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gem5 / arm / linux-arm-legacy / 6ac48d1e3ac788ad1d54895acd83be26cefb4fe9 / . / drivers / video / fsl-diu-fb.c
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/*
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
*
* Freescale DIU Frame Buffer device driver
*
* Authors: Hongjun Chen <hong-jun.chen@freescale.com>
* Paul Widmer <paul.widmer@freescale.com>
* Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
* York Sun <yorksun@freescale.com>
*
* Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/spinlock.h>
#include <sysdev/fsl_soc.h>
#include <linux/fsl-diu-fb.h>
#include "edid.h"
#define FSL_AOI_NUM 6 /* 5 AOIs and one dummy AOI */
/* 1 for plane 0, 2 for plane 1&2 each */
/* HW cursor parameters */
#define MAX_CURS 32
/* INT_STATUS/INT_MASK field descriptions */
#define INT_VSYNC 0x01 /* Vsync interrupt */
#define INT_VSYNC_WB 0x02 /* Vsync interrupt for write back operation */
#define INT_UNDRUN 0x04 /* Under run exception interrupt */
#define INT_PARERR 0x08 /* Display parameters error interrupt */
#define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */
struct diu_addr {
void *vaddr; /* Virtual address */
dma_addr_t paddr; /* Physical address */
__u32 offset;
};
/*
* List of supported video modes
*
* The first entry is the default video mode. The remain entries are in
* order if increasing resolution and frequency. The 320x240-60 mode is
* the initial AOI for the second and third planes.
*/
static struct fb_videomode __devinitdata fsl_diu_mode_db[] = {
{
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 160,
.right_margin = 24,
.upper_margin = 29,
.lower_margin = 3,
.hsync_len = 136,
.vsync_len = 6,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 320,
.yres = 240,
.pixclock = 79440,
.left_margin = 16,
.right_margin = 16,
.upper_margin = 16,
.lower_margin = 5,
.hsync_len = 48,
.vsync_len = 1,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 640,
.yres = 480,
.pixclock = 39722,
.left_margin = 48,
.right_margin = 16,
.upper_margin = 33,
.lower_margin = 10,
.hsync_len = 96,
.vsync_len = 2,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 72,
.xres = 640,
.yres = 480,
.pixclock = 32052,
.left_margin = 128,
.right_margin = 24,
.upper_margin = 28,
.lower_margin = 9,
.hsync_len = 40,
.vsync_len = 3,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 75,
.xres = 640,
.yres = 480,
.pixclock = 31747,
.left_margin = 120,
.right_margin = 16,
.upper_margin = 16,
.lower_margin = 1,
.hsync_len = 64,
.vsync_len = 3,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 90,
.xres = 640,
.yres = 480,
.pixclock = 25057,
.left_margin = 120,
.right_margin = 32,
.upper_margin = 14,
.lower_margin = 25,
.hsync_len = 40,
.vsync_len = 14,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 100,
.xres = 640,
.yres = 480,
.pixclock = 22272,
.left_margin = 48,
.right_margin = 32,
.upper_margin = 17,
.lower_margin = 22,
.hsync_len = 128,
.vsync_len = 12,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 33805,
.left_margin = 96,
.right_margin = 24,
.upper_margin = 10,
.lower_margin = 3,
.hsync_len = 72,
.vsync_len = 7,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 800,
.yres = 600,
.pixclock = 25000,
.left_margin = 88,
.right_margin = 40,
.upper_margin = 23,
.lower_margin = 1,
.hsync_len = 128,
.vsync_len = 4,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 854,
.yres = 480,
.pixclock = 31518,
.left_margin = 104,
.right_margin = 16,
.upper_margin = 13,
.lower_margin = 1,
.hsync_len = 88,
.vsync_len = 3,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 70,
.xres = 1024,
.yres = 768,
.pixclock = 16886,
.left_margin = 3,
.right_margin = 3,
.upper_margin = 2,
.lower_margin = 2,
.hsync_len = 40,
.vsync_len = 18,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 75,
.xres = 1024,
.yres = 768,
.pixclock = 15009,
.left_margin = 3,
.right_margin = 3,
.upper_margin = 2,
.lower_margin = 2,
.hsync_len = 80,
.vsync_len = 32,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 1280,
.yres = 480,
.pixclock = 18939,
.left_margin = 353,
.right_margin = 47,
.upper_margin = 39,
.lower_margin = 4,
.hsync_len = 8,
.vsync_len = 2,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 1280,
.yres = 720,
.pixclock = 13426,
.left_margin = 192,
.right_margin = 64,
.upper_margin = 22,
.lower_margin = 1,
.hsync_len = 136,
.vsync_len = 3,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 1280,
.yres = 1024,
.pixclock = 9375,
.left_margin = 38,
.right_margin = 128,
.upper_margin = 2,
.lower_margin = 7,
.hsync_len = 216,
.vsync_len = 37,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 70,
.xres = 1280,
.yres = 1024,
.pixclock = 9380,
.left_margin = 6,
.right_margin = 6,
.upper_margin = 4,
.lower_margin = 4,
.hsync_len = 60,
.vsync_len = 94,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 75,
.xres = 1280,
.yres = 1024,
.pixclock = 9380,
.left_margin = 6,
.right_margin = 6,
.upper_margin = 4,
.lower_margin = 4,
.hsync_len = 60,
.vsync_len = 15,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
{
.refresh = 60,
.xres = 1920,
.yres = 1080,
.pixclock = 5787,
.left_margin = 328,
.right_margin = 120,
.upper_margin = 34,
.lower_margin = 1,
.hsync_len = 208,
.vsync_len = 3,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
},
};
static char *fb_mode;
static unsigned long default_bpp = 32;
static enum fsl_diu_monitor_port monitor_port;
static char *monitor_string;
#if defined(CONFIG_NOT_COHERENT_CACHE)
static u8 *coherence_data;
static size_t coherence_data_size;
static unsigned int d_cache_line_size;
#endif
static DEFINE_SPINLOCK(diu_lock);
struct fsl_diu_data {
struct fb_info *fsl_diu_info[FSL_AOI_NUM - 1];
/*FSL_AOI_NUM has one dummy AOI */
struct device_attribute dev_attr;
struct diu_ad *dummy_ad;
void *dummy_aoi_virt;
unsigned int irq;
int fb_enabled;
enum fsl_diu_monitor_port monitor_port;
struct diu __iomem *diu_reg;
spinlock_t reg_lock;
struct diu_addr ad;
struct diu_addr gamma;
struct diu_addr pallete;
struct diu_addr cursor;
};
enum mfb_index {
PLANE0 = 0, /* Plane 0, only one AOI that fills the screen */
PLANE1_AOI0, /* Plane 1, first AOI */
PLANE1_AOI1, /* Plane 1, second AOI */
PLANE2_AOI0, /* Plane 2, first AOI */
PLANE2_AOI1, /* Plane 2, second AOI */
};
struct mfb_info {
enum mfb_index index;
char *id;
int registered;
unsigned long pseudo_palette[16];
struct diu_ad *ad;
int cursor_reset;
unsigned char g_alpha;
unsigned int count;
int x_aoi_d; /* aoi display x offset to physical screen */
int y_aoi_d; /* aoi display y offset to physical screen */
struct fsl_diu_data *parent;
u8 *edid_data;
};
static struct mfb_info mfb_template[] = {
{
.index = PLANE0,
.id = "Panel0",
.registered = 0,
.count = 0,
.x_aoi_d = 0,
.y_aoi_d = 0,
},
{
.index = PLANE1_AOI0,
.id = "Panel1 AOI0",
.registered = 0,
.g_alpha = 0xff,
.count = 0,
.x_aoi_d = 0,
.y_aoi_d = 0,
},
{
.index = PLANE1_AOI1,
.id = "Panel1 AOI1",
.registered = 0,
.g_alpha = 0xff,
.count = 0,
.x_aoi_d = 0,
.y_aoi_d = 480,
},
{
.index = PLANE2_AOI0,
.id = "Panel2 AOI0",
.registered = 0,
.g_alpha = 0xff,
.count = 0,
.x_aoi_d = 640,
.y_aoi_d = 0,
},
{
.index = PLANE2_AOI1,
.id = "Panel2 AOI1",
.registered = 0,
.g_alpha = 0xff,
.count = 0,
.x_aoi_d = 640,
.y_aoi_d = 480,
},
};
/**
* fsl_diu_name_to_port - convert a port name to a monitor port enum
*
* Takes the name of a monitor port ("dvi", "lvds", or "dlvds") and returns
* the enum fsl_diu_monitor_port that corresponds to that string.
*
* For compatibility with older versions, a number ("0", "1", or "2") is also
* supported.
*
* If the string is unknown, DVI is assumed.
*
* If the particular port is not supported by the platform, another port
* (platform-specific) is chosen instead.
*/
static enum fsl_diu_monitor_port fsl_diu_name_to_port(const char *s)
{
enum fsl_diu_monitor_port port = FSL_DIU_PORT_DVI;
unsigned long val;
if (s) {
if (!strict_strtoul(s, 10, &val) && (val <= 2))
port = (enum fsl_diu_monitor_port) val;
else if (strncmp(s, "lvds", 4) == 0)
port = FSL_DIU_PORT_LVDS;
else if (strncmp(s, "dlvds", 5) == 0)
port = FSL_DIU_PORT_DLVDS;
}
return diu_ops.valid_monitor_port(port);
}
/**
* fsl_diu_alloc - allocate memory for the DIU
* @size: number of bytes to allocate
* @param: returned physical address of memory
*
* This function allocates a physically-contiguous block of memory.
*/
static void *fsl_diu_alloc(size_t size, phys_addr_t *phys)
{
void *virt;
virt = alloc_pages_exact(size, GFP_DMA | __GFP_ZERO);
if (virt)
*phys = virt_to_phys(virt);
return virt;
}
/**
* fsl_diu_free - release DIU memory
* @virt: pointer returned by fsl_diu_alloc()
* @size: number of bytes allocated by fsl_diu_alloc()
*
* This function releases memory allocated by fsl_diu_alloc().
*/
static void fsl_diu_free(void *virt, size_t size)
{
if (virt && size)
free_pages_exact(virt, size);
}
/*
* Workaround for failed writing desc register of planes.
* Needed with MPC5121 DIU rev 2.0 silicon.
*/
void wr_reg_wa(u32 *reg, u32 val)
{
do {
out_be32(reg, val);
} while (in_be32(reg) != val);
}
static void fsl_diu_enable_panel(struct fb_info *info)
{
struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
struct diu_ad *ad = mfbi->ad;
struct fsl_diu_data *machine_data = mfbi->parent;
struct diu __iomem *hw = machine_data->diu_reg;
switch (mfbi->index) {
case PLANE0:
if (hw->desc[0] != ad->paddr)
wr_reg_wa(&hw->desc[0], ad->paddr);
break;
case PLANE1_AOI0:
cmfbi = machine_data->fsl_diu_info[2]->par;
if (hw->desc[1] != ad->paddr) { /* AOI0 closed */
if (cmfbi->count > 0) /* AOI1 open */
ad->next_ad =
cpu_to_le32(cmfbi->ad->paddr);
else
ad->next_ad = 0;
wr_reg_wa(&hw->desc[1], ad->paddr);
}
break;
case PLANE2_AOI0:
cmfbi = machine_data->fsl_diu_info[4]->par;
if (hw->desc[2] != ad->paddr) { /* AOI0 closed */
if (cmfbi->count > 0) /* AOI1 open */
ad->next_ad =
cpu_to_le32(cmfbi->ad->paddr);
else
ad->next_ad = 0;
wr_reg_wa(&hw->desc[2], ad->paddr);
}
break;
case PLANE1_AOI1:
pmfbi = machine_data->fsl_diu_info[1]->par;
ad->next_ad = 0;
if (hw->desc[1] == machine_data->dummy_ad->paddr)
wr_reg_wa(&hw->desc[1], ad->paddr);
else /* AOI0 open */
pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
break;
case PLANE2_AOI1:
pmfbi = machine_data->fsl_diu_info[3]->par;
ad->next_ad = 0;
if (hw->desc[2] == machine_data->dummy_ad->paddr)
wr_reg_wa(&hw->desc[2], ad->paddr);
else /* AOI0 was open */
pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
break;
}
}
static void fsl_diu_disable_panel(struct fb_info *info)
{
struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
struct diu_ad *ad = mfbi->ad;
struct fsl_diu_data *machine_data = mfbi->parent;
struct diu __iomem *hw = machine_data->diu_reg;
switch (mfbi->index) {
case PLANE0:
if (hw->desc[0] != machine_data->dummy_ad->paddr)
wr_reg_wa(&hw->desc[0], machine_data->dummy_ad->paddr);
break;
case PLANE1_AOI0:
cmfbi = machine_data->fsl_diu_info[2]->par;
if (cmfbi->count > 0) /* AOI1 is open */
wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr);
/* move AOI1 to the first */
else /* AOI1 was closed */
wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
/* close AOI 0 */
break;
case PLANE2_AOI0:
cmfbi = machine_data->fsl_diu_info[4]->par;
if (cmfbi->count > 0) /* AOI1 is open */
wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr);
/* move AOI1 to the first */
else /* AOI1 was closed */
wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
/* close AOI 0 */
break;
case PLANE1_AOI1:
pmfbi = machine_data->fsl_diu_info[1]->par;
if (hw->desc[1] != ad->paddr) {
/* AOI1 is not the first in the chain */
if (pmfbi->count > 0)
/* AOI0 is open, must be the first */
pmfbi->ad->next_ad = 0;
} else /* AOI1 is the first in the chain */
wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
/* close AOI 1 */
break;
case PLANE2_AOI1:
pmfbi = machine_data->fsl_diu_info[3]->par;
if (hw->desc[2] != ad->paddr) {
/* AOI1 is not the first in the chain */
if (pmfbi->count > 0)
/* AOI0 is open, must be the first */
pmfbi->ad->next_ad = 0;
} else /* AOI1 is the first in the chain */
wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
/* close AOI 1 */
break;
}
}
static void enable_lcdc(struct fb_info *info)
{
struct mfb_info *mfbi = info->par;
struct fsl_diu_data *machine_data = mfbi->parent;
struct diu __iomem *hw = machine_data->diu_reg;
if (!machine_data->fb_enabled) {
out_be32(&hw->diu_mode, MFB_MODE1);
machine_data->fb_enabled++;
}
}
static void disable_lcdc(struct fb_info *info)
{
struct mfb_info *mfbi = info->par;
struct fsl_diu_data *machine_data = mfbi->parent;
struct diu __iomem *hw = machine_data->diu_reg;
if (machine_data->fb_enabled) {
out_be32(&hw->diu_mode, 0);
machine_data->fb_enabled = 0;
}
}
static void adjust_aoi_size_position(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par;
struct fsl_diu_data *machine_data = mfbi->parent;
int available_height, upper_aoi_bottom;
enum mfb_index index = mfbi->index;
int lower_aoi_is_open, upper_aoi_is_open;
__u32 base_plane_width, base_plane_height, upper_aoi_height;
base_plane_width = machine_data->fsl_diu_info[0]->var.xres;
base_plane_height = machine_data->fsl_diu_info[0]->var.yres;
if (mfbi->x_aoi_d < 0)
mfbi->x_aoi_d = 0;
if (mfbi->y_aoi_d < 0)
mfbi->y_aoi_d = 0;
switch (index) {
case PLANE0:
if (mfbi->x_aoi_d != 0)
mfbi->x_aoi_d = 0;
if (mfbi->y_aoi_d != 0)
mfbi->y_aoi_d = 0;
break;
case PLANE1_AOI0:
case PLANE2_AOI0:
lower_aoi_mfbi = machine_data->fsl_diu_info[index+1]->par;
lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0;
if (var->xres > base_plane_width)
var->xres = base_plane_width;
if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
mfbi->x_aoi_d = base_plane_width - var->xres;
if (lower_aoi_is_open)
available_height = lower_aoi_mfbi->y_aoi_d;
else
available_height = base_plane_height;
if (var->yres > available_height)
var->yres = available_height;
if ((mfbi->y_aoi_d + var->yres) > available_height)
mfbi->y_aoi_d = available_height - var->yres;
break;
case PLANE1_AOI1:
case PLANE2_AOI1:
upper_aoi_mfbi = machine_data->fsl_diu_info[index-1]->par;
upper_aoi_height =
machine_data->fsl_diu_info[index-1]->var.yres;
upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height;
upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0;
if (var->xres > base_plane_width)
var->xres = base_plane_width;
if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
mfbi->x_aoi_d = base_plane_width - var->xres;
if (mfbi->y_aoi_d < 0)
mfbi->y_aoi_d = 0;
if (upper_aoi_is_open) {
if (mfbi->y_aoi_d < upper_aoi_bottom)
mfbi->y_aoi_d = upper_aoi_bottom;
available_height = base_plane_height
- upper_aoi_bottom;
} else
available_height = base_plane_height;
if (var->yres > available_height)
var->yres = available_height;
if ((mfbi->y_aoi_d + var->yres) > base_plane_height)
mfbi->y_aoi_d = base_plane_height - var->yres;
break;
}
}
/*
* Checks to see if the hardware supports the state requested by var passed
* in. This function does not alter the hardware state! If the var passed in
* is slightly off by what the hardware can support then we alter the var
* PASSED in to what we can do. If the hardware doesn't support mode change
* a -EINVAL will be returned by the upper layers.
*/
static int fsl_diu_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
if (var->xres_virtual < var->xres)
var->xres_virtual = var->xres;
if (var->yres_virtual < var->yres)
var->yres_virtual = var->yres;
if (var->xoffset < 0)
var->xoffset = 0;
if (var->yoffset < 0)
var->yoffset = 0;
if (var->xoffset + info->var.xres > info->var.xres_virtual)
var->xoffset = info->var.xres_virtual - info->var.xres;
if (var->yoffset + info->var.yres > info->var.yres_virtual)
var->yoffset = info->var.yres_virtual - info->var.yres;
if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
(var->bits_per_pixel != 16))
var->bits_per_pixel = default_bpp;
switch (var->bits_per_pixel) {
case 16:
var->red.length = 5;
var->red.offset = 11;
var->red.msb_right = 0;
var->green.length = 6;
var->green.offset = 5;
var->green.msb_right = 0;
var->blue.length = 5;
var->blue.offset = 0;
var->blue.msb_right = 0;
var->transp.length = 0;
var->transp.offset = 0;
var->transp.msb_right = 0;
break;
case 24:
var->red.length = 8;
var->red.offset = 0;
var->red.msb_right = 0;
var->green.length = 8;
var->green.offset = 8;
var->green.msb_right = 0;
var->blue.length = 8;
var->blue.offset = 16;
var->blue.msb_right = 0;
var->transp.length = 0;
var->transp.offset = 0;
var->transp.msb_right = 0;
break;
case 32:
var->red.length = 8;
var->red.offset = 16;
var->red.msb_right = 0;
var->green.length = 8;
var->green.offset = 8;
var->green.msb_right = 0;
var->blue.length = 8;
var->blue.offset = 0;
var->blue.msb_right = 0;
var->transp.length = 8;
var->transp.offset = 24;
var->transp.msb_right = 0;
break;
}
var->height = -1;
var->width = -1;
var->grayscale = 0;
/* Copy nonstd field to/from sync for fbset usage */
var->sync |= var->nonstd;
var->nonstd |= var->sync;
adjust_aoi_size_position(var, info);
return 0;
}
static void set_fix(struct fb_info *info)
{
struct fb_fix_screeninfo *fix = &info->fix;
struct fb_var_screeninfo *var = &info->var;
struct mfb_info *mfbi = info->par;
strncpy(fix->id, mfbi->id, sizeof(fix->id));
fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
fix->type = FB_TYPE_PACKED_PIXELS;
fix->accel = FB_ACCEL_NONE;
fix->visual = FB_VISUAL_TRUECOLOR;
fix->xpanstep = 1;
fix->ypanstep = 1;
}
static void update_lcdc(struct fb_info *info)
{
struct fb_var_screeninfo *var = &info->var;
struct mfb_info *mfbi = info->par;
struct fsl_diu_data *machine_data = mfbi->parent;
struct diu __iomem *hw;
int i, j;
char __iomem *cursor_base, *gamma_table_base;
u32 temp;
hw = machine_data->diu_reg;
diu_ops.set_monitor_port(machine_data->monitor_port);
gamma_table_base = machine_data->gamma.vaddr;
cursor_base = machine_data->cursor.vaddr;
/* Prep for DIU init - gamma table, cursor table */
for (i = 0; i <= 2; i++)
for (j = 0; j <= 255; j++)
*gamma_table_base++ = j;
diu_ops.set_gamma_table(machine_data->monitor_port,
machine_data->gamma.vaddr);
disable_lcdc(info);
/* Program DIU registers */
out_be32(&hw->gamma, machine_data->gamma.paddr);
out_be32(&hw->cursor, machine_data->cursor.paddr);
out_be32(&hw->bgnd, 0x007F7F7F); /* BGND */
out_be32(&hw->bgnd_wb, 0); /* BGND_WB */
out_be32(&hw->disp_size, (var->yres << 16 | var->xres));
/* DISP SIZE */
out_be32(&hw->wb_size, 0); /* WB SIZE */
out_be32(&hw->wb_mem_addr, 0); /* WB MEM ADDR */
/* Horizontal and vertical configuration register */
temp = var->left_margin << 22 | /* BP_H */
var->hsync_len << 11 | /* PW_H */
var->right_margin; /* FP_H */
out_be32(&hw->hsyn_para, temp);
temp = var->upper_margin << 22 | /* BP_V */
var->vsync_len << 11 | /* PW_V */
var->lower_margin; /* FP_V */
out_be32(&hw->vsyn_para, temp);
diu_ops.set_pixel_clock(var->pixclock);
out_be32(&hw->syn_pol, 0); /* SYNC SIGNALS POLARITY */
out_be32(&hw->thresholds, 0x00037800); /* The Thresholds */
out_be32(&hw->int_status, 0); /* INTERRUPT STATUS */
out_be32(&hw->plut, 0x01F5F666);
/* Enable the DIU */
enable_lcdc(info);
}
static int map_video_memory(struct fb_info *info)
{
phys_addr_t phys;
u32 smem_len = info->fix.line_length * info->var.yres_virtual;
info->screen_base = fsl_diu_alloc(smem_len, &phys);
if (info->screen_base == NULL) {
dev_err(info->dev, "unable to allocate fb memory\n");
return -ENOMEM;
}
mutex_lock(&info->mm_lock);
info->fix.smem_start = (unsigned long) phys;
info->fix.smem_len = smem_len;
mutex_unlock(&info->mm_lock);
info->screen_size = info->fix.smem_len;
return 0;
}
static void unmap_video_memory(struct fb_info *info)
{
fsl_diu_free(info->screen_base, info->fix.smem_len);
mutex_lock(&info->mm_lock);
info->screen_base = NULL;
info->fix.smem_start = 0;
info->fix.smem_len = 0;
mutex_unlock(&info->mm_lock);
}
/*
* Using the fb_var_screeninfo in fb_info we set the aoi of this
* particular framebuffer. It is a light version of fsl_diu_set_par.
*/
static int fsl_diu_set_aoi(struct fb_info *info)
{
struct fb_var_screeninfo *var = &info->var;
struct mfb_info *mfbi = info->par;
struct diu_ad *ad = mfbi->ad;
/* AOI should not be greater than display size */
ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
return 0;
}
/*
* Using the fb_var_screeninfo in fb_info we set the resolution of this
* particular framebuffer. This function alters the fb_fix_screeninfo stored
* in fb_info. It does not alter var in fb_info since we are using that
* data. This means we depend on the data in var inside fb_info to be
* supported by the hardware. fsl_diu_check_var is always called before
* fsl_diu_set_par to ensure this.
*/
static int fsl_diu_set_par(struct fb_info *info)
{
unsigned long len;
struct fb_var_screeninfo *var = &info->var;
struct mfb_info *mfbi = info->par;
struct fsl_diu_data *machine_data = mfbi->parent;
struct diu_ad *ad = mfbi->ad;
struct diu __iomem *hw;
hw = machine_data->diu_reg;
set_fix(info);
mfbi->cursor_reset = 1;
len = info->var.yres_virtual * info->fix.line_length;
/* Alloc & dealloc each time resolution/bpp change */
if (len != info->fix.smem_len) {
if (info->fix.smem_start)
unmap_video_memory(info);
/* Memory allocation for framebuffer */
if (map_video_memory(info)) {
dev_err(info->dev, "unable to allocate fb memory 1\n");
return -ENOMEM;
}
}
ad->pix_fmt = diu_ops.get_pixel_format(machine_data->monitor_port,
var->bits_per_pixel);
ad->addr = cpu_to_le32(info->fix.smem_start);
ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) |
var->xres_virtual) | mfbi->g_alpha;
/* AOI should not be greater than display size */
ad->aoi_size = cpu_to_le32((var->yres << 16) | var->xres);
ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
/* Disable chroma keying function */
ad->ckmax_r = 0;
ad->ckmax_g = 0;
ad->ckmax_b = 0;
ad->ckmin_r = 255;
ad->ckmin_g = 255;
ad->ckmin_b = 255;
if (mfbi->index == PLANE0)
update_lcdc(info);
return 0;
}
static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
{
return ((val << width) + 0x7FFF - val) >> 16;
}
/*
* Set a single color register. The values supplied have a 16 bit magnitude
* which needs to be scaled in this function for the hardware. Things to take
* into consideration are how many color registers, if any, are supported with
* the current color visual. With truecolor mode no color palettes are
* supported. Here a pseudo palette is created which we store the value in
* pseudo_palette in struct fb_info. For pseudocolor mode we have a limited
* color palette.
*/
static int fsl_diu_setcolreg(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
unsigned int transp, struct fb_info *info)
{
int ret = 1;
/*
* If greyscale is true, then we convert the RGB value
* to greyscale no matter what visual we are using.
*/
if (info->var.grayscale)
red = green = blue = (19595 * red + 38470 * green +
7471 * blue) >> 16;
switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
/*
* 16-bit True Colour. We encode the RGB value
* according to the RGB bitfield information.
*/
if (regno < 16) {
u32 *pal = info->pseudo_palette;
u32 v;
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
v = (red << info->var.red.offset) |
(green << info->var.green.offset) |
(blue << info->var.blue.offset) |
(transp << info->var.transp.offset);
pal[regno] = v;
ret = 0;
}
break;
}
return ret;
}
/*
* Pan (or wrap, depending on the `vmode' field) the display using the
* 'xoffset' and 'yoffset' fields of the 'var' structure. If the values
* don't fit, return -EINVAL.
*/
static int fsl_diu_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
if ((info->var.xoffset == var->xoffset) &&
(info->var.yoffset == var->yoffset))
return 0; /* No change, do nothing */
if (var->xoffset < 0 || var->yoffset < 0
|| var->xoffset + info->var.xres > info->var.xres_virtual
|| var->yoffset + info->var.yres > info->var.yres_virtual)
return -EINVAL;
info->var.xoffset = var->xoffset;
info->var.yoffset = var->yoffset;
if (var->vmode & FB_VMODE_YWRAP)
info->var.vmode |= FB_VMODE_YWRAP;
else
info->var.vmode &= ~FB_VMODE_YWRAP;
fsl_diu_set_aoi(info);
return 0;
}
static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
struct mfb_info *mfbi = info->par;
struct diu_ad *ad = mfbi->ad;
struct mfb_chroma_key ck;
unsigned char global_alpha;
struct aoi_display_offset aoi_d;
__u32 pix_fmt;
void __user *buf = (void __user *)arg;
if (!arg)
return -EINVAL;
switch (cmd) {
case MFB_SET_PIXFMT_OLD:
dev_warn(info->dev,
"MFB_SET_PIXFMT value of 0x%08x is deprecated.\n",
MFB_SET_PIXFMT_OLD);
case MFB_SET_PIXFMT:
if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt)))
return -EFAULT;
ad->pix_fmt = pix_fmt;
break;
case MFB_GET_PIXFMT_OLD:
dev_warn(info->dev,
"MFB_GET_PIXFMT value of 0x%08x is deprecated.\n",
MFB_GET_PIXFMT_OLD);
case MFB_GET_PIXFMT:
pix_fmt = ad->pix_fmt;
if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt)))
return -EFAULT;
break;
case MFB_SET_AOID:
if (copy_from_user(&aoi_d, buf, sizeof(aoi_d)))
return -EFAULT;
mfbi->x_aoi_d = aoi_d.x_aoi_d;
mfbi->y_aoi_d = aoi_d.y_aoi_d;
fsl_diu_check_var(&info->var, info);
fsl_diu_set_aoi(info);
break;
case MFB_GET_AOID:
aoi_d.x_aoi_d = mfbi->x_aoi_d;
aoi_d.y_aoi_d = mfbi->y_aoi_d;
if (copy_to_user(buf, &aoi_d, sizeof(aoi_d)))
return -EFAULT;
break;
case MFB_GET_ALPHA:
global_alpha = mfbi->g_alpha;
if (copy_to_user(buf, &global_alpha, sizeof(global_alpha)))
return -EFAULT;
break;
case MFB_SET_ALPHA:
/* set panel information */
if (copy_from_user(&global_alpha, buf, sizeof(global_alpha)))
return -EFAULT;
ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) |
(global_alpha & 0xff);
mfbi->g_alpha = global_alpha;
break;
case MFB_SET_CHROMA_KEY:
/* set panel winformation */
if (copy_from_user(&ck, buf, sizeof(ck)))
return -EFAULT;
if (ck.enable &&
(ck.red_max < ck.red_min ||
ck.green_max < ck.green_min ||
ck.blue_max < ck.blue_min))
return -EINVAL;
if (!ck.enable) {
ad->ckmax_r = 0;
ad->ckmax_g = 0;
ad->ckmax_b = 0;
ad->ckmin_r = 255;
ad->ckmin_g = 255;
ad->ckmin_b = 255;
} else {
ad->ckmax_r = ck.red_max;
ad->ckmax_g = ck.green_max;
ad->ckmax_b = ck.blue_max;
ad->ckmin_r = ck.red_min;
ad->ckmin_g = ck.green_min;
ad->ckmin_b = ck.blue_min;
}
break;
default:
dev_err(info->dev, "unknown ioctl command (0x%08X)\n", cmd);
return -ENOIOCTLCMD;
}
return 0;
}
/* turn on fb if count == 1
*/
static int fsl_diu_open(struct fb_info *info, int user)
{
struct mfb_info *mfbi = info->par;
int res = 0;
/* free boot splash memory on first /dev/fb0 open */
if ((mfbi->index == PLANE0) && diu_ops.release_bootmem)
diu_ops.release_bootmem();
spin_lock(&diu_lock);
mfbi->count++;
if (mfbi->count == 1) {
fsl_diu_check_var(&info->var, info);
res = fsl_diu_set_par(info);
if (res < 0)
mfbi->count--;
else
fsl_diu_enable_panel(info);
}
spin_unlock(&diu_lock);
return res;
}
/* turn off fb if count == 0
*/
static int fsl_diu_release(struct fb_info *info, int user)
{
struct mfb_info *mfbi = info->par;
int res = 0;
spin_lock(&diu_lock);
mfbi->count--;
if (mfbi->count == 0)
fsl_diu_disable_panel(info);
spin_unlock(&diu_lock);
return res;
}
static struct fb_ops fsl_diu_ops = {
.owner = THIS_MODULE,
.fb_check_var = fsl_diu_check_var,
.fb_set_par = fsl_diu_set_par,
.fb_setcolreg = fsl_diu_setcolreg,
.fb_pan_display = fsl_diu_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_ioctl = fsl_diu_ioctl,
.fb_open = fsl_diu_open,
.fb_release = fsl_diu_release,
};
static int init_fbinfo(struct fb_info *info)
{
struct mfb_info *mfbi = info->par;
info->device = NULL;
info->var.activate = FB_ACTIVATE_NOW;
info->fbops = &fsl_diu_ops;
info->flags = FBINFO_FLAG_DEFAULT;
info->pseudo_palette = &mfbi->pseudo_palette;
/* Allocate colormap */
fb_alloc_cmap(&info->cmap, 16, 0);
return 0;
}
static int __devinit install_fb(struct fb_info *info)
{
int rc;
struct mfb_info *mfbi = info->par;
const char *aoi_mode, *init_aoi_mode = "320x240";
struct fb_videomode *db = fsl_diu_mode_db;
unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db);
int has_default_mode = 1;
if (init_fbinfo(info))
return -EINVAL;
if (mfbi->index == PLANE0) {
if (mfbi->edid_data) {
/* Now build modedb from EDID */
fb_edid_to_monspecs(mfbi->edid_data, &info->monspecs);
fb_videomode_to_modelist(info->monspecs.modedb,
info->monspecs.modedb_len,
&info->modelist);
db = info->monspecs.modedb;
dbsize = info->monspecs.modedb_len;
}
aoi_mode = fb_mode;
} else {
aoi_mode = init_aoi_mode;
}
rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize, NULL,
default_bpp);
if (!rc) {
/*
* For plane 0 we continue and look into
* driver's internal modedb.
*/
if ((mfbi->index == PLANE0) && mfbi->edid_data)
has_default_mode = 0;
else
return -EINVAL;
}
if (!has_default_mode) {
rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
ARRAY_SIZE(fsl_diu_mode_db), NULL, default_bpp);
if (rc)
has_default_mode = 1;
}
/* Still not found, use preferred mode from database if any */
if (!has_default_mode && info->monspecs.modedb) {
struct fb_monspecs *specs = &info->monspecs;
struct fb_videomode *modedb = &specs->modedb[0];
/*
* Get preferred timing. If not found,
* first mode in database will be used.
*/
if (specs->misc & FB_MISC_1ST_DETAIL) {
int i;
for (i = 0; i < specs->modedb_len; i++) {
if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
modedb = &specs->modedb[i];
break;
}
}
}
info->var.bits_per_pixel = default_bpp;
fb_videomode_to_var(&info->var, modedb);
}
if (fsl_diu_check_var(&info->var, info)) {
dev_err(info->dev, "fsl_diu_check_var failed\n");
unmap_video_memory(info);
fb_dealloc_cmap(&info->cmap);
return -EINVAL;
}
if (register_framebuffer(info) < 0) {
dev_err(info->dev, "register_framebuffer failed\n");
unmap_video_memory(info);
fb_dealloc_cmap(&info->cmap);
return -EINVAL;
}
mfbi->registered = 1;
dev_info(info->dev, "%s registered successfully\n", mfbi->id);
return 0;
}
static void uninstall_fb(struct fb_info *info)
{
struct mfb_info *mfbi = info->par;
if (!mfbi->registered)
return;
if (mfbi->index == PLANE0)
kfree(mfbi->edid_data);
unregister_framebuffer(info);
unmap_video_memory(info);
if (&info->cmap)
fb_dealloc_cmap(&info->cmap);
mfbi->registered = 0;
}
static irqreturn_t fsl_diu_isr(int irq, void *dev_id)
{
struct diu __iomem *hw = dev_id;
unsigned int status = in_be32(&hw->int_status);
if (status) {
/* This is the workaround for underrun */
if (status & INT_UNDRUN) {
out_be32(&hw->diu_mode, 0);
udelay(1);
out_be32(&hw->diu_mode, 1);
}
#if defined(CONFIG_NOT_COHERENT_CACHE)
else if (status & INT_VSYNC) {
unsigned int i;
for (i = 0; i < coherence_data_size;
i += d_cache_line_size)
__asm__ __volatile__ (
"dcbz 0, %[input]"
::[input]"r"(&coherence_data[i]));
}
#endif
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static int request_irq_local(struct fsl_diu_data *machine_data)
{
struct diu __iomem *hw = machine_data->diu_reg;
u32 ints;
int ret;
/* Read to clear the status */
in_be32(&hw->int_status);
ret = request_irq(machine_data->irq, fsl_diu_isr, 0, "fsl-diu-fb", hw);
if (!ret) {
ints = INT_PARERR | INT_LS_BF_VS;
#if !defined(CONFIG_NOT_COHERENT_CACHE)
ints |= INT_VSYNC;
#endif
/* Read to clear the status */
in_be32(&hw->int_status);
out_be32(&hw->int_mask, ints);
}
return ret;
}
static void free_irq_local(struct fsl_diu_data *machine_data)
{
struct diu __iomem *hw = machine_data->diu_reg;
/* Disable all LCDC interrupt */
out_be32(&hw->int_mask, 0x1f);
free_irq(machine_data->irq, NULL);
}
#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 fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state)
{
struct fsl_diu_data *machine_data;
machine_data = dev_get_drvdata(&ofdev->dev);
disable_lcdc(machine_data->fsl_diu_info[0]);
return 0;
}
static int fsl_diu_resume(struct platform_device *ofdev)
{
struct fsl_diu_data *machine_data;
machine_data = dev_get_drvdata(&ofdev->dev);
enable_lcdc(machine_data->fsl_diu_info[0]);
return 0;
}
#else
#define fsl_diu_suspend NULL
#define fsl_diu_resume NULL
#endif /* CONFIG_PM */
/* Align to 64-bit(8-byte), 32-byte, etc. */
static int allocate_buf(struct device *dev, struct diu_addr *buf, u32 size,
u32 bytes_align)
{
u32 offset;
dma_addr_t mask;
buf->vaddr =
dma_alloc_coherent(dev, size + bytes_align, &buf->paddr,
GFP_DMA | __GFP_ZERO);
if (!buf->vaddr)
return -ENOMEM;
mask = bytes_align - 1;
offset = buf->paddr & mask;
if (offset) {
buf->offset = bytes_align - offset;
buf->paddr = buf->paddr + offset;
} else
buf->offset = 0;
return 0;
}
static void free_buf(struct device *dev, struct diu_addr *buf, u32 size,
u32 bytes_align)
{
dma_free_coherent(dev, size + bytes_align, buf->vaddr,
buf->paddr - buf->offset);
}
static ssize_t store_monitor(struct device *device,
struct device_attribute *attr, const char *buf, size_t count)
{
enum fsl_diu_monitor_port old_monitor_port;
struct fsl_diu_data *machine_data =
container_of(attr, struct fsl_diu_data, dev_attr);
old_monitor_port = machine_data->monitor_port;
machine_data->monitor_port = fsl_diu_name_to_port(buf);
if (old_monitor_port != machine_data->monitor_port) {
/* All AOIs need adjust pixel format
* fsl_diu_set_par only change the pixsel format here
* unlikely to fail. */
fsl_diu_set_par(machine_data->fsl_diu_info[0]);
fsl_diu_set_par(machine_data->fsl_diu_info[1]);
fsl_diu_set_par(machine_data->fsl_diu_info[2]);
fsl_diu_set_par(machine_data->fsl_diu_info[3]);
fsl_diu_set_par(machine_data->fsl_diu_info[4]);
}
return count;
}
static ssize_t show_monitor(struct device *device,
struct device_attribute *attr, char *buf)
{
struct fsl_diu_data *machine_data =
container_of(attr, struct fsl_diu_data, dev_attr);
switch (machine_data->monitor_port) {
case FSL_DIU_PORT_DVI:
return sprintf(buf, "DVI\n");
case FSL_DIU_PORT_LVDS:
return sprintf(buf, "Single-link LVDS\n");
case FSL_DIU_PORT_DLVDS:
return sprintf(buf, "Dual-link LVDS\n");
}
return 0;
}
static int __devinit fsl_diu_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct mfb_info *mfbi;
phys_addr_t dummy_ad_addr = 0;
int ret, i, error = 0;
struct fsl_diu_data *machine_data;
int diu_mode;
machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
if (!machine_data)
return -ENOMEM;
spin_lock_init(&machine_data->reg_lock);
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
machine_data->fsl_diu_info[i] =
framebuffer_alloc(sizeof(struct mfb_info), &pdev->dev);
if (!machine_data->fsl_diu_info[i]) {
dev_err(&pdev->dev, "cannot allocate memory\n");
ret = -ENOMEM;
goto error2;
}
mfbi = machine_data->fsl_diu_info[i]->par;
memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info));
mfbi->parent = machine_data;
if (mfbi->index == PLANE0) {
const u8 *prop;
int len;
/* Get EDID */
prop = of_get_property(np, "edid", &len);
if (prop && len == EDID_LENGTH)
mfbi->edid_data = kmemdup(prop, EDID_LENGTH,
GFP_KERNEL);
}
}
machine_data->diu_reg = of_iomap(np, 0);
if (!machine_data->diu_reg) {
dev_err(&pdev->dev, "cannot map DIU registers\n");
ret = -EFAULT;
goto error2;
}
diu_mode = in_be32(&machine_data->diu_reg->diu_mode);
if (diu_mode == MFB_MODE0)
out_be32(&machine_data->diu_reg->diu_mode, 0); /* disable DIU */
/* Get the IRQ of the DIU */
machine_data->irq = irq_of_parse_and_map(np, 0);
if (!machine_data->irq) {
dev_err(&pdev->dev, "could not get DIU IRQ\n");
ret = -EINVAL;
goto error;
}
machine_data->monitor_port = monitor_port;
/* Area descriptor memory pool aligns to 64-bit boundary */
if (allocate_buf(&pdev->dev, &machine_data->ad,
sizeof(struct diu_ad) * FSL_AOI_NUM, 8))
return -ENOMEM;
/* Get memory for Gamma Table - 32-byte aligned memory */
if (allocate_buf(&pdev->dev, &machine_data->gamma, 768, 32)) {
ret = -ENOMEM;
goto error;
}
/* For performance, cursor bitmap buffer aligns to 32-byte boundary */
if (allocate_buf(&pdev->dev, &machine_data->cursor,
MAX_CURS * MAX_CURS * 2, 32)) {
ret = -ENOMEM;
goto error;
}
i = ARRAY_SIZE(machine_data->fsl_diu_info);
machine_data->dummy_ad = (struct diu_ad *)((u32)machine_data->ad.vaddr +
machine_data->ad.offset) + i;
machine_data->dummy_ad->paddr = machine_data->ad.paddr +
i * sizeof(struct diu_ad);
machine_data->dummy_aoi_virt = fsl_diu_alloc(64, &dummy_ad_addr);
if (!machine_data->dummy_aoi_virt) {
ret = -ENOMEM;
goto error;
}
machine_data->dummy_ad->addr = cpu_to_le32(dummy_ad_addr);
machine_data->dummy_ad->pix_fmt = 0x88882317;
machine_data->dummy_ad->src_size_g_alpha = cpu_to_le32((4 << 12) | 4);
machine_data->dummy_ad->aoi_size = cpu_to_le32((4 << 16) | 2);
machine_data->dummy_ad->offset_xyi = 0;
machine_data->dummy_ad->offset_xyd = 0;
machine_data->dummy_ad->next_ad = 0;
/*
* Let DIU display splash screen if it was pre-initialized
* by the bootloader, set dummy area descriptor otherwise.
*/
if (diu_mode == MFB_MODE0)
out_be32(&machine_data->diu_reg->desc[0],
machine_data->dummy_ad->paddr);
out_be32(&machine_data->diu_reg->desc[1], machine_data->dummy_ad->paddr);
out_be32(&machine_data->diu_reg->desc[2], machine_data->dummy_ad->paddr);
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
machine_data->fsl_diu_info[i]->fix.smem_start = 0;
mfbi = machine_data->fsl_diu_info[i]->par;
mfbi->ad = (struct diu_ad *)((u32)machine_data->ad.vaddr
+ machine_data->ad.offset) + i;
mfbi->ad->paddr =
machine_data->ad.paddr + i * sizeof(struct diu_ad);
ret = install_fb(machine_data->fsl_diu_info[i]);
if (ret) {
dev_err(&pdev->dev, "could not register fb %d\n", i);
goto error;
}
}
if (request_irq_local(machine_data)) {
dev_err(&pdev->dev, "could not claim irq\n");
goto error;
}
sysfs_attr_init(&machine_data->dev_attr.attr);
machine_data->dev_attr.attr.name = "monitor";
machine_data->dev_attr.attr.mode = S_IRUGO|S_IWUSR;
machine_data->dev_attr.show = show_monitor;
machine_data->dev_attr.store = store_monitor;
error = device_create_file(machine_data->fsl_diu_info[0]->dev,
&machine_data->dev_attr);
if (error) {
dev_err(&pdev->dev, "could not create sysfs file %s\n",
machine_data->dev_attr.attr.name);
}
dev_set_drvdata(&pdev->dev, machine_data);
return 0;
error:
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
uninstall_fb(machine_data->fsl_diu_info[i]);
if (machine_data->ad.vaddr)
free_buf(&pdev->dev, &machine_data->ad,
sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
if (machine_data->gamma.vaddr)
free_buf(&pdev->dev, &machine_data->gamma, 768, 32);
if (machine_data->cursor.vaddr)
free_buf(&pdev->dev, &machine_data->cursor,
MAX_CURS * MAX_CURS * 2, 32);
if (machine_data->dummy_aoi_virt)
fsl_diu_free(machine_data->dummy_aoi_virt, 64);
iounmap(machine_data->diu_reg);
error2:
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
if (machine_data->fsl_diu_info[i])
framebuffer_release(machine_data->fsl_diu_info[i]);
kfree(machine_data);
return ret;
}
static int fsl_diu_remove(struct platform_device *pdev)
{
struct fsl_diu_data *machine_data;
int i;
machine_data = dev_get_drvdata(&pdev->dev);
disable_lcdc(machine_data->fsl_diu_info[0]);
free_irq_local(machine_data);
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
uninstall_fb(machine_data->fsl_diu_info[i]);
if (machine_data->ad.vaddr)
free_buf(&pdev->dev, &machine_data->ad,
sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
if (machine_data->gamma.vaddr)
free_buf(&pdev->dev, &machine_data->gamma, 768, 32);
if (machine_data->cursor.vaddr)
free_buf(&pdev->dev, &machine_data->cursor,
MAX_CURS * MAX_CURS * 2, 32);
if (machine_data->dummy_aoi_virt)
fsl_diu_free(machine_data->dummy_aoi_virt, 64);
iounmap(machine_data->diu_reg);
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
if (machine_data->fsl_diu_info[i])
framebuffer_release(machine_data->fsl_diu_info[i]);
kfree(machine_data);
return 0;
}
#ifndef MODULE
static int __init fsl_diu_setup(char *options)
{
char *opt;
unsigned long val;
if (!options || !*options)
return 0;
while ((opt = strsep(&options, ",")) != NULL) {
if (!*opt)
continue;
if (!strncmp(opt, "monitor=", 8)) {
monitor_port = fsl_diu_name_to_port(opt + 8);
} else if (!strncmp(opt, "bpp=", 4)) {
if (!strict_strtoul(opt + 4, 10, &val))
default_bpp = val;
} else
fb_mode = opt;
}
return 0;
}
#endif
static struct of_device_id fsl_diu_match[] = {
#ifdef CONFIG_PPC_MPC512x
{
.compatible = "fsl,mpc5121-diu",
},
#endif
{
.compatible = "fsl,diu",
},
{}
};
MODULE_DEVICE_TABLE(of, fsl_diu_match);
static struct platform_driver fsl_diu_driver = {
.driver = {
.name = "fsl-diu-fb",
.owner = THIS_MODULE,
.of_match_table = fsl_diu_match,
},
.probe = fsl_diu_probe,
.remove = fsl_diu_remove,
.suspend = fsl_diu_suspend,
.resume = fsl_diu_resume,
};
static int __init fsl_diu_init(void)
{
#ifdef CONFIG_NOT_COHERENT_CACHE
struct device_node *np;
const u32 *prop;
#endif
int ret;
#ifndef MODULE
char *option;
/*
* For kernel boot options (in 'video=xxxfb:<options>' format)
*/
if (fb_get_options("fslfb", &option))
return -ENODEV;
fsl_diu_setup(option);
#else
monitor_port = fsl_diu_name_to_port(monitor_string);
#endif
pr_info("Freescale Display Interface Unit (DIU) framebuffer driver\n");
#ifdef CONFIG_NOT_COHERENT_CACHE
np = of_find_node_by_type(NULL, "cpu");
if (!np) {
pr_err("fsl-diu-fb: can't find 'cpu' device node\n");
return -ENODEV;
}
prop = of_get_property(np, "d-cache-size", NULL);
if (prop == NULL) {
pr_err("fsl-diu-fb: missing 'd-cache-size' property' "
"in 'cpu' node\n");
of_node_put(np);
return -ENODEV;
}
/*
* Freescale PLRU requires 13/8 times the cache size to do a proper
* displacement flush
*/
coherence_data_size = be32_to_cpup(prop) * 13;
coherence_data_size /= 8;
prop = of_get_property(np, "d-cache-line-size", NULL);
if (prop == NULL) {
pr_err("fsl-diu-fb: missing 'd-cache-line-size' property' "
"in 'cpu' node\n");
of_node_put(np);
return -ENODEV;
}
d_cache_line_size = be32_to_cpup(prop);
of_node_put(np);
coherence_data = vmalloc(coherence_data_size);
if (!coherence_data)
return -ENOMEM;
#endif
ret = platform_driver_register(&fsl_diu_driver);
if (ret) {
pr_err("fsl-diu-fb: failed to register platform driver\n");
#if defined(CONFIG_NOT_COHERENT_CACHE)
vfree(coherence_data);
#endif
}
return ret;
}
static void __exit fsl_diu_exit(void)
{
platform_driver_unregister(&fsl_diu_driver);
#if defined(CONFIG_NOT_COHERENT_CACHE)
vfree(coherence_data);
#endif
}
module_init(fsl_diu_init);
module_exit(fsl_diu_exit);
MODULE_AUTHOR("York Sun <yorksun@freescale.com>");
MODULE_DESCRIPTION("Freescale DIU framebuffer driver");
MODULE_LICENSE("GPL");
module_param_named(mode, fb_mode, charp, 0);
MODULE_PARM_DESC(mode,
"Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
module_param_named(bpp, default_bpp, ulong, 0);
MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified in 'mode'");
module_param_named(monitor, monitor_string, charp, 0);
MODULE_PARM_DESC(monitor, "Specify the monitor port "
"(\"dvi\", \"lvds\", or \"dlvds\") if supported by the platform");