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Commit bf5df0a2 authored by Antonino A. Daplas's avatar Antonino A. Daplas Committed by Linus Torvalds
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[PATCH] rivafb: 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 346bc210

drivers/video/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -740,6 +740,7 @@ config FB_RIVA 
	depends on FB && PCI

	select I2C_ALGOBIT if FB_RIVA_I2C

	select I2C if FB_RIVA_I2C

	select FB_DDC if FB_RIVA_I2C

	select FB_MODE_HELPERS

	select FB_CFB_FILLRECT

	select FB_CFB_COPYAREA

drivers/video/riva/rivafb-i2c.c

+2 −42
Original line number Diff line number Diff line
@@ -25,8 +25,6 @@ 
#include "rivafb.h"

#include "../edid.h"



#define RIVA_DDC 	0x50



static void riva_gpio_setscl(void* data, int state)

{

	struct riva_i2c_chan 	*chan = data;
@@ -158,50 +156,12 @@ void riva_delete_i2c_busses(struct riva_par *par) 
	par->chan[2].par = NULL;

}



static u8 *riva_do_probe_i2c_edid(struct riva_i2c_chan *chan)

{

	u8 start = 0x0;

	struct i2c_msg msgs[] = {

		{

			.addr	= RIVA_DDC,

			.len	= 1,

			.buf	= &start,

		}, {

			.addr	= RIVA_DDC,

			.flags	= I2C_M_RD,

			.len	= EDID_LENGTH,

		},

	};

	u8 *buf;



	if (!chan->par)

		return NULL;



	buf = kmalloc(EDID_LENGTH, GFP_KERNEL);

	if (!buf) {

		dev_warn(&chan->par->pdev->dev, "Out of memory!\n");

		return NULL;

	}

	msgs[1].buf = buf;



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

		return buf;

	dev_dbg(&chan->par->pdev->dev, "Unable to read EDID block.\n");

	kfree(buf);

	return NULL;

}



int riva_probe_i2c_connector(struct riva_par *par, int conn, u8 **out_edid)

{

	u8 *edid = NULL;

	int i;



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

		/* Do the real work */

		edid = riva_do_probe_i2c_edid(&par->chan[conn-1]);

		if (edid)

			break;

	}

	edid = fb_ddc_read(&par->chan[conn-1].adapter);



	if (out_edid)

		*out_edid = edid;

	if (!edid)