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3ec72a2a RL |
1 | /* |
2 | * Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller | |
3 | * Configuration via SMBus. | |
4 | * | |
5 | * Copyright (c) 2017 SKIDATA AG | |
6 | * | |
7 | * This work is based on the USB3503 driver by Dongjin Kim and | |
8 | * a not-accepted patch by Fabien Lahoudere, see: | |
9 | * https://patchwork.kernel.org/patch/9257715/ | |
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 | ||
22 | #include <linux/delay.h> | |
23 | #include <linux/gpio.h> | |
24 | #include <linux/i2c.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/nls.h> | |
27 | #include <linux/of_device.h> | |
28 | #include <linux/of_gpio.h> | |
29 | #include <linux/slab.h> | |
30 | ||
31 | /* Internal Register Set Addresses & Default Values acc. to DS00001692C */ | |
32 | #define USB251XB_ADDR_VENDOR_ID_LSB 0x00 | |
33 | #define USB251XB_ADDR_VENDOR_ID_MSB 0x01 | |
34 | #define USB251XB_DEF_VENDOR_ID 0x0424 | |
35 | ||
36 | #define USB251XB_ADDR_PRODUCT_ID_LSB 0x02 | |
37 | #define USB251XB_ADDR_PRODUCT_ID_MSB 0x03 | |
38 | #define USB251XB_DEF_PRODUCT_ID_12 0x2512 /* USB2512B/12Bi */ | |
39 | #define USB251XB_DEF_PRODUCT_ID_13 0x2513 /* USB2513B/13Bi */ | |
40 | #define USB251XB_DEF_PRODUCT_ID_14 0x2514 /* USB2514B/14Bi */ | |
41 | ||
42 | #define USB251XB_ADDR_DEVICE_ID_LSB 0x04 | |
43 | #define USB251XB_ADDR_DEVICE_ID_MSB 0x05 | |
44 | #define USB251XB_DEF_DEVICE_ID 0x0BB3 | |
45 | ||
46 | #define USB251XB_ADDR_CONFIG_DATA_1 0x06 | |
47 | #define USB251XB_DEF_CONFIG_DATA_1 0x9B | |
48 | #define USB251XB_ADDR_CONFIG_DATA_2 0x07 | |
49 | #define USB251XB_DEF_CONFIG_DATA_2 0x20 | |
50 | #define USB251XB_ADDR_CONFIG_DATA_3 0x08 | |
51 | #define USB251XB_DEF_CONFIG_DATA_3 0x02 | |
52 | ||
53 | #define USB251XB_ADDR_NON_REMOVABLE_DEVICES 0x09 | |
54 | #define USB251XB_DEF_NON_REMOVABLE_DEVICES 0x00 | |
55 | ||
56 | #define USB251XB_ADDR_PORT_DISABLE_SELF 0x0A | |
57 | #define USB251XB_DEF_PORT_DISABLE_SELF 0x00 | |
58 | #define USB251XB_ADDR_PORT_DISABLE_BUS 0x0B | |
59 | #define USB251XB_DEF_PORT_DISABLE_BUS 0x00 | |
60 | ||
61 | #define USB251XB_ADDR_MAX_POWER_SELF 0x0C | |
62 | #define USB251XB_DEF_MAX_POWER_SELF 0x01 | |
63 | #define USB251XB_ADDR_MAX_POWER_BUS 0x0D | |
64 | #define USB251XB_DEF_MAX_POWER_BUS 0x32 | |
65 | ||
66 | #define USB251XB_ADDR_MAX_CURRENT_SELF 0x0E | |
67 | #define USB251XB_DEF_MAX_CURRENT_SELF 0x01 | |
68 | #define USB251XB_ADDR_MAX_CURRENT_BUS 0x0F | |
69 | #define USB251XB_DEF_MAX_CURRENT_BUS 0x32 | |
70 | ||
71 | #define USB251XB_ADDR_POWER_ON_TIME 0x10 | |
72 | #define USB251XB_DEF_POWER_ON_TIME 0x32 | |
73 | ||
74 | #define USB251XB_ADDR_LANGUAGE_ID_HIGH 0x11 | |
75 | #define USB251XB_ADDR_LANGUAGE_ID_LOW 0x12 | |
76 | #define USB251XB_DEF_LANGUAGE_ID 0x0000 | |
77 | ||
78 | #define USB251XB_STRING_BUFSIZE 62 | |
79 | #define USB251XB_ADDR_MANUFACTURER_STRING_LEN 0x13 | |
80 | #define USB251XB_ADDR_MANUFACTURER_STRING 0x16 | |
81 | #define USB251XB_DEF_MANUFACTURER_STRING "Microchip" | |
82 | ||
83 | #define USB251XB_ADDR_PRODUCT_STRING_LEN 0x14 | |
84 | #define USB251XB_ADDR_PRODUCT_STRING 0x54 | |
85 | #define USB251XB_DEF_PRODUCT_STRING "USB251xB/xBi" | |
86 | ||
87 | #define USB251XB_ADDR_SERIAL_STRING_LEN 0x15 | |
88 | #define USB251XB_ADDR_SERIAL_STRING 0x92 | |
89 | #define USB251XB_DEF_SERIAL_STRING "" | |
90 | ||
91 | #define USB251XB_ADDR_BATTERY_CHARGING_ENABLE 0xD0 | |
92 | #define USB251XB_DEF_BATTERY_CHARGING_ENABLE 0x00 | |
93 | ||
94 | #define USB251XB_ADDR_BOOST_UP 0xF6 | |
95 | #define USB251XB_DEF_BOOST_UP 0x00 | |
96 | #define USB251XB_ADDR_BOOST_X 0xF8 | |
97 | #define USB251XB_DEF_BOOST_X 0x00 | |
98 | ||
99 | #define USB251XB_ADDR_PORT_SWAP 0xFA | |
100 | #define USB251XB_DEF_PORT_SWAP 0x00 | |
101 | ||
102 | #define USB251XB_ADDR_PORT_MAP_12 0xFB | |
103 | #define USB251XB_DEF_PORT_MAP_12 0x00 | |
104 | #define USB251XB_ADDR_PORT_MAP_34 0xFC | |
105 | #define USB251XB_DEF_PORT_MAP_34 0x00 /* USB2513B/i & USB2514B/i only */ | |
106 | ||
107 | #define USB251XB_ADDR_STATUS_COMMAND 0xFF | |
108 | #define USB251XB_STATUS_COMMAND_SMBUS_DOWN 0x04 | |
109 | #define USB251XB_STATUS_COMMAND_RESET 0x02 | |
110 | #define USB251XB_STATUS_COMMAND_ATTACH 0x01 | |
111 | ||
112 | #define USB251XB_I2C_REG_SZ 0x100 | |
113 | #define USB251XB_I2C_WRITE_SZ 0x10 | |
114 | ||
115 | #define DRIVER_NAME "usb251xb" | |
116 | #define DRIVER_DESC "Microchip USB 2.0 Hi-Speed Hub Controller" | |
117 | #define DRIVER_VERSION "1.0" | |
118 | ||
119 | struct usb251xb { | |
120 | struct device *dev; | |
121 | struct i2c_client *i2c; | |
122 | u8 skip_config; | |
123 | int gpio_reset; | |
124 | u16 vendor_id; | |
125 | u16 product_id; | |
126 | u16 device_id; | |
127 | u8 conf_data1; | |
128 | u8 conf_data2; | |
129 | u8 conf_data3; | |
130 | u8 non_rem_dev; | |
131 | u8 port_disable_sp; | |
132 | u8 port_disable_bp; | |
133 | u8 max_power_sp; | |
134 | u8 max_power_bp; | |
135 | u8 max_current_sp; | |
136 | u8 max_current_bp; | |
137 | u8 power_on_time; | |
138 | u16 lang_id; | |
139 | u8 manufacturer_len; | |
140 | u8 product_len; | |
141 | u8 serial_len; | |
142 | char manufacturer[USB251XB_STRING_BUFSIZE]; | |
143 | char product[USB251XB_STRING_BUFSIZE]; | |
144 | char serial[USB251XB_STRING_BUFSIZE]; | |
145 | u8 bat_charge_en; | |
146 | u8 boost_up; | |
147 | u8 boost_x; | |
148 | u8 port_swap; | |
149 | u8 port_map12; | |
150 | u8 port_map34; | |
151 | u8 status; | |
152 | }; | |
153 | ||
154 | struct usb251xb_data { | |
155 | u16 product_id; | |
156 | char product_str[USB251XB_STRING_BUFSIZE / 2]; /* ASCII string */ | |
157 | }; | |
158 | ||
159 | static const struct usb251xb_data usb2512b_data = { | |
160 | .product_id = 0x2512, | |
161 | .product_str = "USB2512B", | |
162 | }; | |
163 | ||
164 | static const struct usb251xb_data usb2512bi_data = { | |
165 | .product_id = 0x2512, | |
166 | .product_str = "USB2512Bi", | |
167 | }; | |
168 | ||
169 | static const struct usb251xb_data usb2513b_data = { | |
170 | .product_id = 0x2513, | |
171 | .product_str = "USB2513B", | |
172 | }; | |
173 | ||
174 | static const struct usb251xb_data usb2513bi_data = { | |
175 | .product_id = 0x2513, | |
176 | .product_str = "USB2513Bi", | |
177 | }; | |
178 | ||
179 | static const struct usb251xb_data usb2514b_data = { | |
180 | .product_id = 0x2514, | |
181 | .product_str = "USB2514B", | |
182 | }; | |
183 | ||
184 | static const struct usb251xb_data usb2514bi_data = { | |
185 | .product_id = 0x2514, | |
186 | .product_str = "USB2514Bi", | |
187 | }; | |
188 | ||
189 | static void usb251xb_reset(struct usb251xb *hub, int state) | |
190 | { | |
191 | if (!gpio_is_valid(hub->gpio_reset)) | |
192 | return; | |
193 | ||
194 | gpio_set_value_cansleep(hub->gpio_reset, state); | |
195 | ||
196 | /* wait for hub recovery/stabilization */ | |
197 | if (state) | |
198 | usleep_range(500, 750); /* >=500us at power on */ | |
199 | else | |
200 | usleep_range(1, 10); /* >=1us at power down */ | |
201 | } | |
202 | ||
203 | static int usb251xb_connect(struct usb251xb *hub) | |
204 | { | |
205 | struct device *dev = hub->dev; | |
206 | int err, i; | |
207 | char i2c_wb[USB251XB_I2C_REG_SZ]; | |
208 | ||
209 | memset(i2c_wb, 0, USB251XB_I2C_REG_SZ); | |
210 | ||
211 | if (hub->skip_config) { | |
212 | dev_info(dev, "Skip hub configuration, only attach.\n"); | |
213 | i2c_wb[0] = 0x01; | |
214 | i2c_wb[1] = USB251XB_STATUS_COMMAND_ATTACH; | |
215 | ||
216 | usb251xb_reset(hub, 1); | |
217 | ||
218 | err = i2c_smbus_write_i2c_block_data(hub->i2c, | |
219 | USB251XB_ADDR_STATUS_COMMAND, 2, i2c_wb); | |
220 | if (err) { | |
221 | dev_err(dev, "attaching hub failed: %d\n", err); | |
222 | return err; | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
227 | i2c_wb[USB251XB_ADDR_VENDOR_ID_MSB] = (hub->vendor_id >> 8) & 0xFF; | |
228 | i2c_wb[USB251XB_ADDR_VENDOR_ID_LSB] = hub->vendor_id & 0xFF; | |
229 | i2c_wb[USB251XB_ADDR_PRODUCT_ID_MSB] = (hub->product_id >> 8) & 0xFF; | |
230 | i2c_wb[USB251XB_ADDR_PRODUCT_ID_LSB] = hub->product_id & 0xFF; | |
231 | i2c_wb[USB251XB_ADDR_DEVICE_ID_MSB] = (hub->device_id >> 8) & 0xFF; | |
232 | i2c_wb[USB251XB_ADDR_DEVICE_ID_LSB] = hub->device_id & 0xFF; | |
233 | i2c_wb[USB251XB_ADDR_CONFIG_DATA_1] = hub->conf_data1; | |
234 | i2c_wb[USB251XB_ADDR_CONFIG_DATA_2] = hub->conf_data2; | |
235 | i2c_wb[USB251XB_ADDR_CONFIG_DATA_3] = hub->conf_data3; | |
236 | i2c_wb[USB251XB_ADDR_NON_REMOVABLE_DEVICES] = hub->non_rem_dev; | |
237 | i2c_wb[USB251XB_ADDR_PORT_DISABLE_SELF] = hub->port_disable_sp; | |
238 | i2c_wb[USB251XB_ADDR_PORT_DISABLE_BUS] = hub->port_disable_bp; | |
239 | i2c_wb[USB251XB_ADDR_MAX_POWER_SELF] = hub->max_power_sp; | |
240 | i2c_wb[USB251XB_ADDR_MAX_POWER_BUS] = hub->max_power_bp; | |
241 | i2c_wb[USB251XB_ADDR_MAX_CURRENT_SELF] = hub->max_current_sp; | |
242 | i2c_wb[USB251XB_ADDR_MAX_CURRENT_BUS] = hub->max_current_bp; | |
243 | i2c_wb[USB251XB_ADDR_POWER_ON_TIME] = hub->power_on_time; | |
244 | i2c_wb[USB251XB_ADDR_LANGUAGE_ID_HIGH] = (hub->lang_id >> 8) & 0xFF; | |
245 | i2c_wb[USB251XB_ADDR_LANGUAGE_ID_LOW] = hub->lang_id & 0xFF; | |
246 | i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING_LEN] = hub->manufacturer_len; | |
247 | i2c_wb[USB251XB_ADDR_PRODUCT_STRING_LEN] = hub->product_len; | |
248 | i2c_wb[USB251XB_ADDR_SERIAL_STRING_LEN] = hub->serial_len; | |
249 | memcpy(&i2c_wb[USB251XB_ADDR_MANUFACTURER_STRING], hub->manufacturer, | |
250 | USB251XB_STRING_BUFSIZE); | |
251 | memcpy(&i2c_wb[USB251XB_ADDR_SERIAL_STRING], hub->serial, | |
252 | USB251XB_STRING_BUFSIZE); | |
253 | memcpy(&i2c_wb[USB251XB_ADDR_PRODUCT_STRING], hub->product, | |
254 | USB251XB_STRING_BUFSIZE); | |
255 | i2c_wb[USB251XB_ADDR_BATTERY_CHARGING_ENABLE] = hub->bat_charge_en; | |
256 | i2c_wb[USB251XB_ADDR_BOOST_UP] = hub->boost_up; | |
257 | i2c_wb[USB251XB_ADDR_BOOST_X] = hub->boost_x; | |
258 | i2c_wb[USB251XB_ADDR_PORT_SWAP] = hub->port_swap; | |
259 | i2c_wb[USB251XB_ADDR_PORT_MAP_12] = hub->port_map12; | |
260 | i2c_wb[USB251XB_ADDR_PORT_MAP_34] = hub->port_map34; | |
261 | i2c_wb[USB251XB_ADDR_STATUS_COMMAND] = USB251XB_STATUS_COMMAND_ATTACH; | |
262 | ||
263 | usb251xb_reset(hub, 1); | |
264 | ||
265 | /* write registers */ | |
266 | for (i = 0; i < (USB251XB_I2C_REG_SZ / USB251XB_I2C_WRITE_SZ); i++) { | |
267 | int offset = i * USB251XB_I2C_WRITE_SZ; | |
268 | char wbuf[USB251XB_I2C_WRITE_SZ + 1]; | |
269 | ||
270 | /* The first data byte transferred tells the hub how many data | |
271 | * bytes will follow (byte count). | |
272 | */ | |
273 | wbuf[0] = USB251XB_I2C_WRITE_SZ; | |
274 | memcpy(&wbuf[1], &i2c_wb[offset], USB251XB_I2C_WRITE_SZ); | |
275 | ||
276 | dev_dbg(dev, "writing %d byte block %d to 0x%02X\n", | |
277 | USB251XB_I2C_WRITE_SZ, i, offset); | |
278 | ||
279 | err = i2c_smbus_write_i2c_block_data(hub->i2c, offset, | |
280 | USB251XB_I2C_WRITE_SZ + 1, | |
281 | wbuf); | |
282 | if (err) | |
283 | goto out_err; | |
284 | } | |
285 | ||
286 | dev_info(dev, "Hub configuration was successful.\n"); | |
287 | return 0; | |
288 | ||
289 | out_err: | |
290 | dev_err(dev, "configuring block %d failed: %d\n", i, err); | |
291 | return err; | |
292 | } | |
293 | ||
294 | #ifdef CONFIG_OF | |
295 | static int usb251xb_get_ofdata(struct usb251xb *hub, | |
296 | struct usb251xb_data *data) | |
297 | { | |
298 | struct device *dev = hub->dev; | |
299 | struct device_node *np = dev->of_node; | |
300 | int len, err, i; | |
301 | u32 *property_u32 = NULL; | |
302 | const u32 *cproperty_u32; | |
303 | const char *cproperty_char; | |
304 | char str[USB251XB_STRING_BUFSIZE / 2]; | |
305 | ||
306 | if (!np) { | |
307 | dev_err(dev, "failed to get ofdata\n"); | |
308 | return -ENODEV; | |
309 | } | |
310 | ||
311 | if (of_get_property(np, "skip-config", NULL)) | |
312 | hub->skip_config = 1; | |
313 | else | |
314 | hub->skip_config = 0; | |
315 | ||
316 | hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); | |
317 | if (hub->gpio_reset == -EPROBE_DEFER) | |
318 | return -EPROBE_DEFER; | |
319 | if (gpio_is_valid(hub->gpio_reset)) { | |
320 | err = devm_gpio_request_one(dev, hub->gpio_reset, | |
321 | GPIOF_OUT_INIT_LOW, | |
322 | "usb251xb reset"); | |
323 | if (err) { | |
324 | dev_err(dev, | |
325 | "unable to request GPIO %d as reset pin (%d)\n", | |
326 | hub->gpio_reset, err); | |
327 | return err; | |
328 | } | |
329 | } | |
330 | ||
331 | if (of_property_read_u16_array(np, "vendor-id", &hub->vendor_id, 1)) | |
332 | hub->vendor_id = USB251XB_DEF_VENDOR_ID; | |
333 | ||
334 | if (of_property_read_u16_array(np, "product-id", | |
335 | &hub->product_id, 1)) | |
336 | hub->product_id = data->product_id; | |
337 | ||
338 | if (of_property_read_u16_array(np, "device-id", &hub->device_id, 1)) | |
339 | hub->device_id = USB251XB_DEF_DEVICE_ID; | |
340 | ||
341 | hub->conf_data1 = USB251XB_DEF_CONFIG_DATA_1; | |
342 | if (of_get_property(np, "self-powered", NULL)) { | |
343 | hub->conf_data1 |= BIT(7); | |
344 | ||
345 | /* Configure Over-Current sens when self-powered */ | |
346 | hub->conf_data1 &= ~BIT(2); | |
347 | if (of_get_property(np, "ganged-sensing", NULL)) | |
348 | hub->conf_data1 &= ~BIT(1); | |
349 | else if (of_get_property(np, "individual-sensing", NULL)) | |
350 | hub->conf_data1 |= BIT(1); | |
351 | } else if (of_get_property(np, "bus-powered", NULL)) { | |
352 | hub->conf_data1 &= ~BIT(7); | |
353 | ||
354 | /* Disable Over-Current sense when bus-powered */ | |
355 | hub->conf_data1 |= BIT(2); | |
356 | } | |
357 | ||
358 | if (of_get_property(np, "disable-hi-speed", NULL)) | |
359 | hub->conf_data1 |= BIT(5); | |
360 | ||
361 | if (of_get_property(np, "multi-tt", NULL)) | |
362 | hub->conf_data1 |= BIT(4); | |
363 | else if (of_get_property(np, "single-tt", NULL)) | |
364 | hub->conf_data1 &= ~BIT(4); | |
365 | ||
366 | if (of_get_property(np, "disable-eop", NULL)) | |
367 | hub->conf_data1 |= BIT(3); | |
368 | ||
369 | if (of_get_property(np, "individual-port-switching", NULL)) | |
370 | hub->conf_data1 |= BIT(0); | |
371 | else if (of_get_property(np, "ganged-port-switching", NULL)) | |
372 | hub->conf_data1 &= ~BIT(0); | |
373 | ||
374 | hub->conf_data2 = USB251XB_DEF_CONFIG_DATA_2; | |
375 | if (of_get_property(np, "dynamic-power-switching", NULL)) | |
376 | hub->conf_data2 |= BIT(7); | |
377 | ||
7f7d8ba3 RL |
378 | if (!of_property_read_u32(np, "oc-delay-us", property_u32)) { |
379 | if (*property_u32 == 100) { | |
380 | /* 100 us*/ | |
381 | hub->conf_data2 &= ~BIT(5); | |
382 | hub->conf_data2 &= ~BIT(4); | |
383 | } else if (*property_u32 == 4000) { | |
384 | /* 4 ms */ | |
385 | hub->conf_data2 &= ~BIT(5); | |
386 | hub->conf_data2 |= BIT(4); | |
387 | } else if (*property_u32 == 16000) { | |
388 | /* 16 ms */ | |
389 | hub->conf_data2 |= BIT(5); | |
390 | hub->conf_data2 |= BIT(4); | |
391 | } else { | |
392 | /* 8 ms (DEFAULT) */ | |
393 | hub->conf_data2 |= BIT(5); | |
394 | hub->conf_data2 &= ~BIT(4); | |
395 | } | |
3ec72a2a RL |
396 | } |
397 | ||
398 | if (of_get_property(np, "compound-device", NULL)) | |
399 | hub->conf_data2 |= BIT(3); | |
400 | ||
401 | hub->conf_data3 = USB251XB_DEF_CONFIG_DATA_3; | |
402 | if (of_get_property(np, "port-mapping-mode", NULL)) | |
403 | hub->conf_data3 |= BIT(3); | |
404 | ||
405 | if (of_get_property(np, "string-support", NULL)) | |
406 | hub->conf_data3 |= BIT(0); | |
407 | ||
408 | hub->non_rem_dev = USB251XB_DEF_NON_REMOVABLE_DEVICES; | |
409 | cproperty_u32 = of_get_property(np, "non-removable-ports", &len); | |
410 | if (cproperty_u32 && (len / sizeof(u32)) > 0) { | |
411 | for (i = 0; i < len / sizeof(u32); i++) { | |
412 | u32 port = be32_to_cpu(cproperty_u32[i]); | |
413 | ||
414 | if ((port >= 1) && (port <= 4)) | |
415 | hub->non_rem_dev |= BIT(port); | |
416 | } | |
417 | } | |
418 | ||
419 | hub->port_disable_sp = USB251XB_DEF_PORT_DISABLE_SELF; | |
420 | cproperty_u32 = of_get_property(np, "sp-disabled-ports", &len); | |
421 | if (cproperty_u32 && (len / sizeof(u32)) > 0) { | |
422 | for (i = 0; i < len / sizeof(u32); i++) { | |
423 | u32 port = be32_to_cpu(cproperty_u32[i]); | |
424 | ||
425 | if ((port >= 1) && (port <= 4)) | |
426 | hub->port_disable_sp |= BIT(port); | |
427 | } | |
428 | } | |
429 | ||
430 | hub->port_disable_bp = USB251XB_DEF_PORT_DISABLE_BUS; | |
431 | cproperty_u32 = of_get_property(np, "bp-disabled-ports", &len); | |
432 | if (cproperty_u32 && (len / sizeof(u32)) > 0) { | |
433 | for (i = 0; i < len / sizeof(u32); i++) { | |
434 | u32 port = be32_to_cpu(cproperty_u32[i]); | |
435 | ||
436 | if ((port >= 1) && (port <= 4)) | |
437 | hub->port_disable_bp |= BIT(port); | |
438 | } | |
439 | } | |
440 | ||
3ec72a2a | 441 | hub->power_on_time = USB251XB_DEF_POWER_ON_TIME; |
7f7d8ba3 RL |
442 | if (!of_property_read_u32(np, "power-on-time-ms", property_u32)) |
443 | hub->power_on_time = min_t(u8, *property_u32 / 2, 255); | |
3ec72a2a RL |
444 | |
445 | if (of_property_read_u16_array(np, "language-id", &hub->lang_id, 1)) | |
446 | hub->lang_id = USB251XB_DEF_LANGUAGE_ID; | |
447 | ||
448 | cproperty_char = of_get_property(np, "manufacturer", NULL); | |
449 | strlcpy(str, cproperty_char ? : USB251XB_DEF_MANUFACTURER_STRING, | |
450 | sizeof(str)); | |
451 | hub->manufacturer_len = strlen(str) & 0xFF; | |
452 | memset(hub->manufacturer, 0, USB251XB_STRING_BUFSIZE); | |
453 | len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str)); | |
454 | len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN, | |
455 | (wchar_t *)hub->manufacturer, | |
456 | USB251XB_STRING_BUFSIZE); | |
457 | ||
458 | cproperty_char = of_get_property(np, "product", NULL); | |
459 | strlcpy(str, cproperty_char ? : data->product_str, sizeof(str)); | |
460 | hub->product_len = strlen(str) & 0xFF; | |
461 | memset(hub->product, 0, USB251XB_STRING_BUFSIZE); | |
462 | len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str)); | |
463 | len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN, | |
464 | (wchar_t *)hub->product, | |
465 | USB251XB_STRING_BUFSIZE); | |
466 | ||
467 | cproperty_char = of_get_property(np, "serial", NULL); | |
468 | strlcpy(str, cproperty_char ? : USB251XB_DEF_SERIAL_STRING, | |
469 | sizeof(str)); | |
470 | hub->serial_len = strlen(str) & 0xFF; | |
471 | memset(hub->serial, 0, USB251XB_STRING_BUFSIZE); | |
472 | len = min_t(size_t, USB251XB_STRING_BUFSIZE / 2, strlen(str)); | |
473 | len = utf8s_to_utf16s(str, len, UTF16_LITTLE_ENDIAN, | |
474 | (wchar_t *)hub->serial, | |
475 | USB251XB_STRING_BUFSIZE); | |
476 | ||
477 | /* The following parameters are currently not exposed to devicetree, but | |
478 | * may be as soon as needed. | |
479 | */ | |
cfa47afe RL |
480 | hub->max_power_sp = USB251XB_DEF_MAX_POWER_SELF; |
481 | hub->max_power_bp = USB251XB_DEF_MAX_POWER_BUS; | |
482 | hub->max_current_sp = USB251XB_DEF_MAX_CURRENT_SELF; | |
483 | hub->max_current_bp = USB251XB_DEF_MAX_CURRENT_BUS; | |
3ec72a2a RL |
484 | hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE; |
485 | hub->boost_up = USB251XB_DEF_BOOST_UP; | |
486 | hub->boost_x = USB251XB_DEF_BOOST_X; | |
487 | hub->port_swap = USB251XB_DEF_PORT_SWAP; | |
488 | hub->port_map12 = USB251XB_DEF_PORT_MAP_12; | |
489 | hub->port_map34 = USB251XB_DEF_PORT_MAP_34; | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
494 | static const struct of_device_id usb251xb_of_match[] = { | |
495 | { | |
496 | .compatible = "microchip,usb2512b", | |
497 | .data = &usb2512b_data, | |
498 | }, { | |
499 | .compatible = "microchip,usb2512bi", | |
500 | .data = &usb2512bi_data, | |
501 | }, { | |
502 | .compatible = "microchip,usb2513b", | |
503 | .data = &usb2513b_data, | |
504 | }, { | |
505 | .compatible = "microchip,usb2513bi", | |
506 | .data = &usb2513bi_data, | |
507 | }, { | |
508 | .compatible = "microchip,usb2514b", | |
509 | .data = &usb2514b_data, | |
510 | }, { | |
511 | .compatible = "microchip,usb2514bi", | |
512 | .data = &usb2514bi_data, | |
513 | }, { | |
514 | /* sentinel */ | |
515 | } | |
516 | }; | |
517 | MODULE_DEVICE_TABLE(of, usb251xb_of_match); | |
518 | #else /* CONFIG_OF */ | |
519 | static int usb251xb_get_ofdata(struct usb251xb *hub, | |
520 | struct usb251xb_data *data) | |
521 | { | |
522 | return 0; | |
523 | } | |
524 | #endif /* CONFIG_OF */ | |
525 | ||
526 | static int usb251xb_probe(struct usb251xb *hub) | |
527 | { | |
528 | struct device *dev = hub->dev; | |
529 | struct device_node *np = dev->of_node; | |
530 | const struct of_device_id *of_id = of_match_device(usb251xb_of_match, | |
531 | dev); | |
532 | int err; | |
533 | ||
534 | if (np) { | |
535 | err = usb251xb_get_ofdata(hub, | |
536 | (struct usb251xb_data *)of_id->data); | |
537 | if (err) { | |
538 | dev_err(dev, "failed to get ofdata: %d\n", err); | |
539 | return err; | |
540 | } | |
541 | } | |
542 | ||
543 | err = usb251xb_connect(hub); | |
544 | if (err) { | |
545 | dev_err(dev, "Failed to connect hub (%d)\n", err); | |
546 | return err; | |
547 | } | |
548 | ||
549 | dev_info(dev, "Hub probed successfully\n"); | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
554 | static int usb251xb_i2c_probe(struct i2c_client *i2c, | |
555 | const struct i2c_device_id *id) | |
556 | { | |
557 | struct usb251xb *hub; | |
558 | ||
559 | hub = devm_kzalloc(&i2c->dev, sizeof(struct usb251xb), GFP_KERNEL); | |
560 | if (!hub) | |
561 | return -ENOMEM; | |
562 | ||
563 | i2c_set_clientdata(i2c, hub); | |
564 | hub->dev = &i2c->dev; | |
565 | hub->i2c = i2c; | |
566 | ||
567 | return usb251xb_probe(hub); | |
568 | } | |
569 | ||
570 | static const struct i2c_device_id usb251xb_id[] = { | |
571 | { "usb2512b", 0 }, | |
572 | { "usb2512bi", 0 }, | |
573 | { "usb2513b", 0 }, | |
574 | { "usb2513bi", 0 }, | |
575 | { "usb2514b", 0 }, | |
576 | { "usb2514bi", 0 }, | |
577 | { /* sentinel */ } | |
578 | }; | |
579 | MODULE_DEVICE_TABLE(i2c, usb251xb_id); | |
580 | ||
581 | static struct i2c_driver usb251xb_i2c_driver = { | |
582 | .driver = { | |
583 | .name = DRIVER_NAME, | |
584 | .of_match_table = of_match_ptr(usb251xb_of_match), | |
585 | }, | |
586 | .probe = usb251xb_i2c_probe, | |
587 | .id_table = usb251xb_id, | |
588 | }; | |
589 | ||
590 | module_i2c_driver(usb251xb_i2c_driver); | |
591 | ||
592 | MODULE_AUTHOR("Richard Leitner <richard.leitner@skidata.com>"); | |
593 | MODULE_DESCRIPTION("USB251xB/xBi USB 2.0 Hub Controller Driver"); | |
594 | MODULE_LICENSE("GPL"); |