diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0874-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0874-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0874-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch b/target/linux/bcm27xx/patches-5.4/950-0874-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch deleted file mode 100644 index 0b06442a3e..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0874-media-i2c-ov9281-Read-chip-ID-via-2-reads.patch +++ /dev/null @@ -1,42 +0,0 @@ -From 5c6b7b60d7d607b59b4208e758180d4f93be8788 Mon Sep 17 00:00:00 2001 -From: Dave Stevenson <dave.stevenson@raspberrypi.com> -Date: Mon, 6 Jul 2020 17:51:32 +0100 -Subject: [PATCH] media: i2c: ov9281: Read chip ID via 2 reads - -Vision Components have made an OV9281 module which blocks reading -back the majority of registers to comply with NDAs, and in doing -so doesn't allow auto-increment register reading as used when -reading the chip ID. - -Use two reads and manually combine the results. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> ---- - drivers/media/i2c/ov9281.c | 14 +++++++++----- - 1 file changed, 9 insertions(+), 5 deletions(-) - ---- a/drivers/media/i2c/ov9281.c -+++ b/drivers/media/i2c/ov9281.c -@@ -904,13 +904,17 @@ static int ov9281_check_sensor_id(struct - struct i2c_client *client) - { - struct device *dev = &ov9281->client->dev; -- u32 id = 0; -+ u32 id = 0, id_msb; - int ret; - -- ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID, -- OV9281_REG_VALUE_16BIT, &id); -- if (id != CHIP_ID) { -- dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret); -+ ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID + 1, -+ OV9281_REG_VALUE_08BIT, &id); -+ if (!ret) -+ ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID, -+ OV9281_REG_VALUE_08BIT, &id_msb); -+ id |= (id_msb << 8); -+ if (ret || id != CHIP_ID) { -+ dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret); - return -ENODEV; - } - |