blob: 25abbcf389134201c47e2a729523d97dc344df9b [file] [log] [blame]
York Sun9b53a9e2008-04-28 02:15:34 -07001/*
2 * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * Freescale DIU Frame Buffer device driver
5 *
6 * Authors: Hongjun Chen <hong-jun.chen@freescale.com>
7 * Paul Widmer <paul.widmer@freescale.com>
8 * Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
9 * York Sun <yorksun@freescale.com>
10 *
11 * Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 */
19
20#include <linux/module.h>
21#include <linux/kernel.h>
22#include <linux/errno.h>
23#include <linux/string.h>
24#include <linux/slab.h>
25#include <linux/fb.h>
26#include <linux/init.h>
27#include <linux/dma-mapping.h>
28#include <linux/platform_device.h>
29#include <linux/interrupt.h>
30#include <linux/clk.h>
31#include <linux/uaccess.h>
32#include <linux/vmalloc.h>
Timur Tabib715f9f2011-09-28 16:19:48 -050033#include <linux/spinlock.h>
Rob Herring5af50732013-09-17 14:28:33 -050034#include <linux/of_address.h>
35#include <linux/of_irq.h>
York Sun9b53a9e2008-04-28 02:15:34 -070036
York Sun9b53a9e2008-04-28 02:15:34 -070037#include <sysdev/fsl_soc.h>
Anatolij Gustschin0814a972010-07-23 04:00:36 +000038#include <linux/fsl-diu-fb.h>
Anatolij Gustschin8b856f02010-07-23 04:00:39 +000039#include "edid.h"
York Sun9b53a9e2008-04-28 02:15:34 -070040
Timur Tabiddd3d902011-12-02 17:03:27 -060041#define NUM_AOIS 5 /* 1 for plane 0, 2 for planes 1 & 2 each */
Timur Tabib715f9f2011-09-28 16:19:48 -050042
43/* HW cursor parameters */
44#define MAX_CURS 32
45
46/* INT_STATUS/INT_MASK field descriptions */
47#define INT_VSYNC 0x01 /* Vsync interrupt */
48#define INT_VSYNC_WB 0x02 /* Vsync interrupt for write back operation */
49#define INT_UNDRUN 0x04 /* Under run exception interrupt */
50#define INT_PARERR 0x08 /* Display parameters error interrupt */
51#define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */
52
York Sun9b53a9e2008-04-28 02:15:34 -070053/*
Timur Tabi63cf8df2011-09-15 16:44:51 -050054 * List of supported video modes
55 *
Timur Tabi760af8f2011-09-28 16:19:50 -050056 * The first entry is the default video mode. The remain entries are in
57 * order if increasing resolution and frequency. The 320x240-60 mode is
58 * the initial AOI for the second and third planes.
York Sun9b53a9e2008-04-28 02:15:34 -070059 */
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -080060static struct fb_videomode fsl_diu_mode_db[] = {
York Sun9b53a9e2008-04-28 02:15:34 -070061 {
York Sun9b53a9e2008-04-28 02:15:34 -070062 .refresh = 60,
63 .xres = 1024,
64 .yres = 768,
65 .pixclock = 15385,
66 .left_margin = 160,
67 .right_margin = 24,
68 .upper_margin = 29,
69 .lower_margin = 3,
70 .hsync_len = 136,
71 .vsync_len = 6,
72 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
73 .vmode = FB_VMODE_NONINTERLACED
74 },
75 {
Timur Tabi760af8f2011-09-28 16:19:50 -050076 .refresh = 60,
77 .xres = 320,
78 .yres = 240,
79 .pixclock = 79440,
80 .left_margin = 16,
81 .right_margin = 16,
82 .upper_margin = 16,
83 .lower_margin = 5,
84 .hsync_len = 48,
85 .vsync_len = 1,
86 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
87 .vmode = FB_VMODE_NONINTERLACED
88 },
89 {
90 .refresh = 60,
91 .xres = 640,
92 .yres = 480,
93 .pixclock = 39722,
94 .left_margin = 48,
95 .right_margin = 16,
96 .upper_margin = 33,
97 .lower_margin = 10,
98 .hsync_len = 96,
99 .vsync_len = 2,
100 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
101 .vmode = FB_VMODE_NONINTERLACED
102 },
103 {
104 .refresh = 72,
105 .xres = 640,
106 .yres = 480,
107 .pixclock = 32052,
108 .left_margin = 128,
109 .right_margin = 24,
110 .upper_margin = 28,
111 .lower_margin = 9,
112 .hsync_len = 40,
113 .vsync_len = 3,
114 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
115 .vmode = FB_VMODE_NONINTERLACED
116 },
117 {
118 .refresh = 75,
119 .xres = 640,
120 .yres = 480,
121 .pixclock = 31747,
122 .left_margin = 120,
123 .right_margin = 16,
124 .upper_margin = 16,
125 .lower_margin = 1,
126 .hsync_len = 64,
127 .vsync_len = 3,
128 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
129 .vmode = FB_VMODE_NONINTERLACED
130 },
131 {
132 .refresh = 90,
133 .xres = 640,
134 .yres = 480,
135 .pixclock = 25057,
136 .left_margin = 120,
137 .right_margin = 32,
138 .upper_margin = 14,
139 .lower_margin = 25,
140 .hsync_len = 40,
141 .vsync_len = 14,
142 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
143 .vmode = FB_VMODE_NONINTERLACED
144 },
145 {
146 .refresh = 100,
147 .xres = 640,
148 .yres = 480,
149 .pixclock = 22272,
150 .left_margin = 48,
151 .right_margin = 32,
152 .upper_margin = 17,
153 .lower_margin = 22,
154 .hsync_len = 128,
155 .vsync_len = 12,
156 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
157 .vmode = FB_VMODE_NONINTERLACED
158 },
159 {
160 .refresh = 60,
161 .xres = 800,
162 .yres = 480,
163 .pixclock = 33805,
164 .left_margin = 96,
165 .right_margin = 24,
166 .upper_margin = 10,
167 .lower_margin = 3,
168 .hsync_len = 72,
169 .vsync_len = 7,
170 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
171 .vmode = FB_VMODE_NONINTERLACED
172 },
173 {
174 .refresh = 60,
175 .xres = 800,
176 .yres = 600,
177 .pixclock = 25000,
178 .left_margin = 88,
179 .right_margin = 40,
180 .upper_margin = 23,
181 .lower_margin = 1,
182 .hsync_len = 128,
183 .vsync_len = 4,
184 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
185 .vmode = FB_VMODE_NONINTERLACED
186 },
187 {
188 .refresh = 60,
189 .xres = 854,
190 .yres = 480,
191 .pixclock = 31518,
192 .left_margin = 104,
193 .right_margin = 16,
194 .upper_margin = 13,
195 .lower_margin = 1,
196 .hsync_len = 88,
197 .vsync_len = 3,
198 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
199 .vmode = FB_VMODE_NONINTERLACED
200 },
201 {
York Sun9b53a9e2008-04-28 02:15:34 -0700202 .refresh = 70,
203 .xres = 1024,
204 .yres = 768,
205 .pixclock = 16886,
206 .left_margin = 3,
207 .right_margin = 3,
208 .upper_margin = 2,
209 .lower_margin = 2,
210 .hsync_len = 40,
211 .vsync_len = 18,
212 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
213 .vmode = FB_VMODE_NONINTERLACED
214 },
215 {
York Sun9b53a9e2008-04-28 02:15:34 -0700216 .refresh = 75,
217 .xres = 1024,
218 .yres = 768,
219 .pixclock = 15009,
220 .left_margin = 3,
221 .right_margin = 3,
222 .upper_margin = 2,
223 .lower_margin = 2,
224 .hsync_len = 80,
225 .vsync_len = 32,
226 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
227 .vmode = FB_VMODE_NONINTERLACED
228 },
229 {
Timur Tabi760af8f2011-09-28 16:19:50 -0500230 .refresh = 60,
231 .xres = 1280,
232 .yres = 480,
233 .pixclock = 18939,
234 .left_margin = 353,
235 .right_margin = 47,
236 .upper_margin = 39,
237 .lower_margin = 4,
238 .hsync_len = 8,
239 .vsync_len = 2,
240 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
241 .vmode = FB_VMODE_NONINTERLACED
242 },
243 {
244 .refresh = 60,
245 .xres = 1280,
246 .yres = 720,
247 .pixclock = 13426,
248 .left_margin = 192,
249 .right_margin = 64,
250 .upper_margin = 22,
251 .lower_margin = 1,
252 .hsync_len = 136,
253 .vsync_len = 3,
254 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
255 .vmode = FB_VMODE_NONINTERLACED
256 },
257 {
York Sun9b53a9e2008-04-28 02:15:34 -0700258 .refresh = 60,
259 .xres = 1280,
260 .yres = 1024,
261 .pixclock = 9375,
262 .left_margin = 38,
263 .right_margin = 128,
264 .upper_margin = 2,
265 .lower_margin = 7,
266 .hsync_len = 216,
267 .vsync_len = 37,
268 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
269 .vmode = FB_VMODE_NONINTERLACED
270 },
271 {
York Sun9b53a9e2008-04-28 02:15:34 -0700272 .refresh = 70,
273 .xres = 1280,
274 .yres = 1024,
275 .pixclock = 9380,
276 .left_margin = 6,
277 .right_margin = 6,
278 .upper_margin = 4,
279 .lower_margin = 4,
280 .hsync_len = 60,
281 .vsync_len = 94,
282 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
283 .vmode = FB_VMODE_NONINTERLACED
284 },
285 {
York Sun9b53a9e2008-04-28 02:15:34 -0700286 .refresh = 75,
287 .xres = 1280,
288 .yres = 1024,
289 .pixclock = 9380,
290 .left_margin = 6,
291 .right_margin = 6,
292 .upper_margin = 4,
293 .lower_margin = 4,
294 .hsync_len = 60,
295 .vsync_len = 15,
296 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
297 .vmode = FB_VMODE_NONINTERLACED
298 },
299 {
York Sun9b53a9e2008-04-28 02:15:34 -0700300 .refresh = 60,
Timur Tabi760af8f2011-09-28 16:19:50 -0500301 .xres = 1920,
302 .yres = 1080,
303 .pixclock = 5787,
304 .left_margin = 328,
305 .right_margin = 120,
306 .upper_margin = 34,
307 .lower_margin = 1,
308 .hsync_len = 208,
309 .vsync_len = 3,
York Sun9b53a9e2008-04-28 02:15:34 -0700310 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
311 .vmode = FB_VMODE_NONINTERLACED
312 },
313};
314
Timur Tabi760af8f2011-09-28 16:19:50 -0500315static char *fb_mode;
York Sun9b53a9e2008-04-28 02:15:34 -0700316static unsigned long default_bpp = 32;
Timur Tabi7653aaa2011-07-09 15:38:14 -0500317static enum fsl_diu_monitor_port monitor_port;
318static char *monitor_string;
York Sun9b53a9e2008-04-28 02:15:34 -0700319
320#if defined(CONFIG_NOT_COHERENT_CACHE)
321static u8 *coherence_data;
322static size_t coherence_data_size;
323static unsigned int d_cache_line_size;
324#endif
325
326static DEFINE_SPINLOCK(diu_lock);
327
Timur Tabi2572df92011-09-28 16:19:51 -0500328enum mfb_index {
329 PLANE0 = 0, /* Plane 0, only one AOI that fills the screen */
330 PLANE1_AOI0, /* Plane 1, first AOI */
331 PLANE1_AOI1, /* Plane 1, second AOI */
332 PLANE2_AOI0, /* Plane 2, first AOI */
333 PLANE2_AOI1, /* Plane 2, second AOI */
334};
335
York Sun9b53a9e2008-04-28 02:15:34 -0700336struct mfb_info {
Timur Tabi2572df92011-09-28 16:19:51 -0500337 enum mfb_index index;
York Sun9b53a9e2008-04-28 02:15:34 -0700338 char *id;
339 int registered;
York Sun9b53a9e2008-04-28 02:15:34 -0700340 unsigned long pseudo_palette[16];
341 struct diu_ad *ad;
York Sun9b53a9e2008-04-28 02:15:34 -0700342 unsigned char g_alpha;
343 unsigned int count;
344 int x_aoi_d; /* aoi display x offset to physical screen */
345 int y_aoi_d; /* aoi display y offset to physical screen */
346 struct fsl_diu_data *parent;
347};
348
Timur Tabiddd3d902011-12-02 17:03:27 -0600349/**
350 * struct fsl_diu_data - per-DIU data structure
351 * @dma_addr: DMA address of this structure
352 * @fsl_diu_info: fb_info objects, one per AOI
353 * @dev_attr: sysfs structure
354 * @irq: IRQ
Timur Tabiddd3d902011-12-02 17:03:27 -0600355 * @monitor_port: the monitor port this DIU is connected to
356 * @diu_reg: pointer to the DIU hardware registers
357 * @reg_lock: spinlock for register access
358 * @dummy_aoi: video buffer for the 4x4 32-bit dummy AOI
359 * dummy_ad: DIU Area Descriptor for the dummy AOI
360 * @ad[]: Area Descriptors for each real AOI
361 * @gamma: gamma color table
362 * @cursor: hardware cursor data
363 *
364 * This data structure must be allocated with 32-byte alignment, so that the
365 * internal fields can be aligned properly.
366 */
367struct fsl_diu_data {
368 dma_addr_t dma_addr;
369 struct fb_info fsl_diu_info[NUM_AOIS];
370 struct mfb_info mfb[NUM_AOIS];
371 struct device_attribute dev_attr;
372 unsigned int irq;
Timur Tabiddd3d902011-12-02 17:03:27 -0600373 enum fsl_diu_monitor_port monitor_port;
374 struct diu __iomem *diu_reg;
375 spinlock_t reg_lock;
376 u8 dummy_aoi[4 * 4 * 4];
377 struct diu_ad dummy_ad __aligned(8);
378 struct diu_ad ad[NUM_AOIS] __aligned(8);
379 u8 gamma[256 * 3] __aligned(32);
Timur Tabi38dd2da2013-03-30 02:36:00 +0200380 /* It's easier to parse the cursor data as little-endian */
381 __le16 cursor[MAX_CURS * MAX_CURS] __aligned(32);
382 /* Blank cursor data -- used to hide the cursor */
383 __le16 blank_cursor[MAX_CURS * MAX_CURS] __aligned(32);
Timur Tabie7b42712012-10-16 17:33:50 -0500384 uint8_t edid_data[EDID_LENGTH];
385 bool has_edid;
Timur Tabiddd3d902011-12-02 17:03:27 -0600386} __aligned(32);
387
388/* Determine the DMA address of a member of the fsl_diu_data structure */
389#define DMA_ADDR(p, f) ((p)->dma_addr + offsetof(struct fsl_diu_data, f))
York Sun9b53a9e2008-04-28 02:15:34 -0700390
Arvind Yadav526c9e92017-07-04 17:47:22 +0200391static const struct mfb_info mfb_template[] = {
Timur Tabi2572df92011-09-28 16:19:51 -0500392 {
393 .index = PLANE0,
Timur Tabi4a85dc8b2011-09-15 16:44:46 -0500394 .id = "Panel0",
395 .registered = 0,
396 .count = 0,
397 .x_aoi_d = 0,
398 .y_aoi_d = 0,
York Sun9b53a9e2008-04-28 02:15:34 -0700399 },
Timur Tabi2572df92011-09-28 16:19:51 -0500400 {
401 .index = PLANE1_AOI0,
Timur Tabi4a85dc8b2011-09-15 16:44:46 -0500402 .id = "Panel1 AOI0",
403 .registered = 0,
404 .g_alpha = 0xff,
405 .count = 0,
406 .x_aoi_d = 0,
407 .y_aoi_d = 0,
York Sun9b53a9e2008-04-28 02:15:34 -0700408 },
Timur Tabi2572df92011-09-28 16:19:51 -0500409 {
410 .index = PLANE1_AOI1,
Timur Tabi4a85dc8b2011-09-15 16:44:46 -0500411 .id = "Panel1 AOI1",
412 .registered = 0,
413 .g_alpha = 0xff,
414 .count = 0,
415 .x_aoi_d = 0,
416 .y_aoi_d = 480,
York Sun9b53a9e2008-04-28 02:15:34 -0700417 },
Timur Tabi2572df92011-09-28 16:19:51 -0500418 {
419 .index = PLANE2_AOI0,
Timur Tabi4a85dc8b2011-09-15 16:44:46 -0500420 .id = "Panel2 AOI0",
421 .registered = 0,
422 .g_alpha = 0xff,
423 .count = 0,
424 .x_aoi_d = 640,
425 .y_aoi_d = 0,
York Sun9b53a9e2008-04-28 02:15:34 -0700426 },
Timur Tabi2572df92011-09-28 16:19:51 -0500427 {
428 .index = PLANE2_AOI1,
Timur Tabi4a85dc8b2011-09-15 16:44:46 -0500429 .id = "Panel2 AOI1",
430 .registered = 0,
431 .g_alpha = 0xff,
432 .count = 0,
433 .x_aoi_d = 640,
434 .y_aoi_d = 480,
York Sun9b53a9e2008-04-28 02:15:34 -0700435 },
436};
437
Timur Tabi5cc2a362012-10-16 17:33:46 -0500438#ifdef DEBUG
439static void __attribute__ ((unused)) fsl_diu_dump(struct diu __iomem *hw)
440{
441 mb();
Colin Ian King42f82362017-02-20 13:51:07 +0100442 pr_debug("DIU: desc=%08x,%08x,%08x, gamma=%08x palette=%08x "
Timur Tabi5cc2a362012-10-16 17:33:46 -0500443 "cursor=%08x curs_pos=%08x diu_mode=%08x bgnd=%08x "
444 "disp_size=%08x hsyn_para=%08x vsyn_para=%08x syn_pol=%08x "
445 "thresholds=%08x int_mask=%08x plut=%08x\n",
446 hw->desc[0], hw->desc[1], hw->desc[2], hw->gamma,
Colin Ian King42f82362017-02-20 13:51:07 +0100447 hw->palette, hw->cursor, hw->curs_pos, hw->diu_mode,
Timur Tabi5cc2a362012-10-16 17:33:46 -0500448 hw->bgnd, hw->disp_size, hw->hsyn_para, hw->vsyn_para,
449 hw->syn_pol, hw->thresholds, hw->int_mask, hw->plut);
450 rmb();
451}
452#endif
453
Timur Tabi6b51d512008-07-23 21:31:39 -0700454/**
Timur Tabi7653aaa2011-07-09 15:38:14 -0500455 * fsl_diu_name_to_port - convert a port name to a monitor port enum
456 *
457 * Takes the name of a monitor port ("dvi", "lvds", or "dlvds") and returns
458 * the enum fsl_diu_monitor_port that corresponds to that string.
459 *
460 * For compatibility with older versions, a number ("0", "1", or "2") is also
461 * supported.
462 *
463 * If the string is unknown, DVI is assumed.
464 *
465 * If the particular port is not supported by the platform, another port
466 * (platform-specific) is chosen instead.
467 */
468static enum fsl_diu_monitor_port fsl_diu_name_to_port(const char *s)
469{
470 enum fsl_diu_monitor_port port = FSL_DIU_PORT_DVI;
471 unsigned long val;
472
473 if (s) {
Jingoo Hanf5725af2013-06-01 16:31:21 +0900474 if (!kstrtoul(s, 10, &val) && (val <= 2))
Timur Tabi7653aaa2011-07-09 15:38:14 -0500475 port = (enum fsl_diu_monitor_port) val;
476 else if (strncmp(s, "lvds", 4) == 0)
477 port = FSL_DIU_PORT_LVDS;
478 else if (strncmp(s, "dlvds", 5) == 0)
479 port = FSL_DIU_PORT_DLVDS;
480 }
481
Wang Dongshengacfc1cc2015-12-03 09:54:12 +0800482 if (diu_ops.valid_monitor_port)
483 port = diu_ops.valid_monitor_port(port);
484
485 return port;
Timur Tabi7653aaa2011-07-09 15:38:14 -0500486}
487
Anatolij Gustschin0d9dab32010-07-23 04:00:35 +0000488/*
489 * Workaround for failed writing desc register of planes.
490 * Needed with MPC5121 DIU rev 2.0 silicon.
491 */
492void wr_reg_wa(u32 *reg, u32 val)
493{
494 do {
495 out_be32(reg, val);
496 } while (in_be32(reg) != val);
497}
498
Timur Tabi7e47c212011-09-28 16:19:52 -0500499static void fsl_diu_enable_panel(struct fb_info *info)
York Sun9b53a9e2008-04-28 02:15:34 -0700500{
501 struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
York Sun9b53a9e2008-04-28 02:15:34 -0700502 struct diu_ad *ad = mfbi->ad;
Timur Tabib7795052011-12-08 17:27:31 -0600503 struct fsl_diu_data *data = mfbi->parent;
504 struct diu __iomem *hw = data->diu_reg;
York Sun9b53a9e2008-04-28 02:15:34 -0700505
Timur Tabi7e47c212011-09-28 16:19:52 -0500506 switch (mfbi->index) {
507 case PLANE0:
Timur Tabi7af3b132012-10-16 17:33:48 -0500508 wr_reg_wa(&hw->desc[0], ad->paddr);
Timur Tabi7e47c212011-09-28 16:19:52 -0500509 break;
510 case PLANE1_AOI0:
Timur Tabib7795052011-12-08 17:27:31 -0600511 cmfbi = &data->mfb[2];
Timur Tabi7e47c212011-09-28 16:19:52 -0500512 if (hw->desc[1] != ad->paddr) { /* AOI0 closed */
513 if (cmfbi->count > 0) /* AOI1 open */
514 ad->next_ad =
515 cpu_to_le32(cmfbi->ad->paddr);
516 else
517 ad->next_ad = 0;
518 wr_reg_wa(&hw->desc[1], ad->paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700519 }
Timur Tabi7e47c212011-09-28 16:19:52 -0500520 break;
521 case PLANE2_AOI0:
Timur Tabib7795052011-12-08 17:27:31 -0600522 cmfbi = &data->mfb[4];
Timur Tabi7e47c212011-09-28 16:19:52 -0500523 if (hw->desc[2] != ad->paddr) { /* AOI0 closed */
524 if (cmfbi->count > 0) /* AOI1 open */
525 ad->next_ad =
526 cpu_to_le32(cmfbi->ad->paddr);
527 else
528 ad->next_ad = 0;
529 wr_reg_wa(&hw->desc[2], ad->paddr);
530 }
531 break;
532 case PLANE1_AOI1:
Timur Tabib7795052011-12-08 17:27:31 -0600533 pmfbi = &data->mfb[1];
Timur Tabi7e47c212011-09-28 16:19:52 -0500534 ad->next_ad = 0;
Timur Tabib7795052011-12-08 17:27:31 -0600535 if (hw->desc[1] == data->dummy_ad.paddr)
Timur Tabi7e47c212011-09-28 16:19:52 -0500536 wr_reg_wa(&hw->desc[1], ad->paddr);
537 else /* AOI0 open */
538 pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
539 break;
540 case PLANE2_AOI1:
Timur Tabib7795052011-12-08 17:27:31 -0600541 pmfbi = &data->mfb[3];
Timur Tabi7e47c212011-09-28 16:19:52 -0500542 ad->next_ad = 0;
Timur Tabib7795052011-12-08 17:27:31 -0600543 if (hw->desc[2] == data->dummy_ad.paddr)
Timur Tabi7e47c212011-09-28 16:19:52 -0500544 wr_reg_wa(&hw->desc[2], ad->paddr);
545 else /* AOI0 was open */
546 pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
547 break;
548 }
York Sun9b53a9e2008-04-28 02:15:34 -0700549}
550
Timur Tabi2572df92011-09-28 16:19:51 -0500551static void fsl_diu_disable_panel(struct fb_info *info)
York Sun9b53a9e2008-04-28 02:15:34 -0700552{
553 struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
York Sun9b53a9e2008-04-28 02:15:34 -0700554 struct diu_ad *ad = mfbi->ad;
Timur Tabib7795052011-12-08 17:27:31 -0600555 struct fsl_diu_data *data = mfbi->parent;
556 struct diu __iomem *hw = data->diu_reg;
York Sun9b53a9e2008-04-28 02:15:34 -0700557
558 switch (mfbi->index) {
Timur Tabi2572df92011-09-28 16:19:51 -0500559 case PLANE0:
Timur Tabi7af3b132012-10-16 17:33:48 -0500560 wr_reg_wa(&hw->desc[0], 0);
York Sun9b53a9e2008-04-28 02:15:34 -0700561 break;
Timur Tabi2572df92011-09-28 16:19:51 -0500562 case PLANE1_AOI0:
Timur Tabib7795052011-12-08 17:27:31 -0600563 cmfbi = &data->mfb[2];
York Sun9b53a9e2008-04-28 02:15:34 -0700564 if (cmfbi->count > 0) /* AOI1 is open */
Anatolij Gustschin0d9dab32010-07-23 04:00:35 +0000565 wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700566 /* move AOI1 to the first */
567 else /* AOI1 was closed */
Timur Tabib7795052011-12-08 17:27:31 -0600568 wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700569 /* close AOI 0 */
570 break;
Timur Tabi2572df92011-09-28 16:19:51 -0500571 case PLANE2_AOI0:
Timur Tabib7795052011-12-08 17:27:31 -0600572 cmfbi = &data->mfb[4];
York Sun9b53a9e2008-04-28 02:15:34 -0700573 if (cmfbi->count > 0) /* AOI1 is open */
Anatolij Gustschin0d9dab32010-07-23 04:00:35 +0000574 wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700575 /* move AOI1 to the first */
576 else /* AOI1 was closed */
Timur Tabib7795052011-12-08 17:27:31 -0600577 wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700578 /* close AOI 0 */
579 break;
Timur Tabi2572df92011-09-28 16:19:51 -0500580 case PLANE1_AOI1:
Timur Tabib7795052011-12-08 17:27:31 -0600581 pmfbi = &data->mfb[1];
York Sun9b53a9e2008-04-28 02:15:34 -0700582 if (hw->desc[1] != ad->paddr) {
583 /* AOI1 is not the first in the chain */
584 if (pmfbi->count > 0)
585 /* AOI0 is open, must be the first */
586 pmfbi->ad->next_ad = 0;
587 } else /* AOI1 is the first in the chain */
Timur Tabib7795052011-12-08 17:27:31 -0600588 wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700589 /* close AOI 1 */
590 break;
Timur Tabi2572df92011-09-28 16:19:51 -0500591 case PLANE2_AOI1:
Timur Tabib7795052011-12-08 17:27:31 -0600592 pmfbi = &data->mfb[3];
York Sun9b53a9e2008-04-28 02:15:34 -0700593 if (hw->desc[2] != ad->paddr) {
594 /* AOI1 is not the first in the chain */
595 if (pmfbi->count > 0)
596 /* AOI0 is open, must be the first */
597 pmfbi->ad->next_ad = 0;
598 } else /* AOI1 is the first in the chain */
Timur Tabib7795052011-12-08 17:27:31 -0600599 wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr);
York Sun9b53a9e2008-04-28 02:15:34 -0700600 /* close AOI 1 */
601 break;
York Sun9b53a9e2008-04-28 02:15:34 -0700602 }
York Sun9b53a9e2008-04-28 02:15:34 -0700603}
604
605static void enable_lcdc(struct fb_info *info)
606{
York Sun9b53a9e2008-04-28 02:15:34 -0700607 struct mfb_info *mfbi = info->par;
Timur Tabib7795052011-12-08 17:27:31 -0600608 struct fsl_diu_data *data = mfbi->parent;
609 struct diu __iomem *hw = data->diu_reg;
York Sun9b53a9e2008-04-28 02:15:34 -0700610
Timur Tabid397e9162011-12-19 16:26:16 -0600611 out_be32(&hw->diu_mode, MFB_MODE1);
York Sun9b53a9e2008-04-28 02:15:34 -0700612}
613
614static void disable_lcdc(struct fb_info *info)
615{
York Sun9b53a9e2008-04-28 02:15:34 -0700616 struct mfb_info *mfbi = info->par;
Timur Tabib7795052011-12-08 17:27:31 -0600617 struct fsl_diu_data *data = mfbi->parent;
618 struct diu __iomem *hw = data->diu_reg;
York Sun9b53a9e2008-04-28 02:15:34 -0700619
Timur Tabid397e9162011-12-19 16:26:16 -0600620 out_be32(&hw->diu_mode, 0);
York Sun9b53a9e2008-04-28 02:15:34 -0700621}
622
623static void adjust_aoi_size_position(struct fb_var_screeninfo *var,
624 struct fb_info *info)
625{
626 struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par;
Timur Tabib7795052011-12-08 17:27:31 -0600627 struct fsl_diu_data *data = mfbi->parent;
Timur Tabi2572df92011-09-28 16:19:51 -0500628 int available_height, upper_aoi_bottom;
629 enum mfb_index index = mfbi->index;
York Sun9b53a9e2008-04-28 02:15:34 -0700630 int lower_aoi_is_open, upper_aoi_is_open;
631 __u32 base_plane_width, base_plane_height, upper_aoi_height;
632
Timur Tabib7795052011-12-08 17:27:31 -0600633 base_plane_width = data->fsl_diu_info[0].var.xres;
634 base_plane_height = data->fsl_diu_info[0].var.yres;
York Sun9b53a9e2008-04-28 02:15:34 -0700635
York Sunfdfaa482008-08-15 00:40:29 -0700636 if (mfbi->x_aoi_d < 0)
637 mfbi->x_aoi_d = 0;
638 if (mfbi->y_aoi_d < 0)
639 mfbi->y_aoi_d = 0;
York Sun9b53a9e2008-04-28 02:15:34 -0700640 switch (index) {
Timur Tabi2572df92011-09-28 16:19:51 -0500641 case PLANE0:
York Sun9b53a9e2008-04-28 02:15:34 -0700642 if (mfbi->x_aoi_d != 0)
643 mfbi->x_aoi_d = 0;
644 if (mfbi->y_aoi_d != 0)
645 mfbi->y_aoi_d = 0;
646 break;
Timur Tabi2572df92011-09-28 16:19:51 -0500647 case PLANE1_AOI0:
648 case PLANE2_AOI0:
Timur Tabib7795052011-12-08 17:27:31 -0600649 lower_aoi_mfbi = data->fsl_diu_info[index+1].par;
York Sun9b53a9e2008-04-28 02:15:34 -0700650 lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0;
651 if (var->xres > base_plane_width)
652 var->xres = base_plane_width;
653 if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
654 mfbi->x_aoi_d = base_plane_width - var->xres;
655
656 if (lower_aoi_is_open)
657 available_height = lower_aoi_mfbi->y_aoi_d;
658 else
659 available_height = base_plane_height;
660 if (var->yres > available_height)
661 var->yres = available_height;
662 if ((mfbi->y_aoi_d + var->yres) > available_height)
663 mfbi->y_aoi_d = available_height - var->yres;
664 break;
Timur Tabi2572df92011-09-28 16:19:51 -0500665 case PLANE1_AOI1:
666 case PLANE2_AOI1:
Timur Tabib7795052011-12-08 17:27:31 -0600667 upper_aoi_mfbi = data->fsl_diu_info[index-1].par;
668 upper_aoi_height = data->fsl_diu_info[index-1].var.yres;
York Sun9b53a9e2008-04-28 02:15:34 -0700669 upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height;
670 upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0;
671 if (var->xres > base_plane_width)
672 var->xres = base_plane_width;
673 if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
674 mfbi->x_aoi_d = base_plane_width - var->xres;
675 if (mfbi->y_aoi_d < 0)
676 mfbi->y_aoi_d = 0;
677 if (upper_aoi_is_open) {
678 if (mfbi->y_aoi_d < upper_aoi_bottom)
679 mfbi->y_aoi_d = upper_aoi_bottom;
680 available_height = base_plane_height
681 - upper_aoi_bottom;
682 } else
683 available_height = base_plane_height;
684 if (var->yres > available_height)
685 var->yres = available_height;
686 if ((mfbi->y_aoi_d + var->yres) > base_plane_height)
687 mfbi->y_aoi_d = base_plane_height - var->yres;
688 break;
689 }
690}
691/*
692 * Checks to see if the hardware supports the state requested by var passed
693 * in. This function does not alter the hardware state! If the var passed in
694 * is slightly off by what the hardware can support then we alter the var
695 * PASSED in to what we can do. If the hardware doesn't support mode change
696 * a -EINVAL will be returned by the upper layers.
697 */
698static int fsl_diu_check_var(struct fb_var_screeninfo *var,
699 struct fb_info *info)
700{
York Sun9b53a9e2008-04-28 02:15:34 -0700701 if (var->xres_virtual < var->xres)
702 var->xres_virtual = var->xres;
703 if (var->yres_virtual < var->yres)
704 var->yres_virtual = var->yres;
705
York Sun9b53a9e2008-04-28 02:15:34 -0700706 if (var->xoffset + info->var.xres > info->var.xres_virtual)
707 var->xoffset = info->var.xres_virtual - info->var.xres;
708
709 if (var->yoffset + info->var.yres > info->var.yres_virtual)
710 var->yoffset = info->var.yres_virtual - info->var.yres;
711
712 if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
713 (var->bits_per_pixel != 16))
714 var->bits_per_pixel = default_bpp;
715
716 switch (var->bits_per_pixel) {
717 case 16:
718 var->red.length = 5;
719 var->red.offset = 11;
720 var->red.msb_right = 0;
721
722 var->green.length = 6;
723 var->green.offset = 5;
724 var->green.msb_right = 0;
725
726 var->blue.length = 5;
727 var->blue.offset = 0;
728 var->blue.msb_right = 0;
729
730 var->transp.length = 0;
731 var->transp.offset = 0;
732 var->transp.msb_right = 0;
733 break;
734 case 24:
735 var->red.length = 8;
736 var->red.offset = 0;
737 var->red.msb_right = 0;
738
739 var->green.length = 8;
740 var->green.offset = 8;
741 var->green.msb_right = 0;
742
743 var->blue.length = 8;
744 var->blue.offset = 16;
745 var->blue.msb_right = 0;
746
747 var->transp.length = 0;
748 var->transp.offset = 0;
749 var->transp.msb_right = 0;
750 break;
751 case 32:
752 var->red.length = 8;
753 var->red.offset = 16;
754 var->red.msb_right = 0;
755
756 var->green.length = 8;
757 var->green.offset = 8;
758 var->green.msb_right = 0;
759
760 var->blue.length = 8;
761 var->blue.offset = 0;
762 var->blue.msb_right = 0;
763
764 var->transp.length = 8;
765 var->transp.offset = 24;
766 var->transp.msb_right = 0;
767
768 break;
769 }
York Sun9b53a9e2008-04-28 02:15:34 -0700770
771 var->height = -1;
772 var->width = -1;
773 var->grayscale = 0;
774
775 /* Copy nonstd field to/from sync for fbset usage */
776 var->sync |= var->nonstd;
777 var->nonstd |= var->sync;
778
779 adjust_aoi_size_position(var, info);
780 return 0;
781}
782
783static void set_fix(struct fb_info *info)
784{
785 struct fb_fix_screeninfo *fix = &info->fix;
786 struct fb_var_screeninfo *var = &info->var;
787 struct mfb_info *mfbi = info->par;
788
Timur Tabiec02dd22011-09-15 16:44:54 -0500789 strncpy(fix->id, mfbi->id, sizeof(fix->id));
York Sun9b53a9e2008-04-28 02:15:34 -0700790 fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
791 fix->type = FB_TYPE_PACKED_PIXELS;
792 fix->accel = FB_ACCEL_NONE;
793 fix->visual = FB_VISUAL_TRUECOLOR;
794 fix->xpanstep = 1;
795 fix->ypanstep = 1;
796}
797
798static void update_lcdc(struct fb_info *info)
799{
800 struct fb_var_screeninfo *var = &info->var;
801 struct mfb_info *mfbi = info->par;
Timur Tabib7795052011-12-08 17:27:31 -0600802 struct fsl_diu_data *data = mfbi->parent;
Timur Tabi3c755b72011-10-04 19:36:51 -0500803 struct diu __iomem *hw;
York Sun9b53a9e2008-04-28 02:15:34 -0700804 int i, j;
Timur Tabiddd3d902011-12-02 17:03:27 -0600805 u8 *gamma_table_base;
York Sun9b53a9e2008-04-28 02:15:34 -0700806
807 u32 temp;
808
Timur Tabib7795052011-12-08 17:27:31 -0600809 hw = data->diu_reg;
York Sun9b53a9e2008-04-28 02:15:34 -0700810
Timur Tabi28671732012-10-16 17:33:43 -0500811 if (diu_ops.set_monitor_port)
812 diu_ops.set_monitor_port(data->monitor_port);
Timur Tabib7795052011-12-08 17:27:31 -0600813 gamma_table_base = data->gamma;
Timur Tabiddd3d902011-12-02 17:03:27 -0600814
York Sun9b53a9e2008-04-28 02:15:34 -0700815 /* Prep for DIU init - gamma table, cursor table */
816
817 for (i = 0; i <= 2; i++)
Timur Tabi4a85dc8b2011-09-15 16:44:46 -0500818 for (j = 0; j <= 255; j++)
819 *gamma_table_base++ = j;
York Sun9b53a9e2008-04-28 02:15:34 -0700820
Timur Tabie09a8c32011-12-19 16:26:17 -0600821 if (diu_ops.set_gamma_table)
822 diu_ops.set_gamma_table(data->monitor_port, data->gamma);
York Sun9b53a9e2008-04-28 02:15:34 -0700823
York Sun9b53a9e2008-04-28 02:15:34 -0700824 disable_lcdc(info);
825
826 /* Program DIU registers */
827
Timur Tabib7795052011-12-08 17:27:31 -0600828 out_be32(&hw->gamma, DMA_ADDR(data, gamma));
York Sun9b53a9e2008-04-28 02:15:34 -0700829
Timur Tabiceb001b2012-10-16 17:33:49 -0500830 out_be32(&hw->bgnd, 0x007F7F7F); /* Set background to grey */
831 out_be32(&hw->disp_size, (var->yres << 16) | var->xres);
York Sun9b53a9e2008-04-28 02:15:34 -0700832
833 /* Horizontal and vertical configuration register */
834 temp = var->left_margin << 22 | /* BP_H */
835 var->hsync_len << 11 | /* PW_H */
836 var->right_margin; /* FP_H */
837
838 out_be32(&hw->hsyn_para, temp);
839
840 temp = var->upper_margin << 22 | /* BP_V */
841 var->vsync_len << 11 | /* PW_V */
842 var->lower_margin; /* FP_V */
843
844 out_be32(&hw->vsyn_para, temp);
845
York Sun9b53a9e2008-04-28 02:15:34 -0700846 diu_ops.set_pixel_clock(var->pixclock);
847
Timur Tabiceb001b2012-10-16 17:33:49 -0500848#ifndef CONFIG_PPC_MPC512x
849 /*
850 * The PLUT register is defined differently on the MPC5121 than it
851 * is on other SOCs. Unfortunately, there's no documentation that
852 * explains how it's supposed to be programmed, so for now, we leave
853 * it at the default value on the MPC5121.
854 *
855 * For other SOCs, program it for the highest priority, which will
856 * reduce the chance of underrun. Technically, we should scale the
857 * priority to match the screen resolution, but doing that properly
858 * requires delicate fine-tuning for each use-case.
859 */
York Sun9b53a9e2008-04-28 02:15:34 -0700860 out_be32(&hw->plut, 0x01F5F666);
Timur Tabiceb001b2012-10-16 17:33:49 -0500861#endif
York Sun9b53a9e2008-04-28 02:15:34 -0700862
863 /* Enable the DIU */
864 enable_lcdc(info);
865}
866
867static int map_video_memory(struct fb_info *info)
868{
Krzysztof Helt537a1bf2009-06-30 11:41:29 -0700869 u32 smem_len = info->fix.line_length * info->var.yres_virtual;
Timur Tabi05342c02011-12-19 16:26:18 -0600870 void *p;
York Sun9b53a9e2008-04-28 02:15:34 -0700871
Timur Tabi05342c02011-12-19 16:26:18 -0600872 p = alloc_pages_exact(smem_len, GFP_DMA | __GFP_ZERO);
873 if (!p) {
Timur Tabi154152a2011-09-15 16:44:47 -0500874 dev_err(info->dev, "unable to allocate fb memory\n");
York Sun9b53a9e2008-04-28 02:15:34 -0700875 return -ENOMEM;
876 }
Krzysztof Helt537a1bf2009-06-30 11:41:29 -0700877 mutex_lock(&info->mm_lock);
Timur Tabi05342c02011-12-19 16:26:18 -0600878 info->screen_base = p;
879 info->fix.smem_start = virt_to_phys(info->screen_base);
Krzysztof Helt537a1bf2009-06-30 11:41:29 -0700880 info->fix.smem_len = smem_len;
881 mutex_unlock(&info->mm_lock);
York Sun9b53a9e2008-04-28 02:15:34 -0700882 info->screen_size = info->fix.smem_len;
883
York Sun9b53a9e2008-04-28 02:15:34 -0700884 return 0;
885}
886
887static void unmap_video_memory(struct fb_info *info)
888{
Timur Tabi05342c02011-12-19 16:26:18 -0600889 void *p = info->screen_base;
890 size_t l = info->fix.smem_len;
891
Krzysztof Helt537a1bf2009-06-30 11:41:29 -0700892 mutex_lock(&info->mm_lock);
Anton Vorontsov05946bc2008-07-04 09:59:38 -0700893 info->screen_base = NULL;
York Sun9b53a9e2008-04-28 02:15:34 -0700894 info->fix.smem_start = 0;
895 info->fix.smem_len = 0;
Krzysztof Helt537a1bf2009-06-30 11:41:29 -0700896 mutex_unlock(&info->mm_lock);
Timur Tabi05342c02011-12-19 16:26:18 -0600897
898 if (p)
899 free_pages_exact(p, l);
York Sun9b53a9e2008-04-28 02:15:34 -0700900}
901
902/*
York Sunae5591e2008-08-15 00:40:28 -0700903 * Using the fb_var_screeninfo in fb_info we set the aoi of this
904 * particular framebuffer. It is a light version of fsl_diu_set_par.
905 */
906static int fsl_diu_set_aoi(struct fb_info *info)
907{
908 struct fb_var_screeninfo *var = &info->var;
909 struct mfb_info *mfbi = info->par;
910 struct diu_ad *ad = mfbi->ad;
911
912 /* AOI should not be greater than display size */
913 ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
914 ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
915 return 0;
916}
917
Timur Tabie09a8c32011-12-19 16:26:17 -0600918/**
919 * fsl_diu_get_pixel_format: return the pixel format for a given color depth
920 *
921 * The pixel format is a 32-bit value that determine which bits in each
922 * pixel are to be used for each color. This is the default function used
923 * if the platform does not define its own version.
924 */
925static u32 fsl_diu_get_pixel_format(unsigned int bits_per_pixel)
926{
927#define PF_BYTE_F 0x10000000
928#define PF_ALPHA_C_MASK 0x0E000000
929#define PF_ALPHA_C_SHIFT 25
930#define PF_BLUE_C_MASK 0x01800000
931#define PF_BLUE_C_SHIFT 23
932#define PF_GREEN_C_MASK 0x00600000
933#define PF_GREEN_C_SHIFT 21
934#define PF_RED_C_MASK 0x00180000
935#define PF_RED_C_SHIFT 19
936#define PF_PALETTE 0x00040000
937#define PF_PIXEL_S_MASK 0x00030000
938#define PF_PIXEL_S_SHIFT 16
939#define PF_COMP_3_MASK 0x0000F000
940#define PF_COMP_3_SHIFT 12
941#define PF_COMP_2_MASK 0x00000F00
942#define PF_COMP_2_SHIFT 8
943#define PF_COMP_1_MASK 0x000000F0
944#define PF_COMP_1_SHIFT 4
945#define PF_COMP_0_MASK 0x0000000F
946#define PF_COMP_0_SHIFT 0
947
Anatolij Gustschin5d3cc312013-01-17 21:28:37 +0100948#define MAKE_PF(alpha, red, green, blue, size, c0, c1, c2, c3) \
Timur Tabie09a8c32011-12-19 16:26:17 -0600949 cpu_to_le32(PF_BYTE_F | (alpha << PF_ALPHA_C_SHIFT) | \
950 (blue << PF_BLUE_C_SHIFT) | (green << PF_GREEN_C_SHIFT) | \
951 (red << PF_RED_C_SHIFT) | (c3 << PF_COMP_3_SHIFT) | \
952 (c2 << PF_COMP_2_SHIFT) | (c1 << PF_COMP_1_SHIFT) | \
953 (c0 << PF_COMP_0_SHIFT) | (size << PF_PIXEL_S_SHIFT))
954
955 switch (bits_per_pixel) {
956 case 32:
957 /* 0x88883316 */
Anatolij Gustschin5d3cc312013-01-17 21:28:37 +0100958 return MAKE_PF(3, 2, 1, 0, 3, 8, 8, 8, 8);
Timur Tabie09a8c32011-12-19 16:26:17 -0600959 case 24:
960 /* 0x88082219 */
Anatolij Gustschin5d3cc312013-01-17 21:28:37 +0100961 return MAKE_PF(4, 0, 1, 2, 2, 8, 8, 8, 0);
Timur Tabie09a8c32011-12-19 16:26:17 -0600962 case 16:
963 /* 0x65053118 */
964 return MAKE_PF(4, 2, 1, 0, 1, 5, 6, 5, 0);
965 default:
966 pr_err("fsl-diu: unsupported color depth %u\n", bits_per_pixel);
967 return 0;
968 }
969}
970
York Sunae5591e2008-08-15 00:40:28 -0700971/*
Timur Tabi38dd2da2013-03-30 02:36:00 +0200972 * Copies a cursor image from user space to the proper place in driver
973 * memory so that the hardware can display the cursor image.
974 *
975 * Cursor data is represented as a sequence of 'width' bits packed into bytes.
976 * That is, the first 8 bits are in the first byte, the second 8 bits in the
977 * second byte, and so on. Therefore, the each row of the cursor is (width +
978 * 7) / 8 bytes of 'data'
979 *
980 * The DIU only supports cursors up to 32x32 (MAX_CURS). We reject cursors
981 * larger than this, so we already know that 'width' <= 32. Therefore, we can
982 * simplify our code by using a 32-bit big-endian integer ("line") to read in
983 * a single line of pixels, and only look at the top 'width' bits of that
984 * integer.
985 *
986 * This could result in an unaligned 32-bit read. For example, if the cursor
987 * is 24x24, then the first three bytes of 'image' contain the pixel data for
988 * the top line of the cursor. We do a 32-bit read of 'image', but we look
989 * only at the top 24 bits. Then we increment 'image' by 3 bytes. The next
990 * read is unaligned. The only problem is that we might read past the end of
991 * 'image' by 1-3 bytes, but that should not cause any problems.
992 */
993static void fsl_diu_load_cursor_image(struct fb_info *info,
994 const void *image, uint16_t bg, uint16_t fg,
995 unsigned int width, unsigned int height)
996{
997 struct mfb_info *mfbi = info->par;
998 struct fsl_diu_data *data = mfbi->parent;
999 __le16 *cursor = data->cursor;
1000 __le16 _fg = cpu_to_le16(fg);
1001 __le16 _bg = cpu_to_le16(bg);
1002 unsigned int h, w;
1003
1004 for (h = 0; h < height; h++) {
1005 uint32_t mask = 1 << 31;
1006 uint32_t line = be32_to_cpup(image);
1007
1008 for (w = 0; w < width; w++) {
1009 cursor[w] = (line & mask) ? _fg : _bg;
1010 mask >>= 1;
1011 }
1012
1013 cursor += MAX_CURS;
1014 image += DIV_ROUND_UP(width, 8);
1015 }
1016}
1017
1018/*
1019 * Set a hardware cursor. The image data for the cursor is passed via the
1020 * fb_cursor object.
1021 */
1022static int fsl_diu_cursor(struct fb_info *info, struct fb_cursor *cursor)
1023{
1024 struct mfb_info *mfbi = info->par;
1025 struct fsl_diu_data *data = mfbi->parent;
1026 struct diu __iomem *hw = data->diu_reg;
1027
1028 if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS)
1029 return -EINVAL;
1030
1031 /* The cursor size has changed */
1032 if (cursor->set & FB_CUR_SETSIZE) {
1033 /*
1034 * The DIU cursor is a fixed size, so when we get this
1035 * message, instead of resizing the cursor, we just clear
1036 * all the image data, in expectation of new data. However,
1037 * in tests this control does not appear to be normally
1038 * called.
1039 */
1040 memset(data->cursor, 0, sizeof(data->cursor));
1041 }
1042
1043 /* The cursor position has changed (cursor->image.dx|dy) */
1044 if (cursor->set & FB_CUR_SETPOS) {
1045 uint32_t xx, yy;
1046
1047 yy = (cursor->image.dy - info->var.yoffset) & 0x7ff;
1048 xx = (cursor->image.dx - info->var.xoffset) & 0x7ff;
1049
1050 out_be32(&hw->curs_pos, yy << 16 | xx);
1051 }
1052
1053 /*
1054 * FB_CUR_SETIMAGE - the cursor image has changed
1055 * FB_CUR_SETCMAP - the cursor colors has changed
1056 * FB_CUR_SETSHAPE - the cursor bitmask has changed
1057 */
1058 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETCMAP | FB_CUR_SETIMAGE)) {
1059 unsigned int image_size =
1060 DIV_ROUND_UP(cursor->image.width, 8) * cursor->image.height;
1061 unsigned int image_words =
1062 DIV_ROUND_UP(image_size, sizeof(uint32_t));
1063 unsigned int bg_idx = cursor->image.bg_color;
1064 unsigned int fg_idx = cursor->image.fg_color;
1065 uint8_t buffer[image_size];
1066 uint32_t *image, *source, *mask;
1067 uint16_t fg, bg;
1068 unsigned int i;
1069
1070 if (info->state != FBINFO_STATE_RUNNING)
1071 return 0;
1072
1073 /*
1074 * Determine the size of the cursor image data. Normally,
1075 * it's 8x16.
1076 */
1077 image_size = DIV_ROUND_UP(cursor->image.width, 8) *
1078 cursor->image.height;
1079
1080 bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) |
1081 ((info->cmap.green[bg_idx] & 0xf8) << 2) |
1082 ((info->cmap.blue[bg_idx] & 0xf8) >> 3) |
1083 1 << 15;
1084
1085 fg = ((info->cmap.red[fg_idx] & 0xf8) << 7) |
1086 ((info->cmap.green[fg_idx] & 0xf8) << 2) |
1087 ((info->cmap.blue[fg_idx] & 0xf8) >> 3) |
1088 1 << 15;
1089
1090 /* Use 32-bit operations on the data to improve performance */
1091 image = (uint32_t *)buffer;
1092 source = (uint32_t *)cursor->image.data;
1093 mask = (uint32_t *)cursor->mask;
1094
1095 if (cursor->rop == ROP_XOR)
1096 for (i = 0; i < image_words; i++)
1097 image[i] = source[i] ^ mask[i];
1098 else
1099 for (i = 0; i < image_words; i++)
1100 image[i] = source[i] & mask[i];
1101
1102 fsl_diu_load_cursor_image(info, image, bg, fg,
1103 cursor->image.width, cursor->image.height);
Joe Perchescf6ac4ce2013-10-08 16:23:24 -07001104 }
Timur Tabi38dd2da2013-03-30 02:36:00 +02001105
1106 /*
1107 * Show or hide the cursor. The cursor data is always stored in the
1108 * 'cursor' memory block, and the actual cursor position is always in
1109 * the DIU's CURS_POS register. To hide the cursor, we redirect the
1110 * CURSOR register to a blank cursor. The show the cursor, we
1111 * redirect the CURSOR register to the real cursor data.
1112 */
1113 if (cursor->enable)
1114 out_be32(&hw->cursor, DMA_ADDR(data, cursor));
1115 else
1116 out_be32(&hw->cursor, DMA_ADDR(data, blank_cursor));
1117
1118 return 0;
1119}
1120
1121/*
York Sun9b53a9e2008-04-28 02:15:34 -07001122 * Using the fb_var_screeninfo in fb_info we set the resolution of this
1123 * particular framebuffer. This function alters the fb_fix_screeninfo stored
1124 * in fb_info. It does not alter var in fb_info since we are using that
1125 * data. This means we depend on the data in var inside fb_info to be
1126 * supported by the hardware. fsl_diu_check_var is always called before
1127 * fsl_diu_set_par to ensure this.
1128 */
1129static int fsl_diu_set_par(struct fb_info *info)
1130{
1131 unsigned long len;
1132 struct fb_var_screeninfo *var = &info->var;
1133 struct mfb_info *mfbi = info->par;
Timur Tabib7795052011-12-08 17:27:31 -06001134 struct fsl_diu_data *data = mfbi->parent;
York Sun9b53a9e2008-04-28 02:15:34 -07001135 struct diu_ad *ad = mfbi->ad;
Timur Tabi3c755b72011-10-04 19:36:51 -05001136 struct diu __iomem *hw;
York Sun9b53a9e2008-04-28 02:15:34 -07001137
Timur Tabib7795052011-12-08 17:27:31 -06001138 hw = data->diu_reg;
York Sun9b53a9e2008-04-28 02:15:34 -07001139
1140 set_fix(info);
York Sun9b53a9e2008-04-28 02:15:34 -07001141
1142 len = info->var.yres_virtual * info->fix.line_length;
1143 /* Alloc & dealloc each time resolution/bpp change */
1144 if (len != info->fix.smem_len) {
1145 if (info->fix.smem_start)
1146 unmap_video_memory(info);
York Sun9b53a9e2008-04-28 02:15:34 -07001147
1148 /* Memory allocation for framebuffer */
1149 if (map_video_memory(info)) {
Timur Tabi154152a2011-09-15 16:44:47 -05001150 dev_err(info->dev, "unable to allocate fb memory 1\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001151 return -ENOMEM;
1152 }
1153 }
1154
Timur Tabie09a8c32011-12-19 16:26:17 -06001155 if (diu_ops.get_pixel_format)
1156 ad->pix_fmt = diu_ops.get_pixel_format(data->monitor_port,
1157 var->bits_per_pixel);
1158 else
1159 ad->pix_fmt = fsl_diu_get_pixel_format(var->bits_per_pixel);
1160
York Sun9b53a9e2008-04-28 02:15:34 -07001161 ad->addr = cpu_to_le32(info->fix.smem_start);
York Sunae5591e2008-08-15 00:40:28 -07001162 ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) |
1163 var->xres_virtual) | mfbi->g_alpha;
1164 /* AOI should not be greater than display size */
York Sun9b53a9e2008-04-28 02:15:34 -07001165 ad->aoi_size = cpu_to_le32((var->yres << 16) | var->xres);
York Sunae5591e2008-08-15 00:40:28 -07001166 ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
York Sun9b53a9e2008-04-28 02:15:34 -07001167 ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
1168
1169 /* Disable chroma keying function */
1170 ad->ckmax_r = 0;
1171 ad->ckmax_g = 0;
1172 ad->ckmax_b = 0;
1173
1174 ad->ckmin_r = 255;
1175 ad->ckmin_g = 255;
1176 ad->ckmin_b = 255;
1177
Timur Tabi2572df92011-09-28 16:19:51 -05001178 if (mfbi->index == PLANE0)
York Sun9b53a9e2008-04-28 02:15:34 -07001179 update_lcdc(info);
1180 return 0;
1181}
1182
1183static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
1184{
Timur Tabi4a85dc8b2011-09-15 16:44:46 -05001185 return ((val << width) + 0x7FFF - val) >> 16;
York Sun9b53a9e2008-04-28 02:15:34 -07001186}
1187
1188/*
1189 * Set a single color register. The values supplied have a 16 bit magnitude
1190 * which needs to be scaled in this function for the hardware. Things to take
1191 * into consideration are how many color registers, if any, are supported with
1192 * the current color visual. With truecolor mode no color palettes are
Lucas De Marchi25985ed2011-03-30 22:57:33 -03001193 * supported. Here a pseudo palette is created which we store the value in
York Sun9b53a9e2008-04-28 02:15:34 -07001194 * pseudo_palette in struct fb_info. For pseudocolor mode we have a limited
1195 * color palette.
1196 */
Timur Tabi4a85dc8b2011-09-15 16:44:46 -05001197static int fsl_diu_setcolreg(unsigned int regno, unsigned int red,
1198 unsigned int green, unsigned int blue,
1199 unsigned int transp, struct fb_info *info)
York Sun9b53a9e2008-04-28 02:15:34 -07001200{
1201 int ret = 1;
1202
1203 /*
1204 * If greyscale is true, then we convert the RGB value
1205 * to greyscale no matter what visual we are using.
1206 */
1207 if (info->var.grayscale)
1208 red = green = blue = (19595 * red + 38470 * green +
1209 7471 * blue) >> 16;
1210 switch (info->fix.visual) {
1211 case FB_VISUAL_TRUECOLOR:
1212 /*
1213 * 16-bit True Colour. We encode the RGB value
1214 * according to the RGB bitfield information.
1215 */
1216 if (regno < 16) {
1217 u32 *pal = info->pseudo_palette;
1218 u32 v;
1219
1220 red = CNVT_TOHW(red, info->var.red.length);
1221 green = CNVT_TOHW(green, info->var.green.length);
1222 blue = CNVT_TOHW(blue, info->var.blue.length);
1223 transp = CNVT_TOHW(transp, info->var.transp.length);
1224
1225 v = (red << info->var.red.offset) |
1226 (green << info->var.green.offset) |
1227 (blue << info->var.blue.offset) |
1228 (transp << info->var.transp.offset);
1229
1230 pal[regno] = v;
1231 ret = 0;
1232 }
1233 break;
York Sun9b53a9e2008-04-28 02:15:34 -07001234 }
1235
1236 return ret;
1237}
1238
1239/*
1240 * Pan (or wrap, depending on the `vmode' field) the display using the
1241 * 'xoffset' and 'yoffset' fields of the 'var' structure. If the values
1242 * don't fit, return -EINVAL.
1243 */
1244static int fsl_diu_pan_display(struct fb_var_screeninfo *var,
1245 struct fb_info *info)
1246{
1247 if ((info->var.xoffset == var->xoffset) &&
1248 (info->var.yoffset == var->yoffset))
1249 return 0; /* No change, do nothing */
1250
Sachin Shukla07049162017-02-08 16:44:00 +01001251 if (var->xoffset + info->var.xres > info->var.xres_virtual
York Sun9b53a9e2008-04-28 02:15:34 -07001252 || var->yoffset + info->var.yres > info->var.yres_virtual)
1253 return -EINVAL;
1254
1255 info->var.xoffset = var->xoffset;
1256 info->var.yoffset = var->yoffset;
1257
1258 if (var->vmode & FB_VMODE_YWRAP)
1259 info->var.vmode |= FB_VMODE_YWRAP;
1260 else
1261 info->var.vmode &= ~FB_VMODE_YWRAP;
1262
York Sunae5591e2008-08-15 00:40:28 -07001263 fsl_diu_set_aoi(info);
1264
York Sun9b53a9e2008-04-28 02:15:34 -07001265 return 0;
1266}
1267
York Sun9b53a9e2008-04-28 02:15:34 -07001268static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd,
1269 unsigned long arg)
1270{
1271 struct mfb_info *mfbi = info->par;
1272 struct diu_ad *ad = mfbi->ad;
1273 struct mfb_chroma_key ck;
1274 unsigned char global_alpha;
1275 struct aoi_display_offset aoi_d;
1276 __u32 pix_fmt;
1277 void __user *buf = (void __user *)arg;
1278
1279 if (!arg)
1280 return -EINVAL;
Timur Tabi5cc2a362012-10-16 17:33:46 -05001281
1282 dev_dbg(info->dev, "ioctl %08x (dir=%s%s type=%u nr=%u size=%u)\n", cmd,
1283 _IOC_DIR(cmd) & _IOC_READ ? "R" : "",
1284 _IOC_DIR(cmd) & _IOC_WRITE ? "W" : "",
1285 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
1286
York Sun9b53a9e2008-04-28 02:15:34 -07001287 switch (cmd) {
Timur Tabi36b0b1d2011-10-04 19:36:44 -05001288 case MFB_SET_PIXFMT_OLD:
1289 dev_warn(info->dev,
1290 "MFB_SET_PIXFMT value of 0x%08x is deprecated.\n",
1291 MFB_SET_PIXFMT_OLD);
York Sun9b53a9e2008-04-28 02:15:34 -07001292 case MFB_SET_PIXFMT:
1293 if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt)))
1294 return -EFAULT;
1295 ad->pix_fmt = pix_fmt;
York Sun9b53a9e2008-04-28 02:15:34 -07001296 break;
Timur Tabi36b0b1d2011-10-04 19:36:44 -05001297 case MFB_GET_PIXFMT_OLD:
1298 dev_warn(info->dev,
1299 "MFB_GET_PIXFMT value of 0x%08x is deprecated.\n",
1300 MFB_GET_PIXFMT_OLD);
York Sun9b53a9e2008-04-28 02:15:34 -07001301 case MFB_GET_PIXFMT:
1302 pix_fmt = ad->pix_fmt;
1303 if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt)))
1304 return -EFAULT;
York Sun9b53a9e2008-04-28 02:15:34 -07001305 break;
1306 case MFB_SET_AOID:
1307 if (copy_from_user(&aoi_d, buf, sizeof(aoi_d)))
1308 return -EFAULT;
1309 mfbi->x_aoi_d = aoi_d.x_aoi_d;
1310 mfbi->y_aoi_d = aoi_d.y_aoi_d;
York Sun9b53a9e2008-04-28 02:15:34 -07001311 fsl_diu_check_var(&info->var, info);
York Sunae5591e2008-08-15 00:40:28 -07001312 fsl_diu_set_aoi(info);
York Sun9b53a9e2008-04-28 02:15:34 -07001313 break;
1314 case MFB_GET_AOID:
1315 aoi_d.x_aoi_d = mfbi->x_aoi_d;
1316 aoi_d.y_aoi_d = mfbi->y_aoi_d;
1317 if (copy_to_user(buf, &aoi_d, sizeof(aoi_d)))
1318 return -EFAULT;
York Sun9b53a9e2008-04-28 02:15:34 -07001319 break;
1320 case MFB_GET_ALPHA:
1321 global_alpha = mfbi->g_alpha;
1322 if (copy_to_user(buf, &global_alpha, sizeof(global_alpha)))
1323 return -EFAULT;
York Sun9b53a9e2008-04-28 02:15:34 -07001324 break;
1325 case MFB_SET_ALPHA:
1326 /* set panel information */
1327 if (copy_from_user(&global_alpha, buf, sizeof(global_alpha)))
1328 return -EFAULT;
1329 ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) |
1330 (global_alpha & 0xff);
1331 mfbi->g_alpha = global_alpha;
York Sun9b53a9e2008-04-28 02:15:34 -07001332 break;
1333 case MFB_SET_CHROMA_KEY:
1334 /* set panel winformation */
1335 if (copy_from_user(&ck, buf, sizeof(ck)))
1336 return -EFAULT;
1337
1338 if (ck.enable &&
1339 (ck.red_max < ck.red_min ||
1340 ck.green_max < ck.green_min ||
1341 ck.blue_max < ck.blue_min))
1342 return -EINVAL;
1343
1344 if (!ck.enable) {
1345 ad->ckmax_r = 0;
1346 ad->ckmax_g = 0;
1347 ad->ckmax_b = 0;
1348 ad->ckmin_r = 255;
1349 ad->ckmin_g = 255;
1350 ad->ckmin_b = 255;
1351 } else {
1352 ad->ckmax_r = ck.red_max;
1353 ad->ckmax_g = ck.green_max;
1354 ad->ckmax_b = ck.blue_max;
1355 ad->ckmin_r = ck.red_min;
1356 ad->ckmin_g = ck.green_min;
1357 ad->ckmin_b = ck.blue_min;
1358 }
York Sun9b53a9e2008-04-28 02:15:34 -07001359 break;
Timur Tabie95c17e2012-10-16 17:33:44 -05001360#ifdef CONFIG_PPC_MPC512x
1361 case MFB_SET_GAMMA: {
1362 struct fsl_diu_data *data = mfbi->parent;
1363
1364 if (copy_from_user(data->gamma, buf, sizeof(data->gamma)))
1365 return -EFAULT;
1366 setbits32(&data->diu_reg->gamma, 0); /* Force table reload */
1367 break;
1368 }
1369 case MFB_GET_GAMMA: {
1370 struct fsl_diu_data *data = mfbi->parent;
1371
1372 if (copy_to_user(buf, data->gamma, sizeof(data->gamma)))
1373 return -EFAULT;
1374 break;
1375 }
1376#endif
York Sun9b53a9e2008-04-28 02:15:34 -07001377 default:
Timur Tabi154152a2011-09-15 16:44:47 -05001378 dev_err(info->dev, "unknown ioctl command (0x%08X)\n", cmd);
York Sun9b53a9e2008-04-28 02:15:34 -07001379 return -ENOIOCTLCMD;
1380 }
1381
1382 return 0;
1383}
1384
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001385static inline void fsl_diu_enable_interrupts(struct fsl_diu_data *data)
1386{
1387 u32 int_mask = INT_UNDRUN; /* enable underrun detection */
1388
1389 if (IS_ENABLED(CONFIG_NOT_COHERENT_CACHE))
1390 int_mask |= INT_VSYNC; /* enable vertical sync */
1391
1392 clrbits32(&data->diu_reg->int_mask, int_mask);
1393}
1394
York Sun9b53a9e2008-04-28 02:15:34 -07001395/* turn on fb if count == 1
1396 */
1397static int fsl_diu_open(struct fb_info *info, int user)
1398{
1399 struct mfb_info *mfbi = info->par;
1400 int res = 0;
1401
Anatolij Gustschin4b5006e2010-07-23 04:00:37 +00001402 /* free boot splash memory on first /dev/fb0 open */
Timur Tabi2572df92011-09-28 16:19:51 -05001403 if ((mfbi->index == PLANE0) && diu_ops.release_bootmem)
Anatolij Gustschin4b5006e2010-07-23 04:00:37 +00001404 diu_ops.release_bootmem();
1405
York Sun9b53a9e2008-04-28 02:15:34 -07001406 spin_lock(&diu_lock);
1407 mfbi->count++;
1408 if (mfbi->count == 1) {
York Sun9b53a9e2008-04-28 02:15:34 -07001409 fsl_diu_check_var(&info->var, info);
1410 res = fsl_diu_set_par(info);
1411 if (res < 0)
1412 mfbi->count--;
Timur Tabif74de502012-10-16 17:33:45 -05001413 else {
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001414 fsl_diu_enable_interrupts(mfbi->parent);
Timur Tabi7e47c212011-09-28 16:19:52 -05001415 fsl_diu_enable_panel(info);
Timur Tabif74de502012-10-16 17:33:45 -05001416 }
York Sun9b53a9e2008-04-28 02:15:34 -07001417 }
1418
1419 spin_unlock(&diu_lock);
1420 return res;
1421}
1422
1423/* turn off fb if count == 0
1424 */
1425static int fsl_diu_release(struct fb_info *info, int user)
1426{
1427 struct mfb_info *mfbi = info->par;
1428 int res = 0;
1429
1430 spin_lock(&diu_lock);
1431 mfbi->count--;
Timur Tabif74de502012-10-16 17:33:45 -05001432 if (mfbi->count == 0) {
1433 struct fsl_diu_data *data = mfbi->parent;
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001434 bool disable = true;
1435 int i;
Timur Tabif74de502012-10-16 17:33:45 -05001436
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001437 /* Disable interrupts only if all AOIs are closed */
1438 for (i = 0; i < NUM_AOIS; i++) {
1439 struct mfb_info *mi = data->fsl_diu_info[i].par;
1440
1441 if (mi->count)
1442 disable = false;
1443 }
1444 if (disable)
1445 out_be32(&data->diu_reg->int_mask, 0xffffffff);
Timur Tabi2572df92011-09-28 16:19:51 -05001446 fsl_diu_disable_panel(info);
Timur Tabif74de502012-10-16 17:33:45 -05001447 }
Timur Tabi2572df92011-09-28 16:19:51 -05001448
York Sun9b53a9e2008-04-28 02:15:34 -07001449 spin_unlock(&diu_lock);
1450 return res;
1451}
1452
1453static struct fb_ops fsl_diu_ops = {
1454 .owner = THIS_MODULE,
1455 .fb_check_var = fsl_diu_check_var,
1456 .fb_set_par = fsl_diu_set_par,
1457 .fb_setcolreg = fsl_diu_setcolreg,
York Sun9b53a9e2008-04-28 02:15:34 -07001458 .fb_pan_display = fsl_diu_pan_display,
1459 .fb_fillrect = cfb_fillrect,
1460 .fb_copyarea = cfb_copyarea,
1461 .fb_imageblit = cfb_imageblit,
1462 .fb_ioctl = fsl_diu_ioctl,
1463 .fb_open = fsl_diu_open,
1464 .fb_release = fsl_diu_release,
Timur Tabi38dd2da2013-03-30 02:36:00 +02001465 .fb_cursor = fsl_diu_cursor,
York Sun9b53a9e2008-04-28 02:15:34 -07001466};
1467
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -08001468static int install_fb(struct fb_info *info)
York Sun9b53a9e2008-04-28 02:15:34 -07001469{
1470 int rc;
1471 struct mfb_info *mfbi = info->par;
Timur Tabie7b42712012-10-16 17:33:50 -05001472 struct fsl_diu_data *data = mfbi->parent;
York Sun9b53a9e2008-04-28 02:15:34 -07001473 const char *aoi_mode, *init_aoi_mode = "320x240";
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001474 struct fb_videomode *db = fsl_diu_mode_db;
1475 unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db);
1476 int has_default_mode = 1;
York Sun9b53a9e2008-04-28 02:15:34 -07001477
Timur Tabif934fbd2011-12-19 16:26:14 -06001478 info->var.activate = FB_ACTIVATE_NOW;
1479 info->fbops = &fsl_diu_ops;
Timur Tabi934dbee2011-12-19 16:26:15 -06001480 info->flags = FBINFO_DEFAULT | FBINFO_VIRTFB | FBINFO_PARTIAL_PAN_OK |
1481 FBINFO_READS_FAST;
Timur Tabif934fbd2011-12-19 16:26:14 -06001482 info->pseudo_palette = mfbi->pseudo_palette;
1483
1484 rc = fb_alloc_cmap(&info->cmap, 16, 0);
1485 if (rc)
1486 return rc;
York Sun9b53a9e2008-04-28 02:15:34 -07001487
Timur Tabi2572df92011-09-28 16:19:51 -05001488 if (mfbi->index == PLANE0) {
Timur Tabie7b42712012-10-16 17:33:50 -05001489 if (data->has_edid) {
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001490 /* Now build modedb from EDID */
Timur Tabie7b42712012-10-16 17:33:50 -05001491 fb_edid_to_monspecs(data->edid_data, &info->monspecs);
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001492 fb_videomode_to_modelist(info->monspecs.modedb,
1493 info->monspecs.modedb_len,
1494 &info->modelist);
1495 db = info->monspecs.modedb;
1496 dbsize = info->monspecs.modedb_len;
1497 }
York Sun9b53a9e2008-04-28 02:15:34 -07001498 aoi_mode = fb_mode;
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001499 } else {
York Sun9b53a9e2008-04-28 02:15:34 -07001500 aoi_mode = init_aoi_mode;
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001501 }
Timur Tabi63cf8df2011-09-15 16:44:51 -05001502 rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize, NULL,
1503 default_bpp);
Timur Tabi154152a2011-09-15 16:44:47 -05001504 if (!rc) {
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001505 /*
1506 * For plane 0 we continue and look into
1507 * driver's internal modedb.
1508 */
Timur Tabie7b42712012-10-16 17:33:50 -05001509 if ((mfbi->index == PLANE0) && data->has_edid)
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001510 has_default_mode = 0;
1511 else
1512 return -EINVAL;
York Sun9b53a9e2008-04-28 02:15:34 -07001513 }
1514
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001515 if (!has_default_mode) {
1516 rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
Timur Tabi63cf8df2011-09-15 16:44:51 -05001517 ARRAY_SIZE(fsl_diu_mode_db), NULL, default_bpp);
1518 if (rc)
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001519 has_default_mode = 1;
1520 }
1521
1522 /* Still not found, use preferred mode from database if any */
1523 if (!has_default_mode && info->monspecs.modedb) {
1524 struct fb_monspecs *specs = &info->monspecs;
1525 struct fb_videomode *modedb = &specs->modedb[0];
1526
1527 /*
1528 * Get preferred timing. If not found,
1529 * first mode in database will be used.
1530 */
1531 if (specs->misc & FB_MISC_1ST_DETAIL) {
1532 int i;
1533
1534 for (i = 0; i < specs->modedb_len; i++) {
1535 if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
1536 modedb = &specs->modedb[i];
1537 break;
1538 }
1539 }
1540 }
1541
1542 info->var.bits_per_pixel = default_bpp;
1543 fb_videomode_to_var(&info->var, modedb);
1544 }
1545
York Sun9b53a9e2008-04-28 02:15:34 -07001546 if (fsl_diu_check_var(&info->var, info)) {
Timur Tabi154152a2011-09-15 16:44:47 -05001547 dev_err(info->dev, "fsl_diu_check_var failed\n");
Timur Tabi589c7972011-09-15 16:44:55 -05001548 unmap_video_memory(info);
York Sun9b53a9e2008-04-28 02:15:34 -07001549 fb_dealloc_cmap(&info->cmap);
1550 return -EINVAL;
1551 }
1552
York Sun9b53a9e2008-04-28 02:15:34 -07001553 if (register_framebuffer(info) < 0) {
Timur Tabi154152a2011-09-15 16:44:47 -05001554 dev_err(info->dev, "register_framebuffer failed\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001555 unmap_video_memory(info);
1556 fb_dealloc_cmap(&info->cmap);
1557 return -EINVAL;
1558 }
1559
1560 mfbi->registered = 1;
Timur Tabi154152a2011-09-15 16:44:47 -05001561 dev_info(info->dev, "%s registered successfully\n", mfbi->id);
York Sun9b53a9e2008-04-28 02:15:34 -07001562
1563 return 0;
1564}
1565
Anton Vorontsov05946bc2008-07-04 09:59:38 -07001566static void uninstall_fb(struct fb_info *info)
York Sun9b53a9e2008-04-28 02:15:34 -07001567{
1568 struct mfb_info *mfbi = info->par;
1569
1570 if (!mfbi->registered)
1571 return;
1572
1573 unregister_framebuffer(info);
1574 unmap_video_memory(info);
1575 if (&info->cmap)
1576 fb_dealloc_cmap(&info->cmap);
1577
1578 mfbi->registered = 0;
1579}
1580
1581static irqreturn_t fsl_diu_isr(int irq, void *dev_id)
1582{
Timur Tabi3c755b72011-10-04 19:36:51 -05001583 struct diu __iomem *hw = dev_id;
Timur Tabif74de502012-10-16 17:33:45 -05001584 uint32_t status = in_be32(&hw->int_status);
York Sun9b53a9e2008-04-28 02:15:34 -07001585
1586 if (status) {
1587 /* This is the workaround for underrun */
1588 if (status & INT_UNDRUN) {
1589 out_be32(&hw->diu_mode, 0);
York Sun9b53a9e2008-04-28 02:15:34 -07001590 udelay(1);
1591 out_be32(&hw->diu_mode, 1);
1592 }
1593#if defined(CONFIG_NOT_COHERENT_CACHE)
1594 else if (status & INT_VSYNC) {
1595 unsigned int i;
Timur Tabi4a85dc8b2011-09-15 16:44:46 -05001596
York Sun9b53a9e2008-04-28 02:15:34 -07001597 for (i = 0; i < coherence_data_size;
1598 i += d_cache_line_size)
1599 __asm__ __volatile__ (
1600 "dcbz 0, %[input]"
1601 ::[input]"r"(&coherence_data[i]));
1602 }
1603#endif
1604 return IRQ_HANDLED;
1605 }
1606 return IRQ_NONE;
1607}
1608
York Sun9b53a9e2008-04-28 02:15:34 -07001609#ifdef CONFIG_PM
1610/*
1611 * Power management hooks. Note that we won't be called from IRQ context,
1612 * unlike the blank functions above, so we may sleep.
1613 */
Grant Likely2dc11582010-08-06 09:25:50 -06001614static int fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state)
York Sun9b53a9e2008-04-28 02:15:34 -07001615{
Timur Tabib7795052011-12-08 17:27:31 -06001616 struct fsl_diu_data *data;
York Sun9b53a9e2008-04-28 02:15:34 -07001617
Timur Tabib7795052011-12-08 17:27:31 -06001618 data = dev_get_drvdata(&ofdev->dev);
Michael Neulingf7f5ef02012-01-28 19:35:24 +00001619 disable_lcdc(data->fsl_diu_info);
York Sun9b53a9e2008-04-28 02:15:34 -07001620
1621 return 0;
1622}
1623
Grant Likely2dc11582010-08-06 09:25:50 -06001624static int fsl_diu_resume(struct platform_device *ofdev)
York Sun9b53a9e2008-04-28 02:15:34 -07001625{
Timur Tabib7795052011-12-08 17:27:31 -06001626 struct fsl_diu_data *data;
Jason Jine03dc192015-08-14 13:54:09 +08001627 unsigned int i;
York Sun9b53a9e2008-04-28 02:15:34 -07001628
Timur Tabib7795052011-12-08 17:27:31 -06001629 data = dev_get_drvdata(&ofdev->dev);
Jason Jine03dc192015-08-14 13:54:09 +08001630
1631 fsl_diu_enable_interrupts(data);
1632 update_lcdc(data->fsl_diu_info);
1633 for (i = 0; i < NUM_AOIS; i++) {
1634 if (data->mfb[i].count)
1635 fsl_diu_enable_panel(&data->fsl_diu_info[i]);
1636 }
York Sun9b53a9e2008-04-28 02:15:34 -07001637
1638 return 0;
1639}
1640
1641#else
1642#define fsl_diu_suspend NULL
1643#define fsl_diu_resume NULL
1644#endif /* CONFIG_PM */
1645
York Sun9b53a9e2008-04-28 02:15:34 -07001646static ssize_t store_monitor(struct device *device,
1647 struct device_attribute *attr, const char *buf, size_t count)
1648{
Timur Tabi7653aaa2011-07-09 15:38:14 -05001649 enum fsl_diu_monitor_port old_monitor_port;
Timur Tabib7795052011-12-08 17:27:31 -06001650 struct fsl_diu_data *data =
York Sun9b53a9e2008-04-28 02:15:34 -07001651 container_of(attr, struct fsl_diu_data, dev_attr);
1652
Timur Tabib7795052011-12-08 17:27:31 -06001653 old_monitor_port = data->monitor_port;
1654 data->monitor_port = fsl_diu_name_to_port(buf);
York Sun9b53a9e2008-04-28 02:15:34 -07001655
Timur Tabib7795052011-12-08 17:27:31 -06001656 if (old_monitor_port != data->monitor_port) {
York Sun9b53a9e2008-04-28 02:15:34 -07001657 /* All AOIs need adjust pixel format
1658 * fsl_diu_set_par only change the pixsel format here
1659 * unlikely to fail. */
Timur Tabiddd3d902011-12-02 17:03:27 -06001660 unsigned int i;
1661
1662 for (i=0; i < NUM_AOIS; i++)
Timur Tabib7795052011-12-08 17:27:31 -06001663 fsl_diu_set_par(&data->fsl_diu_info[i]);
York Sun9b53a9e2008-04-28 02:15:34 -07001664 }
1665 return count;
1666}
1667
1668static ssize_t show_monitor(struct device *device,
1669 struct device_attribute *attr, char *buf)
1670{
Timur Tabib7795052011-12-08 17:27:31 -06001671 struct fsl_diu_data *data =
York Sun9b53a9e2008-04-28 02:15:34 -07001672 container_of(attr, struct fsl_diu_data, dev_attr);
Timur Tabi7653aaa2011-07-09 15:38:14 -05001673
Timur Tabib7795052011-12-08 17:27:31 -06001674 switch (data->monitor_port) {
Timur Tabi7653aaa2011-07-09 15:38:14 -05001675 case FSL_DIU_PORT_DVI:
1676 return sprintf(buf, "DVI\n");
1677 case FSL_DIU_PORT_LVDS:
1678 return sprintf(buf, "Single-link LVDS\n");
1679 case FSL_DIU_PORT_DLVDS:
1680 return sprintf(buf, "Dual-link LVDS\n");
1681 }
1682
1683 return 0;
York Sun9b53a9e2008-04-28 02:15:34 -07001684}
1685
Greg Kroah-Hartman48c68c42012-12-21 13:07:39 -08001686static int fsl_diu_probe(struct platform_device *pdev)
York Sun9b53a9e2008-04-28 02:15:34 -07001687{
Timur Tabi9e52ba62011-09-15 16:44:50 -05001688 struct device_node *np = pdev->dev.of_node;
York Sun9b53a9e2008-04-28 02:15:34 -07001689 struct mfb_info *mfbi;
Timur Tabib7795052011-12-08 17:27:31 -06001690 struct fsl_diu_data *data;
Timur Tabib7795052011-12-08 17:27:31 -06001691 dma_addr_t dma_addr; /* DMA addr of fsl_diu_data struct */
Timur Tabie7b42712012-10-16 17:33:50 -05001692 const void *prop;
Timur Tabiddd3d902011-12-02 17:03:27 -06001693 unsigned int i;
1694 int ret;
York Sun9b53a9e2008-04-28 02:15:34 -07001695
Damien Cassouc1f383d2012-07-31 18:39:20 +02001696 data = dmam_alloc_coherent(&pdev->dev, sizeof(struct fsl_diu_data),
1697 &dma_addr, GFP_DMA | __GFP_ZERO);
Timur Tabib7795052011-12-08 17:27:31 -06001698 if (!data)
York Sun9b53a9e2008-04-28 02:15:34 -07001699 return -ENOMEM;
Timur Tabib7795052011-12-08 17:27:31 -06001700 data->dma_addr = dma_addr;
Timur Tabiddd3d902011-12-02 17:03:27 -06001701
1702 /*
1703 * dma_alloc_coherent() uses a page allocator, so the address is
1704 * always page-aligned. We need the memory to be 32-byte aligned,
1705 * so that's good. However, if one day the allocator changes, we
1706 * need to catch that. It's not worth the effort to handle unaligned
1707 * alloctions now because it's highly unlikely to ever be a problem.
1708 */
Timur Tabib7795052011-12-08 17:27:31 -06001709 if ((unsigned long)data & 31) {
Timur Tabiddd3d902011-12-02 17:03:27 -06001710 dev_err(&pdev->dev, "misaligned allocation");
1711 ret = -ENOMEM;
1712 goto error;
1713 }
York Sun9b53a9e2008-04-28 02:15:34 -07001714
Timur Tabib7795052011-12-08 17:27:31 -06001715 spin_lock_init(&data->reg_lock);
Timur Tabi3c755b72011-10-04 19:36:51 -05001716
Timur Tabiddd3d902011-12-02 17:03:27 -06001717 for (i = 0; i < NUM_AOIS; i++) {
Timur Tabib7795052011-12-08 17:27:31 -06001718 struct fb_info *info = &data->fsl_diu_info[i];
Timur Tabiddd3d902011-12-02 17:03:27 -06001719
1720 info->device = &pdev->dev;
Timur Tabib7795052011-12-08 17:27:31 -06001721 info->par = &data->mfb[i];
Timur Tabiddd3d902011-12-02 17:03:27 -06001722
1723 /*
1724 * We store the physical address of the AD in the reserved
1725 * 'paddr' field of the AD itself.
1726 */
Timur Tabib7795052011-12-08 17:27:31 -06001727 data->ad[i].paddr = DMA_ADDR(data, ad[i]);
Timur Tabiddd3d902011-12-02 17:03:27 -06001728
1729 info->fix.smem_start = 0;
1730
1731 /* Initialize the AOI data structure */
1732 mfbi = info->par;
York Sun9b53a9e2008-04-28 02:15:34 -07001733 memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info));
Timur Tabib7795052011-12-08 17:27:31 -06001734 mfbi->parent = data;
1735 mfbi->ad = &data->ad[i];
Timur Tabie7b42712012-10-16 17:33:50 -05001736 }
Anatolij Gustschin8b856f02010-07-23 04:00:39 +00001737
Timur Tabie7b42712012-10-16 17:33:50 -05001738 /* Get the EDID data from the device tree, if present */
1739 prop = of_get_property(np, "edid", &ret);
1740 if (prop && ret == EDID_LENGTH) {
1741 memcpy(data->edid_data, prop, EDID_LENGTH);
1742 data->has_edid = true;
York Sun9b53a9e2008-04-28 02:15:34 -07001743 }
1744
Timur Tabib7795052011-12-08 17:27:31 -06001745 data->diu_reg = of_iomap(np, 0);
1746 if (!data->diu_reg) {
Timur Tabi9e52ba62011-09-15 16:44:50 -05001747 dev_err(&pdev->dev, "cannot map DIU registers\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001748 ret = -EFAULT;
Timur Tabiddd3d902011-12-02 17:03:27 -06001749 goto error;
York Sun9b53a9e2008-04-28 02:15:34 -07001750 }
1751
York Sun9b53a9e2008-04-28 02:15:34 -07001752 /* Get the IRQ of the DIU */
Timur Tabib7795052011-12-08 17:27:31 -06001753 data->irq = irq_of_parse_and_map(np, 0);
York Sun9b53a9e2008-04-28 02:15:34 -07001754
Timur Tabib7795052011-12-08 17:27:31 -06001755 if (!data->irq) {
Timur Tabi9e52ba62011-09-15 16:44:50 -05001756 dev_err(&pdev->dev, "could not get DIU IRQ\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001757 ret = -EINVAL;
1758 goto error;
1759 }
Timur Tabib7795052011-12-08 17:27:31 -06001760 data->monitor_port = monitor_port;
York Sun9b53a9e2008-04-28 02:15:34 -07001761
Timur Tabiddd3d902011-12-02 17:03:27 -06001762 /* Initialize the dummy Area Descriptor */
Timur Tabib7795052011-12-08 17:27:31 -06001763 data->dummy_ad.addr = cpu_to_le32(DMA_ADDR(data, dummy_aoi));
1764 data->dummy_ad.pix_fmt = 0x88882317;
1765 data->dummy_ad.src_size_g_alpha = cpu_to_le32((4 << 12) | 4);
1766 data->dummy_ad.aoi_size = cpu_to_le32((4 << 16) | 2);
1767 data->dummy_ad.offset_xyi = 0;
1768 data->dummy_ad.offset_xyd = 0;
1769 data->dummy_ad.next_ad = 0;
1770 data->dummy_ad.paddr = DMA_ADDR(data, dummy_ad);
York Sun9b53a9e2008-04-28 02:15:34 -07001771
Anatolij Gustschin4b5006e2010-07-23 04:00:37 +00001772 /*
Timur Tabi7af3b132012-10-16 17:33:48 -05001773 * Let DIU continue to display splash screen if it was pre-initialized
1774 * by the bootloader; otherwise, clear the display.
Anatolij Gustschin4b5006e2010-07-23 04:00:37 +00001775 */
Timur Tabi7af3b132012-10-16 17:33:48 -05001776 if (in_be32(&data->diu_reg->diu_mode) == MFB_MODE0)
1777 out_be32(&data->diu_reg->desc[0], 0);
Anatolij Gustschin4b5006e2010-07-23 04:00:37 +00001778
Timur Tabib7795052011-12-08 17:27:31 -06001779 out_be32(&data->diu_reg->desc[1], data->dummy_ad.paddr);
1780 out_be32(&data->diu_reg->desc[2], data->dummy_ad.paddr);
York Sun9b53a9e2008-04-28 02:15:34 -07001781
Timur Tabif74de502012-10-16 17:33:45 -05001782 /*
1783 * Older versions of U-Boot leave interrupts enabled, so disable
1784 * all of them and clear the status register.
1785 */
1786 out_be32(&data->diu_reg->int_mask, 0xffffffff);
1787 in_be32(&data->diu_reg->int_status);
1788
1789 ret = request_irq(data->irq, fsl_diu_isr, 0, "fsl-diu-fb",
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001790 data->diu_reg);
Timur Tabif74de502012-10-16 17:33:45 -05001791 if (ret) {
Timur Tabi9e52ba62011-09-15 16:44:50 -05001792 dev_err(&pdev->dev, "could not claim irq\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001793 goto error;
1794 }
1795
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001796 for (i = 0; i < NUM_AOIS; i++) {
1797 ret = install_fb(&data->fsl_diu_info[i]);
1798 if (ret) {
1799 dev_err(&pdev->dev, "could not register fb %d\n", i);
1800 free_irq(data->irq, data->diu_reg);
1801 goto error;
1802 }
1803 }
1804
Timur Tabib7795052011-12-08 17:27:31 -06001805 sysfs_attr_init(&data->dev_attr.attr);
1806 data->dev_attr.attr.name = "monitor";
1807 data->dev_attr.attr.mode = S_IRUGO|S_IWUSR;
1808 data->dev_attr.show = show_monitor;
1809 data->dev_attr.store = store_monitor;
1810 ret = device_create_file(&pdev->dev, &data->dev_attr);
Timur Tabiddd3d902011-12-02 17:03:27 -06001811 if (ret) {
Timur Tabi9e52ba62011-09-15 16:44:50 -05001812 dev_err(&pdev->dev, "could not create sysfs file %s\n",
Timur Tabib7795052011-12-08 17:27:31 -06001813 data->dev_attr.attr.name);
York Sun9b53a9e2008-04-28 02:15:34 -07001814 }
1815
Timur Tabib7795052011-12-08 17:27:31 -06001816 dev_set_drvdata(&pdev->dev, data);
York Sun9b53a9e2008-04-28 02:15:34 -07001817 return 0;
1818
1819error:
Timur Tabiddd3d902011-12-02 17:03:27 -06001820 for (i = 0; i < NUM_AOIS; i++)
Timur Tabib7795052011-12-08 17:27:31 -06001821 uninstall_fb(&data->fsl_diu_info[i]);
Timur Tabi3f78bbd2011-09-15 16:44:56 -05001822
Timur Tabib7795052011-12-08 17:27:31 -06001823 iounmap(data->diu_reg);
York Sun9b53a9e2008-04-28 02:15:34 -07001824
York Sun9b53a9e2008-04-28 02:15:34 -07001825 return ret;
1826}
1827
Timur Tabi9e52ba62011-09-15 16:44:50 -05001828static int fsl_diu_remove(struct platform_device *pdev)
York Sun9b53a9e2008-04-28 02:15:34 -07001829{
Timur Tabib7795052011-12-08 17:27:31 -06001830 struct fsl_diu_data *data;
York Sun9b53a9e2008-04-28 02:15:34 -07001831 int i;
1832
Timur Tabib7795052011-12-08 17:27:31 -06001833 data = dev_get_drvdata(&pdev->dev);
1834 disable_lcdc(&data->fsl_diu_info[0]);
Timur Tabif74de502012-10-16 17:33:45 -05001835
Anatolij Gustschinb2639b52013-01-19 10:59:10 +01001836 free_irq(data->irq, data->diu_reg);
Timur Tabiddd3d902011-12-02 17:03:27 -06001837
1838 for (i = 0; i < NUM_AOIS; i++)
Timur Tabib7795052011-12-08 17:27:31 -06001839 uninstall_fb(&data->fsl_diu_info[i]);
Timur Tabiddd3d902011-12-02 17:03:27 -06001840
Timur Tabib7795052011-12-08 17:27:31 -06001841 iounmap(data->diu_reg);
Timur Tabiddd3d902011-12-02 17:03:27 -06001842
York Sun9b53a9e2008-04-28 02:15:34 -07001843 return 0;
1844}
1845
1846#ifndef MODULE
1847static int __init fsl_diu_setup(char *options)
1848{
1849 char *opt;
1850 unsigned long val;
1851
1852 if (!options || !*options)
1853 return 0;
1854
1855 while ((opt = strsep(&options, ",")) != NULL) {
1856 if (!*opt)
1857 continue;
1858 if (!strncmp(opt, "monitor=", 8)) {
Timur Tabi7653aaa2011-07-09 15:38:14 -05001859 monitor_port = fsl_diu_name_to_port(opt + 8);
York Sun9b53a9e2008-04-28 02:15:34 -07001860 } else if (!strncmp(opt, "bpp=", 4)) {
Jingoo Hanf5725af2013-06-01 16:31:21 +09001861 if (!kstrtoul(opt + 4, 10, &val))
York Sun9b53a9e2008-04-28 02:15:34 -07001862 default_bpp = val;
1863 } else
1864 fb_mode = opt;
1865 }
1866
1867 return 0;
1868}
1869#endif
1870
Arvind Yadav526c9e92017-07-04 17:47:22 +02001871static const struct of_device_id fsl_diu_match[] = {
Anatolij Gustschind24720a2010-02-17 07:33:22 -07001872#ifdef CONFIG_PPC_MPC512x
1873 {
1874 .compatible = "fsl,mpc5121-diu",
1875 },
1876#endif
York Sun9b53a9e2008-04-28 02:15:34 -07001877 {
1878 .compatible = "fsl,diu",
1879 },
1880 {}
1881};
1882MODULE_DEVICE_TABLE(of, fsl_diu_match);
1883
Grant Likely28541d02011-02-22 21:07:43 -07001884static struct platform_driver fsl_diu_driver = {
Grant Likely40182942010-04-13 16:13:02 -07001885 .driver = {
Timur Tabif8c6bf62011-09-15 16:44:53 -05001886 .name = "fsl-diu-fb",
Grant Likely40182942010-04-13 16:13:02 -07001887 .of_match_table = fsl_diu_match,
1888 },
York Sun9b53a9e2008-04-28 02:15:34 -07001889 .probe = fsl_diu_probe,
1890 .remove = fsl_diu_remove,
1891 .suspend = fsl_diu_suspend,
1892 .resume = fsl_diu_resume,
1893};
1894
1895static int __init fsl_diu_init(void)
1896{
1897#ifdef CONFIG_NOT_COHERENT_CACHE
1898 struct device_node *np;
1899 const u32 *prop;
1900#endif
1901 int ret;
1902#ifndef MODULE
1903 char *option;
1904
1905 /*
1906 * For kernel boot options (in 'video=xxxfb:<options>' format)
1907 */
1908 if (fb_get_options("fslfb", &option))
1909 return -ENODEV;
1910 fsl_diu_setup(option);
Timur Tabi7653aaa2011-07-09 15:38:14 -05001911#else
1912 monitor_port = fsl_diu_name_to_port(monitor_string);
York Sun9b53a9e2008-04-28 02:15:34 -07001913#endif
Wang Dongshengacfc1cc2015-12-03 09:54:12 +08001914
1915 /*
1916 * Must to verify set_pixel_clock. If not implement on platform,
1917 * then that means that there is no platform support for the DIU.
1918 */
1919 if (!diu_ops.set_pixel_clock)
1920 return -ENODEV;
1921
Timur Tabi154152a2011-09-15 16:44:47 -05001922 pr_info("Freescale Display Interface Unit (DIU) framebuffer driver\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001923
1924#ifdef CONFIG_NOT_COHERENT_CACHE
1925 np = of_find_node_by_type(NULL, "cpu");
1926 if (!np) {
Timur Tabi154152a2011-09-15 16:44:47 -05001927 pr_err("fsl-diu-fb: can't find 'cpu' device node\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001928 return -ENODEV;
1929 }
1930
1931 prop = of_get_property(np, "d-cache-size", NULL);
Julia Lawall5394ba02008-08-05 13:01:28 -07001932 if (prop == NULL) {
Timur Tabi154152a2011-09-15 16:44:47 -05001933 pr_err("fsl-diu-fb: missing 'd-cache-size' property' "
1934 "in 'cpu' node\n");
Julia Lawall5394ba02008-08-05 13:01:28 -07001935 of_node_put(np);
York Sun9b53a9e2008-04-28 02:15:34 -07001936 return -ENODEV;
Julia Lawall5394ba02008-08-05 13:01:28 -07001937 }
York Sun9b53a9e2008-04-28 02:15:34 -07001938
Timur Tabi4a85dc8b2011-09-15 16:44:46 -05001939 /*
1940 * Freescale PLRU requires 13/8 times the cache size to do a proper
1941 * displacement flush
York Sun9b53a9e2008-04-28 02:15:34 -07001942 */
Timur Tabi9e52ba62011-09-15 16:44:50 -05001943 coherence_data_size = be32_to_cpup(prop) * 13;
York Sun9b53a9e2008-04-28 02:15:34 -07001944 coherence_data_size /= 8;
1945
Timur Tabi5cc2a362012-10-16 17:33:46 -05001946 pr_debug("fsl-diu-fb: coherence data size is %zu bytes\n",
1947 coherence_data_size);
1948
York Sun9b53a9e2008-04-28 02:15:34 -07001949 prop = of_get_property(np, "d-cache-line-size", NULL);
Julia Lawall5394ba02008-08-05 13:01:28 -07001950 if (prop == NULL) {
Timur Tabi154152a2011-09-15 16:44:47 -05001951 pr_err("fsl-diu-fb: missing 'd-cache-line-size' property' "
1952 "in 'cpu' node\n");
Julia Lawall5394ba02008-08-05 13:01:28 -07001953 of_node_put(np);
York Sun9b53a9e2008-04-28 02:15:34 -07001954 return -ENODEV;
Julia Lawall5394ba02008-08-05 13:01:28 -07001955 }
Timur Tabi9e52ba62011-09-15 16:44:50 -05001956 d_cache_line_size = be32_to_cpup(prop);
York Sun9b53a9e2008-04-28 02:15:34 -07001957
Timur Tabi5cc2a362012-10-16 17:33:46 -05001958 pr_debug("fsl-diu-fb: cache lines size is %u bytes\n",
1959 d_cache_line_size);
1960
York Sun9b53a9e2008-04-28 02:15:34 -07001961 of_node_put(np);
1962 coherence_data = vmalloc(coherence_data_size);
Timur Tabi5cc2a362012-10-16 17:33:46 -05001963 if (!coherence_data) {
1964 pr_err("fsl-diu-fb: could not allocate coherence data "
1965 "(size=%zu)\n", coherence_data_size);
York Sun9b53a9e2008-04-28 02:15:34 -07001966 return -ENOMEM;
Timur Tabi5cc2a362012-10-16 17:33:46 -05001967 }
1968
York Sun9b53a9e2008-04-28 02:15:34 -07001969#endif
Timur Tabi4a85dc8b2011-09-15 16:44:46 -05001970
Grant Likely28541d02011-02-22 21:07:43 -07001971 ret = platform_driver_register(&fsl_diu_driver);
York Sun9b53a9e2008-04-28 02:15:34 -07001972 if (ret) {
Timur Tabi154152a2011-09-15 16:44:47 -05001973 pr_err("fsl-diu-fb: failed to register platform driver\n");
York Sun9b53a9e2008-04-28 02:15:34 -07001974#if defined(CONFIG_NOT_COHERENT_CACHE)
1975 vfree(coherence_data);
1976#endif
York Sun9b53a9e2008-04-28 02:15:34 -07001977 }
1978 return ret;
1979}
1980
1981static void __exit fsl_diu_exit(void)
1982{
Grant Likely28541d02011-02-22 21:07:43 -07001983 platform_driver_unregister(&fsl_diu_driver);
York Sun9b53a9e2008-04-28 02:15:34 -07001984#if defined(CONFIG_NOT_COHERENT_CACHE)
1985 vfree(coherence_data);
1986#endif
1987}
1988
1989module_init(fsl_diu_init);
1990module_exit(fsl_diu_exit);
1991
1992MODULE_AUTHOR("York Sun <yorksun@freescale.com>");
1993MODULE_DESCRIPTION("Freescale DIU framebuffer driver");
1994MODULE_LICENSE("GPL");
1995
1996module_param_named(mode, fb_mode, charp, 0);
1997MODULE_PARM_DESC(mode,
1998 "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
1999module_param_named(bpp, default_bpp, ulong, 0);
Timur Tabi154152a2011-09-15 16:44:47 -05002000MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified in 'mode'");
Timur Tabi7653aaa2011-07-09 15:38:14 -05002001module_param_named(monitor, monitor_string, charp, 0);
2002MODULE_PARM_DESC(monitor, "Specify the monitor port "
2003 "(\"dvi\", \"lvds\", or \"dlvds\") if supported by the platform");
York Sun9b53a9e2008-04-28 02:15:34 -07002004