+++ /dev/null
-/* Smedia Glamo 336x/337x driver
- *
- * (C) 2007-2008 by Openmoko, Inc.
- * Author: Harald Welte <laforge@openmoko.org>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/delay.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/io.h>
-#include <linux/mfd/glamo.h>
-
-#include <asm/div64.h>
-
-#ifdef CONFIG_PM
-#include <linux/pm.h>
-#endif
-
-#include <linux/glamofb.h>
-
-#include "glamo-regs.h"
-#include "glamo-core.h"
-
-static void glamofb_program_mode(struct glamofb_handle* glamo);
-
-struct glamofb_handle {
- struct glamo_core *core;
- struct fb_info *fb;
- struct device *dev;
- struct resource *reg;
- struct resource *fb_res;
- char __iomem *base;
- struct glamo_fb_platform_data *mach_info;
- char __iomem *cursor_addr;
- int cursor_on;
- u_int32_t pseudo_pal[16];
- spinlock_t lock_cmd;
- int blank_mode;
- int mode_set; /* 0 if the current display mode hasn't been set on the glamo */
- int output_enabled; /* 0 if the video output is disabled */
-};
-
-static void glamo_output_enable(struct glamofb_handle *gfb) {
- struct glamo_core *gcore = gfb->core;
-
- if (gfb->output_enabled)
- return;
-
- /* enable the pixel clock if off */
- glamo_engine_clkreg_set(gcore,
- GLAMO_ENGINE_LCD,
- GLAMO_CLOCK_LCD_EN_DCLK,
- GLAMO_CLOCK_LCD_EN_DCLK);
-
- gfb->output_enabled = 1;
- if (!gfb->mode_set)
- glamofb_program_mode(gfb);
-}
-
-static void glamo_output_disable(struct glamofb_handle *gfb) {
- struct glamo_core *gcore = gfb->core;
-
- if (!gfb->output_enabled)
- return;
-
- /* enable the pixel clock if off */
- glamo_engine_clkreg_set(gcore,
- GLAMO_ENGINE_LCD,
- GLAMO_CLOCK_LCD_EN_DCLK,
- 0);
-
- gfb->output_enabled = 0;
-}
-
-
-static int reg_read(struct glamofb_handle *glamo,
- u_int16_t reg)
-{
- int i = 0;
-
- for (i = 0; i != 2; i++)
- nop();
-
- return readw(glamo->base + reg);
-}
-
-static void reg_write(struct glamofb_handle *glamo,
- u_int16_t reg, u_int16_t val)
-{
- int i = 0;
-
- for (i = 0; i != 2; i++)
- nop();
-
- writew(val, glamo->base + reg);
-}
-
-static struct glamo_script glamo_regs[] = {
- { GLAMO_REG_LCD_MODE1, 0x0020 },
- /* no display rotation, no hardware cursor, no dither, no gamma,
- * no retrace flip, vsync low-active, hsync low active,
- * no TVCLK, no partial display, hw dest color from fb,
- * no partial display mode, LCD1, software flip, */
- { GLAMO_REG_LCD_MODE2, 0x9020 },
- /* video flip, no ptr, no ptr, dhclk off,
- * normal mode, no cpuif,
- * res, serial msb first, single fb, no fr ctrl,
- * cpu if bits all zero, no crc
- * 0000 0000 0010 0000 */
- { GLAMO_REG_LCD_MODE3, 0x0b40 },
- /* src data rgb565, res, 18bit rgb666
- * 000 01 011 0100 0000 */
- { GLAMO_REG_LCD_POLARITY, 0x440c },
- /* DE high active, no cpu/lcd if, cs0 force low, a0 low active,
- * np cpu if, 9bit serial data, sclk rising edge latch data
- * 01 00 0 100 0 000 01 0 0 */
- /* The following values assume 640*480@16bpp */
- { GLAMO_REG_LCD_A_BASE1, 0x0000 }, /* display A base address 15:0 */
- { GLAMO_REG_LCD_A_BASE2, 0x0000 }, /* display A base address 22:16 */
- { GLAMO_REG_LCD_CURSOR_BASE1, 0xC000 }, /* cursor base address 15:0 */
- { GLAMO_REG_LCD_CURSOR_BASE2, 0x0012 }, /* cursor base address 22:16 */
- { GLAMO_REG_LCD_COMMAND2, 0x0000 }, /* display page A */
-};
-
-static int glamofb_run_script(struct glamofb_handle *glamo,
- struct glamo_script *script, int len)
-{
- int i;
-
- if (glamo->core->suspending) {
- dev_err(&glamo->core->pdev->dev,
- "IGNORING glamofb_run_script while "
- "suspended\n");
- return -EBUSY;
- }
-
- for (i = 0; i < len; i++) {
- struct glamo_script *line = &script[i];
-
- if (line->reg == 0xffff)
- return 0;
- else if (line->reg == 0xfffe)
- msleep(line->val);
- else
- reg_write(glamo, script[i].reg, script[i].val);
- }
-
- return 0;
-}
-
-static int glamofb_check_var(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- struct glamofb_handle *glamo = info->par;
-
- if (glamo->core->suspending) {
- dev_err(&glamo->core->pdev->dev,
- "IGNORING glamofb_check_var while "
- "suspended\n");
- return -EBUSY;
- }
-
- if (var->bits_per_pixel != 16)
- var->bits_per_pixel = 16;
-
- var->height = glamo->mach_info->height;
- var->width = glamo->mach_info->width;
-
- /* FIXME: set rgb positions */
- switch (var->bits_per_pixel) {
- case 16:
- switch (reg_read(glamo, GLAMO_REG_LCD_MODE3) & 0xc000) {
- case GLAMO_LCD_SRC_RGB565:
- var->red.offset = 11;
- var->green.offset = 5;
- var->blue.offset = 0;
- var->red.length = 5;
- var->green.length = 6;
- var->blue.length = 5;
- var->transp.length = 0;
- break;
- case GLAMO_LCD_SRC_ARGB1555:
- var->transp.offset = 15;
- var->red.offset = 10;
- var->green.offset = 5;
- var->blue.offset = 0;
- var->transp.length = 1;
- var->red.length = 5;
- var->green.length = 5;
- var->blue.length = 5;
- break;
- case GLAMO_LCD_SRC_ARGB4444:
- var->transp.offset = 12;
- var->red.offset = 8;
- var->green.offset = 4;
- var->blue.offset = 0;
- var->transp.length = 4;
- var->red.length = 4;
- var->green.length = 4;
- var->blue.length = 4;
- break;
- }
- break;
- case 24:
- case 32:
- default:
- /* The Smedia Glamo doesn't support anything but 16bit color */
- printk(KERN_ERR
- "Smedia driver does not [yet?] support 24/32bpp\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static void reg_set_bit_mask(struct glamofb_handle *glamo,
- u_int16_t reg, u_int16_t mask,
- u_int16_t val)
-{
- u_int16_t tmp;
-
- val &= mask;
-
- tmp = reg_read(glamo, reg);
- tmp &= ~mask;
- tmp |= val;
- reg_write(glamo, reg, tmp);
-}
-
-#define GLAMO_LCD_WIDTH_MASK 0x03FF
-#define GLAMO_LCD_HEIGHT_MASK 0x03FF
-#define GLAMO_LCD_PITCH_MASK 0x07FE
-#define GLAMO_LCD_HV_TOTAL_MASK 0x03FF
-#define GLAMO_LCD_HV_RETR_START_MASK 0x03FF
-#define GLAMO_LCD_HV_RETR_END_MASK 0x03FF
-#define GLAMO_LCD_HV_RETR_DISP_START_MASK 0x03FF
-#define GLAMO_LCD_HV_RETR_DISP_END_MASK 0x03FF
-
-/* the caller has to enxure lock_cmd is held and we are in cmd mode */
-static void __rotate_lcd(struct glamofb_handle *glamo, __u32 rotation)
-{
- int glamo_rot;
-
- if (glamo->core->suspending) {
- dev_err(&glamo->core->pdev->dev,
- "IGNORING rotate_lcd while "
- "suspended\n");
- return;
- }
-
- switch (rotation) {
- case FB_ROTATE_CW:
- glamo_rot = GLAMO_LCD_ROT_MODE_90;
- break;
- case FB_ROTATE_UD:
- glamo_rot = GLAMO_LCD_ROT_MODE_180;
- break;
- case FB_ROTATE_CCW:
- glamo_rot = GLAMO_LCD_ROT_MODE_270;
- break;
- default:
- glamo_rot = GLAMO_LCD_ROT_MODE_0;
- break;
- }
-
- reg_set_bit_mask(glamo,
- GLAMO_REG_LCD_WIDTH,
- GLAMO_LCD_ROT_MODE_MASK,
- glamo_rot);
- reg_set_bit_mask(glamo,
- GLAMO_REG_LCD_MODE1,
- GLAMO_LCD_MODE1_ROTATE_EN,
- (glamo_rot != GLAMO_LCD_ROT_MODE_0) ?
- GLAMO_LCD_MODE1_ROTATE_EN : 0);
-}
-
-static void glamofb_program_mode(struct glamofb_handle* gfb) {
- int sync, bp, disp, fp, total;
- unsigned long flags;
- struct glamo_core *gcore = gfb->core;
- struct fb_var_screeninfo *var = &gfb->fb->var;
-
- dev_dbg(&gcore->pdev->dev,
- "glamofb_program_mode spin_lock_irqsave\n");
- spin_lock_irqsave(&gfb->lock_cmd, flags);
-
- if (glamofb_cmd_mode(gfb, 1))
- goto out_unlock;
-
- if (var->pixclock)
- glamo_engine_reclock(gcore,
- GLAMO_ENGINE_LCD,
- (1000000000UL / gfb->fb->var.pixclock) * 1000);
-
- reg_set_bit_mask(gfb,
- GLAMO_REG_LCD_WIDTH,
- GLAMO_LCD_WIDTH_MASK,
- var->xres);
- reg_set_bit_mask(gfb,
- GLAMO_REG_LCD_HEIGHT,
- GLAMO_LCD_HEIGHT_MASK,
- var->yres);
- reg_set_bit_mask(gfb,
- GLAMO_REG_LCD_PITCH,
- GLAMO_LCD_PITCH_MASK,
- gfb->fb->fix.line_length);
-
- /* honour the rotation request */
- __rotate_lcd(gfb, var->rotate);
-
- /* update scannout timings */
- sync = 0;
- bp = sync + var->hsync_len;
- disp = bp + var->left_margin;
- fp = disp + var->xres;
- total = fp + var->right_margin;
-
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_TOTAL,
- GLAMO_LCD_HV_TOTAL_MASK, total);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_RETR_START,
- GLAMO_LCD_HV_RETR_START_MASK, sync);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_RETR_END,
- GLAMO_LCD_HV_RETR_END_MASK, bp);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_DISP_START,
- GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_DISP_END,
- GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
-
- sync = 0;
- bp = sync + var->vsync_len;
- disp = bp + var->upper_margin;
- fp = disp + var->yres;
- total = fp + var->lower_margin;
-
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_TOTAL,
- GLAMO_LCD_HV_TOTAL_MASK, total);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_RETR_START,
- GLAMO_LCD_HV_RETR_START_MASK, sync);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_RETR_END,
- GLAMO_LCD_HV_RETR_END_MASK, bp);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_DISP_START,
- GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
- reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_DISP_END,
- GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
-
- glamofb_cmd_mode(gfb, 0);
-
- gfb->mode_set = 1;
-
-out_unlock:
- dev_dbg(&gcore->pdev->dev,
- "glamofb_program_mode spin_unlock_irqrestore\n");
- spin_unlock_irqrestore(&gfb->lock_cmd, flags);
-}
-
-
-static int glamofb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- return 0;
-}
-
-static struct fb_videomode *glamofb_find_mode(struct fb_info *info,
- struct fb_var_screeninfo *var) {
- struct glamofb_handle *glamo = info->par;
- struct glamo_fb_platform_data *mach_info = glamo->mach_info;
- struct fb_videomode *mode;
- int i;
-
- for(i = mach_info->num_modes, mode = mach_info->modes; i > 0; --i, ++mode) {
- if (mode->xres == var->xres &&
- mode->yres == var->yres)
- return mode;
- }
-
- return NULL;
-}
-
-static int glamofb_set_par(struct fb_info *info)
-{
- struct glamofb_handle *glamo = info->par;
- struct fb_var_screeninfo *var = &info->var;
- struct fb_videomode *mode;
-
- if (glamo->core->suspending) {
- dev_err(&glamo->core->pdev->dev,
- "IGNORING glamofb_set_par while "
- "suspended\n");
- return -EBUSY;
- }
-
- mode = glamofb_find_mode(info, var);
- if (!mode)
- return -EINVAL;
-
- fb_videomode_to_var(var, mode);
-
- info->mode = mode;
-
- glamo->mode_set = 0;
-
- switch(var->rotate) {
- case FB_ROTATE_CW:
- case FB_ROTATE_CCW:
- info->fix.line_length = (var->yres * var->bits_per_pixel) / 8;
- /* FIXME: Limit pixelclock */
- var->pixclock *= 2;
- break;
- default:
- info->fix.line_length = (var->xres * var->bits_per_pixel) / 8;
- break;
- }
-
- if(glamo->output_enabled)
- glamofb_program_mode(glamo);
-
- return 0;
-}
-
-static int glamofb_blank(int blank_mode, struct fb_info *info)
-{
- struct glamofb_handle *gfb = info->par;
-
- dev_dbg(gfb->dev, "glamofb_blank(%u)\n", blank_mode);
-
- switch (blank_mode) {
- case FB_BLANK_VSYNC_SUSPEND:
- case FB_BLANK_HSYNC_SUSPEND:
- /* FIXME: add pdata hook/flag to indicate whether
- * we should already switch off pixel clock here */
- break;
- case FB_BLANK_POWERDOWN:
- /* disable the pixel clock */
- glamo_output_disable(gfb);
- gfb->blank_mode = blank_mode;
- break;
- case FB_BLANK_UNBLANK:
- case FB_BLANK_NORMAL:
- glamo_output_enable(gfb);
- gfb->blank_mode = blank_mode;
- break;
- }
-
- /* FIXME: once we have proper clock management in glamo-core,
- * we can determine if other units need MCLK1 or the PLL, and
- * disable it if not used. */
- return 0;
-}
-
-static inline unsigned int chan_to_field(unsigned int chan,
- struct fb_bitfield *bf)
-{
- chan &= 0xffff;
- chan >>= 16 - bf->length;
- return chan << bf->offset;
-}
-
-static int glamofb_setcolreg(unsigned regno,
- unsigned red, unsigned green, unsigned blue,
- unsigned transp, struct fb_info *info)
-{
- struct glamofb_handle *glamo = info->par;
- unsigned int val;
-
- if (glamo->core->suspending) {
- dev_err(&glamo->core->pdev->dev,
- "IGNORING glamofb_set_par while "
- "suspended\n");
- return -EBUSY;
- }
-
- switch (glamo->fb->fix.visual) {
- case FB_VISUAL_TRUECOLOR:
- case FB_VISUAL_DIRECTCOLOR:
- /* true-colour, use pseuo-palette */
-
- if (regno < 16) {
- u32 *pal = glamo->fb->pseudo_palette;
-
- val = chan_to_field(red, &glamo->fb->var.red);
- val |= chan_to_field(green, &glamo->fb->var.green);
- val |= chan_to_field(blue, &glamo->fb->var.blue);
-
- pal[regno] = val;
- };
- break;
- default:
- return 1; /* unknown type */
- }
-
- return 0;
-}
-
-static int glamofb_ioctl(struct fb_info *info, unsigned int cmd,
- unsigned long arg) {
- struct glamofb_handle *gfb = (struct glamofb_handle*)info->par;
- struct glamo_core *gcore = gfb->core;
- int retval = -ENOTTY;
-
- switch (cmd) {
- case GLAMOFB_ENGINE_ENABLE:
- retval = glamo_engine_enable(gcore, arg);
- break;
- case GLAMOFB_ENGINE_DISABLE:
- retval = glamo_engine_disable(gcore, arg);
- break;
- case GLAMOFB_ENGINE_RESET:
- glamo_engine_reset(gcore, arg);
- retval = 0;
- break;
- default:
- break;
- }
-
- return retval;
-}
-
-
-#ifdef CONFIG_MFD_GLAMO_HWACCEL
-static inline void glamofb_vsync_wait(struct glamofb_handle *glamo,
- int line, int size, int range)
-{
- int count[2];
-
- do {
- count[0] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
- count[1] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
- } while (count[0] != count[1] ||
- (line < count[0] + range &&
- size > count[0] - range) ||
- count[0] < range * 2);
-}
-
-/*
- * Enable/disable the hardware cursor mode altogether
- * (for blinking and such, use glamofb_cursor()).
- */
-static void glamofb_cursor_onoff(struct glamofb_handle *glamo, int on)
-{
- int y, size;
-
- if (glamo->cursor_on) {
- y = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_POS);
- size = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE);
-
- glamofb_vsync_wait(glamo, y, size, 30);
- }
-
- reg_set_bit_mask(glamo, GLAMO_REG_LCD_MODE1,
- GLAMO_LCD_MODE1_CURSOR_EN,
- on ? GLAMO_LCD_MODE1_CURSOR_EN : 0);
- glamo->cursor_on = on;
-
- /* Hide the cursor by default */
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE, 0);
-}
-
-static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
-{
- struct glamofb_handle *glamo = info->par;
- unsigned long flags;
-
- spin_lock_irqsave(&glamo->lock_cmd, flags);
-
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE,
- cursor->enable ? cursor->image.width : 0);
-
- if (cursor->set & FB_CUR_SETPOS) {
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_POS,
- cursor->image.dx);
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_POS,
- cursor->image.dy);
- }
-
- if (cursor->set & FB_CUR_SETCMAP) {
- uint16_t fg = glamo->pseudo_pal[cursor->image.fg_color];
- uint16_t bg = glamo->pseudo_pal[cursor->image.bg_color];
-
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_FG_COLOR, fg);
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_BG_COLOR, bg);
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_DST_COLOR, fg);
- }
-
- if (cursor->set & FB_CUR_SETHOT)
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_PRESET,
- (cursor->hot.x << 8) | cursor->hot.y);
-
- if ((cursor->set & FB_CUR_SETSIZE) ||
- (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE))) {
- int x, y, pitch, op;
- const uint8_t *pcol = cursor->image.data;
- const uint8_t *pmsk = cursor->mask;
- uint8_t __iomem *dst = glamo->cursor_addr;
- uint8_t dcol = 0;
- uint8_t dmsk = 0;
- uint8_t byte = 0;
-
- if (cursor->image.depth > 1) {
- spin_unlock_irqrestore(&glamo->lock_cmd, flags);
- return -EINVAL;
- }
-
- pitch = ((cursor->image.width + 7) >> 2) & ~1;
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_PITCH,
- pitch);
- reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE,
- cursor->image.height);
-
- for (y = 0; y < cursor->image.height; y++) {
- byte = 0;
- for (x = 0; x < cursor->image.width; x++) {
- if ((x % 8) == 0) {
- dcol = *pcol++;
- dmsk = *pmsk++;
- } else {
- dcol >>= 1;
- dmsk >>= 1;
- }
-
- if (cursor->rop == ROP_COPY)
- op = (dmsk & 1) ?
- (dcol & 1) ? 1 : 3 : 0;
- else
- op = ((dmsk & 1) << 1) |
- ((dcol & 1) << 0);
- byte |= op << ((x & 3) << 1);
-
- if (x % 4 == 3) {
- writeb(byte, dst + x / 4);
- byte = 0;
- }
- }
- if (x % 4) {
- writeb(byte, dst + x / 4);
- byte = 0;
- }
-
- dst += pitch;
- }
- }
-
- spin_unlock_irqrestore(&glamo->lock_cmd, flags);
-
- return 0;
-}
-#endif
-
-static inline int glamofb_cmdq_empty(struct glamofb_handle *gfb)
-{
- /* DGCMdQempty -- 1 == command queue is empty */
- return reg_read(gfb, GLAMO_REG_LCD_STATUS1) & (1 << 15);
-}
-
-/* call holding gfb->lock_cmd when locking, until you unlock */
-int glamofb_cmd_mode(struct glamofb_handle *gfb, int on)
-{
- int timeout = 2000000;
-
- if (gfb->core->suspending) {
- dev_err(&gfb->core->pdev->dev,
- "IGNORING glamofb_cmd_mode while "
- "suspended\n");
- return -EBUSY;
- }
-
- dev_dbg(gfb->dev, "glamofb_cmd_mode(gfb=%p, on=%d)\n", gfb, on);
- if (on) {
- dev_dbg(gfb->dev, "%s: waiting for cmdq empty: ",
- __func__);
- while ((!glamofb_cmdq_empty(gfb)) && (timeout--))
- cpu_relax();
- if (timeout < 0) {
- printk(KERN_ERR"*************"
- "glamofb cmd_queue never got empty"
- "*************\n");
- return -EIO;
- }
- dev_dbg(gfb->dev, "empty!\n");
-
- /* display the entire frame then switch to command */
- reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
- GLAMO_LCD_CMD_TYPE_DISP |
- GLAMO_LCD_CMD_DATA_FIRE_VSYNC);
-
- /* wait until lcd idle */
- dev_dbg(gfb->dev, "waiting for lcd idle: ");
- timeout = 2000000;
- while ((!reg_read(gfb, GLAMO_REG_LCD_STATUS2) & (1 << 12)) &&
- (timeout--))
- cpu_relax();
- if (timeout < 0) {
- printk(KERN_ERR"*************"
- "glamofb lcd never idle"
- "*************\n");
- return -EIO;
- }
-
- mdelay(100);
-
- dev_dbg(gfb->dev, "cmd mode entered\n");
-
- } else {
- /* RGB interface needs vsync/hsync */
- if (reg_read(gfb, GLAMO_REG_LCD_MODE3) & GLAMO_LCD_MODE3_RGB)
- reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
- GLAMO_LCD_CMD_TYPE_DISP |
- GLAMO_LCD_CMD_DATA_DISP_SYNC);
-
- reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
- GLAMO_LCD_CMD_TYPE_DISP |
- GLAMO_LCD_CMD_DATA_DISP_FIRE);
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(glamofb_cmd_mode);
-
-
-int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val)
-{
- int timeout = 200000;
-
- if (gfb->core->suspending) {
- dev_err(&gfb->core->pdev->dev,
- "IGNORING glamofb_cmd_write while "
- "suspended\n");
- return -EBUSY;
- }
-
- dev_dbg(gfb->dev, "%s: waiting for cmdq empty\n", __func__);
- while ((!glamofb_cmdq_empty(gfb)) && (timeout--))
- yield();
- if (timeout < 0) {
- printk(KERN_ERR"*************"
- "glamofb cmd_queue never got empty"
- "*************\n");
- return 1;
- }
- dev_dbg(gfb->dev, "idle, writing 0x%04x\n", val);
-
- reg_write(gfb, GLAMO_REG_LCD_COMMAND1, val);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(glamofb_cmd_write);
-
-static struct fb_ops glamofb_ops = {
- .owner = THIS_MODULE,
- .fb_check_var = glamofb_check_var,
- .fb_pan_display = glamofb_pan_display,
- .fb_set_par = glamofb_set_par,
- .fb_blank = glamofb_blank,
- .fb_setcolreg = glamofb_setcolreg,
- .fb_ioctl = glamofb_ioctl,
-#ifdef CONFIG_MFD_GLAMO_HWACCEL
- .fb_cursor = glamofb_cursor,
-#endif
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-static int glamofb_init_regs(struct glamofb_handle *glamo)
-{
- struct fb_info *info = glamo->fb;
-
- glamofb_check_var(&info->var, info);
- glamofb_run_script(glamo, glamo_regs, ARRAY_SIZE(glamo_regs));
- glamofb_set_par(info);
-
- return 0;
-}
-
-static int __init glamofb_probe(struct platform_device *pdev)
-{
- int rc = -EIO;
- struct fb_info *fbinfo;
- struct glamofb_handle *glamofb;
- struct glamo_core *core = dev_get_drvdata(pdev->dev.parent);
- struct glamo_fb_platform_data *mach_info;
-
- printk(KERN_INFO "SMEDIA Glamo frame buffer driver (C) 2007 "
- "Openmoko, Inc.\n");
-
- if (!core->pdata || !core->pdata->fb_data)
- return -ENOENT;
-
-
- fbinfo = framebuffer_alloc(sizeof(struct glamofb_handle), &pdev->dev);
- if (!fbinfo)
- return -ENOMEM;
-
-
- glamofb = fbinfo->par;
- glamofb->fb = fbinfo;
- glamofb->dev = &pdev->dev;
-
- glamofb->blank_mode = FB_BLANK_POWERDOWN;
-
- strcpy(fbinfo->fix.id, "SMedia Glamo");
-
- glamofb->reg = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "glamo-fb-regs");
- if (!glamofb->reg) {
- dev_err(&pdev->dev, "platform device with no registers?\n");
- rc = -ENOENT;
- goto out_free;
- }
-
- glamofb->fb_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- "glamo-fb-mem");
- if (!glamofb->fb_res) {
- dev_err(&pdev->dev, "platform device with no memory ?\n");
- rc = -ENOENT;
- goto out_free;
- }
-
- glamofb->reg = request_mem_region(glamofb->reg->start,
- resource_size(glamofb->reg), pdev->name);
- if (!glamofb->reg) {
- dev_err(&pdev->dev, "failed to request mmio region\n");
- goto out_free;
- }
-
- glamofb->fb_res = request_mem_region(glamofb->fb_res->start,
- resource_size(glamofb->fb_res),
- pdev->name);
- if (!glamofb->fb_res) {
- dev_err(&pdev->dev, "failed to request vram region\n");
- goto out_release_reg;
- }
-
- /* we want to remap only the registers required for this core
- * driver. */
- glamofb->base = ioremap_nocache(glamofb->reg->start, resource_size(glamofb->reg));
- if (!glamofb->base) {
- dev_err(&pdev->dev, "failed to ioremap() mmio memory\n");
- goto out_release_fb;
- }
-
- fbinfo->fix.smem_start = (unsigned long) glamofb->fb_res->start;
- fbinfo->fix.smem_len = (__u32) resource_size(glamofb->fb_res);
-
- fbinfo->screen_base = ioremap(glamofb->fb_res->start,
- resource_size(glamofb->fb_res));
- if (!fbinfo->screen_base) {
- dev_err(&pdev->dev, "failed to ioremap() vram memory\n");
- goto out_release_fb;
- }
- glamofb->cursor_addr = fbinfo->screen_base + 0x12C000;
-
- platform_set_drvdata(pdev, glamofb);
-
- mach_info = core->pdata->fb_data;
- glamofb->core = core;
- glamofb->mach_info = mach_info;
-
- fbinfo->fix.visual = FB_VISUAL_TRUECOLOR;
- fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
- fbinfo->fix.type_aux = 0;
- fbinfo->fix.xpanstep = 0;
- fbinfo->fix.ypanstep = 0;
- fbinfo->fix.ywrapstep = 0;
- fbinfo->fix.accel = FB_ACCEL_GLAMO;
-
-
- fbinfo->fbops = &glamofb_ops;
- fbinfo->flags = FBINFO_FLAG_DEFAULT;
- fbinfo->pseudo_palette = &glamofb->pseudo_pal;
-
- fbinfo->mode = mach_info->modes;
- fb_videomode_to_var(&fbinfo->var, fbinfo->mode);
- fbinfo->var.bits_per_pixel = 16;
- fbinfo->var.nonstd = 0;
- fbinfo->var.activate = FB_ACTIVATE_NOW;
- fbinfo->var.height = mach_info->height;
- fbinfo->var.width = mach_info->width;
- fbinfo->var.accel_flags = 0;
- fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
-
- glamo_engine_enable(core, GLAMO_ENGINE_LCD);
- glamo_engine_reset(core, GLAMO_ENGINE_LCD);
- glamofb->output_enabled = 1;
- glamofb->mode_set = 1;
-
- dev_info(&pdev->dev, "spin_lock_init\n");
- spin_lock_init(&glamofb->lock_cmd);
- glamofb_init_regs(glamofb);
-#ifdef CONFIG_MFD_GLAMO_HWACCEL
- glamofb_cursor_onoff(glamofb, 1);
-#endif
-
- fb_videomode_to_modelist(mach_info->modes, mach_info->num_modes,
- &fbinfo->modelist);
-
- rc = register_framebuffer(fbinfo);
- if (rc < 0) {
- dev_err(&pdev->dev, "failed to register framebuffer\n");
- goto out_unmap_fb;
- }
-
- printk(KERN_INFO "fb%d: %s frame buffer device\n",
- fbinfo->node, fbinfo->fix.id);
-
- return 0;
-
-out_unmap_fb:
- iounmap(fbinfo->screen_base);
- iounmap(glamofb->base);
-out_release_fb:
- release_mem_region(glamofb->fb_res->start, resource_size(glamofb->fb_res));
-out_release_reg:
- release_mem_region(glamofb->reg->start, resource_size(glamofb->reg));
-out_free:
- framebuffer_release(fbinfo);
- return rc;
-}
-
-static int glamofb_remove(struct platform_device *pdev)
-{
- struct glamofb_handle *glamofb = platform_get_drvdata(pdev);
-
- platform_set_drvdata(pdev, NULL);
- iounmap(glamofb->base);
- release_mem_region(glamofb->reg->start, resource_size(glamofb->reg));
- kfree(glamofb);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int glamofb_suspend(struct device *dev)
-{
- struct glamofb_handle *gfb = dev_get_drvdata(dev);
-
- /* we need to stop anything touching our framebuffer */
- fb_set_suspend(gfb->fb, 1);
-
- /* seriously -- nobody is allowed to touch glamo memory when we
- * are suspended or we lock on nWAIT
- */
- /* iounmap(gfb->fb->screen_base); */
-
- return 0;
-}
-
-static int glamofb_resume(struct device *dev)
-{
- struct glamofb_handle *gfb = dev_get_drvdata(dev);
-
- /* OK let's allow framebuffer ops again */
- /* gfb->fb->screen_base = ioremap(gfb->fb_res->start,
- resource_size(gfb->fb_res)); */
- glamo_engine_enable(gfb->core, GLAMO_ENGINE_LCD);
- glamo_engine_reset(gfb->core, GLAMO_ENGINE_LCD);
-
- glamofb_init_regs(gfb);
-#ifdef CONFIG_MFD_GLAMO_HWACCEL
- glamofb_cursor_onoff(gfb, 1);
-#endif
-
- fb_set_suspend(gfb->fb, 0);
-
- return 0;
-}
-
-static struct dev_pm_ops glamofb_pm_ops = {
- .suspend = glamofb_suspend,
- .resume = glamofb_resume,
-};
-
-#define GLAMOFB_PM_OPS (&glamofb_pm_ops)
-
-#else
-#define GLAMOFB_PM_OPS NULL
-#endif
-
-static struct platform_driver glamofb_driver = {
- .probe = glamofb_probe,
- .remove = glamofb_remove,
- .driver = {
- .name = "glamo-fb",
- .owner = THIS_MODULE,
- .pm = GLAMOFB_PM_OPS
- },
-};
-
-static int __devinit glamofb_init(void)
-{
- return platform_driver_register(&glamofb_driver);
-}
-
-static void __exit glamofb_cleanup(void)
-{
- platform_driver_unregister(&glamofb_driver);
-}
-
-module_init(glamofb_init);
-module_exit(glamofb_cleanup);
-
-MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
-MODULE_DESCRIPTION("Smedia Glamo 336x/337x framebuffer driver");
-MODULE_LICENSE("GPL");
projects / openwrt / svn-archive / archive.git / blobdiff