V4L/DVB (9200): bt819: convert i2c driver for new i2c API
- Convert to use v4l2-i2c-drv-legacy.h to be able to handle the new i2c API - Cleanups - Use v4l_dbg/v4l_info to have uniform kernel messages Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
bba0d98262
commit
7fd011fb95
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@ -29,44 +29,25 @@
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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/signal.h>
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#include <linux/types.h>
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#include <linux/i2c.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/ioctl.h>
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#include <asm/uaccess.h>
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#include <linux/i2c.h>
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#include <linux/i2c-id.h>
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#include <linux/videodev.h>
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#include <linux/video_decoder.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-i2c-drv-legacy.h>
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MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
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MODULE_AUTHOR("Mike Bernson & Dave Perks");
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MODULE_LICENSE("GPL");
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#define I2C_NAME(s) (s)->name
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static int debug;
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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 bt819 {
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@ -97,14 +78,9 @@ static struct timing timing_data[] = {
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{858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000},
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};
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#define I2C_BT819 0x8a
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/* ----------------------------------------------------------------------- */
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static inline int
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bt819_write (struct i2c_client *client,
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u8 reg,
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u8 value)
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static inline int bt819_write(struct i2c_client *client, u8 reg, u8 value)
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{
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struct bt819 *decoder = i2c_get_clientdata(client);
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@ -112,24 +88,15 @@ bt819_write (struct i2c_client *client,
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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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bt819_setbit (struct i2c_client *client,
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u8 reg,
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u8 bit,
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u8 value)
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static inline int bt819_setbit(struct i2c_client *client, u8 reg, u8 bit, u8 value)
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{
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struct bt819 *decoder = i2c_get_clientdata(client);
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return bt819_write(client, reg,
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(decoder->
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reg[reg] & ~(1 << bit)) |
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(value ? (1 << bit) : 0));
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(decoder->reg[reg] & ~(1 << bit)) | (value ? (1 << bit) : 0));
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}
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static int
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bt819_write_block (struct i2c_client *client,
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const u8 *data,
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unsigned int len)
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static int bt819_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
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{
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int ret = -1;
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u8 reg;
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@ -150,10 +117,9 @@ bt819_write_block (struct i2c_client *client,
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decoder->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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block_len < 32);
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if ((ret = i2c_master_send(client, block_data,
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block_len)) < 0)
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} while (len >= 2 && data[0] == reg && block_len < 32);
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ret = i2c_master_send(client, block_data, block_len);
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if (ret < 0)
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break;
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}
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} else {
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@ -169,20 +135,17 @@ bt819_write_block (struct i2c_client *client,
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return ret;
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}
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static inline int
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bt819_read (struct i2c_client *client,
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u8 reg)
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static inline int bt819_read(struct i2c_client *client, 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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bt819_init (struct i2c_client *client)
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static int bt819_init(struct i2c_client *client)
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{
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struct bt819 *decoder = i2c_get_clientdata(client);
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static unsigned char init[] = {
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//0x1f, 0x00, /* Reset */
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/*0x1f, 0x00,*/ /* Reset */
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0x01, 0x59, /* 0x01 input format */
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0x02, 0x00, /* 0x02 temporal decimation */
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0x03, 0x12, /* 0x03 Cropping msb */
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@ -218,12 +181,10 @@ bt819_init (struct i2c_client *client)
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struct timing *timing = &timing_data[decoder->norm];
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init[0x03 * 2 - 1] =
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(((timing->vdelay >> 8) & 0x03) << 6) | (((timing->
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vactive >> 8) &
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0x03) << 4) |
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(((timing->hdelay >> 8) & 0x03) << 2) | ((timing->
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hactive >> 8) &
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0x03);
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(((timing->vdelay >> 8) & 0x03) << 6) |
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(((timing->vactive >> 8) & 0x03) << 4) |
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(((timing->hdelay >> 8) & 0x03) << 2) |
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((timing->hactive >> 8) & 0x03);
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init[0x04 * 2 - 1] = timing->vdelay & 0xff;
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init[0x05 * 2 - 1] = timing->vactive & 0xff;
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init[0x06 * 2 - 1] = timing->hdelay & 0xff;
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@ -238,27 +199,22 @@ bt819_init (struct i2c_client *client)
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/* init */
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return bt819_write_block(client, init, sizeof(init));
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}
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/* ----------------------------------------------------------------------- */
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static int
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bt819_command (struct i2c_client *client,
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unsigned int cmd,
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void *arg)
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static int bt819_command(struct i2c_client *client, unsigned cmd, void *arg)
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{
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int temp;
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struct bt819 *decoder = i2c_get_clientdata(client);
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if (!decoder->initialized) { // First call to bt819_init could be
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bt819_init(client); // without #FRST = 0
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if (!decoder->initialized) { /* First call to bt819_init could be */
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bt819_init(client); /* without #FRST = 0 */
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decoder->initialized = 1;
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}
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switch (cmd) {
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case 0:
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/* This is just for testing!!! */
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bt819_init(client);
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@ -274,8 +230,8 @@ bt819_command (struct i2c_client *client,
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VIDEO_DECODER_CCIR;
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cap->inputs = 8;
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cap->outputs = 1;
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}
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break;
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}
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case DECODER_GET_STATUS:
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{
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@ -285,9 +241,9 @@ bt819_command (struct i2c_client *client,
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status = bt819_read(client, 0x00);
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res = 0;
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if ((status & 0x80)) {
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if ((status & 0x80))
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res |= DECODER_STATUS_GOOD;
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}
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switch (decoder->norm) {
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case VIDEO_MODE_NTSC:
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res |= DECODER_STATUS_NTSC;
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@ -297,28 +253,25 @@ bt819_command (struct i2c_client *client,
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break;
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default:
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case VIDEO_MODE_AUTO:
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if ((status & 0x10)) {
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if ((status & 0x10))
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res |= DECODER_STATUS_PAL;
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} else {
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else
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res |= DECODER_STATUS_NTSC;
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}
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break;
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}
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res |= DECODER_STATUS_COLOR;
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*iarg = res;
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dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client),
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*iarg);
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}
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v4l_dbg(1, debug, client, "get status %x\n", *iarg);
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break;
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}
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case DECODER_SET_NORM:
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{
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int *iarg = arg;
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struct timing *timing = NULL;
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dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client),
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*iarg);
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v4l_dbg(1, debug, client, "set norm %x\n", *iarg);
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switch (*iarg) {
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case VIDEO_MODE_NTSC:
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@ -327,7 +280,7 @@ bt819_command (struct i2c_client *client,
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bt819_setbit(client, 0x01, 5, 0);
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bt819_write(client, 0x18, 0x68);
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bt819_write(client, 0x19, 0x5d);
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//bt819_setbit(client, 0x1a, 5, 1);
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/* bt819_setbit(client, 0x1a, 5, 1); */
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timing = &timing_data[VIDEO_MODE_NTSC];
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break;
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case VIDEO_MODE_PAL:
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@ -336,7 +289,7 @@ bt819_command (struct i2c_client *client,
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bt819_setbit(client, 0x01, 5, 1);
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bt819_write(client, 0x18, 0x7f);
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bt819_write(client, 0x19, 0x72);
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//bt819_setbit(client, 0x1a, 5, 0);
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/* bt819_setbit(client, 0x1a, 5, 0); */
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timing = &timing_data[VIDEO_MODE_PAL];
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break;
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case VIDEO_MODE_AUTO:
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@ -344,10 +297,7 @@ bt819_command (struct i2c_client *client,
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bt819_setbit(client, 0x01, 1, 0);
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break;
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default:
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dprintk(1,
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KERN_ERR
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"%s: unsupported norm %d\n",
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I2C_NAME(client), *iarg);
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v4l_dbg(1, debug, client, "unsupported norm %x\n", *iarg);
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return -EINVAL;
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}
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@ -366,19 +316,17 @@ bt819_command (struct i2c_client *client,
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}
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decoder->norm = *iarg;
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}
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break;
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}
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case DECODER_SET_INPUT:
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{
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int *iarg = arg;
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dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client),
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*iarg);
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v4l_dbg(1, debug, client, "set input %x\n", *iarg);
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if (*iarg < 0 || *iarg > 7) {
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if (*iarg < 0 || *iarg > 7)
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return -EINVAL;
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}
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if (decoder->input != *iarg) {
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decoder->input = *iarg;
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@ -391,52 +339,42 @@ bt819_command (struct i2c_client *client,
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bt819_setbit(client, 0x1a, 1, 0);
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}
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}
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}
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break;
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}
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case DECODER_SET_OUTPUT:
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{
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int *iarg = arg;
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dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client),
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*iarg);
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v4l_dbg(1, debug, client, "set output %x\n", *iarg);
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/* not much choice of outputs */
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if (*iarg != 0) {
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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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}
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case DECODER_ENABLE_OUTPUT:
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{
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int *iarg = arg;
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int enable = (*iarg != 0);
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dprintk(1, KERN_INFO "%s: enable output %x\n",
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I2C_NAME(client), *iarg);
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v4l_dbg(1, debug, client, "enable output %x\n", *iarg);
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if (decoder->enable != enable) {
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decoder->enable = enable;
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if (decoder->enable) {
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bt819_setbit(client, 0x16, 7, 0);
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} else {
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bt819_setbit(client, 0x16, 7, 1);
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}
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bt819_setbit(client, 0x16, 7, !enable);
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}
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}
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break;
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}
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case DECODER_SET_PICTURE:
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{
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struct video_picture *pic = arg;
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dprintk(1,
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KERN_INFO
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"%s: set picture brightness %d contrast %d colour %d\n",
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I2C_NAME(client), pic->brightness, pic->contrast,
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pic->colour);
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v4l_dbg(1, debug, client,
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"set picture brightness %d contrast %d colour %d\n",
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pic->brightness, pic->contrast, pic->colour);
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if (decoder->bright != pic->brightness) {
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@ -474,8 +412,8 @@ bt819_command (struct i2c_client *client,
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bt819_write(client, 0x0f,
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128 - (decoder->hue >> 8));
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}
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}
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break;
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}
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default:
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return -EINVAL;
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@ -486,55 +424,44 @@ bt819_command (struct i2c_client *client,
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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_BT819 >> 1,
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I2C_CLIENT_END,
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};
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static unsigned short normal_i2c[] = { 0x8a >> 1, I2C_CLIENT_END };
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static unsigned short ignore = I2C_CLIENT_END;
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I2C_CLIENT_INSMOD;
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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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};
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static struct i2c_driver i2c_driver_bt819;
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static int
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bt819_detect_client (struct i2c_adapter *adapter,
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int address,
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int kind)
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static int bt819_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int i, id;
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int i, ver;
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struct bt819 *decoder;
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struct i2c_client *client;
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dprintk(1,
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KERN_INFO
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"bt819: detecting bt819 client on address 0x%x\n",
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address << 1);
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const char *name;
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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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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -ENODEV;
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client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
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if (!client)
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return -ENOMEM;
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client->addr = address;
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client->adapter = adapter;
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client->driver = &i2c_driver_bt819;
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ver = bt819_read(client, 0x17);
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switch (ver & 0xf0) {
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case 0x70:
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name = "bt819a";
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break;
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case 0x60:
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name = "bt817a";
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break;
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case 0x20:
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name = "bt815a";
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break;
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default:
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v4l_dbg(1, debug, client,
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"unknown chip version 0x%02x\n", ver);
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return -ENODEV;
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}
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v4l_info(client, "%s found @ 0x%x (%s)\n", name,
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client->addr << 1, client->adapter->name);
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decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL);
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if (decoder == NULL) {
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kfree(client);
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if (decoder == NULL)
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return -ENOMEM;
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}
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decoder->norm = VIDEO_MODE_NTSC;
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decoder->input = 0;
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decoder->enable = 1;
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@ -545,97 +472,33 @@ bt819_detect_client (struct i2c_adapter *adapter,
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decoder->initialized = 0;
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i2c_set_clientdata(client, decoder);
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id = bt819_read(client, 0x17);
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switch (id & 0xf0) {
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case 0x70:
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strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client)));
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break;
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case 0x60:
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strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client)));
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break;
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case 0x20:
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strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client)));
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break;
|
||||
default:
|
||||
dprintk(1,
|
||||
KERN_ERR
|
||||
"bt819: unknown chip version 0x%x (ver 0x%x)\n",
|
||||
id & 0xf0, id & 0x0f);
|
||||
kfree(decoder);
|
||||
kfree(client);
|
||||
return 0;
|
||||
}
|
||||
|
||||
i = i2c_attach_client(client);
|
||||
if (i) {
|
||||
kfree(client);
|
||||
kfree(decoder);
|
||||
return i;
|
||||
}
|
||||
|
||||
i = bt819_init(client);
|
||||
if (i < 0) {
|
||||
dprintk(1, KERN_ERR "%s_attach: init status %d\n",
|
||||
I2C_NAME(client), i);
|
||||
} else {
|
||||
dprintk(1,
|
||||
KERN_INFO
|
||||
"%s_attach: chip version 0x%x at address 0x%x\n",
|
||||
I2C_NAME(client), id & 0x0f,
|
||||
client->addr << 1);
|
||||
}
|
||||
|
||||
if (i < 0)
|
||||
v4l_dbg(1, debug, client, "init status %d\n", i);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
bt819_attach_adapter (struct i2c_adapter *adapter)
|
||||
static int bt819_remove(struct i2c_client *client)
|
||||
{
|
||||
return i2c_probe(adapter, &addr_data, &bt819_detect_client);
|
||||
}
|
||||
|
||||
static int
|
||||
bt819_detach_client (struct i2c_client *client)
|
||||
{
|
||||
struct bt819 *decoder = i2c_get_clientdata(client);
|
||||
int err;
|
||||
|
||||
err = i2c_detach_client(client);
|
||||
if (err) {
|
||||
return err;
|
||||
}
|
||||
|
||||
kfree(decoder);
|
||||
kfree(client);
|
||||
|
||||
kfree(i2c_get_clientdata(client));
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ----------------------------------------------------------------------- */
|
||||
|
||||
static struct i2c_driver i2c_driver_bt819 = {
|
||||
.driver = {
|
||||
.name = "bt819",
|
||||
},
|
||||
|
||||
.id = I2C_DRIVERID_BT819,
|
||||
|
||||
.attach_adapter = bt819_attach_adapter,
|
||||
.detach_client = bt819_detach_client,
|
||||
.command = bt819_command,
|
||||
static const struct i2c_device_id bt819_id[] = {
|
||||
{ "bt819a", 0 },
|
||||
{ "bt817a", 0 },
|
||||
{ "bt815a", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, bt819_id);
|
||||
|
||||
static int __init
|
||||
bt819_init_module (void)
|
||||
{
|
||||
return i2c_add_driver(&i2c_driver_bt819);
|
||||
}
|
||||
|
||||
static void __exit
|
||||
bt819_exit (void)
|
||||
{
|
||||
i2c_del_driver(&i2c_driver_bt819);
|
||||
}
|
||||
|
||||
module_init(bt819_init_module);
|
||||
module_exit(bt819_exit);
|
||||
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
||||
.name = "bt819",
|
||||
.driverid = I2C_DRIVERID_BT819,
|
||||
.command = bt819_command,
|
||||
.probe = bt819_probe,
|
||||
.remove = bt819_remove,
|
||||
.id_table = bt819_id,
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue