2 * Copyright (C) 2008 Nokia Corporation
3 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #ifndef __OMAP_OMAPDSS_H
19 #define __OMAP_OMAPDSS_H
21 #include <linux/list.h>
22 #include <linux/kobject.h>
23 #include <linux/device.h>
25 #define DISPC_IRQ_FRAMEDONE (1 << 0)
26 #define DISPC_IRQ_VSYNC (1 << 1)
27 #define DISPC_IRQ_EVSYNC_EVEN (1 << 2)
28 #define DISPC_IRQ_EVSYNC_ODD (1 << 3)
29 #define DISPC_IRQ_ACBIAS_COUNT_STAT (1 << 4)
30 #define DISPC_IRQ_PROG_LINE_NUM (1 << 5)
31 #define DISPC_IRQ_GFX_FIFO_UNDERFLOW (1 << 6)
32 #define DISPC_IRQ_GFX_END_WIN (1 << 7)
33 #define DISPC_IRQ_PAL_GAMMA_MASK (1 << 8)
34 #define DISPC_IRQ_OCP_ERR (1 << 9)
35 #define DISPC_IRQ_VID1_FIFO_UNDERFLOW (1 << 10)
36 #define DISPC_IRQ_VID1_END_WIN (1 << 11)
37 #define DISPC_IRQ_VID2_FIFO_UNDERFLOW (1 << 12)
38 #define DISPC_IRQ_VID2_END_WIN (1 << 13)
39 #define DISPC_IRQ_SYNC_LOST (1 << 14)
40 #define DISPC_IRQ_SYNC_LOST_DIGIT (1 << 15)
41 #define DISPC_IRQ_WAKEUP (1 << 16)
42 #define DISPC_IRQ_SYNC_LOST2 (1 << 17)
43 #define DISPC_IRQ_VSYNC2 (1 << 18)
44 #define DISPC_IRQ_VID3_END_WIN (1 << 19)
45 #define DISPC_IRQ_VID3_FIFO_UNDERFLOW (1 << 20)
46 #define DISPC_IRQ_ACBIAS_COUNT_STAT2 (1 << 21)
47 #define DISPC_IRQ_FRAMEDONE2 (1 << 22)
48 #define DISPC_IRQ_FRAMEDONEWB (1 << 23)
49 #define DISPC_IRQ_FRAMEDONETV (1 << 24)
50 #define DISPC_IRQ_WBBUFFEROVERFLOW (1 << 25)
52 struct omap_dss_device;
53 struct omap_overlay_manager;
55 enum omap_display_type {
56 OMAP_DISPLAY_TYPE_NONE = 0,
57 OMAP_DISPLAY_TYPE_DPI = 1 << 0,
58 OMAP_DISPLAY_TYPE_DBI = 1 << 1,
59 OMAP_DISPLAY_TYPE_SDI = 1 << 2,
60 OMAP_DISPLAY_TYPE_DSI = 1 << 3,
61 OMAP_DISPLAY_TYPE_VENC = 1 << 4,
62 OMAP_DISPLAY_TYPE_HDMI = 1 << 5,
73 OMAP_DSS_CHANNEL_LCD = 0,
74 OMAP_DSS_CHANNEL_DIGIT = 1,
75 OMAP_DSS_CHANNEL_LCD2 = 2,
78 enum omap_color_mode {
79 OMAP_DSS_COLOR_CLUT1 = 1 << 0, /* BITMAP 1 */
80 OMAP_DSS_COLOR_CLUT2 = 1 << 1, /* BITMAP 2 */
81 OMAP_DSS_COLOR_CLUT4 = 1 << 2, /* BITMAP 4 */
82 OMAP_DSS_COLOR_CLUT8 = 1 << 3, /* BITMAP 8 */
83 OMAP_DSS_COLOR_RGB12U = 1 << 4, /* RGB12, 16-bit container */
84 OMAP_DSS_COLOR_ARGB16 = 1 << 5, /* ARGB16 */
85 OMAP_DSS_COLOR_RGB16 = 1 << 6, /* RGB16 */
86 OMAP_DSS_COLOR_RGB24U = 1 << 7, /* RGB24, 32-bit container */
87 OMAP_DSS_COLOR_RGB24P = 1 << 8, /* RGB24, 24-bit container */
88 OMAP_DSS_COLOR_YUV2 = 1 << 9, /* YUV2 4:2:2 co-sited */
89 OMAP_DSS_COLOR_UYVY = 1 << 10, /* UYVY 4:2:2 co-sited */
90 OMAP_DSS_COLOR_ARGB32 = 1 << 11, /* ARGB32 */
91 OMAP_DSS_COLOR_RGBA32 = 1 << 12, /* RGBA32 */
92 OMAP_DSS_COLOR_RGBX32 = 1 << 13, /* RGBx32 */
93 OMAP_DSS_COLOR_NV12 = 1 << 14, /* NV12 format: YUV 4:2:0 */
94 OMAP_DSS_COLOR_RGBA16 = 1 << 15, /* RGBA16 - 4444 */
95 OMAP_DSS_COLOR_RGBX16 = 1 << 16, /* RGBx16 - 4444 */
96 OMAP_DSS_COLOR_ARGB16_1555 = 1 << 17, /* ARGB16 - 1555 */
97 OMAP_DSS_COLOR_XRGB16_1555 = 1 << 18, /* xRGB16 - 1555 */
100 enum omap_lcd_display_type {
101 OMAP_DSS_LCD_DISPLAY_STN,
102 OMAP_DSS_LCD_DISPLAY_TFT,
105 enum omap_dss_load_mode {
106 OMAP_DSS_LOAD_CLUT_AND_FRAME = 0,
107 OMAP_DSS_LOAD_CLUT_ONLY = 1,
108 OMAP_DSS_LOAD_FRAME_ONLY = 2,
109 OMAP_DSS_LOAD_CLUT_ONCE_FRAME = 3,
112 enum omap_dss_trans_key_type {
113 OMAP_DSS_COLOR_KEY_GFX_DST = 0,
114 OMAP_DSS_COLOR_KEY_VID_SRC = 1,
117 enum omap_rfbi_te_mode {
118 OMAP_DSS_RFBI_TE_MODE_1 = 1,
119 OMAP_DSS_RFBI_TE_MODE_2 = 2,
122 enum omap_panel_config {
123 OMAP_DSS_LCD_IVS = 1<<0,
124 OMAP_DSS_LCD_IHS = 1<<1,
125 OMAP_DSS_LCD_IPC = 1<<2,
126 OMAP_DSS_LCD_IEO = 1<<3,
127 OMAP_DSS_LCD_RF = 1<<4,
128 OMAP_DSS_LCD_ONOFF = 1<<5,
130 OMAP_DSS_LCD_TFT = 1<<20,
133 enum omap_dss_venc_type {
134 OMAP_DSS_VENC_TYPE_COMPOSITE,
135 OMAP_DSS_VENC_TYPE_SVIDEO,
138 enum omap_dss_dsi_pixel_format {
139 OMAP_DSS_DSI_FMT_RGB888,
140 OMAP_DSS_DSI_FMT_RGB666,
141 OMAP_DSS_DSI_FMT_RGB666_PACKED,
142 OMAP_DSS_DSI_FMT_RGB565,
145 enum omap_dss_dsi_mode {
146 OMAP_DSS_DSI_CMD_MODE = 0,
147 OMAP_DSS_DSI_VIDEO_MODE,
150 enum omap_display_caps {
151 OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE = 1 << 0,
152 OMAP_DSS_DISPLAY_CAP_TEAR_ELIM = 1 << 1,
155 enum omap_dss_display_state {
156 OMAP_DSS_DISPLAY_DISABLED = 0,
157 OMAP_DSS_DISPLAY_ACTIVE,
158 OMAP_DSS_DISPLAY_SUSPENDED,
161 /* XXX perhaps this should be removed */
162 enum omap_dss_overlay_managers {
163 OMAP_DSS_OVL_MGR_LCD,
165 OMAP_DSS_OVL_MGR_LCD2,
168 enum omap_dss_rotation_type {
169 OMAP_DSS_ROT_DMA = 0,
170 OMAP_DSS_ROT_VRFB = 1,
173 /* clockwise rotation angle */
174 enum omap_dss_rotation_angle {
177 OMAP_DSS_ROT_180 = 2,
178 OMAP_DSS_ROT_270 = 3,
181 enum omap_overlay_caps {
182 OMAP_DSS_OVL_CAP_SCALE = 1 << 0,
183 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA = 1 << 1,
184 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA = 1 << 2,
185 OMAP_DSS_OVL_CAP_ZORDER = 1 << 3,
188 enum omap_overlay_manager_caps {
189 OMAP_DSS_DUMMY_VALUE, /* add a dummy value to prevent compiler error */
192 enum omap_dss_clk_source {
193 OMAP_DSS_CLK_SRC_FCK = 0, /* OMAP2/3: DSS1_ALWON_FCLK
195 OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC, /* OMAP3: DSI1_PLL_FCLK
196 * OMAP4: PLL1_CLK1 */
197 OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI, /* OMAP3: DSI2_PLL_FCLK
198 * OMAP4: PLL1_CLK2 */
199 OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC, /* OMAP4: PLL2_CLK1 */
200 OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI, /* OMAP4: PLL2_CLK2 */
205 struct rfbi_timings {
219 u32 tim[5]; /* set by rfbi_convert_timings() */
224 void omap_rfbi_write_command(const void *buf, u32 len);
225 void omap_rfbi_read_data(void *buf, u32 len);
226 void omap_rfbi_write_data(const void *buf, u32 len);
227 void omap_rfbi_write_pixels(const void __iomem *buf, int scr_width,
230 int omap_rfbi_enable_te(bool enable, unsigned line);
231 int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode,
232 unsigned hs_pulse_time, unsigned vs_pulse_time,
233 int hs_pol_inv, int vs_pol_inv, int extif_div);
234 void rfbi_bus_lock(void);
235 void rfbi_bus_unlock(void);
239 struct omap_dss_dsi_videomode_data {
240 /* DSI video mode blanking data */
241 /* Unit: byte clock cycles */
245 /* Unit: line clocks */
250 /* DSI blanking modes */
252 int hsa_blanking_mode;
253 int hbp_blanking_mode;
254 int hfp_blanking_mode;
256 /* Video port sync events */
263 bool ddr_clk_always_on;
267 void dsi_bus_lock(struct omap_dss_device *dssdev);
268 void dsi_bus_unlock(struct omap_dss_device *dssdev);
269 int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
271 int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data,
273 int dsi_vc_dcs_write_0(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd);
274 int dsi_vc_generic_write_0(struct omap_dss_device *dssdev, int channel);
275 int dsi_vc_dcs_write_1(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
277 int dsi_vc_generic_write_1(struct omap_dss_device *dssdev, int channel,
279 int dsi_vc_generic_write_2(struct omap_dss_device *dssdev, int channel,
280 u8 param1, u8 param2);
281 int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
283 int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel,
285 int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
286 u8 *buf, int buflen);
287 int dsi_vc_generic_read_0(struct omap_dss_device *dssdev, int channel, u8 *buf,
289 int dsi_vc_generic_read_1(struct omap_dss_device *dssdev, int channel, u8 param,
290 u8 *buf, int buflen);
291 int dsi_vc_generic_read_2(struct omap_dss_device *dssdev, int channel,
292 u8 param1, u8 param2, u8 *buf, int buflen);
293 int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel,
295 int dsi_vc_send_null(struct omap_dss_device *dssdev, int channel);
296 int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel);
297 int dsi_video_mode_enable(struct omap_dss_device *dssdev, int channel);
298 void dsi_video_mode_disable(struct omap_dss_device *dssdev, int channel);
300 /* Board specific data */
301 struct omap_dss_board_info {
302 int (*get_context_loss_count)(struct device *dev);
304 struct omap_dss_device **devices;
305 struct omap_dss_device *default_device;
306 int (*dsi_enable_pads)(int dsi_id, unsigned lane_mask);
307 void (*dsi_disable_pads)(int dsi_id, unsigned lane_mask);
310 #if defined(CONFIG_OMAP2_DSS_MODULE) || defined(CONFIG_OMAP2_DSS)
311 /* Init with the board info */
312 extern int omap_display_init(struct omap_dss_board_info *board_data);
314 static inline int omap_display_init(struct omap_dss_board_info *board_data)
320 struct omap_display_platform_data {
321 struct omap_dss_board_info *board_data;
322 /* TODO: Additional members to be added when PM is considered */
325 struct omap_video_timings {
332 /* Unit: pixel clocks */
333 u16 hsw; /* Horizontal synchronization pulse width */
334 /* Unit: pixel clocks */
335 u16 hfp; /* Horizontal front porch */
336 /* Unit: pixel clocks */
337 u16 hbp; /* Horizontal back porch */
338 /* Unit: line clocks */
339 u16 vsw; /* Vertical synchronization pulse width */
340 /* Unit: line clocks */
341 u16 vfp; /* Vertical front porch */
342 /* Unit: line clocks */
343 u16 vbp; /* Vertical back porch */
346 #ifdef CONFIG_OMAP2_DSS_VENC
347 /* Hardcoded timings for tv modes. Venc only uses these to
348 * identify the mode, and does not actually use the configs
349 * itself. However, the configs should be something that
350 * a normal monitor can also show */
351 extern const struct omap_video_timings omap_dss_pal_timings;
352 extern const struct omap_video_timings omap_dss_ntsc_timings;
355 struct omap_dss_cpr_coefs {
361 struct omap_overlay_info {
365 u32 p_uv_addr; /* for NV12 format */
369 enum omap_color_mode color_mode;
371 enum omap_dss_rotation_type rotation_type;
376 u16 out_width; /* if 0, out_width == width */
377 u16 out_height; /* if 0, out_height == height */
383 struct omap_overlay {
385 struct list_head list;
390 enum omap_color_mode supported_modes;
391 enum omap_overlay_caps caps;
394 struct omap_overlay_manager *manager;
395 struct omap_overlay_info info;
397 bool manager_changed;
398 /* if true, info has been changed, but not applied() yet */
401 int (*set_manager)(struct omap_overlay *ovl,
402 struct omap_overlay_manager *mgr);
403 int (*unset_manager)(struct omap_overlay *ovl);
405 int (*set_overlay_info)(struct omap_overlay *ovl,
406 struct omap_overlay_info *info);
407 void (*get_overlay_info)(struct omap_overlay *ovl,
408 struct omap_overlay_info *info);
410 int (*wait_for_go)(struct omap_overlay *ovl);
413 struct omap_overlay_manager_info {
416 enum omap_dss_trans_key_type trans_key_type;
420 bool partial_alpha_enabled;
423 struct omap_dss_cpr_coefs cpr_coefs;
426 struct omap_overlay_manager {
428 struct list_head list;
432 enum omap_channel id;
433 enum omap_overlay_manager_caps caps;
435 struct omap_overlay **overlays;
436 enum omap_display_type supported_displays;
439 struct omap_dss_device *device;
440 struct omap_overlay_manager_info info;
443 /* if true, info has been changed but not applied() yet */
446 int (*set_device)(struct omap_overlay_manager *mgr,
447 struct omap_dss_device *dssdev);
448 int (*unset_device)(struct omap_overlay_manager *mgr);
450 int (*set_manager_info)(struct omap_overlay_manager *mgr,
451 struct omap_overlay_manager_info *info);
452 void (*get_manager_info)(struct omap_overlay_manager *mgr,
453 struct omap_overlay_manager_info *info);
455 int (*apply)(struct omap_overlay_manager *mgr);
456 int (*wait_for_go)(struct omap_overlay_manager *mgr);
457 int (*wait_for_vsync)(struct omap_overlay_manager *mgr);
459 int (*enable)(struct omap_overlay_manager *mgr);
460 int (*disable)(struct omap_overlay_manager *mgr);
463 struct omap_dss_device {
466 enum omap_display_type type;
468 enum omap_channel channel;
503 enum omap_dss_venc_type type;
504 bool invert_polarity;
513 enum omap_dss_clk_source lcd_clk_src;
516 enum omap_dss_clk_source dispc_fclk_src;
520 /* regn is one greater than TRM's REGN value */
527 enum omap_dss_clk_source dsi_fclk_src;
531 /* regn is one greater than TRM's REGN value */
538 struct omap_video_timings timings;
540 int acbi; /* ac-bias pin transitions per interrupt */
541 /* Unit: line clocks */
542 int acb; /* ac-bias pin frequency */
544 enum omap_panel_config config;
546 enum omap_dss_dsi_pixel_format dsi_pix_fmt;
547 enum omap_dss_dsi_mode dsi_mode;
548 struct omap_dss_dsi_videomode_data dsi_vm_data;
553 struct rfbi_timings rfbi_timings;
558 int max_backlight_level;
562 /* used to match device to driver */
563 const char *driver_name;
567 struct omap_dss_driver *driver;
569 /* helper variable for driver suspend/resume */
570 bool activate_after_resume;
572 enum omap_display_caps caps;
574 struct omap_overlay_manager *manager;
576 enum omap_dss_display_state state;
578 /* platform specific */
579 int (*platform_enable)(struct omap_dss_device *dssdev);
580 void (*platform_disable)(struct omap_dss_device *dssdev);
581 int (*set_backlight)(struct omap_dss_device *dssdev, int level);
582 int (*get_backlight)(struct omap_dss_device *dssdev);
585 struct omap_dss_driver {
586 struct device_driver driver;
588 int (*probe)(struct omap_dss_device *);
589 void (*remove)(struct omap_dss_device *);
591 int (*enable)(struct omap_dss_device *display);
592 void (*disable)(struct omap_dss_device *display);
593 int (*suspend)(struct omap_dss_device *display);
594 int (*resume)(struct omap_dss_device *display);
595 int (*run_test)(struct omap_dss_device *display, int test);
597 int (*update)(struct omap_dss_device *dssdev,
598 u16 x, u16 y, u16 w, u16 h);
599 int (*sync)(struct omap_dss_device *dssdev);
601 int (*enable_te)(struct omap_dss_device *dssdev, bool enable);
602 int (*get_te)(struct omap_dss_device *dssdev);
604 u8 (*get_rotate)(struct omap_dss_device *dssdev);
605 int (*set_rotate)(struct omap_dss_device *dssdev, u8 rotate);
607 bool (*get_mirror)(struct omap_dss_device *dssdev);
608 int (*set_mirror)(struct omap_dss_device *dssdev, bool enable);
610 int (*memory_read)(struct omap_dss_device *dssdev,
611 void *buf, size_t size,
612 u16 x, u16 y, u16 w, u16 h);
614 void (*get_resolution)(struct omap_dss_device *dssdev,
615 u16 *xres, u16 *yres);
616 void (*get_dimensions)(struct omap_dss_device *dssdev,
617 u32 *width, u32 *height);
618 int (*get_recommended_bpp)(struct omap_dss_device *dssdev);
620 int (*check_timings)(struct omap_dss_device *dssdev,
621 struct omap_video_timings *timings);
622 void (*set_timings)(struct omap_dss_device *dssdev,
623 struct omap_video_timings *timings);
624 void (*get_timings)(struct omap_dss_device *dssdev,
625 struct omap_video_timings *timings);
627 int (*set_wss)(struct omap_dss_device *dssdev, u32 wss);
628 u32 (*get_wss)(struct omap_dss_device *dssdev);
630 int (*read_edid)(struct omap_dss_device *dssdev, u8 *buf, int len);
631 bool (*detect)(struct omap_dss_device *dssdev);
634 int omap_dss_register_driver(struct omap_dss_driver *);
635 void omap_dss_unregister_driver(struct omap_dss_driver *);
637 void omap_dss_get_device(struct omap_dss_device *dssdev);
638 void omap_dss_put_device(struct omap_dss_device *dssdev);
639 #define for_each_dss_dev(d) while ((d = omap_dss_get_next_device(d)) != NULL)
640 struct omap_dss_device *omap_dss_get_next_device(struct omap_dss_device *from);
641 struct omap_dss_device *omap_dss_find_device(void *data,
642 int (*match)(struct omap_dss_device *dssdev, void *data));
644 int omap_dss_start_device(struct omap_dss_device *dssdev);
645 void omap_dss_stop_device(struct omap_dss_device *dssdev);
647 int omap_dss_get_num_overlay_managers(void);
648 struct omap_overlay_manager *omap_dss_get_overlay_manager(int num);
650 int omap_dss_get_num_overlays(void);
651 struct omap_overlay *omap_dss_get_overlay(int num);
653 void omapdss_default_get_resolution(struct omap_dss_device *dssdev,
654 u16 *xres, u16 *yres);
655 int omapdss_default_get_recommended_bpp(struct omap_dss_device *dssdev);
657 typedef void (*omap_dispc_isr_t) (void *arg, u32 mask);
658 int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask);
659 int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask);
661 int omap_dispc_wait_for_irq_timeout(u32 irqmask, unsigned long timeout);
662 int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask,
663 unsigned long timeout);
665 #define to_dss_driver(x) container_of((x), struct omap_dss_driver, driver)
666 #define to_dss_device(x) container_of((x), struct omap_dss_device, dev)
668 void omapdss_dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
670 int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable);
672 int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
673 u16 *x, u16 *y, u16 *w, u16 *h,
674 bool enlarge_update_area);
675 int omap_dsi_update(struct omap_dss_device *dssdev,
677 u16 x, u16 y, u16 w, u16 h,
678 void (*callback)(int, void *), void *data);
679 int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel);
680 int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id);
681 void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel);
683 int omapdss_dsi_display_enable(struct omap_dss_device *dssdev);
684 void omapdss_dsi_display_disable(struct omap_dss_device *dssdev,
685 bool disconnect_lanes, bool enter_ulps);
687 int omapdss_dpi_display_enable(struct omap_dss_device *dssdev);
688 void omapdss_dpi_display_disable(struct omap_dss_device *dssdev);
689 void dpi_set_timings(struct omap_dss_device *dssdev,
690 struct omap_video_timings *timings);
691 int dpi_check_timings(struct omap_dss_device *dssdev,
692 struct omap_video_timings *timings);
694 int omapdss_sdi_display_enable(struct omap_dss_device *dssdev);
695 void omapdss_sdi_display_disable(struct omap_dss_device *dssdev);
697 int omapdss_rfbi_display_enable(struct omap_dss_device *dssdev);
698 void omapdss_rfbi_display_disable(struct omap_dss_device *dssdev);
699 int omap_rfbi_prepare_update(struct omap_dss_device *dssdev,
700 u16 *x, u16 *y, u16 *w, u16 *h);
701 int omap_rfbi_update(struct omap_dss_device *dssdev,
702 u16 x, u16 y, u16 w, u16 h,
703 void (*callback)(void *), void *data);
704 int omap_rfbi_configure(struct omap_dss_device *dssdev, int pixel_size,