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Bluetooth: hci_uart: Add support for Amlogic HCI UART

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Add a new HCI protocol HCI_UART_AML for the Amlogic Bluetooth
controller. It works on the standard H4 protocol via a 4-wire UART
interface, with baud rates up to 4 Mbps.

The controller supports two types of commands: the TCI commands and the
vendor command. The former is for initial setup including setting baud
rates, downloading fw, starting chip and etc, while the latter is for
dumping firmware versions and setting public address after firmware
updates and normal startup.

It was verified on board of T602 (S905X4 + W265S2).

dmesg:
..
[    5.313450] Bluetooth: HCI UART protocol AML registered
[    6.506052] Bluetooth: hci0: fw_version: date = 42.28, number = 0xb2fd
...

Co-developed-by: Ye He <ye.he@amlogic.com>
Signed-off-by: Ye He <ye.he@amlogic.com>
Signed-off-by: Yang Li <yang.li@amlogic.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Yang Li
2024-09-10 12:44:10 -04:00
committed by Luiz Augusto von Dentz
parent e5e465a1ae
commit 37bac77e46
5 changed files with 781 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/bluetooth/Kconfig
+12
View File
@@ -274,6 +274,18 @@ config BT_HCIUART_MRVL
Say Y here to compile support for HCI MRVL protocol.
config BT_HCIUART_AML
bool "Amlogic protocol support"
depends on BT_HCIUART
depends on BT_HCIUART_SERDEV
select BT_HCIUART_H4
select FW_LOADER
help
The Amlogic protocol support enables Bluetooth HCI over serial
port interface for Amlogic Bluetooth controllers.
Say Y here to compile support for HCI AML protocol.
config BT_HCIBCM203X
tristate "HCI BCM203x USB driver"
depends on USB
drivers/bluetooth/Makefile
+1
View File
@@ -51,4 +51,5 @@ hci_uart-$(CONFIG_BT_HCIUART_BCM) += hci_bcm.o
hci_uart-$(CONFIG_BT_HCIUART_QCA) += hci_qca.o
hci_uart-$(CONFIG_BT_HCIUART_AG6XX) += hci_ag6xx.o
hci_uart-$(CONFIG_BT_HCIUART_MRVL) += hci_mrvl.o
hci_uart-$(CONFIG_BT_HCIUART_AML) += hci_aml.o
hci_uart-objs := $(hci_uart-y)
drivers/bluetooth/hci_aml.c
+755
View File
File diff suppressed because it is too large Load Diff
drivers/bluetooth/hci_ldisc.c
+6 -2
View File
@@ -870,7 +870,9 @@ static int __init hci_uart_init(void)
#ifdef CONFIG_BT_HCIUART_MRVL
mrvl_init();
#endif
#ifdef CONFIG_BT_HCIUART_AML
aml_init();
#endif
return 0;
}
@@ -906,7 +908,9 @@ static void __exit hci_uart_exit(void)
#ifdef CONFIG_BT_HCIUART_MRVL
mrvl_deinit();
#endif
#ifdef CONFIG_BT_HCIUART_AML
aml_deinit();
#endif
tty_unregister_ldisc(&hci_uart_ldisc);
}
drivers/bluetooth/hci_uart.h
+7 -1
View File
@@ -20,7 +20,7 @@
#define HCIUARTGETFLAGS _IOR('U', 204, int)
/* UART protocols */
#define HCI_UART_MAX_PROTO 12
#define HCI_UART_MAX_PROTO 13
#define HCI_UART_H4 0
#define HCI_UART_BCSP 1
@@ -34,6 +34,7 @@
#define HCI_UART_AG6XX 9
#define HCI_UART_NOKIA 10
#define HCI_UART_MRVL 11
#define HCI_UART_AML 12
#define HCI_UART_RAW_DEVICE 0
#define HCI_UART_RESET_ON_INIT 1
@@ -209,3 +210,8 @@ int ag6xx_deinit(void);
int mrvl_init(void);
int mrvl_deinit(void);
#endif
#ifdef CONFIG_BT_HCIUART_AML
int aml_init(void);
int aml_deinit(void);
#endif