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linux-next/drivers/video/matrox/i2c-matroxfb.c
Robert P. J. Day 5cbded585d [PATCH] getting rid of all casts of k[cmz]alloc() calls
Run this:

	#!/bin/sh
	for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do
	  echo "De-casting $f..."
	  perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f
	done

And then go through and reinstate those cases where code is casting pointers
to non-pointers.

And then drop a few hunks which conflicted with outstanding work.

Cc: Russell King <rmk@arm.linux.org.uk>, Ian Molton <spyro@f2s.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Greg KH <greg@kroah.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Ian Kent <raven@themaw.net>
Cc: Steven French <sfrench@us.ibm.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13 09:05:58 -08:00

224 lines
5.9 KiB
C

/*
*
* Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.
*
* (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
*
* Version: 1.64 2002/06/10
*
* See matroxfb_base.c for contributors.
*
*/
#include "matroxfb_base.h"
#include "matroxfb_maven.h"
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
/* MGA-TVO I2C for G200, G400 */
#define MAT_CLK 0x20
#define MAT_DATA 0x10
/* primary head DDC for Mystique(?), G100, G200, G400 */
#define DDC1_CLK 0x08
#define DDC1_DATA 0x02
/* primary head DDC for Millennium, Millennium II */
#define DDC1B_CLK 0x10
#define DDC1B_DATA 0x04
/* secondary head DDC for G400 */
#define DDC2_CLK 0x04
#define DDC2_DATA 0x01
/******************************************************/
struct matroxfb_dh_maven_info {
struct i2c_bit_adapter maven;
struct i2c_bit_adapter ddc1;
struct i2c_bit_adapter ddc2;
};
static int matroxfb_read_gpio(struct matrox_fb_info* minfo) {
unsigned long flags;
int v;
matroxfb_DAC_lock_irqsave(flags);
v = matroxfb_DAC_in(PMINFO DAC_XGENIODATA);
matroxfb_DAC_unlock_irqrestore(flags);
return v;
}
static void matroxfb_set_gpio(struct matrox_fb_info* minfo, int mask, int val) {
unsigned long flags;
int v;
matroxfb_DAC_lock_irqsave(flags);
v = (matroxfb_DAC_in(PMINFO DAC_XGENIOCTRL) & mask) | val;
matroxfb_DAC_out(PMINFO DAC_XGENIOCTRL, v);
/* We must reset GENIODATA very often... XFree plays with this register */
matroxfb_DAC_out(PMINFO DAC_XGENIODATA, 0x00);
matroxfb_DAC_unlock_irqrestore(flags);
}
/* software I2C functions */
static inline void matroxfb_i2c_set(struct matrox_fb_info* minfo, int mask, int state) {
if (state)
state = 0;
else
state = mask;
matroxfb_set_gpio(minfo, ~mask, state);
}
static void matroxfb_gpio_setsda(void* data, int state) {
struct i2c_bit_adapter* b = data;
matroxfb_i2c_set(b->minfo, b->mask.data, state);
}
static void matroxfb_gpio_setscl(void* data, int state) {
struct i2c_bit_adapter* b = data;
matroxfb_i2c_set(b->minfo, b->mask.clock, state);
}
static int matroxfb_gpio_getsda(void* data) {
struct i2c_bit_adapter* b = data;
return (matroxfb_read_gpio(b->minfo) & b->mask.data) ? 1 : 0;
}
static int matroxfb_gpio_getscl(void* data) {
struct i2c_bit_adapter* b = data;
return (matroxfb_read_gpio(b->minfo) & b->mask.clock) ? 1 : 0;
}
static struct i2c_adapter matrox_i2c_adapter_template =
{
.owner = THIS_MODULE,
.id = I2C_HW_B_G400,
};
static struct i2c_algo_bit_data matrox_i2c_algo_template =
{
.setsda = matroxfb_gpio_setsda,
.setscl = matroxfb_gpio_setscl,
.getsda = matroxfb_gpio_getsda,
.getscl = matroxfb_gpio_getscl,
.udelay = 10,
.timeout = 100,
};
static int i2c_bus_reg(struct i2c_bit_adapter* b, struct matrox_fb_info* minfo,
unsigned int data, unsigned int clock, const char* name) {
int err;
b->minfo = minfo;
b->mask.data = data;
b->mask.clock = clock;
b->adapter = matrox_i2c_adapter_template;
snprintf(b->adapter.name, I2C_NAME_SIZE, name,
minfo->fbcon.node);
i2c_set_adapdata(&b->adapter, b);
b->adapter.algo_data = &b->bac;
b->bac = matrox_i2c_algo_template;
b->bac.data = b;
err = i2c_bit_add_bus(&b->adapter);
b->initialized = !err;
return err;
}
static void i2c_bit_bus_del(struct i2c_bit_adapter* b) {
if (b->initialized) {
i2c_del_adapter(&b->adapter);
b->initialized = 0;
}
}
static inline void i2c_maven_done(struct matroxfb_dh_maven_info* minfo2) {
i2c_bit_bus_del(&minfo2->maven);
}
static inline void i2c_ddc1_done(struct matroxfb_dh_maven_info* minfo2) {
i2c_bit_bus_del(&minfo2->ddc1);
}
static inline void i2c_ddc2_done(struct matroxfb_dh_maven_info* minfo2) {
i2c_bit_bus_del(&minfo2->ddc2);
}
static void* i2c_matroxfb_probe(struct matrox_fb_info* minfo) {
int err;
unsigned long flags;
struct matroxfb_dh_maven_info* m2info;
m2info = kmalloc(sizeof(*m2info), GFP_KERNEL);
if (!m2info)
return NULL;
matroxfb_DAC_lock_irqsave(flags);
matroxfb_DAC_out(PMINFO DAC_XGENIODATA, 0xFF);
matroxfb_DAC_out(PMINFO DAC_XGENIOCTRL, 0x00);
matroxfb_DAC_unlock_irqrestore(flags);
memset(m2info, 0, sizeof(*m2info));
switch (ACCESS_FBINFO(chip)) {
case MGA_2064:
case MGA_2164:
err = i2c_bus_reg(&m2info->ddc1, minfo, DDC1B_DATA, DDC1B_CLK, "DDC:fb%u #0");
break;
default:
err = i2c_bus_reg(&m2info->ddc1, minfo, DDC1_DATA, DDC1_CLK, "DDC:fb%u #0");
break;
}
if (err)
goto fail_ddc1;
if (ACCESS_FBINFO(devflags.dualhead)) {
err = i2c_bus_reg(&m2info->ddc2, minfo, DDC2_DATA, DDC2_CLK, "DDC:fb%u #1");
if (err == -ENODEV) {
printk(KERN_INFO "i2c-matroxfb: VGA->TV plug detected, DDC unavailable.\n");
} else if (err)
printk(KERN_INFO "i2c-matroxfb: Could not register secondary output i2c bus. Continuing anyway.\n");
/* Register maven bus even on G450/G550 */
err = i2c_bus_reg(&m2info->maven, minfo, MAT_DATA, MAT_CLK, "MAVEN:fb%u");
if (err)
printk(KERN_INFO "i2c-matroxfb: Could not register Maven i2c bus. Continuing anyway.\n");
}
return m2info;
fail_ddc1:;
kfree(m2info);
printk(KERN_ERR "i2c-matroxfb: Could not register primary adapter DDC bus.\n");
return NULL;
}
static void i2c_matroxfb_remove(struct matrox_fb_info* minfo, void* data) {
struct matroxfb_dh_maven_info* m2info = data;
i2c_maven_done(m2info);
i2c_ddc2_done(m2info);
i2c_ddc1_done(m2info);
kfree(m2info);
}
static struct matroxfb_driver i2c_matroxfb = {
.node = LIST_HEAD_INIT(i2c_matroxfb.node),
.name = "i2c-matroxfb",
.probe = i2c_matroxfb_probe,
.remove = i2c_matroxfb_remove,
};
static int __init i2c_matroxfb_init(void) {
if (matroxfb_register_driver(&i2c_matroxfb)) {
printk(KERN_ERR "i2c-matroxfb: failed to register driver\n");
return -ENXIO;
}
return 0;
}
static void __exit i2c_matroxfb_exit(void) {
matroxfb_unregister_driver(&i2c_matroxfb);
}
MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
MODULE_DESCRIPTION("Support module providing I2C buses present on Matrox videocards");
module_init(i2c_matroxfb_init);
module_exit(i2c_matroxfb_exit);
/* no __setup required */
MODULE_LICENSE("GPL");