ARM: davinci: remove watchdog reset

This removes the watchdog reset code. The reset has been moved to
drivers/watchdog/davinci_wdt.c. The watchdog driver registers the reset
with the kernel so defining a reset for each machine is no longer needed.

Signed-off-by: David Lechner <david@lechnology.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

18 files changed, 1 insertions, 94 deletions

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index f960cbef6538..d3ee02c12014 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -638,5 +638,4 @@ MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137/AM17x EVM")
         .init_machine   = da830_evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = da8xx_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 26bdb10a8927..b3a764feae11 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -1481,6 +1481,5 @@ MACHINE_START(DAVINCI_DA850_EVM, "DaVinci DA850/OMAP-L138/AM18x EVM")
         .init_machine   = da850_evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = da8xx_restart,
         .reserve        = da8xx_rproc_reserve_cma,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
index e457f299cd44..29dbfc944e02 100644
--- a/arch/arm/mach-davinci/board-dm355-evm.c
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -431,5 +431,4 @@ MACHINE_START(DAVINCI_DM355_EVM, "DaVinci DM355 EVM")
         .init_machine = dm355_evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c
index be997243447b..1e7e9b8f3bae 100644
--- a/arch/arm/mach-davinci/board-dm355-leopard.c
+++ b/arch/arm/mach-davinci/board-dm355-leopard.c
@@ -275,5 +275,4 @@ MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
         .init_machine = dm355_leopard_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
index e75741fb2c1d..17b2c29f4053 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -778,6 +778,5 @@ MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM")
         .init_machine   = dm365_evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
 
diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
index 85e6fb33b1ee..35e1274183e1 100644
--- a/arch/arm/mach-davinci/board-dm644x-evm.c
+++ b/arch/arm/mach-davinci/board-dm644x-evm.c
@@ -832,5 +832,4 @@ MACHINE_START(DAVINCI_EVM, "DaVinci DM644x EVM")
         .init_machine = davinci_evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index cb0a41e83582..003bbe5c24fd 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -801,7 +801,6 @@ MACHINE_START(DAVINCI_DM6467_EVM, "DaVinci DM646x EVM")
         .init_machine = evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
 
 MACHINE_START(DAVINCI_DM6467TEVM, "DaVinci DM6467T EVM")
@@ -812,6 +811,5 @@ MACHINE_START(DAVINCI_DM6467TEVM, "DaVinci DM6467T EVM")
         .init_machine = evm_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
 
diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c
index 9e7388ba413c..72748e5df43c 100644
--- a/arch/arm/mach-davinci/board-mityomapl138.c
+++ b/arch/arm/mach-davinci/board-mityomapl138.c
@@ -570,5 +570,4 @@ MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
         .init_machine   = mityomapl138_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = da8xx_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-neuros-osd2.c b/arch/arm/mach-davinci/board-neuros-osd2.c
index 4da210a1a110..51a3ae19d765 100644
--- a/arch/arm/mach-davinci/board-neuros-osd2.c
+++ b/arch/arm/mach-davinci/board-neuros-osd2.c
@@ -231,5 +231,4 @@ MACHINE_START(NEUROS_OSD2, "Neuros OSD2")
         .init_machine = davinci_ntosd2_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index baab7eb61632..ae37bc46bc8c 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -334,6 +334,5 @@ MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
         .init_machine   = omapl138_hawk_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = da8xx_restart,
         .reserve        = da8xx_rproc_reserve_cma,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/board-sffsdr.c b/arch/arm/mach-davinci/board-sffsdr.c
index d85accf7f760..1f02d4ec6144 100644
--- a/arch/arm/mach-davinci/board-sffsdr.c
+++ b/arch/arm/mach-davinci/board-sffsdr.c
@@ -154,5 +154,4 @@ MACHINE_START(SFFSDR, "Lyrtech SFFSDR")
         .init_machine = davinci_sffsdr_init,
         .init_late      = davinci_init_late,
         .dma_zone_size  = SZ_128M,
-        .restart        = davinci_restart,
 MACHINE_END
diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h
index fa2b83752e03..d7894d5aaa25 100644
--- a/arch/arm/mach-davinci/clock.h
+++ b/arch/arm/mach-davinci/clock.h
@@ -135,9 +135,6 @@ int davinci_clk_reset(struct clk *clk, bool reset);
 void davinci_clk_enable(struct clk *clk);
 void davinci_clk_disable(struct clk *clk);
 
-extern struct platform_device davinci_wdt_device;
-extern void davinci_watchdog_reset(struct platform_device *);
-
 #endif
 
 #endif
diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
index f06db6700ab2..779e8ce887c3 100644
--- a/arch/arm/mach-davinci/da8xx-dt.c
+++ b/arch/arm/mach-davinci/da8xx-dt.c
@@ -100,7 +100,6 @@ DT_MACHINE_START(DA850_DT, "Generic DA850/OMAP-L138/AM18x")
         .init_machine   = da850_init_machine,
         .dt_compat      = da850_boards_compat,
         .init_late      = davinci_init_late,
-        .restart        = da8xx_restart,
 MACHINE_END
 
 #endif
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 166bf29b1296..24422ba07cc7 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -370,19 +370,6 @@ static struct platform_device da8xx_wdt_device = {
         .resource       = da8xx_watchdog_resources,
 };
 
-void da8xx_restart(enum reboot_mode mode, const char *cmd)
-{
-        struct device *dev;
-
-        dev = bus_find_device_by_name(&platform_bus_type, NULL, "davinci-wdt");
-        if (!dev) {
-                pr_err("%s: failed to find watchdog device\n", __func__);
-                return;
-        }
-
-        davinci_watchdog_reset(to_platform_device(dev));
-}
-
 int __init da8xx_register_watchdog(void)
 {
         return platform_device_register(&da8xx_wdt_device);
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index 3ae70f2909b0..0edda4093e47 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -282,18 +282,13 @@ static struct resource wdt_resources[] = {
         },
 };
 
-struct platform_device davinci_wdt_device = {
+static struct platform_device davinci_wdt_device = {
         .name           = "davinci-wdt",
         .id             = -1,
         .num_resources  = ARRAY_SIZE(wdt_resources),
         .resource       = wdt_resources,
 };
 
-void davinci_restart(enum reboot_mode mode, const char *cmd)
-{
-        davinci_watchdog_reset(&davinci_wdt_device);
-}
-
 int davinci_init_wdt(void)
 {
         return platform_device_register(&davinci_wdt_device);
diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h
index 433a008ff796..19b9346e147e 100644
--- a/arch/arm/mach-davinci/include/mach/common.h
+++ b/arch/arm/mach-davinci/include/mach/common.h
@@ -81,7 +81,6 @@ extern struct davinci_soc_info davinci_soc_info;
 
 extern void davinci_common_init(const struct davinci_soc_info *soc_info);
 extern void davinci_init_ide(void);
-void davinci_restart(enum reboot_mode mode, const char *cmd);
 void davinci_init_late(void);
 
 #ifdef CONFIG_DAVINCI_RESET_CLOCKS
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 03f37ef4297f..fe2d77654c06 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -119,7 +119,6 @@ int da850_register_vpif_display
                         (struct vpif_display_config *display_config);
 int da850_register_vpif_capture
                         (struct vpif_capture_config *capture_config);
-void da8xx_restart(enum reboot_mode mode, const char *cmd);
 void da8xx_rproc_reserve_cma(void);
 int da8xx_register_rproc(void);
 int da850_register_gpio(void);
diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c
index 034f865fe78e..1bb991ad9c1e 100644
--- a/arch/arm/mach-davinci/time.c
+++ b/arch/arm/mach-davinci/time.c
@@ -80,13 +80,6 @@ enum {
 #define TGCR_UNRESET                 0x1
 #define TGCR_RESET_MASK              0x3
 
-#define WDTCR_WDEN_SHIFT             14
-#define WDTCR_WDEN_DISABLE           0x0
-#define WDTCR_WDEN_ENABLE            0x1
-#define WDTCR_WDKEY_SHIFT            16
-#define WDTCR_WDKEY_SEQ0             0xa5c6
-#define WDTCR_WDKEY_SEQ1             0xda7e
-
 struct timer_s {
         char *name;
         unsigned int id;
@@ -409,53 +402,3 @@ void __init davinci_timer_init(void)
         for (i=0; i< ARRAY_SIZE(timers); i++)
                 timer32_config(&timers[i]);
 }
-
-/* reset board using watchdog timer */
-void davinci_watchdog_reset(struct platform_device *pdev)
-{
-        u32 tgcr, wdtcr;
-        void __iomem *base;
-        struct clk *wd_clk;
-
-        base = ioremap(pdev->resource[0].start, SZ_4K);
-        if (WARN_ON(!base))
-                return;
-
-        wd_clk = clk_get(&pdev->dev, NULL);
-        if (WARN_ON(IS_ERR(wd_clk)))
-                return;
-        clk_prepare_enable(wd_clk);
-
-        /* disable, internal clock source */
-        __raw_writel(0, base + TCR);
-
-        /* reset timer, set mode to 64-bit watchdog, and unreset */
-        tgcr = 0;
-        __raw_writel(tgcr, base + TGCR);
-        tgcr = TGCR_TIMMODE_64BIT_WDOG << TGCR_TIMMODE_SHIFT;
-        tgcr |= (TGCR_UNRESET << TGCR_TIM12RS_SHIFT) |
-                (TGCR_UNRESET << TGCR_TIM34RS_SHIFT);
-        __raw_writel(tgcr, base + TGCR);
-
-        /* clear counter and period regs */
-        __raw_writel(0, base + TIM12);
-        __raw_writel(0, base + TIM34);
-        __raw_writel(0, base + PRD12);
-        __raw_writel(0, base + PRD34);
-
-        /* put watchdog in pre-active state */
-        wdtcr = __raw_readl(base + WDTCR);
-        wdtcr = (WDTCR_WDKEY_SEQ0 << WDTCR_WDKEY_SHIFT) |
-                (WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT);
-        __raw_writel(wdtcr, base + WDTCR);
-
-        /* put watchdog in active state */
-        wdtcr = (WDTCR_WDKEY_SEQ1 << WDTCR_WDKEY_SHIFT) |
-                (WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT);
-        __raw_writel(wdtcr, base + WDTCR);
-
-        /* write an invalid value to the WDKEY field to trigger
-         * a watchdog reset */
-        wdtcr = 0x00004000;
-        __raw_writel(wdtcr, base + WDTCR);
-}