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Commit e80987f8 authored by Antonino A. Daplas's avatar Antonino A. Daplas Committed by Linus Torvalds
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[PATCH] i810fb: Use generic DDC reading 



Update driver to use generic DDC reading

Signed-off-by: default avatarAntonino Daplas <adaplas@pol.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent bf5df0a2

drivers/video/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -829,6 +829,7 @@ config FB_I810_I2C 
	depends on FB_I810 && FB_I810_GTF

	select I2C

	select I2C_ALGOBIT

	select FB_DDC

	help



config FB_INTEL

drivers/video/i810/i810-i2c.c

+1 −41
Original line number Diff line number Diff line
@@ -19,7 +19,6 @@ 
#include "i810_main.h"

#include "../edid.h"



#define I810_DDC 0x50

/* bit locations in the registers */

#define SCL_DIR_MASK		0x0001

#define SCL_DIR			0x0002
@@ -150,53 +149,14 @@ void i810_delete_i2c_busses(struct i810fb_par *par) 
	par->chan[2].par = NULL;

}



static u8 *i810_do_probe_i2c_edid(struct i810fb_i2c_chan *chan)

{

        u8 start = 0x0;

        struct i2c_msg msgs[] = {

                {

                        .addr   = I810_DDC,

                        .len    = 1,

                        .buf    = &start,

                }, {

                        .addr   = I810_DDC,

                        .flags  = I2C_M_RD,

                        .len    = EDID_LENGTH,

                },

        };

        u8 *buf;



        buf = kmalloc(EDID_LENGTH, GFP_KERNEL);

        if (!buf) {

		DPRINTK("i810-i2c: Failed to allocate memory\n");

                return NULL;

        }

        msgs[1].buf = buf;



        if (i2c_transfer(&chan->adapter, msgs, 2) == 2) {

		DPRINTK("i810-i2c: I2C Transfer successful\n");

                return buf;

	}



        DPRINTK("i810-i2c: Unable to read EDID block.\n");

        kfree(buf);

        return NULL;

}



int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid, int conn)

{

	struct i810fb_par *par = info->par;

        u8 *edid = NULL;

        int i;



	DPRINTK("i810-i2c: Probe DDC%i Bus\n", conn+1);

	if (conn < par->ddc_num) {

		for (i = 0; i < 3; i++) {

			/* Do the real work */

			edid = i810_do_probe_i2c_edid(&par->chan[conn]);

			if (edid)

				break;

		}

		edid = fb_ddc_read(&par->chan[conn].adapter);

	} else {

		const u8 *e = fb_firmware_edid(info->device);