_platform_data}, |
efa22126 | 692 | {"pmic_gpio", SFI_DEV_TYPE_IPC, 1, &pmic_gpio_platform_data}, |
1da4b1c6 FT |
693 | {"spi_max3111", SFI_DEV_TYPE_SPI, 0, &max3111_platform_data}, |
694 | {"i2c_max7315", SFI_DEV_TYPE_I2C, 1, &max7315_platform_data}, | |
695 | {"i2c_max7315_2", SFI_DEV_TYPE_I2C, 1, &max7315_platform_data}, | |
28744b3e | 696 | {"tca6416", SFI_DEV_TYPE_I2C, 1, &tca6416_platform_data}, |
1da4b1c6 FT |
697 | {"emc1403", SFI_DEV_TYPE_I2C, 1, &emc1403_platform_data}, |
698 | {"i2c_accel", SFI_DEV_TYPE_I2C, 0, &lis331dl_platform_data}, | |
86071535 | 699 | {"pmic_audio", SFI_DEV_TYPE_IPC, 1, &no_platform_data}, |
28744b3e | 700 | {"mpu3050", SFI_DEV_TYPE_I2C, 1, &mpu3050_platform_data}, |
360545c1 MW |
701 | |
702 | /* MSIC subdevices */ | |
703 | {"msic_battery", SFI_DEV_TYPE_IPC, 1, &msic_battery_platform_data}, | |
704 | {"msic_gpio", SFI_DEV_TYPE_IPC, 1, &msic_gpio_platform_data}, | |
705 | {"msic_audio", SFI_DEV_TYPE_IPC, 1, &msic_audio_platform_data}, | |
706 | {"msic_power_btn", SFI_DEV_TYPE_IPC, 1, &msic_power_btn_platform_data}, | |
707 | {"msic_ocd", SFI_DEV_TYPE_IPC, 1, &msic_ocd_platform_data}, | |
708 | ||
1da4b1c6 FT |
709 | {}, |
710 | }; | |
711 | ||
712 | #define MAX_IPCDEVS 24 | |
713 | static struct platform_device *ipc_devs[MAX_IPCDEVS]; | |
714 | static int ipc_next_dev; | |
715 | ||
716 | #define MAX_SCU_SPI 24 | |
717 | static struct spi_board_info *spi_devs[MAX_SCU_SPI]; | |
718 | static int spi_next_dev; | |
719 | ||
720 | #define MAX_SCU_I2C 24 | |
721 | static struct i2c_board_info *i2c_devs[MAX_SCU_I2C]; | |
722 | static int i2c_bus[MAX_SCU_I2C]; | |
723 | static int i2c_next_dev; | |
724 | ||
725 | static void __init intel_scu_device_register(struct platform_device *pdev) | |
726 | { | |
727 | if(ipc_next_dev == MAX_IPCDEVS) | |
728 | pr_err("too many SCU IPC devices"); | |
729 | else | |
730 | ipc_devs[ipc_next_dev++] = pdev; | |
731 | } | |
732 | ||
733 | static void __init intel_scu_spi_device_register(struct spi_board_info *sdev) | |
734 | { | |
735 | struct spi_board_info *new_dev; | |
736 | ||
737 | if (spi_next_dev == MAX_SCU_SPI) { | |
738 | pr_err("too many SCU SPI devices"); | |
739 | return; | |
740 | } | |
741 | ||
742 | new_dev = kzalloc(sizeof(*sdev), GFP_KERNEL); | |
743 | if (!new_dev) { | |
744 | pr_err("failed to alloc mem for delayed spi dev %s\n", | |
745 | sdev->modalias); | |
746 | return; | |
747 | } | |
748 | memcpy(new_dev, sdev, sizeof(*sdev)); | |
749 | ||
750 | spi_devs[spi_next_dev++] = new_dev; | |
751 | } | |
752 | ||
753 | static void __init intel_scu_i2c_device_register(int bus, | |
754 | struct i2c_board_info *idev) | |
755 | { | |
756 | struct i2c_board_info *new_dev; | |
757 | ||
758 | if (i2c_next_dev == MAX_SCU_I2C) { | |
759 | pr_err("too many SCU I2C devices"); | |
760 | return; | |
761 | } | |
762 | ||
763 | new_dev = kzalloc(sizeof(*idev), GFP_KERNEL); | |
764 | if (!new_dev) { | |
765 | pr_err("failed to alloc mem for delayed i2c dev %s\n", | |
766 | idev->type); | |
767 | return; | |
768 | } | |
769 | memcpy(new_dev, idev, sizeof(*idev)); | |
770 | ||
771 | i2c_bus[i2c_next_dev] = bus; | |
772 | i2c_devs[i2c_next_dev++] = new_dev; | |
773 | } | |
774 | ||
42c2544b AC |
775 | BLOCKING_NOTIFIER_HEAD(intel_scu_notifier); |
776 | EXPORT_SYMBOL_GPL(intel_scu_notifier); | |
777 | ||
1da4b1c6 FT |
778 | /* Called by IPC driver */ |
779 | void intel_scu_devices_create(void) | |
780 | { | |
781 | int i; | |
782 | ||
783 | for (i = 0; i < ipc_next_dev; i++) | |
784 | platform_device_add(ipc_devs[i]); | |
785 | ||
786 | for (i = 0; i < spi_next_dev; i++) | |
787 | spi_register_board_info(spi_devs[i], 1); | |
788 | ||
789 | for (i = 0; i < i2c_next_dev; i++) { | |
790 | struct i2c_adapter *adapter; | |
791 | struct i2c_client *client; | |
792 | ||
793 | adapter = i2c_get_adapter(i2c_bus[i]); | |
794 | if (adapter) { | |
795 | client = i2c_new_device(adapter, i2c_devs[i]); | |
796 | if (!client) | |
797 | pr_err("can't create i2c device %s\n", | |
798 | i2c_devs[i]->type); | |
799 | } else | |
800 | i2c_register_board_info(i2c_bus[i], i2c_devs[i], 1); | |
801 | } | |
42c2544b | 802 | intel_scu_notifier_post(SCU_AVAILABLE, 0L); |
1da4b1c6 FT |
803 | } |
804 | EXPORT_SYMBOL_GPL(intel_scu_devices_create); | |
805 | ||
806 | /* Called by IPC driver */ | |
807 | void intel_scu_devices_destroy(void) | |
808 | { | |
809 | int i; | |
810 | ||
42c2544b AC |
811 | intel_scu_notifier_post(SCU_DOWN, 0L); |
812 | ||
1da4b1c6 FT |
813 | for (i = 0; i < ipc_next_dev; i++) |
814 | platform_device_del(ipc_devs[i]); | |
815 | } | |
816 | EXPORT_SYMBOL_GPL(intel_scu_devices_destroy); | |
817 | ||
818 | static void __init install_irq_resource(struct platform_device *pdev, int irq) | |
819 | { | |
820 | /* Single threaded */ | |
821 | static struct resource __initdata res = { | |
822 | .name = "IRQ", | |
823 | .flags = IORESOURCE_IRQ, | |
824 | }; | |
825 | res.start = irq; | |
826 | platform_device_add_resources(pdev, &res, 1); | |
827 | } | |
828 | ||
360545c1 | 829 | static void __init sfi_handle_ipc_dev(struct sfi_device_table_entry *entry) |
1da4b1c6 FT |
830 | { |
831 | const struct devs_id *dev = device_ids; | |
360545c1 | 832 | struct platform_device *pdev; |
1da4b1c6 FT |
833 | void *pdata = NULL; |
834 | ||
835 | while (dev->name[0]) { | |
836 | if (dev->type == SFI_DEV_TYPE_IPC && | |
360545c1 MW |
837 | !strncmp(dev->name, entry->name, SFI_NAME_LEN)) { |
838 | pdata = dev->get_platform_data(entry); | |
1da4b1c6 FT |
839 | break; |
840 | } | |
841 | dev++; | |
842 | } | |
360545c1 MW |
843 | |
844 | /* | |
845 | * On Medfield the platform device creation is handled by the MSIC | |
846 | * MFD driver so we don't need to do it here. | |
847 | */ | |
848 | if (mrst_has_msic()) | |
849 | return; | |
850 | ||
851 | /* ID as IRQ is a hack that will go away */ | |
852 | pdev = platform_device_alloc(entry->name, entry->irq); | |
853 | if (pdev == NULL) { | |
854 | pr_err("out of memory for SFI platform device '%s'.\n", | |
855 | entry->name); | |
856 | return; | |
857 | } | |
858 | install_irq_resource(pdev, entry->irq); | |
859 | ||
1da4b1c6 FT |
860 | pdev->dev.platform_data = pdata; |
861 | intel_scu_device_register(pdev); | |
862 | } | |
863 | ||
864 | static void __init sfi_handle_spi_dev(struct spi_board_info *spi_info) | |
865 | { | |
866 | const struct devs_id *dev = device_ids; | |
867 | void *pdata = NULL; | |
868 | ||
869 | while (dev->name[0]) { | |
870 | if (dev->type == SFI_DEV_TYPE_SPI && | |
871 | !strncmp(dev->name, spi_info->modalias, SFI_NAME_LEN)) { | |
872 | pdata = dev->get_platform_data(spi_info); | |
873 | break; | |
874 | } | |
875 | dev++; | |
876 | } | |
877 | spi_info->platform_data = pdata; | |
878 | if (dev->delay) | |
879 | intel_scu_spi_device_register(spi_info); | |
880 | else | |
881 | spi_register_board_info(spi_info, 1); | |
882 | } | |
883 | ||
884 | static void __init sfi_handle_i2c_dev(int bus, struct i2c_board_info *i2c_info) | |
885 | { | |
886 | const struct devs_id *dev = device_ids; | |
887 | void *pdata = NULL; | |
888 | ||
889 | while (dev->name[0]) { | |
890 | if (dev->type == SFI_DEV_TYPE_I2C && | |
891 | !strncmp(dev->name, i2c_info->type, SFI_NAME_LEN)) { | |
892 | pdata = dev->get_platform_data(i2c_info); | |
893 | break; | |
894 | } | |
895 | dev++; | |
896 | } | |
897 | i2c_info->platform_data = pdata; | |
898 | ||
899 | if (dev->delay) | |
900 | intel_scu_i2c_device_register(bus, i2c_info); | |
901 | else | |
902 | i2c_register_board_info(bus, i2c_info, 1); | |
903 | } | |
904 | ||
905 | ||
906 | static int __init sfi_parse_devs(struct sfi_table_header *table) | |
907 | { | |
908 | struct sfi_table_simple *sb; | |
909 | struct sfi_device_table_entry *pentry; | |
910 | struct spi_board_info spi_info; | |
911 | struct i2c_board_info i2c_info; | |
1da4b1c6 FT |
912 | int num, i, bus; |
913 | int ioapic; | |
914 | struct io_apic_irq_attr irq_attr; | |
915 | ||
916 | sb = (struct sfi_table_simple *)table; | |
917 | num = SFI_GET_NUM_ENTRIES(sb, struct sfi_device_table_entry); | |
918 | pentry = (struct sfi_device_table_entry *)sb->pentry; | |
919 | ||
920 | for (i = 0; i < num; i++, pentry++) { | |
153b19a3 MW |
921 | int irq = pentry->irq; |
922 | ||
923 | if (irq != (u8)0xff) { /* native RTE case */ | |
1da4b1c6 FT |
924 | /* these SPI2 devices are not exposed to system as PCI |
925 | * devices, but they have separate RTE entry in IOAPIC | |
926 | * so we have to enable them one by one here | |
927 | */ | |
153b19a3 | 928 | ioapic = mp_find_ioapic(irq); |
1da4b1c6 | 929 | irq_attr.ioapic = ioapic; |
153b19a3 | 930 | irq_attr.ioapic_pin = irq; |
1da4b1c6 FT |
931 | irq_attr.trigger = 1; |
932 | irq_attr.polarity = 1; | |
153b19a3 | 933 | io_apic_set_pci_routing(NULL, irq, &irq_attr); |
a94cc4e6 | 934 | } else |
153b19a3 | 935 | irq = 0; /* No irq */ |
a94cc4e6 | 936 | |
1da4b1c6 FT |
937 | switch (pentry->type) { |
938 | case SFI_DEV_TYPE_IPC: | |
1da4b1c6 | 939 | pr_debug("info[%2d]: IPC bus, name = %16.16s, " |
360545c1 MW |
940 | "irq = 0x%2x\n", i, pentry->name, pentry->irq); |
941 | sfi_handle_ipc_dev(pentry); | |
1da4b1c6 FT |
942 | break; |
943 | case SFI_DEV_TYPE_SPI: | |
944 | memset(&spi_info, 0, sizeof(spi_info)); | |
945 | strncpy(spi_info.modalias, pentry->name, SFI_NAME_LEN); | |
153b19a3 | 946 | spi_info.irq = irq; |
1da4b1c6 FT |
947 | spi_info.bus_num = pentry->host_num; |
948 | spi_info.chip_select = pentry->addr; | |
949 | spi_info.max_speed_hz = pentry->max_freq; | |
950 | pr_debug("info[%2d]: SPI bus = %d, name = %16.16s, " | |
951 | "irq = 0x%2x, max_freq = %d, cs = %d\n", i, | |
952 | spi_info.bus_num, | |
953 | spi_info.modalias, | |
954 | spi_info.irq, | |
955 | spi_info.max_speed_hz, | |
956 | spi_info.chip_select); | |
957 | sfi_handle_spi_dev(&spi_info); | |
958 | break; | |
959 | case SFI_DEV_TYPE_I2C: | |
960 | memset(&i2c_info, 0, sizeof(i2c_info)); | |
961 | bus = pentry->host_num; | |
962 | strncpy(i2c_info.type, pentry->name, SFI_NAME_LEN); | |
153b19a3 | 963 | i2c_info.irq = irq; |
1da4b1c6 FT |
964 | i2c_info.addr = pentry->addr; |
965 | pr_debug("info[%2d]: I2C bus = %d, name = %16.16s, " | |
966 | "irq = 0x%2x, addr = 0x%x\n", i, bus, | |
967 | i2c_info.type, | |
968 | i2c_info.irq, | |
969 | i2c_info.addr); | |
970 | sfi_handle_i2c_dev(bus, &i2c_info); | |
971 | break; | |
972 | case SFI_DEV_TYPE_UART: | |
973 | case SFI_DEV_TYPE_HSI: | |
974 | default: | |
975 | ; | |
976 | } | |
977 | } | |
978 | return 0; | |
979 | } | |
980 | ||
981 | static int __init mrst_platform_init(void) | |
982 | { | |
983 | sfi_table_parse(SFI_SIG_GPIO, NULL, NULL, sfi_parse_gpio); | |
984 | sfi_table_parse(SFI_SIG_DEVS, NULL, NULL, sfi_parse_devs); | |
985 | return 0; | |
986 | } | |
987 | arch_initcall(mrst_platform_init); | |
988 | ||
989 | /* | |
990 | * we will search these buttons in SFI GPIO table (by name) | |
991 | * and register them dynamically. Please add all possible | |
992 | * buttons here, we will shrink them if no GPIO found. | |
993 | */ | |
994 | static struct gpio_keys_button gpio_button[] = { | |
995 | {KEY_POWER, -1, 1, "power_btn", EV_KEY, 0, 3000}, | |
996 | {KEY_PROG1, -1, 1, "prog_btn1", EV_KEY, 0, 20}, | |
997 | {KEY_PROG2, -1, 1, "prog_btn2", EV_KEY, 0, 20}, | |
998 | {SW_LID, -1, 1, "lid_switch", EV_SW, 0, 20}, | |
999 | {KEY_VOLUMEUP, -1, 1, "vol_up", EV_KEY, 0, 20}, | |
1000 | {KEY_VOLUMEDOWN, -1, 1, "vol_down", EV_KEY, 0, 20}, | |
1001 | {KEY_CAMERA, -1, 1, "camera_full", EV_KEY, 0, 20}, | |
1002 | {KEY_CAMERA_FOCUS, -1, 1, "camera_half", EV_KEY, 0, 20}, | |
1003 | {SW_KEYPAD_SLIDE, -1, 1, "MagSw1", EV_SW, 0, 20}, | |
1004 | {SW_KEYPAD_SLIDE, -1, 1, "MagSw2", EV_SW, 0, 20}, | |
1005 | }; | |
1006 | ||
1007 | static struct gpio_keys_platform_data mrst_gpio_keys = { | |
1008 | .buttons = gpio_button, | |
1009 | .rep = 1, | |
1010 | .nbuttons = -1, /* will fill it after search */ | |
1011 | }; | |
1012 | ||
1013 | static struct platform_device pb_device = { | |
1014 | .name = "gpio-keys", | |
1015 | .id = -1, | |
1016 | .dev = { | |
1017 | .platform_data = &mrst_gpio_keys, | |
1018 | }, | |
1019 | }; | |
1020 | ||
1021 | /* | |
1022 | * Shrink the non-existent buttons, register the gpio button | |
1023 | * device if there is some | |
1024 | */ | |
1025 | static int __init pb_keys_init(void) | |
1026 | { | |
1027 | struct gpio_keys_button *gb = gpio_button; | |
1028 | int i, num, good = 0; | |
1029 | ||
1030 | num = sizeof(gpio_button) / sizeof(struct gpio_keys_button); | |
1031 | for (i = 0; i < num; i++) { | |
1032 | gb[i].gpio = get_gpio_by_name(gb[i].desc); | |
1033 | if (gb[i].gpio == -1) | |
1034 | continue; | |
1035 | ||
1036 | if (i != good) | |
1037 | gb[good] = gb[i]; | |
1038 | good++; | |
1039 | } | |
1040 | ||
1041 | if (good) { | |
1042 | mrst_gpio_keys.nbuttons = good; | |
1043 | return platform_device_register(&pb_device); | |
1044 | } | |
1045 | return 0; | |
1046 | } | |
1047 | late_initcall(pb_keys_init); |