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27#include <linux/module.h>
28#include <linux/delay.h>
29#include <linux/spi/spi.h>
30#include <linux/gpio.h>
31#include <video/omapdss.h>
32#include <video/omap-panel-data.h>
33
34struct panel_drv_data {
35 struct omap_dss_device dssdev;
36 struct omap_dss_device *in;
37
38 int data_lines;
39
40 struct omap_video_timings videomode;
41
42 struct spi_device *spi_dev;
43};
44
45static struct omap_video_timings td028ttec1_panel_timings = {
46 .x_res = 480,
47 .y_res = 640,
48 .pixelclock = 22153000,
49 .hfp = 24,
50 .hsw = 8,
51 .hbp = 8,
52 .vfp = 4,
53 .vsw = 2,
54 .vbp = 2,
55
56 .vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
57 .hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
58
59 .data_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
60 .de_level = OMAPDSS_SIG_ACTIVE_HIGH,
61 .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
62};
63
64#define JBT_COMMAND 0x000
65#define JBT_DATA 0x100
66
67static int jbt_ret_write_0(struct panel_drv_data *ddata, u8 reg)
68{
69 int rc;
70 u16 tx_buf = JBT_COMMAND | reg;
71
72 rc = spi_write(ddata->spi_dev, (u8 *)&tx_buf,
73 1*sizeof(u16));
74 if (rc != 0)
75 dev_err(&ddata->spi_dev->dev,
76 "jbt_ret_write_0 spi_write ret %d\n", rc);
77
78 return rc;
79}
80
81static int jbt_reg_write_1(struct panel_drv_data *ddata, u8 reg, u8 data)
82{
83 int rc;
84 u16 tx_buf[2];
85
86 tx_buf[0] = JBT_COMMAND | reg;
87 tx_buf[1] = JBT_DATA | data;
88 rc = spi_write(ddata->spi_dev, (u8 *)tx_buf,
89 2*sizeof(u16));
90 if (rc != 0)
91 dev_err(&ddata->spi_dev->dev,
92 "jbt_reg_write_1 spi_write ret %d\n", rc);
93
94 return rc;
95}
96
97static int jbt_reg_write_2(struct panel_drv_data *ddata, u8 reg, u16 data)
98{
99 int rc;
100 u16 tx_buf[3];
101
102 tx_buf[0] = JBT_COMMAND | reg;
103 tx_buf[1] = JBT_DATA | (data >> 8);
104 tx_buf[2] = JBT_DATA | (data & 0xff);
105
106 rc = spi_write(ddata->spi_dev, (u8 *)tx_buf,
107 3*sizeof(u16));
108
109 if (rc != 0)
110 dev_err(&ddata->spi_dev->dev,
111 "jbt_reg_write_2 spi_write ret %d\n", rc);
112
113 return rc;
114}
115
116enum jbt_register {
117 JBT_REG_SLEEP_IN = 0x10,
118 JBT_REG_SLEEP_OUT = 0x11,
119
120 JBT_REG_DISPLAY_OFF = 0x28,
121 JBT_REG_DISPLAY_ON = 0x29,
122
123 JBT_REG_RGB_FORMAT = 0x3a,
124 JBT_REG_QUAD_RATE = 0x3b,
125
126 JBT_REG_POWER_ON_OFF = 0xb0,
127 JBT_REG_BOOSTER_OP = 0xb1,
128 JBT_REG_BOOSTER_MODE = 0xb2,
129 JBT_REG_BOOSTER_FREQ = 0xb3,
130 JBT_REG_OPAMP_SYSCLK = 0xb4,
131 JBT_REG_VSC_VOLTAGE = 0xb5,
132 JBT_REG_VCOM_VOLTAGE = 0xb6,
133 JBT_REG_EXT_DISPL = 0xb7,
134 JBT_REG_OUTPUT_CONTROL = 0xb8,
135 JBT_REG_DCCLK_DCEV = 0xb9,
136 JBT_REG_DISPLAY_MODE1 = 0xba,
137 JBT_REG_DISPLAY_MODE2 = 0xbb,
138 JBT_REG_DISPLAY_MODE = 0xbc,
139 JBT_REG_ASW_SLEW = 0xbd,
140 JBT_REG_DUMMY_DISPLAY = 0xbe,
141 JBT_REG_DRIVE_SYSTEM = 0xbf,
142
143 JBT_REG_SLEEP_OUT_FR_A = 0xc0,
144 JBT_REG_SLEEP_OUT_FR_B = 0xc1,
145 JBT_REG_SLEEP_OUT_FR_C = 0xc2,
146 JBT_REG_SLEEP_IN_LCCNT_D = 0xc3,
147 JBT_REG_SLEEP_IN_LCCNT_E = 0xc4,
148 JBT_REG_SLEEP_IN_LCCNT_F = 0xc5,
149 JBT_REG_SLEEP_IN_LCCNT_G = 0xc6,
150
151 JBT_REG_GAMMA1_FINE_1 = 0xc7,
152 JBT_REG_GAMMA1_FINE_2 = 0xc8,
153 JBT_REG_GAMMA1_INCLINATION = 0xc9,
154 JBT_REG_GAMMA1_BLUE_OFFSET = 0xca,
155
156 JBT_REG_BLANK_CONTROL = 0xcf,
157 JBT_REG_BLANK_TH_TV = 0xd0,
158 JBT_REG_CKV_ON_OFF = 0xd1,
159 JBT_REG_CKV_1_2 = 0xd2,
160 JBT_REG_OEV_TIMING = 0xd3,
161 JBT_REG_ASW_TIMING_1 = 0xd4,
162 JBT_REG_ASW_TIMING_2 = 0xd5,
163
164 JBT_REG_HCLOCK_VGA = 0xec,
165 JBT_REG_HCLOCK_QVGA = 0xed,
166};
167
168#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
169
170static int td028ttec1_panel_connect(struct omap_dss_device *dssdev)
171{
172 struct panel_drv_data *ddata = to_panel_data(dssdev);
173 struct omap_dss_device *in = ddata->in;
174 int r;
175
176 if (omapdss_device_is_connected(dssdev))
177 return 0;
178
179 r = in->ops.dpi->connect(in, dssdev);
180 if (r)
181 return r;
182
183 return 0;
184}
185
186static void td028ttec1_panel_disconnect(struct omap_dss_device *dssdev)
187{
188 struct panel_drv_data *ddata = to_panel_data(dssdev);
189 struct omap_dss_device *in = ddata->in;
190
191 if (!omapdss_device_is_connected(dssdev))
192 return;
193
194 in->ops.dpi->disconnect(in, dssdev);
195}
196
197static int td028ttec1_panel_enable(struct omap_dss_device *dssdev)
198{
199 struct panel_drv_data *ddata = to_panel_data(dssdev);
200 struct omap_dss_device *in = ddata->in;
201 int r;
202
203 if (!omapdss_device_is_connected(dssdev))
204 return -ENODEV;
205
206 if (omapdss_device_is_enabled(dssdev))
207 return 0;
208
209 if (ddata->data_lines)
210 in->ops.dpi->set_data_lines(in, ddata->data_lines);
211 in->ops.dpi->set_timings(in, &ddata->videomode);
212
213 r = in->ops.dpi->enable(in);
214 if (r)
215 return r;
216
217 dev_dbg(dssdev->dev, "td028ttec1_panel_enable() - state %d\n",
218 dssdev->state);
219
220
221 r |= jbt_ret_write_0(ddata, 0x00);
222 usleep_range(1000, 2000);
223 r |= jbt_ret_write_0(ddata, 0x00);
224 usleep_range(1000, 2000);
225 r |= jbt_ret_write_0(ddata, 0x00);
226 usleep_range(1000, 2000);
227
228 if (r) {
229 dev_warn(dssdev->dev, "transfer error\n");
230 goto transfer_err;
231 }
232
233
234 r |= jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x17);
235
236
237 r |= jbt_reg_write_1(ddata, JBT_REG_DISPLAY_MODE, 0x80);
238
239
240 r |= jbt_reg_write_1(ddata, JBT_REG_QUAD_RATE, 0x00);
241
242
243 r |= jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x16);
244
245
246 r |= jbt_reg_write_2(ddata, JBT_REG_OUTPUT_CONTROL, 0xfff9);
247
248
249 r |= jbt_ret_write_0(ddata, JBT_REG_SLEEP_OUT);
250
251
252
253
254 r |= jbt_reg_write_1(ddata, JBT_REG_DISPLAY_MODE1, 0x01);
255 r |= jbt_reg_write_1(ddata, JBT_REG_DISPLAY_MODE2, 0x00);
256 r |= jbt_reg_write_1(ddata, JBT_REG_RGB_FORMAT, 0x60);
257 r |= jbt_reg_write_1(ddata, JBT_REG_DRIVE_SYSTEM, 0x10);
258 r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_OP, 0x56);
259 r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_MODE, 0x33);
260 r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_FREQ, 0x11);
261 r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_FREQ, 0x11);
262 r |= jbt_reg_write_1(ddata, JBT_REG_OPAMP_SYSCLK, 0x02);
263 r |= jbt_reg_write_1(ddata, JBT_REG_VSC_VOLTAGE, 0x2b);
264 r |= jbt_reg_write_1(ddata, JBT_REG_VCOM_VOLTAGE, 0x40);
265 r |= jbt_reg_write_1(ddata, JBT_REG_EXT_DISPL, 0x03);
266 r |= jbt_reg_write_1(ddata, JBT_REG_DCCLK_DCEV, 0x04);
267
268
269
270
271 r |= jbt_reg_write_1(ddata, JBT_REG_ASW_SLEW, 0x04);
272 r |= jbt_reg_write_1(ddata, JBT_REG_DUMMY_DISPLAY, 0x00);
273
274 r |= jbt_reg_write_1(ddata, JBT_REG_SLEEP_OUT_FR_A, 0x11);
275 r |= jbt_reg_write_1(ddata, JBT_REG_SLEEP_OUT_FR_B, 0x11);
276 r |= jbt_reg_write_1(ddata, JBT_REG_SLEEP_OUT_FR_C, 0x11);
277 r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_D, 0x2040);
278 r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_E, 0x60c0);
279 r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_F, 0x1020);
280 r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_G, 0x60c0);
281
282 r |= jbt_reg_write_2(ddata, JBT_REG_GAMMA1_FINE_1, 0x5533);
283 r |= jbt_reg_write_1(ddata, JBT_REG_GAMMA1_FINE_2, 0x00);
284 r |= jbt_reg_write_1(ddata, JBT_REG_GAMMA1_INCLINATION, 0x00);
285 r |= jbt_reg_write_1(ddata, JBT_REG_GAMMA1_BLUE_OFFSET, 0x00);
286
287 r |= jbt_reg_write_2(ddata, JBT_REG_HCLOCK_VGA, 0x1f0);
288 r |= jbt_reg_write_1(ddata, JBT_REG_BLANK_CONTROL, 0x02);
289 r |= jbt_reg_write_2(ddata, JBT_REG_BLANK_TH_TV, 0x0804);
290
291 r |= jbt_reg_write_1(ddata, JBT_REG_CKV_ON_OFF, 0x01);
292 r |= jbt_reg_write_2(ddata, JBT_REG_CKV_1_2, 0x0000);
293
294 r |= jbt_reg_write_2(ddata, JBT_REG_OEV_TIMING, 0x0d0e);
295 r |= jbt_reg_write_2(ddata, JBT_REG_ASW_TIMING_1, 0x11a4);
296 r |= jbt_reg_write_1(ddata, JBT_REG_ASW_TIMING_2, 0x0e);
297
298 r |= jbt_ret_write_0(ddata, JBT_REG_DISPLAY_ON);
299
300 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
301
302transfer_err:
303
304 return r ? -EIO : 0;
305}
306
307static void td028ttec1_panel_disable(struct omap_dss_device *dssdev)
308{
309 struct panel_drv_data *ddata = to_panel_data(dssdev);
310 struct omap_dss_device *in = ddata->in;
311
312 if (!omapdss_device_is_enabled(dssdev))
313 return;
314
315 dev_dbg(dssdev->dev, "td028ttec1_panel_disable()\n");
316
317 jbt_ret_write_0(ddata, JBT_REG_DISPLAY_OFF);
318 jbt_reg_write_2(ddata, JBT_REG_OUTPUT_CONTROL, 0x8002);
319 jbt_ret_write_0(ddata, JBT_REG_SLEEP_IN);
320 jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x00);
321
322 in->ops.dpi->disable(in);
323
324 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
325}
326
327static void td028ttec1_panel_set_timings(struct omap_dss_device *dssdev,
328 struct omap_video_timings *timings)
329{
330 struct panel_drv_data *ddata = to_panel_data(dssdev);
331 struct omap_dss_device *in = ddata->in;
332
333 ddata->videomode = *timings;
334 dssdev->panel.timings = *timings;
335
336 in->ops.dpi->set_timings(in, timings);
337}
338
339static void td028ttec1_panel_get_timings(struct omap_dss_device *dssdev,
340 struct omap_video_timings *timings)
341{
342 struct panel_drv_data *ddata = to_panel_data(dssdev);
343
344 *timings = ddata->videomode;
345}
346
347static int td028ttec1_panel_check_timings(struct omap_dss_device *dssdev,
348 struct omap_video_timings *timings)
349{
350 struct panel_drv_data *ddata = to_panel_data(dssdev);
351 struct omap_dss_device *in = ddata->in;
352
353 return in->ops.dpi->check_timings(in, timings);
354}
355
356static struct omap_dss_driver td028ttec1_ops = {
357 .connect = td028ttec1_panel_connect,
358 .disconnect = td028ttec1_panel_disconnect,
359
360 .enable = td028ttec1_panel_enable,
361 .disable = td028ttec1_panel_disable,
362
363 .set_timings = td028ttec1_panel_set_timings,
364 .get_timings = td028ttec1_panel_get_timings,
365 .check_timings = td028ttec1_panel_check_timings,
366};
367
368static int td028ttec1_panel_probe_pdata(struct spi_device *spi)
369{
370 const struct panel_tpo_td028ttec1_platform_data *pdata;
371 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
372 struct omap_dss_device *dssdev, *in;
373
374 pdata = dev_get_platdata(&spi->dev);
375
376 in = omap_dss_find_output(pdata->source);
377 if (in == NULL) {
378 dev_err(&spi->dev, "failed to find video source '%s'\n",
379 pdata->source);
380 return -EPROBE_DEFER;
381 }
382
383 ddata->in = in;
384
385 ddata->data_lines = pdata->data_lines;
386
387 dssdev = &ddata->dssdev;
388 dssdev->name = pdata->name;
389
390 return 0;
391}
392
393static int td028ttec1_probe_of(struct spi_device *spi)
394{
395 struct device_node *node = spi->dev.of_node;
396 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
397 struct omap_dss_device *in;
398
399 in = omapdss_of_find_source_for_first_ep(node);
400 if (IS_ERR(in)) {
401 dev_err(&spi->dev, "failed to find video source\n");
402 return PTR_ERR(in);
403 }
404
405 ddata->in = in;
406
407 return 0;
408}
409
410static int td028ttec1_panel_probe(struct spi_device *spi)
411{
412 struct panel_drv_data *ddata;
413 struct omap_dss_device *dssdev;
414 int r;
415
416 dev_dbg(&spi->dev, "%s\n", __func__);
417
418 spi->bits_per_word = 9;
419 spi->mode = SPI_MODE_3;
420
421 r = spi_setup(spi);
422 if (r < 0) {
423 dev_err(&spi->dev, "spi_setup failed: %d\n", r);
424 return r;
425 }
426
427 ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
428 if (ddata == NULL)
429 return -ENOMEM;
430
431 dev_set_drvdata(&spi->dev, ddata);
432
433 ddata->spi_dev = spi;
434
435 if (dev_get_platdata(&spi->dev)) {
436 r = td028ttec1_panel_probe_pdata(spi);
437 if (r)
438 return r;
439 } else if (spi->dev.of_node) {
440 r = td028ttec1_probe_of(spi);
441 if (r)
442 return r;
443 } else {
444 return -ENODEV;
445 }
446
447 ddata->videomode = td028ttec1_panel_timings;
448
449 dssdev = &ddata->dssdev;
450 dssdev->dev = &spi->dev;
451 dssdev->driver = &td028ttec1_ops;
452 dssdev->type = OMAP_DISPLAY_TYPE_DPI;
453 dssdev->owner = THIS_MODULE;
454 dssdev->panel.timings = ddata->videomode;
455 dssdev->phy.dpi.data_lines = ddata->data_lines;
456
457 r = omapdss_register_display(dssdev);
458 if (r) {
459 dev_err(&spi->dev, "Failed to register panel\n");
460 goto err_reg;
461 }
462
463 return 0;
464
465err_reg:
466 omap_dss_put_device(ddata->in);
467 return r;
468}
469
470static int td028ttec1_panel_remove(struct spi_device *spi)
471{
472 struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
473 struct omap_dss_device *dssdev = &ddata->dssdev;
474 struct omap_dss_device *in = ddata->in;
475
476 dev_dbg(&ddata->spi_dev->dev, "%s\n", __func__);
477
478 omapdss_unregister_display(dssdev);
479
480 td028ttec1_panel_disable(dssdev);
481 td028ttec1_panel_disconnect(dssdev);
482
483 omap_dss_put_device(in);
484
485 return 0;
486}
487
488static const struct of_device_id td028ttec1_of_match[] = {
489 { .compatible = "omapdss,toppoly,td028ttec1", },
490 {},
491};
492
493MODULE_DEVICE_TABLE(of, td028ttec1_of_match);
494
495static struct spi_driver td028ttec1_spi_driver = {
496 .probe = td028ttec1_panel_probe,
497 .remove = td028ttec1_panel_remove,
498
499 .driver = {
500 .name = "panel-tpo-td028ttec1",
501 .owner = THIS_MODULE,
502 .of_match_table = td028ttec1_of_match,
503 .suppress_bind_attrs = true,
504 },
505};
506
507module_spi_driver(td028ttec1_spi_driver);
508
509MODULE_ALIAS("spi:toppoly,td028ttec1");
510MODULE_AUTHOR("H. Nikolaus Schaller <hns@goldelico.com>");
511MODULE_DESCRIPTION("Toppoly TD028TTEC1 panel driver");
512MODULE_LICENSE("GPL");
513
