68cc9d0b71
On top of my previous patch which removes the use of address ranges in video i2c drivers, this one can save an additional few bytes of memory. Most of these drivers which do not use I2C_CLIENT_INSMOD initialize the unused address lists in a less than optimal way. This patch simply optimizes this, by using a single one-element list instead of 3 different lists with two elements each. This saves an average 63 bytes on these drivers. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> diff -ruN linux-2.6.12-rc1-bk5.orig/drivers/media/video/adv7170.c linux-2.6.12-rc1-bk5/drivers/media/video/adv7170.c
528 lines
12 KiB
C
528 lines
12 KiB
C
/*
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* adv7170 - adv7170, adv7171 video encoder driver version 0.0.1
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*
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* Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
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*
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* Based on adv7176 driver by:
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*
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* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
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* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
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* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
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* - some corrections for Pinnacle Systems Inc. DC10plus card.
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*
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* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
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* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/pci.h>
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#include <linux/signal.h>
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#include <asm/io.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <linux/sched.h>
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#include <asm/segment.h>
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#include <linux/types.h>
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#include <linux/videodev.h>
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#include <asm/uaccess.h>
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MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
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MODULE_AUTHOR("Maxim Yevtyushkin");
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MODULE_LICENSE("GPL");
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#include <linux/i2c.h>
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#include <linux/i2c-dev.h>
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#define I2C_NAME(x) (x)->name
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#include <linux/video_encoder.h>
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static int debug = 0;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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#define dprintk(num, format, args...) \
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do { \
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if (debug >= num) \
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printk(format, ##args); \
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} while (0)
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/* ----------------------------------------------------------------------- */
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struct adv7170 {
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unsigned char reg[128];
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int norm;
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int input;
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int enable;
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int bright;
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int contrast;
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int hue;
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int sat;
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};
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#define I2C_ADV7170 0xd4
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#define I2C_ADV7171 0x54
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static char adv7170_name[] = "adv7170";
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static char adv7171_name[] = "adv7171";
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static char *inputs[] = { "pass_through", "play_back" };
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static char *norms[] = { "PAL", "NTSC" };
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/* ----------------------------------------------------------------------- */
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static inline int
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adv7170_write (struct i2c_client *client,
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u8 reg,
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u8 value)
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{
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struct adv7170 *encoder = i2c_get_clientdata(client);
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encoder->reg[reg] = value;
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static inline int
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adv7170_read (struct i2c_client *client,
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u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int
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adv7170_write_block (struct i2c_client *client,
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const u8 *data,
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unsigned int len)
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{
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int ret = -1;
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u8 reg;
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/* the adv7170 has an autoincrement function, use it if
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* the adapter understands raw I2C */
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if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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/* do raw I2C, not smbus compatible */
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struct adv7170 *encoder = i2c_get_clientdata(client);
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struct i2c_msg msg;
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u8 block_data[32];
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msg.addr = client->addr;
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msg.flags = 0;
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while (len >= 2) {
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msg.buf = (char *) block_data;
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msg.len = 0;
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block_data[msg.len++] = reg = data[0];
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do {
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block_data[msg.len++] =
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encoder->reg[reg++] = data[1];
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len -= 2;
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data += 2;
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} while (len >= 2 && data[0] == reg &&
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msg.len < 32);
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if ((ret = i2c_transfer(client->adapter,
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&msg, 1)) < 0)
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break;
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}
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} else {
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/* do some slow I2C emulation kind of thing */
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while (len >= 2) {
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reg = *data++;
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if ((ret = adv7170_write(client, reg,
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*data++)) < 0)
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break;
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len -= 2;
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}
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}
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return ret;
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}
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/* ----------------------------------------------------------------------- */
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// Output filter: S-Video Composite
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#define MR050 0x11 //0x09
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#define MR060 0x14 //0x0c
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//---------------------------------------------------------------------------
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#define TR0MODE 0x4c
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#define TR0RST 0x80
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#define TR1CAPT 0x00
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#define TR1PLAY 0x00
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static const unsigned char init_NTSC[] = {
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0x00, 0x10, // MR0
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0x01, 0x20, // MR1
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0x02, 0x0e, // MR2 RTC control: bits 2 and 1
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0x03, 0x80, // MR3
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0x04, 0x30, // MR4
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0x05, 0x00, // Reserved
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0x06, 0x00, // Reserved
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0x07, TR0MODE, // TM0
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0x08, TR1CAPT, // TM1
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0x09, 0x16, // Fsc0
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0x0a, 0x7c, // Fsc1
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0x0b, 0xf0, // Fsc2
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0x0c, 0x21, // Fsc3
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0x0d, 0x00, // Subcarrier Phase
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0x0e, 0x00, // Closed Capt. Ext 0
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0x0f, 0x00, // Closed Capt. Ext 1
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0x10, 0x00, // Closed Capt. 0
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0x11, 0x00, // Closed Capt. 1
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0x12, 0x00, // Pedestal Ctl 0
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0x13, 0x00, // Pedestal Ctl 1
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0x14, 0x00, // Pedestal Ctl 2
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0x15, 0x00, // Pedestal Ctl 3
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0x16, 0x00, // CGMS_WSS_0
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0x17, 0x00, // CGMS_WSS_1
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0x18, 0x00, // CGMS_WSS_2
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0x19, 0x00, // Teletext Ctl
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};
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static const unsigned char init_PAL[] = {
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0x00, 0x71, // MR0
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0x01, 0x20, // MR1
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0x02, 0x0e, // MR2 RTC control: bits 2 and 1
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0x03, 0x80, // MR3
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0x04, 0x30, // MR4
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0x05, 0x00, // Reserved
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0x06, 0x00, // Reserved
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0x07, TR0MODE, // TM0
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0x08, TR1CAPT, // TM1
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0x09, 0xcb, // Fsc0
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0x0a, 0x8a, // Fsc1
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0x0b, 0x09, // Fsc2
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0x0c, 0x2a, // Fsc3
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0x0d, 0x00, // Subcarrier Phase
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0x0e, 0x00, // Closed Capt. Ext 0
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0x0f, 0x00, // Closed Capt. Ext 1
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0x10, 0x00, // Closed Capt. 0
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0x11, 0x00, // Closed Capt. 1
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0x12, 0x00, // Pedestal Ctl 0
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0x13, 0x00, // Pedestal Ctl 1
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0x14, 0x00, // Pedestal Ctl 2
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0x15, 0x00, // Pedestal Ctl 3
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0x16, 0x00, // CGMS_WSS_0
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0x17, 0x00, // CGMS_WSS_1
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0x18, 0x00, // CGMS_WSS_2
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0x19, 0x00, // Teletext Ctl
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};
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static int
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adv7170_command (struct i2c_client *client,
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unsigned int cmd,
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void * arg)
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{
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struct adv7170 *encoder = i2c_get_clientdata(client);
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switch (cmd) {
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case 0:
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#if 0
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/* This is just for testing!!! */
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adv7170_write_block(client, init_common,
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sizeof(init_common));
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adv7170_write(client, 0x07, TR0MODE | TR0RST);
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adv7170_write(client, 0x07, TR0MODE);
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#endif
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break;
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case ENCODER_GET_CAPABILITIES:
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{
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struct video_encoder_capability *cap = arg;
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cap->flags = VIDEO_ENCODER_PAL |
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VIDEO_ENCODER_NTSC;
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cap->inputs = 2;
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cap->outputs = 1;
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}
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break;
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case ENCODER_SET_NORM:
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{
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int iarg = *(int *) arg;
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dprintk(1, KERN_DEBUG "%s_command: set norm %d",
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I2C_NAME(client), iarg);
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switch (iarg) {
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case VIDEO_MODE_NTSC:
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adv7170_write_block(client, init_NTSC,
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sizeof(init_NTSC));
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if (encoder->input == 0)
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adv7170_write(client, 0x02, 0x0e); // Enable genlock
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adv7170_write(client, 0x07, TR0MODE | TR0RST);
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adv7170_write(client, 0x07, TR0MODE);
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break;
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case VIDEO_MODE_PAL:
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adv7170_write_block(client, init_PAL,
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sizeof(init_PAL));
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if (encoder->input == 0)
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adv7170_write(client, 0x02, 0x0e); // Enable genlock
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adv7170_write(client, 0x07, TR0MODE | TR0RST);
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adv7170_write(client, 0x07, TR0MODE);
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break;
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default:
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dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
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I2C_NAME(client), iarg);
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return -EINVAL;
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}
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dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client),
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norms[iarg]);
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encoder->norm = iarg;
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}
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break;
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case ENCODER_SET_INPUT:
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{
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int iarg = *(int *) arg;
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/* RJ: *iarg = 0: input is from decoder
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*iarg = 1: input is from ZR36060
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*iarg = 2: color bar */
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dprintk(1, KERN_DEBUG "%s_command: set input from %s\n",
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I2C_NAME(client),
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iarg == 0 ? "decoder" : "ZR36060");
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switch (iarg) {
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case 0:
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adv7170_write(client, 0x01, 0x20);
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adv7170_write(client, 0x08, TR1CAPT); /* TR1 */
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adv7170_write(client, 0x02, 0x0e); // Enable genlock
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adv7170_write(client, 0x07, TR0MODE | TR0RST);
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adv7170_write(client, 0x07, TR0MODE);
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//udelay(10);
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break;
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case 1:
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adv7170_write(client, 0x01, 0x00);
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adv7170_write(client, 0x08, TR1PLAY); /* TR1 */
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adv7170_write(client, 0x02, 0x08);
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adv7170_write(client, 0x07, TR0MODE | TR0RST);
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adv7170_write(client, 0x07, TR0MODE);
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//udelay(10);
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break;
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default:
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dprintk(1, KERN_ERR "%s: illegal input: %d\n",
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I2C_NAME(client), iarg);
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return -EINVAL;
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}
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dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client),
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inputs[iarg]);
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encoder->input = iarg;
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}
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break;
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case ENCODER_SET_OUTPUT:
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{
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int *iarg = arg;
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/* not much choice of outputs */
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if (*iarg != 0) {
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return -EINVAL;
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}
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}
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break;
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case ENCODER_ENABLE_OUTPUT:
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{
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int *iarg = arg;
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encoder->enable = !!*iarg;
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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/*
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* Generic i2c probe
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* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
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*/
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static unsigned short normal_i2c[] =
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{ I2C_ADV7170 >> 1, (I2C_ADV7170 >> 1) + 1,
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I2C_ADV7171 >> 1, (I2C_ADV7171 >> 1) + 1,
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I2C_CLIENT_END
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};
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static unsigned short ignore = I2C_CLIENT_END;
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static struct i2c_client_address_data addr_data = {
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.normal_i2c = normal_i2c,
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.probe = &ignore,
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.ignore = &ignore,
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.force = &ignore,
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};
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static struct i2c_driver i2c_driver_adv7170;
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static int
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adv7170_detect_client (struct i2c_adapter *adapter,
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int address,
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int kind)
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{
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int i;
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struct i2c_client *client;
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struct adv7170 *encoder;
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char *dname;
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dprintk(1,
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KERN_INFO
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"adv7170.c: detecting adv7170 client on address 0x%x\n",
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address << 1);
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/* Check if the adapter supports the needed features */
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return 0;
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client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (client == 0)
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return -ENOMEM;
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memset(client, 0, sizeof(struct i2c_client));
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client->addr = address;
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client->adapter = adapter;
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client->driver = &i2c_driver_adv7170;
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client->flags = I2C_CLIENT_ALLOW_USE;
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if ((client->addr == I2C_ADV7170 >> 1) ||
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(client->addr == (I2C_ADV7170 >> 1) + 1)) {
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dname = adv7170_name;
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} else if ((client->addr == I2C_ADV7171 >> 1) ||
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(client->addr == (I2C_ADV7171 >> 1) + 1)) {
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dname = adv7171_name;
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} else {
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/* We should never get here!!! */
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kfree(client);
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return 0;
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}
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strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
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encoder = kmalloc(sizeof(struct adv7170), GFP_KERNEL);
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if (encoder == NULL) {
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kfree(client);
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return -ENOMEM;
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}
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memset(encoder, 0, sizeof(struct adv7170));
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encoder->norm = VIDEO_MODE_NTSC;
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encoder->input = 0;
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encoder->enable = 1;
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i2c_set_clientdata(client, encoder);
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i = i2c_attach_client(client);
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if (i) {
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kfree(client);
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kfree(encoder);
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return i;
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}
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i = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC));
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if (i >= 0) {
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i = adv7170_write(client, 0x07, TR0MODE | TR0RST);
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i = adv7170_write(client, 0x07, TR0MODE);
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i = adv7170_read(client, 0x12);
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dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%02x\n",
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I2C_NAME(client), i & 1, client->addr << 1);
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}
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if (i < 0) {
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dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
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I2C_NAME(client), i);
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}
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return 0;
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}
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static int
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adv7170_attach_adapter (struct i2c_adapter *adapter)
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{
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dprintk(1,
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KERN_INFO
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"adv7170.c: starting probe for adapter %s (0x%x)\n",
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I2C_NAME(adapter), adapter->id);
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return i2c_probe(adapter, &addr_data, &adv7170_detect_client);
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}
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static int
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adv7170_detach_client (struct i2c_client *client)
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{
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struct adv7170 *encoder = i2c_get_clientdata(client);
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int err;
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err = i2c_detach_client(client);
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if (err) {
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return err;
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}
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kfree(encoder);
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kfree(client);
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static struct i2c_driver i2c_driver_adv7170 = {
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.owner = THIS_MODULE,
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.name = "adv7170", /* name */
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.id = I2C_DRIVERID_ADV7170,
|
|
.flags = I2C_DF_NOTIFY,
|
|
|
|
.attach_adapter = adv7170_attach_adapter,
|
|
.detach_client = adv7170_detach_client,
|
|
.command = adv7170_command,
|
|
};
|
|
|
|
static int __init
|
|
adv7170_init (void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_adv7170);
|
|
}
|
|
|
|
static void __exit
|
|
adv7170_exit (void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_adv7170);
|
|
}
|
|
|
|
module_init(adv7170_init);
|
|
module_exit(adv7170_exit);
|