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[mirror_ubuntu-zesty-kernel.git] / drivers / pinctrl / intel / pinctrl-cherryview.c
1 /*
2 * Cherryview/Braswell pinctrl driver
3 *
4 * Copyright (C) 2014, Intel Corporation
5 * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
6 *
7 * This driver is based on the original Cherryview GPIO driver by
8 * Ning Li <ning.li@intel.com>
9 * Alan Cox <alan@linux.intel.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/types.h>
20 #include <linux/gpio.h>
21 #include <linux/gpio/driver.h>
22 #include <linux/acpi.h>
23 #include <linux/pinctrl/pinctrl.h>
24 #include <linux/pinctrl/pinmux.h>
25 #include <linux/pinctrl/pinconf.h>
26 #include <linux/pinctrl/pinconf-generic.h>
27 #include <linux/platform_device.h>
28
29 #define CHV_INTSTAT 0x300
30 #define CHV_INTMASK 0x380
31
32 #define FAMILY_PAD_REGS_OFF 0x4400
33 #define FAMILY_PAD_REGS_SIZE 0x400
34 #define MAX_FAMILY_PAD_GPIO_NO 15
35 #define GPIO_REGS_SIZE 8
36
37 #define CHV_PADCTRL0 0x000
38 #define CHV_PADCTRL0_INTSEL_SHIFT 28
39 #define CHV_PADCTRL0_INTSEL_MASK (0xf << CHV_PADCTRL0_INTSEL_SHIFT)
40 #define CHV_PADCTRL0_TERM_UP BIT(23)
41 #define CHV_PADCTRL0_TERM_SHIFT 20
42 #define CHV_PADCTRL0_TERM_MASK (7 << CHV_PADCTRL0_TERM_SHIFT)
43 #define CHV_PADCTRL0_TERM_20K 1
44 #define CHV_PADCTRL0_TERM_5K 2
45 #define CHV_PADCTRL0_TERM_1K 4
46 #define CHV_PADCTRL0_PMODE_SHIFT 16
47 #define CHV_PADCTRL0_PMODE_MASK (0xf << CHV_PADCTRL0_PMODE_SHIFT)
48 #define CHV_PADCTRL0_GPIOEN BIT(15)
49 #define CHV_PADCTRL0_GPIOCFG_SHIFT 8
50 #define CHV_PADCTRL0_GPIOCFG_MASK (7 << CHV_PADCTRL0_GPIOCFG_SHIFT)
51 #define CHV_PADCTRL0_GPIOCFG_GPIO 0
52 #define CHV_PADCTRL0_GPIOCFG_GPO 1
53 #define CHV_PADCTRL0_GPIOCFG_GPI 2
54 #define CHV_PADCTRL0_GPIOCFG_HIZ 3
55 #define CHV_PADCTRL0_GPIOTXSTATE BIT(1)
56 #define CHV_PADCTRL0_GPIORXSTATE BIT(0)
57
58 #define CHV_PADCTRL1 0x004
59 #define CHV_PADCTRL1_CFGLOCK BIT(31)
60 #define CHV_PADCTRL1_INVRXTX_SHIFT 4
61 #define CHV_PADCTRL1_INVRXTX_MASK (0xf << CHV_PADCTRL1_INVRXTX_SHIFT)
62 #define CHV_PADCTRL1_INVRXTX_TXENABLE (2 << CHV_PADCTRL1_INVRXTX_SHIFT)
63 #define CHV_PADCTRL1_ODEN BIT(3)
64 #define CHV_PADCTRL1_INVRXTX_RXDATA (4 << CHV_PADCTRL1_INVRXTX_SHIFT)
65 #define CHV_PADCTRL1_INTWAKECFG_MASK 7
66 #define CHV_PADCTRL1_INTWAKECFG_FALLING 1
67 #define CHV_PADCTRL1_INTWAKECFG_RISING 2
68 #define CHV_PADCTRL1_INTWAKECFG_BOTH 3
69 #define CHV_PADCTRL1_INTWAKECFG_LEVEL 4
70
71 /**
72 * struct chv_alternate_function - A per group or per pin alternate function
73 * @pin: Pin number (only used in per pin configs)
74 * @mode: Mode the pin should be set in
75 * @invert_oe: Invert OE for this pin
76 */
77 struct chv_alternate_function {
78 unsigned pin;
79 u8 mode;
80 bool invert_oe;
81 };
82
83 /**
84 * struct chv_pincgroup - describes a CHV pin group
85 * @name: Name of the group
86 * @pins: An array of pins in this group
87 * @npins: Number of pins in this group
88 * @altfunc: Alternate function applied to all pins in this group
89 * @overrides: Alternate function override per pin or %NULL if not used
90 * @noverrides: Number of per pin alternate function overrides if
91 * @overrides != NULL.
92 */
93 struct chv_pingroup {
94 const char *name;
95 const unsigned *pins;
96 size_t npins;
97 struct chv_alternate_function altfunc;
98 const struct chv_alternate_function *overrides;
99 size_t noverrides;
100 };
101
102 /**
103 * struct chv_function - A CHV pinmux function
104 * @name: Name of the function
105 * @groups: An array of groups for this function
106 * @ngroups: Number of groups in @groups
107 */
108 struct chv_function {
109 const char *name;
110 const char * const *groups;
111 size_t ngroups;
112 };
113
114 /**
115 * struct chv_gpio_pinrange - A range of pins that can be used as GPIOs
116 * @base: Start pin number
117 * @npins: Number of pins in this range
118 */
119 struct chv_gpio_pinrange {
120 unsigned base;
121 unsigned npins;
122 };
123
124 /**
125 * struct chv_community - A community specific configuration
126 * @uid: ACPI _UID used to match the community
127 * @pins: All pins in this community
128 * @npins: Number of pins
129 * @groups: All groups in this community
130 * @ngroups: Number of groups
131 * @functions: All functions in this community
132 * @nfunctions: Number of functions
133 * @ngpios: Number of GPIOs in this community
134 * @gpio_ranges: An array of GPIO ranges in this community
135 * @ngpio_ranges: Number of GPIO ranges
136 * @ngpios: Total number of GPIOs in this community
137 */
138 struct chv_community {
139 const char *uid;
140 const struct pinctrl_pin_desc *pins;
141 size_t npins;
142 const struct chv_pingroup *groups;
143 size_t ngroups;
144 const struct chv_function *functions;
145 size_t nfunctions;
146 const struct chv_gpio_pinrange *gpio_ranges;
147 size_t ngpio_ranges;
148 size_t ngpios;
149 };
150
151 struct chv_pin_context {
152 u32 padctrl0;
153 u32 padctrl1;
154 };
155
156 /**
157 * struct chv_pinctrl - CHV pinctrl private structure
158 * @dev: Pointer to the parent device
159 * @pctldesc: Pin controller description
160 * @pctldev: Pointer to the pin controller device
161 * @chip: GPIO chip in this pin controller
162 * @regs: MMIO registers
163 * @lock: Lock to serialize register accesses
164 * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO
165 * offset (in GPIO number space)
166 * @community: Community this pinctrl instance represents
167 *
168 * The first group in @groups is expected to contain all pins that can be
169 * used as GPIOs.
170 */
171 struct chv_pinctrl {
172 struct device *dev;
173 struct pinctrl_desc pctldesc;
174 struct pinctrl_dev *pctldev;
175 struct gpio_chip chip;
176 void __iomem *regs;
177 raw_spinlock_t lock;
178 unsigned intr_lines[16];
179 const struct chv_community *community;
180 u32 saved_intmask;
181 struct chv_pin_context *saved_pin_context;
182 };
183
184 #define gpiochip_to_pinctrl(c) container_of(c, struct chv_pinctrl, chip)
185
186 #define ALTERNATE_FUNCTION(p, m, i) \
187 { \
188 .pin = (p), \
189 .mode = (m), \
190 .invert_oe = (i), \
191 }
192
193 #define PIN_GROUP(n, p, m, i) \
194 { \
195 .name = (n), \
196 .pins = (p), \
197 .npins = ARRAY_SIZE((p)), \
198 .altfunc.mode = (m), \
199 .altfunc.invert_oe = (i), \
200 }
201
202 #define PIN_GROUP_WITH_OVERRIDE(n, p, m, i, o) \
203 { \
204 .name = (n), \
205 .pins = (p), \
206 .npins = ARRAY_SIZE((p)), \
207 .altfunc.mode = (m), \
208 .altfunc.invert_oe = (i), \
209 .overrides = (o), \
210 .noverrides = ARRAY_SIZE((o)), \
211 }
212
213 #define FUNCTION(n, g) \
214 { \
215 .name = (n), \
216 .groups = (g), \
217 .ngroups = ARRAY_SIZE((g)), \
218 }
219
220 #define GPIO_PINRANGE(start, end) \
221 { \
222 .base = (start), \
223 .npins = (end) - (start) + 1, \
224 }
225
226 static const struct pinctrl_pin_desc southwest_pins[] = {
227 PINCTRL_PIN(0, "FST_SPI_D2"),
228 PINCTRL_PIN(1, "FST_SPI_D0"),
229 PINCTRL_PIN(2, "FST_SPI_CLK"),
230 PINCTRL_PIN(3, "FST_SPI_D3"),
231 PINCTRL_PIN(4, "FST_SPI_CS1_B"),
232 PINCTRL_PIN(5, "FST_SPI_D1"),
233 PINCTRL_PIN(6, "FST_SPI_CS0_B"),
234 PINCTRL_PIN(7, "FST_SPI_CS2_B"),
235
236 PINCTRL_PIN(15, "UART1_RTS_B"),
237 PINCTRL_PIN(16, "UART1_RXD"),
238 PINCTRL_PIN(17, "UART2_RXD"),
239 PINCTRL_PIN(18, "UART1_CTS_B"),
240 PINCTRL_PIN(19, "UART2_RTS_B"),
241 PINCTRL_PIN(20, "UART1_TXD"),
242 PINCTRL_PIN(21, "UART2_TXD"),
243 PINCTRL_PIN(22, "UART2_CTS_B"),
244
245 PINCTRL_PIN(30, "MF_HDA_CLK"),
246 PINCTRL_PIN(31, "MF_HDA_RSTB"),
247 PINCTRL_PIN(32, "MF_HDA_SDIO"),
248 PINCTRL_PIN(33, "MF_HDA_SDO"),
249 PINCTRL_PIN(34, "MF_HDA_DOCKRSTB"),
250 PINCTRL_PIN(35, "MF_HDA_SYNC"),
251 PINCTRL_PIN(36, "MF_HDA_SDI1"),
252 PINCTRL_PIN(37, "MF_HDA_DOCKENB"),
253
254 PINCTRL_PIN(45, "I2C5_SDA"),
255 PINCTRL_PIN(46, "I2C4_SDA"),
256 PINCTRL_PIN(47, "I2C6_SDA"),
257 PINCTRL_PIN(48, "I2C5_SCL"),
258 PINCTRL_PIN(49, "I2C_NFC_SDA"),
259 PINCTRL_PIN(50, "I2C4_SCL"),
260 PINCTRL_PIN(51, "I2C6_SCL"),
261 PINCTRL_PIN(52, "I2C_NFC_SCL"),
262
263 PINCTRL_PIN(60, "I2C1_SDA"),
264 PINCTRL_PIN(61, "I2C0_SDA"),
265 PINCTRL_PIN(62, "I2C2_SDA"),
266 PINCTRL_PIN(63, "I2C1_SCL"),
267 PINCTRL_PIN(64, "I2C3_SDA"),
268 PINCTRL_PIN(65, "I2C0_SCL"),
269 PINCTRL_PIN(66, "I2C2_SCL"),
270 PINCTRL_PIN(67, "I2C3_SCL"),
271
272 PINCTRL_PIN(75, "SATA_GP0"),
273 PINCTRL_PIN(76, "SATA_GP1"),
274 PINCTRL_PIN(77, "SATA_LEDN"),
275 PINCTRL_PIN(78, "SATA_GP2"),
276 PINCTRL_PIN(79, "MF_SMB_ALERTB"),
277 PINCTRL_PIN(80, "SATA_GP3"),
278 PINCTRL_PIN(81, "MF_SMB_CLK"),
279 PINCTRL_PIN(82, "MF_SMB_DATA"),
280
281 PINCTRL_PIN(90, "PCIE_CLKREQ0B"),
282 PINCTRL_PIN(91, "PCIE_CLKREQ1B"),
283 PINCTRL_PIN(92, "GP_SSP_2_CLK"),
284 PINCTRL_PIN(93, "PCIE_CLKREQ2B"),
285 PINCTRL_PIN(94, "GP_SSP_2_RXD"),
286 PINCTRL_PIN(95, "PCIE_CLKREQ3B"),
287 PINCTRL_PIN(96, "GP_SSP_2_FS"),
288 PINCTRL_PIN(97, "GP_SSP_2_TXD"),
289 };
290
291 static const unsigned southwest_fspi_pins[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
292 static const unsigned southwest_uart0_pins[] = { 16, 20 };
293 static const unsigned southwest_uart1_pins[] = { 15, 16, 18, 20 };
294 static const unsigned southwest_uart2_pins[] = { 17, 19, 21, 22 };
295 static const unsigned southwest_i2c0_pins[] = { 61, 65 };
296 static const unsigned southwest_hda_pins[] = { 30, 31, 32, 33, 34, 35, 36, 37 };
297 static const unsigned southwest_lpe_pins[] = {
298 30, 31, 32, 33, 34, 35, 36, 37, 92, 94, 96, 97,
299 };
300 static const unsigned southwest_i2c1_pins[] = { 60, 63 };
301 static const unsigned southwest_i2c2_pins[] = { 62, 66 };
302 static const unsigned southwest_i2c3_pins[] = { 64, 67 };
303 static const unsigned southwest_i2c4_pins[] = { 46, 50 };
304 static const unsigned southwest_i2c5_pins[] = { 45, 48 };
305 static const unsigned southwest_i2c6_pins[] = { 47, 51 };
306 static const unsigned southwest_i2c_nfc_pins[] = { 49, 52 };
307 static const unsigned southwest_smbus_pins[] = { 79, 81, 82 };
308 static const unsigned southwest_spi3_pins[] = { 76, 79, 80, 81, 82 };
309
310 /* LPE I2S TXD pins need to have invert_oe set */
311 static const struct chv_alternate_function southwest_lpe_altfuncs[] = {
312 ALTERNATE_FUNCTION(30, 1, true),
313 ALTERNATE_FUNCTION(34, 1, true),
314 ALTERNATE_FUNCTION(97, 1, true),
315 };
316
317 /*
318 * Two spi3 chipselects are available in different mode than the main spi3
319 * functionality, which is using mode 1.
320 */
321 static const struct chv_alternate_function southwest_spi3_altfuncs[] = {
322 ALTERNATE_FUNCTION(76, 3, false),
323 ALTERNATE_FUNCTION(80, 3, false),
324 };
325
326 static const struct chv_pingroup southwest_groups[] = {
327 PIN_GROUP("uart0_grp", southwest_uart0_pins, 2, false),
328 PIN_GROUP("uart1_grp", southwest_uart1_pins, 1, false),
329 PIN_GROUP("uart2_grp", southwest_uart2_pins, 1, false),
330 PIN_GROUP("hda_grp", southwest_hda_pins, 2, false),
331 PIN_GROUP("i2c0_grp", southwest_i2c0_pins, 1, true),
332 PIN_GROUP("i2c1_grp", southwest_i2c1_pins, 1, true),
333 PIN_GROUP("i2c2_grp", southwest_i2c2_pins, 1, true),
334 PIN_GROUP("i2c3_grp", southwest_i2c3_pins, 1, true),
335 PIN_GROUP("i2c4_grp", southwest_i2c4_pins, 1, true),
336 PIN_GROUP("i2c5_grp", southwest_i2c5_pins, 1, true),
337 PIN_GROUP("i2c6_grp", southwest_i2c6_pins, 1, true),
338 PIN_GROUP("i2c_nfc_grp", southwest_i2c_nfc_pins, 2, true),
339
340 PIN_GROUP_WITH_OVERRIDE("lpe_grp", southwest_lpe_pins, 1, false,
341 southwest_lpe_altfuncs),
342 PIN_GROUP_WITH_OVERRIDE("spi3_grp", southwest_spi3_pins, 2, false,
343 southwest_spi3_altfuncs),
344 };
345
346 static const char * const southwest_uart0_groups[] = { "uart0_grp" };
347 static const char * const southwest_uart1_groups[] = { "uart1_grp" };
348 static const char * const southwest_uart2_groups[] = { "uart2_grp" };
349 static const char * const southwest_hda_groups[] = { "hda_grp" };
350 static const char * const southwest_lpe_groups[] = { "lpe_grp" };
351 static const char * const southwest_i2c0_groups[] = { "i2c0_grp" };
352 static const char * const southwest_i2c1_groups[] = { "i2c1_grp" };
353 static const char * const southwest_i2c2_groups[] = { "i2c2_grp" };
354 static const char * const southwest_i2c3_groups[] = { "i2c3_grp" };
355 static const char * const southwest_i2c4_groups[] = { "i2c4_grp" };
356 static const char * const southwest_i2c5_groups[] = { "i2c5_grp" };
357 static const char * const southwest_i2c6_groups[] = { "i2c6_grp" };
358 static const char * const southwest_i2c_nfc_groups[] = { "i2c_nfc_grp" };
359 static const char * const southwest_spi3_groups[] = { "spi3_grp" };
360
361 /*
362 * Only do pinmuxing for certain LPSS devices for now. Rest of the pins are
363 * enabled only as GPIOs.
364 */
365 static const struct chv_function southwest_functions[] = {
366 FUNCTION("uart0", southwest_uart0_groups),
367 FUNCTION("uart1", southwest_uart1_groups),
368 FUNCTION("uart2", southwest_uart2_groups),
369 FUNCTION("hda", southwest_hda_groups),
370 FUNCTION("lpe", southwest_lpe_groups),
371 FUNCTION("i2c0", southwest_i2c0_groups),
372 FUNCTION("i2c1", southwest_i2c1_groups),
373 FUNCTION("i2c2", southwest_i2c2_groups),
374 FUNCTION("i2c3", southwest_i2c3_groups),
375 FUNCTION("i2c4", southwest_i2c4_groups),
376 FUNCTION("i2c5", southwest_i2c5_groups),
377 FUNCTION("i2c6", southwest_i2c6_groups),
378 FUNCTION("i2c_nfc", southwest_i2c_nfc_groups),
379 FUNCTION("spi3", southwest_spi3_groups),
380 };
381
382 static const struct chv_gpio_pinrange southwest_gpio_ranges[] = {
383 GPIO_PINRANGE(0, 7),
384 GPIO_PINRANGE(15, 22),
385 GPIO_PINRANGE(30, 37),
386 GPIO_PINRANGE(45, 52),
387 GPIO_PINRANGE(60, 67),
388 GPIO_PINRANGE(75, 82),
389 GPIO_PINRANGE(90, 97),
390 };
391
392 static const struct chv_community southwest_community = {
393 .uid = "1",
394 .pins = southwest_pins,
395 .npins = ARRAY_SIZE(southwest_pins),
396 .groups = southwest_groups,
397 .ngroups = ARRAY_SIZE(southwest_groups),
398 .functions = southwest_functions,
399 .nfunctions = ARRAY_SIZE(southwest_functions),
400 .gpio_ranges = southwest_gpio_ranges,
401 .ngpio_ranges = ARRAY_SIZE(southwest_gpio_ranges),
402 .ngpios = ARRAY_SIZE(southwest_pins),
403 };
404
405 static const struct pinctrl_pin_desc north_pins[] = {
406 PINCTRL_PIN(0, "GPIO_DFX_0"),
407 PINCTRL_PIN(1, "GPIO_DFX_3"),
408 PINCTRL_PIN(2, "GPIO_DFX_7"),
409 PINCTRL_PIN(3, "GPIO_DFX_1"),
410 PINCTRL_PIN(4, "GPIO_DFX_5"),
411 PINCTRL_PIN(5, "GPIO_DFX_4"),
412 PINCTRL_PIN(6, "GPIO_DFX_8"),
413 PINCTRL_PIN(7, "GPIO_DFX_2"),
414 PINCTRL_PIN(8, "GPIO_DFX_6"),
415
416 PINCTRL_PIN(15, "GPIO_SUS0"),
417 PINCTRL_PIN(16, "SEC_GPIO_SUS10"),
418 PINCTRL_PIN(17, "GPIO_SUS3"),
419 PINCTRL_PIN(18, "GPIO_SUS7"),
420 PINCTRL_PIN(19, "GPIO_SUS1"),
421 PINCTRL_PIN(20, "GPIO_SUS5"),
422 PINCTRL_PIN(21, "SEC_GPIO_SUS11"),
423 PINCTRL_PIN(22, "GPIO_SUS4"),
424 PINCTRL_PIN(23, "SEC_GPIO_SUS8"),
425 PINCTRL_PIN(24, "GPIO_SUS2"),
426 PINCTRL_PIN(25, "GPIO_SUS6"),
427 PINCTRL_PIN(26, "CX_PREQ_B"),
428 PINCTRL_PIN(27, "SEC_GPIO_SUS9"),
429
430 PINCTRL_PIN(30, "TRST_B"),
431 PINCTRL_PIN(31, "TCK"),
432 PINCTRL_PIN(32, "PROCHOT_B"),
433 PINCTRL_PIN(33, "SVIDO_DATA"),
434 PINCTRL_PIN(34, "TMS"),
435 PINCTRL_PIN(35, "CX_PRDY_B_2"),
436 PINCTRL_PIN(36, "TDO_2"),
437 PINCTRL_PIN(37, "CX_PRDY_B"),
438 PINCTRL_PIN(38, "SVIDO_ALERT_B"),
439 PINCTRL_PIN(39, "TDO"),
440 PINCTRL_PIN(40, "SVIDO_CLK"),
441 PINCTRL_PIN(41, "TDI"),
442
443 PINCTRL_PIN(45, "GP_CAMERASB_05"),
444 PINCTRL_PIN(46, "GP_CAMERASB_02"),
445 PINCTRL_PIN(47, "GP_CAMERASB_08"),
446 PINCTRL_PIN(48, "GP_CAMERASB_00"),
447 PINCTRL_PIN(49, "GP_CAMERASB_06"),
448 PINCTRL_PIN(50, "GP_CAMERASB_10"),
449 PINCTRL_PIN(51, "GP_CAMERASB_03"),
450 PINCTRL_PIN(52, "GP_CAMERASB_09"),
451 PINCTRL_PIN(53, "GP_CAMERASB_01"),
452 PINCTRL_PIN(54, "GP_CAMERASB_07"),
453 PINCTRL_PIN(55, "GP_CAMERASB_11"),
454 PINCTRL_PIN(56, "GP_CAMERASB_04"),
455
456 PINCTRL_PIN(60, "PANEL0_BKLTEN"),
457 PINCTRL_PIN(61, "HV_DDI0_HPD"),
458 PINCTRL_PIN(62, "HV_DDI2_DDC_SDA"),
459 PINCTRL_PIN(63, "PANEL1_BKLTCTL"),
460 PINCTRL_PIN(64, "HV_DDI1_HPD"),
461 PINCTRL_PIN(65, "PANEL0_BKLTCTL"),
462 PINCTRL_PIN(66, "HV_DDI0_DDC_SDA"),
463 PINCTRL_PIN(67, "HV_DDI2_DDC_SCL"),
464 PINCTRL_PIN(68, "HV_DDI2_HPD"),
465 PINCTRL_PIN(69, "PANEL1_VDDEN"),
466 PINCTRL_PIN(70, "PANEL1_BKLTEN"),
467 PINCTRL_PIN(71, "HV_DDI0_DDC_SCL"),
468 PINCTRL_PIN(72, "PANEL0_VDDEN"),
469 };
470
471 static const struct chv_gpio_pinrange north_gpio_ranges[] = {
472 GPIO_PINRANGE(0, 8),
473 GPIO_PINRANGE(15, 27),
474 GPIO_PINRANGE(30, 41),
475 GPIO_PINRANGE(45, 56),
476 GPIO_PINRANGE(60, 72),
477 };
478
479 static const struct chv_community north_community = {
480 .uid = "2",
481 .pins = north_pins,
482 .npins = ARRAY_SIZE(north_pins),
483 .gpio_ranges = north_gpio_ranges,
484 .ngpio_ranges = ARRAY_SIZE(north_gpio_ranges),
485 .ngpios = ARRAY_SIZE(north_pins),
486 };
487
488 static const struct pinctrl_pin_desc east_pins[] = {
489 PINCTRL_PIN(0, "PMU_SLP_S3_B"),
490 PINCTRL_PIN(1, "PMU_BATLOW_B"),
491 PINCTRL_PIN(2, "SUS_STAT_B"),
492 PINCTRL_PIN(3, "PMU_SLP_S0IX_B"),
493 PINCTRL_PIN(4, "PMU_AC_PRESENT"),
494 PINCTRL_PIN(5, "PMU_PLTRST_B"),
495 PINCTRL_PIN(6, "PMU_SUSCLK"),
496 PINCTRL_PIN(7, "PMU_SLP_LAN_B"),
497 PINCTRL_PIN(8, "PMU_PWRBTN_B"),
498 PINCTRL_PIN(9, "PMU_SLP_S4_B"),
499 PINCTRL_PIN(10, "PMU_WAKE_B"),
500 PINCTRL_PIN(11, "PMU_WAKE_LAN_B"),
501
502 PINCTRL_PIN(15, "MF_ISH_GPIO_3"),
503 PINCTRL_PIN(16, "MF_ISH_GPIO_7"),
504 PINCTRL_PIN(17, "MF_ISH_I2C1_SCL"),
505 PINCTRL_PIN(18, "MF_ISH_GPIO_1"),
506 PINCTRL_PIN(19, "MF_ISH_GPIO_5"),
507 PINCTRL_PIN(20, "MF_ISH_GPIO_9"),
508 PINCTRL_PIN(21, "MF_ISH_GPIO_0"),
509 PINCTRL_PIN(22, "MF_ISH_GPIO_4"),
510 PINCTRL_PIN(23, "MF_ISH_GPIO_8"),
511 PINCTRL_PIN(24, "MF_ISH_GPIO_2"),
512 PINCTRL_PIN(25, "MF_ISH_GPIO_6"),
513 PINCTRL_PIN(26, "MF_ISH_I2C1_SDA"),
514 };
515
516 static const struct chv_gpio_pinrange east_gpio_ranges[] = {
517 GPIO_PINRANGE(0, 11),
518 GPIO_PINRANGE(15, 26),
519 };
520
521 static const struct chv_community east_community = {
522 .uid = "3",
523 .pins = east_pins,
524 .npins = ARRAY_SIZE(east_pins),
525 .gpio_ranges = east_gpio_ranges,
526 .ngpio_ranges = ARRAY_SIZE(east_gpio_ranges),
527 .ngpios = ARRAY_SIZE(east_pins),
528 };
529
530 static const struct pinctrl_pin_desc southeast_pins[] = {
531 PINCTRL_PIN(0, "MF_PLT_CLK0"),
532 PINCTRL_PIN(1, "PWM1"),
533 PINCTRL_PIN(2, "MF_PLT_CLK1"),
534 PINCTRL_PIN(3, "MF_PLT_CLK4"),
535 PINCTRL_PIN(4, "MF_PLT_CLK3"),
536 PINCTRL_PIN(5, "PWM0"),
537 PINCTRL_PIN(6, "MF_PLT_CLK5"),
538 PINCTRL_PIN(7, "MF_PLT_CLK2"),
539
540 PINCTRL_PIN(15, "SDMMC2_D3_CD_B"),
541 PINCTRL_PIN(16, "SDMMC1_CLK"),
542 PINCTRL_PIN(17, "SDMMC1_D0"),
543 PINCTRL_PIN(18, "SDMMC2_D1"),
544 PINCTRL_PIN(19, "SDMMC2_CLK"),
545 PINCTRL_PIN(20, "SDMMC1_D2"),
546 PINCTRL_PIN(21, "SDMMC2_D2"),
547 PINCTRL_PIN(22, "SDMMC2_CMD"),
548 PINCTRL_PIN(23, "SDMMC1_CMD"),
549 PINCTRL_PIN(24, "SDMMC1_D1"),
550 PINCTRL_PIN(25, "SDMMC2_D0"),
551 PINCTRL_PIN(26, "SDMMC1_D3_CD_B"),
552
553 PINCTRL_PIN(30, "SDMMC3_D1"),
554 PINCTRL_PIN(31, "SDMMC3_CLK"),
555 PINCTRL_PIN(32, "SDMMC3_D3"),
556 PINCTRL_PIN(33, "SDMMC3_D2"),
557 PINCTRL_PIN(34, "SDMMC3_CMD"),
558 PINCTRL_PIN(35, "SDMMC3_D0"),
559
560 PINCTRL_PIN(45, "MF_LPC_AD2"),
561 PINCTRL_PIN(46, "LPC_CLKRUNB"),
562 PINCTRL_PIN(47, "MF_LPC_AD0"),
563 PINCTRL_PIN(48, "LPC_FRAMEB"),
564 PINCTRL_PIN(49, "MF_LPC_CLKOUT1"),
565 PINCTRL_PIN(50, "MF_LPC_AD3"),
566 PINCTRL_PIN(51, "MF_LPC_CLKOUT0"),
567 PINCTRL_PIN(52, "MF_LPC_AD1"),
568
569 PINCTRL_PIN(60, "SPI1_MISO"),
570 PINCTRL_PIN(61, "SPI1_CSO_B"),
571 PINCTRL_PIN(62, "SPI1_CLK"),
572 PINCTRL_PIN(63, "MMC1_D6"),
573 PINCTRL_PIN(64, "SPI1_MOSI"),
574 PINCTRL_PIN(65, "MMC1_D5"),
575 PINCTRL_PIN(66, "SPI1_CS1_B"),
576 PINCTRL_PIN(67, "MMC1_D4_SD_WE"),
577 PINCTRL_PIN(68, "MMC1_D7"),
578 PINCTRL_PIN(69, "MMC1_RCLK"),
579
580 PINCTRL_PIN(75, "USB_OC1_B"),
581 PINCTRL_PIN(76, "PMU_RESETBUTTON_B"),
582 PINCTRL_PIN(77, "GPIO_ALERT"),
583 PINCTRL_PIN(78, "SDMMC3_PWR_EN_B"),
584 PINCTRL_PIN(79, "ILB_SERIRQ"),
585 PINCTRL_PIN(80, "USB_OC0_B"),
586 PINCTRL_PIN(81, "SDMMC3_CD_B"),
587 PINCTRL_PIN(82, "SPKR"),
588 PINCTRL_PIN(83, "SUSPWRDNACK"),
589 PINCTRL_PIN(84, "SPARE_PIN"),
590 PINCTRL_PIN(85, "SDMMC3_1P8_EN"),
591 };
592
593 static const unsigned southeast_pwm0_pins[] = { 5 };
594 static const unsigned southeast_pwm1_pins[] = { 1 };
595 static const unsigned southeast_sdmmc1_pins[] = {
596 16, 17, 20, 23, 24, 26, 63, 65, 67, 68, 69,
597 };
598 static const unsigned southeast_sdmmc2_pins[] = { 15, 18, 19, 21, 22, 25 };
599 static const unsigned southeast_sdmmc3_pins[] = {
600 30, 31, 32, 33, 34, 35, 78, 81, 85,
601 };
602 static const unsigned southeast_spi1_pins[] = { 60, 61, 62, 64, 66 };
603 static const unsigned southeast_spi2_pins[] = { 2, 3, 4, 6, 7 };
604
605 static const struct chv_pingroup southeast_groups[] = {
606 PIN_GROUP("pwm0_grp", southeast_pwm0_pins, 1, false),
607 PIN_GROUP("pwm1_grp", southeast_pwm1_pins, 1, false),
608 PIN_GROUP("sdmmc1_grp", southeast_sdmmc1_pins, 1, false),
609 PIN_GROUP("sdmmc2_grp", southeast_sdmmc2_pins, 1, false),
610 PIN_GROUP("sdmmc3_grp", southeast_sdmmc3_pins, 1, false),
611 PIN_GROUP("spi1_grp", southeast_spi1_pins, 1, false),
612 PIN_GROUP("spi2_grp", southeast_spi2_pins, 4, false),
613 };
614
615 static const char * const southeast_pwm0_groups[] = { "pwm0_grp" };
616 static const char * const southeast_pwm1_groups[] = { "pwm1_grp" };
617 static const char * const southeast_sdmmc1_groups[] = { "sdmmc1_grp" };
618 static const char * const southeast_sdmmc2_groups[] = { "sdmmc2_grp" };
619 static const char * const southeast_sdmmc3_groups[] = { "sdmmc3_grp" };
620 static const char * const southeast_spi1_groups[] = { "spi1_grp" };
621 static const char * const southeast_spi2_groups[] = { "spi2_grp" };
622
623 static const struct chv_function southeast_functions[] = {
624 FUNCTION("pwm0", southeast_pwm0_groups),
625 FUNCTION("pwm1", southeast_pwm1_groups),
626 FUNCTION("sdmmc1", southeast_sdmmc1_groups),
627 FUNCTION("sdmmc2", southeast_sdmmc2_groups),
628 FUNCTION("sdmmc3", southeast_sdmmc3_groups),
629 FUNCTION("spi1", southeast_spi1_groups),
630 FUNCTION("spi2", southeast_spi2_groups),
631 };
632
633 static const struct chv_gpio_pinrange southeast_gpio_ranges[] = {
634 GPIO_PINRANGE(0, 7),
635 GPIO_PINRANGE(15, 26),
636 GPIO_PINRANGE(30, 35),
637 GPIO_PINRANGE(45, 52),
638 GPIO_PINRANGE(60, 69),
639 GPIO_PINRANGE(75, 85),
640 };
641
642 static const struct chv_community southeast_community = {
643 .uid = "4",
644 .pins = southeast_pins,
645 .npins = ARRAY_SIZE(southeast_pins),
646 .groups = southeast_groups,
647 .ngroups = ARRAY_SIZE(southeast_groups),
648 .functions = southeast_functions,
649 .nfunctions = ARRAY_SIZE(southeast_functions),
650 .gpio_ranges = southeast_gpio_ranges,
651 .ngpio_ranges = ARRAY_SIZE(southeast_gpio_ranges),
652 .ngpios = ARRAY_SIZE(southeast_pins),
653 };
654
655 static const struct chv_community *chv_communities[] = {
656 &southwest_community,
657 &north_community,
658 &east_community,
659 &southeast_community,
660 };
661
662 static void __iomem *chv_padreg(struct chv_pinctrl *pctrl, unsigned offset,
663 unsigned reg)
664 {
665 unsigned family_no = offset / MAX_FAMILY_PAD_GPIO_NO;
666 unsigned pad_no = offset % MAX_FAMILY_PAD_GPIO_NO;
667
668 offset = FAMILY_PAD_REGS_OFF + FAMILY_PAD_REGS_SIZE * family_no +
669 GPIO_REGS_SIZE * pad_no;
670
671 return pctrl->regs + offset + reg;
672 }
673
674 static void chv_writel(u32 value, void __iomem *reg)
675 {
676 writel(value, reg);
677 /* simple readback to confirm the bus transferring done */
678 readl(reg);
679 }
680
681 /* When Pad Cfg is locked, driver can only change GPIOTXState or GPIORXState */
682 static bool chv_pad_locked(struct chv_pinctrl *pctrl, unsigned offset)
683 {
684 void __iomem *reg;
685
686 reg = chv_padreg(pctrl, offset, CHV_PADCTRL1);
687 return readl(reg) & CHV_PADCTRL1_CFGLOCK;
688 }
689
690 static int chv_get_groups_count(struct pinctrl_dev *pctldev)
691 {
692 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
693
694 return pctrl->community->ngroups;
695 }
696
697 static const char *chv_get_group_name(struct pinctrl_dev *pctldev,
698 unsigned group)
699 {
700 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
701
702 return pctrl->community->groups[group].name;
703 }
704
705 static int chv_get_group_pins(struct pinctrl_dev *pctldev, unsigned group,
706 const unsigned **pins, unsigned *npins)
707 {
708 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
709
710 *pins = pctrl->community->groups[group].pins;
711 *npins = pctrl->community->groups[group].npins;
712 return 0;
713 }
714
715 static void chv_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
716 unsigned offset)
717 {
718 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
719 unsigned long flags;
720 u32 ctrl0, ctrl1;
721 bool locked;
722
723 raw_spin_lock_irqsave(&pctrl->lock, flags);
724
725 ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0));
726 ctrl1 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL1));
727 locked = chv_pad_locked(pctrl, offset);
728
729 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
730
731 if (ctrl0 & CHV_PADCTRL0_GPIOEN) {
732 seq_puts(s, "GPIO ");
733 } else {
734 u32 mode;
735
736 mode = ctrl0 & CHV_PADCTRL0_PMODE_MASK;
737 mode >>= CHV_PADCTRL0_PMODE_SHIFT;
738
739 seq_printf(s, "mode %d ", mode);
740 }
741
742 seq_printf(s, "ctrl0 0x%08x ctrl1 0x%08x", ctrl0, ctrl1);
743
744 if (locked)
745 seq_puts(s, " [LOCKED]");
746 }
747
748 static const struct pinctrl_ops chv_pinctrl_ops = {
749 .get_groups_count = chv_get_groups_count,
750 .get_group_name = chv_get_group_name,
751 .get_group_pins = chv_get_group_pins,
752 .pin_dbg_show = chv_pin_dbg_show,
753 };
754
755 static int chv_get_functions_count(struct pinctrl_dev *pctldev)
756 {
757 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
758
759 return pctrl->community->nfunctions;
760 }
761
762 static const char *chv_get_function_name(struct pinctrl_dev *pctldev,
763 unsigned function)
764 {
765 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
766
767 return pctrl->community->functions[function].name;
768 }
769
770 static int chv_get_function_groups(struct pinctrl_dev *pctldev,
771 unsigned function,
772 const char * const **groups,
773 unsigned * const ngroups)
774 {
775 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
776
777 *groups = pctrl->community->functions[function].groups;
778 *ngroups = pctrl->community->functions[function].ngroups;
779 return 0;
780 }
781
782 static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned function,
783 unsigned group)
784 {
785 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
786 const struct chv_pingroup *grp;
787 unsigned long flags;
788 int i;
789
790 grp = &pctrl->community->groups[group];
791
792 raw_spin_lock_irqsave(&pctrl->lock, flags);
793
794 /* Check first that the pad is not locked */
795 for (i = 0; i < grp->npins; i++) {
796 if (chv_pad_locked(pctrl, grp->pins[i])) {
797 dev_warn(pctrl->dev, "unable to set mode for locked pin %u\n",
798 grp->pins[i]);
799 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
800 return -EBUSY;
801 }
802 }
803
804 for (i = 0; i < grp->npins; i++) {
805 const struct chv_alternate_function *altfunc = &grp->altfunc;
806 int pin = grp->pins[i];
807 void __iomem *reg;
808 u32 value;
809
810 /* Check if there is pin-specific config */
811 if (grp->overrides) {
812 int j;
813
814 for (j = 0; j < grp->noverrides; j++) {
815 if (grp->overrides[j].pin == pin) {
816 altfunc = &grp->overrides[j];
817 break;
818 }
819 }
820 }
821
822 reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
823 value = readl(reg);
824 /* Disable GPIO mode */
825 value &= ~CHV_PADCTRL0_GPIOEN;
826 /* Set to desired mode */
827 value &= ~CHV_PADCTRL0_PMODE_MASK;
828 value |= altfunc->mode << CHV_PADCTRL0_PMODE_SHIFT;
829 chv_writel(value, reg);
830
831 /* Update for invert_oe */
832 reg = chv_padreg(pctrl, pin, CHV_PADCTRL1);
833 value = readl(reg) & ~CHV_PADCTRL1_INVRXTX_MASK;
834 if (altfunc->invert_oe)
835 value |= CHV_PADCTRL1_INVRXTX_TXENABLE;
836 chv_writel(value, reg);
837
838 dev_dbg(pctrl->dev, "configured pin %u mode %u OE %sinverted\n",
839 pin, altfunc->mode, altfunc->invert_oe ? "" : "not ");
840 }
841
842 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
843
844 return 0;
845 }
846
847 static int chv_gpio_request_enable(struct pinctrl_dev *pctldev,
848 struct pinctrl_gpio_range *range,
849 unsigned offset)
850 {
851 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
852 unsigned long flags;
853 void __iomem *reg;
854 u32 value;
855
856 raw_spin_lock_irqsave(&pctrl->lock, flags);
857
858 if (chv_pad_locked(pctrl, offset)) {
859 value = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0));
860 if (!(value & CHV_PADCTRL0_GPIOEN)) {
861 /* Locked so cannot enable */
862 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
863 return -EBUSY;
864 }
865 } else {
866 int i;
867
868 /* Reset the interrupt mapping */
869 for (i = 0; i < ARRAY_SIZE(pctrl->intr_lines); i++) {
870 if (pctrl->intr_lines[i] == offset) {
871 pctrl->intr_lines[i] = 0;
872 break;
873 }
874 }
875
876 /* Disable interrupt generation */
877 reg = chv_padreg(pctrl, offset, CHV_PADCTRL1);
878 value = readl(reg);
879 value &= ~CHV_PADCTRL1_INTWAKECFG_MASK;
880 value &= ~CHV_PADCTRL1_INVRXTX_MASK;
881 chv_writel(value, reg);
882
883 reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
884 value = readl(reg);
885
886 /*
887 * If the pin is in HiZ mode (both TX and RX buffers are
888 * disabled) we turn it to be input now.
889 */
890 if ((value & CHV_PADCTRL0_GPIOCFG_MASK) ==
891 (CHV_PADCTRL0_GPIOCFG_HIZ << CHV_PADCTRL0_GPIOCFG_SHIFT)) {
892 value &= ~CHV_PADCTRL0_GPIOCFG_MASK;
893 value |= CHV_PADCTRL0_GPIOCFG_GPI <<
894 CHV_PADCTRL0_GPIOCFG_SHIFT;
895 }
896
897 /* Switch to a GPIO mode */
898 value |= CHV_PADCTRL0_GPIOEN;
899 chv_writel(value, reg);
900 }
901
902 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
903
904 return 0;
905 }
906
907 static void chv_gpio_disable_free(struct pinctrl_dev *pctldev,
908 struct pinctrl_gpio_range *range,
909 unsigned offset)
910 {
911 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
912 unsigned long flags;
913 void __iomem *reg;
914 u32 value;
915
916 raw_spin_lock_irqsave(&pctrl->lock, flags);
917
918 reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
919 value = readl(reg) & ~CHV_PADCTRL0_GPIOEN;
920 chv_writel(value, reg);
921
922 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
923 }
924
925 static int chv_gpio_set_direction(struct pinctrl_dev *pctldev,
926 struct pinctrl_gpio_range *range,
927 unsigned offset, bool input)
928 {
929 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
930 void __iomem *reg = chv_padreg(pctrl, offset, CHV_PADCTRL0);
931 unsigned long flags;
932 u32 ctrl0;
933
934 raw_spin_lock_irqsave(&pctrl->lock, flags);
935
936 ctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIOCFG_MASK;
937 if (input)
938 ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPI << CHV_PADCTRL0_GPIOCFG_SHIFT;
939 else
940 ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPO << CHV_PADCTRL0_GPIOCFG_SHIFT;
941 chv_writel(ctrl0, reg);
942
943 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
944
945 return 0;
946 }
947
948 static const struct pinmux_ops chv_pinmux_ops = {
949 .get_functions_count = chv_get_functions_count,
950 .get_function_name = chv_get_function_name,
951 .get_function_groups = chv_get_function_groups,
952 .set_mux = chv_pinmux_set_mux,
953 .gpio_request_enable = chv_gpio_request_enable,
954 .gpio_disable_free = chv_gpio_disable_free,
955 .gpio_set_direction = chv_gpio_set_direction,
956 };
957
958 static int chv_config_get(struct pinctrl_dev *pctldev, unsigned pin,
959 unsigned long *config)
960 {
961 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
962 enum pin_config_param param = pinconf_to_config_param(*config);
963 unsigned long flags;
964 u32 ctrl0, ctrl1;
965 u16 arg = 0;
966 u32 term;
967
968 raw_spin_lock_irqsave(&pctrl->lock, flags);
969 ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
970 ctrl1 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1));
971 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
972
973 term = (ctrl0 & CHV_PADCTRL0_TERM_MASK) >> CHV_PADCTRL0_TERM_SHIFT;
974
975 switch (param) {
976 case PIN_CONFIG_BIAS_DISABLE:
977 if (term)
978 return -EINVAL;
979 break;
980
981 case PIN_CONFIG_BIAS_PULL_UP:
982 if (!(ctrl0 & CHV_PADCTRL0_TERM_UP))
983 return -EINVAL;
984
985 switch (term) {
986 case CHV_PADCTRL0_TERM_20K:
987 arg = 20000;
988 break;
989 case CHV_PADCTRL0_TERM_5K:
990 arg = 5000;
991 break;
992 case CHV_PADCTRL0_TERM_1K:
993 arg = 1000;
994 break;
995 }
996
997 break;
998
999 case PIN_CONFIG_BIAS_PULL_DOWN:
1000 if (!term || (ctrl0 & CHV_PADCTRL0_TERM_UP))
1001 return -EINVAL;
1002
1003 switch (term) {
1004 case CHV_PADCTRL0_TERM_20K:
1005 arg = 20000;
1006 break;
1007 case CHV_PADCTRL0_TERM_5K:
1008 arg = 5000;
1009 break;
1010 }
1011
1012 break;
1013
1014 case PIN_CONFIG_DRIVE_OPEN_DRAIN:
1015 if (!(ctrl1 & CHV_PADCTRL1_ODEN))
1016 return -EINVAL;
1017 break;
1018
1019 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: {
1020 u32 cfg;
1021
1022 cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
1023 cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
1024 if (cfg != CHV_PADCTRL0_GPIOCFG_HIZ)
1025 return -EINVAL;
1026
1027 break;
1028 }
1029
1030 default:
1031 return -ENOTSUPP;
1032 }
1033
1034 *config = pinconf_to_config_packed(param, arg);
1035 return 0;
1036 }
1037
1038 static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned pin,
1039 enum pin_config_param param, u16 arg)
1040 {
1041 void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
1042 unsigned long flags;
1043 u32 ctrl0, pull;
1044
1045 raw_spin_lock_irqsave(&pctrl->lock, flags);
1046 ctrl0 = readl(reg);
1047
1048 switch (param) {
1049 case PIN_CONFIG_BIAS_DISABLE:
1050 ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP);
1051 break;
1052
1053 case PIN_CONFIG_BIAS_PULL_UP:
1054 ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP);
1055
1056 switch (arg) {
1057 case 1000:
1058 /* For 1k there is only pull up */
1059 pull = CHV_PADCTRL0_TERM_1K << CHV_PADCTRL0_TERM_SHIFT;
1060 break;
1061 case 5000:
1062 pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT;
1063 break;
1064 case 20000:
1065 pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT;
1066 break;
1067 default:
1068 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1069 return -EINVAL;
1070 }
1071
1072 ctrl0 |= CHV_PADCTRL0_TERM_UP | pull;
1073 break;
1074
1075 case PIN_CONFIG_BIAS_PULL_DOWN:
1076 ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP);
1077
1078 switch (arg) {
1079 case 5000:
1080 pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT;
1081 break;
1082 case 20000:
1083 pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT;
1084 break;
1085 default:
1086 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1087 return -EINVAL;
1088 }
1089
1090 ctrl0 |= pull;
1091 break;
1092
1093 default:
1094 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1095 return -EINVAL;
1096 }
1097
1098 chv_writel(ctrl0, reg);
1099 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1100
1101 return 0;
1102 }
1103
1104 static int chv_config_set(struct pinctrl_dev *pctldev, unsigned pin,
1105 unsigned long *configs, unsigned nconfigs)
1106 {
1107 struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
1108 enum pin_config_param param;
1109 int i, ret;
1110 u16 arg;
1111
1112 if (chv_pad_locked(pctrl, pin))
1113 return -EBUSY;
1114
1115 for (i = 0; i < nconfigs; i++) {
1116 param = pinconf_to_config_param(configs[i]);
1117 arg = pinconf_to_config_argument(configs[i]);
1118
1119 switch (param) {
1120 case PIN_CONFIG_BIAS_DISABLE:
1121 case PIN_CONFIG_BIAS_PULL_UP:
1122 case PIN_CONFIG_BIAS_PULL_DOWN:
1123 ret = chv_config_set_pull(pctrl, pin, param, arg);
1124 if (ret)
1125 return ret;
1126 break;
1127
1128 default:
1129 return -ENOTSUPP;
1130 }
1131
1132 dev_dbg(pctrl->dev, "pin %d set config %d arg %u\n", pin,
1133 param, arg);
1134 }
1135
1136 return 0;
1137 }
1138
1139 static const struct pinconf_ops chv_pinconf_ops = {
1140 .is_generic = true,
1141 .pin_config_set = chv_config_set,
1142 .pin_config_get = chv_config_get,
1143 };
1144
1145 static struct pinctrl_desc chv_pinctrl_desc = {
1146 .pctlops = &chv_pinctrl_ops,
1147 .pmxops = &chv_pinmux_ops,
1148 .confops = &chv_pinconf_ops,
1149 .owner = THIS_MODULE,
1150 };
1151
1152 static int chv_gpio_request(struct gpio_chip *chip, unsigned offset)
1153 {
1154 return pinctrl_request_gpio(chip->base + offset);
1155 }
1156
1157 static void chv_gpio_free(struct gpio_chip *chip, unsigned offset)
1158 {
1159 pinctrl_free_gpio(chip->base + offset);
1160 }
1161
1162 static unsigned chv_gpio_offset_to_pin(struct chv_pinctrl *pctrl,
1163 unsigned offset)
1164 {
1165 return pctrl->community->pins[offset].number;
1166 }
1167
1168 static int chv_gpio_get(struct gpio_chip *chip, unsigned offset)
1169 {
1170 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
1171 int pin = chv_gpio_offset_to_pin(pctrl, offset);
1172 unsigned long flags;
1173 u32 ctrl0, cfg;
1174
1175 raw_spin_lock_irqsave(&pctrl->lock, flags);
1176 ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
1177 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1178
1179 cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
1180 cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
1181
1182 if (cfg == CHV_PADCTRL0_GPIOCFG_GPO)
1183 return !!(ctrl0 & CHV_PADCTRL0_GPIOTXSTATE);
1184 return !!(ctrl0 & CHV_PADCTRL0_GPIORXSTATE);
1185 }
1186
1187 static void chv_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
1188 {
1189 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
1190 unsigned pin = chv_gpio_offset_to_pin(pctrl, offset);
1191 unsigned long flags;
1192 void __iomem *reg;
1193 u32 ctrl0;
1194
1195 raw_spin_lock_irqsave(&pctrl->lock, flags);
1196
1197 reg = chv_padreg(pctrl, pin, CHV_PADCTRL0);
1198 ctrl0 = readl(reg);
1199
1200 if (value)
1201 ctrl0 |= CHV_PADCTRL0_GPIOTXSTATE;
1202 else
1203 ctrl0 &= ~CHV_PADCTRL0_GPIOTXSTATE;
1204
1205 chv_writel(ctrl0, reg);
1206
1207 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1208 }
1209
1210 static int chv_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
1211 {
1212 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(chip);
1213 unsigned pin = chv_gpio_offset_to_pin(pctrl, offset);
1214 u32 ctrl0, direction;
1215 unsigned long flags;
1216
1217 raw_spin_lock_irqsave(&pctrl->lock, flags);
1218 ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
1219 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1220
1221 direction = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK;
1222 direction >>= CHV_PADCTRL0_GPIOCFG_SHIFT;
1223
1224 return direction != CHV_PADCTRL0_GPIOCFG_GPO;
1225 }
1226
1227 static int chv_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
1228 {
1229 return pinctrl_gpio_direction_input(chip->base + offset);
1230 }
1231
1232 static int chv_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
1233 int value)
1234 {
1235 chv_gpio_set(chip, offset, value);
1236 return pinctrl_gpio_direction_output(chip->base + offset);
1237 }
1238
1239 static const struct gpio_chip chv_gpio_chip = {
1240 .owner = THIS_MODULE,
1241 .request = chv_gpio_request,
1242 .free = chv_gpio_free,
1243 .get_direction = chv_gpio_get_direction,
1244 .direction_input = chv_gpio_direction_input,
1245 .direction_output = chv_gpio_direction_output,
1246 .get = chv_gpio_get,
1247 .set = chv_gpio_set,
1248 };
1249
1250 static void chv_gpio_irq_ack(struct irq_data *d)
1251 {
1252 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1253 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
1254 int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d));
1255 u32 intr_line;
1256
1257 raw_spin_lock(&pctrl->lock);
1258
1259 intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
1260 intr_line &= CHV_PADCTRL0_INTSEL_MASK;
1261 intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT;
1262 chv_writel(BIT(intr_line), pctrl->regs + CHV_INTSTAT);
1263
1264 raw_spin_unlock(&pctrl->lock);
1265 }
1266
1267 static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask)
1268 {
1269 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1270 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
1271 int pin = chv_gpio_offset_to_pin(pctrl, irqd_to_hwirq(d));
1272 u32 value, intr_line;
1273 unsigned long flags;
1274
1275 raw_spin_lock_irqsave(&pctrl->lock, flags);
1276
1277 intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
1278 intr_line &= CHV_PADCTRL0_INTSEL_MASK;
1279 intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT;
1280
1281 value = readl(pctrl->regs + CHV_INTMASK);
1282 if (mask)
1283 value &= ~BIT(intr_line);
1284 else
1285 value |= BIT(intr_line);
1286 chv_writel(value, pctrl->regs + CHV_INTMASK);
1287
1288 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1289 }
1290
1291 static void chv_gpio_irq_mask(struct irq_data *d)
1292 {
1293 chv_gpio_irq_mask_unmask(d, true);
1294 }
1295
1296 static void chv_gpio_irq_unmask(struct irq_data *d)
1297 {
1298 chv_gpio_irq_mask_unmask(d, false);
1299 }
1300
1301 static unsigned chv_gpio_irq_startup(struct irq_data *d)
1302 {
1303 /*
1304 * Check if the interrupt has been requested with 0 as triggering
1305 * type. In that case it is assumed that the current values
1306 * programmed to the hardware are used (e.g BIOS configured
1307 * defaults).
1308 *
1309 * In that case ->irq_set_type() will never be called so we need to
1310 * read back the values from hardware now, set correct flow handler
1311 * and update mappings before the interrupt is being used.
1312 */
1313 if (irqd_get_trigger_type(d) == IRQ_TYPE_NONE) {
1314 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1315 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
1316 unsigned offset = irqd_to_hwirq(d);
1317 int pin = chv_gpio_offset_to_pin(pctrl, offset);
1318 irq_flow_handler_t handler;
1319 unsigned long flags;
1320 u32 intsel, value;
1321
1322 raw_spin_lock_irqsave(&pctrl->lock, flags);
1323 intsel = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
1324 intsel &= CHV_PADCTRL0_INTSEL_MASK;
1325 intsel >>= CHV_PADCTRL0_INTSEL_SHIFT;
1326
1327 value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1));
1328 if (value & CHV_PADCTRL1_INTWAKECFG_LEVEL)
1329 handler = handle_level_irq;
1330 else
1331 handler = handle_edge_irq;
1332
1333 if (!pctrl->intr_lines[intsel]) {
1334 irq_set_handler_locked(d, handler);
1335 pctrl->intr_lines[intsel] = offset;
1336 }
1337 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1338 }
1339
1340 chv_gpio_irq_unmask(d);
1341 return 0;
1342 }
1343
1344 static int chv_gpio_irq_type(struct irq_data *d, unsigned type)
1345 {
1346 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
1347 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
1348 unsigned offset = irqd_to_hwirq(d);
1349 int pin = chv_gpio_offset_to_pin(pctrl, offset);
1350 unsigned long flags;
1351 u32 value;
1352
1353 raw_spin_lock_irqsave(&pctrl->lock, flags);
1354
1355 /*
1356 * Pins which can be used as shared interrupt are configured in
1357 * BIOS. Driver trusts BIOS configurations and assigns different
1358 * handler according to the irq type.
1359 *
1360 * Driver needs to save the mapping between each pin and
1361 * its interrupt line.
1362 * 1. If the pin cfg is locked in BIOS:
1363 * Trust BIOS has programmed IntWakeCfg bits correctly,
1364 * driver just needs to save the mapping.
1365 * 2. If the pin cfg is not locked in BIOS:
1366 * Driver programs the IntWakeCfg bits and save the mapping.
1367 */
1368 if (!chv_pad_locked(pctrl, pin)) {
1369 void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL1);
1370
1371 value = readl(reg);
1372 value &= ~CHV_PADCTRL1_INTWAKECFG_MASK;
1373 value &= ~CHV_PADCTRL1_INVRXTX_MASK;
1374
1375 if (type & IRQ_TYPE_EDGE_BOTH) {
1376 if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH)
1377 value |= CHV_PADCTRL1_INTWAKECFG_BOTH;
1378 else if (type & IRQ_TYPE_EDGE_RISING)
1379 value |= CHV_PADCTRL1_INTWAKECFG_RISING;
1380 else if (type & IRQ_TYPE_EDGE_FALLING)
1381 value |= CHV_PADCTRL1_INTWAKECFG_FALLING;
1382 } else if (type & IRQ_TYPE_LEVEL_MASK) {
1383 value |= CHV_PADCTRL1_INTWAKECFG_LEVEL;
1384 if (type & IRQ_TYPE_LEVEL_LOW)
1385 value |= CHV_PADCTRL1_INVRXTX_RXDATA;
1386 }
1387
1388 chv_writel(value, reg);
1389 }
1390
1391 value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0));
1392 value &= CHV_PADCTRL0_INTSEL_MASK;
1393 value >>= CHV_PADCTRL0_INTSEL_SHIFT;
1394
1395 pctrl->intr_lines[value] = offset;
1396
1397 if (type & IRQ_TYPE_EDGE_BOTH)
1398 irq_set_handler_locked(d, handle_edge_irq);
1399 else if (type & IRQ_TYPE_LEVEL_MASK)
1400 irq_set_handler_locked(d, handle_level_irq);
1401
1402 raw_spin_unlock_irqrestore(&pctrl->lock, flags);
1403
1404 return 0;
1405 }
1406
1407 static struct irq_chip chv_gpio_irqchip = {
1408 .name = "chv-gpio",
1409 .irq_startup = chv_gpio_irq_startup,
1410 .irq_ack = chv_gpio_irq_ack,
1411 .irq_mask = chv_gpio_irq_mask,
1412 .irq_unmask = chv_gpio_irq_unmask,
1413 .irq_set_type = chv_gpio_irq_type,
1414 .flags = IRQCHIP_SKIP_SET_WAKE,
1415 };
1416
1417 static void chv_gpio_irq_handler(struct irq_desc *desc)
1418 {
1419 struct gpio_chip *gc = irq_desc_get_handler_data(desc);
1420 struct chv_pinctrl *pctrl = gpiochip_to_pinctrl(gc);
1421 struct irq_chip *chip = irq_desc_get_chip(desc);
1422 unsigned long pending;
1423 u32 intr_line;
1424
1425 chained_irq_enter(chip, desc);
1426
1427 pending = readl(pctrl->regs + CHV_INTSTAT);
1428 for_each_set_bit(intr_line, &pending, 16) {
1429 unsigned irq, offset;
1430
1431 offset = pctrl->intr_lines[intr_line];
1432 irq = irq_find_mapping(gc->irqdomain, offset);
1433 generic_handle_irq(irq);
1434 }
1435
1436 chained_irq_exit(chip, desc);
1437 }
1438
1439 static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq)
1440 {
1441 const struct chv_gpio_pinrange *range;
1442 struct gpio_chip *chip = &pctrl->chip;
1443 int ret, i, offset;
1444
1445 *chip = chv_gpio_chip;
1446
1447 chip->ngpio = pctrl->community->ngpios;
1448 chip->label = dev_name(pctrl->dev);
1449 chip->dev = pctrl->dev;
1450 chip->base = -1;
1451
1452 ret = gpiochip_add(chip);
1453 if (ret) {
1454 dev_err(pctrl->dev, "Failed to register gpiochip\n");
1455 return ret;
1456 }
1457
1458 for (i = 0, offset = 0; i < pctrl->community->ngpio_ranges; i++) {
1459 range = &pctrl->community->gpio_ranges[i];
1460 ret = gpiochip_add_pin_range(chip, dev_name(pctrl->dev), offset,
1461 range->base, range->npins);
1462 if (ret) {
1463 dev_err(pctrl->dev, "failed to add GPIO pin range\n");
1464 goto fail;
1465 }
1466
1467 offset += range->npins;
1468 }
1469
1470 /* Mask and clear all interrupts */
1471 chv_writel(0, pctrl->regs + CHV_INTMASK);
1472 chv_writel(0xffff, pctrl->regs + CHV_INTSTAT);
1473
1474 ret = gpiochip_irqchip_add(chip, &chv_gpio_irqchip, 0,
1475 handle_simple_irq, IRQ_TYPE_NONE);
1476 if (ret) {
1477 dev_err(pctrl->dev, "failed to add IRQ chip\n");
1478 goto fail;
1479 }
1480
1481 gpiochip_set_chained_irqchip(chip, &chv_gpio_irqchip, irq,
1482 chv_gpio_irq_handler);
1483 return 0;
1484
1485 fail:
1486 gpiochip_remove(chip);
1487
1488 return ret;
1489 }
1490
1491 static int chv_pinctrl_probe(struct platform_device *pdev)
1492 {
1493 struct chv_pinctrl *pctrl;
1494 struct acpi_device *adev;
1495 struct resource *res;
1496 int ret, irq, i;
1497
1498 adev = ACPI_COMPANION(&pdev->dev);
1499 if (!adev)
1500 return -ENODEV;
1501
1502 pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
1503 if (!pctrl)
1504 return -ENOMEM;
1505
1506 for (i = 0; i < ARRAY_SIZE(chv_communities); i++)
1507 if (!strcmp(adev->pnp.unique_id, chv_communities[i]->uid)) {
1508 pctrl->community = chv_communities[i];
1509 break;
1510 }
1511 if (i == ARRAY_SIZE(chv_communities))
1512 return -ENODEV;
1513
1514 raw_spin_lock_init(&pctrl->lock);
1515 pctrl->dev = &pdev->dev;
1516
1517 #ifdef CONFIG_PM_SLEEP
1518 pctrl->saved_pin_context = devm_kcalloc(pctrl->dev,
1519 pctrl->community->npins, sizeof(*pctrl->saved_pin_context),
1520 GFP_KERNEL);
1521 if (!pctrl->saved_pin_context)
1522 return -ENOMEM;
1523 #endif
1524
1525 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1526 pctrl->regs = devm_ioremap_resource(&pdev->dev, res);
1527 if (IS_ERR(pctrl->regs))
1528 return PTR_ERR(pctrl->regs);
1529
1530 irq = platform_get_irq(pdev, 0);
1531 if (irq < 0) {
1532 dev_err(&pdev->dev, "failed to get interrupt number\n");
1533 return irq;
1534 }
1535
1536 pctrl->pctldesc = chv_pinctrl_desc;
1537 pctrl->pctldesc.name = dev_name(&pdev->dev);
1538 pctrl->pctldesc.pins = pctrl->community->pins;
1539 pctrl->pctldesc.npins = pctrl->community->npins;
1540
1541 pctrl->pctldev = pinctrl_register(&pctrl->pctldesc, &pdev->dev, pctrl);
1542 if (IS_ERR(pctrl->pctldev)) {
1543 dev_err(&pdev->dev, "failed to register pinctrl driver\n");
1544 return PTR_ERR(pctrl->pctldev);
1545 }
1546
1547 ret = chv_gpio_probe(pctrl, irq);
1548 if (ret) {
1549 pinctrl_unregister(pctrl->pctldev);
1550 return ret;
1551 }
1552
1553 platform_set_drvdata(pdev, pctrl);
1554
1555 return 0;
1556 }
1557
1558 static int chv_pinctrl_remove(struct platform_device *pdev)
1559 {
1560 struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
1561
1562 gpiochip_remove(&pctrl->chip);
1563 pinctrl_unregister(pctrl->pctldev);
1564
1565 return 0;
1566 }
1567
1568 #ifdef CONFIG_PM_SLEEP
1569 static int chv_pinctrl_suspend(struct device *dev)
1570 {
1571 struct platform_device *pdev = to_platform_device(dev);
1572 struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
1573 int i;
1574
1575 pctrl->saved_intmask = readl(pctrl->regs + CHV_INTMASK);
1576
1577 for (i = 0; i < pctrl->community->npins; i++) {
1578 const struct pinctrl_pin_desc *desc;
1579 struct chv_pin_context *ctx;
1580 void __iomem *reg;
1581
1582 desc = &pctrl->community->pins[i];
1583 if (chv_pad_locked(pctrl, desc->number))
1584 continue;
1585
1586 ctx = &pctrl->saved_pin_context[i];
1587
1588 reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0);
1589 ctx->padctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE;
1590
1591 reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1);
1592 ctx->padctrl1 = readl(reg);
1593 }
1594
1595 return 0;
1596 }
1597
1598 static int chv_pinctrl_resume(struct device *dev)
1599 {
1600 struct platform_device *pdev = to_platform_device(dev);
1601 struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
1602 int i;
1603
1604 /*
1605 * Mask all interrupts before restoring per-pin configuration
1606 * registers because we don't know in which state BIOS left them
1607 * upon exiting suspend.
1608 */
1609 chv_writel(0, pctrl->regs + CHV_INTMASK);
1610
1611 for (i = 0; i < pctrl->community->npins; i++) {
1612 const struct pinctrl_pin_desc *desc;
1613 const struct chv_pin_context *ctx;
1614 void __iomem *reg;
1615 u32 val;
1616
1617 desc = &pctrl->community->pins[i];
1618 if (chv_pad_locked(pctrl, desc->number))
1619 continue;
1620
1621 ctx = &pctrl->saved_pin_context[i];
1622
1623 /* Only restore if our saved state differs from the current */
1624 reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0);
1625 val = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE;
1626 if (ctx->padctrl0 != val) {
1627 chv_writel(ctx->padctrl0, reg);
1628 dev_dbg(pctrl->dev, "restored pin %2u ctrl0 0x%08x\n",
1629 desc->number, readl(reg));
1630 }
1631
1632 reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1);
1633 val = readl(reg);
1634 if (ctx->padctrl1 != val) {
1635 chv_writel(ctx->padctrl1, reg);
1636 dev_dbg(pctrl->dev, "restored pin %2u ctrl1 0x%08x\n",
1637 desc->number, readl(reg));
1638 }
1639 }
1640
1641 /*
1642 * Now that all pins are restored to known state, we can restore
1643 * the interrupt mask register as well.
1644 */
1645 chv_writel(0xffff, pctrl->regs + CHV_INTSTAT);
1646 chv_writel(pctrl->saved_intmask, pctrl->regs + CHV_INTMASK);
1647
1648 return 0;
1649 }
1650 #endif
1651
1652 static const struct dev_pm_ops chv_pinctrl_pm_ops = {
1653 SET_LATE_SYSTEM_SLEEP_PM_OPS(chv_pinctrl_suspend, chv_pinctrl_resume)
1654 };
1655
1656 static const struct acpi_device_id chv_pinctrl_acpi_match[] = {
1657 { "INT33FF" },
1658 { }
1659 };
1660 MODULE_DEVICE_TABLE(acpi, chv_pinctrl_acpi_match);
1661
1662 static struct platform_driver chv_pinctrl_driver = {
1663 .probe = chv_pinctrl_probe,
1664 .remove = chv_pinctrl_remove,
1665 .driver = {
1666 .name = "cherryview-pinctrl",
1667 .pm = &chv_pinctrl_pm_ops,
1668 .acpi_match_table = chv_pinctrl_acpi_match,
1669 },
1670 };
1671
1672 static int __init chv_pinctrl_init(void)
1673 {
1674 return platform_driver_register(&chv_pinctrl_driver);
1675 }
1676 subsys_initcall(chv_pinctrl_init);
1677
1678 static void __exit chv_pinctrl_exit(void)
1679 {
1680 platform_driver_unregister(&chv_pinctrl_driver);
1681 }
1682 module_exit(chv_pinctrl_exit);
1683
1684 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
1685 MODULE_DESCRIPTION("Intel Cherryview/Braswell pinctrl driver");
1686 MODULE_LICENSE("GPL v2");
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