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author | 2012-12-13 19:22:22 -0800 | |
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committer | 2012-12-13 19:22:22 -0800 | |
commit | d8c532c40721f7507896d202b8cae3b3642d2b0d (patch) | |
tree | 42b1ce76671eb85324281ed93491432f4523f983 /drivers/media/tuners/fc2580.c | |
parent | Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi (diff) | |
parent | Merge branch 'for_3.8-rc1' into v4l_for_linus (diff) | |
download | linux-dev-d8c532c40721f7507896d202b8cae3b3642d2b0d.tar.xz linux-dev-d8c532c40721f7507896d202b8cae3b3642d2b0d.zip |
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- Missing MAINTAINERS entries were added for several drivers
- Adds V4L2 support for DMABUF handling, allowing zero-copy buffer
sharing between V4L2 devices and GPU
- Got rid of all warnings when compiling with W=1 on x86
- Add a new driver for Exynos hardware (s3c-camif)
- Several bug fixes, cleanups and driver improvements
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (243 commits)
[media] omap3isp: Replace cpu_is_omap3630() with ISP revision check
[media] omap3isp: Prepare/unprepare clocks before/after enable/disable
[media] omap3isp: preview: Add support for 8-bit formats at the sink pad
[media] omap3isp: Replace printk with dev_*
[media] omap3isp: Find source pad from external entity
[media] omap3isp: Configure CSI-2 phy based on platform data
[media] omap3isp: Add PHY routing configuration
[media] omap3isp: Add CSI configuration registers from control block to ISP resources
[media] omap3isp: Remove unneeded module memory address definitions
[media] omap3isp: Use monotonic timestamps for statistics buffers
[media] uvcvideo: Fix control value clamping for unsigned integer controls
[media] uvcvideo: Mark first output terminal as default video node
[media] uvcvideo: Add VIDIOC_[GS]_PRIORITY support
[media] uvcvideo: Return -ENOTTY for unsupported ioctls
[media] uvcvideo: Set device_caps in VIDIOC_QUERYCAP
[media] uvcvideo: Don't fail when an unsupported format is requested
[media] uvcvideo: Return -EACCES when trying to access a read/write-only control
[media] uvcvideo: Set error_idx properly for extended controls API failures
[media] rtl28xxu: add NOXON DAB/DAB+ USB dongle rev 2
[media] fc2580: write some registers conditionally
...
Diffstat (limited to 'drivers/media/tuners/fc2580.c')
-rw-r--r-- | drivers/media/tuners/fc2580.c | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/drivers/media/tuners/fc2580.c b/drivers/media/tuners/fc2580.c index aff39ae457a0..81f38aae9c66 100644 --- a/drivers/media/tuners/fc2580.c +++ b/drivers/media/tuners/fc2580.c @@ -35,8 +35,6 @@ * Currently it blind writes bunch of static registers from the * fc2580_freq_regs_lut[] when fc2580_set_params() is called. Add some * logic to reduce unneeded register writes. - * There is also don't-care registers, initialized with value 0xff, and those - * are also written to the chip currently (yes, not wise). */ /* write multiple registers */ @@ -111,6 +109,17 @@ static int fc2580_rd_reg(struct fc2580_priv *priv, u8 reg, u8 *val) return fc2580_rd_regs(priv, reg, val, 1); } +/* write single register conditionally only when value differs from 0xff + * XXX: This is special routine meant only for writing fc2580_freq_regs_lut[] + * values. Do not use for the other purposes. */ +static int fc2580_wr_reg_ff(struct fc2580_priv *priv, u8 reg, u8 val) +{ + if (val == 0xff) + return 0; + else + return fc2580_wr_regs(priv, reg, &val, 1); +} + static int fc2580_set_params(struct dvb_frontend *fe) { struct fc2580_priv *priv = fe->tuner_priv; @@ -213,99 +222,99 @@ static int fc2580_set_params(struct dvb_frontend *fe) if (i == ARRAY_SIZE(fc2580_freq_regs_lut)) goto err; - ret = fc2580_wr_reg(priv, 0x25, fc2580_freq_regs_lut[i].r25_val); + ret = fc2580_wr_reg_ff(priv, 0x25, fc2580_freq_regs_lut[i].r25_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x27, fc2580_freq_regs_lut[i].r27_val); + ret = fc2580_wr_reg_ff(priv, 0x27, fc2580_freq_regs_lut[i].r27_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x28, fc2580_freq_regs_lut[i].r28_val); + ret = fc2580_wr_reg_ff(priv, 0x28, fc2580_freq_regs_lut[i].r28_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x29, fc2580_freq_regs_lut[i].r29_val); + ret = fc2580_wr_reg_ff(priv, 0x29, fc2580_freq_regs_lut[i].r29_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x2b, fc2580_freq_regs_lut[i].r2b_val); + ret = fc2580_wr_reg_ff(priv, 0x2b, fc2580_freq_regs_lut[i].r2b_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x2c, fc2580_freq_regs_lut[i].r2c_val); + ret = fc2580_wr_reg_ff(priv, 0x2c, fc2580_freq_regs_lut[i].r2c_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x2d, fc2580_freq_regs_lut[i].r2d_val); + ret = fc2580_wr_reg_ff(priv, 0x2d, fc2580_freq_regs_lut[i].r2d_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x30, fc2580_freq_regs_lut[i].r30_val); + ret = fc2580_wr_reg_ff(priv, 0x30, fc2580_freq_regs_lut[i].r30_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x44, fc2580_freq_regs_lut[i].r44_val); + ret = fc2580_wr_reg_ff(priv, 0x44, fc2580_freq_regs_lut[i].r44_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x50, fc2580_freq_regs_lut[i].r50_val); + ret = fc2580_wr_reg_ff(priv, 0x50, fc2580_freq_regs_lut[i].r50_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x53, fc2580_freq_regs_lut[i].r53_val); + ret = fc2580_wr_reg_ff(priv, 0x53, fc2580_freq_regs_lut[i].r53_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x5f, fc2580_freq_regs_lut[i].r5f_val); + ret = fc2580_wr_reg_ff(priv, 0x5f, fc2580_freq_regs_lut[i].r5f_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x61, fc2580_freq_regs_lut[i].r61_val); + ret = fc2580_wr_reg_ff(priv, 0x61, fc2580_freq_regs_lut[i].r61_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x62, fc2580_freq_regs_lut[i].r62_val); + ret = fc2580_wr_reg_ff(priv, 0x62, fc2580_freq_regs_lut[i].r62_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x63, fc2580_freq_regs_lut[i].r63_val); + ret = fc2580_wr_reg_ff(priv, 0x63, fc2580_freq_regs_lut[i].r63_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x67, fc2580_freq_regs_lut[i].r67_val); + ret = fc2580_wr_reg_ff(priv, 0x67, fc2580_freq_regs_lut[i].r67_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x68, fc2580_freq_regs_lut[i].r68_val); + ret = fc2580_wr_reg_ff(priv, 0x68, fc2580_freq_regs_lut[i].r68_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x69, fc2580_freq_regs_lut[i].r69_val); + ret = fc2580_wr_reg_ff(priv, 0x69, fc2580_freq_regs_lut[i].r69_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x6a, fc2580_freq_regs_lut[i].r6a_val); + ret = fc2580_wr_reg_ff(priv, 0x6a, fc2580_freq_regs_lut[i].r6a_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x6b, fc2580_freq_regs_lut[i].r6b_val); + ret = fc2580_wr_reg_ff(priv, 0x6b, fc2580_freq_regs_lut[i].r6b_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x6c, fc2580_freq_regs_lut[i].r6c_val); + ret = fc2580_wr_reg_ff(priv, 0x6c, fc2580_freq_regs_lut[i].r6c_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x6d, fc2580_freq_regs_lut[i].r6d_val); + ret = fc2580_wr_reg_ff(priv, 0x6d, fc2580_freq_regs_lut[i].r6d_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x6e, fc2580_freq_regs_lut[i].r6e_val); + ret = fc2580_wr_reg_ff(priv, 0x6e, fc2580_freq_regs_lut[i].r6e_val); if (ret < 0) goto err; - ret = fc2580_wr_reg(priv, 0x6f, fc2580_freq_regs_lut[i].r6f_val); + ret = fc2580_wr_reg_ff(priv, 0x6f, fc2580_freq_regs_lut[i].r6f_val); if (ret < 0) goto err; |