* Re: fsl diu, edid info and i2c platform data
2009-11-26 14:34 fsl diu, edid info and i2c platform data Kári Davíðsson
@ 2009-11-26 15:11 ` Kári Davíðsson
0 siblings, 0 replies; 2+ messages in thread
From: Kári Davíðsson @ 2009-11-26 15:11 UTC (permalink / raw)
To: linuxppc-dev@ozlabs.org
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Forgot the patch.
Kári Davíðsson wrote:
> Hi,
>
> I am messing about with the fsl-diu-fb.c which handles the display on mpc512x platforms.
> The display panels we are using provide EDID information and I would like to use that to setup
> the display modes etc. The current fsl-diu-fb.c is hard coding display modes into the driver.
>
> I have started this and it is working more or less but I appreciate all input from more knowledgeable people
> about how to do this "correctly" with the aim that others could benefit.
> I have the feeling I am not approaching this correctly.
>
> One option I was looking into was to use platform data for the i2c edid driver, e.g. for the platform to provide
> default fb_mode. But I have a big problem on how to attach the platform data to the i2cedid driver.
> I tried few options and while I think using code like :
>
> np = of_find_compatible_node( NULL, NULL, "vesa,edid" );
> if( np )
> {
> struct i2c_client * tsc2007 = NULL;
>
> // tsc2007 = of_find_i2c_device_by_node( np );
> if( tsc2007 )
> {
> tsc2007->dev.platform_data = &v39_edid_data;
> put_device( &tsc2007->dev );
> }
> of_node_put( np );
> }
>
> is the correct way to do it. The function of_find_i2c_device_by_node() hangs the kernel.
>
> Attached is the patch as I have it now. It compiles and works on our custom mpc5121 board for two different LCD panels.
>
> rg
> kd
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
>
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diff --git a/arch/powerpc/boot/dts/v39.dts b/arch/powerpc/boot/dts/v39.dts
new file mode 100644
index 0000000..c5a5eec
--- /dev/null
+++ b/arch/powerpc/boot/dts/v39.dts
@@ -0,0 +1,285 @@
+/*
+ * V39 Device Tree Source
+ *
+ * Copyright 2009 Marel ehf.
+ * Copyright 2007,2008 Freescale Semiconductor Inc.
+ *
+ * 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.
+ */
+
+/dts-v1/;
+
+/ {
+ model = "v39";
+ compatible = "marel,v39";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ PowerPC,5121@0 {
+ device_type = "cpu";
+ reg = <0>;
+ d-cache-line-size = <0x20>; // 32 bytes
+ i-cache-line-size = <0x20>; // 32 bytes
+ d-cache-size = <0x8000>; // L1, 32K
+ i-cache-size = <0x8000>; // L1, 32K
+ timebase-frequency = <49500000>;// 49.5 MHz (csb/4)
+ bus-frequency = <198000000>; // 198 MHz csb bus
+ clock-frequency = <396000000>; // 396 MHz ppc core
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x00000000 0x10000000>; // 256MB at 0
+ };
+
+ mbx@20000000 {
+ compatible = "fsl,mpc5121-mbx";
+ reg = <0x20000000 0x4000>;
+ interrupts = <66 0x8>;
+ interrupt-parent = < &ipic >;
+ };
+
+ sram@30000000 {
+ compatible = "fsl,mpc5121-sram";
+ reg = <0x30000000 0x20000>; // 128K at 0x30000000
+ };
+
+ soc@80000000 {
+ compatible = "fsl,mpc5121-immr";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ #interrupt-cells = <2>;
+ ranges = <0x0 0x80000000 0x400000>;
+ reg = <0x80000000 0x400000>;
+ bus-frequency = <66000000>; // 66 MHz ips bus
+
+
+ // IPIC
+ // interrupts cell = <intr #, sense>
+ // sense values match linux IORESOURCE_IRQ_* defines:
+ // sense == 8: Level, low assertion
+ // sense == 2: Edge, high-to-low change
+ //
+ ipic: interrupt-controller@c00 {
+ compatible = "fsl,mpc5121-ipic", "fsl,ipic";
+ interrupt-controller;
+ #address-cells = <0>;
+ #interrupt-cells = <2>;
+ reg = <0xc00 0x100>;
+ };
+
+ rtc@a00 { // Real time clock
+ compatible = "fsl,mpc5121-rtc";
+ reg = <0xa00 0x100>;
+ interrupts = <79 0x8 80 0x8>;
+ interrupt-parent = < &ipic >;
+ };
+
+ clock@f00 { // Clock control
+ compatible = "fsl,mpc5121-clock";
+ reg = <0xf00 0x100>;
+ };
+
+/*
+ gpio@1100 {
+ compatible = "fsl,mpc5121-gpio";
+ reg = <0x1100 0x100>;
+ interrupts = <78 0x8>;
+ interrupt-parent = < &ipic >;
+ };
+*/
+
+ mscan@1300 {
+ compatible = "fsl,mpc5121-mscan";
+ cell-index = <0>;
+ interrupts = <12 0x8>;
+ interrupt-parent = < &ipic >;
+ reg = <0x1300 0x80>;
+ clock-ipb;
+ };
+
+ mscan@1380 {
+ compatible = "fsl,mpc5121-mscan";
+ cell-index = <1>;
+ interrupts = <13 0x8>;
+ interrupt-parent = < &ipic >;
+ reg = <0x1380 0x80>;
+ clock-ipb;
+ };
+
+ edidbus: i2c@1700 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,mpc5121-i2c", "fsl-i2c";
+ cell-index = <0>;
+ reg = <0x1700 0x20>;
+ interrupts = <9 0x8>;
+ interrupt-parent = < &ipic >;
+ fsl5200-clocking;
+ edid: edid@50 {
+ compatible = "vesa,edid";
+ reg = <0x50>;
+ };
+ };
+
+ i2c@1720 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,mpc5121-i2c", "fsl-i2c";
+ cell-index = <1>;
+ reg = <0x1720 0x20>;
+ interrupts = <10 0x8>;
+ interrupt-parent = < &ipic >;
+ fsl5200-clocking;
+ };
+
+ i2c@1740 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,mpc5121-i2c", "fsl-i2c";
+ cell-index = <2>;
+ reg = <0x1740 0x20>;
+ interrupts = <11 0x8>;
+ interrupt-parent = < &ipic >;
+ fsl5200-clocking;
+ ts@49 {
+ compatible = "bb,tsc2007";
+ reg = <0x49>;
+ interrupts = <17 0x8>; // IRQ1 (17)
+ interrupt-parent = < &ipic >;
+ device_type="tsc";
+ };
+
+ };
+
+ i2ccontrol@1760 {
+ compatible = "fsl,mpc5121-i2c-ctrl";
+ reg = <0x1760 0x8>;
+ };
+
+ axe@2000 {
+ compatible = "fsl,mpc5121-axe";
+ reg = <0x2000 0x100>;
+ interrupts = <42 0x8>;
+ interrupt-parent = < &ipic >;
+ };
+
+ display@2100 {
+ device_type = "display";
+ compatible = "fsl,diu";
+ reg = <0x2100 0x100>;
+ interrupts = <64 0x8>;
+ interrupt-parent = < &ipic >;
+ edid = < &edidbus >;
+ };
+
+ mdio@2800 {
+ compatible = "fsl,mpc5121-fec-mdio";
+ reg = <0x2800 0x800>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ phy: ethernet-phy@0 {
+ reg = <1>;
+ device_type = "ethernet-phy";
+ };
+ };
+
+ ethernet@2800 {
+ device_type = "network";
+ compatible = "fsl,mpc5121-fec";
+ reg = <0x2800 0x800>;
+ local-mac-address = [ 00 00 00 00 00 00 ];
+ interrupts = <4 0x8>;
+ interrupt-parent = < &ipic >;
+ phy-handle = < &phy >;
+ fsl,align-tx-packets = <4>;
+ };
+
+ // 5121e has two dr usb modules
+ // USB1 using external ULPI PHY
+ usb@3000 {
+ compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr";
+ reg = <0x3000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupt-parent = < &ipic >;
+ interrupts = <43 0x8>;
+ dr_mode = "otg";
+ phy_type = "ulpi";
+ port1;
+ };
+
+ // USB0 using internal UTMI PHY
+ usb@4000 {
+ compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr";
+ reg = <0x4000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupt-parent = < &ipic >;
+ interrupts = <44 0x8>;
+ dr_mode = "otg";
+ phy_type = "utmi_wide";
+ port0;
+ };
+
+ // IO control
+ ioctl@a000 {
+ compatible = "fsl,mpc5121-ioctl";
+ reg = <0xA000 0x1000>;
+ };
+
+ // 512x PSCs are not 52xx PSC compatible
+ // PSC3 serial port A aka ttyPSC0
+ serial@11300 {
+ device_type = "serial";
+ compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
+ // Logical port assignment needed until driver
+ // learns to use aliases
+ port-number = <0>;
+ cell-index = <3>;
+ reg = <0x11300 0x100>;
+ interrupts = <40 0x8>;
+ interrupt-parent = < &ipic >;
+ rx-fifo-size = <16>;
+ tx-fifo-size = <16>;
+ };
+
+ // PSC4 serial port B aka ttyPSC1
+ serial@11400 {
+ device_type = "serial";
+ compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
+ // Logical port assignment needed until driver
+ // learns to use aliases
+ port-number = <1>;
+ cell-index = <4>;
+ reg = <0x11400 0x100>;
+ interrupts = <40 0x8>;
+ interrupt-parent = < &ipic >;
+ rx-fifo-size = <16>;
+ tx-fifo-size = <16>;
+ };
+
+ pscfifo@11f00 {
+ compatible = "fsl,mpc5121-psc-fifo";
+ reg = <0x11f00 0x100>;
+ interrupts = <40 0x8>;
+ interrupt-parent = < &ipic >;
+ };
+
+ dma@14000 {
+ compatible = "fsl,mpc5121-dma2", "fsl,mpc512x-dma2", "mpc512x-dma2";
+ reg = <0x14000 0x1800>;
+ interrupts = <65 0x8>;
+ interrupt-parent = < &ipic >;
+ };
+
+ };
+};
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 188e1ba..672d962 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -218,6 +218,15 @@ config FB_MODE_HELPERS
your driver does not take advantage of this feature, choosing Y will
just increase the kernel size by about 5K.
+config I2CEDID
+ bool "Encapsulate EDID functions with i2c driver"
+ depends on I2C
+ default n
+ ---help---
+ This helps with automatic probing of the EDID information from
+ of tree. Can probably help others where instantiation of the EDID
+ instantiation could be factored out of the console driver.
+
config FB_TILEBLITTING
bool "Enable Tile Blitting Support"
depends on FB
@@ -1827,6 +1836,8 @@ config FB_FSL_DIU
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
select PPC_LIB_RHEAP
+ select I2CEDID
+ select FB_DDC
---help---
Framebuffer driver for the Freescale SoC DIU
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 80232e1..c3c5a3d 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -4,6 +4,7 @@
# Each configuration option enables a list of files.
+obj-$(CONFIG_I2CEDID) += i2cedid.o
obj-$(CONFIG_VGASTATE) += vgastate.o
obj-y += fb_notify.o
obj-$(CONFIG_FB) += fb.o
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index 72d68b3..f6fcbae 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -35,6 +35,7 @@
#include <sysdev/fsl_soc.h>
#include "fsl-diu-fb.h"
+#include "i2cedid.h"
/*
* These parameters give default parameters
@@ -44,8 +45,8 @@
*/
static struct fb_videomode __devinitdata fsl_diu_default_mode = {
.refresh = 60,
- .xres = 1024,
- .yres = 768,
+ .xres = 640,
+ .yres = 480,
.pixclock = 15385,
.left_margin = 160,
.right_margin = 24,
@@ -57,132 +58,9 @@ static struct fb_videomode __devinitdata fsl_diu_default_mode = {
.vmode = FB_VMODE_NONINTERLACED
};
-static struct fb_videomode __devinitdata fsl_diu_mode_db[] = {
- {
- .name = "1024x768-60",
- .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
- },
- {
- .name = "1024x768-70",
- .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
- },
- {
- .name = "1024x768-75",
- .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
- },
- {
- .name = "1280x1024-60",
- .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
- },
- {
- .name = "1280x1024-70",
- .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
- },
- {
- .name = "1280x1024-75",
- .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
- },
- {
- .name = "320x240", /* for AOI only */
- .refresh = 60,
- .xres = 320,
- .yres = 240,
- .pixclock = 15385,
- .left_margin = 0,
- .right_margin = 0,
- .upper_margin = 0,
- .lower_margin = 0,
- .hsync_len = 0,
- .vsync_len = 0,
- .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
- .vmode = FB_VMODE_NONINTERLACED
- },
- {
- .name = "1280x480-60",
- .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
- },
-};
-
-static char *fb_mode = "1024x768-32@60";
+static char *fb_mode = "640x480-32@60";
static unsigned long default_bpp = 32;
-static int monitor_port;
+static int monitor_port = 0;
#if defined(CONFIG_NOT_COHERENT_CACHE)
static u8 *coherence_data;
@@ -325,7 +203,7 @@ static int fsl_diu_enable_panel(struct fb_info *info)
struct fsl_diu_data *machine_data = mfbi->parent;
int res = 0;
- pr_debug("enable_panel index %d\n", mfbi->index);
+ printk(KERN_INFO "enable_panel index %d\n", mfbi->index);
if (mfbi->type != MFB_TYPE_OFF) {
switch (mfbi->index) {
case 0: /* plane 0 */
@@ -704,8 +582,8 @@ static void update_lcdc(struct fb_info *info)
out_be32(&hw->gamma, pool.gamma.paddr);
out_be32(&hw->cursor, pool.cursor.paddr);
- out_be32(&hw->bgnd, 0x007F7F7F); /* BGND */
- out_be32(&hw->bgnd_wb, 0); /* BGND_WB */
+ out_be32(&hw->bgnd, 0x00000000); /* BGND */
+ out_be32(&hw->bgnd_wb, 0x00000000); /* BGND_WB */
out_be32(&hw->disp_size, (var->yres << 16 | var->xres));
/* DISP SIZE */
pr_debug("DIU xres: %d\n", var->xres);
@@ -1172,18 +1050,12 @@ 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";
if (init_fbinfo(info))
return -EINVAL;
- if (mfbi->index == 0) /* plane 0 */
- aoi_mode = fb_mode;
- else
- aoi_mode = init_aoi_mode;
- pr_debug("mode used = %s\n", aoi_mode);
- rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
- ARRAY_SIZE(fsl_diu_mode_db), &fsl_diu_default_mode, default_bpp);
+ pr_debug("mode used = %s\n", edid_fbmodetxt);
+ rc = fb_find_mode(&info->var, info, edid_fbmodetxt, edid_fbmonspec->modedb, edid_fbmonspec->modedb_len, &fsl_diu_default_mode, default_bpp);
switch (rc) {
case 1:
@@ -1428,6 +1300,8 @@ static int __devinit fsl_diu_probe(struct of_device *ofdev,
struct resource res;
struct fsl_diu_data *machine_data;
+ printk(KERN_INFO "The mode %s \n", edid_fbmodetxt );
+
machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
if (!machine_data)
return -ENOMEM;
@@ -1700,6 +1574,7 @@ static int __init fsl_diu_init(void)
if (!coherence_data)
return -ENOMEM;
#endif
+
ret = of_register_platform_driver(&fsl_diu_driver);
if (ret) {
printk(KERN_ERR
diff --git a/drivers/video/i2cedid.c b/drivers/video/i2cedid.c
new file mode 100644
index 0000000..ae5cd1f
--- /dev/null
+++ b/drivers/video/i2cedid.c
@@ -0,0 +1,102 @@
+/* Copyright 2009 Marel ehf. All Rights Reserverd.
+ *
+ * Author Kári Davíðsson <karidav@marel.is>
+ *
+ * Of platform driver for edid reading.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/list.h>
+#include <linux/fb.h>
+#include "i2cedid.h"
+#include "edid.h"
+
+static char fb_modexx[100];
+static struct fb_monspecs i2cedid_monspec;
+static struct fb_var_screeninfo i2cedid_screeninfo;
+
+struct fb_monspecs * edid_fbmonspec;
+EXPORT_SYMBOL( edid_fbmodespec );
+
+char * edid_fbmodetxt = &fb_modexx[0];
+EXPORT_SYMBOL( edid_fbmodetxt );
+
+static int __devinit i2cedid_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ char tblock[EDID_LENGTH];
+ s32 read = 0;
+
+ while( read < EDID_LENGTH)
+ {
+ s32 res;
+ res = i2c_smbus_read_i2c_block_data( client, read, EDID_LENGTH, &tblock[read]);
+ if( res > 0 )
+ {
+ read += res;
+ }
+ }
+
+ fb_edid_to_monspecs( &tblock[0], &i2cedid_monspec);
+
+ if( fb_parse_edid( &tblock[0], &i2cedid_screeninfo ) != 0 )
+ {
+ printk(KERN_WARNING "Unable to parse edid information\n");
+ return -ENODEV;
+ }
+
+ edid_fbmonspec = &i2cedid_monspec;
+
+ snprintf( &fb_modexx[0], sizeof(fb_modexx), "%dx%d-%d@%d", i2cedid_monspec.modedb[0].xres, i2cedid_monspec.modedb[0].yres, 32, i2cedid_monspec.modedb[0].refresh);
+ printk( KERN_INFO "fb_mode set to %s %d\n", fb_modexx, i2cedid_monspec.modedb[0].pixclock);
+
+
+
+ return 0;
+}
+
+static int __devexit i2cedid_remove(struct i2c_client *client)
+{
+ edid_fbmonspec = NULL;
+ fb_destroy_modedb( i2cedid_monspec.modedb );
+ memset( &i2cedid_monspec, 0, sizeof(i2cedid_monspec) );
+
+ return 0;
+}
+
+static struct i2c_device_id i2cedid_idtable[] = {
+ { "edid", 0 },
+ { },
+};
+
+MODULE_DEVICE_TABLE(i2c, i2cedid_idtable);
+
+static struct i2c_driver i2cedid_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "edid",
+ },
+ .id_table = i2cedid_idtable,
+ .probe = i2cedid_probe,
+ .remove = __devexit_p(i2cedid_remove),
+};
+
+static int __init i2cedid_init( void )
+{
+ return i2c_add_driver(&i2cedid_driver);
+}
+
+static void __exit i2cedid_exit( void )
+{
+ i2c_del_driver(&i2cedid_driver);
+}
+
+module_init( i2cedid_init );
+module_exit( i2cedid_exit );
+
+MODULE_AUTHOR( "Kári Davíðsson <karidav@marel.is>" );
+MODULE_DESCRIPTION( "I2C driver encapsulation for OF integration." );
+MODULE_LICENSE( "GPL" );
+
diff --git a/drivers/video/i2cedid.h b/drivers/video/i2cedid.h
new file mode 100644
index 0000000..4845201
--- /dev/null
+++ b/drivers/video/i2cedid.h
@@ -0,0 +1,14 @@
+/* Copyright 2009 Marel ehf. All Rights Reserverd.
+ *
+ * Author Kári Davíðsson <karidav@marel.is>
+ *
+ * Header file to Of platform driver for edid reading.
+ */
+
+#ifndef __I2CEDID_H__
+#define __I2CEDID_H__
+
+extern struct fb_monspecs * edid_fbmonspec;
+extern char * edid_fbmodetxt;
+
+#endif /* __I2CEDID_H__ */
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