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875a92b3 | 1 | // SPDX-License-Identifier: GPL-2.0 |
6e08d6bb MW |
2 | /* |
3 | * Cherryview/Braswell pinctrl driver | |
4 | * | |
5 | * Copyright (C) 2014, Intel Corporation | |
6 | * Author: Mika Westerberg <mika.westerberg@linux.intel.com> | |
7 | * | |
8 | * This driver is based on the original Cherryview GPIO driver by | |
9 | * Ning Li <ning.li@intel.com> | |
10 | * Alan Cox <alan@linux.intel.com> | |
6e08d6bb MW |
11 | */ |
12 | ||
994f8865 | 13 | #include <linux/acpi.h> |
70365027 | 14 | #include <linux/dmi.h> |
994f8865 | 15 | #include <linux/gpio/driver.h> |
6e08d6bb MW |
16 | #include <linux/kernel.h> |
17 | #include <linux/module.h> | |
994f8865 | 18 | #include <linux/platform_device.h> |
6e08d6bb | 19 | #include <linux/types.h> |
994f8865 | 20 | |
6e08d6bb MW |
21 | #include <linux/pinctrl/pinctrl.h> |
22 | #include <linux/pinctrl/pinmux.h> | |
23 | #include <linux/pinctrl/pinconf.h> | |
24 | #include <linux/pinctrl/pinconf-generic.h> | |
6e08d6bb | 25 | |
5458b7ce AS |
26 | #include "pinctrl-intel.h" |
27 | ||
6e08d6bb MW |
28 | #define CHV_INTSTAT 0x300 |
29 | #define CHV_INTMASK 0x380 | |
30 | ||
31 | #define FAMILY_PAD_REGS_OFF 0x4400 | |
32 | #define FAMILY_PAD_REGS_SIZE 0x400 | |
33 | #define MAX_FAMILY_PAD_GPIO_NO 15 | |
34 | #define GPIO_REGS_SIZE 8 | |
35 | ||
36 | #define CHV_PADCTRL0 0x000 | |
37 | #define CHV_PADCTRL0_INTSEL_SHIFT 28 | |
38 | #define CHV_PADCTRL0_INTSEL_MASK (0xf << CHV_PADCTRL0_INTSEL_SHIFT) | |
39 | #define CHV_PADCTRL0_TERM_UP BIT(23) | |
40 | #define CHV_PADCTRL0_TERM_SHIFT 20 | |
41 | #define CHV_PADCTRL0_TERM_MASK (7 << CHV_PADCTRL0_TERM_SHIFT) | |
42 | #define CHV_PADCTRL0_TERM_20K 1 | |
43 | #define CHV_PADCTRL0_TERM_5K 2 | |
44 | #define CHV_PADCTRL0_TERM_1K 4 | |
45 | #define CHV_PADCTRL0_PMODE_SHIFT 16 | |
46 | #define CHV_PADCTRL0_PMODE_MASK (0xf << CHV_PADCTRL0_PMODE_SHIFT) | |
47 | #define CHV_PADCTRL0_GPIOEN BIT(15) | |
48 | #define CHV_PADCTRL0_GPIOCFG_SHIFT 8 | |
49 | #define CHV_PADCTRL0_GPIOCFG_MASK (7 << CHV_PADCTRL0_GPIOCFG_SHIFT) | |
50 | #define CHV_PADCTRL0_GPIOCFG_GPIO 0 | |
51 | #define CHV_PADCTRL0_GPIOCFG_GPO 1 | |
52 | #define CHV_PADCTRL0_GPIOCFG_GPI 2 | |
53 | #define CHV_PADCTRL0_GPIOCFG_HIZ 3 | |
54 | #define CHV_PADCTRL0_GPIOTXSTATE BIT(1) | |
55 | #define CHV_PADCTRL0_GPIORXSTATE BIT(0) | |
56 | ||
57 | #define CHV_PADCTRL1 0x004 | |
58 | #define CHV_PADCTRL1_CFGLOCK BIT(31) | |
59 | #define CHV_PADCTRL1_INVRXTX_SHIFT 4 | |
60 | #define CHV_PADCTRL1_INVRXTX_MASK (0xf << CHV_PADCTRL1_INVRXTX_SHIFT) | |
61 | #define CHV_PADCTRL1_INVRXTX_TXENABLE (2 << CHV_PADCTRL1_INVRXTX_SHIFT) | |
62 | #define CHV_PADCTRL1_ODEN BIT(3) | |
63 | #define CHV_PADCTRL1_INVRXTX_RXDATA (4 << CHV_PADCTRL1_INVRXTX_SHIFT) | |
64 | #define CHV_PADCTRL1_INTWAKECFG_MASK 7 | |
65 | #define CHV_PADCTRL1_INTWAKECFG_FALLING 1 | |
66 | #define CHV_PADCTRL1_INTWAKECFG_RISING 2 | |
67 | #define CHV_PADCTRL1_INTWAKECFG_BOTH 3 | |
68 | #define CHV_PADCTRL1_INTWAKECFG_LEVEL 4 | |
69 | ||
70 | /** | |
71 | * struct chv_alternate_function - A per group or per pin alternate function | |
72 | * @pin: Pin number (only used in per pin configs) | |
73 | * @mode: Mode the pin should be set in | |
74 | * @invert_oe: Invert OE for this pin | |
75 | */ | |
76 | struct chv_alternate_function { | |
4e737af8 | 77 | unsigned int pin; |
6e08d6bb MW |
78 | u8 mode; |
79 | bool invert_oe; | |
80 | }; | |
81 | ||
82 | /** | |
83 | * struct chv_pincgroup - describes a CHV pin group | |
84 | * @name: Name of the group | |
85 | * @pins: An array of pins in this group | |
86 | * @npins: Number of pins in this group | |
87 | * @altfunc: Alternate function applied to all pins in this group | |
88 | * @overrides: Alternate function override per pin or %NULL if not used | |
89 | * @noverrides: Number of per pin alternate function overrides if | |
90 | * @overrides != NULL. | |
91 | */ | |
92 | struct chv_pingroup { | |
93 | const char *name; | |
4e737af8 | 94 | const unsigned int *pins; |
6e08d6bb MW |
95 | size_t npins; |
96 | struct chv_alternate_function altfunc; | |
97 | const struct chv_alternate_function *overrides; | |
98 | size_t noverrides; | |
99 | }; | |
100 | ||
6e08d6bb MW |
101 | /** |
102 | * struct chv_gpio_pinrange - A range of pins that can be used as GPIOs | |
103 | * @base: Start pin number | |
104 | * @npins: Number of pins in this range | |
105 | */ | |
106 | struct chv_gpio_pinrange { | |
4e737af8 AS |
107 | unsigned int base; |
108 | unsigned int npins; | |
6e08d6bb MW |
109 | }; |
110 | ||
111 | /** | |
112 | * struct chv_community - A community specific configuration | |
113 | * @uid: ACPI _UID used to match the community | |
114 | * @pins: All pins in this community | |
115 | * @npins: Number of pins | |
116 | * @groups: All groups in this community | |
117 | * @ngroups: Number of groups | |
118 | * @functions: All functions in this community | |
119 | * @nfunctions: Number of functions | |
6e08d6bb MW |
120 | * @gpio_ranges: An array of GPIO ranges in this community |
121 | * @ngpio_ranges: Number of GPIO ranges | |
47c950d1 | 122 | * @nirqs: Total number of IRQs this community can generate |
a919684f | 123 | * @acpi_space_id: An address space ID for ACPI OpRegion handler |
6e08d6bb MW |
124 | */ |
125 | struct chv_community { | |
126 | const char *uid; | |
127 | const struct pinctrl_pin_desc *pins; | |
128 | size_t npins; | |
129 | const struct chv_pingroup *groups; | |
130 | size_t ngroups; | |
5458b7ce | 131 | const struct intel_function *functions; |
6e08d6bb MW |
132 | size_t nfunctions; |
133 | const struct chv_gpio_pinrange *gpio_ranges; | |
134 | size_t ngpio_ranges; | |
47c950d1 | 135 | size_t nirqs; |
a0b02859 | 136 | acpi_adr_space_type acpi_space_id; |
6e08d6bb MW |
137 | }; |
138 | ||
9eb457b5 MW |
139 | struct chv_pin_context { |
140 | u32 padctrl0; | |
141 | u32 padctrl1; | |
142 | }; | |
143 | ||
6e08d6bb MW |
144 | /** |
145 | * struct chv_pinctrl - CHV pinctrl private structure | |
146 | * @dev: Pointer to the parent device | |
147 | * @pctldesc: Pin controller description | |
148 | * @pctldev: Pointer to the pin controller device | |
149 | * @chip: GPIO chip in this pin controller | |
e58e1773 | 150 | * @irqchip: IRQ chip in this pin controller |
6e08d6bb | 151 | * @regs: MMIO registers |
b9a19bdb | 152 | * @irq: Our parent irq |
6e08d6bb MW |
153 | * @intr_lines: Stores mapping between 16 HW interrupt wires and GPIO |
154 | * offset (in GPIO number space) | |
155 | * @community: Community this pinctrl instance represents | |
a919684f AS |
156 | * @saved_intmask: Interrupt mask saved for system sleep |
157 | * @saved_pin_context: Pointer to a context of the pins saved for system sleep | |
6e08d6bb MW |
158 | * |
159 | * The first group in @groups is expected to contain all pins that can be | |
160 | * used as GPIOs. | |
161 | */ | |
162 | struct chv_pinctrl { | |
163 | struct device *dev; | |
164 | struct pinctrl_desc pctldesc; | |
165 | struct pinctrl_dev *pctldev; | |
166 | struct gpio_chip chip; | |
e58e1773 | 167 | struct irq_chip irqchip; |
6e08d6bb | 168 | void __iomem *regs; |
b9a19bdb | 169 | unsigned int irq; |
8ae93b5e | 170 | unsigned int intr_lines[16]; |
6e08d6bb | 171 | const struct chv_community *community; |
9eb457b5 MW |
172 | u32 saved_intmask; |
173 | struct chv_pin_context *saved_pin_context; | |
6e08d6bb MW |
174 | }; |
175 | ||
6e08d6bb MW |
176 | #define ALTERNATE_FUNCTION(p, m, i) \ |
177 | { \ | |
178 | .pin = (p), \ | |
179 | .mode = (m), \ | |
180 | .invert_oe = (i), \ | |
181 | } | |
182 | ||
5458b7ce | 183 | #define PIN_GROUP_WITH_ALT(n, p, m, i) \ |
6e08d6bb MW |
184 | { \ |
185 | .name = (n), \ | |
186 | .pins = (p), \ | |
187 | .npins = ARRAY_SIZE((p)), \ | |
188 | .altfunc.mode = (m), \ | |
189 | .altfunc.invert_oe = (i), \ | |
190 | } | |
191 | ||
192 | #define PIN_GROUP_WITH_OVERRIDE(n, p, m, i, o) \ | |
193 | { \ | |
194 | .name = (n), \ | |
195 | .pins = (p), \ | |
196 | .npins = ARRAY_SIZE((p)), \ | |
197 | .altfunc.mode = (m), \ | |
198 | .altfunc.invert_oe = (i), \ | |
199 | .overrides = (o), \ | |
200 | .noverrides = ARRAY_SIZE((o)), \ | |
201 | } | |
202 | ||
6e08d6bb MW |
203 | #define GPIO_PINRANGE(start, end) \ |
204 | { \ | |
205 | .base = (start), \ | |
206 | .npins = (end) - (start) + 1, \ | |
207 | } | |
208 | ||
209 | static const struct pinctrl_pin_desc southwest_pins[] = { | |
210 | PINCTRL_PIN(0, "FST_SPI_D2"), | |
211 | PINCTRL_PIN(1, "FST_SPI_D0"), | |
212 | PINCTRL_PIN(2, "FST_SPI_CLK"), | |
213 | PINCTRL_PIN(3, "FST_SPI_D3"), | |
214 | PINCTRL_PIN(4, "FST_SPI_CS1_B"), | |
215 | PINCTRL_PIN(5, "FST_SPI_D1"), | |
216 | PINCTRL_PIN(6, "FST_SPI_CS0_B"), | |
217 | PINCTRL_PIN(7, "FST_SPI_CS2_B"), | |
218 | ||
219 | PINCTRL_PIN(15, "UART1_RTS_B"), | |
220 | PINCTRL_PIN(16, "UART1_RXD"), | |
221 | PINCTRL_PIN(17, "UART2_RXD"), | |
222 | PINCTRL_PIN(18, "UART1_CTS_B"), | |
223 | PINCTRL_PIN(19, "UART2_RTS_B"), | |
224 | PINCTRL_PIN(20, "UART1_TXD"), | |
225 | PINCTRL_PIN(21, "UART2_TXD"), | |
226 | PINCTRL_PIN(22, "UART2_CTS_B"), | |
227 | ||
228 | PINCTRL_PIN(30, "MF_HDA_CLK"), | |
229 | PINCTRL_PIN(31, "MF_HDA_RSTB"), | |
230 | PINCTRL_PIN(32, "MF_HDA_SDIO"), | |
231 | PINCTRL_PIN(33, "MF_HDA_SDO"), | |
232 | PINCTRL_PIN(34, "MF_HDA_DOCKRSTB"), | |
233 | PINCTRL_PIN(35, "MF_HDA_SYNC"), | |
234 | PINCTRL_PIN(36, "MF_HDA_SDI1"), | |
235 | PINCTRL_PIN(37, "MF_HDA_DOCKENB"), | |
236 | ||
237 | PINCTRL_PIN(45, "I2C5_SDA"), | |
238 | PINCTRL_PIN(46, "I2C4_SDA"), | |
239 | PINCTRL_PIN(47, "I2C6_SDA"), | |
240 | PINCTRL_PIN(48, "I2C5_SCL"), | |
241 | PINCTRL_PIN(49, "I2C_NFC_SDA"), | |
242 | PINCTRL_PIN(50, "I2C4_SCL"), | |
243 | PINCTRL_PIN(51, "I2C6_SCL"), | |
244 | PINCTRL_PIN(52, "I2C_NFC_SCL"), | |
245 | ||
246 | PINCTRL_PIN(60, "I2C1_SDA"), | |
247 | PINCTRL_PIN(61, "I2C0_SDA"), | |
248 | PINCTRL_PIN(62, "I2C2_SDA"), | |
249 | PINCTRL_PIN(63, "I2C1_SCL"), | |
250 | PINCTRL_PIN(64, "I2C3_SDA"), | |
251 | PINCTRL_PIN(65, "I2C0_SCL"), | |
252 | PINCTRL_PIN(66, "I2C2_SCL"), | |
253 | PINCTRL_PIN(67, "I2C3_SCL"), | |
254 | ||
255 | PINCTRL_PIN(75, "SATA_GP0"), | |
256 | PINCTRL_PIN(76, "SATA_GP1"), | |
257 | PINCTRL_PIN(77, "SATA_LEDN"), | |
258 | PINCTRL_PIN(78, "SATA_GP2"), | |
259 | PINCTRL_PIN(79, "MF_SMB_ALERTB"), | |
260 | PINCTRL_PIN(80, "SATA_GP3"), | |
261 | PINCTRL_PIN(81, "MF_SMB_CLK"), | |
262 | PINCTRL_PIN(82, "MF_SMB_DATA"), | |
263 | ||
264 | PINCTRL_PIN(90, "PCIE_CLKREQ0B"), | |
265 | PINCTRL_PIN(91, "PCIE_CLKREQ1B"), | |
266 | PINCTRL_PIN(92, "GP_SSP_2_CLK"), | |
267 | PINCTRL_PIN(93, "PCIE_CLKREQ2B"), | |
268 | PINCTRL_PIN(94, "GP_SSP_2_RXD"), | |
269 | PINCTRL_PIN(95, "PCIE_CLKREQ3B"), | |
270 | PINCTRL_PIN(96, "GP_SSP_2_FS"), | |
271 | PINCTRL_PIN(97, "GP_SSP_2_TXD"), | |
272 | }; | |
273 | ||
6e08d6bb MW |
274 | static const unsigned southwest_uart0_pins[] = { 16, 20 }; |
275 | static const unsigned southwest_uart1_pins[] = { 15, 16, 18, 20 }; | |
276 | static const unsigned southwest_uart2_pins[] = { 17, 19, 21, 22 }; | |
277 | static const unsigned southwest_i2c0_pins[] = { 61, 65 }; | |
278 | static const unsigned southwest_hda_pins[] = { 30, 31, 32, 33, 34, 35, 36, 37 }; | |
279 | static const unsigned southwest_lpe_pins[] = { | |
280 | 30, 31, 32, 33, 34, 35, 36, 37, 92, 94, 96, 97, | |
281 | }; | |
282 | static const unsigned southwest_i2c1_pins[] = { 60, 63 }; | |
283 | static const unsigned southwest_i2c2_pins[] = { 62, 66 }; | |
284 | static const unsigned southwest_i2c3_pins[] = { 64, 67 }; | |
285 | static const unsigned southwest_i2c4_pins[] = { 46, 50 }; | |
286 | static const unsigned southwest_i2c5_pins[] = { 45, 48 }; | |
287 | static const unsigned southwest_i2c6_pins[] = { 47, 51 }; | |
288 | static const unsigned southwest_i2c_nfc_pins[] = { 49, 52 }; | |
6e08d6bb MW |
289 | static const unsigned southwest_spi3_pins[] = { 76, 79, 80, 81, 82 }; |
290 | ||
291 | /* LPE I2S TXD pins need to have invert_oe set */ | |
292 | static const struct chv_alternate_function southwest_lpe_altfuncs[] = { | |
293 | ALTERNATE_FUNCTION(30, 1, true), | |
294 | ALTERNATE_FUNCTION(34, 1, true), | |
295 | ALTERNATE_FUNCTION(97, 1, true), | |
296 | }; | |
297 | ||
298 | /* | |
299 | * Two spi3 chipselects are available in different mode than the main spi3 | |
300 | * functionality, which is using mode 1. | |
301 | */ | |
302 | static const struct chv_alternate_function southwest_spi3_altfuncs[] = { | |
303 | ALTERNATE_FUNCTION(76, 3, false), | |
304 | ALTERNATE_FUNCTION(80, 3, false), | |
305 | }; | |
306 | ||
307 | static const struct chv_pingroup southwest_groups[] = { | |
5458b7ce AS |
308 | PIN_GROUP_WITH_ALT("uart0_grp", southwest_uart0_pins, 2, false), |
309 | PIN_GROUP_WITH_ALT("uart1_grp", southwest_uart1_pins, 1, false), | |
310 | PIN_GROUP_WITH_ALT("uart2_grp", southwest_uart2_pins, 1, false), | |
311 | PIN_GROUP_WITH_ALT("hda_grp", southwest_hda_pins, 2, false), | |
312 | PIN_GROUP_WITH_ALT("i2c0_grp", southwest_i2c0_pins, 1, true), | |
313 | PIN_GROUP_WITH_ALT("i2c1_grp", southwest_i2c1_pins, 1, true), | |
314 | PIN_GROUP_WITH_ALT("i2c2_grp", southwest_i2c2_pins, 1, true), | |
315 | PIN_GROUP_WITH_ALT("i2c3_grp", southwest_i2c3_pins, 1, true), | |
316 | PIN_GROUP_WITH_ALT("i2c4_grp", southwest_i2c4_pins, 1, true), | |
317 | PIN_GROUP_WITH_ALT("i2c5_grp", southwest_i2c5_pins, 1, true), | |
318 | PIN_GROUP_WITH_ALT("i2c6_grp", southwest_i2c6_pins, 1, true), | |
319 | PIN_GROUP_WITH_ALT("i2c_nfc_grp", southwest_i2c_nfc_pins, 2, true), | |
6e08d6bb MW |
320 | |
321 | PIN_GROUP_WITH_OVERRIDE("lpe_grp", southwest_lpe_pins, 1, false, | |
322 | southwest_lpe_altfuncs), | |
323 | PIN_GROUP_WITH_OVERRIDE("spi3_grp", southwest_spi3_pins, 2, false, | |
324 | southwest_spi3_altfuncs), | |
325 | }; | |
326 | ||
327 | static const char * const southwest_uart0_groups[] = { "uart0_grp" }; | |
328 | static const char * const southwest_uart1_groups[] = { "uart1_grp" }; | |
329 | static const char * const southwest_uart2_groups[] = { "uart2_grp" }; | |
330 | static const char * const southwest_hda_groups[] = { "hda_grp" }; | |
331 | static const char * const southwest_lpe_groups[] = { "lpe_grp" }; | |
332 | static const char * const southwest_i2c0_groups[] = { "i2c0_grp" }; | |
333 | static const char * const southwest_i2c1_groups[] = { "i2c1_grp" }; | |
334 | static const char * const southwest_i2c2_groups[] = { "i2c2_grp" }; | |
335 | static const char * const southwest_i2c3_groups[] = { "i2c3_grp" }; | |
336 | static const char * const southwest_i2c4_groups[] = { "i2c4_grp" }; | |
337 | static const char * const southwest_i2c5_groups[] = { "i2c5_grp" }; | |
338 | static const char * const southwest_i2c6_groups[] = { "i2c6_grp" }; | |
339 | static const char * const southwest_i2c_nfc_groups[] = { "i2c_nfc_grp" }; | |
340 | static const char * const southwest_spi3_groups[] = { "spi3_grp" }; | |
341 | ||
342 | /* | |
343 | * Only do pinmuxing for certain LPSS devices for now. Rest of the pins are | |
344 | * enabled only as GPIOs. | |
345 | */ | |
5458b7ce | 346 | static const struct intel_function southwest_functions[] = { |
6e08d6bb MW |
347 | FUNCTION("uart0", southwest_uart0_groups), |
348 | FUNCTION("uart1", southwest_uart1_groups), | |
349 | FUNCTION("uart2", southwest_uart2_groups), | |
350 | FUNCTION("hda", southwest_hda_groups), | |
351 | FUNCTION("lpe", southwest_lpe_groups), | |
352 | FUNCTION("i2c0", southwest_i2c0_groups), | |
353 | FUNCTION("i2c1", southwest_i2c1_groups), | |
354 | FUNCTION("i2c2", southwest_i2c2_groups), | |
355 | FUNCTION("i2c3", southwest_i2c3_groups), | |
356 | FUNCTION("i2c4", southwest_i2c4_groups), | |
357 | FUNCTION("i2c5", southwest_i2c5_groups), | |
358 | FUNCTION("i2c6", southwest_i2c6_groups), | |
359 | FUNCTION("i2c_nfc", southwest_i2c_nfc_groups), | |
360 | FUNCTION("spi3", southwest_spi3_groups), | |
361 | }; | |
362 | ||
363 | static const struct chv_gpio_pinrange southwest_gpio_ranges[] = { | |
364 | GPIO_PINRANGE(0, 7), | |
365 | GPIO_PINRANGE(15, 22), | |
366 | GPIO_PINRANGE(30, 37), | |
367 | GPIO_PINRANGE(45, 52), | |
368 | GPIO_PINRANGE(60, 67), | |
369 | GPIO_PINRANGE(75, 82), | |
370 | GPIO_PINRANGE(90, 97), | |
371 | }; | |
372 | ||
373 | static const struct chv_community southwest_community = { | |
374 | .uid = "1", | |
375 | .pins = southwest_pins, | |
376 | .npins = ARRAY_SIZE(southwest_pins), | |
377 | .groups = southwest_groups, | |
378 | .ngroups = ARRAY_SIZE(southwest_groups), | |
379 | .functions = southwest_functions, | |
380 | .nfunctions = ARRAY_SIZE(southwest_functions), | |
381 | .gpio_ranges = southwest_gpio_ranges, | |
382 | .ngpio_ranges = ARRAY_SIZE(southwest_gpio_ranges), | |
47c950d1 | 383 | /* |
17d49c62 | 384 | * Southwest community can generate GPIO interrupts only for the |
47c950d1 MW |
385 | * first 8 interrupts. The upper half (8-15) can only be used to |
386 | * trigger GPEs. | |
387 | */ | |
388 | .nirqs = 8, | |
a0b02859 | 389 | .acpi_space_id = 0x91, |
6e08d6bb MW |
390 | }; |
391 | ||
392 | static const struct pinctrl_pin_desc north_pins[] = { | |
393 | PINCTRL_PIN(0, "GPIO_DFX_0"), | |
394 | PINCTRL_PIN(1, "GPIO_DFX_3"), | |
395 | PINCTRL_PIN(2, "GPIO_DFX_7"), | |
396 | PINCTRL_PIN(3, "GPIO_DFX_1"), | |
397 | PINCTRL_PIN(4, "GPIO_DFX_5"), | |
398 | PINCTRL_PIN(5, "GPIO_DFX_4"), | |
399 | PINCTRL_PIN(6, "GPIO_DFX_8"), | |
400 | PINCTRL_PIN(7, "GPIO_DFX_2"), | |
401 | PINCTRL_PIN(8, "GPIO_DFX_6"), | |
402 | ||
403 | PINCTRL_PIN(15, "GPIO_SUS0"), | |
404 | PINCTRL_PIN(16, "SEC_GPIO_SUS10"), | |
405 | PINCTRL_PIN(17, "GPIO_SUS3"), | |
406 | PINCTRL_PIN(18, "GPIO_SUS7"), | |
407 | PINCTRL_PIN(19, "GPIO_SUS1"), | |
408 | PINCTRL_PIN(20, "GPIO_SUS5"), | |
409 | PINCTRL_PIN(21, "SEC_GPIO_SUS11"), | |
410 | PINCTRL_PIN(22, "GPIO_SUS4"), | |
411 | PINCTRL_PIN(23, "SEC_GPIO_SUS8"), | |
412 | PINCTRL_PIN(24, "GPIO_SUS2"), | |
413 | PINCTRL_PIN(25, "GPIO_SUS6"), | |
414 | PINCTRL_PIN(26, "CX_PREQ_B"), | |
415 | PINCTRL_PIN(27, "SEC_GPIO_SUS9"), | |
416 | ||
417 | PINCTRL_PIN(30, "TRST_B"), | |
418 | PINCTRL_PIN(31, "TCK"), | |
419 | PINCTRL_PIN(32, "PROCHOT_B"), | |
420 | PINCTRL_PIN(33, "SVIDO_DATA"), | |
421 | PINCTRL_PIN(34, "TMS"), | |
422 | PINCTRL_PIN(35, "CX_PRDY_B_2"), | |
423 | PINCTRL_PIN(36, "TDO_2"), | |
424 | PINCTRL_PIN(37, "CX_PRDY_B"), | |
425 | PINCTRL_PIN(38, "SVIDO_ALERT_B"), | |
426 | PINCTRL_PIN(39, "TDO"), | |
427 | PINCTRL_PIN(40, "SVIDO_CLK"), | |
428 | PINCTRL_PIN(41, "TDI"), | |
429 | ||
430 | PINCTRL_PIN(45, "GP_CAMERASB_05"), | |
431 | PINCTRL_PIN(46, "GP_CAMERASB_02"), | |
432 | PINCTRL_PIN(47, "GP_CAMERASB_08"), | |
433 | PINCTRL_PIN(48, "GP_CAMERASB_00"), | |
434 | PINCTRL_PIN(49, "GP_CAMERASB_06"), | |
435 | PINCTRL_PIN(50, "GP_CAMERASB_10"), | |
436 | PINCTRL_PIN(51, "GP_CAMERASB_03"), | |
437 | PINCTRL_PIN(52, "GP_CAMERASB_09"), | |
438 | PINCTRL_PIN(53, "GP_CAMERASB_01"), | |
439 | PINCTRL_PIN(54, "GP_CAMERASB_07"), | |
440 | PINCTRL_PIN(55, "GP_CAMERASB_11"), | |
441 | PINCTRL_PIN(56, "GP_CAMERASB_04"), | |
442 | ||
443 | PINCTRL_PIN(60, "PANEL0_BKLTEN"), | |
444 | PINCTRL_PIN(61, "HV_DDI0_HPD"), | |
445 | PINCTRL_PIN(62, "HV_DDI2_DDC_SDA"), | |
446 | PINCTRL_PIN(63, "PANEL1_BKLTCTL"), | |
447 | PINCTRL_PIN(64, "HV_DDI1_HPD"), | |
448 | PINCTRL_PIN(65, "PANEL0_BKLTCTL"), | |
449 | PINCTRL_PIN(66, "HV_DDI0_DDC_SDA"), | |
450 | PINCTRL_PIN(67, "HV_DDI2_DDC_SCL"), | |
451 | PINCTRL_PIN(68, "HV_DDI2_HPD"), | |
452 | PINCTRL_PIN(69, "PANEL1_VDDEN"), | |
453 | PINCTRL_PIN(70, "PANEL1_BKLTEN"), | |
454 | PINCTRL_PIN(71, "HV_DDI0_DDC_SCL"), | |
455 | PINCTRL_PIN(72, "PANEL0_VDDEN"), | |
456 | }; | |
457 | ||
458 | static const struct chv_gpio_pinrange north_gpio_ranges[] = { | |
459 | GPIO_PINRANGE(0, 8), | |
460 | GPIO_PINRANGE(15, 27), | |
461 | GPIO_PINRANGE(30, 41), | |
462 | GPIO_PINRANGE(45, 56), | |
463 | GPIO_PINRANGE(60, 72), | |
464 | }; | |
465 | ||
466 | static const struct chv_community north_community = { | |
467 | .uid = "2", | |
468 | .pins = north_pins, | |
469 | .npins = ARRAY_SIZE(north_pins), | |
470 | .gpio_ranges = north_gpio_ranges, | |
471 | .ngpio_ranges = ARRAY_SIZE(north_gpio_ranges), | |
47c950d1 | 472 | /* |
505485a8 | 473 | * North community can generate GPIO interrupts only for the first |
47c950d1 MW |
474 | * 8 interrupts. The upper half (8-15) can only be used to trigger |
475 | * GPEs. | |
476 | */ | |
477 | .nirqs = 8, | |
a0b02859 | 478 | .acpi_space_id = 0x92, |
6e08d6bb MW |
479 | }; |
480 | ||
481 | static const struct pinctrl_pin_desc east_pins[] = { | |
482 | PINCTRL_PIN(0, "PMU_SLP_S3_B"), | |
483 | PINCTRL_PIN(1, "PMU_BATLOW_B"), | |
484 | PINCTRL_PIN(2, "SUS_STAT_B"), | |
485 | PINCTRL_PIN(3, "PMU_SLP_S0IX_B"), | |
486 | PINCTRL_PIN(4, "PMU_AC_PRESENT"), | |
487 | PINCTRL_PIN(5, "PMU_PLTRST_B"), | |
488 | PINCTRL_PIN(6, "PMU_SUSCLK"), | |
489 | PINCTRL_PIN(7, "PMU_SLP_LAN_B"), | |
490 | PINCTRL_PIN(8, "PMU_PWRBTN_B"), | |
491 | PINCTRL_PIN(9, "PMU_SLP_S4_B"), | |
492 | PINCTRL_PIN(10, "PMU_WAKE_B"), | |
493 | PINCTRL_PIN(11, "PMU_WAKE_LAN_B"), | |
494 | ||
495 | PINCTRL_PIN(15, "MF_ISH_GPIO_3"), | |
496 | PINCTRL_PIN(16, "MF_ISH_GPIO_7"), | |
497 | PINCTRL_PIN(17, "MF_ISH_I2C1_SCL"), | |
498 | PINCTRL_PIN(18, "MF_ISH_GPIO_1"), | |
499 | PINCTRL_PIN(19, "MF_ISH_GPIO_5"), | |
500 | PINCTRL_PIN(20, "MF_ISH_GPIO_9"), | |
501 | PINCTRL_PIN(21, "MF_ISH_GPIO_0"), | |
502 | PINCTRL_PIN(22, "MF_ISH_GPIO_4"), | |
503 | PINCTRL_PIN(23, "MF_ISH_GPIO_8"), | |
504 | PINCTRL_PIN(24, "MF_ISH_GPIO_2"), | |
505 | PINCTRL_PIN(25, "MF_ISH_GPIO_6"), | |
506 | PINCTRL_PIN(26, "MF_ISH_I2C1_SDA"), | |
507 | }; | |
508 | ||
509 | static const struct chv_gpio_pinrange east_gpio_ranges[] = { | |
510 | GPIO_PINRANGE(0, 11), | |
511 | GPIO_PINRANGE(15, 26), | |
512 | }; | |
513 | ||
514 | static const struct chv_community east_community = { | |
515 | .uid = "3", | |
516 | .pins = east_pins, | |
517 | .npins = ARRAY_SIZE(east_pins), | |
518 | .gpio_ranges = east_gpio_ranges, | |
519 | .ngpio_ranges = ARRAY_SIZE(east_gpio_ranges), | |
47c950d1 | 520 | .nirqs = 16, |
a0b02859 | 521 | .acpi_space_id = 0x93, |
6e08d6bb MW |
522 | }; |
523 | ||
524 | static const struct pinctrl_pin_desc southeast_pins[] = { | |
525 | PINCTRL_PIN(0, "MF_PLT_CLK0"), | |
526 | PINCTRL_PIN(1, "PWM1"), | |
527 | PINCTRL_PIN(2, "MF_PLT_CLK1"), | |
528 | PINCTRL_PIN(3, "MF_PLT_CLK4"), | |
529 | PINCTRL_PIN(4, "MF_PLT_CLK3"), | |
530 | PINCTRL_PIN(5, "PWM0"), | |
531 | PINCTRL_PIN(6, "MF_PLT_CLK5"), | |
532 | PINCTRL_PIN(7, "MF_PLT_CLK2"), | |
533 | ||
534 | PINCTRL_PIN(15, "SDMMC2_D3_CD_B"), | |
535 | PINCTRL_PIN(16, "SDMMC1_CLK"), | |
536 | PINCTRL_PIN(17, "SDMMC1_D0"), | |
537 | PINCTRL_PIN(18, "SDMMC2_D1"), | |
538 | PINCTRL_PIN(19, "SDMMC2_CLK"), | |
539 | PINCTRL_PIN(20, "SDMMC1_D2"), | |
540 | PINCTRL_PIN(21, "SDMMC2_D2"), | |
541 | PINCTRL_PIN(22, "SDMMC2_CMD"), | |
542 | PINCTRL_PIN(23, "SDMMC1_CMD"), | |
543 | PINCTRL_PIN(24, "SDMMC1_D1"), | |
544 | PINCTRL_PIN(25, "SDMMC2_D0"), | |
545 | PINCTRL_PIN(26, "SDMMC1_D3_CD_B"), | |
546 | ||
547 | PINCTRL_PIN(30, "SDMMC3_D1"), | |
548 | PINCTRL_PIN(31, "SDMMC3_CLK"), | |
549 | PINCTRL_PIN(32, "SDMMC3_D3"), | |
550 | PINCTRL_PIN(33, "SDMMC3_D2"), | |
551 | PINCTRL_PIN(34, "SDMMC3_CMD"), | |
552 | PINCTRL_PIN(35, "SDMMC3_D0"), | |
553 | ||
554 | PINCTRL_PIN(45, "MF_LPC_AD2"), | |
555 | PINCTRL_PIN(46, "LPC_CLKRUNB"), | |
556 | PINCTRL_PIN(47, "MF_LPC_AD0"), | |
557 | PINCTRL_PIN(48, "LPC_FRAMEB"), | |
558 | PINCTRL_PIN(49, "MF_LPC_CLKOUT1"), | |
559 | PINCTRL_PIN(50, "MF_LPC_AD3"), | |
560 | PINCTRL_PIN(51, "MF_LPC_CLKOUT0"), | |
561 | PINCTRL_PIN(52, "MF_LPC_AD1"), | |
562 | ||
563 | PINCTRL_PIN(60, "SPI1_MISO"), | |
564 | PINCTRL_PIN(61, "SPI1_CSO_B"), | |
565 | PINCTRL_PIN(62, "SPI1_CLK"), | |
566 | PINCTRL_PIN(63, "MMC1_D6"), | |
567 | PINCTRL_PIN(64, "SPI1_MOSI"), | |
568 | PINCTRL_PIN(65, "MMC1_D5"), | |
569 | PINCTRL_PIN(66, "SPI1_CS1_B"), | |
570 | PINCTRL_PIN(67, "MMC1_D4_SD_WE"), | |
571 | PINCTRL_PIN(68, "MMC1_D7"), | |
572 | PINCTRL_PIN(69, "MMC1_RCLK"), | |
573 | ||
574 | PINCTRL_PIN(75, "USB_OC1_B"), | |
575 | PINCTRL_PIN(76, "PMU_RESETBUTTON_B"), | |
576 | PINCTRL_PIN(77, "GPIO_ALERT"), | |
577 | PINCTRL_PIN(78, "SDMMC3_PWR_EN_B"), | |
578 | PINCTRL_PIN(79, "ILB_SERIRQ"), | |
579 | PINCTRL_PIN(80, "USB_OC0_B"), | |
580 | PINCTRL_PIN(81, "SDMMC3_CD_B"), | |
581 | PINCTRL_PIN(82, "SPKR"), | |
582 | PINCTRL_PIN(83, "SUSPWRDNACK"), | |
583 | PINCTRL_PIN(84, "SPARE_PIN"), | |
584 | PINCTRL_PIN(85, "SDMMC3_1P8_EN"), | |
585 | }; | |
586 | ||
587 | static const unsigned southeast_pwm0_pins[] = { 5 }; | |
588 | static const unsigned southeast_pwm1_pins[] = { 1 }; | |
589 | static const unsigned southeast_sdmmc1_pins[] = { | |
590 | 16, 17, 20, 23, 24, 26, 63, 65, 67, 68, 69, | |
591 | }; | |
592 | static const unsigned southeast_sdmmc2_pins[] = { 15, 18, 19, 21, 22, 25 }; | |
593 | static const unsigned southeast_sdmmc3_pins[] = { | |
594 | 30, 31, 32, 33, 34, 35, 78, 81, 85, | |
595 | }; | |
596 | static const unsigned southeast_spi1_pins[] = { 60, 61, 62, 64, 66 }; | |
597 | static const unsigned southeast_spi2_pins[] = { 2, 3, 4, 6, 7 }; | |
598 | ||
599 | static const struct chv_pingroup southeast_groups[] = { | |
5458b7ce AS |
600 | PIN_GROUP_WITH_ALT("pwm0_grp", southeast_pwm0_pins, 1, false), |
601 | PIN_GROUP_WITH_ALT("pwm1_grp", southeast_pwm1_pins, 1, false), | |
602 | PIN_GROUP_WITH_ALT("sdmmc1_grp", southeast_sdmmc1_pins, 1, false), | |
603 | PIN_GROUP_WITH_ALT("sdmmc2_grp", southeast_sdmmc2_pins, 1, false), | |
604 | PIN_GROUP_WITH_ALT("sdmmc3_grp", southeast_sdmmc3_pins, 1, false), | |
605 | PIN_GROUP_WITH_ALT("spi1_grp", southeast_spi1_pins, 1, false), | |
606 | PIN_GROUP_WITH_ALT("spi2_grp", southeast_spi2_pins, 4, false), | |
6e08d6bb MW |
607 | }; |
608 | ||
609 | static const char * const southeast_pwm0_groups[] = { "pwm0_grp" }; | |
610 | static const char * const southeast_pwm1_groups[] = { "pwm1_grp" }; | |
611 | static const char * const southeast_sdmmc1_groups[] = { "sdmmc1_grp" }; | |
612 | static const char * const southeast_sdmmc2_groups[] = { "sdmmc2_grp" }; | |
613 | static const char * const southeast_sdmmc3_groups[] = { "sdmmc3_grp" }; | |
614 | static const char * const southeast_spi1_groups[] = { "spi1_grp" }; | |
615 | static const char * const southeast_spi2_groups[] = { "spi2_grp" }; | |
616 | ||
5458b7ce | 617 | static const struct intel_function southeast_functions[] = { |
6e08d6bb MW |
618 | FUNCTION("pwm0", southeast_pwm0_groups), |
619 | FUNCTION("pwm1", southeast_pwm1_groups), | |
620 | FUNCTION("sdmmc1", southeast_sdmmc1_groups), | |
621 | FUNCTION("sdmmc2", southeast_sdmmc2_groups), | |
622 | FUNCTION("sdmmc3", southeast_sdmmc3_groups), | |
623 | FUNCTION("spi1", southeast_spi1_groups), | |
624 | FUNCTION("spi2", southeast_spi2_groups), | |
625 | }; | |
626 | ||
627 | static const struct chv_gpio_pinrange southeast_gpio_ranges[] = { | |
628 | GPIO_PINRANGE(0, 7), | |
629 | GPIO_PINRANGE(15, 26), | |
630 | GPIO_PINRANGE(30, 35), | |
631 | GPIO_PINRANGE(45, 52), | |
632 | GPIO_PINRANGE(60, 69), | |
633 | GPIO_PINRANGE(75, 85), | |
634 | }; | |
635 | ||
636 | static const struct chv_community southeast_community = { | |
637 | .uid = "4", | |
638 | .pins = southeast_pins, | |
639 | .npins = ARRAY_SIZE(southeast_pins), | |
640 | .groups = southeast_groups, | |
641 | .ngroups = ARRAY_SIZE(southeast_groups), | |
642 | .functions = southeast_functions, | |
643 | .nfunctions = ARRAY_SIZE(southeast_functions), | |
644 | .gpio_ranges = southeast_gpio_ranges, | |
645 | .ngpio_ranges = ARRAY_SIZE(southeast_gpio_ranges), | |
47c950d1 | 646 | .nirqs = 16, |
a0b02859 | 647 | .acpi_space_id = 0x94, |
6e08d6bb MW |
648 | }; |
649 | ||
650 | static const struct chv_community *chv_communities[] = { | |
651 | &southwest_community, | |
652 | &north_community, | |
653 | &east_community, | |
654 | &southeast_community, | |
655 | }; | |
656 | ||
0bd50d71 DD |
657 | /* |
658 | * Lock to serialize register accesses | |
659 | * | |
660 | * Due to a silicon issue, a shared lock must be used to prevent | |
661 | * concurrent accesses across the 4 GPIO controllers. | |
662 | * | |
663 | * See Intel Atom Z8000 Processor Series Specification Update (Rev. 005), | |
664 | * errata #CHT34, for further information. | |
665 | */ | |
666 | static DEFINE_RAW_SPINLOCK(chv_lock); | |
667 | ||
4e737af8 AS |
668 | static void __iomem *chv_padreg(struct chv_pinctrl *pctrl, unsigned int offset, |
669 | unsigned int reg) | |
6e08d6bb | 670 | { |
4e737af8 AS |
671 | unsigned int family_no = offset / MAX_FAMILY_PAD_GPIO_NO; |
672 | unsigned int pad_no = offset % MAX_FAMILY_PAD_GPIO_NO; | |
6e08d6bb MW |
673 | |
674 | offset = FAMILY_PAD_REGS_OFF + FAMILY_PAD_REGS_SIZE * family_no + | |
675 | GPIO_REGS_SIZE * pad_no; | |
676 | ||
677 | return pctrl->regs + offset + reg; | |
678 | } | |
679 | ||
680 | static void chv_writel(u32 value, void __iomem *reg) | |
681 | { | |
682 | writel(value, reg); | |
683 | /* simple readback to confirm the bus transferring done */ | |
684 | readl(reg); | |
685 | } | |
686 | ||
687 | /* When Pad Cfg is locked, driver can only change GPIOTXState or GPIORXState */ | |
4e737af8 | 688 | static bool chv_pad_locked(struct chv_pinctrl *pctrl, unsigned int offset) |
6e08d6bb MW |
689 | { |
690 | void __iomem *reg; | |
691 | ||
692 | reg = chv_padreg(pctrl, offset, CHV_PADCTRL1); | |
693 | return readl(reg) & CHV_PADCTRL1_CFGLOCK; | |
694 | } | |
695 | ||
696 | static int chv_get_groups_count(struct pinctrl_dev *pctldev) | |
697 | { | |
698 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
699 | ||
700 | return pctrl->community->ngroups; | |
701 | } | |
702 | ||
703 | static const char *chv_get_group_name(struct pinctrl_dev *pctldev, | |
4e737af8 | 704 | unsigned int group) |
6e08d6bb MW |
705 | { |
706 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
707 | ||
708 | return pctrl->community->groups[group].name; | |
709 | } | |
710 | ||
4e737af8 AS |
711 | static int chv_get_group_pins(struct pinctrl_dev *pctldev, unsigned int group, |
712 | const unsigned int **pins, unsigned int *npins) | |
6e08d6bb MW |
713 | { |
714 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
715 | ||
716 | *pins = pctrl->community->groups[group].pins; | |
717 | *npins = pctrl->community->groups[group].npins; | |
718 | return 0; | |
719 | } | |
720 | ||
721 | static void chv_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, | |
4e737af8 | 722 | unsigned int offset) |
6e08d6bb MW |
723 | { |
724 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
725 | unsigned long flags; | |
726 | u32 ctrl0, ctrl1; | |
727 | bool locked; | |
728 | ||
0bd50d71 | 729 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
730 | |
731 | ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0)); | |
732 | ctrl1 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL1)); | |
733 | locked = chv_pad_locked(pctrl, offset); | |
734 | ||
0bd50d71 | 735 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
736 | |
737 | if (ctrl0 & CHV_PADCTRL0_GPIOEN) { | |
738 | seq_puts(s, "GPIO "); | |
739 | } else { | |
740 | u32 mode; | |
741 | ||
742 | mode = ctrl0 & CHV_PADCTRL0_PMODE_MASK; | |
743 | mode >>= CHV_PADCTRL0_PMODE_SHIFT; | |
744 | ||
745 | seq_printf(s, "mode %d ", mode); | |
746 | } | |
747 | ||
684373ea | 748 | seq_printf(s, "0x%08x 0x%08x", ctrl0, ctrl1); |
6e08d6bb MW |
749 | |
750 | if (locked) | |
751 | seq_puts(s, " [LOCKED]"); | |
752 | } | |
753 | ||
754 | static const struct pinctrl_ops chv_pinctrl_ops = { | |
755 | .get_groups_count = chv_get_groups_count, | |
756 | .get_group_name = chv_get_group_name, | |
757 | .get_group_pins = chv_get_group_pins, | |
758 | .pin_dbg_show = chv_pin_dbg_show, | |
759 | }; | |
760 | ||
761 | static int chv_get_functions_count(struct pinctrl_dev *pctldev) | |
762 | { | |
763 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
764 | ||
765 | return pctrl->community->nfunctions; | |
766 | } | |
767 | ||
768 | static const char *chv_get_function_name(struct pinctrl_dev *pctldev, | |
4e737af8 | 769 | unsigned int function) |
6e08d6bb MW |
770 | { |
771 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
772 | ||
773 | return pctrl->community->functions[function].name; | |
774 | } | |
775 | ||
776 | static int chv_get_function_groups(struct pinctrl_dev *pctldev, | |
4e737af8 | 777 | unsigned int function, |
6e08d6bb | 778 | const char * const **groups, |
4e737af8 | 779 | unsigned int * const ngroups) |
6e08d6bb MW |
780 | { |
781 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
782 | ||
783 | *groups = pctrl->community->functions[function].groups; | |
784 | *ngroups = pctrl->community->functions[function].ngroups; | |
785 | return 0; | |
786 | } | |
787 | ||
4e737af8 AS |
788 | static int chv_pinmux_set_mux(struct pinctrl_dev *pctldev, |
789 | unsigned int function, unsigned int group) | |
6e08d6bb MW |
790 | { |
791 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
792 | const struct chv_pingroup *grp; | |
793 | unsigned long flags; | |
794 | int i; | |
795 | ||
796 | grp = &pctrl->community->groups[group]; | |
797 | ||
0bd50d71 | 798 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
799 | |
800 | /* Check first that the pad is not locked */ | |
801 | for (i = 0; i < grp->npins; i++) { | |
802 | if (chv_pad_locked(pctrl, grp->pins[i])) { | |
803 | dev_warn(pctrl->dev, "unable to set mode for locked pin %u\n", | |
804 | grp->pins[i]); | |
0bd50d71 | 805 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
806 | return -EBUSY; |
807 | } | |
808 | } | |
809 | ||
810 | for (i = 0; i < grp->npins; i++) { | |
811 | const struct chv_alternate_function *altfunc = &grp->altfunc; | |
812 | int pin = grp->pins[i]; | |
813 | void __iomem *reg; | |
814 | u32 value; | |
815 | ||
816 | /* Check if there is pin-specific config */ | |
817 | if (grp->overrides) { | |
818 | int j; | |
819 | ||
820 | for (j = 0; j < grp->noverrides; j++) { | |
821 | if (grp->overrides[j].pin == pin) { | |
822 | altfunc = &grp->overrides[j]; | |
823 | break; | |
824 | } | |
825 | } | |
826 | } | |
827 | ||
828 | reg = chv_padreg(pctrl, pin, CHV_PADCTRL0); | |
829 | value = readl(reg); | |
830 | /* Disable GPIO mode */ | |
831 | value &= ~CHV_PADCTRL0_GPIOEN; | |
832 | /* Set to desired mode */ | |
833 | value &= ~CHV_PADCTRL0_PMODE_MASK; | |
834 | value |= altfunc->mode << CHV_PADCTRL0_PMODE_SHIFT; | |
835 | chv_writel(value, reg); | |
836 | ||
837 | /* Update for invert_oe */ | |
838 | reg = chv_padreg(pctrl, pin, CHV_PADCTRL1); | |
839 | value = readl(reg) & ~CHV_PADCTRL1_INVRXTX_MASK; | |
840 | if (altfunc->invert_oe) | |
841 | value |= CHV_PADCTRL1_INVRXTX_TXENABLE; | |
842 | chv_writel(value, reg); | |
843 | ||
844 | dev_dbg(pctrl->dev, "configured pin %u mode %u OE %sinverted\n", | |
845 | pin, altfunc->mode, altfunc->invert_oe ? "" : "not "); | |
846 | } | |
847 | ||
0bd50d71 | 848 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
849 | |
850 | return 0; | |
851 | } | |
852 | ||
b6fb6e11 HG |
853 | static void chv_gpio_clear_triggering(struct chv_pinctrl *pctrl, |
854 | unsigned int offset) | |
855 | { | |
856 | void __iomem *reg; | |
857 | u32 value; | |
858 | ||
859 | reg = chv_padreg(pctrl, offset, CHV_PADCTRL1); | |
860 | value = readl(reg); | |
861 | value &= ~CHV_PADCTRL1_INTWAKECFG_MASK; | |
862 | value &= ~CHV_PADCTRL1_INVRXTX_MASK; | |
863 | chv_writel(value, reg); | |
864 | } | |
865 | ||
6e08d6bb MW |
866 | static int chv_gpio_request_enable(struct pinctrl_dev *pctldev, |
867 | struct pinctrl_gpio_range *range, | |
4e737af8 | 868 | unsigned int offset) |
6e08d6bb MW |
869 | { |
870 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
871 | unsigned long flags; | |
872 | void __iomem *reg; | |
873 | u32 value; | |
874 | ||
0bd50d71 | 875 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
876 | |
877 | if (chv_pad_locked(pctrl, offset)) { | |
878 | value = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0)); | |
879 | if (!(value & CHV_PADCTRL0_GPIOEN)) { | |
880 | /* Locked so cannot enable */ | |
0bd50d71 | 881 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
882 | return -EBUSY; |
883 | } | |
884 | } else { | |
885 | int i; | |
886 | ||
887 | /* Reset the interrupt mapping */ | |
888 | for (i = 0; i < ARRAY_SIZE(pctrl->intr_lines); i++) { | |
889 | if (pctrl->intr_lines[i] == offset) { | |
890 | pctrl->intr_lines[i] = 0; | |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
895 | /* Disable interrupt generation */ | |
b6fb6e11 | 896 | chv_gpio_clear_triggering(pctrl, offset); |
6e08d6bb | 897 | |
6e08d6bb | 898 | reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); |
2479c730 MW |
899 | value = readl(reg); |
900 | ||
901 | /* | |
902 | * If the pin is in HiZ mode (both TX and RX buffers are | |
903 | * disabled) we turn it to be input now. | |
904 | */ | |
905 | if ((value & CHV_PADCTRL0_GPIOCFG_MASK) == | |
906 | (CHV_PADCTRL0_GPIOCFG_HIZ << CHV_PADCTRL0_GPIOCFG_SHIFT)) { | |
907 | value &= ~CHV_PADCTRL0_GPIOCFG_MASK; | |
908 | value |= CHV_PADCTRL0_GPIOCFG_GPI << | |
909 | CHV_PADCTRL0_GPIOCFG_SHIFT; | |
910 | } | |
911 | ||
912 | /* Switch to a GPIO mode */ | |
913 | value |= CHV_PADCTRL0_GPIOEN; | |
6e08d6bb MW |
914 | chv_writel(value, reg); |
915 | } | |
916 | ||
0bd50d71 | 917 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
918 | |
919 | return 0; | |
920 | } | |
921 | ||
922 | static void chv_gpio_disable_free(struct pinctrl_dev *pctldev, | |
923 | struct pinctrl_gpio_range *range, | |
4e737af8 | 924 | unsigned int offset) |
6e08d6bb MW |
925 | { |
926 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
927 | unsigned long flags; | |
6e08d6bb | 928 | |
0bd50d71 | 929 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb | 930 | |
1adde32a HG |
931 | if (!chv_pad_locked(pctrl, offset)) |
932 | chv_gpio_clear_triggering(pctrl, offset); | |
6e08d6bb | 933 | |
0bd50d71 | 934 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
935 | } |
936 | ||
937 | static int chv_gpio_set_direction(struct pinctrl_dev *pctldev, | |
938 | struct pinctrl_gpio_range *range, | |
4e737af8 | 939 | unsigned int offset, bool input) |
6e08d6bb MW |
940 | { |
941 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
942 | void __iomem *reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); | |
943 | unsigned long flags; | |
944 | u32 ctrl0; | |
945 | ||
0bd50d71 | 946 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
947 | |
948 | ctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIOCFG_MASK; | |
949 | if (input) | |
950 | ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPI << CHV_PADCTRL0_GPIOCFG_SHIFT; | |
951 | else | |
952 | ctrl0 |= CHV_PADCTRL0_GPIOCFG_GPO << CHV_PADCTRL0_GPIOCFG_SHIFT; | |
953 | chv_writel(ctrl0, reg); | |
954 | ||
0bd50d71 | 955 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
956 | |
957 | return 0; | |
958 | } | |
959 | ||
960 | static const struct pinmux_ops chv_pinmux_ops = { | |
961 | .get_functions_count = chv_get_functions_count, | |
962 | .get_function_name = chv_get_function_name, | |
963 | .get_function_groups = chv_get_function_groups, | |
964 | .set_mux = chv_pinmux_set_mux, | |
965 | .gpio_request_enable = chv_gpio_request_enable, | |
966 | .gpio_disable_free = chv_gpio_disable_free, | |
967 | .gpio_set_direction = chv_gpio_set_direction, | |
968 | }; | |
969 | ||
4e737af8 | 970 | static int chv_config_get(struct pinctrl_dev *pctldev, unsigned int pin, |
6e08d6bb MW |
971 | unsigned long *config) |
972 | { | |
973 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
974 | enum pin_config_param param = pinconf_to_config_param(*config); | |
975 | unsigned long flags; | |
976 | u32 ctrl0, ctrl1; | |
977 | u16 arg = 0; | |
978 | u32 term; | |
979 | ||
0bd50d71 | 980 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
981 | ctrl0 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); |
982 | ctrl1 = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1)); | |
0bd50d71 | 983 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
984 | |
985 | term = (ctrl0 & CHV_PADCTRL0_TERM_MASK) >> CHV_PADCTRL0_TERM_SHIFT; | |
986 | ||
987 | switch (param) { | |
988 | case PIN_CONFIG_BIAS_DISABLE: | |
989 | if (term) | |
990 | return -EINVAL; | |
991 | break; | |
992 | ||
993 | case PIN_CONFIG_BIAS_PULL_UP: | |
994 | if (!(ctrl0 & CHV_PADCTRL0_TERM_UP)) | |
995 | return -EINVAL; | |
996 | ||
997 | switch (term) { | |
998 | case CHV_PADCTRL0_TERM_20K: | |
999 | arg = 20000; | |
1000 | break; | |
1001 | case CHV_PADCTRL0_TERM_5K: | |
1002 | arg = 5000; | |
1003 | break; | |
1004 | case CHV_PADCTRL0_TERM_1K: | |
1005 | arg = 1000; | |
1006 | break; | |
1007 | } | |
1008 | ||
1009 | break; | |
1010 | ||
1011 | case PIN_CONFIG_BIAS_PULL_DOWN: | |
1012 | if (!term || (ctrl0 & CHV_PADCTRL0_TERM_UP)) | |
1013 | return -EINVAL; | |
1014 | ||
1015 | switch (term) { | |
1016 | case CHV_PADCTRL0_TERM_20K: | |
1017 | arg = 20000; | |
1018 | break; | |
1019 | case CHV_PADCTRL0_TERM_5K: | |
1020 | arg = 5000; | |
1021 | break; | |
1022 | } | |
1023 | ||
1024 | break; | |
1025 | ||
1026 | case PIN_CONFIG_DRIVE_OPEN_DRAIN: | |
1027 | if (!(ctrl1 & CHV_PADCTRL1_ODEN)) | |
1028 | return -EINVAL; | |
1029 | break; | |
1030 | ||
1031 | case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: { | |
1032 | u32 cfg; | |
1033 | ||
1034 | cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK; | |
1035 | cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT; | |
1036 | if (cfg != CHV_PADCTRL0_GPIOCFG_HIZ) | |
1037 | return -EINVAL; | |
1038 | ||
1039 | break; | |
1040 | } | |
1041 | ||
1042 | default: | |
1043 | return -ENOTSUPP; | |
1044 | } | |
1045 | ||
1046 | *config = pinconf_to_config_packed(param, arg); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
4e737af8 | 1050 | static int chv_config_set_pull(struct chv_pinctrl *pctrl, unsigned int pin, |
58957d2e | 1051 | enum pin_config_param param, u32 arg) |
6e08d6bb MW |
1052 | { |
1053 | void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL0); | |
1054 | unsigned long flags; | |
1055 | u32 ctrl0, pull; | |
1056 | ||
0bd50d71 | 1057 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
1058 | ctrl0 = readl(reg); |
1059 | ||
1060 | switch (param) { | |
1061 | case PIN_CONFIG_BIAS_DISABLE: | |
1062 | ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP); | |
1063 | break; | |
1064 | ||
1065 | case PIN_CONFIG_BIAS_PULL_UP: | |
1066 | ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP); | |
1067 | ||
1068 | switch (arg) { | |
1069 | case 1000: | |
1070 | /* For 1k there is only pull up */ | |
1071 | pull = CHV_PADCTRL0_TERM_1K << CHV_PADCTRL0_TERM_SHIFT; | |
1072 | break; | |
1073 | case 5000: | |
1074 | pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT; | |
1075 | break; | |
1076 | case 20000: | |
1077 | pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT; | |
1078 | break; | |
1079 | default: | |
0bd50d71 | 1080 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1081 | return -EINVAL; |
1082 | } | |
1083 | ||
1084 | ctrl0 |= CHV_PADCTRL0_TERM_UP | pull; | |
1085 | break; | |
1086 | ||
1087 | case PIN_CONFIG_BIAS_PULL_DOWN: | |
1088 | ctrl0 &= ~(CHV_PADCTRL0_TERM_MASK | CHV_PADCTRL0_TERM_UP); | |
1089 | ||
1090 | switch (arg) { | |
1091 | case 5000: | |
1092 | pull = CHV_PADCTRL0_TERM_5K << CHV_PADCTRL0_TERM_SHIFT; | |
1093 | break; | |
1094 | case 20000: | |
1095 | pull = CHV_PADCTRL0_TERM_20K << CHV_PADCTRL0_TERM_SHIFT; | |
1096 | break; | |
1097 | default: | |
0bd50d71 | 1098 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1099 | return -EINVAL; |
1100 | } | |
1101 | ||
1102 | ctrl0 |= pull; | |
1103 | break; | |
1104 | ||
1105 | default: | |
0bd50d71 | 1106 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1107 | return -EINVAL; |
1108 | } | |
1109 | ||
1110 | chv_writel(ctrl0, reg); | |
0bd50d71 | 1111 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1112 | |
1113 | return 0; | |
1114 | } | |
1115 | ||
ccdf81d0 DD |
1116 | static int chv_config_set_oden(struct chv_pinctrl *pctrl, unsigned int pin, |
1117 | bool enable) | |
1118 | { | |
1119 | void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL1); | |
1120 | unsigned long flags; | |
1121 | u32 ctrl1; | |
1122 | ||
1123 | raw_spin_lock_irqsave(&chv_lock, flags); | |
1124 | ctrl1 = readl(reg); | |
1125 | ||
1126 | if (enable) | |
1127 | ctrl1 |= CHV_PADCTRL1_ODEN; | |
1128 | else | |
1129 | ctrl1 &= ~CHV_PADCTRL1_ODEN; | |
1130 | ||
1131 | chv_writel(ctrl1, reg); | |
1132 | raw_spin_unlock_irqrestore(&chv_lock, flags); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
4e737af8 AS |
1137 | static int chv_config_set(struct pinctrl_dev *pctldev, unsigned int pin, |
1138 | unsigned long *configs, unsigned int nconfigs) | |
6e08d6bb MW |
1139 | { |
1140 | struct chv_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); | |
1141 | enum pin_config_param param; | |
1142 | int i, ret; | |
58957d2e | 1143 | u32 arg; |
6e08d6bb MW |
1144 | |
1145 | if (chv_pad_locked(pctrl, pin)) | |
1146 | return -EBUSY; | |
1147 | ||
1148 | for (i = 0; i < nconfigs; i++) { | |
1149 | param = pinconf_to_config_param(configs[i]); | |
1150 | arg = pinconf_to_config_argument(configs[i]); | |
1151 | ||
1152 | switch (param) { | |
1153 | case PIN_CONFIG_BIAS_DISABLE: | |
1154 | case PIN_CONFIG_BIAS_PULL_UP: | |
1155 | case PIN_CONFIG_BIAS_PULL_DOWN: | |
1156 | ret = chv_config_set_pull(pctrl, pin, param, arg); | |
1157 | if (ret) | |
1158 | return ret; | |
1159 | break; | |
1160 | ||
ccdf81d0 DD |
1161 | case PIN_CONFIG_DRIVE_PUSH_PULL: |
1162 | ret = chv_config_set_oden(pctrl, pin, false); | |
1163 | if (ret) | |
1164 | return ret; | |
1165 | break; | |
1166 | ||
1167 | case PIN_CONFIG_DRIVE_OPEN_DRAIN: | |
1168 | ret = chv_config_set_oden(pctrl, pin, true); | |
1169 | if (ret) | |
1170 | return ret; | |
1171 | break; | |
1172 | ||
6e08d6bb MW |
1173 | default: |
1174 | return -ENOTSUPP; | |
1175 | } | |
1176 | ||
1177 | dev_dbg(pctrl->dev, "pin %d set config %d arg %u\n", pin, | |
1178 | param, arg); | |
1179 | } | |
1180 | ||
1181 | return 0; | |
1182 | } | |
1183 | ||
77401d7f DD |
1184 | static int chv_config_group_get(struct pinctrl_dev *pctldev, |
1185 | unsigned int group, | |
1186 | unsigned long *config) | |
1187 | { | |
1188 | const unsigned int *pins; | |
1189 | unsigned int npins; | |
1190 | int ret; | |
1191 | ||
1192 | ret = chv_get_group_pins(pctldev, group, &pins, &npins); | |
1193 | if (ret) | |
1194 | return ret; | |
1195 | ||
1196 | ret = chv_config_get(pctldev, pins[0], config); | |
1197 | if (ret) | |
1198 | return ret; | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | static int chv_config_group_set(struct pinctrl_dev *pctldev, | |
1204 | unsigned int group, unsigned long *configs, | |
1205 | unsigned int num_configs) | |
1206 | { | |
1207 | const unsigned int *pins; | |
1208 | unsigned int npins; | |
1209 | int i, ret; | |
1210 | ||
1211 | ret = chv_get_group_pins(pctldev, group, &pins, &npins); | |
1212 | if (ret) | |
1213 | return ret; | |
1214 | ||
1215 | for (i = 0; i < npins; i++) { | |
1216 | ret = chv_config_set(pctldev, pins[i], configs, num_configs); | |
1217 | if (ret) | |
1218 | return ret; | |
1219 | } | |
1220 | ||
1221 | return 0; | |
1222 | } | |
1223 | ||
6e08d6bb MW |
1224 | static const struct pinconf_ops chv_pinconf_ops = { |
1225 | .is_generic = true, | |
1226 | .pin_config_set = chv_config_set, | |
1227 | .pin_config_get = chv_config_get, | |
77401d7f DD |
1228 | .pin_config_group_get = chv_config_group_get, |
1229 | .pin_config_group_set = chv_config_group_set, | |
6e08d6bb MW |
1230 | }; |
1231 | ||
1232 | static struct pinctrl_desc chv_pinctrl_desc = { | |
1233 | .pctlops = &chv_pinctrl_ops, | |
1234 | .pmxops = &chv_pinmux_ops, | |
1235 | .confops = &chv_pinconf_ops, | |
1236 | .owner = THIS_MODULE, | |
1237 | }; | |
1238 | ||
4e737af8 | 1239 | static int chv_gpio_get(struct gpio_chip *chip, unsigned int offset) |
6e08d6bb | 1240 | { |
0587d3db | 1241 | struct chv_pinctrl *pctrl = gpiochip_get_data(chip); |
4585b000 | 1242 | unsigned long flags; |
6e08d6bb MW |
1243 | u32 ctrl0, cfg; |
1244 | ||
0bd50d71 | 1245 | raw_spin_lock_irqsave(&chv_lock, flags); |
03c4749d | 1246 | ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0)); |
0bd50d71 | 1247 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1248 | |
1249 | cfg = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK; | |
1250 | cfg >>= CHV_PADCTRL0_GPIOCFG_SHIFT; | |
1251 | ||
1252 | if (cfg == CHV_PADCTRL0_GPIOCFG_GPO) | |
1253 | return !!(ctrl0 & CHV_PADCTRL0_GPIOTXSTATE); | |
1254 | return !!(ctrl0 & CHV_PADCTRL0_GPIORXSTATE); | |
1255 | } | |
1256 | ||
4e737af8 | 1257 | static void chv_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) |
6e08d6bb | 1258 | { |
0587d3db | 1259 | struct chv_pinctrl *pctrl = gpiochip_get_data(chip); |
6e08d6bb MW |
1260 | unsigned long flags; |
1261 | void __iomem *reg; | |
1262 | u32 ctrl0; | |
1263 | ||
0bd50d71 | 1264 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb | 1265 | |
03c4749d | 1266 | reg = chv_padreg(pctrl, offset, CHV_PADCTRL0); |
6e08d6bb MW |
1267 | ctrl0 = readl(reg); |
1268 | ||
1269 | if (value) | |
1270 | ctrl0 |= CHV_PADCTRL0_GPIOTXSTATE; | |
1271 | else | |
1272 | ctrl0 &= ~CHV_PADCTRL0_GPIOTXSTATE; | |
1273 | ||
1274 | chv_writel(ctrl0, reg); | |
1275 | ||
0bd50d71 | 1276 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1277 | } |
1278 | ||
4e737af8 | 1279 | static int chv_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) |
6e08d6bb | 1280 | { |
0587d3db | 1281 | struct chv_pinctrl *pctrl = gpiochip_get_data(chip); |
6e08d6bb | 1282 | u32 ctrl0, direction; |
4585b000 | 1283 | unsigned long flags; |
6e08d6bb | 1284 | |
0bd50d71 | 1285 | raw_spin_lock_irqsave(&chv_lock, flags); |
03c4749d | 1286 | ctrl0 = readl(chv_padreg(pctrl, offset, CHV_PADCTRL0)); |
0bd50d71 | 1287 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1288 | |
1289 | direction = ctrl0 & CHV_PADCTRL0_GPIOCFG_MASK; | |
1290 | direction >>= CHV_PADCTRL0_GPIOCFG_SHIFT; | |
1291 | ||
90a1eb18 MV |
1292 | if (direction == CHV_PADCTRL0_GPIOCFG_GPO) |
1293 | return GPIO_LINE_DIRECTION_OUT; | |
1294 | ||
1295 | return GPIO_LINE_DIRECTION_IN; | |
6e08d6bb MW |
1296 | } |
1297 | ||
4e737af8 | 1298 | static int chv_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) |
6e08d6bb MW |
1299 | { |
1300 | return pinctrl_gpio_direction_input(chip->base + offset); | |
1301 | } | |
1302 | ||
4e737af8 | 1303 | static int chv_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, |
6e08d6bb MW |
1304 | int value) |
1305 | { | |
549e783f | 1306 | chv_gpio_set(chip, offset, value); |
6e08d6bb MW |
1307 | return pinctrl_gpio_direction_output(chip->base + offset); |
1308 | } | |
1309 | ||
1310 | static const struct gpio_chip chv_gpio_chip = { | |
1311 | .owner = THIS_MODULE, | |
98c85d58 JG |
1312 | .request = gpiochip_generic_request, |
1313 | .free = gpiochip_generic_free, | |
6e08d6bb MW |
1314 | .get_direction = chv_gpio_get_direction, |
1315 | .direction_input = chv_gpio_direction_input, | |
1316 | .direction_output = chv_gpio_direction_output, | |
1317 | .get = chv_gpio_get, | |
1318 | .set = chv_gpio_set, | |
1319 | }; | |
1320 | ||
1321 | static void chv_gpio_irq_ack(struct irq_data *d) | |
1322 | { | |
1323 | struct gpio_chip *gc = irq_data_get_irq_chip_data(d); | |
0587d3db | 1324 | struct chv_pinctrl *pctrl = gpiochip_get_data(gc); |
03c4749d | 1325 | int pin = irqd_to_hwirq(d); |
6e08d6bb MW |
1326 | u32 intr_line; |
1327 | ||
0bd50d71 | 1328 | raw_spin_lock(&chv_lock); |
6e08d6bb MW |
1329 | |
1330 | intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); | |
1331 | intr_line &= CHV_PADCTRL0_INTSEL_MASK; | |
1332 | intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT; | |
1333 | chv_writel(BIT(intr_line), pctrl->regs + CHV_INTSTAT); | |
1334 | ||
0bd50d71 | 1335 | raw_spin_unlock(&chv_lock); |
6e08d6bb MW |
1336 | } |
1337 | ||
1338 | static void chv_gpio_irq_mask_unmask(struct irq_data *d, bool mask) | |
1339 | { | |
1340 | struct gpio_chip *gc = irq_data_get_irq_chip_data(d); | |
0587d3db | 1341 | struct chv_pinctrl *pctrl = gpiochip_get_data(gc); |
03c4749d | 1342 | int pin = irqd_to_hwirq(d); |
6e08d6bb MW |
1343 | u32 value, intr_line; |
1344 | unsigned long flags; | |
1345 | ||
0bd50d71 | 1346 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
1347 | |
1348 | intr_line = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); | |
1349 | intr_line &= CHV_PADCTRL0_INTSEL_MASK; | |
1350 | intr_line >>= CHV_PADCTRL0_INTSEL_SHIFT; | |
1351 | ||
1352 | value = readl(pctrl->regs + CHV_INTMASK); | |
1353 | if (mask) | |
1354 | value &= ~BIT(intr_line); | |
1355 | else | |
1356 | value |= BIT(intr_line); | |
1357 | chv_writel(value, pctrl->regs + CHV_INTMASK); | |
1358 | ||
0bd50d71 | 1359 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1360 | } |
1361 | ||
1362 | static void chv_gpio_irq_mask(struct irq_data *d) | |
1363 | { | |
1364 | chv_gpio_irq_mask_unmask(d, true); | |
1365 | } | |
1366 | ||
1367 | static void chv_gpio_irq_unmask(struct irq_data *d) | |
1368 | { | |
1369 | chv_gpio_irq_mask_unmask(d, false); | |
1370 | } | |
1371 | ||
e6c906de MW |
1372 | static unsigned chv_gpio_irq_startup(struct irq_data *d) |
1373 | { | |
1374 | /* | |
1375 | * Check if the interrupt has been requested with 0 as triggering | |
1376 | * type. In that case it is assumed that the current values | |
1377 | * programmed to the hardware are used (e.g BIOS configured | |
1378 | * defaults). | |
1379 | * | |
1380 | * In that case ->irq_set_type() will never be called so we need to | |
1381 | * read back the values from hardware now, set correct flow handler | |
1382 | * and update mappings before the interrupt is being used. | |
1383 | */ | |
1384 | if (irqd_get_trigger_type(d) == IRQ_TYPE_NONE) { | |
1385 | struct gpio_chip *gc = irq_data_get_irq_chip_data(d); | |
0587d3db | 1386 | struct chv_pinctrl *pctrl = gpiochip_get_data(gc); |
4e737af8 | 1387 | unsigned int pin = irqd_to_hwirq(d); |
e6c906de MW |
1388 | irq_flow_handler_t handler; |
1389 | unsigned long flags; | |
1390 | u32 intsel, value; | |
1391 | ||
0bd50d71 | 1392 | raw_spin_lock_irqsave(&chv_lock, flags); |
e6c906de MW |
1393 | intsel = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); |
1394 | intsel &= CHV_PADCTRL0_INTSEL_MASK; | |
1395 | intsel >>= CHV_PADCTRL0_INTSEL_SHIFT; | |
1396 | ||
1397 | value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL1)); | |
1398 | if (value & CHV_PADCTRL1_INTWAKECFG_LEVEL) | |
1399 | handler = handle_level_irq; | |
1400 | else | |
1401 | handler = handle_edge_irq; | |
1402 | ||
e6c906de | 1403 | if (!pctrl->intr_lines[intsel]) { |
a4e3f783 | 1404 | irq_set_handler_locked(d, handler); |
03c4749d | 1405 | pctrl->intr_lines[intsel] = pin; |
e6c906de | 1406 | } |
0bd50d71 | 1407 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
e6c906de MW |
1408 | } |
1409 | ||
1410 | chv_gpio_irq_unmask(d); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
4e737af8 | 1414 | static int chv_gpio_irq_type(struct irq_data *d, unsigned int type) |
6e08d6bb MW |
1415 | { |
1416 | struct gpio_chip *gc = irq_data_get_irq_chip_data(d); | |
0587d3db | 1417 | struct chv_pinctrl *pctrl = gpiochip_get_data(gc); |
4e737af8 | 1418 | unsigned int pin = irqd_to_hwirq(d); |
6e08d6bb MW |
1419 | unsigned long flags; |
1420 | u32 value; | |
1421 | ||
0bd50d71 | 1422 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb MW |
1423 | |
1424 | /* | |
1425 | * Pins which can be used as shared interrupt are configured in | |
1426 | * BIOS. Driver trusts BIOS configurations and assigns different | |
1427 | * handler according to the irq type. | |
1428 | * | |
1429 | * Driver needs to save the mapping between each pin and | |
1430 | * its interrupt line. | |
1431 | * 1. If the pin cfg is locked in BIOS: | |
1432 | * Trust BIOS has programmed IntWakeCfg bits correctly, | |
1433 | * driver just needs to save the mapping. | |
1434 | * 2. If the pin cfg is not locked in BIOS: | |
1435 | * Driver programs the IntWakeCfg bits and save the mapping. | |
1436 | */ | |
1437 | if (!chv_pad_locked(pctrl, pin)) { | |
1438 | void __iomem *reg = chv_padreg(pctrl, pin, CHV_PADCTRL1); | |
1439 | ||
1440 | value = readl(reg); | |
1441 | value &= ~CHV_PADCTRL1_INTWAKECFG_MASK; | |
1442 | value &= ~CHV_PADCTRL1_INVRXTX_MASK; | |
1443 | ||
1444 | if (type & IRQ_TYPE_EDGE_BOTH) { | |
1445 | if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) | |
1446 | value |= CHV_PADCTRL1_INTWAKECFG_BOTH; | |
1447 | else if (type & IRQ_TYPE_EDGE_RISING) | |
1448 | value |= CHV_PADCTRL1_INTWAKECFG_RISING; | |
1449 | else if (type & IRQ_TYPE_EDGE_FALLING) | |
1450 | value |= CHV_PADCTRL1_INTWAKECFG_FALLING; | |
1451 | } else if (type & IRQ_TYPE_LEVEL_MASK) { | |
1452 | value |= CHV_PADCTRL1_INTWAKECFG_LEVEL; | |
1453 | if (type & IRQ_TYPE_LEVEL_LOW) | |
1454 | value |= CHV_PADCTRL1_INVRXTX_RXDATA; | |
1455 | } | |
1456 | ||
1457 | chv_writel(value, reg); | |
1458 | } | |
1459 | ||
1460 | value = readl(chv_padreg(pctrl, pin, CHV_PADCTRL0)); | |
1461 | value &= CHV_PADCTRL0_INTSEL_MASK; | |
1462 | value >>= CHV_PADCTRL0_INTSEL_SHIFT; | |
1463 | ||
03c4749d | 1464 | pctrl->intr_lines[value] = pin; |
6e08d6bb MW |
1465 | |
1466 | if (type & IRQ_TYPE_EDGE_BOTH) | |
a4e3f783 | 1467 | irq_set_handler_locked(d, handle_edge_irq); |
6e08d6bb | 1468 | else if (type & IRQ_TYPE_LEVEL_MASK) |
a4e3f783 | 1469 | irq_set_handler_locked(d, handle_level_irq); |
6e08d6bb | 1470 | |
0bd50d71 | 1471 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
6e08d6bb MW |
1472 | |
1473 | return 0; | |
1474 | } | |
1475 | ||
bd0b9ac4 | 1476 | static void chv_gpio_irq_handler(struct irq_desc *desc) |
6e08d6bb MW |
1477 | { |
1478 | struct gpio_chip *gc = irq_desc_get_handler_data(desc); | |
0587d3db | 1479 | struct chv_pinctrl *pctrl = gpiochip_get_data(gc); |
5663bb27 | 1480 | struct irq_chip *chip = irq_desc_get_chip(desc); |
6e08d6bb | 1481 | unsigned long pending; |
69388e15 | 1482 | unsigned long flags; |
6e08d6bb MW |
1483 | u32 intr_line; |
1484 | ||
1485 | chained_irq_enter(chip, desc); | |
1486 | ||
69388e15 | 1487 | raw_spin_lock_irqsave(&chv_lock, flags); |
6e08d6bb | 1488 | pending = readl(pctrl->regs + CHV_INTSTAT); |
69388e15 GK |
1489 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
1490 | ||
47c950d1 | 1491 | for_each_set_bit(intr_line, &pending, pctrl->community->nirqs) { |
8ae93b5e | 1492 | unsigned int irq, offset; |
6e08d6bb MW |
1493 | |
1494 | offset = pctrl->intr_lines[intr_line]; | |
f0fbe7bc | 1495 | irq = irq_find_mapping(gc->irq.domain, offset); |
6e08d6bb MW |
1496 | generic_handle_irq(irq); |
1497 | } | |
1498 | ||
1499 | chained_irq_exit(chip, desc); | |
1500 | } | |
1501 | ||
70365027 MW |
1502 | /* |
1503 | * Certain machines seem to hardcode Linux IRQ numbers in their ACPI | |
1504 | * tables. Since we leave GPIOs that are not capable of generating | |
1505 | * interrupts out of the irqdomain the numbering will be different and | |
1506 | * cause devices using the hardcoded IRQ numbers fail. In order not to | |
1507 | * break such machines we will only mask pins from irqdomain if the machine | |
1508 | * is not listed below. | |
1509 | */ | |
1510 | static const struct dmi_system_id chv_no_valid_mask[] = { | |
2a8209fa | 1511 | /* See https://bugzilla.kernel.org/show_bug.cgi?id=194945 */ |
70365027 | 1512 | { |
2a8209fa | 1513 | .ident = "Intel_Strago based Chromebooks (All models)", |
70365027 MW |
1514 | .matches = { |
1515 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
2a8209fa MW |
1516 | DMI_MATCH(DMI_PRODUCT_FAMILY, "Intel_Strago"), |
1517 | }, | |
1518 | }, | |
2d80bd3f AS |
1519 | { |
1520 | .ident = "HP Chromebook 11 G5 (Setzer)", | |
1521 | .matches = { | |
1522 | DMI_MATCH(DMI_SYS_VENDOR, "HP"), | |
1523 | DMI_MATCH(DMI_PRODUCT_NAME, "Setzer"), | |
1524 | }, | |
1525 | }, | |
2a8209fa MW |
1526 | { |
1527 | .ident = "Acer Chromebook R11 (Cyan)", | |
1528 | .matches = { | |
1529 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
1530 | DMI_MATCH(DMI_PRODUCT_NAME, "Cyan"), | |
1531 | }, | |
1532 | }, | |
1533 | { | |
1534 | .ident = "Samsung Chromebook 3 (Celes)", | |
1535 | .matches = { | |
1536 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
1537 | DMI_MATCH(DMI_PRODUCT_NAME, "Celes"), | |
70365027 | 1538 | }, |
a9de080b WY |
1539 | }, |
1540 | {} | |
70365027 MW |
1541 | }; |
1542 | ||
5fbe5b58 LW |
1543 | static void chv_init_irq_valid_mask(struct gpio_chip *chip, |
1544 | unsigned long *valid_mask, | |
1545 | unsigned int ngpios) | |
1546 | { | |
1547 | struct chv_pinctrl *pctrl = gpiochip_get_data(chip); | |
1548 | const struct chv_community *community = pctrl->community; | |
1549 | int i; | |
1550 | ||
1551 | /* Do not add GPIOs that can only generate GPEs to the IRQ domain */ | |
1552 | for (i = 0; i < community->npins; i++) { | |
1553 | const struct pinctrl_pin_desc *desc; | |
1554 | u32 intsel; | |
1555 | ||
1556 | desc = &community->pins[i]; | |
1557 | ||
1558 | intsel = readl(chv_padreg(pctrl, desc->number, CHV_PADCTRL0)); | |
1559 | intsel &= CHV_PADCTRL0_INTSEL_MASK; | |
1560 | intsel >>= CHV_PADCTRL0_INTSEL_SHIFT; | |
1561 | ||
1562 | if (intsel >= community->nirqs) | |
37398985 | 1563 | clear_bit(desc->number, valid_mask); |
5fbe5b58 LW |
1564 | } |
1565 | } | |
1566 | ||
82d9beb4 HG |
1567 | static int chv_gpio_irq_init_hw(struct gpio_chip *chip) |
1568 | { | |
1569 | struct chv_pinctrl *pctrl = gpiochip_get_data(chip); | |
1570 | ||
1571 | /* | |
1572 | * The same set of machines in chv_no_valid_mask[] have incorrectly | |
1573 | * configured GPIOs that generate spurious interrupts so we use | |
1574 | * this same list to apply another quirk for them. | |
1575 | * | |
1576 | * See also https://bugzilla.kernel.org/show_bug.cgi?id=197953. | |
1577 | */ | |
1578 | if (!pctrl->chip.irq.init_valid_mask) { | |
1579 | /* | |
1580 | * Mask all interrupts the community is able to generate | |
1581 | * but leave the ones that can only generate GPEs unmasked. | |
1582 | */ | |
1583 | chv_writel(GENMASK(31, pctrl->community->nirqs), | |
1584 | pctrl->regs + CHV_INTMASK); | |
1585 | } | |
1586 | ||
1587 | /* Clear all interrupts */ | |
1588 | chv_writel(0xffff, pctrl->regs + CHV_INTSTAT); | |
1589 | ||
1590 | return 0; | |
1591 | } | |
1592 | ||
bd90633a HG |
1593 | static int chv_gpio_add_pin_ranges(struct gpio_chip *chip) |
1594 | { | |
1595 | struct chv_pinctrl *pctrl = gpiochip_get_data(chip); | |
1596 | const struct chv_community *community = pctrl->community; | |
1597 | const struct chv_gpio_pinrange *range; | |
1598 | int ret, i; | |
1599 | ||
1600 | for (i = 0; i < community->ngpio_ranges; i++) { | |
1601 | range = &community->gpio_ranges[i]; | |
1602 | ret = gpiochip_add_pin_range(chip, dev_name(pctrl->dev), | |
1603 | range->base, range->base, | |
1604 | range->npins); | |
1605 | if (ret) { | |
1606 | dev_err(pctrl->dev, "failed to add GPIO pin range\n"); | |
1607 | return ret; | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | return 0; | |
1612 | } | |
1613 | ||
6e08d6bb MW |
1614 | static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq) |
1615 | { | |
1616 | const struct chv_gpio_pinrange *range; | |
1617 | struct gpio_chip *chip = &pctrl->chip; | |
70365027 | 1618 | bool need_valid_mask = !dmi_check_system(chv_no_valid_mask); |
03c4749d MW |
1619 | const struct chv_community *community = pctrl->community; |
1620 | int ret, i, irq_base; | |
6e08d6bb MW |
1621 | |
1622 | *chip = chv_gpio_chip; | |
1623 | ||
03c4749d | 1624 | chip->ngpio = community->pins[community->npins - 1].number + 1; |
6e08d6bb | 1625 | chip->label = dev_name(pctrl->dev); |
bd90633a | 1626 | chip->add_pin_ranges = chv_gpio_add_pin_ranges; |
58383c78 | 1627 | chip->parent = pctrl->dev; |
6e08d6bb | 1628 | chip->base = -1; |
6e08d6bb | 1629 | |
b9a19bdb HG |
1630 | pctrl->irq = irq; |
1631 | pctrl->irqchip.name = "chv-gpio"; | |
1632 | pctrl->irqchip.irq_startup = chv_gpio_irq_startup; | |
1633 | pctrl->irqchip.irq_ack = chv_gpio_irq_ack; | |
1634 | pctrl->irqchip.irq_mask = chv_gpio_irq_mask; | |
1635 | pctrl->irqchip.irq_unmask = chv_gpio_irq_unmask; | |
1636 | pctrl->irqchip.irq_set_type = chv_gpio_irq_type; | |
1637 | pctrl->irqchip.flags = IRQCHIP_SKIP_SET_WAKE; | |
6e08d6bb | 1638 | |
b9a19bdb HG |
1639 | chip->irq.chip = &pctrl->irqchip; |
1640 | chip->irq.init_hw = chv_gpio_irq_init_hw; | |
1641 | chip->irq.parent_handler = chv_gpio_irq_handler; | |
1642 | chip->irq.num_parents = 1; | |
1643 | chip->irq.parents = &pctrl->irq; | |
1644 | chip->irq.default_type = IRQ_TYPE_NONE; | |
1645 | chip->irq.handler = handle_bad_irq; | |
1646 | if (need_valid_mask) { | |
1647 | chip->irq.init_valid_mask = chv_init_irq_valid_mask; | |
1648 | } else { | |
845e405e | 1649 | irq_base = devm_irq_alloc_descs(pctrl->dev, -1, 0, |
83b9dc11 | 1650 | community->npins, NUMA_NO_NODE); |
845e405e GS |
1651 | if (irq_base < 0) { |
1652 | dev_err(pctrl->dev, "Failed to allocate IRQ numbers\n"); | |
1653 | return irq_base; | |
1654 | } | |
845e405e GS |
1655 | } |
1656 | ||
b9a19bdb | 1657 | ret = devm_gpiochip_add_data(pctrl->dev, chip, pctrl); |
6e08d6bb | 1658 | if (ret) { |
b9a19bdb | 1659 | dev_err(pctrl->dev, "Failed to register gpiochip\n"); |
d1073418 | 1660 | return ret; |
6e08d6bb MW |
1661 | } |
1662 | ||
83b9dc11 MW |
1663 | if (!need_valid_mask) { |
1664 | for (i = 0; i < community->ngpio_ranges; i++) { | |
1665 | range = &community->gpio_ranges[i]; | |
1666 | ||
1667 | irq_domain_associate_many(chip->irq.domain, irq_base, | |
1668 | range->base, range->npins); | |
1669 | irq_base += range->npins; | |
1670 | } | |
1671 | } | |
1672 | ||
6e08d6bb | 1673 | return 0; |
6e08d6bb MW |
1674 | } |
1675 | ||
a0b02859 HG |
1676 | static acpi_status chv_pinctrl_mmio_access_handler(u32 function, |
1677 | acpi_physical_address address, u32 bits, u64 *value, | |
1678 | void *handler_context, void *region_context) | |
1679 | { | |
1680 | struct chv_pinctrl *pctrl = region_context; | |
1681 | unsigned long flags; | |
1682 | acpi_status ret = AE_OK; | |
1683 | ||
1684 | raw_spin_lock_irqsave(&chv_lock, flags); | |
1685 | ||
1686 | if (function == ACPI_WRITE) | |
1687 | chv_writel((u32)(*value), pctrl->regs + (u32)address); | |
1688 | else if (function == ACPI_READ) | |
1689 | *value = readl(pctrl->regs + (u32)address); | |
1690 | else | |
1691 | ret = AE_BAD_PARAMETER; | |
1692 | ||
1693 | raw_spin_unlock_irqrestore(&chv_lock, flags); | |
1694 | ||
1695 | return ret; | |
1696 | } | |
1697 | ||
6e08d6bb MW |
1698 | static int chv_pinctrl_probe(struct platform_device *pdev) |
1699 | { | |
1700 | struct chv_pinctrl *pctrl; | |
1701 | struct acpi_device *adev; | |
a0b02859 | 1702 | acpi_status status; |
6e08d6bb MW |
1703 | int ret, irq, i; |
1704 | ||
1705 | adev = ACPI_COMPANION(&pdev->dev); | |
1706 | if (!adev) | |
1707 | return -ENODEV; | |
1708 | ||
1709 | pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL); | |
1710 | if (!pctrl) | |
1711 | return -ENOMEM; | |
1712 | ||
1713 | for (i = 0; i < ARRAY_SIZE(chv_communities); i++) | |
1714 | if (!strcmp(adev->pnp.unique_id, chv_communities[i]->uid)) { | |
1715 | pctrl->community = chv_communities[i]; | |
1716 | break; | |
1717 | } | |
1718 | if (i == ARRAY_SIZE(chv_communities)) | |
1719 | return -ENODEV; | |
1720 | ||
6e08d6bb MW |
1721 | pctrl->dev = &pdev->dev; |
1722 | ||
9eb457b5 MW |
1723 | #ifdef CONFIG_PM_SLEEP |
1724 | pctrl->saved_pin_context = devm_kcalloc(pctrl->dev, | |
1725 | pctrl->community->npins, sizeof(*pctrl->saved_pin_context), | |
1726 | GFP_KERNEL); | |
1727 | if (!pctrl->saved_pin_context) | |
1728 | return -ENOMEM; | |
1729 | #endif | |
1730 | ||
a86f12b2 | 1731 | pctrl->regs = devm_platform_ioremap_resource(pdev, 0); |
6e08d6bb MW |
1732 | if (IS_ERR(pctrl->regs)) |
1733 | return PTR_ERR(pctrl->regs); | |
1734 | ||
1735 | irq = platform_get_irq(pdev, 0); | |
57afe3ea | 1736 | if (irq < 0) |
6e08d6bb | 1737 | return irq; |
6e08d6bb MW |
1738 | |
1739 | pctrl->pctldesc = chv_pinctrl_desc; | |
1740 | pctrl->pctldesc.name = dev_name(&pdev->dev); | |
1741 | pctrl->pctldesc.pins = pctrl->community->pins; | |
1742 | pctrl->pctldesc.npins = pctrl->community->npins; | |
1743 | ||
7cf061fa LD |
1744 | pctrl->pctldev = devm_pinctrl_register(&pdev->dev, &pctrl->pctldesc, |
1745 | pctrl); | |
323de9ef | 1746 | if (IS_ERR(pctrl->pctldev)) { |
6e08d6bb | 1747 | dev_err(&pdev->dev, "failed to register pinctrl driver\n"); |
323de9ef | 1748 | return PTR_ERR(pctrl->pctldev); |
6e08d6bb MW |
1749 | } |
1750 | ||
1751 | ret = chv_gpio_probe(pctrl, irq); | |
7cf061fa | 1752 | if (ret) |
6e08d6bb | 1753 | return ret; |
6e08d6bb | 1754 | |
a0b02859 HG |
1755 | status = acpi_install_address_space_handler(adev->handle, |
1756 | pctrl->community->acpi_space_id, | |
1757 | chv_pinctrl_mmio_access_handler, | |
1758 | NULL, pctrl); | |
1759 | if (ACPI_FAILURE(status)) | |
1760 | dev_err(&pdev->dev, "failed to install ACPI addr space handler\n"); | |
1761 | ||
6e08d6bb MW |
1762 | platform_set_drvdata(pdev, pctrl); |
1763 | ||
1764 | return 0; | |
1765 | } | |
1766 | ||
a0b02859 HG |
1767 | static int chv_pinctrl_remove(struct platform_device *pdev) |
1768 | { | |
1769 | struct chv_pinctrl *pctrl = platform_get_drvdata(pdev); | |
1770 | ||
1771 | acpi_remove_address_space_handler(ACPI_COMPANION(&pdev->dev), | |
1772 | pctrl->community->acpi_space_id, | |
1773 | chv_pinctrl_mmio_access_handler); | |
1774 | ||
1775 | return 0; | |
1776 | } | |
1777 | ||
9eb457b5 | 1778 | #ifdef CONFIG_PM_SLEEP |
d2cdf5dc | 1779 | static int chv_pinctrl_suspend_noirq(struct device *dev) |
9eb457b5 | 1780 | { |
a4833c60 | 1781 | struct chv_pinctrl *pctrl = dev_get_drvdata(dev); |
56211121 | 1782 | unsigned long flags; |
9eb457b5 MW |
1783 | int i; |
1784 | ||
56211121 MW |
1785 | raw_spin_lock_irqsave(&chv_lock, flags); |
1786 | ||
9eb457b5 MW |
1787 | pctrl->saved_intmask = readl(pctrl->regs + CHV_INTMASK); |
1788 | ||
1789 | for (i = 0; i < pctrl->community->npins; i++) { | |
1790 | const struct pinctrl_pin_desc *desc; | |
1791 | struct chv_pin_context *ctx; | |
1792 | void __iomem *reg; | |
1793 | ||
1794 | desc = &pctrl->community->pins[i]; | |
1795 | if (chv_pad_locked(pctrl, desc->number)) | |
1796 | continue; | |
1797 | ||
1798 | ctx = &pctrl->saved_pin_context[i]; | |
1799 | ||
1800 | reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0); | |
1801 | ctx->padctrl0 = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE; | |
1802 | ||
1803 | reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1); | |
1804 | ctx->padctrl1 = readl(reg); | |
1805 | } | |
1806 | ||
56211121 MW |
1807 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
1808 | ||
9eb457b5 MW |
1809 | return 0; |
1810 | } | |
1811 | ||
d2cdf5dc | 1812 | static int chv_pinctrl_resume_noirq(struct device *dev) |
9eb457b5 | 1813 | { |
a4833c60 | 1814 | struct chv_pinctrl *pctrl = dev_get_drvdata(dev); |
56211121 | 1815 | unsigned long flags; |
9eb457b5 MW |
1816 | int i; |
1817 | ||
56211121 MW |
1818 | raw_spin_lock_irqsave(&chv_lock, flags); |
1819 | ||
9eb457b5 MW |
1820 | /* |
1821 | * Mask all interrupts before restoring per-pin configuration | |
1822 | * registers because we don't know in which state BIOS left them | |
1823 | * upon exiting suspend. | |
1824 | */ | |
1825 | chv_writel(0, pctrl->regs + CHV_INTMASK); | |
1826 | ||
1827 | for (i = 0; i < pctrl->community->npins; i++) { | |
1828 | const struct pinctrl_pin_desc *desc; | |
1829 | const struct chv_pin_context *ctx; | |
1830 | void __iomem *reg; | |
1831 | u32 val; | |
1832 | ||
1833 | desc = &pctrl->community->pins[i]; | |
1834 | if (chv_pad_locked(pctrl, desc->number)) | |
1835 | continue; | |
1836 | ||
1837 | ctx = &pctrl->saved_pin_context[i]; | |
1838 | ||
1839 | /* Only restore if our saved state differs from the current */ | |
1840 | reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL0); | |
1841 | val = readl(reg) & ~CHV_PADCTRL0_GPIORXSTATE; | |
1842 | if (ctx->padctrl0 != val) { | |
1843 | chv_writel(ctx->padctrl0, reg); | |
1844 | dev_dbg(pctrl->dev, "restored pin %2u ctrl0 0x%08x\n", | |
1845 | desc->number, readl(reg)); | |
1846 | } | |
1847 | ||
1848 | reg = chv_padreg(pctrl, desc->number, CHV_PADCTRL1); | |
1849 | val = readl(reg); | |
1850 | if (ctx->padctrl1 != val) { | |
1851 | chv_writel(ctx->padctrl1, reg); | |
1852 | dev_dbg(pctrl->dev, "restored pin %2u ctrl1 0x%08x\n", | |
1853 | desc->number, readl(reg)); | |
1854 | } | |
1855 | } | |
1856 | ||
1857 | /* | |
1858 | * Now that all pins are restored to known state, we can restore | |
1859 | * the interrupt mask register as well. | |
1860 | */ | |
1861 | chv_writel(0xffff, pctrl->regs + CHV_INTSTAT); | |
1862 | chv_writel(pctrl->saved_intmask, pctrl->regs + CHV_INTMASK); | |
1863 | ||
56211121 MW |
1864 | raw_spin_unlock_irqrestore(&chv_lock, flags); |
1865 | ||
9eb457b5 MW |
1866 | return 0; |
1867 | } | |
1868 | #endif | |
1869 | ||
1870 | static const struct dev_pm_ops chv_pinctrl_pm_ops = { | |
d2cdf5dc MW |
1871 | SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(chv_pinctrl_suspend_noirq, |
1872 | chv_pinctrl_resume_noirq) | |
9eb457b5 MW |
1873 | }; |
1874 | ||
6e08d6bb MW |
1875 | static const struct acpi_device_id chv_pinctrl_acpi_match[] = { |
1876 | { "INT33FF" }, | |
1877 | { } | |
1878 | }; | |
1879 | MODULE_DEVICE_TABLE(acpi, chv_pinctrl_acpi_match); | |
1880 | ||
1881 | static struct platform_driver chv_pinctrl_driver = { | |
1882 | .probe = chv_pinctrl_probe, | |
a0b02859 | 1883 | .remove = chv_pinctrl_remove, |
6e08d6bb MW |
1884 | .driver = { |
1885 | .name = "cherryview-pinctrl", | |
9eb457b5 | 1886 | .pm = &chv_pinctrl_pm_ops, |
6e08d6bb MW |
1887 | .acpi_match_table = chv_pinctrl_acpi_match, |
1888 | }, | |
1889 | }; | |
1890 | ||
1891 | static int __init chv_pinctrl_init(void) | |
1892 | { | |
1893 | return platform_driver_register(&chv_pinctrl_driver); | |
1894 | } | |
1895 | subsys_initcall(chv_pinctrl_init); | |
1896 | ||
1897 | static void __exit chv_pinctrl_exit(void) | |
1898 | { | |
1899 | platform_driver_unregister(&chv_pinctrl_driver); | |
1900 | } | |
1901 | module_exit(chv_pinctrl_exit); | |
1902 | ||
1903 | MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); | |
1904 | MODULE_DESCRIPTION("Intel Cherryview/Braswell pinctrl driver"); | |
1905 | MODULE_LICENSE("GPL v2"); |