From edbfbdb3bdcf9ae90ce06b92636a07c05224fe45 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Erik=20Andr=C3=A9n?= Date: Thu, 27 Nov 2008 13:41:55 -0300 Subject: [PATCH] V4L/DVB (10018): gspca - m5602 - ov9650: Use generic read_sensor function MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Toggle read sensor sequence depending on type of sensor. Check that no more than max width of a sensor is read. Signed-off-by: Erik Andrén Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/m5602/m5602_core.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/media/video/gspca/m5602/m5602_core.c b/drivers/media/video/gspca/m5602/m5602_core.c index aaba42058181..691b09a94e85 100644 --- a/drivers/media/video/gspca/m5602/m5602_core.c +++ b/drivers/media/video/gspca/m5602/m5602_core.c @@ -85,9 +85,14 @@ int m5602_read_sensor(struct sd *sd, const u8 address, { int err, i; + if (!len || len > sd->sensor->i2c_regW) + return -EINVAL; + do { err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, i2c_data); } while ((*i2c_data & I2C_BUSY) && !err); + if (err < 0) + goto out; err = m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR, sd->sensor->i2c_slave_id); @@ -98,13 +103,19 @@ int m5602_read_sensor(struct sd *sd, const u8 address, if (err < 0) goto out; - err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x10 + len); - if (err < 0) - goto out; + if (sd->sensor->i2c_regW == 1) { + err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, len); + if (err < 0) + goto out; - err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x08); - if (err < 0) - goto out; + err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x08); + if (err < 0) + goto out; + } else { + err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x18 + len); + if (err < 0) + goto out; + } for (i = 0; (i < len) && !err; i++) { err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i])); -- 2.11.0