diff options
| author | Bing Zhao <bzhao@marvell.com> | 2013-11-01 23:28:25 +0100 |
|---|---|---|
| committer | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2013-12-04 14:09:03 +0100 |
| commit | 8a4934f1d62b8be7a00cdb4e65124f4d02d412f3 (patch) | |
| tree | 7430963bf508518e0ce48caba946292d81ed6042 /drivers/bluetooth | |
| parent | Bluetooth: btmrvl: use cal-data from device-tree instead of conf file (diff) | |
| download | linux-8a4934f1d62b8be7a00cdb4e65124f4d02d412f3.tar.xz linux-8a4934f1d62b8be7a00cdb4e65124f4d02d412f3.zip | |
Bluetooth: btmrvl: remove cal-data byte swapping and redundant mem copy
The device tree property can define the cal-data in proper order.
There is no need to swap the bytes in driver.
Also remove the redundant cal-data memory copy after removing the
byte swapping.
Cc: Mike Frysinger <vapier@chromium.org>
Cc: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Hyuckjoo Lee <hyuckjoo.lee@samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btmrvl_drv.h | 2 | ||||
| -rw-r--r-- | drivers/bluetooth/btmrvl_main.c | 27 |
2 files changed, 11 insertions, 18 deletions
diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h index 98187f09393d..7399303d7d99 100644 --- a/drivers/bluetooth/btmrvl_drv.h +++ b/drivers/bluetooth/btmrvl_drv.h @@ -120,7 +120,7 @@ struct btmrvl_private { #define PS_SLEEP 0x01 #define PS_AWAKE 0x00 -#define BT_CMD_DATA_SIZE 32 +#define BT_CAL_HDR_LEN 4 #define BT_CAL_DATA_SIZE 28 struct btmrvl_event { diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index 6441f724aeb0..1e0320af00c6 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -415,28 +415,20 @@ static int btmrvl_open(struct hci_dev *hdev) } static int btmrvl_download_cal_data(struct btmrvl_private *priv, - u8 *config_data) + u8 *data, int len) { - int i, ret; - u8 data[BT_CMD_DATA_SIZE]; + int ret; data[0] = 0x00; data[1] = 0x00; data[2] = 0x00; - data[3] = BT_CMD_DATA_SIZE - 4; - - /* Swap cal-data bytes. Each four bytes are swapped. Considering 4 - * byte SDIO header offset, mapping of input and output bytes will be - * {3, 2, 1, 0} -> {0+4, 1+4, 2+4, 3+4}, - * {7, 6, 5, 4} -> {4+4, 5+4, 6+4, 7+4} */ - for (i = 4; i < BT_CMD_DATA_SIZE; i++) - data[i] = config_data[(i / 4) * 8 - 1 - i]; + data[3] = len; print_hex_dump_bytes("Calibration data: ", - DUMP_PREFIX_OFFSET, data, BT_CMD_DATA_SIZE); + DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len); ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data, - BT_CMD_DATA_SIZE); + BT_CAL_HDR_LEN + len); if (ret) BT_ERR("Failed to download caibration data\n"); @@ -446,7 +438,7 @@ static int btmrvl_download_cal_data(struct btmrvl_private *priv, static int btmrvl_cal_data_dt(struct btmrvl_private *priv) { struct device_node *dt_node; - u8 cal_data[BT_CAL_DATA_SIZE]; + u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE]; const char name[] = "btmrvl_caldata"; const char property[] = "btmrvl,caldata"; int ret; @@ -455,13 +447,14 @@ static int btmrvl_cal_data_dt(struct btmrvl_private *priv) if (!dt_node) return -ENODEV; - ret = of_property_read_u8_array(dt_node, property, cal_data, - sizeof(cal_data)); + ret = of_property_read_u8_array(dt_node, property, + cal_data + BT_CAL_HDR_LEN, + BT_CAL_DATA_SIZE); if (ret) return ret; BT_DBG("Use cal data from device tree"); - ret = btmrvl_download_cal_data(priv, cal_data); + ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE); if (ret) { BT_ERR("Fail to download calibrate data"); return ret; |