From: Atsushi Nemoto Date: Fri, 23 Nov 2007 16:20:27 +0000 (+0900) Subject: [MIPS] TXx9 watchdog support for rbhma3100,rbhma4200,rbhma4500 X-Git-Tag: v2.6.25-rc1~1163^2~42 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2064ba23e58daa929eec6f5e7a2abc24574a95b9;p=linux-2.6 [MIPS] TXx9 watchdog support for rbhma3100,rbhma4200,rbhma4500 This patch adds support for txx9wdt driver to rbhma3100, rbhma4200 and rbhma4500 platform. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- diff --git a/arch/mips/configs/jmr3927_defconfig b/arch/mips/configs/jmr3927_defconfig index eb96791c33..4ace378389 100644 --- a/arch/mips/configs/jmr3927_defconfig +++ b/arch/mips/configs/jmr3927_defconfig @@ -464,7 +464,6 @@ CONFIG_SERIAL_TXX9_STDSERIAL=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 # CONFIG_IPMI_HANDLER is not set -# CONFIG_WATCHDOG is not set # CONFIG_HW_RANDOM is not set # CONFIG_RTC is not set # CONFIG_R3964 is not set @@ -482,6 +481,20 @@ CONFIG_DEVPORT=y # CONFIG_W1 is not set # CONFIG_POWER_SUPPLY is not set # CONFIG_HWMON is not set +CONFIG_WATCHDOG=y +# CONFIG_WATCHDOG_NOWAYOUT is not set + +# +# Watchdog Device Drivers +# +# CONFIG_SOFT_WATCHDOG is not set +CONFIG_TXX9_WDT=y + +# +# PCI-based Watchdog Cards +# +# CONFIG_PCIPCWATCHDOG is not set +# CONFIG_WDTPCI is not set # # Multifunction device drivers diff --git a/arch/mips/configs/rbhma4200_defconfig b/arch/mips/configs/rbhma4200_defconfig index 9383a59809..a67c698a82 100644 --- a/arch/mips/configs/rbhma4200_defconfig +++ b/arch/mips/configs/rbhma4200_defconfig @@ -431,7 +431,6 @@ CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 # CONFIG_IPMI_HANDLER is not set -# CONFIG_WATCHDOG is not set # CONFIG_HW_RANDOM is not set # CONFIG_RTC is not set # CONFIG_R3964 is not set @@ -449,6 +448,20 @@ CONFIG_DEVPORT=y # CONFIG_W1 is not set # CONFIG_POWER_SUPPLY is not set # CONFIG_HWMON is not set +CONFIG_WATCHDOG=y +# CONFIG_WATCHDOG_NOWAYOUT is not set + +# +# Watchdog Device Drivers +# +# CONFIG_SOFT_WATCHDOG is not set +CONFIG_TXX9_WDT=m + +# +# PCI-based Watchdog Cards +# +# CONFIG_PCIPCWATCHDOG is not set +# CONFIG_WDTPCI is not set # # Multifunction device drivers diff --git a/arch/mips/configs/rbhma4500_defconfig b/arch/mips/configs/rbhma4500_defconfig index d1b56cc0fd..ebc8ad4c64 100644 --- a/arch/mips/configs/rbhma4500_defconfig +++ b/arch/mips/configs/rbhma4500_defconfig @@ -450,7 +450,6 @@ CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 # CONFIG_IPMI_HANDLER is not set -# CONFIG_WATCHDOG is not set # CONFIG_HW_RANDOM is not set # CONFIG_RTC is not set # CONFIG_R3964 is not set @@ -479,6 +478,20 @@ CONFIG_SPI_AT25=y # CONFIG_W1 is not set # CONFIG_POWER_SUPPLY is not set # CONFIG_HWMON is not set +CONFIG_WATCHDOG=y +# CONFIG_WATCHDOG_NOWAYOUT is not set + +# +# Watchdog Device Drivers +# +# CONFIG_SOFT_WATCHDOG is not set +CONFIG_TXX9_WDT=m + +# +# PCI-based Watchdog Cards +# +# CONFIG_PCIPCWATCHDOG is not set +# CONFIG_WDTPCI is not set # # Multifunction device drivers diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c index 75cfe65590..c886d804d3 100644 --- a/arch/mips/jmr3927/rbhma3100/setup.c +++ b/arch/mips/jmr3927/rbhma3100/setup.c @@ -35,6 +35,7 @@ #include #include #include +#include #ifdef CONFIG_SERIAL_TXX9 #include #endif @@ -233,6 +234,8 @@ static void __init tx3927_setup(void) tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW; /* Disable PCI snoop */ tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP; + /* do reset on watchdog */ + tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR; #ifdef DO_WRITE_THROUGH /* Enable PCI SNOOP - with write through only */ @@ -383,3 +386,55 @@ static int __init jmr3927_rtc_init(void) return IS_ERR(dev) ? PTR_ERR(dev) : 0; } device_initcall(jmr3927_rtc_init); + +/* Watchdog support */ + +static int __init txx9_wdt_init(unsigned long base) +{ + struct resource res = { + .start = base, + .end = base + 0x100 - 1, + .flags = IORESOURCE_MEM, + }; + struct platform_device *dev = + platform_device_register_simple("txx9wdt", -1, &res, 1); + return IS_ERR(dev) ? PTR_ERR(dev) : 0; +} + +static int __init jmr3927_wdt_init(void) +{ + return txx9_wdt_init(TX3927_TMR_REG(2)); +} +device_initcall(jmr3927_wdt_init); + +/* Minimum CLK support */ + +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "imbus_clk")) + return (struct clk *)JMR3927_IMCLK; + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return (unsigned long)clk; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); diff --git a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c index c29a528323..e466e5e711 100644 --- a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c +++ b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c @@ -50,6 +50,7 @@ #include #include #include +#include #include #include @@ -803,6 +804,8 @@ void __init plat_mem_setup(void) } /* CCFG */ + /* do reset on watchdog */ + tx4927_ccfgptr->ccfg |= TX4927_CCFG_WR; /* enable Timeout BusError */ if (tx4927_ccfg_toeon) tx4927_ccfgptr->ccfg |= TX4927_CCFG_TOE; @@ -944,3 +947,55 @@ static int __init rbtx4927_ne_init(void) return IS_ERR(dev) ? PTR_ERR(dev) : 0; } device_initcall(rbtx4927_ne_init); + +/* Watchdog support */ + +static int __init txx9_wdt_init(unsigned long base) +{ + struct resource res = { + .start = base, + .end = base + 0x100 - 1, + .flags = IORESOURCE_MEM, + }; + struct platform_device *dev = + platform_device_register_simple("txx9wdt", -1, &res, 1); + return IS_ERR(dev) ? PTR_ERR(dev) : 0; +} + +static int __init rbtx4927_wdt_init(void) +{ + return txx9_wdt_init(TX4927_TMR_REG(2) & 0xfffffffffULL); +} +device_initcall(rbtx4927_wdt_init); + +/* Minimum CLK support */ + +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "imbus_clk")) + return (struct clk *)50000000; + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return (unsigned long)clk; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); diff --git a/arch/mips/tx4938/toshiba_rbtx4938/setup.c b/arch/mips/tx4938/toshiba_rbtx4938/setup.c index 2333d9ff87..61249f049c 100644 --- a/arch/mips/tx4938/toshiba_rbtx4938/setup.c +++ b/arch/mips/tx4938/toshiba_rbtx4938/setup.c @@ -724,6 +724,8 @@ void __init tx4938_board_setup(void) /* CCFG */ /* clear WatchDogReset,BusErrorOnWrite flag (W1C) */ tx4938_ccfgptr->ccfg |= TX4938_CCFG_WDRST | TX4938_CCFG_BEOW; + /* do reset on watchdog */ + tx4938_ccfgptr->ccfg |= TX4938_CCFG_WR; /* clear PCIC1 reset */ if (tx4938_ccfgptr->clkctr & TX4938_CLKCTR_PCIC1RST) tx4938_ccfgptr->clkctr &= ~TX4938_CLKCTR_PCIC1RST; @@ -1121,12 +1123,35 @@ static int __init rbtx4938_spi_init(void) } arch_initcall(rbtx4938_spi_init); +/* Watchdog support */ + +static int __init txx9_wdt_init(unsigned long base) +{ + struct resource res = { + .start = base, + .end = base + 0x100 - 1, + .flags = IORESOURCE_MEM, + .parent = &tx4938_reg_resource, + }; + struct platform_device *dev = + platform_device_register_simple("txx9wdt", -1, &res, 1); + return IS_ERR(dev) ? PTR_ERR(dev) : 0; +} + +static int __init rbtx4938_wdt_init(void) +{ + return txx9_wdt_init(TX4938_TMR_REG(2) & 0xfffffffffULL); +} +device_initcall(rbtx4938_wdt_init); + /* Minimum CLK support */ struct clk *clk_get(struct device *dev, const char *id) { if (!strcmp(id, "spi-baseclk")) return (struct clk *)(txx9_gbus_clock / 2 / 4); + if (!strcmp(id, "imbus_clk")) + return (struct clk *)(txx9_gbus_clock / 2); return ERR_PTR(-ENOENT); } EXPORT_SYMBOL(clk_get); diff --git a/include/asm-mips/tx4927/tx4927_pci.h b/include/asm-mips/tx4927/tx4927_pci.h index 3f1e470192..0be77df70f 100644 --- a/include/asm-mips/tx4927/tx4927_pci.h +++ b/include/asm-mips/tx4927/tx4927_pci.h @@ -9,6 +9,7 @@ #define __ASM_TX4927_TX4927_PCI_H #define TX4927_CCFG_TOE 0x00004000 +#define TX4927_CCFG_WR 0x00008000 #define TX4927_CCFG_TINTDIS 0x01000000 #define TX4927_PCIMEM 0x08000000