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>

diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index f960cbe..d3ee02c 100644 (file)
--- 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 26bdb10..b3a764f 100644 (file)
--- 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 e457f29..29dbfc9 100644 (file)
--- 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 be99724..1e7e9b8 100644 (file)
--- 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 e75741f..17b2c29 100644 (file)
--- 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 85e6fb3..35e1274 100644 (file)
--- 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 cb0a41e..003bbe5 100644 (file)
--- 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 9e7388b..72748e5 100644 (file)
--- 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 4da210a..51a3ae1 100644 (file)
--- 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 baab7eb..ae37bc4 100644 (file)
--- 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 d85accf..1f02d4e 100644 (file)
--- 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 fa2b837..d7894d5 100644 (file)
--- 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 f06db67..779e8ce 100644 (file)
--- 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 166bf29..24422ba 100644 (file)
--- 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 3ae70f2..0edda40 100644 (file)
--- 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 433a008..19b9346 100644 (file)
--- 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 03f37ef..fe2d776 100644 (file)
--- 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 034f865..1bb991a 100644 (file)
--- 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);
-}