diff options
author | Steven Toth <stoth@kernellabs.com> | 2011-10-10 14:09:55 (GMT) |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-10-14 20:18:50 (GMT) |
commit | 33cdeb35f559270d2c51ed641df69a9ac659bc22 (patch) | |
tree | a999889d3b58f38f3fd0c1659a8dc3fcb216becb /drivers/media | |
parent | 8304be888c55b501b93907177e683db62d4000c0 (diff) | |
download | linux-fsl-qoriq-33cdeb35f559270d2c51ed641df69a9ac659bc22.tar.xz |
[media] cx23885: Enable audio line in support from the back panel
Add code to program the flatiron internal i2c ADC and pass the
appropriate audio mux enums to the cx25840 driver.
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r-- | drivers/media/video/cx23885/cx23885-cards.c | 3 | ||||
-rw-r--r-- | drivers/media/video/cx23885/cx23885-video.c | 76 |
2 files changed, 79 insertions, 0 deletions
diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c index 75d77c2d..969a9a3 100644 --- a/drivers/media/video/cx23885/cx23885-cards.c +++ b/drivers/media/video/cx23885/cx23885-cards.c @@ -106,12 +106,14 @@ struct cx23885_board cx23885_boards[] = { .vmux = CX25840_VIN7_CH3 | CX25840_VIN5_CH2 | CX25840_VIN2_CH1, + .amux = CX25840_AUDIO8, .gpio0 = 0, }, { .type = CX23885_VMUX_COMPOSITE1, .vmux = CX25840_VIN7_CH3 | CX25840_VIN4_CH2 | CX25840_VIN6_CH1, + .amux = CX25840_AUDIO7, .gpio0 = 0, }, { .type = CX23885_VMUX_SVIDEO, @@ -119,6 +121,7 @@ struct cx23885_board cx23885_boards[] = { CX25840_VIN4_CH2 | CX25840_VIN8_CH1 | CX25840_SVIDEO_ON, + .amux = CX25840_AUDIO7, .gpio0 = 0, } }, }, diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c index 44a63c4..adc8f78 100644 --- a/drivers/media/video/cx23885/cx23885-video.c +++ b/drivers/media/video/cx23885/cx23885-video.c @@ -417,6 +417,71 @@ static void res_free(struct cx23885_dev *dev, struct cx23885_fh *fh, mutex_unlock(&dev->lock); } +static int cx23885_flatiron_write(struct cx23885_dev *dev, u8 reg, u8 data) +{ + /* 8 bit registers, 8 bit values */ + u8 buf[] = { reg, data }; + + struct i2c_msg msg = { .addr = 0x98 >> 1, + .flags = 0, .buf = buf, .len = 2 }; + + return i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg, 1); +} + +static u8 cx23885_flatiron_read(struct cx23885_dev *dev, u8 reg) +{ + /* 8 bit registers, 8 bit values */ + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + + struct i2c_msg msg[] = { + { .addr = 0x98 >> 1, .flags = 0, .buf = b0, .len = 1 }, + { .addr = 0x98 >> 1, .flags = I2C_M_RD, .buf = b1, .len = 1 } + }; + + ret = i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg[0], 2); + if (ret != 2) + printk(KERN_ERR "%s() error\n", __func__); + + return b1[0]; +} + +static void cx23885_flatiron_dump(struct cx23885_dev *dev) +{ + int i; + dprintk(1, "Flatiron dump\n"); + for (i = 0; i < 0x24; i++) { + dprintk(1, "FI[%02x] = %02x\n", i, + cx23885_flatiron_read(dev, i)); + } +} + +static int cx23885_flatiron_mux(struct cx23885_dev *dev, int input) +{ + u8 val; + dprintk(1, "%s(input = %d)\n", __func__, input); + + if (input == 1) + val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) & ~FLD_CH_SEL; + else if (input == 2) + val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) | FLD_CH_SEL; + else + return -EINVAL; + + val |= 0x20; /* Enable clock to delta-sigma and dec filter */ + + cx23885_flatiron_write(dev, CH_PWR_CTRL1, val); + + /* Wake up */ + cx23885_flatiron_write(dev, CH_PWR_CTRL2, 0); + + if (video_debug) + cx23885_flatiron_dump(dev); + + return 0; +} + static int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input) { dprintk(1, "%s() video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n", @@ -437,6 +502,17 @@ static int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input) v4l2_subdev_call(dev->sd_cx25840, video, s_routing, INPUT(input)->vmux, 0, 0); + if (dev->board == CX23885_BOARD_HAUPPAUGE_HVR1800) { + /* Configure audio routing */ + v4l2_subdev_call(dev->sd_cx25840, audio, s_routing, + INPUT(input)->amux, 0, 0); + + if (INPUT(input)->amux == CX25840_AUDIO7) + cx23885_flatiron_mux(dev, 1); + else if (INPUT(input)->amux == CX25840_AUDIO6) + cx23885_flatiron_mux(dev, 2); + } + return 0; } |