/*
- * linux/drivers/video/imxfb.c
- *
* Freescale i.MX Frame Buffer device driver
*
* Copyright (C) 2004 Sascha Hauer, Pengutronix
* linux-arm-kernel@lists.arm.linux.org.uk
*/
-//#define DEBUG 1
-
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
+#include <linux/mm.h>
#include <linux/fb.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/cpufreq.h>
-#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/math64.h>
-#include <asm/hardware.h>
-#include <asm/io.h>
-#include <asm/mach-types.h>
-#include <asm/uaccess.h>
-#include <asm/arch/imxfb.h>
+#include <mach/imxfb.h>
+#include <mach/hardware.h>
/*
* Complain if VAR is out of range.
*/
#define DEBUG_VAR 1
-#include "imxfb.h"
+#define DRIVER_NAME "imx-fb"
+
+#define LCDC_SSA 0x00
+
+#define LCDC_SIZE 0x04
+#define SIZE_XMAX(x) ((((x) >> 4) & 0x3f) << 20)
+
+#ifdef CONFIG_ARCH_MX1
+#define SIZE_YMAX(y) ((y) & 0x1ff)
+#else
+#define SIZE_YMAX(y) ((y) & 0x3ff)
+#endif
+
+#define LCDC_VPW 0x08
+#define VPW_VPW(x) ((x) & 0x3ff)
+
+#define LCDC_CPOS 0x0C
+#define CPOS_CC1 (1<<31)
+#define CPOS_CC0 (1<<30)
+#define CPOS_OP (1<<28)
+#define CPOS_CXP(x) (((x) & 3ff) << 16)
+
+#ifdef CONFIG_ARCH_MX1
+#define CPOS_CYP(y) ((y) & 0x1ff)
+#else
+#define CPOS_CYP(y) ((y) & 0x3ff)
+#endif
+
+#define LCDC_LCWHB 0x10
+#define LCWHB_BK_EN (1<<31)
+#define LCWHB_CW(w) (((w) & 0x1f) << 24)
+#define LCWHB_CH(h) (((h) & 0x1f) << 16)
+#define LCWHB_BD(x) ((x) & 0xff)
+
+#define LCDC_LCHCC 0x14
+
+#ifdef CONFIG_ARCH_MX1
+#define LCHCC_CUR_COL_R(r) (((r) & 0x1f) << 11)
+#define LCHCC_CUR_COL_G(g) (((g) & 0x3f) << 5)
+#define LCHCC_CUR_COL_B(b) ((b) & 0x1f)
+#else
+#define LCHCC_CUR_COL_R(r) (((r) & 0x3f) << 12)
+#define LCHCC_CUR_COL_G(g) (((g) & 0x3f) << 6)
+#define LCHCC_CUR_COL_B(b) ((b) & 0x3f)
+#endif
+
+#define LCDC_PCR 0x18
+
+#define LCDC_HCR 0x1C
+#define HCR_H_WIDTH(x) (((x) & 0x3f) << 26)
+#define HCR_H_WAIT_1(x) (((x) & 0xff) << 8)
+#define HCR_H_WAIT_2(x) ((x) & 0xff)
-static struct imxfb_rgb def_rgb_16 = {
- .red = { .offset = 8, .length = 4, },
- .green = { .offset = 4, .length = 4, },
- .blue = { .offset = 0, .length = 4, },
- .transp = { .offset = 0, .length = 0, },
+#define LCDC_VCR 0x20
+#define VCR_V_WIDTH(x) (((x) & 0x3f) << 26)
+#define VCR_V_WAIT_1(x) (((x) & 0xff) << 8)
+#define VCR_V_WAIT_2(x) ((x) & 0xff)
+
+#define LCDC_POS 0x24
+#define POS_POS(x) ((x) & 1f)
+
+#define LCDC_LSCR1 0x28
+/* bit fields in imxfb.h */
+
+#define LCDC_PWMR 0x2C
+/* bit fields in imxfb.h */
+
+#define LCDC_DMACR 0x30
+/* bit fields in imxfb.h */
+
+#define LCDC_RMCR 0x34
+
+#ifdef CONFIG_ARCH_MX1
+#define RMCR_LCDC_EN (1<<1)
+#else
+#define RMCR_LCDC_EN 0
+#endif
+
+#define RMCR_SELF_REF (1<<0)
+
+#define LCDC_LCDICR 0x38
+#define LCDICR_INT_SYN (1<<2)
+#define LCDICR_INT_CON (1)
+
+#define LCDC_LCDISR 0x40
+#define LCDISR_UDR_ERR (1<<3)
+#define LCDISR_ERR_RES (1<<2)
+#define LCDISR_EOF (1<<1)
+#define LCDISR_BOF (1<<0)
+
+/* Used fb-mode. Can be set on kernel command line, therefore file-static. */
+static const char *fb_mode;
+
+
+/*
+ * These are the bitfields for each
+ * display depth that we support.
+ */
+struct imxfb_rgb {
+ struct fb_bitfield red;
+ struct fb_bitfield green;
+ struct fb_bitfield blue;
+ struct fb_bitfield transp;
+};
+
+struct imxfb_info {
+ struct platform_device *pdev;
+ void __iomem *regs;
+ struct clk *clk;
+
+ /*
+ * These are the addresses we mapped
+ * the framebuffer memory region to.
+ */
+ dma_addr_t map_dma;
+ u_char *map_cpu;
+ u_int map_size;
+
+ u_char *screen_cpu;
+ dma_addr_t screen_dma;
+ u_int palette_size;
+
+ dma_addr_t dbar1;
+ dma_addr_t dbar2;
+
+ u_int pcr;
+ u_int pwmr;
+ u_int lscr1;
+ u_int dmacr;
+ u_int cmap_inverse:1,
+ cmap_static:1,
+ unused:30;
+
+ struct imx_fb_videomode *mode;
+ int num_modes;
+
+ void (*lcd_power)(int);
+ void (*backlight_power)(int);
+};
+
+#define IMX_NAME "IMX"
+
+/*
+ * Minimum X and Y resolutions
+ */
+#define MIN_XRES 64
+#define MIN_YRES 64
+
+/* Actually this really is 18bit support, the lowest 2 bits of each colour
+ * are unused in hardware. We claim to have 24bit support to make software
+ * like X work, which does not support 18bit.
+ */
+static struct imxfb_rgb def_rgb_18 = {
+ .red = {.offset = 16, .length = 8,},
+ .green = {.offset = 8, .length = 8,},
+ .blue = {.offset = 0, .length = 8,},
+ .transp = {.offset = 0, .length = 0,},
+};
+
+static struct imxfb_rgb def_rgb_16_tft = {
+ .red = {.offset = 11, .length = 5,},
+ .green = {.offset = 5, .length = 6,},
+ .blue = {.offset = 0, .length = 5,},
+ .transp = {.offset = 0, .length = 0,},
+};
+
+static struct imxfb_rgb def_rgb_16_stn = {
+ .red = {.offset = 8, .length = 4,},
+ .green = {.offset = 4, .length = 4,},
+ .blue = {.offset = 0, .length = 4,},
+ .transp = {.offset = 0, .length = 0,},
};
static struct imxfb_rgb def_rgb_8 = {
- .red = { .offset = 0, .length = 8, },
- .green = { .offset = 0, .length = 8, },
- .blue = { .offset = 0, .length = 8, },
- .transp = { .offset = 0, .length = 0, },
+ .red = {.offset = 0, .length = 8,},
+ .green = {.offset = 0, .length = 8,},
+ .blue = {.offset = 0, .length = 8,},
+ .transp = {.offset = 0, .length = 0,},
};
-static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info);
+static int imxfb_activate_var(struct fb_var_screeninfo *var,
+ struct fb_info *info);
static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
{
return chan << bf->offset;
}
-#define LCDC_PALETTE(x) __REG2(IMX_LCDC_BASE+0x800, (x)<<2)
-static int
-imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
- u_int trans, struct fb_info *info)
+static int imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int trans, struct fb_info *info)
{
struct imxfb_info *fbi = info->par;
u_int val, ret = 1;
(CNVT_TOHW(green,4) << 4) |
CNVT_TOHW(blue, 4);
- LCDC_PALETTE(regno) = val;
+ writel(val, fbi->regs + 0x800 + (regno << 2));
ret = 0;
}
return ret;
}
-static int
-imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+static int imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int trans, struct fb_info *info)
{
struct imxfb_info *fbi = info->par;
return ret;
}
+static const struct imx_fb_videomode *imxfb_find_mode(struct imxfb_info *fbi)
+{
+ struct imx_fb_videomode *m;
+ int i;
+
+ for (i = 0, m = &fbi->mode[0]; i < fbi->num_modes; i++, m++) {
+ if (!strcmp(m->mode.name, fb_mode))
+ return m;
+ }
+ return NULL;
+}
+
/*
* imxfb_check_var():
* Round up in the following order: bits_per_pixel, xres,
* yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale,
* bitfields, horizontal timing, vertical timing.
*/
-static int
-imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct imxfb_info *fbi = info->par;
- int rgbidx;
+ struct imxfb_rgb *rgb;
+ const struct imx_fb_videomode *imxfb_mode;
+ unsigned long lcd_clk;
+ unsigned long long tmp;
+ u32 pcr = 0;
if (var->xres < MIN_XRES)
var->xres = MIN_XRES;
if (var->yres < MIN_YRES)
var->yres = MIN_YRES;
- if (var->xres > fbi->max_xres)
- var->xres = fbi->max_xres;
- if (var->yres > fbi->max_yres)
- var->yres = fbi->max_yres;
- var->xres_virtual = max(var->xres_virtual, var->xres);
- var->yres_virtual = max(var->yres_virtual, var->yres);
+
+ imxfb_mode = imxfb_find_mode(fbi);
+ if (!imxfb_mode)
+ return -EINVAL;
+
+ var->xres = imxfb_mode->mode.xres;
+ var->yres = imxfb_mode->mode.yres;
+ var->bits_per_pixel = imxfb_mode->bpp;
+ var->pixclock = imxfb_mode->mode.pixclock;
+ var->hsync_len = imxfb_mode->mode.hsync_len;
+ var->left_margin = imxfb_mode->mode.left_margin;
+ var->right_margin = imxfb_mode->mode.right_margin;
+ var->vsync_len = imxfb_mode->mode.vsync_len;
+ var->upper_margin = imxfb_mode->mode.upper_margin;
+ var->lower_margin = imxfb_mode->mode.lower_margin;
+ var->sync = imxfb_mode->mode.sync;
+ var->xres_virtual = max(var->xres_virtual, var->xres);
+ var->yres_virtual = max(var->yres_virtual, var->yres);
pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel);
+
+ lcd_clk = clk_get_rate(fbi->clk);
+
+ tmp = var->pixclock * (unsigned long long)lcd_clk;
+
+ do_div(tmp, 1000000);
+
+ if (do_div(tmp, 1000000) > 500000)
+ tmp++;
+
+ pcr = (unsigned int)tmp;
+
+ if (--pcr > 0x3F) {
+ pcr = 0x3F;
+ printk(KERN_WARNING "Must limit pixel clock to %luHz\n",
+ lcd_clk / pcr);
+ }
+
switch (var->bits_per_pixel) {
+ case 32:
+ pcr |= PCR_BPIX_18;
+ rgb = &def_rgb_18;
+ break;
case 16:
- rgbidx = RGB_16;
+ default:
+ if (cpu_is_mx1())
+ pcr |= PCR_BPIX_12;
+ else
+ pcr |= PCR_BPIX_16;
+
+ if (imxfb_mode->pcr & PCR_TFT)
+ rgb = &def_rgb_16_tft;
+ else
+ rgb = &def_rgb_16_stn;
break;
case 8:
- rgbidx = RGB_8;
+ pcr |= PCR_BPIX_8;
+ rgb = &def_rgb_8;
break;
- default:
- rgbidx = RGB_16;
}
+ /* add sync polarities */
+ pcr |= imxfb_mode->pcr & ~(0x3f | (7 << 25));
+
+ fbi->pcr = pcr;
+
/*
* Copy the RGB parameters for this display
* from the machine specific parameters.
*/
- var->red = fbi->rgb[rgbidx]->red;
- var->green = fbi->rgb[rgbidx]->green;
- var->blue = fbi->rgb[rgbidx]->blue;
- var->transp = fbi->rgb[rgbidx]->transp;
+ var->red = rgb->red;
+ var->green = rgb->green;
+ var->blue = rgb->blue;
+ var->transp = rgb->transp;
pr_debug("RGBT length = %d:%d:%d:%d\n",
var->red.length, var->green.length, var->blue.length,
struct imxfb_info *fbi = info->par;
struct fb_var_screeninfo *var = &info->var;
- pr_debug("set_par\n");
-
- if (var->bits_per_pixel == 16)
+ if (var->bits_per_pixel == 16 || var->bits_per_pixel == 32)
info->fix.visual = FB_VISUAL_TRUECOLOR;
else if (!fbi->cmap_static)
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
}
- info->fix.line_length = var->xres_virtual *
- var->bits_per_pixel / 8;
+ info->fix.line_length = var->xres_virtual * var->bits_per_pixel / 8;
fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16;
imxfb_activate_var(var, info);
{
pr_debug("Enabling LCD controller\n");
- /* initialize LCDC */
- LCDC_RMCR &= ~RMCR_LCDC_EN; /* just to be safe... */
-
- LCDC_SSA = fbi->screen_dma;
- /* physical screen start address */
- LCDC_VPW = VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4);
+ writel(fbi->screen_dma, fbi->regs + LCDC_SSA);
- LCDC_POS = 0x00000000; /* panning offset 0 (0 pixel offset) */
+ /* panning offset 0 (0 pixel offset) */
+ writel(0x00000000, fbi->regs + LCDC_POS);
/* disable hardware cursor */
- LCDC_CPOS &= ~(CPOS_CC0 | CPOS_CC1);
+ writel(readl(fbi->regs + LCDC_CPOS) & ~(CPOS_CC0 | CPOS_CC1),
+ fbi->regs + LCDC_CPOS);
- LCDC_RMCR = RMCR_LCDC_EN;
+ writel(RMCR_LCDC_EN, fbi->regs + LCDC_RMCR);
- if(fbi->backlight_power)
+ clk_enable(fbi->clk);
+
+ if (fbi->backlight_power)
fbi->backlight_power(1);
- if(fbi->lcd_power)
+ if (fbi->lcd_power)
fbi->lcd_power(1);
}
{
pr_debug("Disabling LCD controller\n");
- if(fbi->backlight_power)
+ if (fbi->backlight_power)
fbi->backlight_power(0);
- if(fbi->lcd_power)
+ if (fbi->lcd_power)
fbi->lcd_power(0);
- LCDC_RMCR = 0;
+ clk_disable(fbi->clk);
+
+ writel(0, fbi->regs + LCDC_RMCR);
}
static int imxfb_blank(int blank, struct fb_info *info)
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_blank = imxfb_blank,
- .fb_cursor = soft_cursor, /* FIXME: i.MX can do hardware cursor */
};
/*
static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct imxfb_info *fbi = info->par;
+
pr_debug("var: xres=%d hslen=%d lm=%d rm=%d\n",
var->xres, var->hsync_len,
var->left_margin, var->right_margin);
info->fix.id, var->lower_margin);
#endif
- LCDC_HCR = HCR_H_WIDTH(var->hsync_len) |
- HCR_H_WAIT_1(var->left_margin) |
- HCR_H_WAIT_2(var->right_margin);
-
- LCDC_VCR = VCR_V_WIDTH(var->vsync_len) |
- VCR_V_WAIT_1(var->upper_margin) |
- VCR_V_WAIT_2(var->lower_margin);
-
- LCDC_SIZE = SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres);
- LCDC_PCR = fbi->pcr;
- LCDC_PWMR = fbi->pwmr;
- LCDC_LSCR1 = fbi->lscr1;
- LCDC_DMACR = fbi->dmacr;
-
- return 0;
-}
-
-static void imxfb_setup_gpio(struct imxfb_info *fbi)
-{
- int width;
+ /* physical screen start address */
+ writel(VPW_VPW(var->xres * var->bits_per_pixel / 8 / 4),
+ fbi->regs + LCDC_VPW);
- LCDC_RMCR &= ~(RMCR_LCDC_EN | RMCR_SELF_REF);
+ writel(HCR_H_WIDTH(var->hsync_len - 1) |
+ HCR_H_WAIT_1(var->right_margin - 1) |
+ HCR_H_WAIT_2(var->left_margin - 3),
+ fbi->regs + LCDC_HCR);
- if( fbi->pcr & PCR_TFT )
- width = 16;
- else
- width = 1 << ((fbi->pcr >> 28) & 0x3);
+ writel(VCR_V_WIDTH(var->vsync_len) |
+ VCR_V_WAIT_1(var->lower_margin) |
+ VCR_V_WAIT_2(var->upper_margin),
+ fbi->regs + LCDC_VCR);
- switch(width) {
- case 16:
- imx_gpio_mode(PD30_PF_LD15);
- imx_gpio_mode(PD29_PF_LD14);
- imx_gpio_mode(PD28_PF_LD13);
- imx_gpio_mode(PD27_PF_LD12);
- imx_gpio_mode(PD26_PF_LD11);
- imx_gpio_mode(PD25_PF_LD10);
- imx_gpio_mode(PD24_PF_LD9);
- imx_gpio_mode(PD23_PF_LD8);
- case 8:
- imx_gpio_mode(PD22_PF_LD7);
- imx_gpio_mode(PD21_PF_LD6);
- imx_gpio_mode(PD20_PF_LD5);
- imx_gpio_mode(PD19_PF_LD4);
- case 4:
- imx_gpio_mode(PD18_PF_LD3);
- imx_gpio_mode(PD17_PF_LD2);
- case 2:
- imx_gpio_mode(PD16_PF_LD1);
- case 1:
- imx_gpio_mode(PD15_PF_LD0);
- }
+ writel(SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres),
+ fbi->regs + LCDC_SIZE);
- /* initialize GPIOs */
- imx_gpio_mode(PD6_PF_LSCLK);
- imx_gpio_mode(PD10_PF_SPL_SPR);
- imx_gpio_mode(PD11_PF_CONTRAST);
- imx_gpio_mode(PD14_PF_FLM_VSYNC);
- imx_gpio_mode(PD13_PF_LP_HSYNC);
- imx_gpio_mode(PD7_PF_REV);
- imx_gpio_mode(PD8_PF_CLS);
-
-#ifndef CONFIG_MACH_PIMX1
- /* on PiMX1 used as buffers enable signal
- */
- imx_gpio_mode(PD9_PF_PS);
-#endif
-
-#ifndef CONFIG_MACH_MX1FS2
- /* on mx1fs2 this pin is used to (de)activate the display, so we need
- * it as a normal gpio
- */
- imx_gpio_mode(PD12_PF_ACD_OE);
-#endif
+ writel(fbi->pcr, fbi->regs + LCDC_PCR);
+ writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
+ writel(fbi->lscr1, fbi->regs + LCDC_LSCR1);
+ writel(fbi->dmacr, fbi->regs + LCDC_DMACR);
+ return 0;
}
#ifdef CONFIG_PM
* Power management hooks. Note that we won't be called from IRQ context,
* unlike the blank functions above, so we may sleep.
*/
-static int imxfb_suspend(struct device *dev, u32 state, u32 level)
+static int imxfb_suspend(struct platform_device *dev, pm_message_t state)
{
- struct imxfb_info *fbi = dev_get_drvdata(dev);
- pr_debug("%s\n",__FUNCTION__);
+ struct imxfb_info *fbi = platform_get_drvdata(dev);
- if (level == SUSPEND_DISABLE || level == SUSPEND_POWER_DOWN)
- imxfb_disable_controller(fbi);
+ pr_debug("%s\n", __func__);
+
+ imxfb_disable_controller(fbi);
return 0;
}
-static int imxfb_resume(struct device *dev, u32 level)
+static int imxfb_resume(struct platform_device *dev)
{
- struct imxfb_info *fbi = dev_get_drvdata(dev);
- pr_debug("%s\n",__FUNCTION__);
+ struct imxfb_info *fbi = platform_get_drvdata(dev);
- if (level == RESUME_ENABLE)
- imxfb_enable_controller(fbi);
+ pr_debug("%s\n", __func__);
+
+ imxfb_enable_controller(fbi);
return 0;
}
#else
#define imxfb_resume NULL
#endif
-static int __init imxfb_init_fbinfo(struct device *dev)
+static int __init imxfb_init_fbinfo(struct platform_device *pdev)
{
- struct imxfb_mach_info *inf = dev->platform_data;
- struct fb_info *info = dev_get_drvdata(dev);
+ struct imx_fb_platform_data *pdata = pdev->dev.platform_data;
+ struct fb_info *info = dev_get_drvdata(&pdev->dev);
struct imxfb_info *fbi = info->par;
+ struct imx_fb_videomode *m;
+ int i;
- pr_debug("%s\n",__FUNCTION__);
+ pr_debug("%s\n",__func__);
- info->pseudo_palette = kmalloc( sizeof(u32) * 16, GFP_KERNEL);
+ info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
if (!info->pseudo_palette)
return -ENOMEM;
memset(fbi, 0, sizeof(struct imxfb_info));
- fbi->dev = dev;
strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id));
- info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.type_aux = 0;
info->fix.xpanstep = 0;
info->fix.ypanstep = 0;
info->fix.ywrapstep = 0;
- info->fix.accel = FB_ACCEL_NONE;
+ info->fix.accel = FB_ACCEL_NONE;
info->var.nonstd = 0;
info->var.activate = FB_ACTIVATE_NOW;
info->var.height = -1;
info->var.width = -1;
info->var.accel_flags = 0;
- info->var.vmode = FB_VMODE_NONINTERLACED;
+ info->var.vmode = FB_VMODE_NONINTERLACED;
info->fbops = &imxfb_ops;
- info->flags = FBINFO_FLAG_DEFAULT;
- info->pseudo_palette = (fbi + 1);
-
- fbi->rgb[RGB_16] = &def_rgb_16;
- fbi->rgb[RGB_8] = &def_rgb_8;
-
- fbi->max_xres = inf->xres;
- info->var.xres = inf->xres;
- info->var.xres_virtual = inf->xres;
- fbi->max_yres = inf->yres;
- info->var.yres = inf->yres;
- info->var.yres_virtual = inf->yres;
- fbi->max_bpp = inf->bpp;
- info->var.bits_per_pixel = inf->bpp;
- info->var.pixclock = inf->pixclock;
- info->var.hsync_len = inf->hsync_len;
- info->var.left_margin = inf->left_margin;
- info->var.right_margin = inf->right_margin;
- info->var.vsync_len = inf->vsync_len;
- info->var.upper_margin = inf->upper_margin;
- info->var.lower_margin = inf->lower_margin;
- info->var.sync = inf->sync;
- info->var.grayscale = inf->cmap_greyscale;
- fbi->cmap_inverse = inf->cmap_inverse;
- fbi->pcr = inf->pcr;
- fbi->lscr1 = inf->lscr1;
- fbi->dmacr = inf->dmacr;
- fbi->pwmr = inf->pwmr;
- fbi->lcd_power = inf->lcd_power;
- fbi->backlight_power = inf->backlight_power;
- info->fix.smem_len = fbi->max_xres * fbi->max_yres *
- fbi->max_bpp / 8;
+ info->flags = FBINFO_FLAG_DEFAULT |
+ FBINFO_READS_FAST;
+ info->var.grayscale = pdata->cmap_greyscale;
+ fbi->cmap_inverse = pdata->cmap_inverse;
+ fbi->cmap_static = pdata->cmap_static;
+ fbi->lscr1 = pdata->lscr1;
+ fbi->dmacr = pdata->dmacr;
+ fbi->pwmr = pdata->pwmr;
+ fbi->lcd_power = pdata->lcd_power;
+ fbi->backlight_power = pdata->backlight_power;
+
+ for (i = 0, m = &pdata->mode[0]; i < pdata->num_modes; i++, m++)
+ info->fix.smem_len = max_t(size_t, info->fix.smem_len,
+ m->mode.xres * m->mode.yres * m->bpp / 8);
return 0;
}
-/*
- * Allocates the DRAM memory for the frame buffer. This buffer is
- * remapped into a non-cached, non-buffered, memory region to
- * allow pixel writes to occur without flushing the cache.
- * Once this area is remapped, all virtual memory access to the
- * video memory should occur at the new region.
- */
-static int __init imxfb_map_video_memory(struct fb_info *info)
-{
- struct imxfb_info *fbi = info->par;
-
- fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
- fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size,
- &fbi->map_dma,GFP_KERNEL);
-
- if (fbi->map_cpu) {
- info->screen_base = fbi->map_cpu;
- fbi->screen_cpu = fbi->map_cpu;
- fbi->screen_dma = fbi->map_dma;
- info->fix.smem_start = fbi->screen_dma;
- }
-
- return fbi->map_cpu ? 0 : -ENOMEM;
-}
-
-static int __init imxfb_probe(struct device *dev)
+static int __init imxfb_probe(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
struct imxfb_info *fbi;
struct fb_info *info;
- struct imxfb_mach_info *inf;
+ struct imx_fb_platform_data *pdata;
struct resource *res;
- int ret;
+ int ret, i;
- printk("i.MX Framebuffer driver\n");
+ dev_info(&pdev->dev, "i.MX Framebuffer driver\n");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if(!res)
+ if (!res)
return -ENODEV;
- inf = dev->platform_data;
- if(!inf) {
- dev_err(dev,"No platform_data available\n");
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev,"No platform_data available\n");
return -ENOMEM;
}
- info = framebuffer_alloc(sizeof(struct imxfb_info), dev);
- if(!info)
+ info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev);
+ if (!info)
return -ENOMEM;
fbi = info->par;
- dev_set_drvdata(dev, info);
+ if (!fb_mode)
+ fb_mode = pdata->mode[0].mode.name;
+
+ platform_set_drvdata(pdev, info);
- ret = imxfb_init_fbinfo(dev);
- if( ret < 0 )
+ ret = imxfb_init_fbinfo(pdev);
+ if (ret < 0)
goto failed_init;
- res = request_mem_region(res->start, res->end - res->start + 1, "IMXFB");
+ res = request_mem_region(res->start, resource_size(res),
+ DRIVER_NAME);
if (!res) {
ret = -EBUSY;
- goto failed_regs;
+ goto failed_req;
+ }
+
+ fbi->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(fbi->clk)) {
+ ret = PTR_ERR(fbi->clk);
+ dev_err(&pdev->dev, "unable to get clock: %d\n", ret);
+ goto failed_getclock;
+ }
+
+ fbi->regs = ioremap(res->start, resource_size(res));
+ if (fbi->regs == NULL) {
+ dev_err(&pdev->dev, "Cannot map frame buffer registers\n");
+ goto failed_ioremap;
}
- if (!inf->fixed_screen_cpu) {
- ret = imxfb_map_video_memory(info);
- if (ret) {
- dev_err(dev, "Failed to allocate video RAM: %d\n", ret);
+ if (!pdata->fixed_screen_cpu) {
+ fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
+ fbi->map_cpu = dma_alloc_writecombine(&pdev->dev,
+ fbi->map_size, &fbi->map_dma, GFP_KERNEL);
+
+ if (!fbi->map_cpu) {
+ dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret);
ret = -ENOMEM;
goto failed_map;
}
+
+ info->screen_base = fbi->map_cpu;
+ fbi->screen_cpu = fbi->map_cpu;
+ fbi->screen_dma = fbi->map_dma;
+ info->fix.smem_start = fbi->screen_dma;
} else {
/* Fixed framebuffer mapping enables location of the screen in eSRAM */
- fbi->map_cpu = inf->fixed_screen_cpu;
- fbi->map_dma = inf->fixed_screen_dma;
+ fbi->map_cpu = pdata->fixed_screen_cpu;
+ fbi->map_dma = pdata->fixed_screen_dma;
info->screen_base = fbi->map_cpu;
fbi->screen_cpu = fbi->map_cpu;
fbi->screen_dma = fbi->map_dma;
info->fix.smem_start = fbi->screen_dma;
}
+ if (pdata->init) {
+ ret = pdata->init(fbi->pdev);
+ if (ret)
+ goto failed_platform_init;
+ }
+
+ fbi->mode = pdata->mode;
+ fbi->num_modes = pdata->num_modes;
+
+ INIT_LIST_HEAD(&info->modelist);
+ for (i = 0; i < pdata->num_modes; i++)
+ fb_add_videomode(&pdata->mode[i].mode, &info->modelist);
+
/*
* This makes sure that our colour bitfield
* descriptors are correctly initialised.
*/
imxfb_check_var(&info->var, info);
- ret = fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
+ ret = fb_alloc_cmap(&info->cmap, 1 << info->var.bits_per_pixel, 0);
if (ret < 0)
goto failed_cmap;
- imxfb_setup_gpio(fbi);
-
imxfb_set_par(info);
ret = register_framebuffer(info);
if (ret < 0) {
- dev_err(dev, "failed to register framebuffer\n");
+ dev_err(&pdev->dev, "failed to register framebuffer\n");
goto failed_register;
}
failed_register:
fb_dealloc_cmap(&info->cmap);
failed_cmap:
- if (!inf->fixed_screen_cpu)
- dma_free_writecombine(dev,fbi->map_size,fbi->map_cpu,
- fbi->map_dma);
+ if (pdata->exit)
+ pdata->exit(fbi->pdev);
+failed_platform_init:
+ if (!pdata->fixed_screen_cpu)
+ dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu,
+ fbi->map_dma);
failed_map:
+ clk_put(fbi->clk);
+failed_getclock:
+ iounmap(fbi->regs);
+failed_ioremap:
+ release_mem_region(res->start, resource_size(res));
+failed_req:
kfree(info->pseudo_palette);
-failed_regs:
- release_mem_region(res->start, res->end - res->start);
failed_init:
- dev_set_drvdata(dev, NULL);
+ platform_set_drvdata(pdev, NULL);
framebuffer_release(info);
return ret;
}
-static int imxfb_remove(struct device *dev)
+static int __devexit imxfb_remove(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct fb_info *info = dev_get_drvdata(dev);
+ struct imx_fb_platform_data *pdata;
+ struct fb_info *info = platform_get_drvdata(pdev);
struct imxfb_info *fbi = info->par;
struct resource *res;
unregister_framebuffer(info);
+ pdata = pdev->dev.platform_data;
+ if (pdata->exit)
+ pdata->exit(fbi->pdev);
+
fb_dealloc_cmap(&info->cmap);
kfree(info->pseudo_palette);
framebuffer_release(info);
- release_mem_region(res->start, res->end - res->start + 1);
- dev_set_drvdata(dev, NULL);
+ iounmap(fbi->regs);
+ release_mem_region(res->start, resource_size(res));
+ clk_disable(fbi->clk);
+ clk_put(fbi->clk);
+
+ platform_set_drvdata(pdev, NULL);
return 0;
}
-void imxfb_shutdown(struct device * dev)
+void imxfb_shutdown(struct platform_device * dev)
{
- struct fb_info *info = dev_get_drvdata(dev);
+ struct fb_info *info = platform_get_drvdata(dev);
struct imxfb_info *fbi = info->par;
imxfb_disable_controller(fbi);
}
-static struct device_driver imxfb_driver = {
- .name = "imx-fb",
- .bus = &platform_bus_type,
- .probe = imxfb_probe,
+static struct platform_driver imxfb_driver = {
.suspend = imxfb_suspend,
.resume = imxfb_resume,
- .remove = imxfb_remove,
+ .remove = __devexit_p(imxfb_remove),
.shutdown = imxfb_shutdown,
+ .driver = {
+ .name = DRIVER_NAME,
+ },
};
+static int imxfb_setup(void)
+{
+#ifndef MODULE
+ char *opt, *options = NULL;
+
+ if (fb_get_options("imxfb", &options))
+ return -ENODEV;
+
+ if (!options || !*options)
+ return 0;
+
+ while ((opt = strsep(&options, ",")) != NULL) {
+ if (!*opt)
+ continue;
+ else
+ fb_mode = opt;
+ }
+#endif
+ return 0;
+}
+
int __init imxfb_init(void)
{
- return driver_register(&imxfb_driver);
+ int ret = imxfb_setup();
+
+ if (ret < 0)
+ return ret;
+
+ return platform_driver_probe(&imxfb_driver, imxfb_probe);
}
static void __exit imxfb_cleanup(void)
{
- driver_unregister(&imxfb_driver);
+ platform_driver_unregister(&imxfb_driver);
}
module_init(imxfb_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff