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96915234 MYK |
1 | /* |
2 | * drivers/usb/otg/ab8500_usb.c | |
3 | * | |
0c380c0e | 4 | * USB transceiver driver for AB8500 family chips |
96915234 | 5 | * |
0c380c0e | 6 | * Copyright (C) 2010-2013 ST-Ericsson AB |
96915234 | 7 | * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> |
0c380c0e | 8 | * Avinash Kumar <avinash.kumar@stericsson.com> |
f85bff5d | 9 | * Thirupathi Chippakurthy <thirupathi.chippakurthy@stericsson.com> |
96915234 MYK |
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 as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/platform_device.h> | |
29 | #include <linux/usb/otg.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/notifier.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/delay.h> | |
d0ed0645 MYK |
34 | #include <linux/clk.h> |
35 | #include <linux/err.h> | |
96915234 | 36 | #include <linux/mfd/abx500.h> |
ee66e653 | 37 | #include <linux/mfd/abx500/ab8500.h> |
af6882be | 38 | #include <linux/usb/musb-ux500.h> |
e65b36c0 | 39 | #include <linux/regulator/consumer.h> |
899f0f56 | 40 | #include <linux/pinctrl/consumer.h> |
96915234 | 41 | |
7124631a | 42 | /* Bank AB8500_SYS_CTRL2_BLOCK */ |
96915234 | 43 | #define AB8500_MAIN_WD_CTRL_REG 0x01 |
7124631a SB |
44 | |
45 | /* Bank AB8500_USB */ | |
96915234 | 46 | #define AB8500_USB_LINE_STAT_REG 0x80 |
af6882be | 47 | #define AB8505_USB_LINE_STAT_REG 0x94 |
0c380c0e | 48 | #define AB8540_USB_LINK_STAT_REG 0x94 |
f85bff5d | 49 | #define AB9540_USB_LINK_STAT_REG 0x94 |
0c380c0e | 50 | #define AB8540_USB_OTG_CTL_REG 0x87 |
96915234 | 51 | #define AB8500_USB_PHY_CTRL_REG 0x8A |
0c380c0e | 52 | #define AB8540_VBUS_CTRL_REG 0x82 |
96915234 | 53 | |
7124631a SB |
54 | /* Bank AB8500_DEVELOPMENT */ |
55 | #define AB8500_BANK12_ACCESS 0x00 | |
56 | ||
57 | /* Bank AB8500_DEBUG */ | |
0c380c0e | 58 | #define AB8540_DEBUG 0x32 |
7124631a SB |
59 | #define AB8500_USB_PHY_TUNE1 0x05 |
60 | #define AB8500_USB_PHY_TUNE2 0x06 | |
61 | #define AB8500_USB_PHY_TUNE3 0x07 | |
62 | ||
0c380c0e FB |
63 | /* Bank AB8500_INTERRUPT */ |
64 | #define AB8500_IT_SOURCE2_REG 0x01 | |
65 | ||
96915234 MYK |
66 | #define AB8500_BIT_OTG_STAT_ID (1 << 0) |
67 | #define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0) | |
68 | #define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1) | |
69 | #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) | |
70 | #define AB8500_BIT_WD_CTRL_KICK (1 << 1) | |
0c380c0e FB |
71 | #define AB8500_BIT_SOURCE2_VBUSDET (1 << 7) |
72 | #define AB8540_BIT_OTG_CTL_VBUS_VALID_ENA (1 << 0) | |
73 | #define AB8540_BIT_OTG_CTL_ID_HOST_ENA (1 << 1) | |
74 | #define AB8540_BIT_OTG_CTL_ID_DEV_ENA (1 << 5) | |
75 | #define AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA (1 << 0) | |
96915234 | 76 | |
96915234 MYK |
77 | #define AB8500_WD_KICK_DELAY_US 100 /* usec */ |
78 | #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ | |
af6882be | 79 | #define AB8500_V20_31952_DISABLE_DELAY_US 100 /* usec */ |
96915234 MYK |
80 | |
81 | /* Usb line status register */ | |
82 | enum ab8500_usb_link_status { | |
af6882be FB |
83 | USB_LINK_NOT_CONFIGURED_8500 = 0, |
84 | USB_LINK_STD_HOST_NC_8500, | |
85 | USB_LINK_STD_HOST_C_NS_8500, | |
86 | USB_LINK_STD_HOST_C_S_8500, | |
87 | USB_LINK_HOST_CHG_NM_8500, | |
88 | USB_LINK_HOST_CHG_HS_8500, | |
89 | USB_LINK_HOST_CHG_HS_CHIRP_8500, | |
90 | USB_LINK_DEDICATED_CHG_8500, | |
91 | USB_LINK_ACA_RID_A_8500, | |
92 | USB_LINK_ACA_RID_B_8500, | |
93 | USB_LINK_ACA_RID_C_NM_8500, | |
94 | USB_LINK_ACA_RID_C_HS_8500, | |
95 | USB_LINK_ACA_RID_C_HS_CHIRP_8500, | |
96 | USB_LINK_HM_IDGND_8500, | |
97 | USB_LINK_RESERVED_8500, | |
98 | USB_LINK_NOT_VALID_LINK_8500, | |
99 | }; | |
100 | ||
101 | enum ab8505_usb_link_status { | |
102 | USB_LINK_NOT_CONFIGURED_8505 = 0, | |
103 | USB_LINK_STD_HOST_NC_8505, | |
104 | USB_LINK_STD_HOST_C_NS_8505, | |
105 | USB_LINK_STD_HOST_C_S_8505, | |
106 | USB_LINK_CDP_8505, | |
107 | USB_LINK_RESERVED0_8505, | |
108 | USB_LINK_RESERVED1_8505, | |
109 | USB_LINK_DEDICATED_CHG_8505, | |
110 | USB_LINK_ACA_RID_A_8505, | |
111 | USB_LINK_ACA_RID_B_8505, | |
112 | USB_LINK_ACA_RID_C_NM_8505, | |
113 | USB_LINK_RESERVED2_8505, | |
114 | USB_LINK_RESERVED3_8505, | |
115 | USB_LINK_HM_IDGND_8505, | |
116 | USB_LINK_CHARGERPORT_NOT_OK_8505, | |
117 | USB_LINK_CHARGER_DM_HIGH_8505, | |
118 | USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8505, | |
119 | USB_LINK_STD_UPSTREAM_NO_IDGNG_NO_VBUS_8505, | |
120 | USB_LINK_STD_UPSTREAM_8505, | |
121 | USB_LINK_CHARGER_SE1_8505, | |
122 | USB_LINK_CARKIT_CHGR_1_8505, | |
123 | USB_LINK_CARKIT_CHGR_2_8505, | |
124 | USB_LINK_ACA_DOCK_CHGR_8505, | |
125 | USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8505, | |
126 | USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8505, | |
127 | USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8505, | |
128 | USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8505, | |
129 | USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8505, | |
130 | }; | |
131 | ||
0c380c0e FB |
132 | enum ab8540_usb_link_status { |
133 | USB_LINK_NOT_CONFIGURED_8540 = 0, | |
134 | USB_LINK_STD_HOST_NC_8540, | |
135 | USB_LINK_STD_HOST_C_NS_8540, | |
136 | USB_LINK_STD_HOST_C_S_8540, | |
137 | USB_LINK_CDP_8540, | |
138 | USB_LINK_RESERVED0_8540, | |
139 | USB_LINK_RESERVED1_8540, | |
140 | USB_LINK_DEDICATED_CHG_8540, | |
141 | USB_LINK_ACA_RID_A_8540, | |
142 | USB_LINK_ACA_RID_B_8540, | |
143 | USB_LINK_ACA_RID_C_NM_8540, | |
144 | USB_LINK_RESERVED2_8540, | |
145 | USB_LINK_RESERVED3_8540, | |
146 | USB_LINK_HM_IDGND_8540, | |
147 | USB_LINK_CHARGERPORT_NOT_OK_8540, | |
148 | USB_LINK_CHARGER_DM_HIGH_8540, | |
149 | USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540, | |
150 | USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540, | |
151 | USB_LINK_STD_UPSTREAM_8540, | |
152 | USB_LINK_CHARGER_SE1_8540, | |
153 | USB_LINK_CARKIT_CHGR_1_8540, | |
154 | USB_LINK_CARKIT_CHGR_2_8540, | |
155 | USB_LINK_ACA_DOCK_CHGR_8540, | |
156 | USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_8540, | |
157 | USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_8540, | |
158 | USB_LINK_SAMSUNG_UART_CBL_PHY_EN_8540, | |
159 | USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_8540, | |
160 | USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_8540 | |
161 | }; | |
162 | ||
f85bff5d FB |
163 | enum ab9540_usb_link_status { |
164 | USB_LINK_NOT_CONFIGURED_9540 = 0, | |
165 | USB_LINK_STD_HOST_NC_9540, | |
166 | USB_LINK_STD_HOST_C_NS_9540, | |
167 | USB_LINK_STD_HOST_C_S_9540, | |
168 | USB_LINK_CDP_9540, | |
169 | USB_LINK_RESERVED0_9540, | |
170 | USB_LINK_RESERVED1_9540, | |
171 | USB_LINK_DEDICATED_CHG_9540, | |
172 | USB_LINK_ACA_RID_A_9540, | |
173 | USB_LINK_ACA_RID_B_9540, | |
174 | USB_LINK_ACA_RID_C_NM_9540, | |
175 | USB_LINK_RESERVED2_9540, | |
176 | USB_LINK_RESERVED3_9540, | |
177 | USB_LINK_HM_IDGND_9540, | |
178 | USB_LINK_CHARGERPORT_NOT_OK_9540, | |
179 | USB_LINK_CHARGER_DM_HIGH_9540, | |
180 | USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540, | |
181 | USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540, | |
182 | USB_LINK_STD_UPSTREAM_9540, | |
183 | USB_LINK_CHARGER_SE1_9540, | |
184 | USB_LINK_CARKIT_CHGR_1_9540, | |
185 | USB_LINK_CARKIT_CHGR_2_9540, | |
186 | USB_LINK_ACA_DOCK_CHGR_9540, | |
187 | USB_LINK_SAMSUNG_BOOT_CBL_PHY_EN_9540, | |
188 | USB_LINK_SAMSUNG_BOOT_CBL_PHY_DISB_9540, | |
189 | USB_LINK_SAMSUNG_UART_CBL_PHY_EN_9540, | |
190 | USB_LINK_SAMSUNG_UART_CBL_PHY_DISB_9540, | |
191 | USB_LINK_MOTOROLA_FACTORY_CBL_PHY_EN_9540 | |
192 | }; | |
193 | ||
af6882be FB |
194 | enum ab8500_usb_mode { |
195 | USB_IDLE = 0, | |
196 | USB_PERIPHERAL, | |
197 | USB_HOST, | |
198 | USB_DEDICATED_CHG | |
96915234 MYK |
199 | }; |
200 | ||
bd4c9f02 FB |
201 | /* Register USB_LINK_STATUS interrupt */ |
202 | #define AB8500_USB_FLAG_USE_LINK_STATUS_IRQ (1 << 0) | |
203 | /* Register ID_WAKEUP_F interrupt */ | |
204 | #define AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ (1 << 1) | |
205 | /* Register VBUS_DET_F interrupt */ | |
206 | #define AB8500_USB_FLAG_USE_VBUS_DET_IRQ (1 << 2) | |
207 | /* Driver is using the ab-iddet driver*/ | |
208 | #define AB8500_USB_FLAG_USE_AB_IDDET (1 << 3) | |
209 | /* Enable setting regulators voltage */ | |
210 | #define AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE (1 << 4) | |
0c380c0e FB |
211 | /* Enable the check_vbus_status workaround */ |
212 | #define AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS (1 << 5) | |
213 | /* Enable the vbus host workaround */ | |
214 | #define AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK (1 << 6) | |
bd4c9f02 | 215 | |
96915234 | 216 | struct ab8500_usb { |
144713f3 | 217 | struct usb_phy phy; |
96915234 | 218 | struct device *dev; |
73f226cb | 219 | struct ab8500 *ab8500; |
96915234 | 220 | unsigned vbus_draw; |
96915234 | 221 | struct work_struct phy_dis_work; |
0c380c0e | 222 | struct work_struct vbus_event_work; |
af6882be | 223 | enum ab8500_usb_mode mode; |
d0ed0645 | 224 | struct clk *sysclk; |
e65b36c0 FB |
225 | struct regulator *v_ape; |
226 | struct regulator *v_musb; | |
227 | struct regulator *v_ulpi; | |
54dfbb08 | 228 | int saved_v_ulpi; |
af6882be | 229 | int previous_link_status_state; |
899f0f56 PC |
230 | struct pinctrl *pinctrl; |
231 | struct pinctrl_state *pins_sleep; | |
0c380c0e | 232 | bool enabled_charging_detection; |
bd4c9f02 | 233 | unsigned int flags; |
96915234 MYK |
234 | }; |
235 | ||
144713f3 | 236 | static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x) |
96915234 | 237 | { |
144713f3 | 238 | return container_of(x, struct ab8500_usb, phy); |
96915234 MYK |
239 | } |
240 | ||
241 | static void ab8500_usb_wd_workaround(struct ab8500_usb *ab) | |
242 | { | |
243 | abx500_set_register_interruptible(ab->dev, | |
244 | AB8500_SYS_CTRL2_BLOCK, | |
245 | AB8500_MAIN_WD_CTRL_REG, | |
246 | AB8500_BIT_WD_CTRL_ENABLE); | |
247 | ||
248 | udelay(AB8500_WD_KICK_DELAY_US); | |
249 | ||
250 | abx500_set_register_interruptible(ab->dev, | |
251 | AB8500_SYS_CTRL2_BLOCK, | |
252 | AB8500_MAIN_WD_CTRL_REG, | |
253 | (AB8500_BIT_WD_CTRL_ENABLE | |
254 | | AB8500_BIT_WD_CTRL_KICK)); | |
255 | ||
73f226cb | 256 | udelay(AB8500_WD_V11_DISABLE_DELAY_US); |
96915234 MYK |
257 | |
258 | abx500_set_register_interruptible(ab->dev, | |
259 | AB8500_SYS_CTRL2_BLOCK, | |
260 | AB8500_MAIN_WD_CTRL_REG, | |
261 | 0); | |
262 | } | |
263 | ||
54dfbb08 FB |
264 | static void ab8500_usb_regulator_enable(struct ab8500_usb *ab) |
265 | { | |
266 | int ret, volt; | |
267 | ||
88b1c78d FB |
268 | ret = regulator_enable(ab->v_ape); |
269 | if (ret) | |
270 | dev_err(ab->dev, "Failed to enable v-ape\n"); | |
54dfbb08 | 271 | |
bd4c9f02 | 272 | if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { |
54dfbb08 FB |
273 | ab->saved_v_ulpi = regulator_get_voltage(ab->v_ulpi); |
274 | if (ab->saved_v_ulpi < 0) | |
275 | dev_err(ab->dev, "Failed to get v_ulpi voltage\n"); | |
276 | ||
277 | ret = regulator_set_voltage(ab->v_ulpi, 1300000, 1350000); | |
278 | if (ret < 0) | |
279 | dev_err(ab->dev, "Failed to set the Vintcore to 1.3V, ret=%d\n", | |
280 | ret); | |
281 | ||
282 | ret = regulator_set_optimum_mode(ab->v_ulpi, 28000); | |
283 | if (ret < 0) | |
284 | dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n", | |
285 | ret); | |
286 | } | |
287 | ||
88b1c78d FB |
288 | ret = regulator_enable(ab->v_ulpi); |
289 | if (ret) | |
290 | dev_err(ab->dev, "Failed to enable vddulpivio18\n"); | |
54dfbb08 | 291 | |
bd4c9f02 | 292 | if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { |
54dfbb08 FB |
293 | volt = regulator_get_voltage(ab->v_ulpi); |
294 | if ((volt != 1300000) && (volt != 1350000)) | |
295 | dev_err(ab->dev, "Vintcore is not set to 1.3V volt=%d\n", | |
296 | volt); | |
297 | } | |
298 | ||
88b1c78d FB |
299 | ret = regulator_enable(ab->v_musb); |
300 | if (ret) | |
301 | dev_err(ab->dev, "Failed to enable musb_1v8\n"); | |
54dfbb08 FB |
302 | } |
303 | ||
304 | static void ab8500_usb_regulator_disable(struct ab8500_usb *ab) | |
305 | { | |
306 | int ret; | |
307 | ||
308 | regulator_disable(ab->v_musb); | |
309 | ||
310 | regulator_disable(ab->v_ulpi); | |
311 | ||
312 | /* USB is not the only consumer of Vintcore, restore old settings */ | |
bd4c9f02 | 313 | if (ab->flags & AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE) { |
54dfbb08 FB |
314 | if (ab->saved_v_ulpi > 0) { |
315 | ret = regulator_set_voltage(ab->v_ulpi, | |
316 | ab->saved_v_ulpi, ab->saved_v_ulpi); | |
317 | if (ret < 0) | |
318 | dev_err(ab->dev, "Failed to set the Vintcore to %duV, ret=%d\n", | |
319 | ab->saved_v_ulpi, ret); | |
320 | } | |
321 | ||
322 | ret = regulator_set_optimum_mode(ab->v_ulpi, 0); | |
323 | if (ret < 0) | |
324 | dev_err(ab->dev, "Failed to set optimum mode (ret=%d)\n", | |
325 | ret); | |
326 | } | |
327 | ||
328 | regulator_disable(ab->v_ape); | |
329 | } | |
330 | ||
af6882be FB |
331 | static void ab8500_usb_wd_linkstatus(struct ab8500_usb *ab, u8 bit) |
332 | { | |
333 | /* Workaround for v2.0 bug # 31952 */ | |
334 | if (is_ab8500_2p0(ab->ab8500)) { | |
335 | abx500_mask_and_set_register_interruptible(ab->dev, | |
336 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
337 | bit, bit); | |
338 | udelay(AB8500_V20_31952_DISABLE_DELAY_US); | |
339 | } | |
340 | } | |
341 | ||
c0ea7064 | 342 | static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) |
96915234 | 343 | { |
c0ea7064 FB |
344 | u8 bit; |
345 | bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN : | |
346 | AB8500_BIT_PHY_CTRL_DEVICE_EN; | |
96915234 | 347 | |
899f0f56 PC |
348 | /* mux and configure USB pins to DEFAULT state */ |
349 | ab->pinctrl = pinctrl_get_select(ab->dev, PINCTRL_STATE_DEFAULT); | |
350 | if (IS_ERR(ab->pinctrl)) | |
351 | dev_err(ab->dev, "could not get/set default pinstate\n"); | |
352 | ||
d0ed0645 MYK |
353 | if (clk_prepare_enable(ab->sysclk)) |
354 | dev_err(ab->dev, "can't prepare/enable clock\n"); | |
355 | ||
54dfbb08 FB |
356 | ab8500_usb_regulator_enable(ab); |
357 | ||
c0ea7064 FB |
358 | abx500_mask_and_set_register_interruptible(ab->dev, |
359 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
360 | bit, bit); | |
0c380c0e FB |
361 | |
362 | if (ab->flags & AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK) { | |
363 | if (sel_host) | |
364 | abx500_set_register_interruptible(ab->dev, | |
365 | AB8500_USB, AB8540_USB_OTG_CTL_REG, | |
366 | AB8540_BIT_OTG_CTL_VBUS_VALID_ENA | | |
367 | AB8540_BIT_OTG_CTL_ID_HOST_ENA | | |
368 | AB8540_BIT_OTG_CTL_ID_DEV_ENA); | |
369 | } | |
c0ea7064 FB |
370 | } |
371 | ||
372 | static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) | |
373 | { | |
374 | u8 bit; | |
375 | bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN : | |
376 | AB8500_BIT_PHY_CTRL_DEVICE_EN; | |
377 | ||
378 | ab8500_usb_wd_linkstatus(ab, bit); | |
379 | ||
380 | abx500_mask_and_set_register_interruptible(ab->dev, | |
381 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
382 | bit, 0); | |
96915234 | 383 | |
c0ea7064 FB |
384 | /* Needed to disable the phy.*/ |
385 | ab8500_usb_wd_workaround(ab); | |
54dfbb08 | 386 | |
d0ed0645 MYK |
387 | clk_disable_unprepare(ab->sysclk); |
388 | ||
54dfbb08 | 389 | ab8500_usb_regulator_disable(ab); |
899f0f56 PC |
390 | |
391 | if (!IS_ERR(ab->pinctrl)) { | |
392 | /* configure USB pins to SLEEP state */ | |
393 | ab->pins_sleep = pinctrl_lookup_state(ab->pinctrl, | |
394 | PINCTRL_STATE_SLEEP); | |
395 | ||
396 | if (IS_ERR(ab->pins_sleep)) | |
397 | dev_dbg(ab->dev, "could not get sleep pinstate\n"); | |
398 | else if (pinctrl_select_state(ab->pinctrl, ab->pins_sleep)) | |
399 | dev_err(ab->dev, "could not set pins to sleep state\n"); | |
400 | ||
3147dad6 FB |
401 | /* |
402 | * as USB pins are shared with iddet, release them to allow | |
899f0f56 PC |
403 | * iddet to request them |
404 | */ | |
405 | pinctrl_put(ab->pinctrl); | |
406 | } | |
96915234 MYK |
407 | } |
408 | ||
c0ea7064 FB |
409 | #define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_enable(ab, true) |
410 | #define ab8500_usb_host_phy_dis(ab) ab8500_usb_phy_disable(ab, true) | |
411 | #define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false) | |
412 | #define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false) | |
96915234 | 413 | |
f85bff5d FB |
414 | static int ab9540_usb_link_status_update(struct ab8500_usb *ab, |
415 | enum ab9540_usb_link_status lsts) | |
416 | { | |
417 | enum ux500_musb_vbus_id_status event = 0; | |
418 | ||
419 | dev_dbg(ab->dev, "ab9540_usb_link_status_update %d\n", lsts); | |
420 | ||
421 | if (ab->previous_link_status_state == USB_LINK_HM_IDGND_9540 && | |
422 | (lsts == USB_LINK_STD_HOST_C_NS_9540 || | |
423 | lsts == USB_LINK_STD_HOST_NC_9540)) | |
424 | return 0; | |
425 | ||
426 | if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_9540 && | |
427 | (lsts == USB_LINK_STD_HOST_NC_9540)) | |
428 | return 0; | |
429 | ||
430 | ab->previous_link_status_state = lsts; | |
431 | ||
432 | switch (lsts) { | |
433 | case USB_LINK_ACA_RID_B_9540: | |
434 | event = UX500_MUSB_RIDB; | |
435 | case USB_LINK_NOT_CONFIGURED_9540: | |
436 | case USB_LINK_RESERVED0_9540: | |
437 | case USB_LINK_RESERVED1_9540: | |
438 | case USB_LINK_RESERVED2_9540: | |
439 | case USB_LINK_RESERVED3_9540: | |
440 | if (ab->mode == USB_PERIPHERAL) | |
441 | atomic_notifier_call_chain(&ab->phy.notifier, | |
442 | UX500_MUSB_CLEAN, &ab->vbus_draw); | |
443 | ab->mode = USB_IDLE; | |
444 | ab->phy.otg->default_a = false; | |
445 | ab->vbus_draw = 0; | |
446 | if (event != UX500_MUSB_RIDB) | |
447 | event = UX500_MUSB_NONE; | |
448 | /* Fallback to default B_IDLE as nothing is connected. */ | |
449 | ab->phy.state = OTG_STATE_B_IDLE; | |
450 | break; | |
451 | ||
452 | case USB_LINK_ACA_RID_C_NM_9540: | |
453 | event = UX500_MUSB_RIDC; | |
454 | case USB_LINK_STD_HOST_NC_9540: | |
455 | case USB_LINK_STD_HOST_C_NS_9540: | |
456 | case USB_LINK_STD_HOST_C_S_9540: | |
457 | case USB_LINK_CDP_9540: | |
458 | if (ab->mode == USB_HOST) { | |
459 | ab->mode = USB_PERIPHERAL; | |
460 | ab8500_usb_host_phy_dis(ab); | |
461 | ab8500_usb_peri_phy_en(ab); | |
462 | atomic_notifier_call_chain(&ab->phy.notifier, | |
463 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
464 | } | |
465 | if (ab->mode == USB_IDLE) { | |
466 | ab->mode = USB_PERIPHERAL; | |
467 | ab8500_usb_peri_phy_en(ab); | |
468 | atomic_notifier_call_chain(&ab->phy.notifier, | |
469 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
470 | } | |
471 | if (event != UX500_MUSB_RIDC) | |
472 | event = UX500_MUSB_VBUS; | |
473 | break; | |
474 | ||
475 | case USB_LINK_ACA_RID_A_9540: | |
476 | event = UX500_MUSB_RIDA; | |
477 | case USB_LINK_HM_IDGND_9540: | |
478 | case USB_LINK_STD_UPSTREAM_9540: | |
479 | if (ab->mode == USB_PERIPHERAL) { | |
480 | ab->mode = USB_HOST; | |
481 | ab8500_usb_peri_phy_dis(ab); | |
482 | ab8500_usb_host_phy_en(ab); | |
483 | atomic_notifier_call_chain(&ab->phy.notifier, | |
484 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
485 | } | |
486 | if (ab->mode == USB_IDLE) { | |
487 | ab->mode = USB_HOST; | |
488 | ab8500_usb_host_phy_en(ab); | |
489 | atomic_notifier_call_chain(&ab->phy.notifier, | |
490 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
491 | } | |
492 | ab->phy.otg->default_a = true; | |
493 | if (event != UX500_MUSB_RIDA) | |
494 | event = UX500_MUSB_ID; | |
495 | ||
496 | atomic_notifier_call_chain(&ab->phy.notifier, | |
497 | event, &ab->vbus_draw); | |
498 | break; | |
499 | ||
500 | case USB_LINK_DEDICATED_CHG_9540: | |
501 | ab->mode = USB_DEDICATED_CHG; | |
502 | event = UX500_MUSB_CHARGER; | |
503 | atomic_notifier_call_chain(&ab->phy.notifier, | |
504 | event, &ab->vbus_draw); | |
505 | break; | |
506 | ||
507 | case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_9540: | |
508 | case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_9540: | |
509 | if (!(is_ab9540_2p0_or_earlier(ab->ab8500))) { | |
510 | event = UX500_MUSB_NONE; | |
511 | if (ab->mode == USB_HOST) { | |
512 | ab->phy.otg->default_a = false; | |
513 | ab->vbus_draw = 0; | |
514 | atomic_notifier_call_chain(&ab->phy.notifier, | |
515 | event, &ab->vbus_draw); | |
516 | ab8500_usb_host_phy_dis(ab); | |
517 | ab->mode = USB_IDLE; | |
518 | } | |
519 | if (ab->mode == USB_PERIPHERAL) { | |
520 | atomic_notifier_call_chain(&ab->phy.notifier, | |
521 | event, &ab->vbus_draw); | |
522 | ab8500_usb_peri_phy_dis(ab); | |
523 | atomic_notifier_call_chain(&ab->phy.notifier, | |
524 | UX500_MUSB_CLEAN, | |
525 | &ab->vbus_draw); | |
526 | ab->mode = USB_IDLE; | |
527 | ab->phy.otg->default_a = false; | |
528 | ab->vbus_draw = 0; | |
529 | } | |
530 | } | |
531 | break; | |
532 | ||
533 | default: | |
534 | break; | |
535 | } | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
0c380c0e FB |
540 | static int ab8540_usb_link_status_update(struct ab8500_usb *ab, |
541 | enum ab8540_usb_link_status lsts) | |
542 | { | |
543 | enum ux500_musb_vbus_id_status event = 0; | |
544 | ||
545 | dev_dbg(ab->dev, "ab8540_usb_link_status_update %d\n", lsts); | |
546 | ||
547 | if (ab->enabled_charging_detection) { | |
548 | /* Disable USB Charger detection */ | |
549 | abx500_mask_and_set_register_interruptible(ab->dev, | |
550 | AB8500_USB, AB8540_VBUS_CTRL_REG, | |
551 | AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, 0x00); | |
552 | ab->enabled_charging_detection = false; | |
553 | } | |
554 | ||
555 | /* | |
556 | * Spurious link_status interrupts are seen in case of a | |
557 | * disconnection of a device in IDGND and RIDA stage | |
558 | */ | |
559 | if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8540 && | |
560 | (lsts == USB_LINK_STD_HOST_C_NS_8540 || | |
561 | lsts == USB_LINK_STD_HOST_NC_8540)) | |
562 | return 0; | |
563 | ||
564 | if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8540 && | |
565 | (lsts == USB_LINK_STD_HOST_NC_8540)) | |
566 | return 0; | |
567 | ||
568 | ab->previous_link_status_state = lsts; | |
569 | ||
570 | switch (lsts) { | |
571 | case USB_LINK_ACA_RID_B_8540: | |
572 | event = UX500_MUSB_RIDB; | |
573 | case USB_LINK_NOT_CONFIGURED_8540: | |
574 | case USB_LINK_RESERVED0_8540: | |
575 | case USB_LINK_RESERVED1_8540: | |
576 | case USB_LINK_RESERVED2_8540: | |
577 | case USB_LINK_RESERVED3_8540: | |
578 | ab->mode = USB_IDLE; | |
579 | ab->phy.otg->default_a = false; | |
580 | ab->vbus_draw = 0; | |
581 | if (event != UX500_MUSB_RIDB) | |
582 | event = UX500_MUSB_NONE; | |
583 | /* | |
584 | * Fallback to default B_IDLE as nothing | |
585 | * is connected | |
586 | */ | |
587 | ab->phy.state = OTG_STATE_B_IDLE; | |
588 | break; | |
589 | ||
590 | case USB_LINK_ACA_RID_C_NM_8540: | |
591 | event = UX500_MUSB_RIDC; | |
592 | case USB_LINK_STD_HOST_NC_8540: | |
593 | case USB_LINK_STD_HOST_C_NS_8540: | |
594 | case USB_LINK_STD_HOST_C_S_8540: | |
595 | case USB_LINK_CDP_8540: | |
596 | if (ab->mode == USB_IDLE) { | |
597 | ab->mode = USB_PERIPHERAL; | |
598 | ab8500_usb_peri_phy_en(ab); | |
599 | atomic_notifier_call_chain(&ab->phy.notifier, | |
600 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
601 | } | |
602 | if (event != UX500_MUSB_RIDC) | |
603 | event = UX500_MUSB_VBUS; | |
604 | break; | |
605 | ||
606 | case USB_LINK_ACA_RID_A_8540: | |
607 | case USB_LINK_ACA_DOCK_CHGR_8540: | |
608 | event = UX500_MUSB_RIDA; | |
609 | case USB_LINK_HM_IDGND_8540: | |
610 | case USB_LINK_STD_UPSTREAM_8540: | |
611 | if (ab->mode == USB_IDLE) { | |
612 | ab->mode = USB_HOST; | |
613 | ab8500_usb_host_phy_en(ab); | |
614 | atomic_notifier_call_chain(&ab->phy.notifier, | |
615 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
616 | } | |
617 | ab->phy.otg->default_a = true; | |
618 | if (event != UX500_MUSB_RIDA) | |
619 | event = UX500_MUSB_ID; | |
620 | atomic_notifier_call_chain(&ab->phy.notifier, | |
621 | event, &ab->vbus_draw); | |
622 | break; | |
623 | ||
624 | case USB_LINK_DEDICATED_CHG_8540: | |
625 | ab->mode = USB_DEDICATED_CHG; | |
626 | event = UX500_MUSB_CHARGER; | |
627 | atomic_notifier_call_chain(&ab->phy.notifier, | |
628 | event, &ab->vbus_draw); | |
629 | break; | |
630 | ||
631 | case USB_LINK_PHYEN_NO_VBUS_NO_IDGND_8540: | |
632 | case USB_LINK_STD_UPSTREAM_NO_IDGNG_VBUS_8540: | |
633 | event = UX500_MUSB_NONE; | |
634 | if (ab->mode == USB_HOST) { | |
635 | ab->phy.otg->default_a = false; | |
636 | ab->vbus_draw = 0; | |
637 | atomic_notifier_call_chain(&ab->phy.notifier, | |
638 | event, &ab->vbus_draw); | |
639 | ab8500_usb_host_phy_dis(ab); | |
640 | ab->mode = USB_IDLE; | |
641 | } | |
642 | if (ab->mode == USB_PERIPHERAL) { | |
643 | atomic_notifier_call_chain(&ab->phy.notifier, | |
644 | event, &ab->vbus_draw); | |
645 | ab8500_usb_peri_phy_dis(ab); | |
646 | atomic_notifier_call_chain(&ab->phy.notifier, | |
647 | UX500_MUSB_CLEAN, &ab->vbus_draw); | |
648 | ab->mode = USB_IDLE; | |
649 | ab->phy.otg->default_a = false; | |
650 | ab->vbus_draw = 0; | |
651 | } | |
652 | break; | |
653 | ||
654 | default: | |
655 | event = UX500_MUSB_NONE; | |
656 | break; | |
657 | } | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
af6882be FB |
662 | static int ab8505_usb_link_status_update(struct ab8500_usb *ab, |
663 | enum ab8505_usb_link_status lsts) | |
96915234 | 664 | { |
af6882be | 665 | enum ux500_musb_vbus_id_status event = 0; |
96915234 | 666 | |
af6882be | 667 | dev_dbg(ab->dev, "ab8505_usb_link_status_update %d\n", lsts); |
96915234 | 668 | |
af6882be FB |
669 | /* |
670 | * Spurious link_status interrupts are seen at the time of | |
671 | * disconnection of a device in RIDA state | |
672 | */ | |
673 | if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8505 && | |
674 | (lsts == USB_LINK_STD_HOST_NC_8505)) | |
675 | return 0; | |
676 | ||
677 | ab->previous_link_status_state = lsts; | |
96915234 MYK |
678 | |
679 | switch (lsts) { | |
af6882be FB |
680 | case USB_LINK_ACA_RID_B_8505: |
681 | event = UX500_MUSB_RIDB; | |
682 | case USB_LINK_NOT_CONFIGURED_8505: | |
683 | case USB_LINK_RESERVED0_8505: | |
684 | case USB_LINK_RESERVED1_8505: | |
685 | case USB_LINK_RESERVED2_8505: | |
686 | case USB_LINK_RESERVED3_8505: | |
687 | ab->mode = USB_IDLE; | |
144713f3 | 688 | ab->phy.otg->default_a = false; |
96915234 | 689 | ab->vbus_draw = 0; |
af6882be FB |
690 | if (event != UX500_MUSB_RIDB) |
691 | event = UX500_MUSB_NONE; | |
692 | /* | |
693 | * Fallback to default B_IDLE as nothing | |
694 | * is connected | |
695 | */ | |
696 | ab->phy.state = OTG_STATE_B_IDLE; | |
96915234 MYK |
697 | break; |
698 | ||
af6882be FB |
699 | case USB_LINK_ACA_RID_C_NM_8505: |
700 | event = UX500_MUSB_RIDC; | |
701 | case USB_LINK_STD_HOST_NC_8505: | |
702 | case USB_LINK_STD_HOST_C_NS_8505: | |
703 | case USB_LINK_STD_HOST_C_S_8505: | |
704 | case USB_LINK_CDP_8505: | |
705 | if (ab->mode == USB_IDLE) { | |
706 | ab->mode = USB_PERIPHERAL; | |
96915234 | 707 | ab8500_usb_peri_phy_en(ab); |
af6882be FB |
708 | atomic_notifier_call_chain(&ab->phy.notifier, |
709 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
96915234 | 710 | } |
af6882be FB |
711 | if (event != UX500_MUSB_RIDC) |
712 | event = UX500_MUSB_VBUS; | |
96915234 MYK |
713 | break; |
714 | ||
af6882be FB |
715 | case USB_LINK_ACA_RID_A_8505: |
716 | case USB_LINK_ACA_DOCK_CHGR_8505: | |
717 | event = UX500_MUSB_RIDA; | |
718 | case USB_LINK_HM_IDGND_8505: | |
719 | if (ab->mode == USB_IDLE) { | |
720 | ab->mode = USB_HOST; | |
96915234 | 721 | ab8500_usb_host_phy_en(ab); |
af6882be FB |
722 | atomic_notifier_call_chain(&ab->phy.notifier, |
723 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
96915234 | 724 | } |
144713f3 | 725 | ab->phy.otg->default_a = true; |
af6882be FB |
726 | if (event != UX500_MUSB_RIDA) |
727 | event = UX500_MUSB_ID; | |
728 | atomic_notifier_call_chain(&ab->phy.notifier, | |
729 | event, &ab->vbus_draw); | |
96915234 MYK |
730 | break; |
731 | ||
af6882be FB |
732 | case USB_LINK_DEDICATED_CHG_8505: |
733 | ab->mode = USB_DEDICATED_CHG; | |
734 | event = UX500_MUSB_CHARGER; | |
735 | atomic_notifier_call_chain(&ab->phy.notifier, | |
736 | event, &ab->vbus_draw); | |
737 | break; | |
738 | ||
739 | default: | |
96915234 MYK |
740 | break; |
741 | } | |
742 | ||
af6882be FB |
743 | return 0; |
744 | } | |
745 | ||
746 | static int ab8500_usb_link_status_update(struct ab8500_usb *ab, | |
747 | enum ab8500_usb_link_status lsts) | |
748 | { | |
749 | enum ux500_musb_vbus_id_status event = 0; | |
750 | ||
751 | dev_dbg(ab->dev, "ab8500_usb_link_status_update %d\n", lsts); | |
752 | ||
753 | /* | |
754 | * Spurious link_status interrupts are seen in case of a | |
755 | * disconnection of a device in IDGND and RIDA stage | |
756 | */ | |
757 | if (ab->previous_link_status_state == USB_LINK_HM_IDGND_8500 && | |
758 | (lsts == USB_LINK_STD_HOST_C_NS_8500 || | |
759 | lsts == USB_LINK_STD_HOST_NC_8500)) | |
760 | return 0; | |
761 | ||
762 | if (ab->previous_link_status_state == USB_LINK_ACA_RID_A_8500 && | |
763 | lsts == USB_LINK_STD_HOST_NC_8500) | |
764 | return 0; | |
765 | ||
766 | ab->previous_link_status_state = lsts; | |
767 | ||
768 | switch (lsts) { | |
769 | case USB_LINK_ACA_RID_B_8500: | |
770 | event = UX500_MUSB_RIDB; | |
771 | case USB_LINK_NOT_CONFIGURED_8500: | |
772 | case USB_LINK_NOT_VALID_LINK_8500: | |
773 | ab->mode = USB_IDLE; | |
774 | ab->phy.otg->default_a = false; | |
775 | ab->vbus_draw = 0; | |
776 | if (event != UX500_MUSB_RIDB) | |
777 | event = UX500_MUSB_NONE; | |
778 | /* Fallback to default B_IDLE as nothing is connected */ | |
779 | ab->phy.state = OTG_STATE_B_IDLE; | |
780 | break; | |
781 | ||
782 | case USB_LINK_ACA_RID_C_NM_8500: | |
783 | case USB_LINK_ACA_RID_C_HS_8500: | |
784 | case USB_LINK_ACA_RID_C_HS_CHIRP_8500: | |
785 | event = UX500_MUSB_RIDC; | |
786 | case USB_LINK_STD_HOST_NC_8500: | |
787 | case USB_LINK_STD_HOST_C_NS_8500: | |
788 | case USB_LINK_STD_HOST_C_S_8500: | |
789 | case USB_LINK_HOST_CHG_NM_8500: | |
790 | case USB_LINK_HOST_CHG_HS_8500: | |
791 | case USB_LINK_HOST_CHG_HS_CHIRP_8500: | |
792 | if (ab->mode == USB_IDLE) { | |
793 | ab->mode = USB_PERIPHERAL; | |
794 | ab8500_usb_peri_phy_en(ab); | |
795 | atomic_notifier_call_chain(&ab->phy.notifier, | |
796 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
797 | } | |
798 | if (event != UX500_MUSB_RIDC) | |
799 | event = UX500_MUSB_VBUS; | |
800 | break; | |
801 | ||
802 | case USB_LINK_ACA_RID_A_8500: | |
803 | event = UX500_MUSB_RIDA; | |
804 | case USB_LINK_HM_IDGND_8500: | |
805 | if (ab->mode == USB_IDLE) { | |
806 | ab->mode = USB_HOST; | |
807 | ab8500_usb_host_phy_en(ab); | |
808 | atomic_notifier_call_chain(&ab->phy.notifier, | |
809 | UX500_MUSB_PREPARE, &ab->vbus_draw); | |
810 | } | |
811 | ab->phy.otg->default_a = true; | |
812 | if (event != UX500_MUSB_RIDA) | |
813 | event = UX500_MUSB_ID; | |
814 | atomic_notifier_call_chain(&ab->phy.notifier, | |
815 | event, &ab->vbus_draw); | |
816 | break; | |
817 | ||
818 | case USB_LINK_DEDICATED_CHG_8500: | |
819 | ab->mode = USB_DEDICATED_CHG; | |
820 | event = UX500_MUSB_CHARGER; | |
821 | atomic_notifier_call_chain(&ab->phy.notifier, | |
822 | event, &ab->vbus_draw); | |
823 | break; | |
824 | ||
825 | case USB_LINK_RESERVED_8500: | |
826 | break; | |
827 | } | |
96915234 MYK |
828 | |
829 | return 0; | |
830 | } | |
831 | ||
af6882be FB |
832 | /* |
833 | * Connection Sequence: | |
834 | * 1. Link Status Interrupt | |
835 | * 2. Enable AB clock | |
836 | * 3. Enable AB regulators | |
837 | * 4. Enable USB phy | |
838 | * 5. Reset the musb controller | |
839 | * 6. Switch the ULPI GPIO pins to fucntion mode | |
840 | * 7. Enable the musb Peripheral5 clock | |
841 | * 8. Restore MUSB context | |
842 | */ | |
843 | static int abx500_usb_link_status_update(struct ab8500_usb *ab) | |
96915234 | 844 | { |
af6882be FB |
845 | u8 reg; |
846 | int ret = 0; | |
847 | ||
848 | if (is_ab8500(ab->ab8500)) { | |
849 | enum ab8500_usb_link_status lsts; | |
850 | ||
851 | abx500_get_register_interruptible(ab->dev, | |
852 | AB8500_USB, AB8500_USB_LINE_STAT_REG, ®); | |
853 | lsts = (reg >> 3) & 0x0F; | |
854 | ret = ab8500_usb_link_status_update(ab, lsts); | |
855 | } else if (is_ab8505(ab->ab8500)) { | |
856 | enum ab8505_usb_link_status lsts; | |
857 | ||
858 | abx500_get_register_interruptible(ab->dev, | |
859 | AB8500_USB, AB8505_USB_LINE_STAT_REG, ®); | |
860 | lsts = (reg >> 3) & 0x1F; | |
861 | ret = ab8505_usb_link_status_update(ab, lsts); | |
0c380c0e FB |
862 | } else if (is_ab8540(ab->ab8500)) { |
863 | enum ab8540_usb_link_status lsts; | |
864 | ||
865 | abx500_get_register_interruptible(ab->dev, | |
866 | AB8500_USB, AB8540_USB_LINK_STAT_REG, ®); | |
867 | lsts = (reg >> 3) & 0xFF; | |
868 | ret = ab8540_usb_link_status_update(ab, lsts); | |
f85bff5d FB |
869 | } else if (is_ab9540(ab->ab8500)) { |
870 | enum ab9540_usb_link_status lsts; | |
871 | ||
872 | abx500_get_register_interruptible(ab->dev, | |
873 | AB8500_USB, AB9540_USB_LINK_STAT_REG, ®); | |
874 | lsts = (reg >> 3) & 0xFF; | |
875 | ret = ab9540_usb_link_status_update(ab, lsts); | |
af6882be FB |
876 | } |
877 | ||
878 | return ret; | |
879 | } | |
880 | ||
881 | /* | |
882 | * Disconnection Sequence: | |
883 | * 1. Disconect Interrupt | |
884 | * 2. Disable regulators | |
885 | * 3. Disable AB clock | |
886 | * 4. Disable the Phy | |
887 | * 5. Link Status Interrupt | |
888 | * 6. Disable Musb Clock | |
889 | */ | |
890 | static irqreturn_t ab8500_usb_disconnect_irq(int irq, void *data) | |
891 | { | |
892 | struct ab8500_usb *ab = (struct ab8500_usb *) data; | |
893 | enum usb_phy_events event = UX500_MUSB_NONE; | |
894 | ||
895 | /* Link status will not be updated till phy is disabled. */ | |
896 | if (ab->mode == USB_HOST) { | |
897 | ab->phy.otg->default_a = false; | |
898 | ab->vbus_draw = 0; | |
899 | atomic_notifier_call_chain(&ab->phy.notifier, | |
900 | event, &ab->vbus_draw); | |
901 | ab8500_usb_host_phy_dis(ab); | |
902 | ab->mode = USB_IDLE; | |
903 | } | |
904 | ||
905 | if (ab->mode == USB_PERIPHERAL) { | |
906 | atomic_notifier_call_chain(&ab->phy.notifier, | |
907 | event, &ab->vbus_draw); | |
908 | ab8500_usb_peri_phy_dis(ab); | |
909 | atomic_notifier_call_chain(&ab->phy.notifier, | |
910 | UX500_MUSB_CLEAN, &ab->vbus_draw); | |
911 | ab->mode = USB_IDLE; | |
912 | ab->phy.otg->default_a = false; | |
913 | ab->vbus_draw = 0; | |
914 | } | |
915 | ||
916 | if (is_ab8500_2p0(ab->ab8500)) { | |
917 | if (ab->mode == USB_DEDICATED_CHG) { | |
918 | ab8500_usb_wd_linkstatus(ab, | |
919 | AB8500_BIT_PHY_CTRL_DEVICE_EN); | |
920 | abx500_mask_and_set_register_interruptible(ab->dev, | |
921 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
922 | AB8500_BIT_PHY_CTRL_DEVICE_EN, 0); | |
923 | } | |
924 | } | |
96915234 | 925 | |
af6882be | 926 | return IRQ_HANDLED; |
96915234 MYK |
927 | } |
928 | ||
af6882be | 929 | static irqreturn_t ab8500_usb_link_status_irq(int irq, void *data) |
96915234 | 930 | { |
3147dad6 | 931 | struct ab8500_usb *ab = (struct ab8500_usb *)data; |
96915234 | 932 | |
af6882be | 933 | abx500_usb_link_status_update(ab); |
96915234 MYK |
934 | |
935 | return IRQ_HANDLED; | |
936 | } | |
937 | ||
938 | static void ab8500_usb_phy_disable_work(struct work_struct *work) | |
939 | { | |
940 | struct ab8500_usb *ab = container_of(work, struct ab8500_usb, | |
941 | phy_dis_work); | |
942 | ||
144713f3 | 943 | if (!ab->phy.otg->host) |
96915234 MYK |
944 | ab8500_usb_host_phy_dis(ab); |
945 | ||
144713f3 | 946 | if (!ab->phy.otg->gadget) |
96915234 MYK |
947 | ab8500_usb_peri_phy_dis(ab); |
948 | } | |
949 | ||
0c380c0e FB |
950 | /* Check if VBUS is set and linkstatus has not detected a cable. */ |
951 | static bool ab8500_usb_check_vbus_status(struct ab8500_usb *ab) | |
952 | { | |
953 | u8 isource2; | |
954 | u8 reg; | |
955 | enum ab8540_usb_link_status lsts; | |
956 | ||
957 | abx500_get_register_interruptible(ab->dev, | |
958 | AB8500_INTERRUPT, AB8500_IT_SOURCE2_REG, | |
959 | &isource2); | |
960 | ||
961 | /* If Vbus is below 3.6V abort */ | |
962 | if (!(isource2 & AB8500_BIT_SOURCE2_VBUSDET)) | |
963 | return false; | |
964 | ||
965 | abx500_get_register_interruptible(ab->dev, | |
966 | AB8500_USB, AB8540_USB_LINK_STAT_REG, | |
967 | ®); | |
968 | ||
969 | lsts = (reg >> 3) & 0xFF; | |
970 | ||
971 | /* Check if linkstatus has detected a cable */ | |
972 | if (lsts) | |
973 | return false; | |
974 | ||
975 | return true; | |
976 | } | |
977 | ||
978 | /* re-trigger charger detection again with watchdog re-kick. */ | |
979 | static void ab8500_usb_vbus_turn_on_event_work(struct work_struct *work) | |
980 | { | |
981 | struct ab8500_usb *ab = container_of(work, struct ab8500_usb, | |
982 | vbus_event_work); | |
983 | ||
984 | if (ab->mode != USB_IDLE) | |
985 | return; | |
986 | ||
987 | abx500_set_register_interruptible(ab->dev, | |
988 | AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, | |
989 | AB8500_BIT_WD_CTRL_ENABLE); | |
990 | ||
991 | udelay(100); | |
992 | ||
993 | abx500_set_register_interruptible(ab->dev, | |
994 | AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, | |
995 | AB8500_BIT_WD_CTRL_ENABLE | AB8500_BIT_WD_CTRL_KICK); | |
996 | ||
997 | udelay(100); | |
998 | ||
999 | /* Disable Main watchdog */ | |
1000 | abx500_set_register_interruptible(ab->dev, | |
1001 | AB8500_SYS_CTRL2_BLOCK, AB8500_MAIN_WD_CTRL_REG, | |
1002 | 0x0); | |
1003 | ||
1004 | /* Enable USB Charger detection */ | |
1005 | abx500_mask_and_set_register_interruptible(ab->dev, | |
1006 | AB8500_USB, AB8540_VBUS_CTRL_REG, | |
1007 | AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA, | |
1008 | AB8540_BIT_VBUS_CTRL_CHARG_DET_ENA); | |
1009 | ||
1010 | ab->enabled_charging_detection = true; | |
1011 | } | |
1012 | ||
c2a0ab6b SB |
1013 | static unsigned ab8500_eyediagram_workaroud(struct ab8500_usb *ab, unsigned mA) |
1014 | { | |
1015 | /* | |
1016 | * AB8500 V2 has eye diagram issues when drawing more than 100mA from | |
1017 | * VBUS. Set charging current to 100mA in case of standard host | |
1018 | */ | |
1019 | if (is_ab8500_2p0_or_earlier(ab->ab8500)) | |
1020 | if (mA > 100) | |
1021 | mA = 100; | |
1022 | ||
1023 | return mA; | |
1024 | } | |
1025 | ||
144713f3 | 1026 | static int ab8500_usb_set_power(struct usb_phy *phy, unsigned mA) |
96915234 MYK |
1027 | { |
1028 | struct ab8500_usb *ab; | |
1029 | ||
144713f3 | 1030 | if (!phy) |
96915234 MYK |
1031 | return -ENODEV; |
1032 | ||
144713f3 | 1033 | ab = phy_to_ab(phy); |
96915234 | 1034 | |
c2a0ab6b SB |
1035 | mA = ab8500_eyediagram_workaroud(ab, mA); |
1036 | ||
96915234 MYK |
1037 | ab->vbus_draw = mA; |
1038 | ||
77f4396e FB |
1039 | atomic_notifier_call_chain(&ab->phy.notifier, |
1040 | UX500_MUSB_VBUS, &ab->vbus_draw); | |
1041 | ||
96915234 MYK |
1042 | return 0; |
1043 | } | |
1044 | ||
86753811 | 1045 | static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend) |
96915234 MYK |
1046 | { |
1047 | /* TODO */ | |
1048 | return 0; | |
1049 | } | |
1050 | ||
144713f3 HK |
1051 | static int ab8500_usb_set_peripheral(struct usb_otg *otg, |
1052 | struct usb_gadget *gadget) | |
96915234 MYK |
1053 | { |
1054 | struct ab8500_usb *ab; | |
1055 | ||
1056 | if (!otg) | |
1057 | return -ENODEV; | |
1058 | ||
144713f3 | 1059 | ab = phy_to_ab(otg->phy); |
96915234 | 1060 | |
58823373 SB |
1061 | ab->phy.otg->gadget = gadget; |
1062 | ||
96915234 MYK |
1063 | /* Some drivers call this function in atomic context. |
1064 | * Do not update ab8500 registers directly till this | |
1065 | * is fixed. | |
1066 | */ | |
1067 | ||
3147dad6 | 1068 | if ((ab->mode != USB_IDLE) && !gadget) { |
58823373 | 1069 | ab->mode = USB_IDLE; |
96915234 | 1070 | schedule_work(&ab->phy_dis_work); |
96915234 MYK |
1071 | } |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
144713f3 | 1076 | static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host) |
96915234 MYK |
1077 | { |
1078 | struct ab8500_usb *ab; | |
1079 | ||
1080 | if (!otg) | |
1081 | return -ENODEV; | |
1082 | ||
144713f3 | 1083 | ab = phy_to_ab(otg->phy); |
96915234 | 1084 | |
58823373 SB |
1085 | ab->phy.otg->host = host; |
1086 | ||
96915234 MYK |
1087 | /* Some drivers call this function in atomic context. |
1088 | * Do not update ab8500 registers directly till this | |
1089 | * is fixed. | |
1090 | */ | |
1091 | ||
3147dad6 | 1092 | if ((ab->mode != USB_IDLE) && !host) { |
58823373 | 1093 | ab->mode = USB_IDLE; |
96915234 | 1094 | schedule_work(&ab->phy_dis_work); |
96915234 MYK |
1095 | } |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
fb21f37a SB |
1100 | static void ab8500_usb_restart_phy(struct ab8500_usb *ab) |
1101 | { | |
1102 | abx500_mask_and_set_register_interruptible(ab->dev, | |
1103 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
1104 | AB8500_BIT_PHY_CTRL_DEVICE_EN, | |
1105 | AB8500_BIT_PHY_CTRL_DEVICE_EN); | |
1106 | ||
1107 | udelay(100); | |
1108 | ||
1109 | abx500_mask_and_set_register_interruptible(ab->dev, | |
1110 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
1111 | AB8500_BIT_PHY_CTRL_DEVICE_EN, | |
1112 | 0); | |
1113 | ||
1114 | abx500_mask_and_set_register_interruptible(ab->dev, | |
1115 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
1116 | AB8500_BIT_PHY_CTRL_HOST_EN, | |
1117 | AB8500_BIT_PHY_CTRL_HOST_EN); | |
1118 | ||
1119 | udelay(100); | |
1120 | ||
1121 | abx500_mask_and_set_register_interruptible(ab->dev, | |
1122 | AB8500_USB, AB8500_USB_PHY_CTRL_REG, | |
1123 | AB8500_BIT_PHY_CTRL_HOST_EN, | |
1124 | 0); | |
1125 | } | |
1126 | ||
e65b36c0 FB |
1127 | static int ab8500_usb_regulator_get(struct ab8500_usb *ab) |
1128 | { | |
1129 | int err; | |
1130 | ||
1131 | ab->v_ape = devm_regulator_get(ab->dev, "v-ape"); | |
1132 | if (IS_ERR(ab->v_ape)) { | |
1133 | dev_err(ab->dev, "Could not get v-ape supply\n"); | |
1134 | err = PTR_ERR(ab->v_ape); | |
1135 | return err; | |
1136 | } | |
1137 | ||
1138 | ab->v_ulpi = devm_regulator_get(ab->dev, "vddulpivio18"); | |
1139 | if (IS_ERR(ab->v_ulpi)) { | |
1140 | dev_err(ab->dev, "Could not get vddulpivio18 supply\n"); | |
1141 | err = PTR_ERR(ab->v_ulpi); | |
1142 | return err; | |
1143 | } | |
1144 | ||
1145 | ab->v_musb = devm_regulator_get(ab->dev, "musb_1v8"); | |
1146 | if (IS_ERR(ab->v_musb)) { | |
1147 | dev_err(ab->dev, "Could not get musb_1v8 supply\n"); | |
1148 | err = PTR_ERR(ab->v_musb); | |
1149 | return err; | |
1150 | } | |
1151 | ||
1152 | return 0; | |
1153 | } | |
1154 | ||
af6882be FB |
1155 | static int ab8500_usb_irq_setup(struct platform_device *pdev, |
1156 | struct ab8500_usb *ab) | |
96915234 MYK |
1157 | { |
1158 | int err; | |
af6882be | 1159 | int irq; |
96915234 | 1160 | |
bd4c9f02 FB |
1161 | if (ab->flags & AB8500_USB_FLAG_USE_LINK_STATUS_IRQ) { |
1162 | irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS"); | |
1163 | if (irq < 0) { | |
1164 | dev_err(&pdev->dev, "Link status irq not found\n"); | |
1165 | return irq; | |
1166 | } | |
1167 | err = devm_request_threaded_irq(&pdev->dev, irq, NULL, | |
1168 | ab8500_usb_link_status_irq, | |
1169 | IRQF_NO_SUSPEND | IRQF_SHARED, | |
1170 | "usb-link-status", ab); | |
1171 | if (err < 0) { | |
1172 | dev_err(ab->dev, "request_irq failed for link status irq\n"); | |
1173 | return err; | |
1174 | } | |
96915234 MYK |
1175 | } |
1176 | ||
bd4c9f02 FB |
1177 | if (ab->flags & AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ) { |
1178 | irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); | |
1179 | if (irq < 0) { | |
1180 | dev_err(&pdev->dev, "ID fall irq not found\n"); | |
1181 | return irq; | |
1182 | } | |
1183 | err = devm_request_threaded_irq(&pdev->dev, irq, NULL, | |
1184 | ab8500_usb_disconnect_irq, | |
1185 | IRQF_NO_SUSPEND | IRQF_SHARED, | |
1186 | "usb-id-fall", ab); | |
1187 | if (err < 0) { | |
1188 | dev_err(ab->dev, "request_irq failed for ID fall irq\n"); | |
1189 | return err; | |
1190 | } | |
af6882be FB |
1191 | } |
1192 | ||
bd4c9f02 FB |
1193 | if (ab->flags & AB8500_USB_FLAG_USE_VBUS_DET_IRQ) { |
1194 | irq = platform_get_irq_byname(pdev, "VBUS_DET_F"); | |
1195 | if (irq < 0) { | |
1196 | dev_err(&pdev->dev, "VBUS fall irq not found\n"); | |
1197 | return irq; | |
1198 | } | |
1199 | err = devm_request_threaded_irq(&pdev->dev, irq, NULL, | |
1200 | ab8500_usb_disconnect_irq, | |
1201 | IRQF_NO_SUSPEND | IRQF_SHARED, | |
1202 | "usb-vbus-fall", ab); | |
1203 | if (err < 0) { | |
1204 | dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); | |
1205 | return err; | |
1206 | } | |
96915234 MYK |
1207 | } |
1208 | ||
1209 | return 0; | |
1210 | } | |
1211 | ||
16604a3c FB |
1212 | static void ab8500_usb_set_ab8500_tuning_values(struct ab8500_usb *ab) |
1213 | { | |
1214 | int err; | |
1215 | ||
1216 | /* Enable the PBT/Bank 0x12 access */ | |
1217 | err = abx500_set_register_interruptible(ab->dev, | |
1218 | AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); | |
1219 | if (err < 0) | |
1220 | dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", | |
1221 | err); | |
1222 | ||
1223 | err = abx500_set_register_interruptible(ab->dev, | |
1224 | AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); | |
1225 | if (err < 0) | |
1226 | dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", | |
1227 | err); | |
1228 | ||
1229 | err = abx500_set_register_interruptible(ab->dev, | |
1230 | AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x00); | |
1231 | if (err < 0) | |
1232 | dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", | |
1233 | err); | |
1234 | ||
1235 | err = abx500_set_register_interruptible(ab->dev, | |
1236 | AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78); | |
1237 | if (err < 0) | |
1238 | dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", | |
1239 | err); | |
1240 | ||
1241 | /* Switch to normal mode/disable Bank 0x12 access */ | |
1242 | err = abx500_set_register_interruptible(ab->dev, | |
1243 | AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); | |
1244 | if (err < 0) | |
1245 | dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", | |
1246 | err); | |
1247 | } | |
1248 | ||
1249 | static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab) | |
1250 | { | |
1251 | int err; | |
1252 | ||
1253 | /* Enable the PBT/Bank 0x12 access */ | |
1254 | err = abx500_mask_and_set_register_interruptible(ab->dev, | |
1255 | AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, | |
1256 | 0x01, 0x01); | |
1257 | if (err < 0) | |
1258 | dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", | |
1259 | err); | |
1260 | ||
1261 | err = abx500_mask_and_set_register_interruptible(ab->dev, | |
1262 | AB8500_DEBUG, AB8500_USB_PHY_TUNE1, | |
1263 | 0xC8, 0xC8); | |
1264 | if (err < 0) | |
1265 | dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", | |
1266 | err); | |
1267 | ||
1268 | err = abx500_mask_and_set_register_interruptible(ab->dev, | |
1269 | AB8500_DEBUG, AB8500_USB_PHY_TUNE2, | |
1270 | 0x60, 0x60); | |
1271 | if (err < 0) | |
1272 | dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", | |
1273 | err); | |
1274 | ||
1275 | err = abx500_mask_and_set_register_interruptible(ab->dev, | |
1276 | AB8500_DEBUG, AB8500_USB_PHY_TUNE3, | |
1277 | 0xFC, 0x80); | |
1278 | ||
1279 | if (err < 0) | |
1280 | dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", | |
1281 | err); | |
1282 | ||
1283 | /* Switch to normal mode/disable Bank 0x12 access */ | |
1284 | err = abx500_mask_and_set_register_interruptible(ab->dev, | |
1285 | AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, | |
1286 | 0x00, 0x00); | |
1287 | if (err < 0) | |
1288 | dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", | |
1289 | err); | |
1290 | } | |
1291 | ||
0c380c0e FB |
1292 | static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) |
1293 | { | |
1294 | int err; | |
1295 | ||
1296 | err = abx500_set_register_interruptible(ab->dev, | |
1297 | AB8540_DEBUG, AB8500_USB_PHY_TUNE1, 0xCC); | |
1298 | if (err < 0) | |
1299 | dev_err(ab->dev, "Failed to set PHY_TUNE1 register ret=%d\n", | |
1300 | err); | |
1301 | ||
1302 | err = abx500_set_register_interruptible(ab->dev, | |
1303 | AB8540_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); | |
1304 | if (err < 0) | |
1305 | dev_err(ab->dev, "Failed to set PHY_TUNE2 register ret=%d\n", | |
1306 | err); | |
1307 | ||
1308 | err = abx500_set_register_interruptible(ab->dev, | |
1309 | AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90); | |
1310 | if (err < 0) | |
1311 | dev_err(ab->dev, "Failed to set PHY_TUNE3 regester ret=%d\n", | |
1312 | err); | |
1313 | } | |
1314 | ||
f85bff5d FB |
1315 | static void ab8500_usb_set_ab9540_tuning_values(struct ab8500_usb *ab) |
1316 | { | |
1317 | int err; | |
1318 | ||
1319 | /* Enable the PBT/Bank 0x12 access */ | |
1320 | err = abx500_set_register_interruptible(ab->dev, | |
1321 | AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x01); | |
1322 | if (err < 0) | |
1323 | dev_err(ab->dev, "Failed to enable bank12 access err=%d\n", | |
1324 | err); | |
1325 | ||
1326 | err = abx500_set_register_interruptible(ab->dev, | |
1327 | AB8500_DEBUG, AB8500_USB_PHY_TUNE1, 0xC8); | |
1328 | if (err < 0) | |
1329 | dev_err(ab->dev, "Failed to set PHY_TUNE1 register err=%d\n", | |
1330 | err); | |
1331 | ||
1332 | err = abx500_set_register_interruptible(ab->dev, | |
1333 | AB8500_DEBUG, AB8500_USB_PHY_TUNE2, 0x60); | |
1334 | if (err < 0) | |
1335 | dev_err(ab->dev, "Failed to set PHY_TUNE2 register err=%d\n", | |
1336 | err); | |
1337 | ||
1338 | err = abx500_set_register_interruptible(ab->dev, | |
1339 | AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80); | |
1340 | if (err < 0) | |
1341 | dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", | |
1342 | err); | |
1343 | ||
1344 | /* Switch to normal mode/disable Bank 0x12 access */ | |
1345 | err = abx500_set_register_interruptible(ab->dev, | |
1346 | AB8500_DEVELOPMENT, AB8500_BANK12_ACCESS, 0x00); | |
1347 | if (err < 0) | |
1348 | dev_err(ab->dev, "Failed to switch bank12 access err=%d\n", | |
1349 | err); | |
1350 | } | |
1351 | ||
41ac7b3a | 1352 | static int ab8500_usb_probe(struct platform_device *pdev) |
96915234 MYK |
1353 | { |
1354 | struct ab8500_usb *ab; | |
73f226cb | 1355 | struct ab8500 *ab8500; |
144713f3 | 1356 | struct usb_otg *otg; |
96915234 MYK |
1357 | int err; |
1358 | int rev; | |
1359 | ||
73f226cb | 1360 | ab8500 = dev_get_drvdata(pdev->dev.parent); |
96915234 | 1361 | rev = abx500_get_chip_id(&pdev->dev); |
73f226cb FB |
1362 | |
1363 | if (is_ab8500_1p1_or_earlier(ab8500)) { | |
1364 | dev_err(&pdev->dev, "Unsupported AB8500 chip rev=%d\n", rev); | |
96915234 MYK |
1365 | return -ENODEV; |
1366 | } | |
1367 | ||
81ef6724 | 1368 | ab = devm_kzalloc(&pdev->dev, sizeof(*ab), GFP_KERNEL); |
96915234 MYK |
1369 | if (!ab) |
1370 | return -ENOMEM; | |
1371 | ||
81ef6724 FB |
1372 | otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL); |
1373 | if (!otg) | |
144713f3 | 1374 | return -ENOMEM; |
144713f3 | 1375 | |
96915234 | 1376 | ab->dev = &pdev->dev; |
73f226cb | 1377 | ab->ab8500 = ab8500; |
144713f3 HK |
1378 | ab->phy.dev = ab->dev; |
1379 | ab->phy.otg = otg; | |
1380 | ab->phy.label = "ab8500"; | |
1381 | ab->phy.set_suspend = ab8500_usb_set_suspend; | |
1382 | ab->phy.set_power = ab8500_usb_set_power; | |
1383 | ab->phy.state = OTG_STATE_UNDEFINED; | |
1384 | ||
1385 | otg->phy = &ab->phy; | |
1386 | otg->set_host = ab8500_usb_set_host; | |
1387 | otg->set_peripheral = ab8500_usb_set_peripheral; | |
96915234 | 1388 | |
bd4c9f02 FB |
1389 | if (is_ab8500(ab->ab8500)) { |
1390 | ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | | |
1391 | AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | | |
1392 | AB8500_USB_FLAG_USE_VBUS_DET_IRQ | | |
1393 | AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; | |
1394 | } else if (is_ab8505(ab->ab8500)) { | |
1395 | ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | | |
1396 | AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | | |
1397 | AB8500_USB_FLAG_USE_VBUS_DET_IRQ | | |
1398 | AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; | |
0c380c0e FB |
1399 | } else if (is_ab8540(ab->ab8500)) { |
1400 | ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | | |
1401 | AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS | | |
1402 | AB8500_USB_FLAG_USE_VBUS_HOST_QUIRK | | |
1403 | AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; | |
f85bff5d FB |
1404 | } else if (is_ab9540(ab->ab8500)) { |
1405 | ab->flags |= AB8500_USB_FLAG_USE_LINK_STATUS_IRQ | | |
1406 | AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; | |
1407 | if (is_ab9540_2p0_or_earlier(ab->ab8500)) | |
1408 | ab->flags |= AB8500_USB_FLAG_USE_ID_WAKEUP_IRQ | | |
1409 | AB8500_USB_FLAG_USE_VBUS_DET_IRQ; | |
bd4c9f02 FB |
1410 | } |
1411 | ||
1412 | /* Disable regulator voltage setting for AB8500 <= v2.0 */ | |
1413 | if (is_ab8500_2p0_or_earlier(ab->ab8500)) | |
1414 | ab->flags &= ~AB8500_USB_FLAG_REGULATOR_SET_VOLTAGE; | |
1415 | ||
96915234 MYK |
1416 | platform_set_drvdata(pdev, ab); |
1417 | ||
96915234 MYK |
1418 | /* all: Disable phy when called from set_host and set_peripheral */ |
1419 | INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); | |
1420 | ||
0c380c0e FB |
1421 | INIT_WORK(&ab->vbus_event_work, ab8500_usb_vbus_turn_on_event_work); |
1422 | ||
e65b36c0 FB |
1423 | err = ab8500_usb_regulator_get(ab); |
1424 | if (err) | |
1425 | return err; | |
1426 | ||
d0ed0645 MYK |
1427 | ab->sysclk = devm_clk_get(ab->dev, "sysclk"); |
1428 | if (IS_ERR(ab->sysclk)) { | |
1429 | dev_err(ab->dev, "Could not get sysclk.\n"); | |
1430 | return PTR_ERR(ab->sysclk); | |
1431 | } | |
1432 | ||
af6882be | 1433 | err = ab8500_usb_irq_setup(pdev, ab); |
96915234 | 1434 | if (err < 0) |
81ef6724 | 1435 | return err; |
96915234 | 1436 | |
662dca54 | 1437 | err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2); |
96915234 MYK |
1438 | if (err) { |
1439 | dev_err(&pdev->dev, "Can't register transceiver\n"); | |
81ef6724 | 1440 | return err; |
96915234 MYK |
1441 | } |
1442 | ||
16604a3c FB |
1443 | if (is_ab8500(ab->ab8500) && !is_ab8500_2p0_or_earlier(ab->ab8500)) |
1444 | /* Phy tuning values for AB8500 > v2.0 */ | |
1445 | ab8500_usb_set_ab8500_tuning_values(ab); | |
1446 | else if (is_ab8505(ab->ab8500)) | |
1447 | /* Phy tuning values for AB8505 */ | |
1448 | ab8500_usb_set_ab8505_tuning_values(ab); | |
0c380c0e FB |
1449 | else if (is_ab8540(ab->ab8500)) |
1450 | /* Phy tuning values for AB8540 */ | |
1451 | ab8500_usb_set_ab8540_tuning_values(ab); | |
f85bff5d FB |
1452 | else if (is_ab9540(ab->ab8500)) |
1453 | /* Phy tuning values for AB9540 */ | |
1454 | ab8500_usb_set_ab9540_tuning_values(ab); | |
7124631a | 1455 | |
af6882be FB |
1456 | /* Needed to enable ID detection. */ |
1457 | ab8500_usb_wd_workaround(ab); | |
1458 | ||
fb21f37a SB |
1459 | /* |
1460 | * This is required for usb-link-status to work properly when a | |
1461 | * cable is connected at boot time. | |
1462 | */ | |
1463 | ab8500_usb_restart_phy(ab); | |
1464 | ||
0c380c0e FB |
1465 | if (ab->flags & AB8500_USB_FLAG_USE_CHECK_VBUS_STATUS) { |
1466 | if (ab8500_usb_check_vbus_status(ab)) | |
1467 | schedule_work(&ab->vbus_event_work); | |
1468 | } | |
1469 | ||
8db12231 SB |
1470 | abx500_usb_link_status_update(ab); |
1471 | ||
73f226cb | 1472 | dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev); |
96915234 MYK |
1473 | |
1474 | return 0; | |
96915234 MYK |
1475 | } |
1476 | ||
fb4e98ab | 1477 | static int ab8500_usb_remove(struct platform_device *pdev) |
96915234 MYK |
1478 | { |
1479 | struct ab8500_usb *ab = platform_get_drvdata(pdev); | |
1480 | ||
96915234 | 1481 | cancel_work_sync(&ab->phy_dis_work); |
0c380c0e | 1482 | cancel_work_sync(&ab->vbus_event_work); |
96915234 | 1483 | |
662dca54 | 1484 | usb_remove_phy(&ab->phy); |
96915234 | 1485 | |
f5ef7b42 MYK |
1486 | if (ab->mode == USB_HOST) |
1487 | ab8500_usb_host_phy_dis(ab); | |
1488 | else if (ab->mode == USB_PERIPHERAL) | |
1489 | ab8500_usb_peri_phy_dis(ab); | |
96915234 | 1490 | |
96915234 MYK |
1491 | return 0; |
1492 | } | |
1493 | ||
b3affc39 FB |
1494 | static struct platform_device_id ab8500_usb_devtype[] = { |
1495 | { .name = "ab8500-usb", }, | |
0c380c0e | 1496 | { .name = "ab8540-usb", }, |
f85bff5d | 1497 | { .name = "ab9540-usb", }, |
b3affc39 FB |
1498 | { /* sentinel */ } |
1499 | }; | |
1500 | MODULE_DEVICE_TABLE(platform, ab8500_usb_devtype); | |
1501 | ||
96915234 MYK |
1502 | static struct platform_driver ab8500_usb_driver = { |
1503 | .probe = ab8500_usb_probe, | |
7690417d | 1504 | .remove = ab8500_usb_remove, |
b3affc39 | 1505 | .id_table = ab8500_usb_devtype, |
96915234 | 1506 | .driver = { |
b3affc39 | 1507 | .name = "abx5x0-usb", |
96915234 MYK |
1508 | .owner = THIS_MODULE, |
1509 | }, | |
1510 | }; | |
1511 | ||
1512 | static int __init ab8500_usb_init(void) | |
1513 | { | |
1514 | return platform_driver_register(&ab8500_usb_driver); | |
1515 | } | |
1516 | subsys_initcall(ab8500_usb_init); | |
1517 | ||
1518 | static void __exit ab8500_usb_exit(void) | |
1519 | { | |
1520 | platform_driver_unregister(&ab8500_usb_driver); | |
1521 | } | |
1522 | module_exit(ab8500_usb_exit); | |
1523 | ||
96915234 | 1524 | MODULE_AUTHOR("ST-Ericsson AB"); |
0c380c0e | 1525 | MODULE_DESCRIPTION("AB8500 family usb transceiver driver"); |
96915234 | 1526 | MODULE_LICENSE("GPL"); |