brcm47xx: add kernel 4.4 support

[openwrt.git] / target / linux / brcm47xx / patches-4.4 / 830-huawei_e970_support.patch

diff --git a/target/linux/brcm47xx/patches-4.4/830-huawei_e970_support.patch b/target/linux/brcm47xx/patches-4.4/830-huawei_e970_support.patch
new file mode 100644 (file)
index 0000000..f67c5dd
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.4/830-huawei_e970_support.patch
@@ -0,0 +1,101 @@
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -36,6 +36,7 @@
+ #include <linux/ssb/ssb.h>
+ #include <linux/ssb/ssb_embedded.h>
+ #include <linux/bcma/bcma_soc.h>
++#include <linux/old_gpio_wdt.h>
+ #include <asm/bootinfo.h>
+ #include <asm/idle.h>
+ #include <asm/prom.h>
+@@ -262,6 +263,33 @@ static struct fixed_phy_status bcm47xx_f
+       .duplex = DUPLEX_FULL,
+ };
+ 
++static struct gpio_wdt_platform_data gpio_wdt_data;
++
++static struct platform_device gpio_wdt_device = {
++      .name                   = "gpio-wdt",
++      .id                     = 0,
++      .dev                    = {
++              .platform_data  = &gpio_wdt_data,
++      },
++};
++
++static int __init bcm47xx_register_gpio_watchdog(void)
++{
++      enum bcm47xx_board board = bcm47xx_board_get();
++
++      switch (board) {
++      case BCM47XX_BOARD_HUAWEI_E970:
++              pr_info("bcm47xx: detected Huawei E970 or similar, starting early gpio_wdt timer\n");
++              gpio_wdt_data.gpio = 7;
++              gpio_wdt_data.interval = HZ;
++              gpio_wdt_data.first_interval = HZ / 5;
++              return platform_device_register(&gpio_wdt_device);
++      default:
++              /* Nothing to do */
++              return 0;
++      }
++}
++
+ static int __init bcm47xx_register_bus_complete(void)
+ {
+       switch (bcm47xx_bus_type) {
+@@ -281,6 +309,7 @@ static int __init bcm47xx_register_bus_c
+       bcm47xx_workarounds();
+ 
+       fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status, -1);
++      bcm47xx_register_gpio_watchdog();
+       return 0;
+ }
+ device_initcall(bcm47xx_register_bus_complete);
+--- a/arch/mips/configs/bcm47xx_defconfig
++++ b/arch/mips/configs/bcm47xx_defconfig
+@@ -67,6 +67,7 @@ CONFIG_HW_RANDOM=y
+ CONFIG_GPIO_SYSFS=y
+ CONFIG_WATCHDOG=y
+ CONFIG_BCM47XX_WDT=y
++CONFIG_GPIO_WDT=y
+ CONFIG_SSB_DEBUG=y
+ CONFIG_SSB_DRIVER_GIGE=y
+ CONFIG_BCMA_DRIVER_GMAC_CMN=y
+--- a/drivers/ssb/embedded.c
++++ b/drivers/ssb/embedded.c
+@@ -34,11 +34,36 @@ int ssb_watchdog_timer_set(struct ssb_bu
+ }
+ EXPORT_SYMBOL(ssb_watchdog_timer_set);
+ 
++#ifdef CONFIG_BCM47XX
++#include <bcm47xx_board.h>
++
++static bool ssb_watchdog_supported(void)
++{
++      enum bcm47xx_board board = bcm47xx_board_get();
++
++      /* The Huawei E970 has a hardware watchdog using a GPIO */
++      switch (board) {
++      case BCM47XX_BOARD_HUAWEI_E970:
++              return false;
++      default:
++              return true;
++      }
++}
++#else
++static bool ssb_watchdog_supported(void)
++{
++      return true;
++}
++#endif
++
+ int ssb_watchdog_register(struct ssb_bus *bus)
+ {
+       struct bcm47xx_wdt wdt = {};
+       struct platform_device *pdev;
+ 
++      if (!ssb_watchdog_supported())
++              return 0;
++
+       if (ssb_chipco_available(&bus->chipco)) {
+               wdt.driver_data = &bus->chipco;
+               wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;