Commit 94f2e945 authored by David Lechner's avatar David Lechner Committed by Sekhar Nori
Browse files

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: default avatarDavid Lechner <david@lechnology.com>
Acked-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent bdec5a6b
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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
......@@ -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);
......
......@@ -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);
......
......@@ -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
......
......@@ -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);
......
......@@ -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);
}
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