Commit | Line | Data |
---|---|---|
9cfe4a93 MH |
1 | /* |
2 | * Blackfin LCD Framebuffer driver SHARP LQ035Q1DH02 | |
3 | * | |
4 | * Copyright 2008-2009 Analog Devices Inc. | |
5 | * Licensed under the GPL-2 or later. | |
6 | */ | |
7 | ||
8 | #define DRIVER_NAME "bfin-lq035q1" | |
9 | #define pr_fmt(fmt) DRIVER_NAME ": " fmt | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/string.h> | |
15 | #include <linux/fb.h> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
9cfe4a93 MH |
17 | #include <linux/init.h> |
18 | #include <linux/types.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/backlight.h> | |
22 | #include <linux/lcd.h> | |
23 | #include <linux/dma-mapping.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <linux/spi/spi.h> | |
9cfe4a93 MH |
26 | |
27 | #include <asm/blackfin.h> | |
28 | #include <asm/irq.h> | |
29 | #include <asm/dma.h> | |
30 | #include <asm/portmux.h> | |
31 | #include <asm/gptimers.h> | |
32 | ||
33 | #include <asm/bfin-lq035q1.h> | |
34 | ||
35 | #if defined(BF533_FAMILY) || defined(BF538_FAMILY) | |
36 | #define TIMER_HSYNC_id TIMER1_id | |
37 | #define TIMER_HSYNCbit TIMER1bit | |
38 | #define TIMER_HSYNC_STATUS_TRUN TIMER_STATUS_TRUN1 | |
39 | #define TIMER_HSYNC_STATUS_TIMIL TIMER_STATUS_TIMIL1 | |
40 | #define TIMER_HSYNC_STATUS_TOVF TIMER_STATUS_TOVF1 | |
41 | ||
42 | #define TIMER_VSYNC_id TIMER2_id | |
43 | #define TIMER_VSYNCbit TIMER2bit | |
44 | #define TIMER_VSYNC_STATUS_TRUN TIMER_STATUS_TRUN2 | |
45 | #define TIMER_VSYNC_STATUS_TIMIL TIMER_STATUS_TIMIL2 | |
46 | #define TIMER_VSYNC_STATUS_TOVF TIMER_STATUS_TOVF2 | |
47 | #else | |
48 | #define TIMER_HSYNC_id TIMER0_id | |
49 | #define TIMER_HSYNCbit TIMER0bit | |
50 | #define TIMER_HSYNC_STATUS_TRUN TIMER_STATUS_TRUN0 | |
51 | #define TIMER_HSYNC_STATUS_TIMIL TIMER_STATUS_TIMIL0 | |
52 | #define TIMER_HSYNC_STATUS_TOVF TIMER_STATUS_TOVF0 | |
53 | ||
54 | #define TIMER_VSYNC_id TIMER1_id | |
55 | #define TIMER_VSYNCbit TIMER1bit | |
56 | #define TIMER_VSYNC_STATUS_TRUN TIMER_STATUS_TRUN1 | |
57 | #define TIMER_VSYNC_STATUS_TIMIL TIMER_STATUS_TIMIL1 | |
58 | #define TIMER_VSYNC_STATUS_TOVF TIMER_STATUS_TOVF1 | |
59 | #endif | |
60 | ||
61 | #define LCD_X_RES 320 /* Horizontal Resolution */ | |
62 | #define LCD_Y_RES 240 /* Vertical Resolution */ | |
63 | #define DMA_BUS_SIZE 16 | |
fbd65e0e | 64 | #define U_LINE 4 /* Blanking Lines */ |
9cfe4a93 | 65 | |
9cfe4a93 MH |
66 | |
67 | /* Interface 16/18-bit TFT over an 8-bit wide PPI using a small Programmable Logic Device (CPLD) | |
68 | * http://blackfin.uclinux.org/gf/project/stamp/frs/?action=FrsReleaseBrowse&frs_package_id=165 | |
69 | */ | |
70 | ||
9cfe4a93 MH |
71 | |
72 | #define BFIN_LCD_NBR_PALETTE_ENTRIES 256 | |
73 | ||
74 | #define PPI_TX_MODE 0x2 | |
75 | #define PPI_XFER_TYPE_11 0xC | |
76 | #define PPI_PORT_CFG_01 0x10 | |
77 | #define PPI_POLS_1 0x8000 | |
78 | ||
9cfe4a93 MH |
79 | #define LQ035_INDEX 0x74 |
80 | #define LQ035_DATA 0x76 | |
81 | ||
82 | #define LQ035_DRIVER_OUTPUT_CTL 0x1 | |
83 | #define LQ035_SHUT_CTL 0x11 | |
84 | ||
85 | #define LQ035_DRIVER_OUTPUT_MASK (LQ035_LR | LQ035_TB | LQ035_BGR | LQ035_REV) | |
86 | #define LQ035_DRIVER_OUTPUT_DEFAULT (0x2AEF & ~LQ035_DRIVER_OUTPUT_MASK) | |
87 | ||
88 | #define LQ035_SHUT (1 << 0) /* Shutdown */ | |
89 | #define LQ035_ON (0 << 0) /* Shutdown */ | |
90 | ||
91 | struct bfin_lq035q1fb_info { | |
92 | struct fb_info *fb; | |
93 | struct device *dev; | |
94 | struct spi_driver spidrv; | |
95 | struct bfin_lq035q1fb_disp_info *disp_info; | |
96 | unsigned char *fb_buffer; /* RGB Buffer */ | |
97 | dma_addr_t dma_handle; | |
98 | int lq035_open_cnt; | |
99 | int irq; | |
100 | spinlock_t lock; /* lock */ | |
101 | u32 pseudo_pal[16]; | |
fbd65e0e MH |
102 | |
103 | u32 lcd_bpp; | |
104 | u32 h_actpix; | |
105 | u32 h_period; | |
106 | u32 h_pulse; | |
107 | u32 h_start; | |
108 | u32 v_lines; | |
109 | u32 v_pulse; | |
110 | u32 v_period; | |
9cfe4a93 MH |
111 | }; |
112 | ||
113 | static int nocursor; | |
114 | module_param(nocursor, int, 0644); | |
115 | MODULE_PARM_DESC(nocursor, "cursor enable/disable"); | |
116 | ||
117 | struct spi_control { | |
118 | unsigned short mode; | |
119 | }; | |
120 | ||
121 | static int lq035q1_control(struct spi_device *spi, unsigned char reg, unsigned short value) | |
122 | { | |
123 | int ret; | |
124 | u8 regs[3] = { LQ035_INDEX, 0, 0 }; | |
125 | u8 dat[3] = { LQ035_DATA, 0, 0 }; | |
126 | ||
127 | if (!spi) | |
128 | return -ENODEV; | |
129 | ||
130 | regs[2] = reg; | |
131 | dat[1] = value >> 8; | |
132 | dat[2] = value & 0xFF; | |
133 | ||
134 | ret = spi_write(spi, regs, ARRAY_SIZE(regs)); | |
135 | ret |= spi_write(spi, dat, ARRAY_SIZE(dat)); | |
136 | return ret; | |
137 | } | |
138 | ||
139 | static int __devinit lq035q1_spidev_probe(struct spi_device *spi) | |
140 | { | |
141 | int ret; | |
142 | struct spi_control *ctl; | |
143 | struct bfin_lq035q1fb_info *info = container_of(spi->dev.driver, | |
144 | struct bfin_lq035q1fb_info, | |
145 | spidrv.driver); | |
146 | ||
147 | ctl = kzalloc(sizeof(*ctl), GFP_KERNEL); | |
148 | ||
149 | if (!ctl) | |
150 | return -ENOMEM; | |
151 | ||
152 | ctl->mode = (info->disp_info->mode & | |
153 | LQ035_DRIVER_OUTPUT_MASK) | LQ035_DRIVER_OUTPUT_DEFAULT; | |
154 | ||
155 | ret = lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_ON); | |
156 | ret |= lq035q1_control(spi, LQ035_DRIVER_OUTPUT_CTL, ctl->mode); | |
a8c908d3 JL |
157 | if (ret) { |
158 | kfree(ctl); | |
9cfe4a93 | 159 | return ret; |
a8c908d3 | 160 | } |
9cfe4a93 MH |
161 | |
162 | spi_set_drvdata(spi, ctl); | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static int lq035q1_spidev_remove(struct spi_device *spi) | |
168 | { | |
169 | return lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_SHUT); | |
170 | } | |
171 | ||
172 | #ifdef CONFIG_PM | |
173 | static int lq035q1_spidev_suspend(struct spi_device *spi, pm_message_t state) | |
174 | { | |
175 | return lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_SHUT); | |
176 | } | |
177 | ||
178 | static int lq035q1_spidev_resume(struct spi_device *spi) | |
179 | { | |
180 | int ret; | |
181 | struct spi_control *ctl = spi_get_drvdata(spi); | |
182 | ||
183 | ret = lq035q1_control(spi, LQ035_DRIVER_OUTPUT_CTL, ctl->mode); | |
184 | if (ret) | |
185 | return ret; | |
186 | ||
187 | return lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_ON); | |
188 | } | |
189 | #else | |
190 | # define lq035q1_spidev_suspend NULL | |
191 | # define lq035q1_spidev_resume NULL | |
192 | #endif | |
193 | ||
194 | /* Power down all displays on reboot, poweroff or halt */ | |
195 | static void lq035q1_spidev_shutdown(struct spi_device *spi) | |
196 | { | |
197 | lq035q1_control(spi, LQ035_SHUT_CTL, LQ035_SHUT); | |
198 | } | |
199 | ||
200 | static int lq035q1_backlight(struct bfin_lq035q1fb_info *info, unsigned arg) | |
201 | { | |
202 | if (info->disp_info->use_bl) | |
203 | gpio_set_value(info->disp_info->gpio_bl, arg); | |
204 | ||
205 | return 0; | |
206 | } | |
207 | ||
fbd65e0e MH |
208 | static int bfin_lq035q1_calc_timing(struct bfin_lq035q1fb_info *fbi) |
209 | { | |
210 | unsigned long clocks_per_pix, cpld_pipeline_delay_cor; | |
211 | ||
212 | /* | |
213 | * Interface 16/18-bit TFT over an 8-bit wide PPI using a small | |
214 | * Programmable Logic Device (CPLD) | |
215 | * http://blackfin.uclinux.org/gf/project/stamp/frs/?action=FrsReleaseBrowse&frs_package_id=165 | |
216 | */ | |
217 | ||
218 | switch (fbi->disp_info->ppi_mode) { | |
219 | case USE_RGB565_16_BIT_PPI: | |
220 | fbi->lcd_bpp = 16; | |
221 | clocks_per_pix = 1; | |
222 | cpld_pipeline_delay_cor = 0; | |
223 | break; | |
224 | case USE_RGB565_8_BIT_PPI: | |
225 | fbi->lcd_bpp = 16; | |
226 | clocks_per_pix = 2; | |
227 | cpld_pipeline_delay_cor = 3; | |
228 | break; | |
229 | case USE_RGB888_8_BIT_PPI: | |
230 | fbi->lcd_bpp = 24; | |
231 | clocks_per_pix = 3; | |
232 | cpld_pipeline_delay_cor = 5; | |
233 | break; | |
234 | default: | |
235 | return -EINVAL; | |
236 | } | |
237 | ||
238 | /* | |
239 | * HS and VS timing parameters (all in number of PPI clk ticks) | |
240 | */ | |
241 | ||
242 | fbi->h_actpix = (LCD_X_RES * clocks_per_pix); /* active horizontal pixel */ | |
243 | fbi->h_period = (336 * clocks_per_pix); /* HS period */ | |
244 | fbi->h_pulse = (2 * clocks_per_pix); /* HS pulse width */ | |
245 | fbi->h_start = (7 * clocks_per_pix + cpld_pipeline_delay_cor); /* first valid pixel */ | |
246 | ||
247 | fbi->v_lines = (LCD_Y_RES + U_LINE); /* total vertical lines */ | |
248 | fbi->v_pulse = (2 * clocks_per_pix); /* VS pulse width (1-5 H_PERIODs) */ | |
249 | fbi->v_period = (fbi->h_period * fbi->v_lines); /* VS period */ | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
9cfe4a93 MH |
254 | static void bfin_lq035q1_config_ppi(struct bfin_lq035q1fb_info *fbi) |
255 | { | |
fbd65e0e MH |
256 | unsigned ppi_pmode; |
257 | ||
258 | if (fbi->disp_info->ppi_mode == USE_RGB565_16_BIT_PPI) | |
259 | ppi_pmode = DLEN_16; | |
260 | else | |
261 | ppi_pmode = (DLEN_8 | PACK_EN); | |
262 | ||
263 | bfin_write_PPI_DELAY(fbi->h_start); | |
264 | bfin_write_PPI_COUNT(fbi->h_actpix - 1); | |
265 | bfin_write_PPI_FRAME(fbi->v_lines); | |
9cfe4a93 MH |
266 | |
267 | bfin_write_PPI_CONTROL(PPI_TX_MODE | /* output mode , PORT_DIR */ | |
268 | PPI_XFER_TYPE_11 | /* sync mode XFR_TYPE */ | |
269 | PPI_PORT_CFG_01 | /* two frame sync PORT_CFG */ | |
fbd65e0e | 270 | ppi_pmode | /* 8/16 bit data length / PACK_EN? */ |
9cfe4a93 MH |
271 | PPI_POLS_1); /* faling edge syncs POLS */ |
272 | } | |
273 | ||
274 | static inline void bfin_lq035q1_disable_ppi(void) | |
275 | { | |
276 | bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN); | |
277 | } | |
278 | ||
279 | static inline void bfin_lq035q1_enable_ppi(void) | |
280 | { | |
281 | bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN); | |
282 | } | |
283 | ||
284 | static void bfin_lq035q1_start_timers(void) | |
285 | { | |
286 | enable_gptimers(TIMER_VSYNCbit | TIMER_HSYNCbit); | |
287 | } | |
288 | ||
289 | static void bfin_lq035q1_stop_timers(void) | |
290 | { | |
291 | disable_gptimers(TIMER_HSYNCbit | TIMER_VSYNCbit); | |
292 | ||
293 | set_gptimer_status(0, TIMER_HSYNC_STATUS_TRUN | TIMER_VSYNC_STATUS_TRUN | | |
294 | TIMER_HSYNC_STATUS_TIMIL | TIMER_VSYNC_STATUS_TIMIL | | |
295 | TIMER_HSYNC_STATUS_TOVF | TIMER_VSYNC_STATUS_TOVF); | |
296 | ||
297 | } | |
298 | ||
fbd65e0e | 299 | static void bfin_lq035q1_init_timers(struct bfin_lq035q1fb_info *fbi) |
9cfe4a93 MH |
300 | { |
301 | ||
302 | bfin_lq035q1_stop_timers(); | |
303 | ||
fbd65e0e MH |
304 | set_gptimer_period(TIMER_HSYNC_id, fbi->h_period); |
305 | set_gptimer_pwidth(TIMER_HSYNC_id, fbi->h_pulse); | |
9cfe4a93 MH |
306 | set_gptimer_config(TIMER_HSYNC_id, TIMER_MODE_PWM | TIMER_PERIOD_CNT | |
307 | TIMER_TIN_SEL | TIMER_CLK_SEL| | |
308 | TIMER_EMU_RUN); | |
309 | ||
fbd65e0e MH |
310 | set_gptimer_period(TIMER_VSYNC_id, fbi->v_period); |
311 | set_gptimer_pwidth(TIMER_VSYNC_id, fbi->v_pulse); | |
9cfe4a93 MH |
312 | set_gptimer_config(TIMER_VSYNC_id, TIMER_MODE_PWM | TIMER_PERIOD_CNT | |
313 | TIMER_TIN_SEL | TIMER_CLK_SEL | | |
314 | TIMER_EMU_RUN); | |
315 | ||
316 | } | |
317 | ||
318 | static void bfin_lq035q1_config_dma(struct bfin_lq035q1fb_info *fbi) | |
319 | { | |
320 | ||
fbd65e0e | 321 | |
9cfe4a93 MH |
322 | set_dma_config(CH_PPI, |
323 | set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO, | |
324 | INTR_DISABLE, DIMENSION_2D, | |
325 | DATA_SIZE_16, | |
326 | DMA_NOSYNC_KEEP_DMA_BUF)); | |
fbd65e0e | 327 | set_dma_x_count(CH_PPI, (LCD_X_RES * fbi->lcd_bpp) / DMA_BUS_SIZE); |
9cfe4a93 | 328 | set_dma_x_modify(CH_PPI, DMA_BUS_SIZE / 8); |
fbd65e0e | 329 | set_dma_y_count(CH_PPI, fbi->v_lines); |
9cfe4a93 MH |
330 | |
331 | set_dma_y_modify(CH_PPI, DMA_BUS_SIZE / 8); | |
332 | set_dma_start_addr(CH_PPI, (unsigned long)fbi->fb_buffer); | |
333 | ||
334 | } | |
335 | ||
9cfe4a93 MH |
336 | static const u16 ppi0_req_16[] = {P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, |
337 | P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, | |
338 | P_PPI0_D3, P_PPI0_D4, P_PPI0_D5, | |
339 | P_PPI0_D6, P_PPI0_D7, P_PPI0_D8, | |
340 | P_PPI0_D9, P_PPI0_D10, P_PPI0_D11, | |
341 | P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, | |
342 | P_PPI0_D15, 0}; | |
fbd65e0e MH |
343 | |
344 | static const u16 ppi0_req_8[] = {P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, | |
9cfe4a93 MH |
345 | P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, |
346 | P_PPI0_D3, P_PPI0_D4, P_PPI0_D5, | |
347 | P_PPI0_D6, P_PPI0_D7, 0}; | |
9cfe4a93 | 348 | |
fbd65e0e | 349 | static inline void bfin_lq035q1_free_ports(unsigned ppi16) |
9cfe4a93 | 350 | { |
fbd65e0e MH |
351 | if (ppi16) |
352 | peripheral_free_list(ppi0_req_16); | |
353 | else | |
354 | peripheral_free_list(ppi0_req_8); | |
355 | ||
9cfe4a93 MH |
356 | if (ANOMALY_05000400) |
357 | gpio_free(P_IDENT(P_PPI0_FS3)); | |
358 | } | |
359 | ||
fbd65e0e MH |
360 | static int __devinit bfin_lq035q1_request_ports(struct platform_device *pdev, |
361 | unsigned ppi16) | |
9cfe4a93 | 362 | { |
fbd65e0e | 363 | int ret; |
9cfe4a93 MH |
364 | /* ANOMALY_05000400 - PPI Does Not Start Properly In Specific Mode: |
365 | * Drive PPI_FS3 Low | |
366 | */ | |
367 | if (ANOMALY_05000400) { | |
f8bd4934 JH |
368 | int ret = gpio_request_one(P_IDENT(P_PPI0_FS3), |
369 | GPIOF_OUT_INIT_LOW, "PPI_FS3"); | |
9cfe4a93 MH |
370 | if (ret) |
371 | return ret; | |
9cfe4a93 MH |
372 | } |
373 | ||
fbd65e0e MH |
374 | if (ppi16) |
375 | ret = peripheral_request_list(ppi0_req_16, DRIVER_NAME); | |
376 | else | |
377 | ret = peripheral_request_list(ppi0_req_8, DRIVER_NAME); | |
378 | ||
379 | if (ret) { | |
9cfe4a93 MH |
380 | dev_err(&pdev->dev, "requesting peripherals failed\n"); |
381 | return -EFAULT; | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | static int bfin_lq035q1_fb_open(struct fb_info *info, int user) | |
388 | { | |
389 | struct bfin_lq035q1fb_info *fbi = info->par; | |
390 | ||
391 | spin_lock(&fbi->lock); | |
392 | fbi->lq035_open_cnt++; | |
393 | ||
394 | if (fbi->lq035_open_cnt <= 1) { | |
395 | ||
396 | bfin_lq035q1_disable_ppi(); | |
397 | SSYNC(); | |
398 | ||
399 | bfin_lq035q1_config_dma(fbi); | |
400 | bfin_lq035q1_config_ppi(fbi); | |
fbd65e0e | 401 | bfin_lq035q1_init_timers(fbi); |
9cfe4a93 MH |
402 | |
403 | /* start dma */ | |
404 | enable_dma(CH_PPI); | |
405 | bfin_lq035q1_enable_ppi(); | |
406 | bfin_lq035q1_start_timers(); | |
407 | lq035q1_backlight(fbi, 1); | |
408 | } | |
409 | ||
410 | spin_unlock(&fbi->lock); | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | static int bfin_lq035q1_fb_release(struct fb_info *info, int user) | |
416 | { | |
417 | struct bfin_lq035q1fb_info *fbi = info->par; | |
418 | ||
419 | spin_lock(&fbi->lock); | |
420 | ||
421 | fbi->lq035_open_cnt--; | |
422 | ||
423 | if (fbi->lq035_open_cnt <= 0) { | |
424 | lq035q1_backlight(fbi, 0); | |
425 | bfin_lq035q1_disable_ppi(); | |
426 | SSYNC(); | |
427 | disable_dma(CH_PPI); | |
428 | bfin_lq035q1_stop_timers(); | |
429 | } | |
430 | ||
431 | spin_unlock(&fbi->lock); | |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
436 | static int bfin_lq035q1_fb_check_var(struct fb_var_screeninfo *var, | |
437 | struct fb_info *info) | |
438 | { | |
fbd65e0e MH |
439 | struct bfin_lq035q1fb_info *fbi = info->par; |
440 | ||
441 | if (var->bits_per_pixel == fbi->lcd_bpp) { | |
9cfe4a93 MH |
442 | var->red.offset = info->var.red.offset; |
443 | var->green.offset = info->var.green.offset; | |
444 | var->blue.offset = info->var.blue.offset; | |
445 | var->red.length = info->var.red.length; | |
446 | var->green.length = info->var.green.length; | |
447 | var->blue.length = info->var.blue.length; | |
448 | var->transp.offset = 0; | |
449 | var->transp.length = 0; | |
450 | var->transp.msb_right = 0; | |
451 | var->red.msb_right = 0; | |
452 | var->green.msb_right = 0; | |
453 | var->blue.msb_right = 0; | |
fbd65e0e | 454 | } else { |
9cfe4a93 MH |
455 | pr_debug("%s: depth not supported: %u BPP\n", __func__, |
456 | var->bits_per_pixel); | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | if (info->var.xres != var->xres || info->var.yres != var->yres || | |
461 | info->var.xres_virtual != var->xres_virtual || | |
462 | info->var.yres_virtual != var->yres_virtual) { | |
463 | pr_debug("%s: Resolution not supported: X%u x Y%u \n", | |
464 | __func__, var->xres, var->yres); | |
465 | return -EINVAL; | |
466 | } | |
467 | ||
468 | /* | |
469 | * Memory limit | |
470 | */ | |
471 | ||
472 | if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) { | |
473 | pr_debug("%s: Memory Limit requested yres_virtual = %u\n", | |
474 | __func__, var->yres_virtual); | |
475 | return -ENOMEM; | |
476 | } | |
477 | ||
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | int bfin_lq035q1_fb_cursor(struct fb_info *info, struct fb_cursor *cursor) | |
483 | { | |
484 | if (nocursor) | |
485 | return 0; | |
486 | else | |
487 | return -EINVAL; /* just to force soft_cursor() call */ | |
488 | } | |
489 | ||
490 | static int bfin_lq035q1_fb_setcolreg(u_int regno, u_int red, u_int green, | |
491 | u_int blue, u_int transp, | |
492 | struct fb_info *info) | |
493 | { | |
494 | if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES) | |
495 | return -EINVAL; | |
496 | ||
497 | if (info->var.grayscale) { | |
498 | /* grayscale = 0.30*R + 0.59*G + 0.11*B */ | |
499 | red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; | |
500 | } | |
501 | ||
502 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { | |
503 | ||
504 | u32 value; | |
505 | /* Place color in the pseudopalette */ | |
506 | if (regno > 16) | |
507 | return -EINVAL; | |
508 | ||
509 | red >>= (16 - info->var.red.length); | |
510 | green >>= (16 - info->var.green.length); | |
511 | blue >>= (16 - info->var.blue.length); | |
512 | ||
513 | value = (red << info->var.red.offset) | | |
514 | (green << info->var.green.offset) | | |
515 | (blue << info->var.blue.offset); | |
516 | value &= 0xFFFFFF; | |
517 | ||
518 | ((u32 *) (info->pseudo_palette))[regno] = value; | |
519 | ||
520 | } | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | static struct fb_ops bfin_lq035q1_fb_ops = { | |
526 | .owner = THIS_MODULE, | |
527 | .fb_open = bfin_lq035q1_fb_open, | |
528 | .fb_release = bfin_lq035q1_fb_release, | |
529 | .fb_check_var = bfin_lq035q1_fb_check_var, | |
530 | .fb_fillrect = cfb_fillrect, | |
531 | .fb_copyarea = cfb_copyarea, | |
532 | .fb_imageblit = cfb_imageblit, | |
533 | .fb_cursor = bfin_lq035q1_fb_cursor, | |
534 | .fb_setcolreg = bfin_lq035q1_fb_setcolreg, | |
535 | }; | |
536 | ||
537 | static irqreturn_t bfin_lq035q1_irq_error(int irq, void *dev_id) | |
538 | { | |
539 | /*struct bfin_lq035q1fb_info *info = (struct bfin_lq035q1fb_info *)dev_id;*/ | |
540 | ||
541 | u16 status = bfin_read_PPI_STATUS(); | |
542 | bfin_write_PPI_STATUS(-1); | |
543 | ||
544 | if (status) { | |
545 | bfin_lq035q1_disable_ppi(); | |
546 | disable_dma(CH_PPI); | |
547 | ||
548 | /* start dma */ | |
549 | enable_dma(CH_PPI); | |
550 | bfin_lq035q1_enable_ppi(); | |
551 | bfin_write_PPI_STATUS(-1); | |
552 | } | |
553 | ||
554 | return IRQ_HANDLED; | |
555 | } | |
556 | ||
557 | static int __devinit bfin_lq035q1_probe(struct platform_device *pdev) | |
558 | { | |
559 | struct bfin_lq035q1fb_info *info; | |
560 | struct fb_info *fbinfo; | |
fbd65e0e | 561 | u32 active_video_mem_offset; |
9cfe4a93 MH |
562 | int ret; |
563 | ||
564 | ret = request_dma(CH_PPI, DRIVER_NAME"_CH_PPI"); | |
565 | if (ret < 0) { | |
566 | dev_err(&pdev->dev, "PPI DMA unavailable\n"); | |
567 | goto out1; | |
568 | } | |
569 | ||
570 | fbinfo = framebuffer_alloc(sizeof(*info), &pdev->dev); | |
571 | if (!fbinfo) { | |
572 | ret = -ENOMEM; | |
573 | goto out2; | |
574 | } | |
575 | ||
576 | info = fbinfo->par; | |
577 | info->fb = fbinfo; | |
578 | info->dev = &pdev->dev; | |
579 | ||
580 | info->disp_info = pdev->dev.platform_data; | |
581 | ||
582 | platform_set_drvdata(pdev, fbinfo); | |
583 | ||
fbd65e0e MH |
584 | ret = bfin_lq035q1_calc_timing(info); |
585 | if (ret < 0) { | |
586 | dev_err(&pdev->dev, "Failed PPI Mode\n"); | |
587 | goto out3; | |
588 | } | |
589 | ||
9cfe4a93 MH |
590 | strcpy(fbinfo->fix.id, DRIVER_NAME); |
591 | ||
592 | fbinfo->fix.type = FB_TYPE_PACKED_PIXELS; | |
593 | fbinfo->fix.type_aux = 0; | |
594 | fbinfo->fix.xpanstep = 0; | |
595 | fbinfo->fix.ypanstep = 0; | |
596 | fbinfo->fix.ywrapstep = 0; | |
597 | fbinfo->fix.accel = FB_ACCEL_NONE; | |
598 | fbinfo->fix.visual = FB_VISUAL_TRUECOLOR; | |
599 | ||
600 | fbinfo->var.nonstd = 0; | |
601 | fbinfo->var.activate = FB_ACTIVATE_NOW; | |
602 | fbinfo->var.height = -1; | |
603 | fbinfo->var.width = -1; | |
604 | fbinfo->var.accel_flags = 0; | |
605 | fbinfo->var.vmode = FB_VMODE_NONINTERLACED; | |
606 | ||
607 | fbinfo->var.xres = LCD_X_RES; | |
608 | fbinfo->var.xres_virtual = LCD_X_RES; | |
609 | fbinfo->var.yres = LCD_Y_RES; | |
610 | fbinfo->var.yres_virtual = LCD_Y_RES; | |
fbd65e0e | 611 | fbinfo->var.bits_per_pixel = info->lcd_bpp; |
9cfe4a93 MH |
612 | |
613 | if (info->disp_info->mode & LQ035_BGR) { | |
fbd65e0e MH |
614 | if (info->lcd_bpp == 24) { |
615 | fbinfo->var.red.offset = 0; | |
616 | fbinfo->var.green.offset = 8; | |
617 | fbinfo->var.blue.offset = 16; | |
618 | } else { | |
619 | fbinfo->var.red.offset = 0; | |
620 | fbinfo->var.green.offset = 5; | |
621 | fbinfo->var.blue.offset = 11; | |
622 | } | |
9cfe4a93 | 623 | } else { |
fbd65e0e MH |
624 | if (info->lcd_bpp == 24) { |
625 | fbinfo->var.red.offset = 16; | |
626 | fbinfo->var.green.offset = 8; | |
627 | fbinfo->var.blue.offset = 0; | |
628 | } else { | |
629 | fbinfo->var.red.offset = 11; | |
630 | fbinfo->var.green.offset = 5; | |
631 | fbinfo->var.blue.offset = 0; | |
632 | } | |
9cfe4a93 MH |
633 | } |
634 | ||
635 | fbinfo->var.transp.offset = 0; | |
636 | ||
fbd65e0e MH |
637 | if (info->lcd_bpp == 24) { |
638 | fbinfo->var.red.length = 8; | |
639 | fbinfo->var.green.length = 8; | |
640 | fbinfo->var.blue.length = 8; | |
641 | } else { | |
642 | fbinfo->var.red.length = 5; | |
643 | fbinfo->var.green.length = 6; | |
644 | fbinfo->var.blue.length = 5; | |
645 | } | |
9cfe4a93 MH |
646 | |
647 | fbinfo->var.transp.length = 0; | |
648 | ||
fbd65e0e MH |
649 | active_video_mem_offset = ((U_LINE / 2) * LCD_X_RES * (info->lcd_bpp / 8)); |
650 | ||
651 | fbinfo->fix.smem_len = LCD_X_RES * LCD_Y_RES * info->lcd_bpp / 8 | |
652 | + active_video_mem_offset; | |
9cfe4a93 MH |
653 | |
654 | fbinfo->fix.line_length = fbinfo->var.xres_virtual * | |
655 | fbinfo->var.bits_per_pixel / 8; | |
656 | ||
657 | ||
658 | fbinfo->fbops = &bfin_lq035q1_fb_ops; | |
659 | fbinfo->flags = FBINFO_FLAG_DEFAULT; | |
660 | ||
661 | info->fb_buffer = | |
662 | dma_alloc_coherent(NULL, fbinfo->fix.smem_len, &info->dma_handle, | |
663 | GFP_KERNEL); | |
664 | ||
665 | if (NULL == info->fb_buffer) { | |
666 | dev_err(&pdev->dev, "couldn't allocate dma buffer\n"); | |
667 | ret = -ENOMEM; | |
668 | goto out3; | |
669 | } | |
670 | ||
fbd65e0e MH |
671 | fbinfo->screen_base = (void *)info->fb_buffer + active_video_mem_offset; |
672 | fbinfo->fix.smem_start = (int)info->fb_buffer + active_video_mem_offset; | |
9cfe4a93 MH |
673 | |
674 | fbinfo->fbops = &bfin_lq035q1_fb_ops; | |
675 | ||
676 | fbinfo->pseudo_palette = &info->pseudo_pal; | |
677 | ||
678 | ret = fb_alloc_cmap(&fbinfo->cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0); | |
679 | if (ret < 0) { | |
680 | dev_err(&pdev->dev, "failed to allocate colormap (%d entries)\n", | |
681 | BFIN_LCD_NBR_PALETTE_ENTRIES); | |
682 | goto out4; | |
683 | } | |
684 | ||
fbd65e0e MH |
685 | ret = bfin_lq035q1_request_ports(pdev, |
686 | info->disp_info->ppi_mode == USE_RGB565_16_BIT_PPI); | |
9cfe4a93 MH |
687 | if (ret) { |
688 | dev_err(&pdev->dev, "couldn't request gpio port\n"); | |
689 | goto out6; | |
690 | } | |
691 | ||
692 | info->irq = platform_get_irq(pdev, 0); | |
693 | if (info->irq < 0) { | |
694 | ret = -EINVAL; | |
695 | goto out7; | |
696 | } | |
697 | ||
f8798ccb | 698 | ret = request_irq(info->irq, bfin_lq035q1_irq_error, 0, |
9cfe4a93 MH |
699 | DRIVER_NAME" PPI ERROR", info); |
700 | if (ret < 0) { | |
701 | dev_err(&pdev->dev, "unable to request PPI ERROR IRQ\n"); | |
702 | goto out7; | |
703 | } | |
704 | ||
705 | info->spidrv.driver.name = DRIVER_NAME"-spi"; | |
706 | info->spidrv.probe = lq035q1_spidev_probe; | |
707 | info->spidrv.remove = __devexit_p(lq035q1_spidev_remove); | |
708 | info->spidrv.shutdown = lq035q1_spidev_shutdown; | |
709 | info->spidrv.suspend = lq035q1_spidev_suspend; | |
710 | info->spidrv.resume = lq035q1_spidev_resume; | |
711 | ||
712 | ret = spi_register_driver(&info->spidrv); | |
713 | if (ret < 0) { | |
714 | dev_err(&pdev->dev, "couldn't register SPI Interface\n"); | |
715 | goto out8; | |
716 | } | |
717 | ||
718 | if (info->disp_info->use_bl) { | |
f8bd4934 JH |
719 | ret = gpio_request_one(info->disp_info->gpio_bl, |
720 | GPIOF_OUT_INIT_LOW, "LQ035 Backlight"); | |
9cfe4a93 MH |
721 | |
722 | if (ret) { | |
723 | dev_err(&pdev->dev, "failed to request GPIO %d\n", | |
724 | info->disp_info->gpio_bl); | |
725 | goto out9; | |
726 | } | |
9cfe4a93 MH |
727 | } |
728 | ||
729 | ret = register_framebuffer(fbinfo); | |
730 | if (ret < 0) { | |
731 | dev_err(&pdev->dev, "unable to register framebuffer\n"); | |
732 | goto out10; | |
733 | } | |
734 | ||
735 | dev_info(&pdev->dev, "%dx%d %d-bit RGB FrameBuffer initialized\n", | |
fbd65e0e | 736 | LCD_X_RES, LCD_Y_RES, info->lcd_bpp); |
9cfe4a93 MH |
737 | |
738 | return 0; | |
739 | ||
740 | out10: | |
741 | if (info->disp_info->use_bl) | |
742 | gpio_free(info->disp_info->gpio_bl); | |
743 | out9: | |
744 | spi_unregister_driver(&info->spidrv); | |
745 | out8: | |
746 | free_irq(info->irq, info); | |
747 | out7: | |
fbd65e0e MH |
748 | bfin_lq035q1_free_ports(info->disp_info->ppi_mode == |
749 | USE_RGB565_16_BIT_PPI); | |
9cfe4a93 MH |
750 | out6: |
751 | fb_dealloc_cmap(&fbinfo->cmap); | |
752 | out4: | |
753 | dma_free_coherent(NULL, fbinfo->fix.smem_len, info->fb_buffer, | |
754 | info->dma_handle); | |
755 | out3: | |
756 | framebuffer_release(fbinfo); | |
757 | out2: | |
758 | free_dma(CH_PPI); | |
759 | out1: | |
760 | platform_set_drvdata(pdev, NULL); | |
761 | ||
762 | return ret; | |
763 | } | |
764 | ||
765 | static int __devexit bfin_lq035q1_remove(struct platform_device *pdev) | |
766 | { | |
767 | struct fb_info *fbinfo = platform_get_drvdata(pdev); | |
768 | struct bfin_lq035q1fb_info *info = fbinfo->par; | |
769 | ||
770 | if (info->disp_info->use_bl) | |
771 | gpio_free(info->disp_info->gpio_bl); | |
772 | ||
773 | spi_unregister_driver(&info->spidrv); | |
774 | ||
775 | unregister_framebuffer(fbinfo); | |
776 | ||
777 | free_dma(CH_PPI); | |
778 | free_irq(info->irq, info); | |
779 | ||
780 | if (info->fb_buffer != NULL) | |
781 | dma_free_coherent(NULL, fbinfo->fix.smem_len, info->fb_buffer, | |
782 | info->dma_handle); | |
783 | ||
784 | fb_dealloc_cmap(&fbinfo->cmap); | |
785 | ||
fbd65e0e MH |
786 | bfin_lq035q1_free_ports(info->disp_info->ppi_mode == |
787 | USE_RGB565_16_BIT_PPI); | |
9cfe4a93 MH |
788 | |
789 | platform_set_drvdata(pdev, NULL); | |
790 | framebuffer_release(fbinfo); | |
791 | ||
792 | dev_info(&pdev->dev, "unregistered LCD driver\n"); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
797 | #ifdef CONFIG_PM | |
798 | static int bfin_lq035q1_suspend(struct device *dev) | |
799 | { | |
800 | struct fb_info *fbinfo = dev_get_drvdata(dev); | |
801 | struct bfin_lq035q1fb_info *info = fbinfo->par; | |
802 | ||
803 | if (info->lq035_open_cnt) { | |
804 | lq035q1_backlight(info, 0); | |
805 | bfin_lq035q1_disable_ppi(); | |
806 | SSYNC(); | |
807 | disable_dma(CH_PPI); | |
808 | bfin_lq035q1_stop_timers(); | |
809 | bfin_write_PPI_STATUS(-1); | |
810 | } | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | static int bfin_lq035q1_resume(struct device *dev) | |
816 | { | |
817 | struct fb_info *fbinfo = dev_get_drvdata(dev); | |
818 | struct bfin_lq035q1fb_info *info = fbinfo->par; | |
819 | ||
820 | if (info->lq035_open_cnt) { | |
821 | bfin_lq035q1_disable_ppi(); | |
822 | SSYNC(); | |
823 | ||
824 | bfin_lq035q1_config_dma(info); | |
825 | bfin_lq035q1_config_ppi(info); | |
fbd65e0e | 826 | bfin_lq035q1_init_timers(info); |
9cfe4a93 MH |
827 | |
828 | /* start dma */ | |
829 | enable_dma(CH_PPI); | |
830 | bfin_lq035q1_enable_ppi(); | |
831 | bfin_lq035q1_start_timers(); | |
832 | lq035q1_backlight(info, 1); | |
833 | } | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
838 | static struct dev_pm_ops bfin_lq035q1_dev_pm_ops = { | |
839 | .suspend = bfin_lq035q1_suspend, | |
840 | .resume = bfin_lq035q1_resume, | |
841 | }; | |
842 | #endif | |
843 | ||
844 | static struct platform_driver bfin_lq035q1_driver = { | |
845 | .probe = bfin_lq035q1_probe, | |
846 | .remove = __devexit_p(bfin_lq035q1_remove), | |
847 | .driver = { | |
848 | .name = DRIVER_NAME, | |
849 | #ifdef CONFIG_PM | |
850 | .pm = &bfin_lq035q1_dev_pm_ops, | |
851 | #endif | |
852 | }, | |
853 | }; | |
854 | ||
855 | static int __init bfin_lq035q1_driver_init(void) | |
856 | { | |
857 | return platform_driver_register(&bfin_lq035q1_driver); | |
858 | } | |
859 | module_init(bfin_lq035q1_driver_init); | |
860 | ||
861 | static void __exit bfin_lq035q1_driver_cleanup(void) | |
862 | { | |
863 | platform_driver_unregister(&bfin_lq035q1_driver); | |
864 | } | |
865 | module_exit(bfin_lq035q1_driver_cleanup); | |
866 | ||
867 | MODULE_DESCRIPTION("Blackfin TFT LCD Driver"); | |
868 | MODULE_LICENSE("GPL"); |