Commit | Line | Data |
---|---|---|
9fd04fe3 GL |
1 | /* |
2 | * Renesas SH-mobile MIPI DSI support | |
3 | * | |
4 | * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
5 | * | |
6 | * This is free software; you can redistribute it and/or modify | |
7 | * it under the terms of version 2 of the GNU General Public License as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
26c3d7ac | 11 | #include <linux/bitmap.h> |
9fd04fe3 GL |
12 | #include <linux/clk.h> |
13 | #include <linux/delay.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/platform_device.h> | |
236782a5 | 17 | #include <linux/pm_runtime.h> |
9fd04fe3 GL |
18 | #include <linux/slab.h> |
19 | #include <linux/string.h> | |
20 | #include <linux/types.h> | |
355b200b | 21 | #include <linux/module.h> |
9fd04fe3 GL |
22 | |
23 | #include <video/mipi_display.h> | |
24 | #include <video/sh_mipi_dsi.h> | |
25 | #include <video/sh_mobile_lcdc.h> | |
26 | ||
71b146c8 MD |
27 | #define SYSCTRL 0x0000 |
28 | #define SYSCONF 0x0004 | |
29 | #define TIMSET 0x0008 | |
30 | #define RESREQSET0 0x0018 | |
31 | #define RESREQSET1 0x001c | |
32 | #define HSTTOVSET 0x0020 | |
33 | #define LPRTOVSET 0x0024 | |
34 | #define TATOVSET 0x0028 | |
35 | #define PRTOVSET 0x002c | |
36 | #define DSICTRL 0x0030 | |
37 | #define DSIINTE 0x0060 | |
38 | #define PHYCTRL 0x0070 | |
39 | ||
deaba190 MD |
40 | /* relative to linkbase */ |
41 | #define DTCTR 0x0000 | |
42 | #define VMCTR1 0x0020 | |
43 | #define VMCTR2 0x0024 | |
44 | #define VMLEN1 0x0028 | |
08750617 | 45 | #define VMLEN2 0x002c |
deaba190 MD |
46 | #define CMTSRTREQ 0x0070 |
47 | #define CMTSRTCTR 0x00d0 | |
9fd04fe3 GL |
48 | |
49 | /* E.g., sh7372 has 2 MIPI-DSIs - one for each LCDC */ | |
50 | #define MAX_SH_MIPI_DSI 2 | |
51 | ||
52 | struct sh_mipi { | |
53 | void __iomem *base; | |
deaba190 | 54 | void __iomem *linkbase; |
9fd04fe3 | 55 | struct clk *dsit_clk; |
236782a5 GL |
56 | struct device *dev; |
57 | ||
58 | void *next_board_data; | |
59 | void (*next_display_on)(void *board_data, struct fb_info *info); | |
60 | void (*next_display_off)(void *board_data); | |
9fd04fe3 GL |
61 | }; |
62 | ||
63 | static struct sh_mipi *mipi_dsi[MAX_SH_MIPI_DSI]; | |
64 | ||
65 | /* Protect the above array */ | |
66 | static DEFINE_MUTEX(array_lock); | |
67 | ||
68 | static struct sh_mipi *sh_mipi_by_handle(int handle) | |
69 | { | |
70 | if (handle >= ARRAY_SIZE(mipi_dsi) || handle < 0) | |
71 | return NULL; | |
72 | ||
73 | return mipi_dsi[handle]; | |
74 | } | |
75 | ||
76 | static int sh_mipi_send_short(struct sh_mipi *mipi, u8 dsi_cmd, | |
77 | u8 cmd, u8 param) | |
78 | { | |
79 | u32 data = (dsi_cmd << 24) | (cmd << 16) | (param << 8); | |
80 | int cnt = 100; | |
81 | ||
82 | /* transmit a short packet to LCD panel */ | |
deaba190 MD |
83 | iowrite32(1 | data, mipi->linkbase + CMTSRTCTR); |
84 | iowrite32(1, mipi->linkbase + CMTSRTREQ); | |
9fd04fe3 | 85 | |
deaba190 | 86 | while ((ioread32(mipi->linkbase + CMTSRTREQ) & 1) && --cnt) |
9fd04fe3 GL |
87 | udelay(1); |
88 | ||
89 | return cnt ? 0 : -ETIMEDOUT; | |
90 | } | |
91 | ||
92 | #define LCD_CHAN2MIPI(c) ((c) < LCDC_CHAN_MAINLCD || (c) > LCDC_CHAN_SUBLCD ? \ | |
93 | -EINVAL : (c) - 1) | |
94 | ||
95 | static int sh_mipi_dcs(int handle, u8 cmd) | |
96 | { | |
97 | struct sh_mipi *mipi = sh_mipi_by_handle(LCD_CHAN2MIPI(handle)); | |
98 | if (!mipi) | |
99 | return -ENODEV; | |
100 | return sh_mipi_send_short(mipi, MIPI_DSI_DCS_SHORT_WRITE, cmd, 0); | |
101 | } | |
102 | ||
103 | static int sh_mipi_dcs_param(int handle, u8 cmd, u8 param) | |
104 | { | |
105 | struct sh_mipi *mipi = sh_mipi_by_handle(LCD_CHAN2MIPI(handle)); | |
106 | if (!mipi) | |
107 | return -ENODEV; | |
108 | return sh_mipi_send_short(mipi, MIPI_DSI_DCS_SHORT_WRITE_PARAM, cmd, | |
109 | param); | |
110 | } | |
111 | ||
112 | static void sh_mipi_dsi_enable(struct sh_mipi *mipi, bool enable) | |
113 | { | |
114 | /* | |
115 | * enable LCDC data tx, transition to LPS after completion of each HS | |
116 | * packet | |
117 | */ | |
deaba190 | 118 | iowrite32(0x00000002 | enable, mipi->linkbase + DTCTR); |
9fd04fe3 GL |
119 | } |
120 | ||
121 | static void sh_mipi_shutdown(struct platform_device *pdev) | |
122 | { | |
123 | struct sh_mipi *mipi = platform_get_drvdata(pdev); | |
124 | ||
125 | sh_mipi_dsi_enable(mipi, false); | |
126 | } | |
127 | ||
c2439398 | 128 | static void mipi_display_on(void *arg, struct fb_info *info) |
9fd04fe3 GL |
129 | { |
130 | struct sh_mipi *mipi = arg; | |
131 | ||
236782a5 | 132 | pm_runtime_get_sync(mipi->dev); |
9fd04fe3 | 133 | sh_mipi_dsi_enable(mipi, true); |
6722a401 MD |
134 | |
135 | if (mipi->next_display_on) | |
136 | mipi->next_display_on(mipi->next_board_data, info); | |
9fd04fe3 GL |
137 | } |
138 | ||
139 | static void mipi_display_off(void *arg) | |
140 | { | |
141 | struct sh_mipi *mipi = arg; | |
142 | ||
6722a401 MD |
143 | if (mipi->next_display_off) |
144 | mipi->next_display_off(mipi->next_board_data); | |
145 | ||
9fd04fe3 | 146 | sh_mipi_dsi_enable(mipi, false); |
236782a5 | 147 | pm_runtime_put(mipi->dev); |
9fd04fe3 GL |
148 | } |
149 | ||
150 | static int __init sh_mipi_setup(struct sh_mipi *mipi, | |
151 | struct sh_mipi_dsi_info *pdata) | |
152 | { | |
153 | void __iomem *base = mipi->base; | |
154 | struct sh_mobile_lcdc_chan_cfg *ch = pdata->lcd_chan; | |
f832906a | 155 | u32 pctype, datatype, pixfmt, linelength, vmctr2; |
a2e62971 | 156 | u32 tmp, top, bottom, delay, div; |
9fd04fe3 | 157 | bool yuv; |
08750617 | 158 | int bpp; |
9fd04fe3 | 159 | |
44432407 GL |
160 | /* |
161 | * Select data format. MIPI DSI is not hot-pluggable, so, we just use | |
162 | * the default videomode. If this ever becomes a problem, We'll have to | |
163 | * move this to mipi_display_on() above and use info->var.xres | |
164 | */ | |
9fd04fe3 GL |
165 | switch (pdata->data_format) { |
166 | case MIPI_RGB888: | |
167 | pctype = 0; | |
168 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_24; | |
169 | pixfmt = MIPI_DCS_PIXEL_FMT_24BIT; | |
44432407 | 170 | linelength = ch->lcd_cfg[0].xres * 3; |
9fd04fe3 GL |
171 | yuv = false; |
172 | break; | |
173 | case MIPI_RGB565: | |
174 | pctype = 1; | |
175 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_16; | |
176 | pixfmt = MIPI_DCS_PIXEL_FMT_16BIT; | |
44432407 | 177 | linelength = ch->lcd_cfg[0].xres * 2; |
9fd04fe3 GL |
178 | yuv = false; |
179 | break; | |
180 | case MIPI_RGB666_LP: | |
181 | pctype = 2; | |
182 | datatype = MIPI_DSI_PIXEL_STREAM_3BYTE_18; | |
183 | pixfmt = MIPI_DCS_PIXEL_FMT_24BIT; | |
44432407 | 184 | linelength = ch->lcd_cfg[0].xres * 3; |
9fd04fe3 GL |
185 | yuv = false; |
186 | break; | |
187 | case MIPI_RGB666: | |
188 | pctype = 3; | |
189 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_18; | |
190 | pixfmt = MIPI_DCS_PIXEL_FMT_18BIT; | |
44432407 | 191 | linelength = (ch->lcd_cfg[0].xres * 18 + 7) / 8; |
9fd04fe3 GL |
192 | yuv = false; |
193 | break; | |
194 | case MIPI_BGR888: | |
195 | pctype = 8; | |
196 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_24; | |
197 | pixfmt = MIPI_DCS_PIXEL_FMT_24BIT; | |
44432407 | 198 | linelength = ch->lcd_cfg[0].xres * 3; |
9fd04fe3 GL |
199 | yuv = false; |
200 | break; | |
201 | case MIPI_BGR565: | |
202 | pctype = 9; | |
203 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_16; | |
204 | pixfmt = MIPI_DCS_PIXEL_FMT_16BIT; | |
44432407 | 205 | linelength = ch->lcd_cfg[0].xres * 2; |
9fd04fe3 GL |
206 | yuv = false; |
207 | break; | |
208 | case MIPI_BGR666_LP: | |
209 | pctype = 0xa; | |
210 | datatype = MIPI_DSI_PIXEL_STREAM_3BYTE_18; | |
211 | pixfmt = MIPI_DCS_PIXEL_FMT_24BIT; | |
44432407 | 212 | linelength = ch->lcd_cfg[0].xres * 3; |
9fd04fe3 GL |
213 | yuv = false; |
214 | break; | |
215 | case MIPI_BGR666: | |
216 | pctype = 0xb; | |
217 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_18; | |
218 | pixfmt = MIPI_DCS_PIXEL_FMT_18BIT; | |
44432407 | 219 | linelength = (ch->lcd_cfg[0].xres * 18 + 7) / 8; |
9fd04fe3 GL |
220 | yuv = false; |
221 | break; | |
222 | case MIPI_YUYV: | |
223 | pctype = 4; | |
224 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR16; | |
225 | pixfmt = MIPI_DCS_PIXEL_FMT_16BIT; | |
44432407 | 226 | linelength = ch->lcd_cfg[0].xres * 2; |
9fd04fe3 GL |
227 | yuv = true; |
228 | break; | |
229 | case MIPI_UYVY: | |
230 | pctype = 5; | |
231 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR16; | |
232 | pixfmt = MIPI_DCS_PIXEL_FMT_16BIT; | |
44432407 | 233 | linelength = ch->lcd_cfg[0].xres * 2; |
9fd04fe3 GL |
234 | yuv = true; |
235 | break; | |
236 | case MIPI_YUV420_L: | |
237 | pctype = 6; | |
238 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR12; | |
239 | pixfmt = MIPI_DCS_PIXEL_FMT_12BIT; | |
44432407 | 240 | linelength = (ch->lcd_cfg[0].xres * 12 + 7) / 8; |
9fd04fe3 GL |
241 | yuv = true; |
242 | break; | |
243 | case MIPI_YUV420: | |
244 | pctype = 7; | |
245 | datatype = MIPI_DSI_PACKED_PIXEL_STREAM_YCBCR12; | |
246 | pixfmt = MIPI_DCS_PIXEL_FMT_12BIT; | |
247 | /* Length of U/V line */ | |
44432407 | 248 | linelength = (ch->lcd_cfg[0].xres + 1) / 2; |
9fd04fe3 GL |
249 | yuv = true; |
250 | break; | |
251 | default: | |
252 | return -EINVAL; | |
253 | } | |
254 | ||
255 | if ((yuv && ch->interface_type != YUV422) || | |
256 | (!yuv && ch->interface_type != RGB24)) | |
257 | return -EINVAL; | |
258 | ||
26c3d7ac KM |
259 | if (!pdata->lane) |
260 | return -EINVAL; | |
261 | ||
9fd04fe3 | 262 | /* reset DSI link */ |
71b146c8 | 263 | iowrite32(0x00000001, base + SYSCTRL); |
9fd04fe3 GL |
264 | /* Hold reset for 100 cycles of the slowest of bus, HS byte and LP clock */ |
265 | udelay(50); | |
71b146c8 | 266 | iowrite32(0x00000000, base + SYSCTRL); |
9fd04fe3 GL |
267 | |
268 | /* setup DSI link */ | |
269 | ||
270 | /* | |
271 | * Default = ULPS enable | | |
272 | * Contention detection enabled | | |
273 | * EoT packet transmission enable | | |
274 | * CRC check enable | | |
275 | * ECC check enable | |
276 | * additionally enable first two lanes | |
277 | */ | |
26c3d7ac KM |
278 | bitmap_fill((unsigned long *)&tmp, pdata->lane); |
279 | tmp |= 0x00003700; | |
280 | iowrite32(tmp, base + SYSCONF); | |
281 | ||
9fd04fe3 GL |
282 | /* |
283 | * T_wakeup = 0x7000 | |
284 | * T_hs-trail = 3 | |
285 | * T_hs-prepare = 3 | |
286 | * T_clk-trail = 3 | |
287 | * T_clk-prepare = 2 | |
288 | */ | |
71b146c8 | 289 | iowrite32(0x70003332, base + TIMSET); |
9fd04fe3 | 290 | /* no responses requested */ |
71b146c8 | 291 | iowrite32(0x00000000, base + RESREQSET0); |
9fd04fe3 | 292 | /* request response to packets of type 0x28 */ |
71b146c8 | 293 | iowrite32(0x00000100, base + RESREQSET1); |
9fd04fe3 | 294 | /* High-speed transmission timeout, default 0xffffffff */ |
71b146c8 | 295 | iowrite32(0x0fffffff, base + HSTTOVSET); |
9fd04fe3 | 296 | /* LP reception timeout, default 0xffffffff */ |
71b146c8 | 297 | iowrite32(0x0fffffff, base + LPRTOVSET); |
9fd04fe3 | 298 | /* Turn-around timeout, default 0xffffffff */ |
71b146c8 | 299 | iowrite32(0x0fffffff, base + TATOVSET); |
9fd04fe3 | 300 | /* Peripheral reset timeout, default 0xffffffff */ |
71b146c8 | 301 | iowrite32(0x0fffffff, base + PRTOVSET); |
9fd04fe3 | 302 | /* Enable timeout counters */ |
71b146c8 | 303 | iowrite32(0x00000f00, base + DSICTRL); |
9fd04fe3 GL |
304 | /* Interrupts not used, disable all */ |
305 | iowrite32(0, base + DSIINTE); | |
306 | /* DSI-Tx bias on */ | |
71b146c8 | 307 | iowrite32(0x00000001, base + PHYCTRL); |
9fd04fe3 | 308 | udelay(200); |
5e47431a KM |
309 | /* Deassert resets, power on */ |
310 | iowrite32(0x03070001, base + PHYCTRL); | |
9fd04fe3 GL |
311 | |
312 | /* setup l-bridge */ | |
313 | ||
314 | /* | |
315 | * Enable transmission of all packets, | |
316 | * transmit LPS after each HS packet completion | |
317 | */ | |
deaba190 | 318 | iowrite32(0x00000006, mipi->linkbase + DTCTR); |
9fd04fe3 | 319 | /* VSYNC width = 2 (<< 17) */ |
14bbb7c6 GL |
320 | iowrite32((ch->lcd_cfg[0].vsync_len << pdata->vsynw_offset) | |
321 | (pdata->clksrc << 16) | (pctype << 12) | datatype, | |
deaba190 | 322 | mipi->linkbase + VMCTR1); |
14bbb7c6 | 323 | |
9fd04fe3 GL |
324 | /* |
325 | * Non-burst mode with sync pulses: VSE and HSE are output, | |
326 | * HSA period allowed, no commands in LP | |
327 | */ | |
f832906a KM |
328 | vmctr2 = 0; |
329 | if (pdata->flags & SH_MIPI_DSI_VSEE) | |
330 | vmctr2 |= 1 << 23; | |
331 | if (pdata->flags & SH_MIPI_DSI_HSEE) | |
332 | vmctr2 |= 1 << 22; | |
333 | if (pdata->flags & SH_MIPI_DSI_HSAE) | |
334 | vmctr2 |= 1 << 21; | |
d07a9d2a KM |
335 | if (pdata->flags & SH_MIPI_DSI_BL2E) |
336 | vmctr2 |= 1 << 17; | |
14bbb7c6 | 337 | if (pdata->flags & SH_MIPI_DSI_HSABM) |
3c2a6599 | 338 | vmctr2 |= 1 << 5; |
32ba95c6 | 339 | if (pdata->flags & SH_MIPI_DSI_HBPBM) |
3c2a6599 | 340 | vmctr2 |= 1 << 4; |
f7b0af68 KM |
341 | if (pdata->flags & SH_MIPI_DSI_HFPBM) |
342 | vmctr2 |= 1 << 3; | |
14bbb7c6 GL |
343 | iowrite32(vmctr2, mipi->linkbase + VMCTR2); |
344 | ||
9fd04fe3 | 345 | /* |
08750617 KM |
346 | * VMLEN1 = RGBLEN | HSALEN |
347 | * | |
348 | * see | |
349 | * Video mode - Blanking Packet setting | |
9fd04fe3 | 350 | */ |
08750617 KM |
351 | top = linelength << 16; /* RGBLEN */ |
352 | bottom = 0x00000001; | |
353 | if (pdata->flags & SH_MIPI_DSI_HSABM) /* HSALEN */ | |
354 | bottom = (pdata->lane * ch->lcd_cfg[0].hsync_len) - 10; | |
355 | iowrite32(top | bottom , mipi->linkbase + VMLEN1); | |
356 | ||
357 | /* | |
358 | * VMLEN2 = HBPLEN | HFPLEN | |
359 | * | |
360 | * see | |
361 | * Video mode - Blanking Packet setting | |
362 | */ | |
363 | top = 0x00010000; | |
364 | bottom = 0x00000001; | |
365 | delay = 0; | |
366 | ||
a2e62971 KM |
367 | div = 1; /* HSbyteCLK is calculation base |
368 | * HS4divCLK = HSbyteCLK/2 | |
369 | * HS6divCLK is not supported for now */ | |
370 | if (pdata->flags & SH_MIPI_DSI_HS4divCLK) | |
371 | div = 2; | |
372 | ||
08750617 KM |
373 | if (pdata->flags & SH_MIPI_DSI_HFPBM) { /* HBPLEN */ |
374 | top = ch->lcd_cfg[0].hsync_len + ch->lcd_cfg[0].left_margin; | |
a2e62971 | 375 | top = ((pdata->lane * top / div) - 10) << 16; |
08750617 KM |
376 | } |
377 | if (pdata->flags & SH_MIPI_DSI_HBPBM) { /* HFPLEN */ | |
378 | bottom = ch->lcd_cfg[0].right_margin; | |
a2e62971 | 379 | bottom = (pdata->lane * bottom / div) - 12; |
08750617 KM |
380 | } |
381 | ||
382 | bpp = linelength / ch->lcd_cfg[0].xres; /* byte / pixel */ | |
a2e62971 | 383 | if ((pdata->lane / div) > bpp) { |
08750617 KM |
384 | tmp = ch->lcd_cfg[0].xres / bpp; /* output cycle */ |
385 | tmp = ch->lcd_cfg[0].xres - tmp; /* (input - output) cycle */ | |
386 | delay = (pdata->lane * tmp); | |
387 | } | |
388 | ||
389 | iowrite32(top | (bottom + delay) , mipi->linkbase + VMLEN2); | |
9fd04fe3 GL |
390 | |
391 | msleep(5); | |
392 | ||
393 | /* setup LCD panel */ | |
394 | ||
395 | /* cf. drivers/video/omap/lcd_mipid.c */ | |
396 | sh_mipi_dcs(ch->chan, MIPI_DCS_EXIT_SLEEP_MODE); | |
397 | msleep(120); | |
398 | /* | |
399 | * [7] - Page Address Mode | |
400 | * [6] - Column Address Mode | |
401 | * [5] - Page / Column Address Mode | |
402 | * [4] - Display Device Line Refresh Order | |
403 | * [3] - RGB/BGR Order | |
404 | * [2] - Display Data Latch Data Order | |
405 | * [1] - Flip Horizontal | |
406 | * [0] - Flip Vertical | |
407 | */ | |
408 | sh_mipi_dcs_param(ch->chan, MIPI_DCS_SET_ADDRESS_MODE, 0x00); | |
409 | /* cf. set_data_lines() */ | |
410 | sh_mipi_dcs_param(ch->chan, MIPI_DCS_SET_PIXEL_FORMAT, | |
411 | pixfmt << 4); | |
412 | sh_mipi_dcs(ch->chan, MIPI_DCS_SET_DISPLAY_ON); | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | static int __init sh_mipi_probe(struct platform_device *pdev) | |
418 | { | |
419 | struct sh_mipi *mipi; | |
420 | struct sh_mipi_dsi_info *pdata = pdev->dev.platform_data; | |
421 | struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
deaba190 | 422 | struct resource *res2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
9fd04fe3 GL |
423 | unsigned long rate, f_current; |
424 | int idx = pdev->id, ret; | |
9fd04fe3 | 425 | |
deaba190 | 426 | if (!res || !res2 || idx >= ARRAY_SIZE(mipi_dsi) || !pdata) |
9fd04fe3 GL |
427 | return -ENODEV; |
428 | ||
5e47431a KM |
429 | if (!pdata->set_dot_clock) |
430 | return -EINVAL; | |
431 | ||
9fd04fe3 GL |
432 | mutex_lock(&array_lock); |
433 | if (idx < 0) | |
434 | for (idx = 0; idx < ARRAY_SIZE(mipi_dsi) && mipi_dsi[idx]; idx++) | |
435 | ; | |
436 | ||
437 | if (idx == ARRAY_SIZE(mipi_dsi)) { | |
438 | ret = -EBUSY; | |
439 | goto efindslot; | |
440 | } | |
441 | ||
442 | mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); | |
443 | if (!mipi) { | |
444 | ret = -ENOMEM; | |
445 | goto ealloc; | |
446 | } | |
447 | ||
448 | if (!request_mem_region(res->start, resource_size(res), pdev->name)) { | |
449 | dev_err(&pdev->dev, "MIPI register region already claimed\n"); | |
450 | ret = -EBUSY; | |
451 | goto ereqreg; | |
452 | } | |
453 | ||
454 | mipi->base = ioremap(res->start, resource_size(res)); | |
455 | if (!mipi->base) { | |
456 | ret = -ENOMEM; | |
457 | goto emap; | |
458 | } | |
459 | ||
deaba190 MD |
460 | if (!request_mem_region(res2->start, resource_size(res2), pdev->name)) { |
461 | dev_err(&pdev->dev, "MIPI register region 2 already claimed\n"); | |
462 | ret = -EBUSY; | |
463 | goto ereqreg2; | |
464 | } | |
465 | ||
466 | mipi->linkbase = ioremap(res2->start, resource_size(res2)); | |
467 | if (!mipi->linkbase) { | |
468 | ret = -ENOMEM; | |
469 | goto emap2; | |
470 | } | |
471 | ||
236782a5 GL |
472 | mipi->dev = &pdev->dev; |
473 | ||
9fd04fe3 GL |
474 | mipi->dsit_clk = clk_get(&pdev->dev, "dsit_clk"); |
475 | if (IS_ERR(mipi->dsit_clk)) { | |
476 | ret = PTR_ERR(mipi->dsit_clk); | |
477 | goto eclktget; | |
478 | } | |
479 | ||
480 | f_current = clk_get_rate(mipi->dsit_clk); | |
481 | /* 80MHz required by the datasheet */ | |
482 | rate = clk_round_rate(mipi->dsit_clk, 80000000); | |
483 | if (rate > 0 && rate != f_current) | |
484 | ret = clk_set_rate(mipi->dsit_clk, rate); | |
485 | else | |
486 | ret = rate; | |
487 | if (ret < 0) | |
488 | goto esettrate; | |
489 | ||
490 | dev_dbg(&pdev->dev, "DSI-T clk %lu -> %lu\n", f_current, rate); | |
491 | ||
9fd04fe3 GL |
492 | ret = clk_enable(mipi->dsit_clk); |
493 | if (ret < 0) | |
494 | goto eclkton; | |
495 | ||
9fd04fe3 GL |
496 | mipi_dsi[idx] = mipi; |
497 | ||
236782a5 GL |
498 | pm_runtime_enable(&pdev->dev); |
499 | pm_runtime_resume(&pdev->dev); | |
500 | ||
9fd04fe3 GL |
501 | ret = sh_mipi_setup(mipi, pdata); |
502 | if (ret < 0) | |
503 | goto emipisetup; | |
504 | ||
5e47431a KM |
505 | ret = pdata->set_dot_clock(pdev, mipi->base, 1); |
506 | if (ret < 0) | |
507 | goto emipisetup; | |
508 | ||
9fd04fe3 GL |
509 | mutex_unlock(&array_lock); |
510 | platform_set_drvdata(pdev, mipi); | |
511 | ||
6722a401 MD |
512 | /* Save original LCDC callbacks */ |
513 | mipi->next_board_data = pdata->lcd_chan->board_cfg.board_data; | |
514 | mipi->next_display_on = pdata->lcd_chan->board_cfg.display_on; | |
515 | mipi->next_display_off = pdata->lcd_chan->board_cfg.display_off; | |
516 | ||
9fd04fe3 GL |
517 | /* Set up LCDC callbacks */ |
518 | pdata->lcd_chan->board_cfg.board_data = mipi; | |
519 | pdata->lcd_chan->board_cfg.display_on = mipi_display_on; | |
520 | pdata->lcd_chan->board_cfg.display_off = mipi_display_off; | |
236782a5 | 521 | pdata->lcd_chan->board_cfg.owner = THIS_MODULE; |
9fd04fe3 GL |
522 | |
523 | return 0; | |
524 | ||
525 | emipisetup: | |
526 | mipi_dsi[idx] = NULL; | |
236782a5 | 527 | pm_runtime_disable(&pdev->dev); |
9fd04fe3 GL |
528 | clk_disable(mipi->dsit_clk); |
529 | eclkton: | |
9fd04fe3 GL |
530 | esettrate: |
531 | clk_put(mipi->dsit_clk); | |
532 | eclktget: | |
deaba190 MD |
533 | iounmap(mipi->linkbase); |
534 | emap2: | |
535 | release_mem_region(res2->start, resource_size(res2)); | |
536 | ereqreg2: | |
9fd04fe3 GL |
537 | iounmap(mipi->base); |
538 | emap: | |
539 | release_mem_region(res->start, resource_size(res)); | |
540 | ereqreg: | |
541 | kfree(mipi); | |
542 | ealloc: | |
543 | efindslot: | |
544 | mutex_unlock(&array_lock); | |
545 | ||
546 | return ret; | |
547 | } | |
548 | ||
549 | static int __exit sh_mipi_remove(struct platform_device *pdev) | |
550 | { | |
551 | struct sh_mipi_dsi_info *pdata = pdev->dev.platform_data; | |
552 | struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
deaba190 | 553 | struct resource *res2 = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
9fd04fe3 GL |
554 | struct sh_mipi *mipi = platform_get_drvdata(pdev); |
555 | int i, ret; | |
556 | ||
557 | mutex_lock(&array_lock); | |
558 | ||
559 | for (i = 0; i < ARRAY_SIZE(mipi_dsi) && mipi_dsi[i] != mipi; i++) | |
560 | ; | |
561 | ||
562 | if (i == ARRAY_SIZE(mipi_dsi)) { | |
563 | ret = -EINVAL; | |
564 | } else { | |
565 | ret = 0; | |
566 | mipi_dsi[i] = NULL; | |
567 | } | |
568 | ||
569 | mutex_unlock(&array_lock); | |
570 | ||
571 | if (ret < 0) | |
572 | return ret; | |
573 | ||
236782a5 | 574 | pdata->lcd_chan->board_cfg.owner = NULL; |
9fd04fe3 GL |
575 | pdata->lcd_chan->board_cfg.display_on = NULL; |
576 | pdata->lcd_chan->board_cfg.display_off = NULL; | |
577 | pdata->lcd_chan->board_cfg.board_data = NULL; | |
578 | ||
236782a5 | 579 | pm_runtime_disable(&pdev->dev); |
9fd04fe3 GL |
580 | clk_disable(mipi->dsit_clk); |
581 | clk_put(mipi->dsit_clk); | |
5e47431a KM |
582 | pdata->set_dot_clock(pdev, mipi->base, 0); |
583 | ||
deaba190 MD |
584 | iounmap(mipi->linkbase); |
585 | if (res2) | |
586 | release_mem_region(res2->start, resource_size(res2)); | |
9fd04fe3 GL |
587 | iounmap(mipi->base); |
588 | if (res) | |
589 | release_mem_region(res->start, resource_size(res)); | |
590 | platform_set_drvdata(pdev, NULL); | |
591 | kfree(mipi); | |
592 | ||
593 | return 0; | |
594 | } | |
595 | ||
596 | static struct platform_driver sh_mipi_driver = { | |
597 | .remove = __exit_p(sh_mipi_remove), | |
598 | .shutdown = sh_mipi_shutdown, | |
599 | .driver = { | |
600 | .name = "sh-mipi-dsi", | |
601 | }, | |
602 | }; | |
603 | ||
604 | static int __init sh_mipi_init(void) | |
605 | { | |
606 | return platform_driver_probe(&sh_mipi_driver, sh_mipi_probe); | |
607 | } | |
608 | module_init(sh_mipi_init); | |
609 | ||
610 | static void __exit sh_mipi_exit(void) | |
611 | { | |
612 | platform_driver_unregister(&sh_mipi_driver); | |
613 | } | |
614 | module_exit(sh_mipi_exit); | |
615 | ||
616 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | |
617 | MODULE_DESCRIPTION("SuperH / ARM-shmobile MIPI DSI driver"); | |
618 | MODULE_LICENSE("GPL v2"); |