--- /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/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/vmalloc.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/wait.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/uaccess.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"
+
+#ifndef DEBUG
+#define GLAMO_LOG(...)
+#else
+#define GLAMO_LOG(...) \
+do { \
+ printk(KERN_DEBUG "in %s:%s:%d", __FILE__, __func__, __LINE__); \
+ printk(KERN_DEBUG __VA_ARGS__); \
+} while (0);
+#endif
+
+
+#define RESSIZE(ressource) (((ressource)->end - (ressource)->start)+1)
+
+struct glamofb_handle {
+ struct fb_info *fb;
+ struct device *dev;
+ struct resource *reg;
+ struct resource *fb_res;
+ char __iomem *base;
+ struct glamofb_platform_data *mach_info;
+ char __iomem *cursor_addr;
+ int cursor_on;
+ u_int32_t pseudo_pal[16];
+ spinlock_t lock_cmd;
+ int angle; /* Current rotation angle */
+ int blank_mode;
+};
+
+/* 'sibling' spi device for lcm init */
+static struct platform_device glamo_spi_dev = {
+ .name = "glamo-lcm-spi",
+};
+
+
+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_B_BASE1, 0x6000 }, /* display B base address 15:0 */
+ { GLAMO_REG_LCD_B_BASE2, 0x0009 }, /* display B 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->mach_info->glamo->suspending) {
+ dev_err(&glamo->mach_info->glamo->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->mach_info->glamo->suspending) {
+ dev_err(&glamo->mach_info->glamo->pdev->dev,
+ "IGNORING glamofb_check_var while "
+ "suspended\n");
+ return -EBUSY;
+ }
+
+ if (var->yres > glamo->mach_info->yres.max)
+ var->yres = glamo->mach_info->yres.max;
+ else if (var->yres < glamo->mach_info->yres.min)
+ var->yres = glamo->mach_info->yres.min;
+
+ if (var->xres > glamo->mach_info->xres.max)
+ var->xres = glamo->mach_info->xres.max;
+ else if (var->xres < glamo->mach_info->xres.min)
+ var->xres = glamo->mach_info->xres.min;
+
+ if (var->bits_per_pixel > glamo->mach_info->bpp.max)
+ var->bits_per_pixel = glamo->mach_info->bpp.max;
+ else if (var->bits_per_pixel < glamo->mach_info->bpp.min)
+ var->bits_per_pixel = glamo->mach_info->bpp.min;
+
+ /* 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
+
+enum orientation {ORIENTATION_PORTRAIT, ORIENTATION_LANDSCAPE};
+
+/* 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->mach_info->glamo->suspending) {
+ dev_err(&glamo->mach_info->glamo->pdev->dev,
+ "IGNORING rotate_lcd while "
+ "suspended\n");
+ return;
+ }
+
+ switch (rotation) {
+ case FB_ROTATE_UR:
+ glamo_rot = GLAMO_LCD_ROT_MODE_0;
+ glamo->angle = 0;
+ break;
+ case FB_ROTATE_CW:
+ glamo_rot = GLAMO_LCD_ROT_MODE_90;
+ glamo->angle = 90;
+ break;
+ case FB_ROTATE_UD:
+ glamo_rot = GLAMO_LCD_ROT_MODE_180;
+ glamo->angle = 180;
+ break;
+ case FB_ROTATE_CCW:
+ glamo_rot = GLAMO_LCD_ROT_MODE_270;
+ glamo->angle = 270;
+ break;
+ default:
+ glamo->angle = 0;
+ 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 enum orientation get_orientation(struct fb_var_screeninfo *var)
+{
+ if (var->xres <= var->yres)
+ return ORIENTATION_PORTRAIT;
+
+ return ORIENTATION_LANDSCAPE;
+}
+
+static int will_orientation_change(struct fb_var_screeninfo *var)
+{
+ enum orientation orient = get_orientation(var);
+
+ switch (orient) {
+ case ORIENTATION_LANDSCAPE:
+ if (var->rotate == FB_ROTATE_UR || var->rotate == FB_ROTATE_UD)
+ return 1;
+ break;
+ case ORIENTATION_PORTRAIT:
+ if (var->rotate == FB_ROTATE_CW || var->rotate == FB_ROTATE_CCW)
+ return 1;
+ break;
+ }
+ return 0;
+}
+
+static void glamofb_update_lcd_controller(struct glamofb_handle *glamo,
+ struct fb_var_screeninfo *var)
+{
+ int sync, bp, disp, fp, total, xres, yres, pitch;
+ int uninitialized_var(orientation_changing);
+ unsigned long flags;
+
+ if (!glamo || !var)
+ return;
+
+ if (glamo->mach_info->glamo->suspending) {
+ dev_err(&glamo->mach_info->glamo->pdev->dev,
+ "IGNORING glamofb_update_lcd_controller while "
+ "suspended\n");
+ return;
+ }
+
+ dev_dbg(&glamo->mach_info->glamo->pdev->dev,
+ "glamofb_update_lcd_controller spin_lock_irqsave\n");
+ spin_lock_irqsave(&glamo->lock_cmd, flags);
+
+ if (glamofb_cmd_mode(glamo, 1))
+ goto out_unlock;
+
+/* if (var->pixclock)
+ glamo_engine_reclock(glamo->mach_info->glamo,
+ GLAMO_ENGINE_LCD,
+ var->pixclock);*/
+
+ xres = var->xres;
+ yres = var->yres;
+
+ orientation_changing = will_orientation_change(var);
+ /* Adjust the pitch according to new orientation to come. */
+ if (orientation_changing)
+ pitch = var->yres * var->bits_per_pixel / 8;
+ else
+ pitch = var->xres * var->bits_per_pixel / 8;
+
+ reg_set_bit_mask(glamo,
+ GLAMO_REG_LCD_WIDTH,
+ GLAMO_LCD_WIDTH_MASK,
+ xres);
+ reg_set_bit_mask(glamo,
+ GLAMO_REG_LCD_HEIGHT,
+ GLAMO_LCD_HEIGHT_MASK,
+ yres);
+ reg_set_bit_mask(glamo,
+ GLAMO_REG_LCD_PITCH,
+ GLAMO_LCD_PITCH_MASK,
+ pitch);
+
+ /* honour the rotation request */
+ __rotate_lcd(glamo, var->rotate);
+
+ if (orientation_changing) {
+ var->xres_virtual = yres;
+ var->xres = yres;
+ var->xres_virtual *= 2;
+ var->yres_virtual = xres;
+ var->yres = xres;
+ } else {
+ var->xres_virtual = xres;
+ var->yres_virtual = yres;
+ var->yres_virtual *= 2;
+ }
+
+ /* update scannout timings */
+ sync = 0;
+ bp = sync + var->hsync_len;
+ disp = bp + var->left_margin;
+ fp = disp + xres;
+ total = fp + var->right_margin;
+
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_HORIZ_TOTAL,
+ GLAMO_LCD_HV_TOTAL_MASK, total);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_HORIZ_RETR_START,
+ GLAMO_LCD_HV_RETR_START_MASK, sync);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_HORIZ_RETR_END,
+ GLAMO_LCD_HV_RETR_END_MASK, bp);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_HORIZ_DISP_START,
+ GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
+ reg_set_bit_mask(glamo, 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 + yres;
+ total = fp + var->lower_margin;
+
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_VERT_TOTAL,
+ GLAMO_LCD_HV_TOTAL_MASK, total);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_VERT_RETR_START,
+ GLAMO_LCD_HV_RETR_START_MASK, sync);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_VERT_RETR_END,
+ GLAMO_LCD_HV_RETR_END_MASK, bp);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_VERT_DISP_START,
+ GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
+ reg_set_bit_mask(glamo, GLAMO_REG_LCD_VERT_DISP_END,
+ GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
+
+ glamofb_cmd_mode(glamo, 0);
+
+out_unlock:
+ dev_dbg(&glamo->mach_info->glamo->pdev->dev,
+ "glamofb_update_lcd_controller spin_unlock_irqrestore\n");
+ spin_unlock_irqrestore(&glamo->lock_cmd, flags);
+}
+
+static int glamofb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct glamofb_handle *glamo = info->par;
+ u_int16_t page = var->yoffset / glamo->mach_info->yres.defval;
+ reg_write(glamo, GLAMO_REG_LCD_COMMAND2, page);
+
+ return 0;
+}
+
+static int glamofb_set_par(struct fb_info *info)
+{
+ struct glamofb_handle *glamo = info->par;
+ struct fb_var_screeninfo *var = &info->var;
+
+ if (glamo->mach_info->glamo->suspending) {
+ dev_err(&glamo->mach_info->glamo->pdev->dev,
+ "IGNORING glamofb_set_par while "
+ "suspended\n");
+ return -EBUSY;
+ }
+
+ switch (var->bits_per_pixel) {
+ case 16:
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ break;
+ default:
+ printk("Smedia driver doesn't support != 16bpp\n");
+ return -EINVAL;
+ }
+
+ info->fix.line_length = (var->xres * var->bits_per_pixel) / 8;
+
+ glamofb_update_lcd_controller(glamo, var);
+
+ return 0;
+}
+
+
+static void notify_blank(struct fb_info *info, int blank_mode)
+{
+ struct fb_event event;
+
+ event.info = info;
+ event.data = &blank_mode;
+ fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
+}
+
+
+static int glamofb_blank(int blank_mode, struct fb_info *info)
+{
+ struct glamofb_handle *gfb = info->par;
+ struct glamo_core *gcore = gfb->mach_info->glamo;
+
+ 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:
+ /* Simulating FB_BLANK_NORMAL allow turning off backlight */
+ if (gfb->blank_mode != FB_BLANK_NORMAL)
+ notify_blank(info, FB_BLANK_NORMAL);
+
+ /* LCM need notification before pixel clock is stopped */
+ notify_blank(info, blank_mode);
+
+ /* disable the pixel clock */
+ glamo_engine_clkreg_set(gcore, GLAMO_ENGINE_LCD,
+ GLAMO_CLOCK_LCD_EN_DCLK, 0);
+ gfb->blank_mode = blank_mode;
+ break;
+ case FB_BLANK_UNBLANK:
+ case FB_BLANK_NORMAL:
+ /* enable the pixel clock if off */
+ if (gfb->blank_mode == FB_BLANK_POWERDOWN)
+ glamo_engine_clkreg_set(gcore,
+ GLAMO_ENGINE_LCD,
+ GLAMO_CLOCK_LCD_EN_DCLK,
+ GLAMO_CLOCK_LCD_EN_DCLK);
+
+ notify_blank(info, blank_mode);
+ 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->mach_info->glamo->suspending) {
+ dev_err(&glamo->mach_info->glamo->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;
+}
+
+#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->mach_info->glamo->suspending) {
+ dev_err(&gfb->mach_info->glamo->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--))
+ /* yield() */;
+ 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--))
+ /* yield() */;
+ 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->mach_info->glamo->suspending) {
+ dev_err(&gfb->mach_info->glamo->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,
+#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 glamofb_platform_data *mach_info = pdev->dev.platform_data;
+
+ printk(KERN_INFO "SMEDIA Glamo frame buffer driver (C) 2007 "
+ "Openmoko, Inc.\n");
+
+ fbinfo = framebuffer_alloc(sizeof(struct glamofb_handle), &pdev->dev);
+ if (!fbinfo)
+ return -ENOMEM;
+
+ glamofb = fbinfo->par;
+ glamofb->fb = fbinfo;
+ glamofb->dev = &pdev->dev;
+
+ glamofb->angle = 0;
+ 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,
+ RESSIZE(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,
+ mach_info->fb_mem_size,
+ 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(glamofb->reg->start, RESSIZE(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 = mach_info->fb_mem_size;
+
+ fbinfo->screen_base = ioremap(glamofb->fb_res->start,
+ RESSIZE(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);
+
+ glamofb->mach_info = pdev->dev.platform_data;
+
+ 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 = mach_info->yres.defval;
+ fbinfo->fix.ywrapstep = 0;
+ fbinfo->fix.accel = FB_ACCEL_GLAMO;
+
+ 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; /* FIXME */
+ fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
+
+ fbinfo->fbops = &glamofb_ops;
+ fbinfo->flags = FBINFO_FLAG_DEFAULT;
+ fbinfo->pseudo_palette = &glamofb->pseudo_pal;
+
+ fbinfo->var.xres = mach_info->xres.defval;
+ fbinfo->var.xres_virtual = mach_info->xres.defval;
+ fbinfo->var.yres = mach_info->yres.defval;
+ fbinfo->var.yres_virtual = mach_info->yres.defval * 2;
+ fbinfo->var.bits_per_pixel = mach_info->bpp.defval;
+
+ fbinfo->var.pixclock = mach_info->pixclock;
+ fbinfo->var.left_margin = mach_info->left_margin;
+ fbinfo->var.right_margin = mach_info->right_margin;
+ fbinfo->var.upper_margin = mach_info->upper_margin;
+ fbinfo->var.lower_margin = mach_info->lower_margin;
+ fbinfo->var.hsync_len = mach_info->hsync_len;
+ fbinfo->var.vsync_len = mach_info->vsync_len;
+
+ memset(fbinfo->screen_base, 0,
+ mach_info->xres.max *
+ mach_info->yres.max *
+ mach_info->bpp.max / 8);
+
+ glamo_engine_enable(mach_info->glamo, GLAMO_ENGINE_LCD);
+ glamo_engine_reset(mach_info->glamo, GLAMO_ENGINE_LCD);
+
+ 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
+
+#ifdef CONFIG_MFD_GLAMO_FB_XGLAMO_WORKAROUND
+ /* sysfs */
+ rc = sysfs_create_group(&pdev->dev.kobj, &glamo_fb_attr_group);
+ if (rc < 0) {
+ dev_err(&pdev->dev, "cannot create sysfs group\n");
+ goto out_unmap_fb;
+ }
+#endif
+
+ rc = register_framebuffer(fbinfo);
+ if (rc < 0) {
+ dev_err(&pdev->dev, "failed to register framebuffer\n");
+ goto out_unmap_fb;
+ }
+
+ if (mach_info->spi_info) {
+ /* register the sibling spi device */
+ mach_info->spi_info->glamofb_handle = glamofb;
+ glamo_spi_dev.dev.parent = &pdev->dev;
+ glamo_spi_dev.dev.platform_data = mach_info->spi_info;
+ platform_device_register(&glamo_spi_dev);
+ }
+
+ 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, RESSIZE(glamofb->fb_res));
+out_release_reg:
+ release_mem_region(glamofb->reg->start, RESSIZE(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, RESSIZE(glamofb->reg));
+ kfree(glamofb);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int glamofb_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct glamofb_handle *gfb = platform_get_drvdata(pdev);
+
+ /* 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 platform_device *pdev)
+{
+ struct glamofb_handle *gfb = platform_get_drvdata(pdev);
+ struct glamofb_platform_data *mach_info = pdev->dev.platform_data;
+
+ /* OK let's allow framebuffer ops again */
+ /* gfb->fb->screen_base = ioremap(gfb->fb_res->start,
+ RESSIZE(gfb->fb_res)); */
+ glamo_engine_enable(mach_info->glamo, GLAMO_ENGINE_LCD);
+ glamo_engine_reset(mach_info->glamo, GLAMO_ENGINE_LCD);
+
+ printk(KERN_ERR"spin_lock_init\n");
+ spin_lock_init(&gfb->lock_cmd);
+ glamofb_init_regs(gfb);
+#ifdef CONFIG_MFD_GLAMO_HWACCEL
+ glamofb_cursor_onoff(gfb, 1);
+#endif
+
+ fb_set_suspend(gfb->fb, 0);
+
+ return 0;
+}
+#else
+#define glamofb_suspend NULL
+#define glamofb_resume NULL
+#endif
+
+static struct platform_driver glamofb_driver = {
+ .probe = glamofb_probe,
+ .remove = glamofb_remove,
+ .suspend = glamofb_suspend,
+ .resume = glamofb_resume,
+ .driver = {
+ .name = "glamo-fb",
+ .owner = THIS_MODULE,
+ },
+};
+
+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