diff options
author | Manu Abraham <manu@linuxtv.org> | 2006-03-17 12:07:22 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-03-24 16:26:50 -0300 |
commit | faecfb1760325613debd8df9b9374ce4a28c01d9 (patch) | |
tree | 844e0446e82f07c5d8007d62f7e3a842987e194b /drivers/media/video/bttv-i2c.c | |
parent | 280323ddbc595c463f89c30f3f0f823b076bb4e3 (diff) |
V4L/DVB (3539): Move bttv fragments to bt8xx/
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/bttv-i2c.c')
-rw-r--r-- | drivers/media/video/bttv-i2c.c | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/drivers/media/video/bttv-i2c.c b/drivers/media/video/bttv-i2c.c deleted file mode 100644 index 614c12018557..000000000000 --- a/drivers/media/video/bttv-i2c.c +++ /dev/null @@ -1,474 +0,0 @@ -/* - - bttv-i2c.c -- all the i2c code is here - - bttv - Bt848 frame grabber driver - - Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de) - & Marcus Metzler (mocm@thp.uni-koeln.de) - (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -*/ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/delay.h> - -#include "bttvp.h" -#include <media/v4l2-common.h> -#include <linux/jiffies.h> -#include <asm/io.h> - -static struct i2c_algo_bit_data bttv_i2c_algo_bit_template; -static struct i2c_adapter bttv_i2c_adap_sw_template; -static struct i2c_adapter bttv_i2c_adap_hw_template; -static struct i2c_client bttv_i2c_client_template; - -static int attach_inform(struct i2c_client *client); - -static int i2c_debug; -static int i2c_hw; -static int i2c_scan; -module_param(i2c_debug, int, 0644); -module_param(i2c_hw, int, 0444); -module_param(i2c_scan, int, 0444); -MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time"); - -/* ----------------------------------------------------------------------- */ -/* I2C functions - bitbanging adapter (software i2c) */ - -static void bttv_bit_setscl(void *data, int state) -{ - struct bttv *btv = (struct bttv*)data; - - if (state) - btv->i2c_state |= 0x02; - else - btv->i2c_state &= ~0x02; - btwrite(btv->i2c_state, BT848_I2C); - btread(BT848_I2C); -} - -static void bttv_bit_setsda(void *data, int state) -{ - struct bttv *btv = (struct bttv*)data; - - if (state) - btv->i2c_state |= 0x01; - else - btv->i2c_state &= ~0x01; - btwrite(btv->i2c_state, BT848_I2C); - btread(BT848_I2C); -} - -static int bttv_bit_getscl(void *data) -{ - struct bttv *btv = (struct bttv*)data; - int state; - - state = btread(BT848_I2C) & 0x02 ? 1 : 0; - return state; -} - -static int bttv_bit_getsda(void *data) -{ - struct bttv *btv = (struct bttv*)data; - int state; - - state = btread(BT848_I2C) & 0x01; - return state; -} - -static struct i2c_algo_bit_data bttv_i2c_algo_bit_template = { - .setsda = bttv_bit_setsda, - .setscl = bttv_bit_setscl, - .getsda = bttv_bit_getsda, - .getscl = bttv_bit_getscl, - .udelay = 16, - .mdelay = 10, - .timeout = 200, -}; - -static struct i2c_adapter bttv_i2c_adap_sw_template = { - .owner = THIS_MODULE, - .class = I2C_CLASS_TV_ANALOG, - .name = "bttv", - .id = I2C_HW_B_BT848, - .client_register = attach_inform, -}; - -/* ----------------------------------------------------------------------- */ -/* I2C functions - hardware i2c */ - -static int algo_control(struct i2c_adapter *adapter, - unsigned int cmd, unsigned long arg) -{ - return 0; -} - -static u32 functionality(struct i2c_adapter *adap) -{ - return I2C_FUNC_SMBUS_EMUL; -} - -static int -bttv_i2c_wait_done(struct bttv *btv) -{ - int rc = 0; - - /* timeout */ - if (wait_event_interruptible_timeout(btv->i2c_queue, - btv->i2c_done, msecs_to_jiffies(85)) == -ERESTARTSYS) - - rc = -EIO; - - if (btv->i2c_done & BT848_INT_RACK) - rc = 1; - btv->i2c_done = 0; - return rc; -} - -#define I2C_HW (BT878_I2C_MODE | BT848_I2C_SYNC |\ - BT848_I2C_SCL | BT848_I2C_SDA) - -static int -bttv_i2c_sendbytes(struct bttv *btv, const struct i2c_msg *msg, int last) -{ - u32 xmit; - int retval,cnt; - - /* sanity checks */ - if (0 == msg->len) - return -EINVAL; - - /* start, address + first byte */ - xmit = (msg->addr << 25) | (msg->buf[0] << 16) | I2C_HW; - if (msg->len > 1 || !last) - xmit |= BT878_I2C_NOSTOP; - btwrite(xmit, BT848_I2C); - retval = bttv_i2c_wait_done(btv); - if (retval < 0) - goto err; - if (retval == 0) - goto eio; - if (i2c_debug) { - printk(" <W %02x %02x", msg->addr << 1, msg->buf[0]); - if (!(xmit & BT878_I2C_NOSTOP)) - printk(" >\n"); - } - - for (cnt = 1; cnt < msg->len; cnt++ ) { - /* following bytes */ - xmit = (msg->buf[cnt] << 24) | I2C_HW | BT878_I2C_NOSTART; - if (cnt < msg->len-1 || !last) - xmit |= BT878_I2C_NOSTOP; - btwrite(xmit, BT848_I2C); - retval = bttv_i2c_wait_done(btv); - if (retval < 0) - goto err; - if (retval == 0) - goto eio; - if (i2c_debug) { - printk(" %02x", msg->buf[cnt]); - if (!(xmit & BT878_I2C_NOSTOP)) - printk(" >\n"); - } - } - return msg->len; - - eio: - retval = -EIO; - err: - if (i2c_debug) - printk(" ERR: %d\n",retval); - return retval; -} - -static int -bttv_i2c_readbytes(struct bttv *btv, const struct i2c_msg *msg, int last) -{ - u32 xmit; - u32 cnt; - int retval; - - for(cnt = 0; cnt < msg->len; cnt++) { - xmit = (msg->addr << 25) | (1 << 24) | I2C_HW; - if (cnt < msg->len-1) - xmit |= BT848_I2C_W3B; - if (cnt < msg->len-1 || !last) - xmit |= BT878_I2C_NOSTOP; - if (cnt) - xmit |= BT878_I2C_NOSTART; - btwrite(xmit, BT848_I2C); - retval = bttv_i2c_wait_done(btv); - if (retval < 0) - goto err; - if (retval == 0) - goto eio; - msg->buf[cnt] = ((u32)btread(BT848_I2C) >> 8) & 0xff; - if (i2c_debug) { - if (!(xmit & BT878_I2C_NOSTART)) - printk(" <R %02x", (msg->addr << 1) +1); - printk(" =%02x", msg->buf[cnt]); - if (!(xmit & BT878_I2C_NOSTOP)) - printk(" >\n"); - } - } - return msg->len; - - eio: - retval = -EIO; - err: - if (i2c_debug) - printk(" ERR: %d\n",retval); - return retval; -} - -static int bttv_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) -{ - struct bttv *btv = i2c_get_adapdata(i2c_adap); - int retval = 0; - int i; - - if (i2c_debug) - printk("bt-i2c:"); - btwrite(BT848_INT_I2CDONE|BT848_INT_RACK, BT848_INT_STAT); - for (i = 0 ; i < num; i++) { - if (msgs[i].flags & I2C_M_RD) { - /* read */ - retval = bttv_i2c_readbytes(btv, &msgs[i], i+1 == num); - if (retval < 0) - goto err; - } else { - /* write */ - retval = bttv_i2c_sendbytes(btv, &msgs[i], i+1 == num); - if (retval < 0) - goto err; - } - } - return num; - - err: - return retval; -} - -static struct i2c_algorithm bttv_algo = { - .master_xfer = bttv_i2c_xfer, - .algo_control = algo_control, - .functionality = functionality, -}; - -static struct i2c_adapter bttv_i2c_adap_hw_template = { - .owner = THIS_MODULE, - .class = I2C_CLASS_TV_ANALOG, - .name = "bt878", - .id = I2C_HW_B_BT848 /* FIXME */, - .algo = &bttv_algo, - .client_register = attach_inform, -}; - -/* ----------------------------------------------------------------------- */ -/* I2C functions - common stuff */ - -static int attach_inform(struct i2c_client *client) -{ - struct bttv *btv = i2c_get_adapdata(client->adapter); - int addr=ADDR_UNSET; - - - if (ADDR_UNSET != bttv_tvcards[btv->c.type].tuner_addr) - addr = bttv_tvcards[btv->c.type].tuner_addr; - - - if (bttv_debug) - printk(KERN_DEBUG "bttv%d: %s i2c attach [addr=0x%x,client=%s]\n", - btv->c.nr, client->driver->driver.name, client->addr, - client->name); - if (!client->driver->command) - return 0; - - if (btv->tuner_type != UNSET) { - struct tuner_setup tun_setup; - - if ((addr==ADDR_UNSET) || - (addr==client->addr)) { - - tun_setup.mode_mask = T_ANALOG_TV | T_DIGITAL_TV | T_RADIO; - tun_setup.type = btv->tuner_type; - tun_setup.addr = addr; - bttv_call_i2c_clients(btv, TUNER_SET_TYPE_ADDR, &tun_setup); - } - - } - - return 0; -} - -void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg) -{ - if (0 != btv->i2c_rc) - return; - i2c_clients_command(&btv->c.i2c_adap, cmd, arg); -} - -static struct i2c_client bttv_i2c_client_template = { - .name = "bttv internal", -}; - - -/* read I2C */ -int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for) -{ - unsigned char buffer = 0; - - if (0 != btv->i2c_rc) - return -1; - if (bttv_verbose && NULL != probe_for) - printk(KERN_INFO "bttv%d: i2c: checking for %s @ 0x%02x... ", - btv->c.nr,probe_for,addr); - btv->i2c_client.addr = addr >> 1; - if (1 != i2c_master_recv(&btv->i2c_client, &buffer, 1)) { - if (NULL != probe_for) { - if (bttv_verbose) - printk("not found\n"); - } else - printk(KERN_WARNING "bttv%d: i2c read 0x%x: error\n", - btv->c.nr,addr); - return -1; - } - if (bttv_verbose && NULL != probe_for) - printk("found\n"); - return buffer; -} - -/* write I2C */ -int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1, - unsigned char b2, int both) -{ - unsigned char buffer[2]; - int bytes = both ? 2 : 1; - - if (0 != btv->i2c_rc) - return -1; - btv->i2c_client.addr = addr >> 1; - buffer[0] = b1; - buffer[1] = b2; - if (bytes != i2c_master_send(&btv->i2c_client, buffer, bytes)) - return -1; - return 0; -} - -/* read EEPROM content */ -void __devinit bttv_readee(struct bttv *btv, unsigned char *eedata, int addr) -{ - memset(eedata, 0, 256); - if (0 != btv->i2c_rc) - return; - btv->i2c_client.addr = addr >> 1; - tveeprom_read(&btv->i2c_client, eedata, 256); -} - -static char *i2c_devs[128] = { - [ 0x1c >> 1 ] = "lgdt330x", - [ 0x30 >> 1 ] = "IR (hauppauge)", - [ 0x80 >> 1 ] = "msp34xx", - [ 0x86 >> 1 ] = "tda9887", - [ 0xa0 >> 1 ] = "eeprom", - [ 0xc0 >> 1 ] = "tuner (analog)", - [ 0xc2 >> 1 ] = "tuner (analog)", -}; - -static void do_i2c_scan(char *name, struct i2c_client *c) -{ - unsigned char buf; - int i,rc; - - for (i = 0; i < 128; i++) { - c->addr = i; - rc = i2c_master_recv(c,&buf,0); - if (rc < 0) - continue; - printk("%s: i2c scan: found device @ 0x%x [%s]\n", - name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???"); - } -} - -/* init + register i2c algo-bit adapter */ -int __devinit init_bttv_i2c(struct bttv *btv) -{ - memcpy(&btv->i2c_client, &bttv_i2c_client_template, - sizeof(bttv_i2c_client_template)); - - if (i2c_hw) - btv->use_i2c_hw = 1; - if (btv->use_i2c_hw) { - /* bt878 */ - memcpy(&btv->c.i2c_adap, &bttv_i2c_adap_hw_template, - sizeof(bttv_i2c_adap_hw_template)); - } else { - /* bt848 */ - memcpy(&btv->c.i2c_adap, &bttv_i2c_adap_sw_template, - sizeof(bttv_i2c_adap_sw_template)); - memcpy(&btv->i2c_algo, &bttv_i2c_algo_bit_template, - sizeof(bttv_i2c_algo_bit_template)); - btv->i2c_algo.data = btv; - btv->c.i2c_adap.algo_data = &btv->i2c_algo; - } - - btv->c.i2c_adap.dev.parent = &btv->c.pci->dev; - snprintf(btv->c.i2c_adap.name, sizeof(btv->c.i2c_adap.name), - "bt%d #%d [%s]", btv->id, btv->c.nr, - btv->use_i2c_hw ? "hw" : "sw"); - - i2c_set_adapdata(&btv->c.i2c_adap, btv); - btv->i2c_client.adapter = &btv->c.i2c_adap; - - if (bttv_tvcards[btv->c.type].no_video) - btv->c.i2c_adap.class &= ~I2C_CLASS_TV_ANALOG; - if (bttv_tvcards[btv->c.type].has_dvb) - btv->c.i2c_adap.class |= I2C_CLASS_TV_DIGITAL; - - if (btv->use_i2c_hw) { - btv->i2c_rc = i2c_add_adapter(&btv->c.i2c_adap); - } else { - bttv_bit_setscl(btv,1); - bttv_bit_setsda(btv,1); - btv->i2c_rc = i2c_bit_add_bus(&btv->c.i2c_adap); - } - if (0 == btv->i2c_rc && i2c_scan) - do_i2c_scan(btv->c.name,&btv->i2c_client); - return btv->i2c_rc; -} - -int __devexit fini_bttv_i2c(struct bttv *btv) -{ - if (0 != btv->i2c_rc) - return 0; - - if (btv->use_i2c_hw) { - return i2c_del_adapter(&btv->c.i2c_adap); - } else { - return i2c_bit_del_bus(&btv->c.i2c_adap); - } -} - -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |