bmips: add support for Sercomm SHG2500

Sercomm SHG2500 is a BCM63168 with 128M of RAM, 256M of NAND, an external
BCM53124S switch for the LAN ports and internal/external Broadcom wifi.
LEDs are connected to an external MSP430G2513 MCU controlled via SPI.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2023-03-30 23:14:13 +02:00
parent d11a7c4d95
commit aefeb34223
6 changed files with 776 additions and 1 deletions

View File

@ -0,0 +1,312 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include "bcm63268.dtsi"
/ {
model = "Sercomm SHG2500";
compatible = "sercomm,shg2500", "brcm,bcm63168", "brcm,bcm63268";
aliases {
led-boot = &led_power_red;
led-failsafe = &led_power_red;
led-running = &led_power_red;
led-upgrade = &led_power_red;
led-internet = &led_internet_green;
led-usb = &led_modem_green;
led-wireless = &led_wireless_green;
};
i2c {
compatible = "i2c-gpio";
sda-gpios = <&gpio 14 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
scl-gpios = <&gpio 9 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
#address-cells = <1>;
#size-cells = <0>;
};
keys {
compatible = "gpio-keys-polled";
poll-interval = <20>;
wps {
label = "wps";
gpios = <&gpio 34 GPIO_ACTIVE_LOW>;
linux,code = <KEY_WPS_BUTTON>;
debounce-interval = <60>;
};
reset {
label = "reset";
gpios = <&gpio 35 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
debounce-interval = <60>;
};
};
};
&ehci {
status = "okay";
};
&ethernet {
status = "okay";
nvmem-cells = <&macaddr_cferom_6a0>;
nvmem-cell-names = "mac-address";
};
&hsspi {
status = "okay";
led-controller@1 {
compatible = "sercomm,msp430-leds";
reg = <1>;
spi-max-frequency = <500000>;
led@1 {
reg = <1>;
label = "red:modem";
};
led_modem_green: led@2 {
reg = <2>;
label = "green:modem";
};
led@3 {
reg = <3>;
label = "blue:modem";
};
led@4 {
reg = <4>;
label = "red:internet";
};
led@5 {
reg = <5>;
label = "red:phone";
};
led@6 {
reg = <6>;
label = "green:phone";
};
led_wireless_green: led@7 {
reg = <7>;
label = "green:wifi";
};
led_power_red: led@8 {
reg = <8>;
label = "red:power";
};
led_internet_green: led@9 {
reg = <9>;
label = "green:internet";
};
};
};
&mdio_int {
phy12: ethernet-phy@c {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <12>;
};
};
&mdio_ext {
switch@1e {
compatible = "brcm,bcm53125";
reg = <30>;
dsa,member = <1 0>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@1 {
reg = <1>;
label = "lan1";
};
port@2 {
reg = <2>;
label = "lan2";
};
port@3 {
reg = <3>;
label = "lan3";
};
port@4 {
reg = <4>;
label = "lan4";
};
port@8 {
reg = <8>;
phy-mode = "rgmii";
ethernet = <&switch0port4>;
fixed-link {
speed = <1000>;
full-duplex;
};
};
};
};
};
&nflash {
status = "okay";
nandcs@0 {
compatible = "brcm,nandcs";
reg = <0>;
nand-ecc-step-size = <512>;
nand-ecc-strength = <15>;
nand-on-flash-bbt;
brcm,nand-oob-sector-size = <64>;
#address-cells = <1>;
#size-cells = <1>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
cferom: partition@0 {
label = "cferom";
reg = <0x0000000 0x0020000>;
read-only;
};
partition@20000 {
label = "part_map";
reg = <0x0020000 0x00a0000>;
read-only;
};
partition@c0000 {
label = "cferam1";
reg = <0x00c0000 0x0140000>;
read-only;
};
partition@200000 {
label = "cferam2";
reg = <0x0200000 0x0140000>;
read-only;
};
artition@6920000 {
label = "bootflag1";
reg = <0x6920000 0x0140000>;
};
partition@6a60000 {
label = "bootflag2";
reg = <0x6a60000 0x0140000>;
};
partition@520000 {
compatible = "sercomm,wfi";
label = "wfi";
reg = <0x0520000 0x6400000>;
};
partition@6ba0000 {
label = "xml_cfg";
reg = <0x6ba0000 0x0280000>;
read-only;
};
partition@6e20000 {
label = "app_data";
reg = <0x6e20000 0x0280000>;
read-only;
};
};
};
};
&ohci {
status = "okay";
};
&pcie {
status = "okay";
};
&pinctrl {
pinctrl_uart1: uart1-pins {
pinctrl_uart1_sdin: uart1_sdin {
function = "uart1_sdin";
pins = "gpio12";
};
pinctrl_uart1_sdout: uart1_sdout {
function = "uart1_sdout";
pins = "gpio13";
};
};
};
&switch0 {
dsa,member = <0 0>;
ports {
port@3 {
reg = <3>;
label = "wan";
phy-handle = <&phy12>;
phy-mode = "gmii";
};
switch0port4: port@4 {
reg = <4>;
label = "extsw";
phy-mode = "rgmii";
fixed-link {
speed = <1000>;
full-duplex;
};
};
};
};
&uart0 {
status = "okay";
};
&uart1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1>;
};
&usbh {
status = "okay";
};
&cferom {
compatible = "nvmem-cells";
#address-cells = <1>;
#size-cells = <1>;
macaddr_cferom_6a0: macaddr@6a0 {
reg = <0x6a0 0x6>;
};
};

View File

@ -0,0 +1,380 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Sercomm MSP430G2513 LEDs.
*
* Copyright 2023 Álvaro Fernández Rojas <noltari@gmail.com>
*/
#include <linux/delay.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/spi/spi.h>
#include "leds.h"
/*
* MSP430G2513 SPI protocol description:
* +----+----+----+----+----+----+
* | b1 | b2 | b3 | b4 | b5 | b6 |
* +----+----+----+----+----+----+
* 6 bytes TX & RX per transaction.
*
* LEDs:
* MSP430G2513 can control up to 9 LEDs.
* b1: LED ID [1,9]
* b2: LED function
* b3-b6: LED function parameters
*
* LED functions:
* [0] Off
* [1] On
* [2] Flash
* - b4: delay (x 6ms)
* - b5: repeat (0 = infinite)
* [3] Pulse
* - b3: delay (x 6ms)
* - b4: blink while pulsing? (unknown)
* - b5: repeat (0 = infinite)
* [4] Pulse On
* - b3: delay (x 6ms)
* - b4: blink while pulsing? (unknown)
* - b5: repeat (0 = infinite)
* [5] Pulse Off
* - b3: delay (x 6ms)
* - b4: blink while pulsing? (unknown)
* - b5: repeat (0 = infinite)
* [6] Level
* - b3: brightness [0,4]
*
* MCU Commands (b1 = 0x55):
* [0x0a] FW upgrade data
* - b3: Data size (usually 0x40), which is appended to TX & RX.
* [0x31] Get MCU version? (unknown)
* [0x68] Get MCU work mode
* [0xa5] Start FW upgrade
* [0xf0] End FW upgrade
*/
#define MSP430_CMD_BYTES 6
#define MSP430_CMD_MCU 0x55
#define MSP430_MCU_WM 0x68
#define MSP430_LED_MIN_ID 1
#define MSP430_LED_MAX_ID 9
#define MSP430_LED_OFF 0
#define MSP430_LED_ON 1
#define MSP430_LED_FLASH 2
#define MSP430_LED_PULSE 3
#define MSP430_LED_PULSE_ON 4
#define MSP430_LED_PULSE_OFF 5
#define MSP430_LED_LEVEL 6
#define MSP430_LED_BLINK_DEF 500
#define MSP430_LED_BLINK_MASK 0xff
#define MSP430_LED_BLINK_MS 6
#define MSP430_LED_BLINK_MAX (MSP430_LED_BLINK_MS * \
MSP430_LED_BLINK_MASK)
#define MSP430_LED_BRIGHTNESS_MAX 5
#define MSP430_LED_REPEAT_MAX 0xff
/**
* struct msp430_led - state container for Sercomm MSP430 based LEDs
* @cdev: LED class device for this LED
* @spi: spi resource
* @id: LED ID
*/
struct msp430_led {
struct led_classdev cdev;
struct spi_device *spi;
u8 id;
};
static inline int msp430_cmd(struct spi_device *spi, u8 tx[MSP430_CMD_BYTES],
u8 rx[MSP430_CMD_BYTES])
{
struct device *dev = &spi->dev;
int rc;
memset(rx, 0, MSP430_CMD_BYTES);
rc = spi_write_then_read(spi, tx, MSP430_CMD_BYTES,
rx, MSP430_CMD_BYTES);
if (rc)
dev_err(dev, "spi error\n");
dev_dbg(dev, "msp430_cmd: [%02x %02x %02x %02x %02x %02x]"
" -> [%02x %02x %02x %02x %02x %02x]",
tx[0], tx[1], tx[2], tx[3], tx[4], tx[5],
rx[0], rx[1], rx[2], rx[3], rx[4], rx[5]);
return rc;
}
static unsigned long msp430_blink_delay(unsigned long delay)
{
unsigned long msp430_delay;
msp430_delay = delay + MSP430_LED_BLINK_MS / 2;
msp430_delay = msp430_delay / MSP430_LED_BLINK_MS;
if (msp430_delay == 0)
msp430_delay = 1;
return msp430_delay;
}
static int msp430_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on,
unsigned long *delay_off)
{
struct msp430_led *led =
container_of(led_cdev, struct msp430_led, cdev);
u8 tx[MSP430_CMD_BYTES] = {led->id, MSP430_LED_FLASH, 0, 0, 0, 0};
u8 rx[MSP430_CMD_BYTES];
unsigned long delay;
if (!*delay_on)
*delay_on = MSP430_LED_BLINK_DEF;
if (!*delay_off)
*delay_off = MSP430_LED_BLINK_DEF;
delay = msp430_blink_delay(*delay_on);
if (delay != msp430_blink_delay(*delay_off)) {
dev_dbg(led_cdev->dev,
"fallback to soft blinking (delay_on != delay_off)\n");
return -EINVAL;
}
if (delay > MSP430_LED_BLINK_MASK) {
dev_dbg(led_cdev->dev,
"fallback to soft blinking (delay > %ums)\n",
MSP430_LED_BLINK_MAX);
return -EINVAL;
}
tx[3] = delay;
return msp430_cmd(led->spi, tx, rx);
}
static int msp430_brightness_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct msp430_led *led =
container_of(led_cdev, struct msp430_led, cdev);
u8 tx[MSP430_CMD_BYTES] = {led->id, 0, 0, 0, 0, 0};
u8 rx[MSP430_CMD_BYTES];
u8 val = (u8) brightness;
switch (val)
{
case LED_OFF:
tx[1] = MSP430_LED_OFF;
break;
case MSP430_LED_BRIGHTNESS_MAX:
tx[1] = MSP430_LED_ON;
break;
default:
tx[1] = MSP430_LED_LEVEL;
tx[2] = val - 1;
break;
}
return msp430_cmd(led->spi, tx, rx);
}
static int msp430_pattern_clear(struct led_classdev *ldev)
{
msp430_brightness_set(ldev, LED_OFF);
return 0;
}
static int msp430_pattern_set(struct led_classdev *led_cdev,
struct led_pattern *pattern,
u32 len, int repeat)
{
struct msp430_led *led =
container_of(led_cdev, struct msp430_led, cdev);
u8 tx[MSP430_CMD_BYTES] = {led->id, 0, 0, 0, 0, 0};
u8 rx[MSP430_CMD_BYTES];
unsigned long delay0;
unsigned long delay1;
int rc;
if (len != 2 ||
repeat > MSP430_LED_REPEAT_MAX ||
pattern[0].delta_t > MSP430_LED_BLINK_MAX ||
pattern[1].delta_t > MSP430_LED_BLINK_MAX)
return -EINVAL;
delay0 = msp430_blink_delay(pattern[0].delta_t);
delay1 = msp430_blink_delay(pattern[1].delta_t);
/* Pulse: <off> <delay> <max> <delay> */
if (delay0 == delay1 &&
pattern[0].brightness == LED_OFF &&
pattern[1].brightness == MSP430_LED_BRIGHTNESS_MAX)
{
tx[1] = MSP430_LED_PULSE;
tx[2] = delay0;
tx[4] = (u8) repeat;
}
/* Pulse On: <off> <delay> <max> <0ms> */
if (pattern[0].delta_t != 0 &&
pattern[1].delta_t == 0 &&
pattern[0].brightness == LED_OFF &&
pattern[1].brightness == MSP430_LED_BRIGHTNESS_MAX) {
tx[1] = MSP430_LED_PULSE_ON;
tx[2] = delay0;
tx[4] = (u8) repeat;
}
/* Pulse Off: <max> <delay> <off> <0ms> */
if (pattern[0].delta_t != 0 &&
pattern[1].delta_t == 0 &&
pattern[0].brightness == MSP430_LED_BRIGHTNESS_MAX &&
pattern[1].brightness == LED_OFF) {
tx[1] = MSP430_LED_PULSE_OFF;
tx[2] = delay0;
tx[4] = (u8) repeat;
}
if (!tx[1])
return -EINVAL;
rc = msp430_cmd(led->spi, tx, rx);
if (rc)
return rc;
return 0;
}
static int msp430_led(struct spi_device *spi, struct device_node *nc, u8 id)
{
struct device *dev = &spi->dev;
struct led_init_data init_data = {};
struct msp430_led *led;
enum led_default_state state;
int rc;
led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
if (!led)
return -ENOMEM;
led->id = id;
led->spi = spi;
init_data.fwnode = of_fwnode_handle(nc);
state = led_init_default_state_get(init_data.fwnode);
switch (state) {
case LEDS_DEFSTATE_ON:
led->cdev.brightness = MSP430_LED_BRIGHTNESS_MAX;
break;
default:
led->cdev.brightness = LED_OFF;
break;
}
msp430_brightness_set(&led->cdev, led->cdev.brightness);
led->cdev.blink_set = msp430_blink_set;
led->cdev.brightness_set_blocking = msp430_brightness_set;
led->cdev.max_brightness = MSP430_LED_BRIGHTNESS_MAX;
led->cdev.pattern_clear = msp430_pattern_clear;
led->cdev.pattern_set = msp430_pattern_set;
rc = devm_led_classdev_register_ext(dev, &led->cdev, &init_data);
if (rc < 0)
return rc;
dev_dbg(dev, "registered LED %s\n", led->cdev.name);
return 0;
}
static inline int msp430_check_workmode(struct spi_device *spi)
{
struct device *dev = &spi->dev;
u8 tx[MSP430_CMD_BYTES] = {MSP430_CMD_MCU, MSP430_MCU_WM, 0, 0, 0, 0};
u8 rx[MSP430_CMD_BYTES];
int rc;
rc = msp430_cmd(spi, tx, rx);
if (rc)
return rc;
if ((rx[3] == 0xA5 && rx[4] == 'Z') ||
(rx[4] == 0xA5 && rx[5] == 'Z') ||
(rx[4] == '\b' && rx[5] == '\n')) {
dev_err(dev, "invalid workmode: "
"[%02x %02x %02x %02x %02x %02x]\n",
rx[0], rx[1], rx[2], rx[3], rx[4], rx[5]);
return -EINVAL;
}
return 0;
}
static int msp430_leds_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct device_node *np = dev_of_node(dev);
struct device_node *child;
int rc;
rc = msp430_check_workmode(spi);
if (rc)
return rc;
for_each_available_child_of_node(np, child) {
u32 reg;
if (of_property_read_u32(child, "reg", &reg))
continue;
if (reg < MSP430_LED_MIN_ID || reg > MSP430_LED_MAX_ID) {
dev_err(dev, "invalid LED (%u) [%d, %d]\n", reg,
MSP430_LED_MIN_ID, MSP430_LED_MAX_ID);
continue;
}
rc = msp430_led(spi, child, reg);
if (rc < 0) {
of_node_put(child);
return rc;
}
}
return 0;
}
static const struct of_device_id msp430_leds_of_match[] = {
{ .compatible = "sercomm,msp430-leds", },
{ },
};
MODULE_DEVICE_TABLE(of, msp430_leds_of_match);
static const struct spi_device_id msp430_leds_id_table[] = {
{ "msp430-leds", 0 },
{ }
};
static struct spi_driver msp430_leds_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = msp430_leds_of_match,
},
.id_table = msp430_leds_id_table,
.probe = msp430_leds_probe,
};
module_spi_driver(msp430_leds_driver);
MODULE_AUTHOR("Álvaro Fernández Rojas <noltari@gmail.com>");
MODULE_DESCRIPTION("LED driver for Sercomm MSP430 controllers");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:leds-sercomm-msp430");

View File

@ -141,3 +141,23 @@ define Device/sercomm_h500-s-vfes
SERCOMM_SWVER := 3417
endef
TARGET_DEVICES += sercomm_h500-s-vfes
define Device/sercomm_shg2500
$(Device/sercomm-nand)
DEVICE_VENDOR := Sercomm
DEVICE_MODEL := SHG2500
DEVICE_LOADADDR := $(KERNEL_LOADADDR)
KERNEL := kernel-bin | append-dtb | lzma | cfe-jffs2-kernel
CHIP_ID := 63268
SOC := bcm63168
BLOCKSIZE := 128k
PAGESIZE := 2048
SUBPAGESIZE := 512
VID_HDR_OFFSET := 2048
DEVICE_PACKAGES += $(USB2_PACKAGES) kmod-i2c-gpio \
kmod-leds-sercomm-msp430
SERCOMM_FSVER := 1001
SERCOMM_HWVER := 1424e4a
SERCOMM_SWVER := 3207
endef
TARGET_DEVICES += sercomm_shg2500

View File

@ -0,0 +1,16 @@
# SPDX-License-Identifier: GPL-2.0-only
define KernelPackage/leds-sercomm-msp430
SUBMENU:=$(LEDS_MENU)
TITLE:=Sercomm MSP430G2513 LED support
KCONFIG:=CONFIG_LEDS_SERCOMM_MSP430
FILES:=$(LINUX_DIR)/drivers/leds/leds-sercomm-msp430.ko
DEPENDS:=@TARGET_bmips +kmod-ledtrig-pattern
AUTOLOAD:=$(call AutoLoad,60,leds-sercomm-msp430,1)
endef
define KernelPackage/leds-sercomm-msp430/description
Kernel support for the Sercomm MSP430G2513 SPI LED controller.
endef
$(eval $(call KernelPackage,leds-sercomm-msp430))

View File

@ -10,7 +10,8 @@ comtrend,vr-3032u)
ucidef_set_interface_lan "lan1 lan2 lan3 lan4"
;;
huawei,hg253s-v2 |\
netgear,dgnd3700-v2)
netgear,dgnd3700-v2 |\
sercomm,shg2500)
ucidef_set_bridge_device switch
ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4" "wan"
;;

View File

@ -0,0 +1,46 @@
From 1a5f2263d388016c88d39e141c7eb8085c9313fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Wed, 5 Apr 2023 08:07:00 +0200
Subject: [PATCH] leds: add support for Sercomm MSP430 LED controller
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Sercomm added an external MSP430G2513 for controlling LEDs through SPI on some
boards.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
drivers/leds/Kconfig | 9 +++++++++
drivers/leds/Makefile | 1 +
drivers/spi/spidev.c | 2 ++
3 files changed, 12 insertions(+)
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -288,6 +288,15 @@ config LEDS_COBALT_RAQ
help
This option enables support for the Cobalt Raq series LEDs.
+config LEDS_SERCOMM_MSP430
+ tristate "LED support for Sercomm MSP430 SPI LED controllers"
+ depends on LEDS_CLASS
+ depends on SPI
+ depends on OF
+ help
+ This option enables support for the Sercomm MSP430G2513 SPI LED
+ controllers.
+
config LEDS_SUNFIRE
tristate "LED support for SunFire servers."
depends on LEDS_CLASS
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -77,6 +77,7 @@ obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
obj-$(CONFIG_LEDS_REGULATOR) += leds-regulator.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_SC27XX_BLTC) += leds-sc27xx-bltc.o
+obj-$(CONFIG_LEDS_SERCOMM_MSP430) += leds-sercomm-msp430.o
obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o
obj-$(CONFIG_LEDS_SYSCON) += leds-syscon.o
obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o