diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap2-git/beagleboard/04-gptimer_add_debug_to_sysrq_q')
| -rw-r--r-- | meta/recipes-kernel/linux/linux-omap2-git/beagleboard/04-gptimer_add_debug_to_sysrq_q | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/04-gptimer_add_debug_to_sysrq_q b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/04-gptimer_add_debug_to_sysrq_q new file mode 100644 index 0000000000..aa9f09811a --- /dev/null +++ b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/04-gptimer_add_debug_to_sysrq_q @@ -0,0 +1,110 @@ +Add extra debug for the q_d_w_o() when work fn is already active. + +From: Paul Walmsley <paul@pwsan.com> + + +--- + + arch/arm/mach-omap2/timer-gp.c | 3 ++- + arch/arm/plat-omap/dmtimer.c | 20 ++++++++++++++++++++ + include/asm-arm/arch-omap/dmtimer.h | 1 + + kernel/time/timer_list.c | 8 ++++++++ + 4 files changed, 31 insertions(+), 1 deletions(-) + +diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c +index ce5c2b4..e3ed368 100644 +--- a/arch/arm/mach-omap2/timer-gp.c ++++ b/arch/arm/mach-omap2/timer-gp.c +@@ -50,6 +50,7 @@ + #define GPTIMER_MATCH_VAL (0xffffffff - (32768/2)) + + static struct omap_dm_timer *gptimer; ++struct omap_dm_timer *gptimer_pub; + static struct clock_event_device clockevent_gpt; + + static u32 last_load; +@@ -111,7 +112,7 @@ static void __init omap2_gp_clockevent_init(void) + { + u32 tick_rate; + +- gptimer = omap_dm_timer_request_specific(1); ++ gptimer = gptimer_pub = omap_dm_timer_request_specific(1); + BUG_ON(gptimer == NULL); + + #if defined(CONFIG_OMAP_32K_TIMER) +diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c +index e38a11e..b10f8ac 100644 +--- a/arch/arm/plat-omap/dmtimer.c ++++ b/arch/arm/plat-omap/dmtimer.c +@@ -614,6 +614,26 @@ void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, + omap_dm_timer_write_reg(timer, OMAP_TIMER_WAKEUP_EN_REG, value); + } + ++void omap_dm_timer_dump_int_enable(struct omap_dm_timer *timer) ++{ ++ u32 l; ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_COUNTER_REG); ++ pr_err("GPT TCRR: %08x\n", l); ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_MATCH_REG); ++ pr_err("GPT TMAT: %08x\n", l); ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_STAT_REG); ++ pr_err("GPT TISR: %08x\n", l); ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_INT_EN_REG); ++ pr_err("GPT TIER: %08x\n", l); ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG); ++ pr_err("GPT TCLR: %08x\n", l); ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_TICK_INT_MASK_SET_REG); ++ pr_err("GPT TOCR: %08x\n", l); ++ l = omap_dm_timer_read_reg(timer, OMAP_TIMER_TICK_INT_MASK_COUNT_REG); ++ pr_err("GPT TOWR: %08x\n", l); ++} ++ ++ + unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer) + { + unsigned int l; +diff --git a/include/asm-arm/arch-omap/dmtimer.h b/include/asm-arm/arch-omap/dmtimer.h +index 02b29e8..a8123e9 100644 +--- a/include/asm-arm/arch-omap/dmtimer.h ++++ b/include/asm-arm/arch-omap/dmtimer.h +@@ -73,6 +73,7 @@ void omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler); + + void omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value); + ++void omap_dm_timer_dump_int_enable(struct omap_dm_timer *timer); + unsigned int omap_dm_timer_read_status(struct omap_dm_timer *timer); + void omap_dm_timer_write_status(struct omap_dm_timer *timer, unsigned int value); + unsigned int omap_dm_timer_read_counter(struct omap_dm_timer *timer); +diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c +index a40e20f..452eab7 100644 +--- a/kernel/time/timer_list.c ++++ b/kernel/time/timer_list.c +@@ -18,6 +18,8 @@ + #include <linux/kallsyms.h> + #include <linux/tick.h> + ++#include <asm/arch/dmtimer.h> ++ + #include <asm/uaccess.h> + + typedef void (*print_fn_t)(struct seq_file *m, unsigned int *classes); +@@ -239,6 +241,8 @@ static void timer_list_show_tickdevices(struct seq_file *m) + static void timer_list_show_tickdevices(struct seq_file *m) { } + #endif + ++extern struct omap_dm_timer *gptimer_pub; ++ + static int timer_list_show(struct seq_file *m, void *v) + { + u64 now = ktime_to_ns(ktime_get()); +@@ -254,6 +258,10 @@ static int timer_list_show(struct seq_file *m, void *v) + SEQ_printf(m, "\n"); + timer_list_show_tickdevices(m); + ++ SEQ_printf(m, "\n"); ++ ++ omap_dm_timer_dump_int_enable(gptimer_pub); ++ + return 0; + } + |