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Bluetooth: btmrvl: use cal-data from device-tree instead of conf file

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Some ARM versions of Chromebook need to download a new calibration
data from host driver to firmware. They do have EEPROM but still
need a piece of new calibration data in test mode.

The cal-data is platform dependent. It's simpler and more feasible
to use device tree based cal-data instead of configuration file
based cal-data.

This patch remove configuration file based cal-data downloading
and replace it using cal-data from device tree.

When CONFIG_OF is not selected, or the specific property is not
present in the device tree, the calibration downloading will not
happen.

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>
This commit is contained in:
Bing Zhao 2013-11-01 15:28:24 -07:00 committed by Gustavo Padovan
parent 3e4543abf9
commit 433a9389a1
4 changed files with 18 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/bluetooth/btmrvl_drv.h
View File

@ -23,8 +23,6 @@
#include <linux/bitops.h>
#include <linux/slab.h>
#include <net/bluetooth/bluetooth.h>
#include <linux/ctype.h>
#include <linux/firmware.h>
#define BTM_HEADER_LEN 4
#define BTM_UPLD_SIZE 2312
@ -43,8 +41,6 @@ struct btmrvl_thread {
struct btmrvl_device {
void *card;
struct hci_dev *hcidev;
struct device *dev;
const char *cal_data;
u8 dev_type;

92
drivers/bluetooth/btmrvl_main.c
View File

@ -19,7 +19,7 @@
**/
#include <linux/module.h>
#include <linux/of.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@ -414,52 +414,8 @@ static int btmrvl_open(struct hci_dev *hdev)
return 0;
}
/*
* This function parses provided calibration data input. It should contain
* hex bytes separated by space or new line character. Here is an example.
* 00 1C 01 37 FF FF FF FF 02 04 7F 01
* CE BA 00 00 00 2D C6 C0 00 00 00 00
* 00 F0 00 00
*/
static int btmrvl_parse_cal_cfg(const u8 *src, u32 len, u8 *dst, u32 dst_size)
{
const u8 *s = src;
u8 *d = dst;
int ret;
u8 tmp[3];
tmp[2] = '\0';
while ((s - src) <= len - 2) {
if (isspace(*s)) {
s++;
continue;
}
if (isxdigit(*s)) {
if ((d - dst) >= dst_size) {
BT_ERR("calibration data file too big!!!");
return -EINVAL;
}
memcpy(tmp, s, 2);
ret = kstrtou8(tmp, 16, d++);
if (ret < 0)
return ret;
s += 2;
} else {
return -EINVAL;
}
}
if (d == dst)
return -EINVAL;
return 0;
}
static int btmrvl_load_cal_data(struct btmrvl_private *priv,
u8 *config_data)
static int btmrvl_download_cal_data(struct btmrvl_private *priv,
u8 *config_data)
{
int i, ret;
u8 data[BT_CMD_DATA_SIZE];
@ -487,54 +443,40 @@ static int btmrvl_load_cal_data(struct btmrvl_private *priv,
return 0;
}
static int
btmrvl_process_cal_cfg(struct btmrvl_private *priv, u8 *data, u32 size)
static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
{
struct device_node *dt_node;
u8 cal_data[BT_CAL_DATA_SIZE];
const char name[] = "btmrvl_caldata";
const char property[] = "btmrvl,caldata";
int ret;
ret = btmrvl_parse_cal_cfg(data, size, cal_data, sizeof(cal_data));
dt_node = of_find_node_by_name(NULL, name);
if (!dt_node)
return -ENODEV;
ret = of_property_read_u8_array(dt_node, property, cal_data,
sizeof(cal_data));
if (ret)
return ret;
ret = btmrvl_load_cal_data(priv, cal_data);
BT_DBG("Use cal data from device tree");
ret = btmrvl_download_cal_data(priv, cal_data);
if (ret) {
BT_ERR("Fail to load calibrate data");
BT_ERR("Fail to download calibrate data");
return ret;
}
return 0;
}
static int btmrvl_cal_data_config(struct btmrvl_private *priv)
{
const struct firmware *cfg;
int ret;
const char *cal_data = priv->btmrvl_dev.cal_data;
if (!cal_data)
return 0;
ret = request_firmware(&cfg, cal_data, priv->btmrvl_dev.dev);
if (ret < 0) {
BT_DBG("Failed to get %s file, skipping cal data download",
cal_data);
return 0;
}
ret = btmrvl_process_cal_cfg(priv, (u8 *)cfg->data, cfg->size);
release_firmware(cfg);
return ret;
}
static int btmrvl_setup(struct hci_dev *hdev)
{
struct btmrvl_private *priv = hci_get_drvdata(hdev);
btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
if (btmrvl_cal_data_config(priv))
BT_ERR("Set cal data failed");
btmrvl_cal_data_dt(priv);
priv->btmrvl_dev.psmode = 1;
btmrvl_enable_ps(priv);

9
drivers/bluetooth/btmrvl_sdio.c
View File

@ -18,6 +18,7 @@
* this warranty disclaimer.
**/
#include <linux/firmware.h>
#include <linux/slab.h>
#include <linux/mmc/sdio_ids.h>
@ -101,7 +102,6 @@ static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = {
static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
.helper = "mrvl/sd8688_helper.bin",
.firmware = "mrvl/sd8688.bin",
.cal_data = NULL,
.reg = &btmrvl_reg_8688,
.sd_blksz_fw_dl = 64,
};
@ -109,7 +109,6 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
.helper = NULL,
.firmware = "mrvl/sd8787_uapsta.bin",
.cal_data = NULL,
.reg = &btmrvl_reg_87xx,
.sd_blksz_fw_dl = 256,
};
@ -117,7 +116,6 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
.helper = NULL,
.firmware = "mrvl/sd8797_uapsta.bin",
.cal_data = "mrvl/sd8797_caldata.conf",
.reg = &btmrvl_reg_87xx,
.sd_blksz_fw_dl = 256,
};
@ -125,7 +123,6 @@ static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
.helper = NULL,
.firmware = "mrvl/sd8897_uapsta.bin",
.cal_data = NULL,
.reg = &btmrvl_reg_88xx,
.sd_blksz_fw_dl = 256,
};
@ -1007,7 +1004,6 @@ static int btmrvl_sdio_probe(struct sdio_func *func,
struct btmrvl_sdio_device *data = (void *) id->driver_data;
card->helper = data->helper;
card->firmware = data->firmware;
card->cal_data = data->cal_data;
card->reg = data->reg;
card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
}
@ -1036,8 +1032,6 @@ static int btmrvl_sdio_probe(struct sdio_func *func,
}
card->priv = priv;
priv->btmrvl_dev.dev = &card->func->dev;
priv->btmrvl_dev.cal_data = card->cal_data;
/* Initialize the interface specific function pointers */
priv->hw_host_to_card = btmrvl_sdio_host_to_card;
@ -1220,5 +1214,4 @@ MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
MODULE_FIRMWARE("mrvl/sd8688.bin");
MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
MODULE_FIRMWARE("mrvl/sd8797_caldata.conf");
MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");

2
drivers/bluetooth/btmrvl_sdio.h
View File

@ -85,7 +85,6 @@ struct btmrvl_sdio_card {
u32 ioport;
const char *helper;
const char *firmware;
const char *cal_data;
const struct btmrvl_sdio_card_reg *reg;
u16 sd_blksz_fw_dl;
u8 rx_unit;
@ -95,7 +94,6 @@ struct btmrvl_sdio_card {
struct btmrvl_sdio_device {
const char *helper;
const char *firmware;
const char *cal_data;
const struct btmrvl_sdio_card_reg *reg;
u16 sd_blksz_fw_dl;
};