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1/*
2 * LEDs driver for Freescale MC13783
3 *
4 * Copyright (C) 2010 Philippe Rétornaz
5 *
6 * Based on leds-da903x:
7 * Copyright (C) 2008 Compulab, Ltd.
8 * Mike Rapoport <mike@compulab.co.il>
9 *
10 * Copyright (C) 2006-2008 Marvell International Ltd.
11 * Eric Miao <eric.miao@marvell.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 */
17
18#include <linux/module.h>
19#include <linux/kernel.h>
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/leds.h>
23#include <linux/workqueue.h>
24#include <linux/mfd/mc13783.h>
25#include <linux/slab.h>
26
27struct mc13783_led {
28 struct led_classdev cdev;
29 struct work_struct work;
30 struct mc13783 *master;
31 enum led_brightness new_brightness;
32 int id;
33};
34
35#define MC13783_REG_LED_CONTROL_0 51
36#define MC13783_LED_C0_ENABLE_BIT (1 << 0)
37#define MC13783_LED_C0_TRIODE_MD_BIT (1 << 7)
38#define MC13783_LED_C0_TRIODE_AD_BIT (1 << 8)
39#define MC13783_LED_C0_TRIODE_KP_BIT (1 << 9)
40#define MC13783_LED_C0_BOOST_BIT (1 << 10)
41#define MC13783_LED_C0_ABMODE_MASK 0x7
42#define MC13783_LED_C0_ABMODE 11
43#define MC13783_LED_C0_ABREF_MASK 0x3
44#define MC13783_LED_C0_ABREF 14
45
46#define MC13783_REG_LED_CONTROL_1 52
47#define MC13783_LED_C1_TC1HALF_BIT (1 << 18)
48
49#define MC13783_REG_LED_CONTROL_2 53
50#define MC13783_LED_C2_BL_P_MASK 0xf
51#define MC13783_LED_C2_MD_P 9
52#define MC13783_LED_C2_AD_P 13
53#define MC13783_LED_C2_KP_P 17
54#define MC13783_LED_C2_BL_C_MASK 0x7
55#define MC13783_LED_C2_MD_C 0
56#define MC13783_LED_C2_AD_C 3
57#define MC13783_LED_C2_KP_C 6
58
59#define MC13783_REG_LED_CONTROL_3 54
60#define MC13783_LED_C3_TC_P 6
61#define MC13783_LED_C3_TC_P_MASK 0x1f
62
63#define MC13783_REG_LED_CONTROL_4 55
64#define MC13783_REG_LED_CONTROL_5 56
65
66#define MC13783_LED_Cx_PERIOD 21
67#define MC13783_LED_Cx_PERIOD_MASK 0x3
68#define MC13783_LED_Cx_SLEWLIM_BIT (1 << 23)
69#define MC13783_LED_Cx_TRIODE_TC_BIT (1 << 23)
70#define MC13783_LED_Cx_TC_C_MASK 0x3
71
72static void mc13783_led_work(struct work_struct *work)
73{
74 struct mc13783_led *led = container_of(work, struct mc13783_led, work);
75 int reg = 0;
76 int mask = 0;
77 int value = 0;
78 int bank, off, shift;
79
80 switch (led->id) {
81 case MC13783_LED_MD:
82 reg = MC13783_REG_LED_CONTROL_2;
83 mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_MD_P;
84 value = (led->new_brightness >> 4) << MC13783_LED_C2_MD_P;
85 break;
86 case MC13783_LED_AD:
87 reg = MC13783_REG_LED_CONTROL_2;
88 mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_AD_P;
89 value = (led->new_brightness >> 4) << MC13783_LED_C2_AD_P;
90 break;
91 case MC13783_LED_KP:
92 reg = MC13783_REG_LED_CONTROL_2;
93 mask = MC13783_LED_C2_BL_P_MASK << MC13783_LED_C2_KP_P;
94 value = (led->new_brightness >> 4) << MC13783_LED_C2_KP_P;
95 break;
96 case MC13783_LED_R1:
97 case MC13783_LED_G1:
98 case MC13783_LED_B1:
99 case MC13783_LED_R2:
100 case MC13783_LED_G2:
101 case MC13783_LED_B2:
102 case MC13783_LED_R3:
103 case MC13783_LED_G3:
104 case MC13783_LED_B3:
105 off = led->id - MC13783_LED_R1;
106 bank = off/3;
107 reg = MC13783_REG_LED_CONTROL_3 + off/3;
108 shift = (off - bank * 3) * 5 + MC13783_LED_C3_TC_P;
109 value = (led->new_brightness >> 3) << shift;
110 mask = MC13783_LED_C3_TC_P_MASK << shift;
111 break;
112 }
113
114 mc13783_lock(led->master);
115
116 mc13783_reg_rmw(led->master, reg, mask, value);
117
118 mc13783_unlock(led->master);
119}
120
121static void mc13783_led_set(struct led_classdev *led_cdev,
122 enum led_brightness value)
123{
124 struct mc13783_led *led;
125
126 led = container_of(led_cdev, struct mc13783_led, cdev);
127 led->new_brightness = value;
128 schedule_work(&led->work);
129}
130
131static int __devinit mc13783_led_setup(struct mc13783_led *led, int max_current)
132{
133 int shift = 0;
134 int mask = 0;
135 int value = 0;
136 int reg = 0;
137 int ret, bank;
138
139 switch (led->id) {
140 case MC13783_LED_MD:
141 shift = MC13783_LED_C2_MD_C;
142 mask = MC13783_LED_C2_BL_C_MASK;
143 value = max_current & MC13783_LED_C2_BL_C_MASK;
144 reg = MC13783_REG_LED_CONTROL_2;
145 break;
146 case MC13783_LED_AD:
147 shift = MC13783_LED_C2_AD_C;
148 mask = MC13783_LED_C2_BL_C_MASK;
149 value = max_current & MC13783_LED_C2_BL_C_MASK;
150 reg = MC13783_REG_LED_CONTROL_2;
151 break;
152 case MC13783_LED_KP:
153 shift = MC13783_LED_C2_KP_C;
154 mask = MC13783_LED_C2_BL_C_MASK;
155 value = max_current & MC13783_LED_C2_BL_C_MASK;
156 reg = MC13783_REG_LED_CONTROL_2;
157 break;
158 case MC13783_LED_R1:
159 case MC13783_LED_G1:
160 case MC13783_LED_B1:
161 case MC13783_LED_R2:
162 case MC13783_LED_G2:
163 case MC13783_LED_B2:
164 case MC13783_LED_R3:
165 case MC13783_LED_G3:
166 case MC13783_LED_B3:
167 bank = (led->id - MC13783_LED_R1)/3;
168 reg = MC13783_REG_LED_CONTROL_3 + bank;
169 shift = ((led->id - MC13783_LED_R1) - bank * 3) * 2;
170 mask = MC13783_LED_Cx_TC_C_MASK;
171 value = max_current & MC13783_LED_Cx_TC_C_MASK;
172 break;
173 }
174
175 mc13783_lock(led->master);
176
177 ret = mc13783_reg_rmw(led->master, reg, mask << shift,
178 value << shift);
179
180 mc13783_unlock(led->master);
181 return ret;
182}
183
184static int __devinit mc13783_leds_prepare(struct platform_device *pdev)
185{
186 struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
187 struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
188 int ret = 0;
189 int reg = 0;
190
191 mc13783_lock(dev);
192
193 if (pdata->flags & MC13783_LED_TC1HALF)
194 reg |= MC13783_LED_C1_TC1HALF_BIT;
195
196 if (pdata->flags & MC13783_LED_SLEWLIMTC)
197 reg |= MC13783_LED_Cx_SLEWLIM_BIT;
198
199 ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_1, reg);
200 if (ret)
201 goto out;
202
203 reg = (pdata->bl_period & MC13783_LED_Cx_PERIOD_MASK) <<
204 MC13783_LED_Cx_PERIOD;
205
206 if (pdata->flags & MC13783_LED_SLEWLIMBL)
207 reg |= MC13783_LED_Cx_SLEWLIM_BIT;
208
209 ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_2, reg);
210 if (ret)
211 goto out;
212
213 reg = (pdata->tc1_period & MC13783_LED_Cx_PERIOD_MASK) <<
214 MC13783_LED_Cx_PERIOD;
215
216 if (pdata->flags & MC13783_LED_TRIODE_TC1)
217 reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
218
219 ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_3, reg);
220 if (ret)
221 goto out;
222
223 reg = (pdata->tc2_period & MC13783_LED_Cx_PERIOD_MASK) <<
224 MC13783_LED_Cx_PERIOD;
225
226 if (pdata->flags & MC13783_LED_TRIODE_TC2)
227 reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
228
229 ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_4, reg);
230 if (ret)
231 goto out;
232
233 reg = (pdata->tc3_period & MC13783_LED_Cx_PERIOD_MASK) <<
234 MC13783_LED_Cx_PERIOD;
235
236 if (pdata->flags & MC13783_LED_TRIODE_TC3)
237 reg |= MC13783_LED_Cx_TRIODE_TC_BIT;
238
239 ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_5, reg);
240 if (ret)
241 goto out;
242
243 reg = MC13783_LED_C0_ENABLE_BIT;
244 if (pdata->flags & MC13783_LED_TRIODE_MD)
245 reg |= MC13783_LED_C0_TRIODE_MD_BIT;
246 if (pdata->flags & MC13783_LED_TRIODE_AD)
247 reg |= MC13783_LED_C0_TRIODE_AD_BIT;
248 if (pdata->flags & MC13783_LED_TRIODE_KP)
249 reg |= MC13783_LED_C0_TRIODE_KP_BIT;
250 if (pdata->flags & MC13783_LED_BOOST_EN)
251 reg |= MC13783_LED_C0_BOOST_BIT;
252
253 reg |= (pdata->abmode & MC13783_LED_C0_ABMODE_MASK) <<
254 MC13783_LED_C0_ABMODE;
255 reg |= (pdata->abref & MC13783_LED_C0_ABREF_MASK) <<
256 MC13783_LED_C0_ABREF;
257
258 ret = mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_0, reg);
259
260out:
261 mc13783_unlock(dev);
262 return ret;
263}
264
265static int __devinit mc13783_led_probe(struct platform_device *pdev)
266{
267 struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
268 struct mc13783_led_platform_data *led_cur;
269 struct mc13783_led *led, *led_dat;
270 int ret, i;
271 int init_led = 0;
272
273 if (pdata == NULL) {
274 dev_err(&pdev->dev, "missing platform data\n");
275 return -ENODEV;
276 }
277
278 if (pdata->num_leds < 1 || pdata->num_leds > MC13783_LED_MAX) {
279 dev_err(&pdev->dev, "Invalid led count %d\n", pdata->num_leds);
280 return -EINVAL;
281 }
282
283 led = kzalloc(sizeof(*led) * pdata->num_leds, GFP_KERNEL);
284 if (led == NULL) {
285 dev_err(&pdev->dev, "failed to alloc memory\n");
286 return -ENOMEM;
287 }
288
289 ret = mc13783_leds_prepare(pdev);
290 if (ret) {
291 dev_err(&pdev->dev, "unable to init led driver\n");
292 goto err_free;
293 }
294
295 for (i = 0; i < pdata->num_leds; i++) {
296 led_dat = &led[i];
297 led_cur = &pdata->led[i];
298
299 if (led_cur->id > MC13783_LED_MAX || led_cur->id < 0) {
300 dev_err(&pdev->dev, "invalid id %d\n", led_cur->id);
301 ret = -EINVAL;
302 goto err_register;
303 }
304
305 if (init_led & (1 << led_cur->id)) {
306 dev_err(&pdev->dev, "led %d already initialized\n",
307 led_cur->id);
308 ret = -EINVAL;
309 goto err_register;
310 }
311
312 init_led |= 1 << led_cur->id;
313 led_dat->cdev.name = led_cur->name;
314 led_dat->cdev.default_trigger = led_cur->default_trigger;
315 led_dat->cdev.brightness_set = mc13783_led_set;
316 led_dat->cdev.brightness = LED_OFF;
317 led_dat->id = led_cur->id;
318 led_dat->master = dev_get_drvdata(pdev->dev.parent);
319
320 INIT_WORK(&led_dat->work, mc13783_led_work);
321
322 ret = led_classdev_register(pdev->dev.parent, &led_dat->cdev);
323 if (ret) {
324 dev_err(&pdev->dev, "failed to register led %d\n",
325 led_dat->id);
326 goto err_register;
327 }
328
329 ret = mc13783_led_setup(led_dat, led_cur->max_current);
330 if (ret) {
331 dev_err(&pdev->dev, "unable to init led %d\n",
332 led_dat->id);
333 i++;
334 goto err_register;
335 }
336 }
337
338 platform_set_drvdata(pdev, led);
339 return 0;
340
341err_register:
342 for (i = i - 1; i >= 0; i--) {
343 led_classdev_unregister(&led[i].cdev);
344 cancel_work_sync(&led[i].work);
345 }
346
347err_free:
348 kfree(led);
349 return ret;
350}
351
352static int __devexit mc13783_led_remove(struct platform_device *pdev)
353{
354 struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
355 struct mc13783_led *led = platform_get_drvdata(pdev);
356 struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
357 int i;
358
359 for (i = 0; i < pdata->num_leds; i++) {
360 led_classdev_unregister(&led[i].cdev);
361 cancel_work_sync(&led[i].work);
362 }
363
364 mc13783_lock(dev);
365
366 mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_0, 0);
367 mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_1, 0);
368 mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_2, 0);
369 mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_3, 0);
370 mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_4, 0);
371 mc13783_reg_write(dev, MC13783_REG_LED_CONTROL_5, 0);
372
373 mc13783_unlock(dev);
374
375 kfree(led);
376 return 0;
377}
378
379static struct platform_driver mc13783_led_driver = {
380 .driver = {
381 .name = "mc13783-led",
382 .owner = THIS_MODULE,
383 },
384 .probe = mc13783_led_probe,
385 .remove = __devexit_p(mc13783_led_remove),
386};
387
388static int __init mc13783_led_init(void)
389{
390 return platform_driver_register(&mc13783_led_driver);
391}
392module_init(mc13783_led_init);
393
394static void __exit mc13783_led_exit(void)
395{
396 platform_driver_unregister(&mc13783_led_driver);
397}
398module_exit(mc13783_led_exit);
399
400MODULE_DESCRIPTION("LEDs driver for Freescale MC13783 PMIC");
401MODULE_AUTHOR("Philippe Retornaz <philippe.retornaz@epfl.ch>");
402MODULE_LICENSE("GPL");
403MODULE_ALIAS("platform:mc13783-led");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * LEDs driver for Freescale MC13783/MC13892/MC34708
4 *
5 * Copyright (C) 2010 Philippe Rétornaz
6 *
7 * Based on leds-da903x:
8 * Copyright (C) 2008 Compulab, Ltd.
9 * Mike Rapoport <mike@compulab.co.il>
10 *
11 * Copyright (C) 2006-2008 Marvell International Ltd.
12 * Eric Miao <eric.miao@marvell.com>
13 */
14
15#include <linux/module.h>
16#include <linux/kernel.h>
17#include <linux/platform_device.h>
18#include <linux/leds.h>
19#include <linux/of.h>
20#include <linux/mfd/mc13xxx.h>
21
22struct mc13xxx_led_devtype {
23 int led_min;
24 int led_max;
25 int num_regs;
26 u32 ledctrl_base;
27};
28
29struct mc13xxx_led {
30 struct led_classdev cdev;
31 int id;
32 struct mc13xxx_leds *leds;
33};
34
35struct mc13xxx_leds {
36 struct mc13xxx *master;
37 struct mc13xxx_led_devtype *devtype;
38 int num_leds;
39 struct mc13xxx_led *led;
40};
41
42static unsigned int mc13xxx_max_brightness(int id)
43{
44 if (id >= MC13783_LED_MD && id <= MC13783_LED_KP)
45 return 0x0f;
46 else if (id >= MC13783_LED_R1 && id <= MC13783_LED_B3)
47 return 0x1f;
48
49 return 0x3f;
50}
51
52static int mc13xxx_led_set(struct led_classdev *led_cdev,
53 enum led_brightness value)
54{
55 struct mc13xxx_led *led =
56 container_of(led_cdev, struct mc13xxx_led, cdev);
57 struct mc13xxx_leds *leds = led->leds;
58 unsigned int reg, bank, off, shift;
59
60 switch (led->id) {
61 case MC13783_LED_MD:
62 case MC13783_LED_AD:
63 case MC13783_LED_KP:
64 reg = 2;
65 shift = 9 + (led->id - MC13783_LED_MD) * 4;
66 break;
67 case MC13783_LED_R1:
68 case MC13783_LED_G1:
69 case MC13783_LED_B1:
70 case MC13783_LED_R2:
71 case MC13783_LED_G2:
72 case MC13783_LED_B2:
73 case MC13783_LED_R3:
74 case MC13783_LED_G3:
75 case MC13783_LED_B3:
76 off = led->id - MC13783_LED_R1;
77 bank = off / 3;
78 reg = 3 + bank;
79 shift = (off - bank * 3) * 5 + 6;
80 break;
81 case MC13892_LED_MD:
82 case MC13892_LED_AD:
83 case MC13892_LED_KP:
84 off = led->id - MC13892_LED_MD;
85 reg = off / 2;
86 shift = 3 + (off - reg * 2) * 12;
87 break;
88 case MC13892_LED_R:
89 case MC13892_LED_G:
90 case MC13892_LED_B:
91 off = led->id - MC13892_LED_R;
92 bank = off / 2;
93 reg = 2 + bank;
94 shift = (off - bank * 2) * 12 + 3;
95 break;
96 case MC34708_LED_R:
97 case MC34708_LED_G:
98 reg = 0;
99 shift = 3 + (led->id - MC34708_LED_R) * 12;
100 break;
101 default:
102 BUG();
103 }
104
105 return mc13xxx_reg_rmw(leds->master, leds->devtype->ledctrl_base + reg,
106 mc13xxx_max_brightness(led->id) << shift,
107 value << shift);
108}
109
110#ifdef CONFIG_OF
111static struct mc13xxx_leds_platform_data __init *mc13xxx_led_probe_dt(
112 struct platform_device *pdev)
113{
114 struct mc13xxx_leds *leds = platform_get_drvdata(pdev);
115 struct mc13xxx_leds_platform_data *pdata;
116 struct device_node *parent, *child;
117 struct device *dev = &pdev->dev;
118 int i = 0, ret = -ENODATA;
119
120 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
121 if (!pdata)
122 return ERR_PTR(-ENOMEM);
123
124 parent = of_get_child_by_name(dev->parent->of_node, "leds");
125 if (!parent)
126 goto out_node_put;
127
128 ret = of_property_read_u32_array(parent, "led-control",
129 pdata->led_control,
130 leds->devtype->num_regs);
131 if (ret)
132 goto out_node_put;
133
134 pdata->num_leds = of_get_child_count(parent);
135
136 pdata->led = devm_kcalloc(dev, pdata->num_leds, sizeof(*pdata->led),
137 GFP_KERNEL);
138 if (!pdata->led) {
139 ret = -ENOMEM;
140 goto out_node_put;
141 }
142
143 for_each_child_of_node(parent, child) {
144 const char *str;
145 u32 tmp;
146
147 if (of_property_read_u32(child, "reg", &tmp))
148 continue;
149 pdata->led[i].id = leds->devtype->led_min + tmp;
150
151 if (!of_property_read_string(child, "label", &str))
152 pdata->led[i].name = str;
153 if (!of_property_read_string(child, "linux,default-trigger",
154 &str))
155 pdata->led[i].default_trigger = str;
156
157 i++;
158 }
159
160 pdata->num_leds = i;
161 ret = i > 0 ? 0 : -ENODATA;
162
163out_node_put:
164 of_node_put(parent);
165
166 return ret ? ERR_PTR(ret) : pdata;
167}
168#else
169static inline struct mc13xxx_leds_platform_data __init *mc13xxx_led_probe_dt(
170 struct platform_device *pdev)
171{
172 return ERR_PTR(-ENOSYS);
173}
174#endif
175
176static int __init mc13xxx_led_probe(struct platform_device *pdev)
177{
178 struct device *dev = &pdev->dev;
179 struct mc13xxx_leds_platform_data *pdata = dev_get_platdata(dev);
180 struct mc13xxx *mcdev = dev_get_drvdata(dev->parent);
181 struct mc13xxx_led_devtype *devtype =
182 (struct mc13xxx_led_devtype *)pdev->id_entry->driver_data;
183 struct mc13xxx_leds *leds;
184 int i, id, ret = -ENODATA;
185 u32 init_led = 0;
186
187 leds = devm_kzalloc(dev, sizeof(*leds), GFP_KERNEL);
188 if (!leds)
189 return -ENOMEM;
190
191 leds->devtype = devtype;
192 leds->master = mcdev;
193 platform_set_drvdata(pdev, leds);
194
195 if (dev->parent->of_node) {
196 pdata = mc13xxx_led_probe_dt(pdev);
197 if (IS_ERR(pdata))
198 return PTR_ERR(pdata);
199 } else if (!pdata)
200 return -ENODATA;
201
202 leds->num_leds = pdata->num_leds;
203
204 if ((leds->num_leds < 1) ||
205 (leds->num_leds > (devtype->led_max - devtype->led_min + 1))) {
206 dev_err(dev, "Invalid LED count %d\n", leds->num_leds);
207 return -EINVAL;
208 }
209
210 leds->led = devm_kcalloc(dev, leds->num_leds, sizeof(*leds->led),
211 GFP_KERNEL);
212 if (!leds->led)
213 return -ENOMEM;
214
215 for (i = 0; i < devtype->num_regs; i++) {
216 ret = mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i,
217 pdata->led_control[i]);
218 if (ret)
219 return ret;
220 }
221
222 for (i = 0; i < leds->num_leds; i++) {
223 const char *name, *trig;
224
225 ret = -EINVAL;
226
227 id = pdata->led[i].id;
228 name = pdata->led[i].name;
229 trig = pdata->led[i].default_trigger;
230
231 if ((id > devtype->led_max) || (id < devtype->led_min)) {
232 dev_err(dev, "Invalid ID %i\n", id);
233 break;
234 }
235
236 if (init_led & (1 << id)) {
237 dev_warn(dev, "LED %i already initialized\n", id);
238 break;
239 }
240
241 init_led |= 1 << id;
242 leds->led[i].id = id;
243 leds->led[i].leds = leds;
244 leds->led[i].cdev.name = name;
245 leds->led[i].cdev.default_trigger = trig;
246 leds->led[i].cdev.flags = LED_CORE_SUSPENDRESUME;
247 leds->led[i].cdev.brightness_set_blocking = mc13xxx_led_set;
248 leds->led[i].cdev.max_brightness = mc13xxx_max_brightness(id);
249
250 ret = led_classdev_register(dev->parent, &leds->led[i].cdev);
251 if (ret) {
252 dev_err(dev, "Failed to register LED %i\n", id);
253 break;
254 }
255 }
256
257 if (ret)
258 while (--i >= 0)
259 led_classdev_unregister(&leds->led[i].cdev);
260
261 return ret;
262}
263
264static int mc13xxx_led_remove(struct platform_device *pdev)
265{
266 struct mc13xxx_leds *leds = platform_get_drvdata(pdev);
267 int i;
268
269 for (i = 0; i < leds->num_leds; i++)
270 led_classdev_unregister(&leds->led[i].cdev);
271
272 return 0;
273}
274
275static const struct mc13xxx_led_devtype mc13783_led_devtype = {
276 .led_min = MC13783_LED_MD,
277 .led_max = MC13783_LED_B3,
278 .num_regs = 6,
279 .ledctrl_base = 51,
280};
281
282static const struct mc13xxx_led_devtype mc13892_led_devtype = {
283 .led_min = MC13892_LED_MD,
284 .led_max = MC13892_LED_B,
285 .num_regs = 4,
286 .ledctrl_base = 51,
287};
288
289static const struct mc13xxx_led_devtype mc34708_led_devtype = {
290 .led_min = MC34708_LED_R,
291 .led_max = MC34708_LED_G,
292 .num_regs = 1,
293 .ledctrl_base = 54,
294};
295
296static const struct platform_device_id mc13xxx_led_id_table[] = {
297 { "mc13783-led", (kernel_ulong_t)&mc13783_led_devtype, },
298 { "mc13892-led", (kernel_ulong_t)&mc13892_led_devtype, },
299 { "mc34708-led", (kernel_ulong_t)&mc34708_led_devtype, },
300 { }
301};
302MODULE_DEVICE_TABLE(platform, mc13xxx_led_id_table);
303
304static struct platform_driver mc13xxx_led_driver = {
305 .driver = {
306 .name = "mc13xxx-led",
307 },
308 .remove = mc13xxx_led_remove,
309 .id_table = mc13xxx_led_id_table,
310};
311module_platform_driver_probe(mc13xxx_led_driver, mc13xxx_led_probe);
312
313MODULE_DESCRIPTION("LEDs driver for Freescale MC13XXX PMIC");
314MODULE_AUTHOR("Philippe Retornaz <philippe.retornaz@epfl.ch>");
315MODULE_LICENSE("GPL");