summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/video/fbdev/bfin_adv7393fb.h
blob: cd591b5152a56baa9e6a2e607e3ca842bea921dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
/*
 * Frame buffer driver for ADV7393/2 video encoder
 *
 * Copyright 2006-2009 Analog Devices Inc.
 * Licensed under the GPL-2 or late.
 */

#ifndef __BFIN_ADV7393FB_H__
#define __BFIN_ADV7393FB_H__

#define BFIN_LCD_NBR_PALETTE_ENTRIES	256

#ifdef CONFIG_NTSC
# define VMODE 0
#endif
#ifdef CONFIG_PAL
# define VMODE 1
#endif
#ifdef CONFIG_NTSC_640x480
# define VMODE 2
#endif
#ifdef CONFIG_PAL_640x480
# define VMODE 3
#endif
#ifdef CONFIG_NTSC_YCBCR
# define VMODE 4
#endif
#ifdef CONFIG_PAL_YCBCR
# define VMODE 5
#endif

#ifndef VMODE
# define VMODE 1
#endif

#ifdef CONFIG_ADV7393_2XMEM
# define VMEM 2
#else
# define VMEM 1
#endif

#if defined(CONFIG_BF537) || defined(CONFIG_BF536) || defined(CONFIG_BF534)
# define DMA_CFG_VAL	0x7935	/* Set Sync Bit */
# define VB_DUMMY_MEMORY_SOURCE	L1_DATA_B_START
#else
# define DMA_CFG_VAL	0x7915
# define VB_DUMMY_MEMORY_SOURCE	BOOT_ROM_START
#endif

enum {
	DESTRUCT,
	BUILD,
};

enum {
	POWER_ON,
	POWER_DOWN,
	BLANK_ON,
	BLANK_OFF,
};

#define DRIVER_NAME "bfin-adv7393"

struct adv7393fb_modes {
	const s8 name[25];	/* Full name */
	u16 xres;		/* Active Horizonzal Pixels  */
	u16 yres;		/* Active Vertical Pixels  */
	u16 bpp;
	u16 vmode;
	u16 a_lines;		/* Active Lines per Field */
	u16 vb1_lines;		/* Vertical Blanking Field 1 Lines */
	u16 vb2_lines;		/* Vertical Blanking Field 2 Lines */
	u16 tot_lines;		/* Total Lines per Frame */
	u16 boeft_blank;	/* Before Odd/Even Field Transition No. of Blank Pixels */
	u16 aoeft_blank;	/* After Odd/Even Field Transition No. of Blank Pixels */
	const s8 *adv7393_i2c_initd;
	u16 adv7393_i2c_initd_len;
};

static const u8 init_NTSC_TESTPATTERN[] = {
	0x00, 0x1E,	/* Power up all DACs and PLL */
	0x01, 0x00,	/* SD-Only Mode */
	0x80, 0x10,	/* SSAF Luma Filter Enabled, NTSC Mode */
	0x82, 0xCB,	/* Step control on, pixel data valid, pedestal on, PrPb SSAF on, CVBS/YC output */
	0x84, 0x40,	/* SD Color Bar Test Pattern Enabled, DAC 2 = Luma, DAC 3 = Chroma */
};

static const u8 init_NTSC[] = {
	0x00, 0x1E,	/* Power up all DACs and PLL */
	0xC3, 0x26,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xC5, 0x12,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xC2, 0x4A,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xC6, 0x5E,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xBD, 0x19,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xBF, 0x42,	/* Program RGB->YCrCb Color Space conversion matrix */
	0x8C, 0x1F,	/* NTSC Subcarrier Frequency */
	0x8D, 0x7C,	/* NTSC Subcarrier Frequency */
	0x8E, 0xF0,	/* NTSC Subcarrier Frequency */
	0x8F, 0x21,	/* NTSC Subcarrier Frequency */
	0x01, 0x00,	/* SD-Only Mode */
	0x80, 0x30,	/* SSAF Luma Filter Enabled, NTSC Mode */
	0x82, 0x8B,	/* Step control on, pixel data invalid, pedestal on, PrPb SSAF on, CVBS/YC output */
	0x87, 0x80,	/* SD Color Bar Test Pattern Enabled, DAC 2 = Luma, DAC 3 = Chroma */
	0x86, 0x82,
	0x8B, 0x11,
	0x88, 0x20,
	0x8A, 0x0d,
};

static const u8 init_PAL[] = {
	0x00, 0x1E,	/* Power up all DACs and PLL */
	0xC3, 0x26,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xC5, 0x12,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xC2, 0x4A,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xC6, 0x5E,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xBD, 0x19,	/* Program RGB->YCrCb Color Space conversion matrix */
	0xBF, 0x42,	/* Program RGB->YCrCb Color Space conversion matrix */
	0x8C, 0xCB,	/* PAL Subcarrier Frequency */
	0x8D, 0x8A,	/* PAL Subcarrier Frequency */
	0x8E, 0x09,	/* PAL Subcarrier Frequency */
	0x8F, 0x2A,	/* PAL Subcarrier Frequency */
	0x01, 0x00,	/* SD-Only Mode */
	0x80, 0x11,	/* SSAF Luma Filter Enabled, PAL Mode */
	0x82, 0x8B,	/* Step control on, pixel data invalid, pedestal on, PrPb SSAF on, CVBS/YC output */
	0x87, 0x80,	/* SD Color Bar Test Pattern Enabled, DAC 2 = Luma, DAC 3 = Chroma */
	0x86, 0x82,
	0x8B, 0x11,
	0x88, 0x20,
	0x8A, 0x0d,
};

static const u8 init_NTSC_YCbCr[] = {
	0x00, 0x1E,	/* Power up all DACs and PLL */
	0x8C, 0x1F,	/* NTSC Subcarrier Frequency */
	0x8D, 0x7C,	/* NTSC Subcarrier Frequency */
	0x8E, 0xF0,	/* NTSC Subcarrier Frequency */
	0x8F, 0x21,	/* NTSC Subcarrier Frequency */
	0x01, 0x00,	/* SD-Only Mode */
	0x80, 0x30,	/* SSAF Luma Filter Enabled, NTSC Mode */
	0x82, 0x8B,	/* Step control on, pixel data invalid, pedestal on, PrPb SSAF on, CVBS/YC output */
	0x87, 0x00,	/* DAC 2 = Luma, DAC 3 = Chroma */
	0x86, 0x82,
	0x8B, 0x11,
	0x88, 0x08,
	0x8A, 0x0d,
};

static const u8 init_PAL_YCbCr[] = {
	0x00, 0x1E,	/* Power up all DACs and PLL */
	0x8C, 0xCB,	/* PAL Subcarrier Frequency */
	0x8D, 0x8A,	/* PAL Subcarrier Frequency */
	0x8E, 0x09,	/* PAL Subcarrier Frequency */
	0x8F, 0x2A,	/* PAL Subcarrier Frequency */
	0x01, 0x00,	/* SD-Only Mode */
	0x80, 0x11,	/* SSAF Luma Filter Enabled, PAL Mode */
	0x82, 0x8B,	/* Step control on, pixel data invalid, pedestal on, PrPb SSAF on, CVBS/YC output */
	0x87, 0x00,	/* DAC 2 = Luma, DAC 3 = Chroma */
	0x86, 0x82,
	0x8B, 0x11,
	0x88, 0x08,
	0x8A, 0x0d,
};

static struct adv7393fb_modes known_modes[] = {
	/* NTSC 720x480 CRT */
	{
		.name = "NTSC 720x480",
		.xres = 720,
		.yres = 480,
		.bpp = 16,
		.vmode = FB_VMODE_INTERLACED,
		.a_lines = 240,
		.vb1_lines = 22,
		.vb2_lines = 23,
		.tot_lines = 525,
		.boeft_blank = 16,
		.aoeft_blank = 122,
		.adv7393_i2c_initd = init_NTSC,
		.adv7393_i2c_initd_len = sizeof(init_NTSC)
	},
	/* PAL 720x480 CRT */
	{
		.name = "PAL 720x576",
		.xres = 720,
		.yres = 576,
		.bpp = 16,
		.vmode = FB_VMODE_INTERLACED,
		.a_lines = 288,
		.vb1_lines = 24,
		.vb2_lines = 25,
		.tot_lines = 625,
		.boeft_blank = 12,
		.aoeft_blank = 132,
		.adv7393_i2c_initd = init_PAL,
		.adv7393_i2c_initd_len = sizeof(init_PAL)
	},
	/* NTSC 640x480 CRT Experimental */
	{
		.name = "NTSC 640x480",
		.xres = 640,
		.yres = 480,
		.bpp = 16,
		.vmode = FB_VMODE_INTERLACED,
		.a_lines = 240,
		.vb1_lines = 22,
		.vb2_lines = 23,
		.tot_lines = 525,
		.boeft_blank = 16 + 40,
		.aoeft_blank = 122 + 40,
		.adv7393_i2c_initd = init_NTSC,
		.adv7393_i2c_initd_len = sizeof(init_NTSC)
	},
	/* PAL 640x480 CRT Experimental */
	{
		.name = "PAL 640x480",
		.xres = 640,
		.yres = 480,
		.bpp = 16,
		.vmode = FB_VMODE_INTERLACED,
		.a_lines = 288 - 20,
		.vb1_lines = 24 + 20,
		.vb2_lines = 25 + 20,
		.tot_lines = 625,
		.boeft_blank = 12 + 40,
		.aoeft_blank = 132 + 40,
		.adv7393_i2c_initd = init_PAL,
		.adv7393_i2c_initd_len = sizeof(init_PAL)
	},
	/* NTSC 720x480 YCbCR */
	{
		.name = "NTSC 720x480 YCbCR",
		.xres = 720,
		.yres = 480,
		.bpp = 16,
		.vmode = FB_VMODE_INTERLACED,
		.a_lines = 240,
		.vb1_lines = 22,
		.vb2_lines = 23,
		.tot_lines = 525,
		.boeft_blank = 16,
		.aoeft_blank = 122,
		.adv7393_i2c_initd = init_NTSC_YCbCr,
		.adv7393_i2c_initd_len = sizeof(init_NTSC_YCbCr)
	},
	/* PAL 720x480 CRT */
	{
		.name = "PAL 720x576 YCbCR",
		.xres = 720,
		.yres = 576,
		.bpp = 16,
		.vmode = FB_VMODE_INTERLACED,
		.a_lines = 288,
		.vb1_lines = 24,
		.vb2_lines = 25,
		.tot_lines = 625,
		.boeft_blank = 12,
		.aoeft_blank = 132,
		.adv7393_i2c_initd = init_PAL_YCbCr,
		.adv7393_i2c_initd_len = sizeof(init_PAL_YCbCr)
	}
};

struct adv7393fb_regs {

};

struct adv7393fb_device {
	struct fb_info info;	/* FB driver info record */

	struct i2c_client *client;

	struct dmasg *descriptor_list_head;
	struct dmasg *vb1;
	struct dmasg *av1;
	struct dmasg *vb2;
	struct dmasg *av2;

	dma_addr_t dma_handle;

	struct fb_info bfin_adv7393_fb;

	struct adv7393fb_modes *modes;

	struct adv7393fb_regs *regs;	/* Registers memory map */
	size_t regs_len;
	size_t fb_len;
	size_t line_len;
	u16 open;
	u16 *fb_mem;		/* RGB Buffer */

};

#define to_adv7393fb_device(_info) \
	  (_info ? container_of(_info, struct adv7393fb_device, info) : NULL);

static int bfin_adv7393_fb_open(struct fb_info *info, int user);
static int bfin_adv7393_fb_release(struct fb_info *info, int user);
static int bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var,
				     struct fb_info *info);

static int bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var,
				       struct fb_info *info);

static int bfin_adv7393_fb_blank(int blank, struct fb_info *info);

static void bfin_config_ppi(struct adv7393fb_device *fbdev);
static int bfin_config_dma(struct adv7393fb_device *fbdev);
static void bfin_disable_dma(void);
static void bfin_enable_ppi(void);
static void bfin_disable_ppi(void);

static inline int adv7393_write(struct i2c_client *client, u8 reg, u8 value);
static inline int adv7393_read(struct i2c_client *client, u8 reg);
static int adv7393_write_block(struct i2c_client *client, const u8 *data,
			       unsigned int len);

int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
static int bfin_adv7393_fb_setcolreg(u_int, u_int, u_int, u_int,
				     u_int, struct fb_info *info);

#endif
een.offset = 8; var->green.length = 8; var->blue.offset = 16; var->blue.length = 8; var->transp.offset = 24; var->transp.length = 8; break; case PIXFMT_RGB888PACK: var->bits_per_pixel = 24; var->red.offset = 16; var->red.length = 8; var->green.offset = 8; var->green.length = 8; var->blue.offset = 0; var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_BGR888PACK: var->bits_per_pixel = 24; var->red.offset = 0; var->red.length = 8; var->green.offset = 8; var->green.length = 8; var->blue.offset = 16; var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_YUV420P: var->bits_per_pixel = 12; var->red.offset = 4; var->red.length = 8; var->green.offset = 2; var->green.length = 2; var->blue.offset = 0; var->blue.length = 2; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_YVU420P: var->bits_per_pixel = 12; var->red.offset = 4; var->red.length = 8; var->green.offset = 0; var->green.length = 2; var->blue.offset = 2; var->blue.length = 2; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_YUV422P: var->bits_per_pixel = 16; var->red.offset = 8; var->red.length = 8; var->green.offset = 4; var->green.length = 4; var->blue.offset = 0; var->blue.length = 4; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_YVU422P: var->bits_per_pixel = 16; var->red.offset = 8; var->red.length = 8; var->green.offset = 0; var->green.length = 4; var->blue.offset = 4; var->blue.length = 4; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_UYVY: var->bits_per_pixel = 16; var->red.offset = 8; var->red.length = 16; var->green.offset = 4; var->green.length = 16; var->blue.offset = 0; var->blue.length = 16; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_VYUY: var->bits_per_pixel = 16; var->red.offset = 8; var->red.length = 16; var->green.offset = 0; var->green.length = 16; var->blue.offset = 4; var->blue.length = 16; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_YUYV: var->bits_per_pixel = 16; var->red.offset = 0; var->red.length = 16; var->green.offset = 4; var->green.length = 16; var->blue.offset = 8; var->blue.length = 16; var->transp.offset = 0; var->transp.length = 0; break; case PIXFMT_PSEUDOCOLOR: var->bits_per_pixel = 8; var->red.offset = 0; var->red.length = 8; var->green.offset = 0; var->green.length = 8; var->blue.offset = 0; var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; break; } } /* * fb framework has its limitation: * 1. input color/output color is not seprated * 2. fb_videomode not include output color * so for fb usage, we keep a output format which is not changed * then it's added for mmpmode */ static void fbmode_to_mmpmode(struct mmp_mode *mode, struct fb_videomode *videomode, int output_fmt) { u64 div_result = 1000000000000ll; mode->name = videomode->name; mode->refresh = videomode->refresh; mode->xres = videomode->xres; mode->yres = videomode->yres; do_div(div_result, videomode->pixclock); mode->pixclock_freq = (u32)div_result; mode->left_margin = videomode->left_margin; mode->right_margin = videomode->right_margin; mode->upper_margin = videomode->upper_margin; mode->lower_margin = videomode->lower_margin; mode->hsync_len = videomode->hsync_len; mode->vsync_len = videomode->vsync_len; mode->hsync_invert = !!(videomode->sync & FB_SYNC_HOR_HIGH_ACT); mode->vsync_invert = !!(videomode->sync & FB_SYNC_VERT_HIGH_ACT); /* no defined flag in fb, use vmode>>3*/ mode->invert_pixclock = !!(videomode->vmode & 8); mode->pix_fmt_out = output_fmt; } static void mmpmode_to_fbmode(struct fb_videomode *videomode, struct mmp_mode *mode) { u64 div_result = 1000000000000ll; videomode->name = mode->name; videomode->refresh = mode->refresh; videomode->xres = mode->xres; videomode->yres = mode->yres; do_div(div_result, mode->pixclock_freq); videomode->pixclock = (u32)div_result; videomode->left_margin = mode->left_margin; videomode->right_margin = mode->right_margin; videomode->upper_margin = mode->upper_margin; videomode->lower_margin = mode->lower_margin; videomode->hsync_len = mode->hsync_len; videomode->vsync_len = mode->vsync_len; videomode->sync = (mode->hsync_invert ? FB_SYNC_HOR_HIGH_ACT : 0) | (mode->vsync_invert ? FB_SYNC_VERT_HIGH_ACT : 0); videomode->vmode = mode->invert_pixclock ? 8 : 0; } static int mmpfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { struct mmpfb_info *fbi = info->par; if (var->bits_per_pixel == 8) return -EINVAL; /* * Basic geometry sanity checks. */ if (var->xoffset + var->xres > var->xres_virtual) return -EINVAL; if (var->yoffset + var->yres > var->yres_virtual) return -EINVAL; /* * Check size of framebuffer. */ if (var->xres_virtual * var->yres_virtual * (var->bits_per_pixel >> 3) > fbi->fb_size) return -EINVAL; return 0; } static unsigned int chan_to_field(unsigned int chan, struct fb_bitfield *bf) { return ((chan & 0xffff) >> (16 - bf->length)) << bf->offset; } static u32 to_rgb(u16 red, u16 green, u16 blue) { red >>= 8; green >>= 8; blue >>= 8; return (red << 16) | (green << 8) | blue; } static int mmpfb_setcolreg(unsigned int regno, unsigned int red, unsigned int green, unsigned int blue, unsigned int trans, struct fb_info *info) { struct mmpfb_info *fbi = info->par; u32 val; if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 16) { val = chan_to_field(red, &info->var.red); val |= chan_to_field(green, &info->var.green); val |= chan_to_field(blue , &info->var.blue); fbi->pseudo_palette[regno] = val; } if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR && regno < 256) { val = to_rgb(red, green, blue); /* TODO */ } return 0; } static int mmpfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { struct mmpfb_info *fbi = info->par; struct mmp_addr addr; memset(&addr, 0, sizeof(addr)); addr.phys[0] = (var->yoffset * var->xres_virtual + var->xoffset) * var->bits_per_pixel / 8 + fbi->fb_start_dma; mmp_overlay_set_addr(fbi->overlay, &addr); return 0; } static int var_update(struct fb_info *info) { struct mmpfb_info *fbi = info->par; struct fb_var_screeninfo *var = &info->var; struct fb_videomode *m; int pix_fmt; /* set pix_fmt */ pix_fmt = var_to_pixfmt(var); if (pix_fmt < 0) return -EINVAL; pixfmt_to_var(var, pix_fmt); fbi->pix_fmt = pix_fmt; /* set var according to best video mode*/ m = (struct fb_videomode *)fb_match_mode(var, &info->modelist); if (!m) { dev_err(fbi->dev, "set par: no match mode, use best mode\n"); m = (struct fb_videomode *)fb_find_best_mode(var, &info->modelist); fb_videomode_to_var(var, m); } memcpy(&fbi->mode, m, sizeof(struct fb_videomode)); /* fix to 2* yres */ var->yres_virtual = var->yres * 2; info->fix.visual = (pix_fmt == PIXFMT_PSEUDOCOLOR) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; info->fix.line_length = var->xres_virtual * var->bits_per_pixel / 8; info->fix.ypanstep = var->yres; return 0; } static void mmpfb_set_win(struct fb_info *info) { struct mmpfb_info *fbi = info->par; struct fb_var_screeninfo *var = &info->var; struct mmp_win win; u32 stride; memset(&win, 0, sizeof(win)); win.xsrc = win.xdst = fbi->mode.xres; win.ysrc = win.ydst = fbi->mode.yres; win.pix_fmt = fbi->pix_fmt; stride = pixfmt_to_stride(win.pix_fmt); win.pitch[0] = var->xres_virtual * stride; win.pitch[1] = win.pitch[2] = (stride == 1) ? (var->xres_virtual >> 1) : 0; mmp_overlay_set_win(fbi->overlay, &win); } static int mmpfb_set_par(struct fb_info *info) { struct mmpfb_info *fbi = info->par; struct fb_var_screeninfo *var = &info->var; struct mmp_addr addr; struct mmp_mode mode; int ret; ret = var_update(info); if (ret != 0) return ret; /* set window/path according to new videomode */ fbmode_to_mmpmode(&mode, &fbi->mode, fbi->output_fmt); mmp_path_set_mode(fbi->path, &mode); /* set window related info */ mmpfb_set_win(info); /* set address always */ memset(&addr, 0, sizeof(addr)); addr.phys[0] = (var->yoffset * var->xres_virtual + var->xoffset) * var->bits_per_pixel / 8 + fbi->fb_start_dma; mmp_overlay_set_addr(fbi->overlay, &addr); return 0; } static void mmpfb_power(struct mmpfb_info *fbi, int power) { struct mmp_addr addr; struct fb_var_screeninfo *var = &fbi->fb_info->var; /* for power on, always set address/window again */ if (power) { /* set window related info */ mmpfb_set_win(fbi->fb_info); /* set address always */ memset(&addr, 0, sizeof(addr)); addr.phys[0] = fbi->fb_start_dma + (var->yoffset * var->xres_virtual + var->xoffset) * var->bits_per_pixel / 8; mmp_overlay_set_addr(fbi->overlay, &addr); } mmp_overlay_set_onoff(fbi->overlay, power); } static int mmpfb_blank(int blank, struct fb_info *info) { struct mmpfb_info *fbi = info->par; mmpfb_power(fbi, (blank == FB_BLANK_UNBLANK)); return 0; } static struct fb_ops mmpfb_ops = { .owner = THIS_MODULE, .fb_blank = mmpfb_blank, .fb_check_var = mmpfb_check_var, .fb_set_par = mmpfb_set_par, .fb_setcolreg = mmpfb_setcolreg, .fb_pan_display = mmpfb_pan_display, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, }; static int modes_setup(struct mmpfb_info *fbi) { struct fb_videomode *videomodes; struct mmp_mode *mmp_modes; struct fb_info *info = fbi->fb_info; int videomode_num, i; /* get videomodes from path */ videomode_num = mmp_path_get_modelist(fbi->path, &mmp_modes); if (!videomode_num) { dev_warn(fbi->dev, "can't get videomode num\n"); return 0; } /* put videomode list to info structure */ videomodes = kzalloc(sizeof(struct fb_videomode) * videomode_num, GFP_KERNEL); if (!videomodes) { dev_err(fbi->dev, "can't malloc video modes\n"); return -ENOMEM; } for (i = 0; i < videomode_num; i++) mmpmode_to_fbmode(&videomodes[i], &mmp_modes[i]); fb_videomode_to_modelist(videomodes, videomode_num, &info->modelist); /* set videomode[0] as default mode */ memcpy(&fbi->mode, &videomodes[0], sizeof(struct fb_videomode)); fbi->output_fmt = mmp_modes[0].pix_fmt_out; fb_videomode_to_var(&info->var, &fbi->mode); mmp_path_set_mode(fbi->path, &mmp_modes[0]); kfree(videomodes); return videomode_num; } static int fb_info_setup(struct fb_info *info, struct mmpfb_info *fbi) { int ret = 0; /* Initialise static fb parameters.*/ info->flags = FBINFO_DEFAULT | FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN; info->node = -1; strcpy(info->fix.id, fbi->name); info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.type_aux = 0; info->fix.xpanstep = 0; info->fix.ypanstep = info->var.yres; info->fix.ywrapstep = 0; info->fix.accel = FB_ACCEL_NONE; info->fix.smem_start = fbi->fb_start_dma; info->fix.smem_len = fbi->fb_size; info->fix.visual = (fbi->pix_fmt == PIXFMT_PSEUDOCOLOR) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; info->fix.line_length = info->var.xres_virtual * info->var.bits_per_pixel / 8; info->fbops = &mmpfb_ops; info->pseudo_palette = fbi->pseudo_palette; info->screen_base = fbi->fb_start; info->screen_size = fbi->fb_size; /* For FB framework: Allocate color map and Register framebuffer*/ if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) ret = -ENOMEM; return ret; } static void fb_info_clear(struct fb_info *info) { fb_dealloc_cmap(&info->cmap); } static int mmpfb_probe(struct platform_device *pdev) { struct mmp_buffer_driver_mach_info *mi; struct fb_info *info; struct mmpfb_info *fbi; int ret, modes_num; mi = pdev->dev.platform_data; if (mi == NULL) { dev_err(&pdev->dev, "no platform data defined\n"); return -EINVAL; } /* initialize fb */ info = framebuffer_alloc(sizeof(struct mmpfb_info), &pdev->dev); if (info == NULL) return -ENOMEM; fbi = info->par; /* init fb */ fbi->fb_info = info; platform_set_drvdata(pdev, fbi); fbi->dev = &pdev->dev; fbi->name = mi->name; fbi->pix_fmt = mi->default_pixfmt; pixfmt_to_var(&info->var, fbi->pix_fmt); mutex_init(&fbi->access_ok); /* get display path by name */ fbi->path = mmp_get_path(mi->path_name); if (!fbi->path) { dev_err(&pdev->dev, "can't get the path %s\n", mi->path_name); ret = -EINVAL; goto failed_destroy_mutex; } dev_info(fbi->dev, "path %s get\n", fbi->path->name); /* get overlay */ fbi->overlay = mmp_path_get_overlay(fbi->path, mi->overlay_id); if (!fbi->overlay) { ret = -EINVAL; goto failed_destroy_mutex; } /* set fetch used */ mmp_overlay_set_fetch(fbi->overlay, mi->dmafetch_id); modes_num = modes_setup(fbi); if (modes_num < 0) { ret = modes_num; goto failed_destroy_mutex; } /* * if get modes success, means not hotplug panels, use caculated buffer * or use default size */ if (modes_num > 0) { /* fix to 2* yres */ info->var.yres_virtual = info->var.yres * 2; /* Allocate framebuffer memory: size = modes xy *4 */ fbi->fb_size = info->var.xres_virtual * info->var.yres_virtual * info->var.bits_per_pixel / 8; } else { fbi->fb_size = MMPFB_DEFAULT_SIZE; } fbi->fb_start = dma_alloc_coherent(&pdev->dev, PAGE_ALIGN(fbi->fb_size), &fbi->fb_start_dma, GFP_KERNEL); if (fbi->fb_start == NULL) { dev_err(&pdev->dev, "can't alloc framebuffer\n"); ret = -ENOMEM; goto failed_destroy_mutex; } memset(fbi->fb_start, 0, fbi->fb_size); dev_info(fbi->dev, "fb %dk allocated\n", fbi->fb_size/1024); /* fb power on */ if (modes_num > 0) mmpfb_power(fbi, 1); ret = fb_info_setup(info, fbi); if (ret < 0) goto failed_free_buff; ret = register_framebuffer(info); if (ret < 0) { dev_err(&pdev->dev, "Failed to register fb: %d\n", ret); ret = -ENXIO; goto failed_clear_info; } dev_info(fbi->dev, "loaded to /dev/fb%d <%s>.\n", info->node, info->fix.id); #ifdef CONFIG_LOGO if (fbi->fb_start) { fb_prepare_logo(info, 0); fb_show_logo(info, 0); } #endif return 0; failed_clear_info: fb_info_clear(info); failed_free_buff: dma_free_coherent(&pdev->dev, PAGE_ALIGN(fbi->fb_size), fbi->fb_start, fbi->fb_start_dma); failed_destroy_mutex: mutex_destroy(&fbi->access_ok); dev_err(fbi->dev, "mmp-fb: frame buffer device init failed\n"); framebuffer_release(info); return ret; } static struct platform_driver mmpfb_driver = { .driver = { .name = "mmp-fb", }, .probe = mmpfb_probe, }; static int mmpfb_init(void) { return platform_driver_register(&mmpfb_driver); } module_init(mmpfb_init); MODULE_AUTHOR("Zhou Zhu <zhou.zhu@marvell.com>"); MODULE_DESCRIPTION("Framebuffer driver for Marvell displays"); MODULE_LICENSE("GPL");