diff options
Diffstat (limited to 'packages/kexecboot/linux-kexecboot-2.6.24/tosa/0056-Support-resetting-by-asserting-GPIO-pin.patch')
| -rw-r--r-- | packages/kexecboot/linux-kexecboot-2.6.24/tosa/0056-Support-resetting-by-asserting-GPIO-pin.patch | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0056-Support-resetting-by-asserting-GPIO-pin.patch b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0056-Support-resetting-by-asserting-GPIO-pin.patch deleted file mode 100644 index 99220f9200..0000000000 --- a/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0056-Support-resetting-by-asserting-GPIO-pin.patch +++ /dev/null @@ -1,126 +0,0 @@ -From e039614a0ce6df645f8fa4cbe32e4b21fe46a288 Mon Sep 17 00:00:00 2001 -From: Dmitry Baryshkov <dbaryshkov@gmail.com> -Date: Sun, 20 Jan 2008 02:44:03 +0300 -Subject: [PATCH 56/64] Support resetting by asserting GPIO pin - -This adds support for resetting via assertion of GPIO pin. -This e.g. is used on Sharp Zaurus SL-6000. - -Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> ---- - arch/arm/mach-pxa/gpio.c | 43 +++++++++++++++++++++++++++++++++++++ - arch/arm/mach-pxa/pm.c | 4 +- - include/asm-arm/arch-pxa/system.h | 10 ++++++++ - 3 files changed, 55 insertions(+), 2 deletions(-) - -diff --git a/arch/arm/mach-pxa/gpio.c b/arch/arm/mach-pxa/gpio.c -index 8638dd7..589da3b 100644 ---- a/arch/arm/mach-pxa/gpio.c -+++ b/arch/arm/mach-pxa/gpio.c -@@ -19,6 +19,7 @@ - #include <asm/hardware.h> - #include <asm/io.h> - #include <asm/arch/pxa-regs.h> -+#include <asm/arch/system.h> - - #include "generic.h" - -@@ -194,4 +195,46 @@ void __init pxa_init_gpio(int gpio_nr) - pxa_gpio_chip[i/32].chip.ngpio = gpio_nr - i; - gpiochip_add(&pxa_gpio_chip[i/32].chip); - } -+ -+ if (reset_gpio < gpio_nr) -+ init_reset_gpio(); -+} -+ -+int reset_gpio = -1; -+static int __init reset_gpio_setup(char *str) -+{ -+ if (get_option(&str, &reset_gpio) != 1) { -+ printk(KERN_ERR "reset_gpio: bad value secified"); -+ return 0; -+ } -+ -+ return 1; -+} -+ -+__setup("reset_gpio=", reset_gpio_setup); -+ -+int init_reset_gpio(void) -+{ -+ int rc = 0; -+ if (reset_gpio == -1) -+ goto out; -+ -+ rc = gpio_request(reset_gpio, "reset generator"); -+ if (rc) { -+ printk(KERN_ERR "Can't request reset_gpio\n"); -+ goto out; -+ } -+ -+ rc = gpio_direction_input(reset_gpio); -+ if (rc) { -+ printk(KERN_ERR "Can't configure reset_gpio for input\n"); -+ gpio_free(reset_gpio); -+ goto out; -+ } -+ -+out: -+ if (rc) -+ reset_gpio = -1; -+ -+ return rc; - } -diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c -index a941c71..64f37e5 100644 ---- a/arch/arm/mach-pxa/pm.c -+++ b/arch/arm/mach-pxa/pm.c -@@ -40,8 +40,8 @@ int pxa_pm_enter(suspend_state_t state) - - pxa_cpu_pm_fns->save(sleep_save); - -- /* Clear sleep reset status */ -- RCSR = RCSR_SMR; -+ /* Clear reset status */ -+ RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; - - /* before sleeping, calculate and save a checksum */ - for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++) -diff --git a/include/asm-arm/arch-pxa/system.h b/include/asm-arm/arch-pxa/system.h -index 1d56a3e..c075018 100644 ---- a/include/asm-arm/arch-pxa/system.h -+++ b/include/asm-arm/arch-pxa/system.h -@@ -11,6 +11,7 @@ - */ - - #include <asm/proc-fns.h> -+#include <asm/gpio.h> - #include "hardware.h" - #include "pxa-regs.h" - -@@ -19,12 +20,21 @@ static inline void arch_idle(void) - cpu_do_idle(); - } - -+extern int reset_gpio; -+ -+int init_reset_gpio(void); - - static inline void arch_reset(char mode) - { -+ RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; -+ - if (mode == 's') { - /* Jump into ROM at address 0 */ - cpu_reset(0); -+ } else if (mode == 'g' && reset_gpio != -1) { -+ /* Use GPIO reset */ -+ gpio_direction_output(reset_gpio, 0); -+ gpio_set_value(reset_gpio, 1); - } else { - /* Initialize the watchdog and let it fire */ - OWER = OWER_WME; --- -1.5.3.8 - |