This patch support downloading configuration for
Atheros AR300x HCI UART chip at user requested baud rate
instead of the initial baud rate.
---
tools/hciattach.c | 2 +-
tools/hciattach.h | 3 +-
tools/hciattach_ath3k.c | 98 +++++++++++++++++++++++++++++++++-------------
3 files changed, 73 insertions(+), 30 deletions(-)
diff --git a/tools/hciattach.c b/tools/hciattach.c
index 7cb8e9e..e4d5aa1 100644
--- a/tools/hciattach.c
+++ b/tools/hciattach.c
@@ -311,7 +311,7 @@ static int texasalt(int fd, struct uart_t *u, struct termios *ti)
static int ath3k_ps(int fd, struct uart_t *u, struct termios *ti)
{
- return ath3k_init(fd, u->bdaddr, u->speed);
+ return ath3k_init(fd, u->speed, u->init_speed, u->bdaddr, ti);
}
static int ath3k_pm(int fd, struct uart_t *u, struct termios *ti)
diff --git a/tools/hciattach.h b/tools/hciattach.h
index 2d26b77..fed0d11 100644
--- a/tools/hciattach.h
+++ b/tools/hciattach.h
@@ -50,6 +50,7 @@ int texas_post(int fd, struct termios *ti);
int texasalt_init(int fd, int speed, struct termios *ti);
int stlc2500_init(int fd, bdaddr_t *bdaddr);
int bgb2xx_init(int dd, bdaddr_t *bdaddr);
-int ath3k_init(int fd, char *bdaddr, int speed);
+int ath3k_init(int fd, int speed, int init_speed, char *bdaddr,
+ struct termios *ti);
int ath3k_post(int fd, int pm);
int qualcomm_init(int fd, int speed, struct termios *ti, const char *bdaddr);
diff --git a/tools/hciattach_ath3k.c b/tools/hciattach_ath3k.c
index 70ade30..728e660 100644
--- a/tools/hciattach_ath3k.c
+++ b/tools/hciattach_ath3k.c
@@ -922,14 +922,49 @@ int ath3k_post(int fd, int pm)
#define WRITE_BAUD_CMD_LEN 6
#define MAX_CMD_LEN WRITE_BDADDR_CMD_LEN
+static int set_cntrlr_baud(int fd, int speed)
+{
+ int baud;
+ struct timespec tm = { 0, 500000 };
+ unsigned char cmd[MAX_CMD_LEN], rsp[HCI_MAX_EVENT_SIZE];
+ unsigned char *ptr = cmd + 1;
+ hci_command_hdr *ch = (void *)ptr;
+
+ cmd[0] = HCI_COMMAND_PKT;
+
+ /* set controller baud rate to user specified value */
+ ptr = cmd + 1;
+ ch->opcode = htobs(cmd_opcode_pack(HCI_VENDOR_CMD_OGF,
+ HCI_CHG_BAUD_CMD_OCF));
+ ch->plen = 2;
+ ptr += HCI_COMMAND_HDR_SIZE;
+
+ baud = speed/100;
+ ptr[0] = (char)baud;
+ ptr[1] = (char)(baud >> 8);
+
+ if (write(fd, cmd, WRITE_BAUD_CMD_LEN) != WRITE_BAUD_CMD_LEN) {
+ perror("Failed to write change baud rate command");
+ return -ETIMEDOUT;
+ }
+
+ nanosleep(&tm, NULL);
+
+ if (read_hci_event(fd, rsp, sizeof(rsp)) < 0)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
/*
* Atheros AR300x specific initialization and configuration file
* download
*/
-int ath3k_init(int fd, char *bdaddr, int speed)
+int ath3k_init(int fd, int speed, int init_speed, char *bdaddr,
+ struct termios *ti)
{
int r;
- int baud;
+ int err = 0;
struct timespec tm = { 0, 500000 };
unsigned char cmd[MAX_CMD_LEN], rsp[HCI_MAX_EVENT_SIZE];
unsigned char *ptr = cmd + 1;
@@ -937,11 +972,23 @@ int ath3k_init(int fd, char *bdaddr, int speed)
cmd[0] = HCI_COMMAND_PKT;
+ /* set both controller and host baud rate to maximum possible value */
+ err = set_cntrlr_baud(fd, speed);
+ if (err < 0)
+ return err;
+
+ err = set_speed(fd, ti, speed);
+ if (err < 0) {
+ perror("Can't set required baud rate");
+ return err;
+ }
+
/* Download PS and patch */
r = ath_ps_download(fd);
if (r < 0) {
perror("Failed to Download configuration");
- return -ETIMEDOUT;
+ err = -ETIMEDOUT;
+ goto failed;
}
/* Write BDADDR */
@@ -960,12 +1007,14 @@ int ath3k_init(int fd, char *bdaddr, int speed)
if (write(fd, cmd, WRITE_BDADDR_CMD_LEN) !=
WRITE_BDADDR_CMD_LEN) {
perror("Failed to write BD_ADDR command\n");
- return -ETIMEDOUT;
+ err = -ETIMEDOUT;
+ goto failed;
}
if (read_hci_event(fd, rsp, sizeof(rsp)) < 0) {
perror("Failed to set BD_ADDR\n");
- return -ETIMEDOUT;
+ err = -ETIMEDOUT;
+ goto failed;
}
}
@@ -975,33 +1024,26 @@ int ath3k_init(int fd, char *bdaddr, int speed)
cmd[3] = 0x00;
r = write(fd, cmd, 4);
- if (r != 4)
- return -ETIMEDOUT;
+ if (r != 4) {
+ err = -ETIMEDOUT;
+ goto failed;
+ }
nanosleep(&tm, NULL);
- if (read_hci_event(fd, rsp, sizeof(rsp)) < 0)
- return -ETIMEDOUT;
-
- /* set controller baud rate to user specified value */
- ptr = cmd + 1;
- ch->opcode = htobs(cmd_opcode_pack(HCI_VENDOR_CMD_OGF,
- HCI_CHG_BAUD_CMD_OCF));
- ch->plen = 2;
- ptr += HCI_COMMAND_HDR_SIZE;
-
- baud = speed/100;
- ptr[0] = (char)baud;
- ptr[1] = (char)(baud >> 8);
-
- if (write(fd, cmd, WRITE_BAUD_CMD_LEN) != WRITE_BAUD_CMD_LEN) {
- perror("Failed to write change baud rate command");
- return -ETIMEDOUT;
+ if (read_hci_event(fd, rsp, sizeof(rsp)) < 0) {
+ err = -ETIMEDOUT;
+ goto failed;
}
- nanosleep(&tm, NULL);
+ err = set_cntrlr_baud(fd, speed);
+ if (err < 0)
+ return err;
- if (read_hci_event(fd, rsp, sizeof(rsp)) < 0)
- return -ETIMEDOUT;
+failed:
+ if (err < 0) {
+ set_cntrlr_baud(fd, init_speed);
+ set_speed(fd, ti, init_speed);
+ }
- return 0;
+ return err;
}
--
1.7.0.4
Hi Suraj,
On Tue, Nov 23, 2010, Suraj Sumangala wrote:
> This patch support downloading configuration for
> Atheros AR300x HCI UART chip at user requested baud rate
> instead of the initial baud rate.
> ---
> tools/hciattach.c | 2 +-
> tools/hciattach.h | 3 +-
> tools/hciattach_ath3k.c | 98 +++++++++++++++++++++++++++++++++-------------
> 3 files changed, 73 insertions(+), 30 deletions(-)
Thanks for the update. Now this patch is also pushed upstream.
Johan