1 /* Smedia Glamo 336x/337x driver
3 * (C) 2007-2008 by Openmoko, Inc.
4 * Author: Harald Welte <laforge@openmoko.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/string.h>
27 #include <linux/delay.h>
29 #include <linux/init.h>
30 #include <linux/platform_device.h>
31 #include <linux/spinlock.h>
33 #include <linux/mfd/glamo.h>
35 #include <asm/div64.h>
41 #include <linux/glamofb.h>
43 #include "glamo-regs.h"
44 #include "glamo-core.h"
46 static void glamofb_program_mode(struct glamofb_handle* glamo);
48 struct glamofb_handle {
49 struct glamo_core *core;
53 struct resource *fb_res;
55 struct glamo_fb_platform_data *mach_info;
56 char __iomem *cursor_addr;
58 u_int32_t pseudo_pal[16];
61 int mode_set; /* 0 if the current display mode hasn't been set on the glamo */
62 int output_enabled; /* 0 if the video output is disabled */
65 static void glamo_output_enable(struct glamofb_handle *gfb) {
66 struct glamo_core *gcore = gfb->core;
68 if (gfb->output_enabled)
71 /* enable the pixel clock if off */
72 glamo_engine_clkreg_set(gcore,
74 GLAMO_CLOCK_LCD_EN_DCLK,
75 GLAMO_CLOCK_LCD_EN_DCLK);
77 gfb->output_enabled = 1;
79 glamofb_program_mode(gfb);
82 static void glamo_output_disable(struct glamofb_handle *gfb) {
83 struct glamo_core *gcore = gfb->core;
85 if (!gfb->output_enabled)
88 /* enable the pixel clock if off */
89 glamo_engine_clkreg_set(gcore,
91 GLAMO_CLOCK_LCD_EN_DCLK,
94 gfb->output_enabled = 0;
98 static int reg_read(struct glamofb_handle *glamo,
103 for (i = 0; i != 2; i++)
106 return readw(glamo->base + reg);
109 static void reg_write(struct glamofb_handle *glamo,
110 u_int16_t reg, u_int16_t val)
114 for (i = 0; i != 2; i++)
117 writew(val, glamo->base + reg);
120 static struct glamo_script glamo_regs[] = {
121 { GLAMO_REG_LCD_MODE1, 0x0020 },
122 /* no display rotation, no hardware cursor, no dither, no gamma,
123 * no retrace flip, vsync low-active, hsync low active,
124 * no TVCLK, no partial display, hw dest color from fb,
125 * no partial display mode, LCD1, software flip, */
126 { GLAMO_REG_LCD_MODE2, 0x9020 },
127 /* video flip, no ptr, no ptr, dhclk off,
128 * normal mode, no cpuif,
129 * res, serial msb first, single fb, no fr ctrl,
130 * cpu if bits all zero, no crc
131 * 0000 0000 0010 0000 */
132 { GLAMO_REG_LCD_MODE3, 0x0b40 },
133 /* src data rgb565, res, 18bit rgb666
134 * 000 01 011 0100 0000 */
135 { GLAMO_REG_LCD_POLARITY, 0x440c },
136 /* DE high active, no cpu/lcd if, cs0 force low, a0 low active,
137 * np cpu if, 9bit serial data, sclk rising edge latch data
138 * 01 00 0 100 0 000 01 0 0 */
139 /* The following values assume 640*480@16bpp */
140 { GLAMO_REG_LCD_A_BASE1, 0x0000 }, /* display A base address 15:0 */
141 { GLAMO_REG_LCD_A_BASE2, 0x0000 }, /* display A base address 22:16 */
142 { GLAMO_REG_LCD_CURSOR_BASE1, 0xC000 }, /* cursor base address 15:0 */
143 { GLAMO_REG_LCD_CURSOR_BASE2, 0x0012 }, /* cursor base address 22:16 */
144 { GLAMO_REG_LCD_COMMAND2, 0x0000 }, /* display page A */
147 static int glamofb_run_script(struct glamofb_handle *glamo,
148 struct glamo_script *script, int len)
152 if (glamo->core->suspending) {
153 dev_err(&glamo->core->pdev->dev,
154 "IGNORING glamofb_run_script while "
159 for (i = 0; i < len; i++) {
160 struct glamo_script *line = &script[i];
162 if (line->reg == 0xffff)
164 else if (line->reg == 0xfffe)
167 reg_write(glamo, script[i].reg, script[i].val);
173 static int glamofb_check_var(struct fb_var_screeninfo *var,
174 struct fb_info *info)
176 struct glamofb_handle *glamo = info->par;
178 if (glamo->core->suspending) {
179 dev_err(&glamo->core->pdev->dev,
180 "IGNORING glamofb_check_var while "
185 if (var->bits_per_pixel != 16)
186 var->bits_per_pixel = 16;
188 var->height = glamo->mach_info->height;
189 var->width = glamo->mach_info->width;
191 /* FIXME: set rgb positions */
192 switch (var->bits_per_pixel) {
194 switch (reg_read(glamo, GLAMO_REG_LCD_MODE3) & 0xc000) {
195 case GLAMO_LCD_SRC_RGB565:
196 var->red.offset = 11;
197 var->green.offset = 5;
198 var->blue.offset = 0;
200 var->green.length = 6;
201 var->blue.length = 5;
202 var->transp.length = 0;
204 case GLAMO_LCD_SRC_ARGB1555:
205 var->transp.offset = 15;
206 var->red.offset = 10;
207 var->green.offset = 5;
208 var->blue.offset = 0;
209 var->transp.length = 1;
211 var->green.length = 5;
212 var->blue.length = 5;
214 case GLAMO_LCD_SRC_ARGB4444:
215 var->transp.offset = 12;
217 var->green.offset = 4;
218 var->blue.offset = 0;
219 var->transp.length = 4;
221 var->green.length = 4;
222 var->blue.length = 4;
229 /* The Smedia Glamo doesn't support anything but 16bit color */
231 "Smedia driver does not [yet?] support 24/32bpp\n");
238 static void reg_set_bit_mask(struct glamofb_handle *glamo,
239 u_int16_t reg, u_int16_t mask,
246 tmp = reg_read(glamo, reg);
249 reg_write(glamo, reg, tmp);
252 #define GLAMO_LCD_WIDTH_MASK 0x03FF
253 #define GLAMO_LCD_HEIGHT_MASK 0x03FF
254 #define GLAMO_LCD_PITCH_MASK 0x07FE
255 #define GLAMO_LCD_HV_TOTAL_MASK 0x03FF
256 #define GLAMO_LCD_HV_RETR_START_MASK 0x03FF
257 #define GLAMO_LCD_HV_RETR_END_MASK 0x03FF
258 #define GLAMO_LCD_HV_RETR_DISP_START_MASK 0x03FF
259 #define GLAMO_LCD_HV_RETR_DISP_END_MASK 0x03FF
261 /* the caller has to enxure lock_cmd is held and we are in cmd mode */
262 static void __rotate_lcd(struct glamofb_handle *glamo, __u32 rotation)
266 if (glamo->core->suspending) {
267 dev_err(&glamo->core->pdev->dev,
268 "IGNORING rotate_lcd while "
275 glamo_rot = GLAMO_LCD_ROT_MODE_90;
278 glamo_rot = GLAMO_LCD_ROT_MODE_180;
281 glamo_rot = GLAMO_LCD_ROT_MODE_270;
284 glamo_rot = GLAMO_LCD_ROT_MODE_0;
288 reg_set_bit_mask(glamo,
290 GLAMO_LCD_ROT_MODE_MASK,
292 reg_set_bit_mask(glamo,
294 GLAMO_LCD_MODE1_ROTATE_EN,
295 (glamo_rot != GLAMO_LCD_ROT_MODE_0) ?
296 GLAMO_LCD_MODE1_ROTATE_EN : 0);
299 static void glamofb_program_mode(struct glamofb_handle* gfb) {
300 int sync, bp, disp, fp, total;
302 struct glamo_core *gcore = gfb->core;
303 struct fb_var_screeninfo *var = &gfb->fb->var;
305 dev_dbg(&gcore->pdev->dev,
306 "glamofb_program_mode spin_lock_irqsave\n");
307 spin_lock_irqsave(&gfb->lock_cmd, flags);
309 if (glamofb_cmd_mode(gfb, 1))
313 glamo_engine_reclock(gcore,
315 (1000000000UL / gfb->fb->var.pixclock) * 1000);
317 reg_set_bit_mask(gfb,
319 GLAMO_LCD_WIDTH_MASK,
321 reg_set_bit_mask(gfb,
322 GLAMO_REG_LCD_HEIGHT,
323 GLAMO_LCD_HEIGHT_MASK,
325 reg_set_bit_mask(gfb,
327 GLAMO_LCD_PITCH_MASK,
328 gfb->fb->fix.line_length);
330 /* honour the rotation request */
331 __rotate_lcd(gfb, var->rotate);
333 /* update scannout timings */
335 bp = sync + var->hsync_len;
336 disp = bp + var->left_margin;
337 fp = disp + var->xres;
338 total = fp + var->right_margin;
340 reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_TOTAL,
341 GLAMO_LCD_HV_TOTAL_MASK, total);
342 reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_RETR_START,
343 GLAMO_LCD_HV_RETR_START_MASK, sync);
344 reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_RETR_END,
345 GLAMO_LCD_HV_RETR_END_MASK, bp);
346 reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_DISP_START,
347 GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
348 reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_DISP_END,
349 GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
352 bp = sync + var->vsync_len;
353 disp = bp + var->upper_margin;
354 fp = disp + var->yres;
355 total = fp + var->lower_margin;
357 reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_TOTAL,
358 GLAMO_LCD_HV_TOTAL_MASK, total);
359 reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_RETR_START,
360 GLAMO_LCD_HV_RETR_START_MASK, sync);
361 reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_RETR_END,
362 GLAMO_LCD_HV_RETR_END_MASK, bp);
363 reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_DISP_START,
364 GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
365 reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_DISP_END,
366 GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
368 glamofb_cmd_mode(gfb, 0);
373 dev_dbg(&gcore->pdev->dev,
374 "glamofb_program_mode spin_unlock_irqrestore\n");
375 spin_unlock_irqrestore(&gfb->lock_cmd, flags);
379 static int glamofb_pan_display(struct fb_var_screeninfo *var,
380 struct fb_info *info)
385 static struct fb_videomode *glamofb_find_mode(struct fb_info *info,
386 struct fb_var_screeninfo *var) {
387 struct glamofb_handle *glamo = info->par;
388 struct glamo_fb_platform_data *mach_info = glamo->mach_info;
389 struct fb_videomode *mode;
392 for(i = mach_info->num_modes, mode = mach_info->modes; i > 0; --i, ++mode) {
393 if (mode->xres == var->xres &&
394 mode->yres == var->yres)
401 static int glamofb_set_par(struct fb_info *info)
403 struct glamofb_handle *glamo = info->par;
404 struct fb_var_screeninfo *var = &info->var;
405 struct fb_videomode *mode;
407 if (glamo->core->suspending) {
408 dev_err(&glamo->core->pdev->dev,
409 "IGNORING glamofb_set_par while "
414 mode = glamofb_find_mode(info, var);
418 fb_videomode_to_var(var, mode);
424 switch(var->rotate) {
427 info->fix.line_length = (var->yres * var->bits_per_pixel) / 8;
428 /* FIXME: Limit pixelclock */
432 info->fix.line_length = (var->xres * var->bits_per_pixel) / 8;
436 if(glamo->output_enabled)
437 glamofb_program_mode(glamo);
442 static int glamofb_blank(int blank_mode, struct fb_info *info)
444 struct glamofb_handle *gfb = info->par;
446 dev_dbg(gfb->dev, "glamofb_blank(%u)\n", blank_mode);
448 switch (blank_mode) {
449 case FB_BLANK_VSYNC_SUSPEND:
450 case FB_BLANK_HSYNC_SUSPEND:
451 /* FIXME: add pdata hook/flag to indicate whether
452 * we should already switch off pixel clock here */
454 case FB_BLANK_POWERDOWN:
455 /* disable the pixel clock */
456 glamo_output_disable(gfb);
457 gfb->blank_mode = blank_mode;
459 case FB_BLANK_UNBLANK:
460 case FB_BLANK_NORMAL:
461 glamo_output_enable(gfb);
462 gfb->blank_mode = blank_mode;
466 /* FIXME: once we have proper clock management in glamo-core,
467 * we can determine if other units need MCLK1 or the PLL, and
468 * disable it if not used. */
472 static inline unsigned int chan_to_field(unsigned int chan,
473 struct fb_bitfield *bf)
476 chan >>= 16 - bf->length;
477 return chan << bf->offset;
480 static int glamofb_setcolreg(unsigned regno,
481 unsigned red, unsigned green, unsigned blue,
482 unsigned transp, struct fb_info *info)
484 struct glamofb_handle *glamo = info->par;
487 if (glamo->core->suspending) {
488 dev_err(&glamo->core->pdev->dev,
489 "IGNORING glamofb_set_par while "
494 switch (glamo->fb->fix.visual) {
495 case FB_VISUAL_TRUECOLOR:
496 case FB_VISUAL_DIRECTCOLOR:
497 /* true-colour, use pseuo-palette */
500 u32 *pal = glamo->fb->pseudo_palette;
502 val = chan_to_field(red, &glamo->fb->var.red);
503 val |= chan_to_field(green, &glamo->fb->var.green);
504 val |= chan_to_field(blue, &glamo->fb->var.blue);
510 return 1; /* unknown type */
516 static int glamofb_ioctl(struct fb_info *info, unsigned int cmd,
518 struct glamofb_handle *gfb = (struct glamofb_handle*)info->par;
519 struct glamo_core *gcore = gfb->core;
520 int retval = -ENOTTY;
523 case GLAMOFB_ENGINE_ENABLE:
524 retval = glamo_engine_enable(gcore, arg);
526 case GLAMOFB_ENGINE_DISABLE:
527 retval = glamo_engine_disable(gcore, arg);
529 case GLAMOFB_ENGINE_RESET:
530 glamo_engine_reset(gcore, arg);
541 #ifdef CONFIG_MFD_GLAMO_HWACCEL
542 static inline void glamofb_vsync_wait(struct glamofb_handle *glamo,
543 int line, int size, int range)
548 count[0] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
549 count[1] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
550 } while (count[0] != count[1] ||
551 (line < count[0] + range &&
552 size > count[0] - range) ||
553 count[0] < range * 2);
557 * Enable/disable the hardware cursor mode altogether
558 * (for blinking and such, use glamofb_cursor()).
560 static void glamofb_cursor_onoff(struct glamofb_handle *glamo, int on)
564 if (glamo->cursor_on) {
565 y = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_POS);
566 size = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE);
568 glamofb_vsync_wait(glamo, y, size, 30);
571 reg_set_bit_mask(glamo, GLAMO_REG_LCD_MODE1,
572 GLAMO_LCD_MODE1_CURSOR_EN,
573 on ? GLAMO_LCD_MODE1_CURSOR_EN : 0);
574 glamo->cursor_on = on;
576 /* Hide the cursor by default */
577 reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE, 0);
580 static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
582 struct glamofb_handle *glamo = info->par;
585 spin_lock_irqsave(&glamo->lock_cmd, flags);
587 reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE,
588 cursor->enable ? cursor->image.width : 0);
590 if (cursor->set & FB_CUR_SETPOS) {
591 reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_POS,
593 reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_POS,
597 if (cursor->set & FB_CUR_SETCMAP) {
598 uint16_t fg = glamo->pseudo_pal[cursor->image.fg_color];
599 uint16_t bg = glamo->pseudo_pal[cursor->image.bg_color];
601 reg_write(glamo, GLAMO_REG_LCD_CURSOR_FG_COLOR, fg);
602 reg_write(glamo, GLAMO_REG_LCD_CURSOR_BG_COLOR, bg);
603 reg_write(glamo, GLAMO_REG_LCD_CURSOR_DST_COLOR, fg);
606 if (cursor->set & FB_CUR_SETHOT)
607 reg_write(glamo, GLAMO_REG_LCD_CURSOR_PRESET,
608 (cursor->hot.x << 8) | cursor->hot.y);
610 if ((cursor->set & FB_CUR_SETSIZE) ||
611 (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE))) {
613 const uint8_t *pcol = cursor->image.data;
614 const uint8_t *pmsk = cursor->mask;
615 uint8_t __iomem *dst = glamo->cursor_addr;
620 if (cursor->image.depth > 1) {
621 spin_unlock_irqrestore(&glamo->lock_cmd, flags);
625 pitch = ((cursor->image.width + 7) >> 2) & ~1;
626 reg_write(glamo, GLAMO_REG_LCD_CURSOR_PITCH,
628 reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE,
629 cursor->image.height);
631 for (y = 0; y < cursor->image.height; y++) {
633 for (x = 0; x < cursor->image.width; x++) {
642 if (cursor->rop == ROP_COPY)
644 (dcol & 1) ? 1 : 3 : 0;
646 op = ((dmsk & 1) << 1) |
648 byte |= op << ((x & 3) << 1);
651 writeb(byte, dst + x / 4);
656 writeb(byte, dst + x / 4);
664 spin_unlock_irqrestore(&glamo->lock_cmd, flags);
670 static inline int glamofb_cmdq_empty(struct glamofb_handle *gfb)
672 /* DGCMdQempty -- 1 == command queue is empty */
673 return reg_read(gfb, GLAMO_REG_LCD_STATUS1) & (1 << 15);
676 /* call holding gfb->lock_cmd when locking, until you unlock */
677 int glamofb_cmd_mode(struct glamofb_handle *gfb, int on)
679 int timeout = 2000000;
681 if (gfb->core->suspending) {
682 dev_err(&gfb->core->pdev->dev,
683 "IGNORING glamofb_cmd_mode while "
688 dev_dbg(gfb->dev, "glamofb_cmd_mode(gfb=%p, on=%d)\n", gfb, on);
690 dev_dbg(gfb->dev, "%s: waiting for cmdq empty: ",
692 while ((!glamofb_cmdq_empty(gfb)) && (timeout--))
695 printk(KERN_ERR"*************"
696 "glamofb cmd_queue never got empty"
700 dev_dbg(gfb->dev, "empty!\n");
702 /* display the entire frame then switch to command */
703 reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
704 GLAMO_LCD_CMD_TYPE_DISP |
705 GLAMO_LCD_CMD_DATA_FIRE_VSYNC);
707 /* wait until lcd idle */
708 dev_dbg(gfb->dev, "waiting for lcd idle: ");
710 while ((!reg_read(gfb, GLAMO_REG_LCD_STATUS2) & (1 << 12)) &&
714 printk(KERN_ERR"*************"
715 "glamofb lcd never idle"
722 dev_dbg(gfb->dev, "cmd mode entered\n");
725 /* RGB interface needs vsync/hsync */
726 if (reg_read(gfb, GLAMO_REG_LCD_MODE3) & GLAMO_LCD_MODE3_RGB)
727 reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
728 GLAMO_LCD_CMD_TYPE_DISP |
729 GLAMO_LCD_CMD_DATA_DISP_SYNC);
731 reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
732 GLAMO_LCD_CMD_TYPE_DISP |
733 GLAMO_LCD_CMD_DATA_DISP_FIRE);
738 EXPORT_SYMBOL_GPL(glamofb_cmd_mode);
741 int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val)
743 int timeout = 200000;
745 if (gfb->core->suspending) {
746 dev_err(&gfb->core->pdev->dev,
747 "IGNORING glamofb_cmd_write while "
752 dev_dbg(gfb->dev, "%s: waiting for cmdq empty\n", __func__);
753 while ((!glamofb_cmdq_empty(gfb)) && (timeout--))
756 printk(KERN_ERR"*************"
757 "glamofb cmd_queue never got empty"
761 dev_dbg(gfb->dev, "idle, writing 0x%04x\n", val);
763 reg_write(gfb, GLAMO_REG_LCD_COMMAND1, val);
767 EXPORT_SYMBOL_GPL(glamofb_cmd_write);
769 static struct fb_ops glamofb_ops = {
770 .owner = THIS_MODULE,
771 .fb_check_var = glamofb_check_var,
772 .fb_pan_display = glamofb_pan_display,
773 .fb_set_par = glamofb_set_par,
774 .fb_blank = glamofb_blank,
775 .fb_setcolreg = glamofb_setcolreg,
776 .fb_ioctl = glamofb_ioctl,
777 #ifdef CONFIG_MFD_GLAMO_HWACCEL
778 .fb_cursor = glamofb_cursor,
780 .fb_fillrect = cfb_fillrect,
781 .fb_copyarea = cfb_copyarea,
782 .fb_imageblit = cfb_imageblit,
785 static int glamofb_init_regs(struct glamofb_handle *glamo)
787 struct fb_info *info = glamo->fb;
789 glamofb_check_var(&info->var, info);
790 glamofb_run_script(glamo, glamo_regs, ARRAY_SIZE(glamo_regs));
791 glamofb_set_par(info);
796 static int __init glamofb_probe(struct platform_device *pdev)
799 struct fb_info *fbinfo;
800 struct glamofb_handle *glamofb;
801 struct glamo_core *core = dev_get_drvdata(pdev->dev.parent);
802 struct glamo_fb_platform_data *mach_info;
804 printk(KERN_INFO "SMEDIA Glamo frame buffer driver (C) 2007 "
807 if (!core->pdata || !core->pdata->fb_data)
811 fbinfo = framebuffer_alloc(sizeof(struct glamofb_handle), &pdev->dev);
816 glamofb = fbinfo->par;
817 glamofb->fb = fbinfo;
818 glamofb->dev = &pdev->dev;
820 glamofb->blank_mode = FB_BLANK_POWERDOWN;
822 strcpy(fbinfo->fix.id, "SMedia Glamo");
824 glamofb->reg = platform_get_resource_byname(pdev, IORESOURCE_MEM,
827 dev_err(&pdev->dev, "platform device with no registers?\n");
832 glamofb->fb_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
834 if (!glamofb->fb_res) {
835 dev_err(&pdev->dev, "platform device with no memory ?\n");
840 glamofb->reg = request_mem_region(glamofb->reg->start,
841 resource_size(glamofb->reg), pdev->name);
843 dev_err(&pdev->dev, "failed to request mmio region\n");
847 glamofb->fb_res = request_mem_region(glamofb->fb_res->start,
848 resource_size(glamofb->fb_res),
850 if (!glamofb->fb_res) {
851 dev_err(&pdev->dev, "failed to request vram region\n");
852 goto out_release_reg;
855 /* we want to remap only the registers required for this core
857 glamofb->base = ioremap_nocache(glamofb->reg->start, resource_size(glamofb->reg));
858 if (!glamofb->base) {
859 dev_err(&pdev->dev, "failed to ioremap() mmio memory\n");
863 fbinfo->fix.smem_start = (unsigned long) glamofb->fb_res->start;
864 fbinfo->fix.smem_len = (__u32) resource_size(glamofb->fb_res);
866 fbinfo->screen_base = ioremap(glamofb->fb_res->start,
867 resource_size(glamofb->fb_res));
868 if (!fbinfo->screen_base) {
869 dev_err(&pdev->dev, "failed to ioremap() vram memory\n");
872 glamofb->cursor_addr = fbinfo->screen_base + 0x12C000;
874 platform_set_drvdata(pdev, glamofb);
876 mach_info = core->pdata->fb_data;
877 glamofb->core = core;
878 glamofb->mach_info = mach_info;
880 fbinfo->fix.visual = FB_VISUAL_TRUECOLOR;
881 fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
882 fbinfo->fix.type_aux = 0;
883 fbinfo->fix.xpanstep = 0;
884 fbinfo->fix.ypanstep = 0;
885 fbinfo->fix.ywrapstep = 0;
886 fbinfo->fix.accel = FB_ACCEL_GLAMO;
889 fbinfo->fbops = &glamofb_ops;
890 fbinfo->flags = FBINFO_FLAG_DEFAULT;
891 fbinfo->pseudo_palette = &glamofb->pseudo_pal;
893 fbinfo->mode = mach_info->modes;
894 fb_videomode_to_var(&fbinfo->var, fbinfo->mode);
895 fbinfo->var.bits_per_pixel = 16;
896 fbinfo->var.nonstd = 0;
897 fbinfo->var.activate = FB_ACTIVATE_NOW;
898 fbinfo->var.height = mach_info->height;
899 fbinfo->var.width = mach_info->width;
900 fbinfo->var.accel_flags = 0;
901 fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
903 glamo_engine_enable(core, GLAMO_ENGINE_LCD);
904 glamo_engine_reset(core, GLAMO_ENGINE_LCD);
905 glamofb->output_enabled = 1;
906 glamofb->mode_set = 1;
908 dev_info(&pdev->dev, "spin_lock_init\n");
909 spin_lock_init(&glamofb->lock_cmd);
910 glamofb_init_regs(glamofb);
911 #ifdef CONFIG_MFD_GLAMO_HWACCEL
912 glamofb_cursor_onoff(glamofb, 1);
915 fb_videomode_to_modelist(mach_info->modes, mach_info->num_modes,
918 rc = register_framebuffer(fbinfo);
920 dev_err(&pdev->dev, "failed to register framebuffer\n");
924 printk(KERN_INFO "fb%d: %s frame buffer device\n",
925 fbinfo->node, fbinfo->fix.id);
930 iounmap(fbinfo->screen_base);
931 iounmap(glamofb->base);
933 release_mem_region(glamofb->fb_res->start, resource_size(glamofb->fb_res));
935 release_mem_region(glamofb->reg->start, resource_size(glamofb->reg));
937 framebuffer_release(fbinfo);
941 static int glamofb_remove(struct platform_device *pdev)
943 struct glamofb_handle *glamofb = platform_get_drvdata(pdev);
945 platform_set_drvdata(pdev, NULL);
946 iounmap(glamofb->base);
947 release_mem_region(glamofb->reg->start, resource_size(glamofb->reg));
955 static int glamofb_suspend(struct device *dev)
957 struct glamofb_handle *gfb = dev_get_drvdata(dev);
959 /* we need to stop anything touching our framebuffer */
960 fb_set_suspend(gfb->fb, 1);
962 /* seriously -- nobody is allowed to touch glamo memory when we
963 * are suspended or we lock on nWAIT
965 /* iounmap(gfb->fb->screen_base); */
970 static int glamofb_resume(struct device *dev)
972 struct glamofb_handle *gfb = dev_get_drvdata(dev);
974 /* OK let's allow framebuffer ops again */
975 /* gfb->fb->screen_base = ioremap(gfb->fb_res->start,
976 resource_size(gfb->fb_res)); */
977 glamo_engine_enable(gfb->core, GLAMO_ENGINE_LCD);
978 glamo_engine_reset(gfb->core, GLAMO_ENGINE_LCD);
980 glamofb_init_regs(gfb);
981 #ifdef CONFIG_MFD_GLAMO_HWACCEL
982 glamofb_cursor_onoff(gfb, 1);
985 fb_set_suspend(gfb->fb, 0);
990 static struct dev_pm_ops glamofb_pm_ops = {
991 .suspend = glamofb_suspend,
992 .resume = glamofb_resume,
995 #define GLAMOFB_PM_OPS (&glamofb_pm_ops)
998 #define GLAMOFB_PM_OPS NULL
1001 static struct platform_driver glamofb_driver = {
1002 .probe = glamofb_probe,
1003 .remove = glamofb_remove,
1006 .owner = THIS_MODULE,
1007 .pm = GLAMOFB_PM_OPS
1011 static int __devinit glamofb_init(void)
1013 return platform_driver_register(&glamofb_driver);
1016 static void __exit glamofb_cleanup(void)
1018 platform_driver_unregister(&glamofb_driver);
1021 module_init(glamofb_init);
1022 module_exit(glamofb_cleanup);
1024 MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
1025 MODULE_DESCRIPTION("Smedia Glamo 336x/337x framebuffer driver");
1026 MODULE_LICENSE("GPL");