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/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Marcus Lorentzon <marcus.xm.lorentzon@stericsson.com>
* for ST-Ericsson.
*
* License terms: GNU General Public License (GPL), version 2.
*/
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <asm/mach-types.h>
#include <video/mcde_display.h>
#include <video/mcde_display-generic_dsi.h>
#include <video/mcde_fb.h>
#include <video/mcde_dss.h>
#define DSI_UNIT_INTERVAL_0 0xA
#define PRIMARY_DISPLAY_ID 0
#ifdef CONFIG_FB_MCDE
static struct fb_info *fbs[2] = { NULL, NULL };
static struct mcde_display_device *displays[2] = { NULL, NULL };
static int display_initialized_during_boot;
static int __init startup_graphics_setup(char *str)
{
if (get_option(&str, &display_initialized_during_boot) != 1)
display_initialized_during_boot = 0;
switch (display_initialized_during_boot) {
case 1:
pr_info("Startup graphics support\n");
break;
case 0:
default:
pr_info("No startup graphics supported\n");
break;
};
return 1;
}
__setup("startup_graphics=", startup_graphics_setup);
#ifdef CONFIG_DISPLAY_GENERIC_DSI_PRIMARY
static struct mcde_port port0 = {
.type = MCDE_PORTTYPE_DSI,
.mode = MCDE_PORTMODE_CMD,
.pixel_format = MCDE_PORTPIXFMT_DSI_24BPP,
.ifc = DSI_VIDEO_MODE,
.link = 0,
#ifdef CONFIG_DISPLAY_GENERIC_DSI_PRIMARY_AUTO_SYNC
.sync_src = MCDE_SYNCSRC_OFF,
.update_auto_trig = true,
#else
.sync_src = MCDE_SYNCSRC_BTA,
.update_auto_trig = false,
#endif
.phy = {
.dsi = {
.virt_id = 0,
.num_data_lanes = 2,
.ui = DSI_UNIT_INTERVAL_0,
.clk_cont = false,
.data_lanes_swap = false,
},
},
};
struct mcde_display_generic_platform_data u5500_generic_display0_pdata = {
.reset_gpio = 226,
.reset_delay = 10,
.sleep_out_delay = 140,
#ifdef CONFIG_REGULATOR
.regulator_id = "ldo-h",
.min_supply_voltage = 2500000, /* 2.5V */
.max_supply_voltage = 2700000 /* 2.7V */
#endif
};
struct mcde_display_device u5500_generic_display0 = {
.name = "mcde_disp_generic",
.id = PRIMARY_DISPLAY_ID,
.port = &port0,
.chnl_id = MCDE_CHNL_A,
.fifo = MCDE_FIFO_A,
#ifdef CONFIG_MCDE_DISPLAY_PRIMARY_16BPP
.default_pixel_format = MCDE_OVLYPIXFMT_RGB565,
#else
.default_pixel_format = MCDE_OVLYPIXFMT_RGBA8888,
#endif
.native_x_res = 864,
.native_y_res = 480,
#ifdef CONFIG_DISPLAY_GENERIC_DSI_PRIMARY_VSYNC
.synchronized_update = true,
#else
.synchronized_update = false,
#endif
/* TODO: Remove rotation buffers once ESRAM driver is completed */
.rotbuf1 = U5500_ESRAM_BASE + 0x20000 * 2,
.rotbuf2 = U5500_ESRAM_BASE + 0x20000 * 2 + 0x10000,
.dev = {
.platform_data = &u5500_generic_display0_pdata,
},
};
#endif /* CONFIG_DISPLAY_GENERIC_DSI_PRIMARY */
/*
* This function will create the framebuffer for the display that is registered.
*/
static int display_postregistered_callback(struct notifier_block *nb,
unsigned long event, void *dev)
{
struct mcde_display_device *ddev = dev;
u16 width, height;
u16 virtual_width, virtual_height;
u32 rotate = FB_ROTATE_UR;
if (event != MCDE_DSS_EVENT_DISPLAY_REGISTERED)
return 0;
if (ddev->id < PRIMARY_DISPLAY_ID || ddev->id >= ARRAY_SIZE(fbs))
return 0;
mcde_dss_get_native_resolution(ddev, &width, &height);
#ifdef CONFIG_DISPLAY_GENERIC_DSI_PRIMARY
if (ddev->id == PRIMARY_DISPLAY_ID) {
switch (CONFIG_DISPLAY_GENERIC_DSI_PRIMARY_ROTATION_ANGLE) {
case 0:
rotate = FB_ROTATE_UR;
break;
case 90:
rotate = FB_ROTATE_CW;
swap(width, height);
break;
case 180:
rotate = FB_ROTATE_UD;
break;
case 270:
rotate = FB_ROTATE_CCW;
swap(width, height);
break;
}
}
#endif
virtual_width = width;
virtual_height = height * 2;
#ifdef CONFIG_DISPLAY_GENERIC_DSI_PRIMARY_AUTO_SYNC
if (ddev->id == PRIMARY_DISPLAY_ID)
virtual_height = height;
#endif
/* Create frame buffer */
fbs[ddev->id] = mcde_fb_create(ddev,
width, height,
virtual_width, virtual_height,
ddev->default_pixel_format,
rotate);
if (IS_ERR(fbs[ddev->id]))
dev_warn(&ddev->dev, "Failed to create fb for display %s\n",
ddev->name);
else
dev_info(&ddev->dev, "Framebuffer created (%s)\n", ddev->name);
return 0;
}
static struct notifier_block display_nb = {
.notifier_call = display_postregistered_callback,
};
/*
* This function is used to refresh the display (lcd, hdmi, tvout) with black
* when the framebuffer is registered.
* The main display will not be updated if startup graphics is displayed
* from u-boot.
*/
#ifdef CONFIG_DISPLAY_GENERIC_DSI_PRIMARY_AUTO_SYNC
static int framebuffer_postregistered_callback(struct notifier_block *nb,
unsigned long event, void *data)
{
int ret = 0;
struct fb_event *event_data = data;
struct fb_info *info;
struct fb_var_screeninfo var;
struct fb_fix_screeninfo fix;
struct mcde_fb *mfb;
int i;
if (event != FB_EVENT_FB_REGISTERED)
return 0;
if (!event_data)
return 0;
info = event_data->info;
mfb = to_mcde_fb(info);
var = info->var;
fix = info->fix;
/* Apply overlay info */
for (i = 0; i < mfb->num_ovlys; i++) {
struct mcde_overlay *ovly = mfb->ovlys[i];
struct mcde_overlay_info ovly_info;
struct mcde_fb *mfb = to_mcde_fb(info);
memset(&ovly_info, 0, sizeof(ovly_info));
ovly_info.paddr = fix.smem_start +
fix.line_length * var.yoffset;
if (ovly_info.paddr + fix.line_length * var.yres
> fix.smem_start + fix.smem_len)
ovly_info.paddr = fix.smem_start;
ovly_info.fmt = mfb->pix_fmt;
ovly_info.stride = fix.line_length;
ovly_info.w = var.xres;
ovly_info.h = var.yres;
ovly_info.dirty.w = var.xres;
ovly_info.dirty.h = var.yres;
(void) mcde_dss_apply_overlay(ovly, &ovly_info);
ret = mcde_dss_update_overlay(ovly);
if (ret)
break;
}
return ret;
}
#else
static int framebuffer_postregistered_callback(struct notifier_block *nb,
unsigned long event, void *data)
{
int ret = 0;
struct fb_event *event_data = data;
struct fb_info *info;
struct fb_var_screeninfo var;
struct fb_fix_screeninfo fix;
struct mcde_fb *mfb;
if (event != FB_EVENT_FB_REGISTERED)
return 0;
if (!event_data)
return 0;
info = event_data->info;
mfb = to_mcde_fb(info);
if (mfb->id == 0 && display_initialized_during_boot)
goto out;
var = info->var;
fix = info->fix;
var.yoffset = var.yoffset ? 0 : var.yres;
if (info->fbops->fb_pan_display)
ret = info->fbops->fb_pan_display(&var, info);
out:
return ret;
}
#endif
static struct notifier_block framebuffer_nb = {
.notifier_call = framebuffer_postregistered_callback,
};
int __init init_display_devices_u5500(void)
{
int ret = 0;
if (!machine_is_u5500())
return ret;
ret = fb_register_client(&framebuffer_nb);
if (ret)
pr_warning("Failed to register framebuffer notifier\n");
ret = mcde_dss_register_notifier(&display_nb);
if (ret)
pr_warning("Failed to register dss notifier\n");
#ifdef CONFIG_DISPLAY_GENERIC_PRIMARY
if (display_initialized_during_boot)
u5500_generic_display0.power_mode = MCDE_DISPLAY_PM_STANDBY;
ret = mcde_display_device_register(&u5500_generic_display0);
if (ret)
pr_warning("Failed to register generic display device 0\n");
displays[0] = &u5500_generic_display0;
#endif
return ret;
}
module_init(init_display_devices_u5500);
#endif
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