diff options
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-i2c-core.c')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-i2c-core.c | 698 |
1 files changed, 0 insertions, 698 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c b/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c deleted file mode 100644 index 885ce11f222d..000000000000 --- a/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c +++ /dev/null @@ -1,698 +0,0 @@ -/* - * - * - * Copyright (C) 2005 Mike Isely <isely@pobox.com> - * - * 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 - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/i2c.h> -#include <linux/module.h> -#include <media/ir-kbd-i2c.h> -#include "pvrusb2-i2c-core.h" -#include "pvrusb2-hdw-internal.h" -#include "pvrusb2-debug.h" -#include "pvrusb2-fx2-cmd.h" -#include "pvrusb2.h" - -#define trace_i2c(...) pvr2_trace(PVR2_TRACE_I2C,__VA_ARGS__) - -/* - - This module attempts to implement a compliant I2C adapter for the pvrusb2 - device. - -*/ - -static unsigned int i2c_scan; -module_param(i2c_scan, int, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time"); - -static int ir_mode[PVR_NUM] = { [0 ... PVR_NUM-1] = 1 }; -module_param_array(ir_mode, int, NULL, 0444); -MODULE_PARM_DESC(ir_mode,"specify: 0=disable IR reception, 1=normal IR"); - -static int pvr2_disable_ir_video; -module_param_named(disable_autoload_ir_video, pvr2_disable_ir_video, - int, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(disable_autoload_ir_video, - "1=do not try to autoload ir_video IR receiver"); - -static int pvr2_i2c_write(struct pvr2_hdw *hdw, /* Context */ - u8 i2c_addr, /* I2C address we're talking to */ - u8 *data, /* Data to write */ - u16 length) /* Size of data to write */ -{ - /* Return value - default 0 means success */ - int ret; - - - if (!data) length = 0; - if (length > (sizeof(hdw->cmd_buffer) - 3)) { - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "Killing an I2C write to %u that is too large" - " (desired=%u limit=%u)", - i2c_addr, - length,(unsigned int)(sizeof(hdw->cmd_buffer) - 3)); - return -ENOTSUPP; - } - - LOCK_TAKE(hdw->ctl_lock); - - /* Clear the command buffer (likely to be paranoia) */ - memset(hdw->cmd_buffer, 0, sizeof(hdw->cmd_buffer)); - - /* Set up command buffer for an I2C write */ - hdw->cmd_buffer[0] = FX2CMD_I2C_WRITE; /* write prefix */ - hdw->cmd_buffer[1] = i2c_addr; /* i2c addr of chip */ - hdw->cmd_buffer[2] = length; /* length of what follows */ - if (length) memcpy(hdw->cmd_buffer + 3, data, length); - - /* Do the operation */ - ret = pvr2_send_request(hdw, - hdw->cmd_buffer, - length + 3, - hdw->cmd_buffer, - 1); - if (!ret) { - if (hdw->cmd_buffer[0] != 8) { - ret = -EIO; - if (hdw->cmd_buffer[0] != 7) { - trace_i2c("unexpected status" - " from i2_write[%d]: %d", - i2c_addr,hdw->cmd_buffer[0]); - } - } - } - - LOCK_GIVE(hdw->ctl_lock); - - return ret; -} - -static int pvr2_i2c_read(struct pvr2_hdw *hdw, /* Context */ - u8 i2c_addr, /* I2C address we're talking to */ - u8 *data, /* Data to write */ - u16 dlen, /* Size of data to write */ - u8 *res, /* Where to put data we read */ - u16 rlen) /* Amount of data to read */ -{ - /* Return value - default 0 means success */ - int ret; - - - if (!data) dlen = 0; - if (dlen > (sizeof(hdw->cmd_buffer) - 4)) { - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "Killing an I2C read to %u that has wlen too large" - " (desired=%u limit=%u)", - i2c_addr, - dlen,(unsigned int)(sizeof(hdw->cmd_buffer) - 4)); - return -ENOTSUPP; - } - if (res && (rlen > (sizeof(hdw->cmd_buffer) - 1))) { - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "Killing an I2C read to %u that has rlen too large" - " (desired=%u limit=%u)", - i2c_addr, - rlen,(unsigned int)(sizeof(hdw->cmd_buffer) - 1)); - return -ENOTSUPP; - } - - LOCK_TAKE(hdw->ctl_lock); - - /* Clear the command buffer (likely to be paranoia) */ - memset(hdw->cmd_buffer, 0, sizeof(hdw->cmd_buffer)); - - /* Set up command buffer for an I2C write followed by a read */ - hdw->cmd_buffer[0] = FX2CMD_I2C_READ; /* read prefix */ - hdw->cmd_buffer[1] = dlen; /* arg length */ - hdw->cmd_buffer[2] = rlen; /* answer length. Device will send one - more byte (status). */ - hdw->cmd_buffer[3] = i2c_addr; /* i2c addr of chip */ - if (dlen) memcpy(hdw->cmd_buffer + 4, data, dlen); - - /* Do the operation */ - ret = pvr2_send_request(hdw, - hdw->cmd_buffer, - 4 + dlen, - hdw->cmd_buffer, - rlen + 1); - if (!ret) { - if (hdw->cmd_buffer[0] != 8) { - ret = -EIO; - if (hdw->cmd_buffer[0] != 7) { - trace_i2c("unexpected status" - " from i2_read[%d]: %d", - i2c_addr,hdw->cmd_buffer[0]); - } - } - } - - /* Copy back the result */ - if (res && rlen) { - if (ret) { - /* Error, just blank out the return buffer */ - memset(res, 0, rlen); - } else { - memcpy(res, hdw->cmd_buffer + 1, rlen); - } - } - - LOCK_GIVE(hdw->ctl_lock); - - return ret; -} - -/* This is the common low level entry point for doing I2C operations to the - hardware. */ -static int pvr2_i2c_basic_op(struct pvr2_hdw *hdw, - u8 i2c_addr, - u8 *wdata, - u16 wlen, - u8 *rdata, - u16 rlen) -{ - if (!rdata) rlen = 0; - if (!wdata) wlen = 0; - if (rlen || !wlen) { - return pvr2_i2c_read(hdw,i2c_addr,wdata,wlen,rdata,rlen); - } else { - return pvr2_i2c_write(hdw,i2c_addr,wdata,wlen); - } -} - - -/* This is a special entry point for cases of I2C transaction attempts to - the IR receiver. The implementation here simulates the IR receiver by - issuing a command to the FX2 firmware and using that response to return - what the real I2C receiver would have returned. We use this for 24xxx - devices, where the IR receiver chip has been removed and replaced with - FX2 related logic. */ -static int i2c_24xxx_ir(struct pvr2_hdw *hdw, - u8 i2c_addr,u8 *wdata,u16 wlen,u8 *rdata,u16 rlen) -{ - u8 dat[4]; - unsigned int stat; - - if (!(rlen || wlen)) { - /* This is a probe attempt. Just let it succeed. */ - return 0; - } - - /* We don't understand this kind of transaction */ - if ((wlen != 0) || (rlen == 0)) return -EIO; - - if (rlen < 3) { - /* Mike Isely <isely@pobox.com> Appears to be a probe - attempt from lirc. Just fill in zeroes and return. If - we try instead to do the full transaction here, then bad - things seem to happen within the lirc driver module - (version 0.8.0-7 sources from Debian, when run under - vanilla 2.6.17.6 kernel) - and I don't have the patience - to chase it down. */ - if (rlen > 0) rdata[0] = 0; - if (rlen > 1) rdata[1] = 0; - return 0; - } - - /* Issue a command to the FX2 to read the IR receiver. */ - LOCK_TAKE(hdw->ctl_lock); do { - hdw->cmd_buffer[0] = FX2CMD_GET_IR_CODE; - stat = pvr2_send_request(hdw, - hdw->cmd_buffer,1, - hdw->cmd_buffer,4); - dat[0] = hdw->cmd_buffer[0]; - dat[1] = hdw->cmd_buffer[1]; - dat[2] = hdw->cmd_buffer[2]; - dat[3] = hdw->cmd_buffer[3]; - } while (0); LOCK_GIVE(hdw->ctl_lock); - - /* Give up if that operation failed. */ - if (stat != 0) return stat; - - /* Mangle the results into something that looks like the real IR - receiver. */ - rdata[2] = 0xc1; - if (dat[0] != 1) { - /* No code received. */ - rdata[0] = 0; - rdata[1] = 0; - } else { - u16 val; - /* Mash the FX2 firmware-provided IR code into something - that the normal i2c chip-level driver expects. */ - val = dat[1]; - val <<= 8; - val |= dat[2]; - val >>= 1; - val &= ~0x0003; - val |= 0x8000; - rdata[0] = (val >> 8) & 0xffu; - rdata[1] = val & 0xffu; - } - - return 0; -} - -/* This is a special entry point that is entered if an I2C operation is - attempted to a wm8775 chip on model 24xxx hardware. Autodetect of this - part doesn't work, but we know it is really there. So let's look for - the autodetect attempt and just return success if we see that. */ -static int i2c_hack_wm8775(struct pvr2_hdw *hdw, - u8 i2c_addr,u8 *wdata,u16 wlen,u8 *rdata,u16 rlen) -{ - if (!(rlen || wlen)) { - // This is a probe attempt. Just let it succeed. - return 0; - } - return pvr2_i2c_basic_op(hdw,i2c_addr,wdata,wlen,rdata,rlen); -} - -/* This is an entry point designed to always fail any attempt to perform a - transfer. We use this to cause certain I2C addresses to not be - probed. */ -static int i2c_black_hole(struct pvr2_hdw *hdw, - u8 i2c_addr,u8 *wdata,u16 wlen,u8 *rdata,u16 rlen) -{ - return -EIO; -} - -/* This is a special entry point that is entered if an I2C operation is - attempted to a cx25840 chip on model 24xxx hardware. This chip can - sometimes wedge itself. Worse still, when this happens msp3400 can - falsely detect this part and then the system gets hosed up after msp3400 - gets confused and dies. What we want to do here is try to keep msp3400 - away and also try to notice if the chip is wedged and send a warning to - the system log. */ -static int i2c_hack_cx25840(struct pvr2_hdw *hdw, - u8 i2c_addr,u8 *wdata,u16 wlen,u8 *rdata,u16 rlen) -{ - int ret; - unsigned int subaddr; - u8 wbuf[2]; - int state = hdw->i2c_cx25840_hack_state; - - if (!(rlen || wlen)) { - // Probe attempt - always just succeed and don't bother the - // hardware (this helps to make the state machine further - // down somewhat easier). - return 0; - } - - if (state == 3) { - return pvr2_i2c_basic_op(hdw,i2c_addr,wdata,wlen,rdata,rlen); - } - - /* We're looking for the exact pattern where the revision register - is being read. The cx25840 module will always look at the - revision register first. Any other pattern of access therefore - has to be a probe attempt from somebody else so we'll reject it. - Normally we could just let each client just probe the part - anyway, but when the cx25840 is wedged, msp3400 will get a false - positive and that just screws things up... */ - - if (wlen == 0) { - switch (state) { - case 1: subaddr = 0x0100; break; - case 2: subaddr = 0x0101; break; - default: goto fail; - } - } else if (wlen == 2) { - subaddr = (wdata[0] << 8) | wdata[1]; - switch (subaddr) { - case 0x0100: state = 1; break; - case 0x0101: state = 2; break; - default: goto fail; - } - } else { - goto fail; - } - if (!rlen) goto success; - state = 0; - if (rlen != 1) goto fail; - - /* If we get to here then we have a legitimate read for one of the - two revision bytes, so pass it through. */ - wbuf[0] = subaddr >> 8; - wbuf[1] = subaddr; - ret = pvr2_i2c_basic_op(hdw,i2c_addr,wbuf,2,rdata,rlen); - - if ((ret != 0) || (*rdata == 0x04) || (*rdata == 0x0a)) { - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "WARNING: Detected a wedged cx25840 chip;" - " the device will not work."); - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "WARNING: Try power cycling the pvrusb2 device."); - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "WARNING: Disabling further access to the device" - " to prevent other foul-ups."); - // This blocks all further communication with the part. - hdw->i2c_func[0x44] = NULL; - pvr2_hdw_render_useless(hdw); - goto fail; - } - - /* Success! */ - pvr2_trace(PVR2_TRACE_CHIPS,"cx25840 appears to be OK."); - state = 3; - - success: - hdw->i2c_cx25840_hack_state = state; - return 0; - - fail: - hdw->i2c_cx25840_hack_state = state; - return -EIO; -} - -/* This is a very, very limited I2C adapter implementation. We can only - support what we actually know will work on the device... */ -static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap, - struct i2c_msg msgs[], - int num) -{ - int ret = -ENOTSUPP; - pvr2_i2c_func funcp = NULL; - struct pvr2_hdw *hdw = (struct pvr2_hdw *)(i2c_adap->algo_data); - - if (!num) { - ret = -EINVAL; - goto done; - } - if (msgs[0].addr < PVR2_I2C_FUNC_CNT) { - funcp = hdw->i2c_func[msgs[0].addr]; - } - if (!funcp) { - ret = -EIO; - goto done; - } - - if (num == 1) { - if (msgs[0].flags & I2C_M_RD) { - /* Simple read */ - u16 tcnt,bcnt,offs; - if (!msgs[0].len) { - /* Length == 0 read. This is a probe. */ - if (funcp(hdw,msgs[0].addr,NULL,0,NULL,0)) { - ret = -EIO; - goto done; - } - ret = 1; - goto done; - } - /* If the read is short enough we'll do the whole - thing atomically. Otherwise we have no choice - but to break apart the reads. */ - tcnt = msgs[0].len; - offs = 0; - while (tcnt) { - bcnt = tcnt; - if (bcnt > sizeof(hdw->cmd_buffer)-1) { - bcnt = sizeof(hdw->cmd_buffer)-1; - } - if (funcp(hdw,msgs[0].addr,NULL,0, - msgs[0].buf+offs,bcnt)) { - ret = -EIO; - goto done; - } - offs += bcnt; - tcnt -= bcnt; - } - ret = 1; - goto done; - } else { - /* Simple write */ - ret = 1; - if (funcp(hdw,msgs[0].addr, - msgs[0].buf,msgs[0].len,NULL,0)) { - ret = -EIO; - } - goto done; - } - } else if (num == 2) { - if (msgs[0].addr != msgs[1].addr) { - trace_i2c("i2c refusing 2 phase transfer with" - " conflicting target addresses"); - ret = -ENOTSUPP; - goto done; - } - if ((!((msgs[0].flags & I2C_M_RD))) && - (msgs[1].flags & I2C_M_RD)) { - u16 tcnt,bcnt,wcnt,offs; - /* Write followed by atomic read. If the read - portion is short enough we'll do the whole thing - atomically. Otherwise we have no choice but to - break apart the reads. */ - tcnt = msgs[1].len; - wcnt = msgs[0].len; - offs = 0; - while (tcnt || wcnt) { - bcnt = tcnt; - if (bcnt > sizeof(hdw->cmd_buffer)-1) { - bcnt = sizeof(hdw->cmd_buffer)-1; - } - if (funcp(hdw,msgs[0].addr, - msgs[0].buf,wcnt, - msgs[1].buf+offs,bcnt)) { - ret = -EIO; - goto done; - } - offs += bcnt; - tcnt -= bcnt; - wcnt = 0; - } - ret = 2; - goto done; - } else { - trace_i2c("i2c refusing complex transfer" - " read0=%d read1=%d", - (msgs[0].flags & I2C_M_RD), - (msgs[1].flags & I2C_M_RD)); - } - } else { - trace_i2c("i2c refusing %d phase transfer",num); - } - - done: - if (pvrusb2_debug & PVR2_TRACE_I2C_TRAF) { - unsigned int idx,offs,cnt; - for (idx = 0; idx < num; idx++) { - cnt = msgs[idx].len; - printk(KERN_INFO - "pvrusb2 i2c xfer %u/%u:" - " addr=0x%x len=%d %s", - idx+1,num, - msgs[idx].addr, - cnt, - (msgs[idx].flags & I2C_M_RD ? - "read" : "write")); - if ((ret > 0) || !(msgs[idx].flags & I2C_M_RD)) { - if (cnt > 8) cnt = 8; - printk(" ["); - for (offs = 0; offs < (cnt>8?8:cnt); offs++) { - if (offs) printk(" "); - printk("%02x",msgs[idx].buf[offs]); - } - if (offs < cnt) printk(" ..."); - printk("]"); - } - if (idx+1 == num) { - printk(" result=%d",ret); - } - printk("\n"); - } - if (!num) { - printk(KERN_INFO - "pvrusb2 i2c xfer null transfer result=%d\n", - ret); - } - } - return ret; -} - -static u32 pvr2_i2c_functionality(struct i2c_adapter *adap) -{ - return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_I2C; -} - -static struct i2c_algorithm pvr2_i2c_algo_template = { - .master_xfer = pvr2_i2c_xfer, - .functionality = pvr2_i2c_functionality, -}; - -static struct i2c_adapter pvr2_i2c_adap_template = { - .owner = THIS_MODULE, - .class = 0, -}; - - -/* Return true if device exists at given address */ -static int do_i2c_probe(struct pvr2_hdw *hdw, int addr) -{ - struct i2c_msg msg[1]; - int rc; - msg[0].addr = 0; - msg[0].flags = I2C_M_RD; - msg[0].len = 0; - msg[0].buf = NULL; - msg[0].addr = addr; - rc = i2c_transfer(&hdw->i2c_adap, msg, ARRAY_SIZE(msg)); - return rc == 1; -} - -static void do_i2c_scan(struct pvr2_hdw *hdw) -{ - int i; - printk(KERN_INFO "%s: i2c scan beginning\n", hdw->name); - for (i = 0; i < 128; i++) { - if (do_i2c_probe(hdw, i)) { - printk(KERN_INFO "%s: i2c scan: found device @ 0x%x\n", - hdw->name, i); - } - } - printk(KERN_INFO "%s: i2c scan done.\n", hdw->name); -} - -static void pvr2_i2c_register_ir(struct pvr2_hdw *hdw) -{ - struct i2c_board_info info; - struct IR_i2c_init_data *init_data = &hdw->ir_init_data; - if (pvr2_disable_ir_video) { - pvr2_trace(PVR2_TRACE_INFO, - "Automatic binding of ir_video has been disabled."); - return; - } - memset(&info, 0, sizeof(struct i2c_board_info)); - switch (hdw->ir_scheme_active) { - case PVR2_IR_SCHEME_24XXX: /* FX2-controlled IR */ - case PVR2_IR_SCHEME_29XXX: /* Original 29xxx device */ - init_data->ir_codes = RC_MAP_HAUPPAUGE; - init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP; - init_data->type = RC_TYPE_RC5; - init_data->name = hdw->hdw_desc->description; - init_data->polling_interval = 100; /* ms From ir-kbd-i2c */ - /* IR Receiver */ - info.addr = 0x18; - info.platform_data = init_data; - strlcpy(info.type, "ir_video", I2C_NAME_SIZE); - pvr2_trace(PVR2_TRACE_INFO, "Binding %s to i2c address 0x%02x.", - info.type, info.addr); - i2c_new_device(&hdw->i2c_adap, &info); - break; - case PVR2_IR_SCHEME_ZILOG: /* HVR-1950 style */ - case PVR2_IR_SCHEME_24XXX_MCE: /* 24xxx MCE device */ - init_data->ir_codes = RC_MAP_HAUPPAUGE; - init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR; - init_data->type = RC_TYPE_RC5; - init_data->name = hdw->hdw_desc->description; - /* IR Receiver */ - info.addr = 0x71; - info.platform_data = init_data; - strlcpy(info.type, "ir_rx_z8f0811_haup", I2C_NAME_SIZE); - pvr2_trace(PVR2_TRACE_INFO, "Binding %s to i2c address 0x%02x.", - info.type, info.addr); - i2c_new_device(&hdw->i2c_adap, &info); - /* IR Trasmitter */ - info.addr = 0x70; - info.platform_data = init_data; - strlcpy(info.type, "ir_tx_z8f0811_haup", I2C_NAME_SIZE); - pvr2_trace(PVR2_TRACE_INFO, "Binding %s to i2c address 0x%02x.", - info.type, info.addr); - i2c_new_device(&hdw->i2c_adap, &info); - break; - default: - /* The device either doesn't support I2C-based IR or we - don't know (yet) how to operate IR on the device. */ - break; - } -} - -void pvr2_i2c_core_init(struct pvr2_hdw *hdw) -{ - unsigned int idx; - - /* The default action for all possible I2C addresses is just to do - the transfer normally. */ - for (idx = 0; idx < PVR2_I2C_FUNC_CNT; idx++) { - hdw->i2c_func[idx] = pvr2_i2c_basic_op; - } - - /* However, deal with various special cases for 24xxx hardware. */ - if (ir_mode[hdw->unit_number] == 0) { - printk(KERN_INFO "%s: IR disabled\n",hdw->name); - hdw->i2c_func[0x18] = i2c_black_hole; - } else if (ir_mode[hdw->unit_number] == 1) { - if (hdw->ir_scheme_active == PVR2_IR_SCHEME_24XXX) { - /* Set up translation so that our IR looks like a - 29xxx device */ - hdw->i2c_func[0x18] = i2c_24xxx_ir; - } - } - if (hdw->hdw_desc->flag_has_cx25840) { - hdw->i2c_func[0x44] = i2c_hack_cx25840; - } - if (hdw->hdw_desc->flag_has_wm8775) { - hdw->i2c_func[0x1b] = i2c_hack_wm8775; - } - - // Configure the adapter and set up everything else related to it. - memcpy(&hdw->i2c_adap,&pvr2_i2c_adap_template,sizeof(hdw->i2c_adap)); - memcpy(&hdw->i2c_algo,&pvr2_i2c_algo_template,sizeof(hdw->i2c_algo)); - strlcpy(hdw->i2c_adap.name,hdw->name,sizeof(hdw->i2c_adap.name)); - hdw->i2c_adap.dev.parent = &hdw->usb_dev->dev; - hdw->i2c_adap.algo = &hdw->i2c_algo; - hdw->i2c_adap.algo_data = hdw; - hdw->i2c_linked = !0; - i2c_set_adapdata(&hdw->i2c_adap, &hdw->v4l2_dev); - i2c_add_adapter(&hdw->i2c_adap); - if (hdw->i2c_func[0x18] == i2c_24xxx_ir) { - /* Probe for a different type of IR receiver on this - device. This is really the only way to differentiate - older 24xxx devices from 24xxx variants that include an - IR blaster. If the IR blaster is present, the IR - receiver is part of that chip and thus we must disable - the emulated IR receiver. */ - if (do_i2c_probe(hdw, 0x71)) { - pvr2_trace(PVR2_TRACE_INFO, - "Device has newer IR hardware;" - " disabling unneeded virtual IR device"); - hdw->i2c_func[0x18] = NULL; - /* Remember that this is a different device... */ - hdw->ir_scheme_active = PVR2_IR_SCHEME_24XXX_MCE; - } - } - if (i2c_scan) do_i2c_scan(hdw); - - pvr2_i2c_register_ir(hdw); -} - -void pvr2_i2c_core_done(struct pvr2_hdw *hdw) -{ - if (hdw->i2c_linked) { - i2c_del_adapter(&hdw->i2c_adap); - hdw->i2c_linked = 0; - } -} - -/* - Stuff for Emacs to see, in order to encourage consistent editing style: - *** Local Variables: *** - *** mode: c *** - *** fill-column: 75 *** - *** tab-width: 8 *** - *** c-basic-offset: 8 *** - *** End: *** - */ |