diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/dvb/frontends/cx24116.c | 17 | ||||
| -rw-r--r-- | drivers/media/dvb/frontends/cx24116.h | 3 |
2 files changed, 17 insertions, 3 deletions
diff --git a/drivers/media/dvb/frontends/cx24116.c b/drivers/media/dvb/frontends/cx24116.c index cf1ec6c..26e65a6 100644 --- a/drivers/media/dvb/frontends/cx24116.c +++ b/drivers/media/dvb/frontends/cx24116.c @@ -566,7 +566,7 @@ static int cx24116_load_firmware(struct dvb_frontend *fe, { struct cx24116_state *state = fe->demodulator_priv; struct cx24116_cmd cmd; - int i, ret; + int i, ret, len, remaining; unsigned char vers[4]; dprintk("%s\n", __func__); @@ -603,8 +603,19 @@ static int cx24116_load_firmware(struct dvb_frontend *fe, cx24116_writereg(state, 0xF5, 0x00); cx24116_writereg(state, 0xF6, 0x00); - /* write the entire firmware as one transaction */ - cx24116_writeregN(state, 0xF7, fw->data, fw->size); + /* Split firmware to the max I2C write len and write. + * This overflows 16 bit intentionally in order to get max write + * len when i2c_wr_max is set to 0. */ + for (remaining = fw->size; remaining > 0; + remaining -= (u16) (state->config->i2c_wr_max - 1)) { + + len = remaining; + if (len > (u16) (state->config->i2c_wr_max - 1)) + len = (u16) (state->config->i2c_wr_max - 1); + + cx24116_writeregN(state, 0xF7, &fw->data[fw->size - remaining], + len); + } cx24116_writereg(state, 0xF4, 0x10); cx24116_writereg(state, 0xF0, 0x00); diff --git a/drivers/media/dvb/frontends/cx24116.h b/drivers/media/dvb/frontends/cx24116.h index b1b76b4..7d90ab9 100644 --- a/drivers/media/dvb/frontends/cx24116.h +++ b/drivers/media/dvb/frontends/cx24116.h @@ -35,6 +35,9 @@ struct cx24116_config { /* Need to set MPEG parameters */ u8 mpg_clk_pos_pol:0x02; + + /* max bytes I2C provider can write at once */ + u16 i2c_wr_max; }; #if defined(CONFIG_DVB_CX24116) || \ |