diff options
| author | Manu Abraham <abraham.manu@gmail.com> | 2009-12-04 05:57:28 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-01-17 11:55:43 -0200 |
| commit | bc832fa2c0310c25ed60204616ccef4f8db088f3 (patch) | |
| tree | 4544c2e786cc462d2b9d143b3c3a0ad7cd74a424 /drivers/media/dvb/mantis/mantis_i2c.c | |
| parent | 3e978a8284080d801d20cda377d9cf7c12fe68b9 (diff) | |
V4L/DVB (13798): [Mantis] Enable power for all cards, use byte mode only on relevant devices
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/mantis/mantis_i2c.c')
| -rw-r--r-- | drivers/media/dvb/mantis/mantis_i2c.c | 47 |
1 files changed, 37 insertions, 10 deletions
diff --git a/drivers/media/dvb/mantis/mantis_i2c.c b/drivers/media/dvb/mantis/mantis_i2c.c index 16b9e7e77b82..758f32a63b2f 100644 --- a/drivers/media/dvb/mantis/mantis_i2c.c +++ b/drivers/media/dvb/mantis/mantis_i2c.c @@ -35,6 +35,8 @@ #define I2C_HW_B_MANTIS 0x1c +#define TRIALS 10000 + static int mantis_i2c_read(struct mantis_pci *mantis, const struct i2c_msg *msg) { u32 rxd, i, stat, trials; @@ -55,13 +57,25 @@ static int mantis_i2c_read(struct mantis_pci *mantis, const struct i2c_msg *msg) mmwrite(rxd, MANTIS_I2CDATA_CTL); /* wait for xfer completion */ - for (trials = 0; trials < 100; trials++) { - udelay(500); + for (trials = 0; trials < TRIALS; trials++) { + msleep(1); stat = mmread(MANTIS_INT_STAT); if (stat & MANTIS_INT_I2CDONE) break; } + dprintk(MANTIS_TMG, 0, "I2CDONE: trials=%d\n", trials); + + /* wait for xfer completion */ + for (trials = 0; trials < TRIALS; trials++) { + stat = mmread(MANTIS_INT_STAT); + if (stat & MANTIS_INT_I2CRACK) + break; + msleep(1); + } + + dprintk(MANTIS_TMG, 0, "I2CRACK: trials=%d\n", trials); + rxd = mmread(MANTIS_I2CDATA_CTL); msg->buf[i] = (u8)((rxd >> 8) & 0xFF); dprintk(MANTIS_INFO, 0, "%02x ", msg->buf[i]); @@ -93,12 +107,24 @@ static int mantis_i2c_write(struct mantis_pci *mantis, const struct i2c_msg *msg mmwrite(txd, MANTIS_I2CDATA_CTL); /* wait for xfer completion */ - for (trials = 0; trials < 100; trials++) { - udelay(500); + for (trials = 0; trials < TRIALS; trials++) { + msleep(1); stat = mmread(MANTIS_INT_STAT); if (stat & MANTIS_INT_I2CDONE) break; } + + dprintk(MANTIS_TMG, 0, "I2CDONE: trials=%d\n", trials); + + /* wait for xfer completion */ + for (trials = 0; trials < TRIALS; trials++) { + stat = mmread(MANTIS_INT_STAT); + if (stat & MANTIS_INT_I2CRACK) + break; + msleep(1); + } + + dprintk(MANTIS_TMG, 0, "I2CRACK: trials=%d\n", trials); } dprintk(MANTIS_INFO, 0, "]\n"); @@ -122,10 +148,11 @@ static int mantis_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, in while (i < num) { /* Byte MODE */ - if (((i + 1) < num) && - (msgs[i].len < 2) && - (msgs[i + 1].len < 2) && - (msgs[i + 1].flags & I2C_M_RD)) { + if ((config->i2c_mode & MANTIS_BYTE_MODE) && + ((i + 1) < num) && + (msgs[i].len < 2) && + (msgs[i + 1].len < 2) && + (msgs[i + 1].flags & I2C_M_RD)) { dprintk(MANTIS_DEBUG, 0, " Byte MODE:\n"); @@ -136,8 +163,8 @@ static int mantis_i2c_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs, in mmwrite(txd, MANTIS_I2CDATA_CTL); /* wait for xfer completion */ - for (trials = 0; trials < 100; trials++) { - udelay(500); + for (trials = 0; trials < TRIALS; trials++) { + msleep(1); stat = mmread(MANTIS_INT_STAT); if (stat & MANTIS_INT_I2CDONE) break; |