ar71xx: add support for COMFAST CF-E355AC

COMFAST CF-E355AC is a ceiling mount AP with PoE support, based on
Qualcomm/Atheros QCA9531 + QCA9882.

Short specification:

- 2x 10/100 Mbps Ethernet, with PoE support
- 64MB of RAM (DDR2)
- 16 MB of FLASH
- 2T2R 2.4 GHz, 802.11b/g/n
- 2T2R 5 GHz, 802.11ac/n/a
- built-in 4x 3 dBi antennas
- output power (max): 500 mW (27 dBm)
- 1x RGB LED, 1x button
- built-in watchdog chipset

Flash instruction:

Original firmware is based on OpenWrt.
Use sysupgrade image directly in vendor GUI.

Signed-off-by: Enrique Giraldo <enrique.giraldo@galgus.net>
[whitespace fixes, ac radio caldata offset fix]
Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

4 files changed, 75 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
index 6b6188dc7b..173de346f1 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -2028,6 +2028,14 @@ config ATH79_MACH_CF_E320N_V2
 	select ATH79_DEV_USB
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_CF_E355AC
+	bool "COMFAST CF-E355AC support"
+	select SOC_QCA953X
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_AP9X_PCI if PCI
+	select ATH79_DEV_WMAC
+
 config ATH79_MACH_CF_E380AC_V1
 	bool "COMFAST CF-E380AC v1 support"
 	select SOC_QCA955X
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index 9e91c44060..0975aac8b3 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -74,6 +74,7 @@ obj-$(CONFIG_ATH79_MACH_CAP4200AG)		+= mach-cap4200ag.o
 obj-$(CONFIG_ATH79_MACH_CARAMBOLA2)		+= mach-carambola2.o
 obj-$(CONFIG_ATH79_MACH_CF_E316N_V2)		+= mach-cf-e316n-v2.o
 obj-$(CONFIG_ATH79_MACH_CF_E320N_V2)		+= mach-cf-e316n-v2.o
+obj-$(CONFIG_ATH79_MACH_CF_E355AC)		+= mach-cf-e316n-v2.o
 obj-$(CONFIG_ATH79_MACH_CF_E380AC_V1)		+= mach-cf-e316n-v2.o
 obj-$(CONFIG_ATH79_MACH_CF_E380AC_V2)		+= mach-cf-e316n-v2.o
 obj-$(CONFIG_ATH79_MACH_CF_E520N)		+= mach-cf-e316n-v2.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-cf-e316n-v2.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-cf-e316n-v2.c
index 2c202e3754..82fe83f01e 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-cf-e316n-v2.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-cf-e316n-v2.c
@@ -2,6 +2,7 @@
  *  Support for COMFAST boards:
  *  - CF-E316N v2 (AR9341)
  *  - CF-E320N v2 (QCA9531)
+ *  - CF-E355AC (QCA9531)
  *  - CF-E380AC v1/v2 (QCA9558)
  *  - CF-E520N/CF-E530N (QCA9531)
  *
@@ -130,6 +131,42 @@ static struct gpio_keys_button cf_e320n_v2_gpio_keys[] __initdata = {
 	},
 };
 
+/* CF-E355AC */
+#define CF_E355AC_GPIO_LED_LAN		3
+#define CF_E355AC_GPIO_LED_WLAN2G	0
+#define CF_E355AC_GPIO_LED_WLAN5G	2
+
+#define CF_E355AC_GPIO_EXT_WDT		13
+
+#define CF_E355AC_GPIO_BTN_RESET	17
+
+static struct gpio_led cf_e355ac_leds_gpio[] __initdata = {
+	{
+		.name		= "cf-e355ac:green:lan",
+		.gpio		= CF_E355AC_GPIO_LED_LAN,
+		.active_low	= 0,
+	}, {
+		.name		= "cf-e355ac:blue:wlan2g",
+		.gpio		= CF_E355AC_GPIO_LED_WLAN2G,
+		.active_low	= 0,
+	}, {
+		.name		= "cf-e355ac:red:wlan5g",
+		.gpio		= CF_E355AC_GPIO_LED_WLAN5G,
+		.active_low	= 0,
+	},
+};
+
+static struct gpio_keys_button cf_e355ac_gpio_keys[] __initdata = {
+	{
+		.desc		= "Reset button",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = CF_EXXXN_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= CF_E355AC_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+};
+
 /* CF-E380AC v1/v2 */
 #define CF_E380AC_V1V2_GPIO_LED_LAN	0
 #define CF_E380AC_V1V2_GPIO_LED_WLAN2G	2
@@ -355,6 +392,34 @@ static void __init cf_e320n_v2_setup(void)
 MIPS_MACHINE(ATH79_MACH_CF_E320N_V2, "CF-E320N-V2", "COMFAST CF-E320N v2",
 	     cf_e320n_v2_setup);
 
+static void __init cf_e355ac_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1f010000);
+
+	/* Disable JTAG, enabling GPIOs 0-3 */
+	ath79_gpio_function_setup(AR934X_GPIO_FUNC_JTAG_DISABLE, 0);
+
+	cf_exxxn_common_setup(0x10000, CF_E355AC_GPIO_EXT_WDT);
+
+	cf_exxxn_qca953x_eth_setup();
+
+	ath79_gpio_output_select(CF_E355AC_GPIO_LED_LAN, 0);
+	ath79_gpio_output_select(CF_E355AC_GPIO_LED_WLAN2G, 0);
+	ath79_gpio_output_select(CF_E355AC_GPIO_LED_WLAN5G, 0);
+
+	ap91_pci_init(art + 0x5000, NULL);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(cf_e355ac_leds_gpio),
+				 cf_e355ac_leds_gpio);
+
+	ath79_register_gpio_keys_polled(1, CF_EXXXN_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(cf_e355ac_gpio_keys),
+					cf_e355ac_gpio_keys);
+}
+
+MIPS_MACHINE(ATH79_MACH_CF_E355AC, "CF-E355AC", "COMFAST CF-E355AC",
+	     cf_e355ac_setup);
+
 static void __init cf_e380ac_v1v2_common_setup(unsigned long art_ofs)
 {
 	u8 *mac = (u8 *) KSEG1ADDR(0x1f000000 + art_ofs);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 16fbdcef84..756d406e11 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -60,6 +60,7 @@ enum ath79_mach_type {
 	ATH79_MACH_CARAMBOLA2,			/* 8devices Carambola2 */
 	ATH79_MACH_CF_E316N_V2,			/* COMFAST CF-E316N v2 */
 	ATH79_MACH_CF_E320N_V2,			/* COMFAST CF-E320N v2 */
+	ATH79_MACH_CF_E355AC,			/* COMFAST CF-E355AC */
 	ATH79_MACH_CF_E380AC_V1,		/* COMFAST CF-E380AC v1 */
 	ATH79_MACH_CF_E380AC_V2,		/* COMFAST CF-E380AC v2 */
 	ATH79_MACH_CF_E520N,			/* COMFAST CF-E520N */