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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 | ||
9eb457b5 MW |
151 | struct chv_pin_context { |
152 | u32 padctrl0; | |
153 | u32 padctrl1; | |
154 | }; | |
155 | ||
6e08d6bb MW |
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; | |
109fdf15 | 177 | raw_spinlock_t lock; |
6e08d6bb MW |
178 | unsigned intr_lines[16]; |
179 | const struct chv_community *community; | |
9eb457b5 MW |
180 | u32 saved_intmask; |
181 | struct chv_pin_context *saved_pin_context; | |
6e08d6bb MW |
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 | ||
109fdf15 | 723 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 729 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 792 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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]); | |
109fdf15 | 799 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 842 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 856 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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 */ | |
109fdf15 | 862 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
6e08d6bb | 883 | reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); |
2479c730 MW |
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; | |
6e08d6bb MW |
899 | chv_writel(value, reg); |
900 | } | |
901 | ||
109fdf15 | 902 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 916 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
917 | |
918 | reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); | |
919 | value = readl(reg) & ~CHV_PADCTRL0_GPIOEN; | |
920 | chv_writel(value, reg); | |
921 | ||
109fdf15 | 922 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 934 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 943 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 968 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
969 | ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); |
970 | ctrl1 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1)); | |
109fdf15 | 971 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 1045 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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: | |
109fdf15 | 1068 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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: | |
109fdf15 | 1086 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
1087 | return -EINVAL; |
1088 | } | |
1089 | ||
1090 | ctrl0 |= pull; | |
1091 | break; | |
1092 | ||
1093 | default: | |
109fdf15 | 1094 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
1095 | return -EINVAL; |
1096 | } | |
1097 | ||
1098 | chv_writel(ctrl0, reg); | |
109fdf15 | 1099 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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); | |
4585b000 | 1172 | unsigned long flags; |
6e08d6bb MW |
1173 | u32 ctrl0, cfg; |
1174 | ||
109fdf15 | 1175 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb | 1176 | ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); |
109fdf15 | 1177 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 1195 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 1207 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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; | |
4585b000 | 1215 | unsigned long flags; |
6e08d6bb | 1216 | |
109fdf15 | 1217 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb | 1218 | ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); |
109fdf15 | 1219 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | { | |
549e783f | 1235 | chv_gpio_set(chip, offset, value); |
6e08d6bb MW |
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 | ||
109fdf15 | 1257 | raw_spin_lock(&pctrl->lock); |
6e08d6bb MW |
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 | ||
109fdf15 | 1264 | raw_spin_unlock(&pctrl->lock); |
6e08d6bb MW |
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 | ||
109fdf15 | 1275 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
109fdf15 | 1288 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
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 | ||
e6c906de MW |
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 | ||
109fdf15 | 1322 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
e6c906de MW |
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 | ||
e6c906de | 1333 | if (!pctrl->intr_lines[intsel]) { |
a4e3f783 | 1334 | irq_set_handler_locked(d, handler); |
e6c906de MW |
1335 | pctrl->intr_lines[intsel] = offset; |
1336 | } | |
109fdf15 | 1337 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
e6c906de MW |
1338 | } |
1339 | ||
1340 | chv_gpio_irq_unmask(d); | |
1341 | return 0; | |
1342 | } | |
1343 | ||
6e08d6bb MW |
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 | ||
109fdf15 | 1353 | raw_spin_lock_irqsave(&pctrl->lock, flags); |
6e08d6bb MW |
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) | |
a4e3f783 | 1398 | irq_set_handler_locked(d, handle_edge_irq); |
6e08d6bb | 1399 | else if (type & IRQ_TYPE_LEVEL_MASK) |
a4e3f783 | 1400 | irq_set_handler_locked(d, handle_level_irq); |
6e08d6bb | 1401 | |
109fdf15 | 1402 | raw_spin_unlock_irqrestore(&pctrl->lock, flags); |
6e08d6bb MW |
1403 | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | static struct irq_chip chv_gpio_irqchip = { | |
1408 | .name = "chv-gpio", | |
e6c906de | 1409 | .irq_startup = chv_gpio_irq_startup, |
6e08d6bb MW |
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(unsigned irq, 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); | |
5663bb27 | 1421 | struct irq_chip *chip = irq_desc_get_chip(desc); |
6e08d6bb MW |
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 | ||
109fdf15 | 1514 | raw_spin_lock_init(&pctrl->lock); |
6e08d6bb MW |
1515 | pctrl->dev = &pdev->dev; |
1516 | ||
9eb457b5 MW |
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 | ||
6e08d6bb MW |
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); | |
323de9ef | 1542 | if (IS_ERR(pctrl->pctldev)) { |
6e08d6bb | 1543 | dev_err(&pdev->dev, "failed to register pinctrl driver\n"); |
323de9ef | 1544 | return PTR_ERR(pctrl->pctldev); |
6e08d6bb MW |
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 | ||
9eb457b5 MW |
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 | ||
6e08d6bb MW |
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", | |
9eb457b5 | 1667 | .pm = &chv_pinctrl_pm_ops, |
6e08d6bb MW |
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"); |