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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f76ee892 TV |
2 | /* |
3 | * TPO TD043MTEA1 Panel driver | |
4 | * | |
5 | * Author: Gražvydas Ignotas <notasas@gmail.com> | |
6 | * Converted to new DSS device model: Tomi Valkeinen <tomi.valkeinen@ti.com> | |
f76ee892 TV |
7 | */ |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/delay.h> | |
11 | #include <linux/spi/spi.h> | |
12 | #include <linux/regulator/consumer.h> | |
13 | #include <linux/gpio.h> | |
14 | #include <linux/err.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/of_gpio.h> | |
17 | ||
62d9e44e | 18 | #include <video/omapfb_dss.h> |
f76ee892 TV |
19 | |
20 | #define TPO_R02_MODE(x) ((x) & 7) | |
21 | #define TPO_R02_MODE_800x480 7 | |
22 | #define TPO_R02_NCLK_RISING BIT(3) | |
23 | #define TPO_R02_HSYNC_HIGH BIT(4) | |
24 | #define TPO_R02_VSYNC_HIGH BIT(5) | |
25 | ||
26 | #define TPO_R03_NSTANDBY BIT(0) | |
27 | #define TPO_R03_EN_CP_CLK BIT(1) | |
28 | #define TPO_R03_EN_VGL_PUMP BIT(2) | |
29 | #define TPO_R03_EN_PWM BIT(3) | |
30 | #define TPO_R03_DRIVING_CAP_100 BIT(4) | |
31 | #define TPO_R03_EN_PRE_CHARGE BIT(6) | |
32 | #define TPO_R03_SOFTWARE_CTL BIT(7) | |
33 | ||
34 | #define TPO_R04_NFLIP_H BIT(0) | |
35 | #define TPO_R04_NFLIP_V BIT(1) | |
36 | #define TPO_R04_CP_CLK_FREQ_1H BIT(2) | |
37 | #define TPO_R04_VGL_FREQ_1H BIT(4) | |
38 | ||
39 | #define TPO_R03_VAL_NORMAL (TPO_R03_NSTANDBY | TPO_R03_EN_CP_CLK | \ | |
40 | TPO_R03_EN_VGL_PUMP | TPO_R03_EN_PWM | \ | |
41 | TPO_R03_DRIVING_CAP_100 | TPO_R03_EN_PRE_CHARGE | \ | |
42 | TPO_R03_SOFTWARE_CTL) | |
43 | ||
44 | #define TPO_R03_VAL_STANDBY (TPO_R03_DRIVING_CAP_100 | \ | |
45 | TPO_R03_EN_PRE_CHARGE | TPO_R03_SOFTWARE_CTL) | |
46 | ||
47 | static const u16 tpo_td043_def_gamma[12] = { | |
48 | 105, 315, 381, 431, 490, 537, 579, 686, 780, 837, 880, 1023 | |
49 | }; | |
50 | ||
51 | struct panel_drv_data { | |
52 | struct omap_dss_device dssdev; | |
53 | struct omap_dss_device *in; | |
54 | ||
55 | struct omap_video_timings videomode; | |
56 | ||
57 | int data_lines; | |
58 | ||
59 | struct spi_device *spi; | |
60 | struct regulator *vcc_reg; | |
61 | int nreset_gpio; | |
62 | u16 gamma[12]; | |
63 | u32 mode; | |
64 | u32 hmirror:1; | |
65 | u32 vmirror:1; | |
66 | u32 powered_on:1; | |
67 | u32 spi_suspended:1; | |
68 | u32 power_on_resume:1; | |
69 | }; | |
70 | ||
71 | static const struct omap_video_timings tpo_td043_timings = { | |
72 | .x_res = 800, | |
73 | .y_res = 480, | |
74 | ||
75 | .pixelclock = 36000000, | |
76 | ||
77 | .hsw = 1, | |
78 | .hfp = 68, | |
79 | .hbp = 214, | |
80 | ||
81 | .vsw = 1, | |
82 | .vfp = 39, | |
83 | .vbp = 34, | |
84 | ||
85 | .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, | |
86 | .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, | |
87 | .data_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, | |
88 | .de_level = OMAPDSS_SIG_ACTIVE_HIGH, | |
89 | .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, | |
90 | }; | |
91 | ||
92 | #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) | |
93 | ||
94 | static int tpo_td043_write(struct spi_device *spi, u8 addr, u8 data) | |
95 | { | |
96 | struct spi_message m; | |
97 | struct spi_transfer xfer; | |
98 | u16 w; | |
99 | int r; | |
100 | ||
101 | spi_message_init(&m); | |
102 | ||
103 | memset(&xfer, 0, sizeof(xfer)); | |
104 | ||
105 | w = ((u16)addr << 10) | (1 << 8) | data; | |
106 | xfer.tx_buf = &w; | |
107 | xfer.bits_per_word = 16; | |
108 | xfer.len = 2; | |
109 | spi_message_add_tail(&xfer, &m); | |
110 | ||
111 | r = spi_sync(spi, &m); | |
112 | if (r < 0) | |
113 | dev_warn(&spi->dev, "failed to write to LCD reg (%d)\n", r); | |
114 | return r; | |
115 | } | |
116 | ||
117 | static void tpo_td043_write_gamma(struct spi_device *spi, u16 gamma[12]) | |
118 | { | |
119 | u8 i, val; | |
120 | ||
121 | /* gamma bits [9:8] */ | |
122 | for (val = i = 0; i < 4; i++) | |
123 | val |= (gamma[i] & 0x300) >> ((i + 1) * 2); | |
124 | tpo_td043_write(spi, 0x11, val); | |
125 | ||
126 | for (val = i = 0; i < 4; i++) | |
127 | val |= (gamma[i+4] & 0x300) >> ((i + 1) * 2); | |
128 | tpo_td043_write(spi, 0x12, val); | |
129 | ||
130 | for (val = i = 0; i < 4; i++) | |
131 | val |= (gamma[i+8] & 0x300) >> ((i + 1) * 2); | |
132 | tpo_td043_write(spi, 0x13, val); | |
133 | ||
134 | /* gamma bits [7:0] */ | |
135 | for (val = i = 0; i < 12; i++) | |
136 | tpo_td043_write(spi, 0x14 + i, gamma[i] & 0xff); | |
137 | } | |
138 | ||
139 | static int tpo_td043_write_mirror(struct spi_device *spi, bool h, bool v) | |
140 | { | |
141 | u8 reg4 = TPO_R04_NFLIP_H | TPO_R04_NFLIP_V | | |
142 | TPO_R04_CP_CLK_FREQ_1H | TPO_R04_VGL_FREQ_1H; | |
143 | if (h) | |
144 | reg4 &= ~TPO_R04_NFLIP_H; | |
145 | if (v) | |
146 | reg4 &= ~TPO_R04_NFLIP_V; | |
147 | ||
148 | return tpo_td043_write(spi, 4, reg4); | |
149 | } | |
150 | ||
151 | static int tpo_td043_set_hmirror(struct omap_dss_device *dssdev, bool enable) | |
152 | { | |
153 | struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev); | |
154 | ||
155 | ddata->hmirror = enable; | |
156 | return tpo_td043_write_mirror(ddata->spi, ddata->hmirror, | |
157 | ddata->vmirror); | |
158 | } | |
159 | ||
160 | static bool tpo_td043_get_hmirror(struct omap_dss_device *dssdev) | |
161 | { | |
162 | struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev); | |
163 | ||
164 | return ddata->hmirror; | |
165 | } | |
166 | ||
167 | static ssize_t tpo_td043_vmirror_show(struct device *dev, | |
168 | struct device_attribute *attr, char *buf) | |
169 | { | |
170 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
171 | ||
172 | return snprintf(buf, PAGE_SIZE, "%d\n", ddata->vmirror); | |
173 | } | |
174 | ||
175 | static ssize_t tpo_td043_vmirror_store(struct device *dev, | |
176 | struct device_attribute *attr, const char *buf, size_t count) | |
177 | { | |
178 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
179 | int val; | |
180 | int ret; | |
181 | ||
182 | ret = kstrtoint(buf, 0, &val); | |
183 | if (ret < 0) | |
184 | return ret; | |
185 | ||
186 | val = !!val; | |
187 | ||
188 | ret = tpo_td043_write_mirror(ddata->spi, ddata->hmirror, val); | |
189 | if (ret < 0) | |
190 | return ret; | |
191 | ||
192 | ddata->vmirror = val; | |
193 | ||
194 | return count; | |
195 | } | |
196 | ||
197 | static ssize_t tpo_td043_mode_show(struct device *dev, | |
198 | struct device_attribute *attr, char *buf) | |
199 | { | |
200 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
201 | ||
202 | return snprintf(buf, PAGE_SIZE, "%d\n", ddata->mode); | |
203 | } | |
204 | ||
205 | static ssize_t tpo_td043_mode_store(struct device *dev, | |
206 | struct device_attribute *attr, const char *buf, size_t count) | |
207 | { | |
208 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
209 | long val; | |
210 | int ret; | |
211 | ||
212 | ret = kstrtol(buf, 0, &val); | |
213 | if (ret != 0 || val & ~7) | |
214 | return -EINVAL; | |
215 | ||
216 | ddata->mode = val; | |
217 | ||
218 | val |= TPO_R02_NCLK_RISING; | |
219 | tpo_td043_write(ddata->spi, 2, val); | |
220 | ||
221 | return count; | |
222 | } | |
223 | ||
224 | static ssize_t tpo_td043_gamma_show(struct device *dev, | |
225 | struct device_attribute *attr, char *buf) | |
226 | { | |
227 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
228 | ssize_t len = 0; | |
229 | int ret; | |
230 | int i; | |
231 | ||
232 | for (i = 0; i < ARRAY_SIZE(ddata->gamma); i++) { | |
233 | ret = snprintf(buf + len, PAGE_SIZE - len, "%u ", | |
234 | ddata->gamma[i]); | |
235 | if (ret < 0) | |
236 | return ret; | |
237 | len += ret; | |
238 | } | |
239 | buf[len - 1] = '\n'; | |
240 | ||
241 | return len; | |
242 | } | |
243 | ||
244 | static ssize_t tpo_td043_gamma_store(struct device *dev, | |
245 | struct device_attribute *attr, const char *buf, size_t count) | |
246 | { | |
247 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
248 | unsigned int g[12]; | |
249 | int ret; | |
250 | int i; | |
251 | ||
252 | ret = sscanf(buf, "%u %u %u %u %u %u %u %u %u %u %u %u", | |
253 | &g[0], &g[1], &g[2], &g[3], &g[4], &g[5], | |
254 | &g[6], &g[7], &g[8], &g[9], &g[10], &g[11]); | |
255 | ||
256 | if (ret != 12) | |
257 | return -EINVAL; | |
258 | ||
259 | for (i = 0; i < 12; i++) | |
260 | ddata->gamma[i] = g[i]; | |
261 | ||
262 | tpo_td043_write_gamma(ddata->spi, ddata->gamma); | |
263 | ||
264 | return count; | |
265 | } | |
266 | ||
267 | static DEVICE_ATTR(vmirror, S_IRUGO | S_IWUSR, | |
268 | tpo_td043_vmirror_show, tpo_td043_vmirror_store); | |
269 | static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, | |
270 | tpo_td043_mode_show, tpo_td043_mode_store); | |
271 | static DEVICE_ATTR(gamma, S_IRUGO | S_IWUSR, | |
272 | tpo_td043_gamma_show, tpo_td043_gamma_store); | |
273 | ||
274 | static struct attribute *tpo_td043_attrs[] = { | |
275 | &dev_attr_vmirror.attr, | |
276 | &dev_attr_mode.attr, | |
277 | &dev_attr_gamma.attr, | |
278 | NULL, | |
279 | }; | |
280 | ||
1b410a5a | 281 | static const struct attribute_group tpo_td043_attr_group = { |
f76ee892 TV |
282 | .attrs = tpo_td043_attrs, |
283 | }; | |
284 | ||
285 | static int tpo_td043_power_on(struct panel_drv_data *ddata) | |
286 | { | |
287 | int r; | |
288 | ||
289 | if (ddata->powered_on) | |
290 | return 0; | |
291 | ||
292 | r = regulator_enable(ddata->vcc_reg); | |
293 | if (r != 0) | |
294 | return r; | |
295 | ||
296 | /* wait for panel to stabilize */ | |
297 | msleep(160); | |
298 | ||
299 | if (gpio_is_valid(ddata->nreset_gpio)) | |
300 | gpio_set_value(ddata->nreset_gpio, 1); | |
301 | ||
302 | tpo_td043_write(ddata->spi, 2, | |
303 | TPO_R02_MODE(ddata->mode) | TPO_R02_NCLK_RISING); | |
304 | tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_NORMAL); | |
305 | tpo_td043_write(ddata->spi, 0x20, 0xf0); | |
306 | tpo_td043_write(ddata->spi, 0x21, 0xf0); | |
307 | tpo_td043_write_mirror(ddata->spi, ddata->hmirror, | |
308 | ddata->vmirror); | |
309 | tpo_td043_write_gamma(ddata->spi, ddata->gamma); | |
310 | ||
311 | ddata->powered_on = 1; | |
312 | return 0; | |
313 | } | |
314 | ||
315 | static void tpo_td043_power_off(struct panel_drv_data *ddata) | |
316 | { | |
317 | if (!ddata->powered_on) | |
318 | return; | |
319 | ||
320 | tpo_td043_write(ddata->spi, 3, | |
321 | TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM); | |
322 | ||
323 | if (gpio_is_valid(ddata->nreset_gpio)) | |
324 | gpio_set_value(ddata->nreset_gpio, 0); | |
325 | ||
326 | /* wait for at least 2 vsyncs before cutting off power */ | |
327 | msleep(50); | |
328 | ||
329 | tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_STANDBY); | |
330 | ||
331 | regulator_disable(ddata->vcc_reg); | |
332 | ||
333 | ddata->powered_on = 0; | |
334 | } | |
335 | ||
336 | static int tpo_td043_connect(struct omap_dss_device *dssdev) | |
337 | { | |
338 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
339 | struct omap_dss_device *in = ddata->in; | |
340 | int r; | |
341 | ||
342 | if (omapdss_device_is_connected(dssdev)) | |
343 | return 0; | |
344 | ||
345 | r = in->ops.dpi->connect(in, dssdev); | |
346 | if (r) | |
347 | return r; | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | static void tpo_td043_disconnect(struct omap_dss_device *dssdev) | |
353 | { | |
354 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
355 | struct omap_dss_device *in = ddata->in; | |
356 | ||
357 | if (!omapdss_device_is_connected(dssdev)) | |
358 | return; | |
359 | ||
360 | in->ops.dpi->disconnect(in, dssdev); | |
361 | } | |
362 | ||
363 | static int tpo_td043_enable(struct omap_dss_device *dssdev) | |
364 | { | |
365 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
366 | struct omap_dss_device *in = ddata->in; | |
367 | int r; | |
368 | ||
369 | if (!omapdss_device_is_connected(dssdev)) | |
370 | return -ENODEV; | |
371 | ||
372 | if (omapdss_device_is_enabled(dssdev)) | |
373 | return 0; | |
374 | ||
375 | if (ddata->data_lines) | |
376 | in->ops.dpi->set_data_lines(in, ddata->data_lines); | |
377 | in->ops.dpi->set_timings(in, &ddata->videomode); | |
378 | ||
379 | r = in->ops.dpi->enable(in); | |
380 | if (r) | |
381 | return r; | |
382 | ||
383 | /* | |
384 | * If we are resuming from system suspend, SPI clocks might not be | |
385 | * enabled yet, so we'll program the LCD from SPI PM resume callback. | |
386 | */ | |
387 | if (!ddata->spi_suspended) { | |
388 | r = tpo_td043_power_on(ddata); | |
389 | if (r) { | |
390 | in->ops.dpi->disable(in); | |
391 | return r; | |
392 | } | |
393 | } | |
394 | ||
395 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | static void tpo_td043_disable(struct omap_dss_device *dssdev) | |
401 | { | |
402 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
403 | struct omap_dss_device *in = ddata->in; | |
404 | ||
405 | if (!omapdss_device_is_enabled(dssdev)) | |
406 | return; | |
407 | ||
408 | in->ops.dpi->disable(in); | |
409 | ||
410 | if (!ddata->spi_suspended) | |
411 | tpo_td043_power_off(ddata); | |
412 | ||
413 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; | |
414 | } | |
415 | ||
416 | static void tpo_td043_set_timings(struct omap_dss_device *dssdev, | |
417 | struct omap_video_timings *timings) | |
418 | { | |
419 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
420 | struct omap_dss_device *in = ddata->in; | |
421 | ||
422 | ddata->videomode = *timings; | |
423 | dssdev->panel.timings = *timings; | |
424 | ||
425 | in->ops.dpi->set_timings(in, timings); | |
426 | } | |
427 | ||
428 | static void tpo_td043_get_timings(struct omap_dss_device *dssdev, | |
429 | struct omap_video_timings *timings) | |
430 | { | |
431 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
432 | ||
433 | *timings = ddata->videomode; | |
434 | } | |
435 | ||
436 | static int tpo_td043_check_timings(struct omap_dss_device *dssdev, | |
437 | struct omap_video_timings *timings) | |
438 | { | |
439 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
440 | struct omap_dss_device *in = ddata->in; | |
441 | ||
442 | return in->ops.dpi->check_timings(in, timings); | |
443 | } | |
444 | ||
445 | static struct omap_dss_driver tpo_td043_ops = { | |
446 | .connect = tpo_td043_connect, | |
447 | .disconnect = tpo_td043_disconnect, | |
448 | ||
449 | .enable = tpo_td043_enable, | |
450 | .disable = tpo_td043_disable, | |
451 | ||
452 | .set_timings = tpo_td043_set_timings, | |
453 | .get_timings = tpo_td043_get_timings, | |
454 | .check_timings = tpo_td043_check_timings, | |
455 | ||
456 | .set_mirror = tpo_td043_set_hmirror, | |
457 | .get_mirror = tpo_td043_get_hmirror, | |
458 | ||
459 | .get_resolution = omapdss_default_get_resolution, | |
460 | }; | |
461 | ||
462 | ||
f76ee892 TV |
463 | static int tpo_td043_probe_of(struct spi_device *spi) |
464 | { | |
465 | struct device_node *node = spi->dev.of_node; | |
466 | struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); | |
467 | struct omap_dss_device *in; | |
468 | int gpio; | |
469 | ||
470 | gpio = of_get_named_gpio(node, "reset-gpios", 0); | |
471 | if (!gpio_is_valid(gpio)) { | |
472 | dev_err(&spi->dev, "failed to parse enable gpio\n"); | |
473 | return gpio; | |
474 | } | |
475 | ddata->nreset_gpio = gpio; | |
476 | ||
477 | in = omapdss_of_find_source_for_first_ep(node); | |
478 | if (IS_ERR(in)) { | |
479 | dev_err(&spi->dev, "failed to find video source\n"); | |
480 | return PTR_ERR(in); | |
481 | } | |
482 | ||
483 | ddata->in = in; | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | static int tpo_td043_probe(struct spi_device *spi) | |
489 | { | |
490 | struct panel_drv_data *ddata; | |
491 | struct omap_dss_device *dssdev; | |
492 | int r; | |
493 | ||
494 | dev_dbg(&spi->dev, "%s\n", __func__); | |
495 | ||
97177bdd PU |
496 | if (!spi->dev.of_node) |
497 | return -ENODEV; | |
498 | ||
f76ee892 TV |
499 | spi->bits_per_word = 16; |
500 | spi->mode = SPI_MODE_0; | |
501 | ||
502 | r = spi_setup(spi); | |
503 | if (r < 0) { | |
504 | dev_err(&spi->dev, "spi_setup failed: %d\n", r); | |
505 | return r; | |
506 | } | |
507 | ||
508 | ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); | |
509 | if (ddata == NULL) | |
510 | return -ENOMEM; | |
511 | ||
512 | dev_set_drvdata(&spi->dev, ddata); | |
513 | ||
514 | ddata->spi = spi; | |
515 | ||
97177bdd PU |
516 | r = tpo_td043_probe_of(spi); |
517 | if (r) | |
518 | return r; | |
f76ee892 TV |
519 | |
520 | ddata->mode = TPO_R02_MODE_800x480; | |
521 | memcpy(ddata->gamma, tpo_td043_def_gamma, sizeof(ddata->gamma)); | |
522 | ||
523 | ddata->vcc_reg = devm_regulator_get(&spi->dev, "vcc"); | |
524 | if (IS_ERR(ddata->vcc_reg)) { | |
525 | dev_err(&spi->dev, "failed to get LCD VCC regulator\n"); | |
526 | r = PTR_ERR(ddata->vcc_reg); | |
527 | goto err_regulator; | |
528 | } | |
529 | ||
530 | if (gpio_is_valid(ddata->nreset_gpio)) { | |
531 | r = devm_gpio_request_one(&spi->dev, | |
532 | ddata->nreset_gpio, GPIOF_OUT_INIT_LOW, | |
533 | "lcd reset"); | |
534 | if (r < 0) { | |
535 | dev_err(&spi->dev, "couldn't request reset GPIO\n"); | |
536 | goto err_gpio_req; | |
537 | } | |
538 | } | |
539 | ||
540 | r = sysfs_create_group(&spi->dev.kobj, &tpo_td043_attr_group); | |
541 | if (r) { | |
542 | dev_err(&spi->dev, "failed to create sysfs files\n"); | |
543 | goto err_sysfs; | |
544 | } | |
545 | ||
546 | ddata->videomode = tpo_td043_timings; | |
547 | ||
548 | dssdev = &ddata->dssdev; | |
549 | dssdev->dev = &spi->dev; | |
550 | dssdev->driver = &tpo_td043_ops; | |
551 | dssdev->type = OMAP_DISPLAY_TYPE_DPI; | |
552 | dssdev->owner = THIS_MODULE; | |
553 | dssdev->panel.timings = ddata->videomode; | |
554 | ||
555 | r = omapdss_register_display(dssdev); | |
556 | if (r) { | |
557 | dev_err(&spi->dev, "Failed to register panel\n"); | |
558 | goto err_reg; | |
559 | } | |
560 | ||
561 | return 0; | |
562 | ||
563 | err_reg: | |
564 | sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group); | |
565 | err_sysfs: | |
566 | err_gpio_req: | |
567 | err_regulator: | |
568 | omap_dss_put_device(ddata->in); | |
569 | return r; | |
570 | } | |
571 | ||
572 | static int tpo_td043_remove(struct spi_device *spi) | |
573 | { | |
574 | struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); | |
575 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
576 | struct omap_dss_device *in = ddata->in; | |
577 | ||
578 | dev_dbg(&ddata->spi->dev, "%s\n", __func__); | |
579 | ||
580 | omapdss_unregister_display(dssdev); | |
581 | ||
582 | tpo_td043_disable(dssdev); | |
583 | tpo_td043_disconnect(dssdev); | |
584 | ||
585 | omap_dss_put_device(in); | |
586 | ||
587 | sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group); | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | #ifdef CONFIG_PM_SLEEP | |
593 | static int tpo_td043_spi_suspend(struct device *dev) | |
594 | { | |
595 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
596 | ||
597 | dev_dbg(dev, "tpo_td043_spi_suspend, tpo %p\n", ddata); | |
598 | ||
599 | ddata->power_on_resume = ddata->powered_on; | |
600 | tpo_td043_power_off(ddata); | |
601 | ddata->spi_suspended = 1; | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | static int tpo_td043_spi_resume(struct device *dev) | |
607 | { | |
608 | struct panel_drv_data *ddata = dev_get_drvdata(dev); | |
609 | int ret; | |
610 | ||
611 | dev_dbg(dev, "tpo_td043_spi_resume\n"); | |
612 | ||
613 | if (ddata->power_on_resume) { | |
614 | ret = tpo_td043_power_on(ddata); | |
615 | if (ret) | |
616 | return ret; | |
617 | } | |
618 | ddata->spi_suspended = 0; | |
619 | ||
620 | return 0; | |
621 | } | |
622 | #endif | |
623 | ||
624 | static SIMPLE_DEV_PM_OPS(tpo_td043_spi_pm, | |
625 | tpo_td043_spi_suspend, tpo_td043_spi_resume); | |
626 | ||
627 | static const struct of_device_id tpo_td043_of_match[] = { | |
628 | { .compatible = "omapdss,tpo,td043mtea1", }, | |
629 | {}, | |
630 | }; | |
631 | ||
632 | MODULE_DEVICE_TABLE(of, tpo_td043_of_match); | |
633 | ||
634 | static struct spi_driver tpo_td043_spi_driver = { | |
635 | .driver = { | |
636 | .name = "panel-tpo-td043mtea1", | |
637 | .pm = &tpo_td043_spi_pm, | |
638 | .of_match_table = tpo_td043_of_match, | |
639 | .suppress_bind_attrs = true, | |
640 | }, | |
641 | .probe = tpo_td043_probe, | |
642 | .remove = tpo_td043_remove, | |
643 | }; | |
644 | ||
645 | module_spi_driver(tpo_td043_spi_driver); | |
646 | ||
647 | MODULE_ALIAS("spi:tpo,td043mtea1"); | |
648 | MODULE_AUTHOR("Gražvydas Ignotas <notasas@gmail.com>"); | |
649 | MODULE_DESCRIPTION("TPO TD043MTEA1 LCD Driver"); | |
650 | MODULE_LICENSE("GPL"); |