/*
* Copyright (C) 2009 Francisco Jerez.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
#include "nouveau_crtc.h"
#include "nouveau_hw.h"
#include "drm_crtc_helper.h"
#include "i2c/ch7006.h"
static struct i2c_board_info nv04_tv_encoder_info[] = {
{
I2C_BOARD_INFO("ch7006", 0x75),
.platform_data = &(struct ch7006_encoder_params) {
CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
0, 0, 0,
CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
}
},
{ }
};
int nv04_tv_identify(struct drm_device *dev, int i2c_index)
{
return nouveau_i2c_identify(dev, "TV encoder", nv04_tv_encoder_info,
NULL, i2c_index);
}
#define PLLSEL_TV_CRTC1_MASK \
(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1 \
| NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
#define PLLSEL_TV_CRTC2_MASK \
(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2 \
| NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)
static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
{
struct drm_device *dev = encoder->dev;
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv04_mode_state *state = &dev_priv->mode_reg;
uint8_t crtc1A;
NV_INFO(dev, "Setting dpms mode %d on TV encoder (output %d)\n",
mode, nv_encoder->dcb->index);
state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);
if (mode == DRM_MODE_DPMS_ON) {
int head = nouveau_crtc(encoder->crtc)->index;
crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);
state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
PLLSEL_TV_CRTC1_MASK;
/* Inhibit hsync */
crtc1A |= 0x80;
NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
}
NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);
get_slave_funcs(encoder)->dpms(encoder, mode);
}
static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv04_crtc_reg *state = &dev_priv->mode_reg.crtc_reg[head];
state->tv_setup = 0;
if (bind)
state->CRTC[NV_CIO_CRE_49] |= 0x10;
else
state->CRTC[NV_CIO_CRE_49] &= ~0x10;
NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
state->CRTC[NV_CIO_CRE_LCD__INDEX]);
NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
state->CRTC[NV_CIO_CRE_49]);
NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
state->tv_setup);
}
static void nv04_tv_prepare(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
int head = nouveau_crtc(encoder->crtc)->index;
struct drm_encoder_helper_funcs *helper = encoder->helper_private;
helper->dpms(encoder, DRM_MODE_DPMS_OFF);
nv04_dfp_disable(dev, head);
if (nv_two_heads(dev))
nv04_tv_bind(dev, head ^ 1, false);
nv04_tv_bind(dev, head, true);
}
static void nv04_tv_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];
regp->tv_htotal = adjusted_mode->htotal;
regp->tv_vtotal = adjusted_mode->vtotal;
/* These delay the TV signals with respect to the VGA port,
* they might be useful if we ever allow a CRTC to drive
* multiple outputs.
*/
regp->tv_hskew = 1;
regp->tv_hsync_delay = 1;
regp->tv_hsync_delay2 = 64;
regp->tv_vskew = 1;
regp->tv_vsync_delay = 1;
get_slave_funcs(encoder)->mode_set(encoder, mode, adjusted_mode);
}
static void nv04_tv_commit(struct drm_encoder *encoder)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct drm_device *dev = encoder->dev;
struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
struct drm_encoder_helper_funcs *helper = encoder->helper_private;
helper->dpms(encoder, DRM_MODE_DPMS_ON);
NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index,
'@' + ffs(nv_encoder->dcb->or));
}
static void nv04_tv_destroy(struct drm_encoder *encoder)
{
get_slave_funcs(encoder)->destroy(encoder);
drm_encoder_cleanup(encoder);
kfree(encoder->helper_private);
kfree(nouveau_encoder(encoder));
}
static const struct drm_encoder_funcs nv04_tv_funcs = {
.destroy = nv04_tv_destroy,
};
int
nv04_tv_create(struct drm_connector *connector, struct dcb_entry *entry)
{
struct nouveau_encoder *nv_encoder;
struct drm_encoder *encoder;
struct drm_device *dev = connector->dev;
struct drm_encoder_helper_funcs *hfuncs;
struct drm_encoder_slave_funcs *sfuncs;
struct nouveau_i2c_chan *i2c =
nouveau_i2c_find(dev, entry->i2c_index);
int type, ret;
/* Ensure that we can talk to this encoder */
type = nv04_tv_identify(dev, entry->i2c_index);
if (type < 0)
return type;
/* Allocate the necessary memory */
nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
if (!nv_encoder)
return -ENOMEM;
hfuncs = kzalloc(sizeof(*hfuncs), GFP_KERNEL);
if (!hfuncs) {
ret = -ENOMEM;
goto fail_free;
}
/* Initialize the common members */
encoder = to_drm_encoder(nv_encoder);
drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC);
drm_encoder_helper_add(encoder, hfuncs);
encoder->possible_crtcs = entry->heads;
encoder->possible_clones = 0;
nv_encoder->dcb = entry;
nv_encoder->or = ffs(entry->or) - 1;
/* Run the slave-specific initialization */
ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
&i2c->adapter, &nv04_tv_encoder_info[type]);
if (ret < 0)
goto fail_cleanup;
/* Fill the function pointers */
sfuncs = get_slave_funcs(encoder);
*hfuncs = (struct drm_encoder_helper_funcs) {
.dpms = nv04_tv_dpms,
.save = sfuncs->save,
.restore = sfuncs->restore,
.mode_fixup = sfuncs->mode_fixup,
.prepare = nv04_tv_prepare,
.commit = nv04_tv_commit,
.mode_set = nv04_tv_mode_set,
.detect = sfuncs->detect,
};
/* Attach it to the specified connector. */
sfuncs->create_resources(encoder, connector);
drm_mode_connector_attach_encoder(connector, encoder);
return 0;
fail_cleanup:
drm_encoder_cleanup(encoder);
kfree(hfuncs);
fail_free:
kfree(nv_encoder);
return ret;
}
a>
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
/*
* Copyright(c) 2009 Dialog Semiconductor Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* da9052_bl.c: Backlight driver for DA9052
*/
#include <linux/platform_device.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>
#include <linux/mfd/da9052/bl.h>
#define DRIVER_NAME "da9052-backlight"
#define DRIVER_NAME1 "WLED-1"
#define DRIVER_NAME2 "WLED-2"
#define DRIVER_NAME3 "WLED-3"
/* These flags define if Backlight LEDs are present */
/* Set the following macros to 1, if LEDs are present. Otherwise set to 0 */
#define DA9052_LED1_PRESENT 1
#define DA9052_LED2_PRESENT 1
#define DA9052_LED3_PRESENT 1
#define DA9052_MAX_BRIGHTNESS 0xFF
struct da9052_backlight_data {
struct device *da9052_dev;
int current_brightness;
struct da9052 *da9052;
int is_led1_present;
int is_led2_present;
int is_led3_present;
};
enum da9052_led_number {
LED1 = 1,
LED2,
LED3,
};
static int da9052_backlight_brightness_set(struct da9052_backlight_data *data,
int brightness, enum da9052_led_number led)
{
/*
* Mechanism for brightness control:
* For brightness control, current is used.
* PWM feature is not used.
* To use PWM feature, a fixed value of current should be defined.
*/
int ret = 0;
unsigned int led_ramp_bit;
unsigned int led_current_register;
unsigned int led_current_sink_bit;
unsigned int led_boost_en_bit;
struct da9052_ssc_msg msg;
switch (led) {
case LED1:
led_ramp_bit = DA9052_LEDCONT_LED1RAMP;
led_current_register = DA9052_LED1CONF_REG;
led_current_sink_bit = DA9052_LEDCONT_LED1EN;
led_boost_en_bit = DA9052_BOOST_LED1INEN;
break;
case LED2:
led_ramp_bit = DA9052_LEDCONT_LED2RAMP;
led_current_register = DA9052_LED2CONF_REG;
led_current_sink_bit = DA9052_LEDCONT_LED2EN;
led_boost_en_bit = DA9052_BOOST_LED2INEN;
break;
case LED3:
led_ramp_bit = DA9052_LEDCONT_LED3RAMP;
led_current_register = DA9052_LED3CONF_REG;
led_current_sink_bit = DA9052_LEDCONT_LED3EN;
led_boost_en_bit = DA9052_BOOST_LED3INEN;
break;
default:
return -EIO;
}
/*
1. Configure the boost register
2. Configure the LED _CONT register
3. Configure the LEDx_CONF registers to the brightness value.
*/
msg.addr = DA9052_BOOST_REG;
msg.data = 0x3F;
if (brightness) {
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
if (ret) {
da9052_unlock(data->da9052);
return ret;
}
da9052_unlock(data->da9052);
}
msg.addr = DA9052_LEDCONT_REG;
msg.data = 0xFF;
if (brightness) {
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
if (ret) {
da9052_unlock(data->da9052);
return ret;
}
da9052_unlock(data->da9052);
}
msg.addr = led_current_register;
msg.data = 0;
/* Write to the DA9052 register */
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
if (ret) {
da9052_unlock(data->da9052);
return ret;
}
da9052_unlock(data->da9052);
msleep(20);
msg.data = brightness;
/* Write to the DA9052 register */
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
if (ret) {
da9052_unlock(data->da9052);
return ret;
}
da9052_unlock(data->da9052);
return 0;
}
static int da9052_backlight_set(struct backlight_device *bl, int brightness)
{
struct da9052_backlight_data *data = bl_get_data(bl);
int ret = 0;
/* Check for LED1 */
if (1 == data->is_led1_present) {
ret = da9052_backlight_brightness_set(data, brightness, LED1);
if (ret)
return ret;
}
/* Check for LED2 */
if (1 == data->is_led2_present) {
ret = da9052_backlight_brightness_set(data, brightness, LED2);
if (ret)
return ret;
}
/* Check for LED3 */
if (1 == data->is_led3_present) {
ret = da9052_backlight_brightness_set(data, brightness, LED3);
if (ret)
return ret;
}
data->current_brightness = brightness;
return 0;
}
static int da9052_init_WLED(struct da9052_backlight_data *data,
enum da9052_led_number led)
{
int ret = 0;
unsigned int led_current_register;
struct da9052_ssc_msg msg;
switch (led) {
case LED1:
led_current_register = DA9052_LED1CONF_REG;
break;
case LED2:
led_current_register = DA9052_LED2CONF_REG;
break;
case LED3:
led_current_register = DA9052_LED3CONF_REG;
break;
default:
return -EIO;
}
msg.addr = DA9052_BOOST_REG;
msg.data = 0x00;
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
if (ret) {
da9052_unlock(data->da9052);
return ret;
}
da9052_unlock(data->da9052);
msg.addr = DA9052_LEDCONT_REG;
msg.data = 0x00;
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
if (ret) {
da9052_unlock(data->da9052);
return ret;
}
da9052_unlock(data->da9052);
msg.addr = led_current_register;
msg.data = 0;
da9052_lock(data->da9052);
ret = data->da9052->write(data->da9052, &msg);
da9052_unlock(data->da9052);
return ret;
}
static int da9052_backlight_update_status(struct backlight_device *bl)
{
int brightness = bl->props.brightness;
if (bl->props.power != FB_BLANK_UNBLANK)
brightness = 0;
if (bl->props.fb_blank != FB_BLANK_UNBLANK)
brightness = 0;
return da9052_backlight_set(bl, brightness);
}
static int da9052_backlight_get_brightness(struct backlight_device *bl)
{
struct da9052_backlight_data *data = bl_get_data(bl);
return data->current_brightness;
}
struct backlight_ops da9052_backlight_ops = {
.update_status = da9052_backlight_update_status,
.get_brightness = da9052_backlight_get_brightness,
};
static int da9052_backlight_probe1(struct platform_device *pdev)
{
struct da9052_backlight_data *data;
struct backlight_device *bl;
int ret = 0;
struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent);
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
data->da9052_dev = pdev->dev.parent;
data->da9052 = da9052;
data->current_brightness = 0;
data->is_led1_present = DA9052_LED1_PRESENT;
/* Init the WLED-1 bank */
ret = da9052_init_WLED(data, LED1);
if (ret)
return ret;
bl = backlight_device_register(pdev->name, data->da9052_dev,
data, &da9052_backlight_ops);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
kfree(data);
return PTR_ERR(bl);
}
bl->props.max_brightness = DA9052_MAX_BRIGHTNESS;
bl->props.brightness = 0;
platform_set_drvdata(pdev, bl);
backlight_update_status(bl);
return 0;
}
static int da9052_backlight_probe2(struct platform_device *pdev)
{
struct da9052_backlight_data *data;
struct backlight_device *bl;
struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent);
int ret = 0;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
data->da9052_dev = pdev->dev.parent;
data->da9052 = da9052;
data->current_brightness = 0;
data->is_led2_present = DA9052_LED2_PRESENT;
/* Init the WLED-2 bank */
ret = da9052_init_WLED(data, LED2);
if (ret)
return ret;
bl = backlight_device_register(pdev->name, data->da9052_dev,
data, &da9052_backlight_ops);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
kfree(data);
return PTR_ERR(bl);
}
bl->props.max_brightness = DA9052_MAX_BRIGHTNESS;
bl->props.brightness = 0;
platform_set_drvdata(pdev, bl);
backlight_update_status(bl);
return 0;
}
static int da9052_backlight_probe3(struct platform_device *pdev)
{
struct da9052_backlight_data *data;
struct backlight_device *bl;
struct da9052 *da9052 = dev_get_drvdata(pdev->dev.parent);
int ret = 0;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
data->da9052_dev = pdev->dev.parent;
data->da9052 = da9052;
data->current_brightness = 0;
data->is_led3_present = DA9052_LED3_PRESENT;
/* Init the WLED-2 bank */
ret = da9052_init_WLED(data, LED3);
if (ret)
return ret;
bl = backlight_device_register(pdev->name, data->da9052_dev,
data, &da9052_backlight_ops);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
kfree(data);
return PTR_ERR(bl);
}
bl->props.max_brightness = DA9052_MAX_BRIGHTNESS;
bl->props.brightness = 0;
platform_set_drvdata(pdev, bl);
backlight_update_status(bl);
return 0;
}
static int da9052_backlight_remove1(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
struct da9052_backlight_data *data = bl_get_data(bl);
int ret = 0;
/* Switch off the WLED-1 */
ret = da9052_init_WLED(data, LED1);
if (ret)
return ret;
backlight_device_unregister(bl);
kfree(data);
return 0;
}
static int da9052_backlight_remove2(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
struct da9052_backlight_data *data = bl_get_data(bl);
int ret = 0;
/* Switch off the WLED-2 */
ret = da9052_init_WLED(data, LED2);
if (ret)
return ret;
backlight_device_unregister(bl);
kfree(data);
return 0;
}
static int da9052_backlight_remove3(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
struct da9052_backlight_data *data = bl_get_data(bl);
int ret;
/* Switch off the WLED-3 */
ret = da9052_init_WLED(data, LED3);
if (ret)
return ret;
backlight_device_unregister(bl);
kfree(data);
return 0;
}
static struct platform_driver da9052_backlight_driver1 = {
.driver = {
.name = DRIVER_NAME1,
.owner = THIS_MODULE,
},
.probe = da9052_backlight_probe1,
.remove = da9052_backlight_remove1,
};
static struct platform_driver da9052_backlight_driver2 = {
.driver = {
.name = DRIVER_NAME2,
.owner = THIS_MODULE,
},
.probe = da9052_backlight_probe2,
.remove = da9052_backlight_remove2,
};
static struct platform_driver da9052_backlight_driver3 = {
.driver = {
.name = DRIVER_NAME3,
.owner = THIS_MODULE,
},
.probe = da9052_backlight_probe3,
.remove = da9052_backlight_remove3,
};
static int __init da9052_backlight_init(void)
{
s32 ret;
ret = platform_driver_register(&da9052_backlight_driver1);
if (ret)
return ret;
ret = platform_driver_register(&da9052_backlight_driver2);
if (ret)
return ret;
ret = platform_driver_register(&da9052_backlight_driver3);
if (ret)
return ret;
return ret;
}
module_init(da9052_backlight_init);
static void __exit da9052_backlight_exit(void)
{
platform_driver_unregister(&da9052_backlight_driver1);
platform_driver_unregister(&da9052_backlight_driver2);
platform_driver_unregister(&da9052_backlight_driver3);
}
module_exit(da9052_backlight_exit);
MODULE_AUTHOR("Dialog Semiconductor Ltd <dchen@diasemi.com>");
MODULE_DESCRIPTION("Backlight driver for Dialog DA9052 PMIC");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRIVER_NAME);
|