diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-28 09:35:11 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-28 09:35:11 -0700 |
commit | 0851668fdd97e526b2a41f794b785c204dd3d3e0 (patch) | |
tree | 4ef7c20a8be8393006c6fe9627eb29dd30877d61 /drivers/media/common/tuners/tda18271-common.c | |
parent | 00ebb6382b8d9c7c15b5f8ad230670d8161d38dd (diff) | |
parent | 7655e594945289b418af39f6669fea4666a7b520 (diff) |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (505 commits)
[media] af9015: Fix max I2C message size when used with tda18271
[media] IR: initialize ir_raw_event in few more drivers
[media] Guard a divide in v4l1 compat layer
[media] imon: fix nomouse modprobe option
[media] imon: remove redundant change_protocol call
[media] imon: fix my egregious brown paper bag w/rdev/idev split
[media] cafe_ccic: Configure ov7670 correctly
[media] ov7670: allow configuration of image size, clock speed, and I/O method
[media] af9015: support for DigitalNow TinyTwin v3 [1f4d:9016]
[media] af9015: map DigitalNow TinyTwin v2 remote
[media] DigitalNow TinyTwin remote controller
[media] af9015: RC fixes and improvements
videodev2.h.xml: Update to reflect the latest changes at videodev2.h
[media] v4l: document new Bayer and monochrome pixel formats
[media] DocBook/v4l: Add missing formats used on gspca cpia1 and sn9c2028
[media] firedtv: add parameter to fake ca_system_ids in CA_INFO
[media] tm6000: fix a macro coding style issue
tm6000: Remove some ugly debug code
[media] Nova-S-Plus audio line input
[media] [RFC,1/1] V4L2: Use new CAP bits in existing RDS capable drivers
...
Diffstat (limited to 'drivers/media/common/tuners/tda18271-common.c')
-rw-r--r-- | drivers/media/common/tuners/tda18271-common.c | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/drivers/media/common/tuners/tda18271-common.c b/drivers/media/common/tuners/tda18271-common.c index e1f678281a58..5466d47db899 100644 --- a/drivers/media/common/tuners/tda18271-common.c +++ b/drivers/media/common/tuners/tda18271-common.c @@ -193,25 +193,51 @@ int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len) unsigned char *regs = priv->tda18271_regs; unsigned char buf[TDA18271_NUM_REGS + 1]; struct i2c_msg msg = { .addr = priv->i2c_props.addr, .flags = 0, - .buf = buf, .len = len + 1 }; - int i, ret; + .buf = buf }; + int i, ret = 1, max; BUG_ON((len == 0) || (idx + len > sizeof(buf))); - buf[0] = idx; - for (i = 1; i <= len; i++) - buf[i] = regs[idx - 1 + i]; + + switch (priv->small_i2c) { + case TDA18271_03_BYTE_CHUNK_INIT: + max = 3; + break; + case TDA18271_08_BYTE_CHUNK_INIT: + max = 8; + break; + case TDA18271_16_BYTE_CHUNK_INIT: + max = 16; + break; + case TDA18271_39_BYTE_CHUNK_INIT: + default: + max = 39; + } tda18271_i2c_gate_ctrl(fe, 1); + while (len) { + if (max > len) + max = len; + + buf[0] = idx; + for (i = 1; i <= max; i++) + buf[i] = regs[idx - 1 + i]; - /* write registers */ - ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); + msg.len = max + 1; + /* write registers */ + ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); + if (ret != 1) + break; + + idx += max; + len -= max; + } tda18271_i2c_gate_ctrl(fe, 0); if (ret != 1) tda_err("ERROR: idx = 0x%x, len = %d, " - "i2c_transfer returned: %d\n", idx, len, ret); + "i2c_transfer returned: %d\n", idx, max, ret); return (ret == 1 ? 0 : ret); } @@ -326,24 +352,7 @@ int tda18271_init_regs(struct dvb_frontend *fe) regs[R_EB22] = 0x48; regs[R_EB23] = 0xb0; - switch (priv->small_i2c) { - case TDA18271_08_BYTE_CHUNK_INIT: - tda18271_write_regs(fe, 0x00, 0x08); - tda18271_write_regs(fe, 0x08, 0x08); - tda18271_write_regs(fe, 0x10, 0x08); - tda18271_write_regs(fe, 0x18, 0x08); - tda18271_write_regs(fe, 0x20, 0x07); - break; - case TDA18271_16_BYTE_CHUNK_INIT: - tda18271_write_regs(fe, 0x00, 0x10); - tda18271_write_regs(fe, 0x10, 0x10); - tda18271_write_regs(fe, 0x20, 0x07); - break; - case TDA18271_39_BYTE_CHUNK_INIT: - default: - tda18271_write_regs(fe, 0x00, TDA18271_NUM_REGS); - break; - } + tda18271_write_regs(fe, 0x00, TDA18271_NUM_REGS); /* setup agc1 gain */ regs[R_EB17] = 0x00; |