diff options
| author | Tyler Trafford <tatrafford@comcast.net> | 2006-01-09 15:25:29 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@brturbo.com.br> | 2006-01-09 15:25:29 -0200 |
| commit | 210e207c1d98348f5993e6f580cd20cf20086d7d (patch) | |
| tree | 7975b53bb1d6f5e360e4ea8d71819f7a5ca2efb2 | |
| parent | 83ac8722be6d34b9bbcaabfff825d5847ce3a9d4 (diff) | |
V4L/DVB (3198): make cx25840 recover from some firmware load failures
- In the rare event that a 333MHz i2c firmware load fails after
writing some data, this fix makes the driver reset the DL_ADDR
registers to the proper values before continuing on with 100MHz
transfers.
Signed-off-by: Tyler Trafford <tatrafford@comcast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
| -rw-r--r-- | drivers/media/video/cx25840/cx25840-firmware.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/media/video/cx25840/cx25840-firmware.c b/drivers/media/video/cx25840/cx25840-firmware.c index df9d50a75542..f43024f2aaef 100644 --- a/drivers/media/video/cx25840/cx25840-firmware.c +++ b/drivers/media/video/cx25840/cx25840-firmware.c @@ -15,7 +15,6 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - #include <linux/module.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> @@ -94,13 +93,23 @@ static inline int check_fw_load(struct i2c_client *client, int size) static inline int fw_write(struct i2c_client *client, u8 * data, int size) { - if (i2c_master_send(client, data, size) < size) { + int sent; + + if ((sent = i2c_master_send(client, data, size)) < size) { if (fastfw) { cx25840_err("333MHz i2c firmware load failed\n"); fastfw = 0; set_i2c_delay(client, 10); + if (sent > 2) { + u16 dl_addr = cx25840_read(client, 0x801) << 8; + dl_addr |= cx25840_read(client, 0x800); + dl_addr -= sent - 2; + cx25840_write(client, 0x801, dl_addr >> 8); + cx25840_write(client, 0x800, dl_addr & 0xff); + } + if (i2c_master_send(client, data, size) < size) { cx25840_err ("100MHz i2c firmware load failed\n"); |