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Bluetooth: hci_qca: Add wrapper functions for setting UART speed

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In function qca_setup, we set initial and operating speeds for Qualcomm
Bluetooth SoC's. This block of code is common across different
Qualcomm Bluetooth SoC's. Instead of duplicating the code, created
a wrapper function to set the speeds. So that future coming SoC's
can use these wrapper functions to set speeds.

Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Balakrishna Godavarthi 2018-08-03 17:46:29 +05:30 committed by Marcel Holtmann
parent aadebac463
commit 83d9c5e566
1 changed files with 70 additions and 23 deletions
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93
drivers/bluetooth/hci_qca.c
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@ -119,6 +119,11 @@ struct qca_data {
u64 votes_off;
};
enum qca_speed_type {
QCA_INIT_SPEED = 1,
QCA_OPER_SPEED
};
struct qca_serdev {
struct hci_uart serdev_hu;
struct gpio_desc *bt_en;
@ -923,6 +928,61 @@ static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
hci_uart_set_baudrate(hu, speed);
}
static unsigned int qca_get_speed(struct hci_uart *hu,
enum qca_speed_type speed_type)
{
unsigned int speed = 0;
if (speed_type == QCA_INIT_SPEED) {
if (hu->init_speed)
speed = hu->init_speed;
else if (hu->proto->init_speed)
speed = hu->proto->init_speed;
} else {
if (hu->oper_speed)
speed = hu->oper_speed;
else if (hu->proto->oper_speed)
speed = hu->proto->oper_speed;
}
return speed;
}
static int qca_check_speeds(struct hci_uart *hu)
{
if (!qca_get_speed(hu, QCA_INIT_SPEED) ||
!qca_get_speed(hu, QCA_OPER_SPEED))
return -EINVAL;
return 0;
}
static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type)
{
unsigned int speed, qca_baudrate;
int ret;
if (speed_type == QCA_INIT_SPEED) {
speed = qca_get_speed(hu, QCA_INIT_SPEED);
if (speed)
host_set_baudrate(hu, speed);
} else {
speed = qca_get_speed(hu, QCA_OPER_SPEED);
if (!speed)
return 0;
qca_baudrate = qca_get_baudrate_value(speed);
bt_dev_info(hu->hdev, "Set UART speed to %d", speed);
ret = qca_set_baudrate(hu->hdev, qca_baudrate);
if (ret)
return ret;
host_set_baudrate(hu, speed);
}
return 0;
}
static int qca_setup(struct hci_uart *hu)
{
struct hci_dev *hdev = hu->hdev;
@ -933,37 +993,24 @@ static int qca_setup(struct hci_uart *hu)
bt_dev_info(hdev, "ROME setup");
ret = qca_check_speeds(hu);
if (ret)
return ret;
/* Patch downloading has to be done without IBS mode */
clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
/* Setup initial baudrate */
speed = 0;
if (hu->init_speed)
speed = hu->init_speed;
else if (hu->proto->init_speed)
speed = hu->proto->init_speed;
if (speed)
host_set_baudrate(hu, speed);
qca_set_speed(hu, QCA_INIT_SPEED);
/* Setup user speed if needed */
speed = 0;
if (hu->oper_speed)
speed = hu->oper_speed;
else if (hu->proto->oper_speed)
speed = hu->proto->oper_speed;
speed = qca_get_speed(hu, QCA_OPER_SPEED);
if (speed) {
qca_baudrate = qca_get_baudrate_value(speed);
bt_dev_info(hdev, "Set UART speed to %d", speed);
ret = qca_set_baudrate(hdev, qca_baudrate);
if (ret) {
bt_dev_err(hdev, "Failed to change the baud rate (%d)",
ret);
ret = qca_set_speed(hu, QCA_OPER_SPEED);
if (ret)
return ret;
}
host_set_baudrate(hu, speed);
qca_baudrate = qca_get_baudrate_value(speed);
}
/* Get QCA version information */