diff options
Diffstat (limited to 'target/linux/ramips/patches-3.18/0066-cevt.patch')
| -rw-r--r-- | target/linux/ramips/patches-3.18/0066-cevt.patch | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/target/linux/ramips/patches-3.18/0066-cevt.patch b/target/linux/ramips/patches-3.18/0066-cevt.patch deleted file mode 100644 index 9eb6cb612b..0000000000 --- a/target/linux/ramips/patches-3.18/0066-cevt.patch +++ /dev/null @@ -1,151 +0,0 @@ ---- a/arch/mips/ralink/cevt-rt3352.c -+++ b/arch/mips/ralink/cevt-rt3352.c -@@ -45,18 +45,33 @@ static void (*systick_freq_scaling)(stru - static void systick_set_clock_mode(enum clock_event_mode mode, - struct clock_event_device *evt); - -+static inline unsigned int read_count(struct systick_device *sdev) -+{ -+ return ioread32(sdev->membase + SYSTICK_COUNT); -+} -+ -+static inline unsigned int read_compare(struct systick_device *sdev) -+{ -+ return ioread32(sdev->membase + SYSTICK_COMPARE); -+} -+ -+static inline void write_compare(struct systick_device *sdev, unsigned int val) -+{ -+ iowrite32(val, sdev->membase + SYSTICK_COMPARE); -+} -+ - static int systick_next_event(unsigned long delta, - struct clock_event_device *evt) - { - struct systick_device *sdev; -- u32 count; -+ int res; - - sdev = container_of(evt, struct systick_device, dev); -- count = ioread32(sdev->membase + SYSTICK_COUNT); -- count = (count + delta) % SYSTICK_FREQ; -- iowrite32(count, sdev->membase + SYSTICK_COMPARE); -+ delta += read_count(sdev); -+ write_compare(sdev, delta); -+ res = ((int)(read_count(sdev) - delta) >= 0) ? -ETIME : 0; - -- return 0; -+ return res; - } - - static void systick_event_handler(struct clock_event_device *dev) -@@ -66,20 +81,25 @@ static void systick_event_handler(struct - - static irqreturn_t systick_interrupt(int irq, void *dev_id) - { -- struct clock_event_device *dev = (struct clock_event_device *) dev_id; -+ int ret = 0; -+ struct clock_event_device *cdev; -+ struct systick_device *sdev; - -- dev->event_handler(dev); -+ if (read_c0_cause() & STATUSF_IP7) { -+ cdev = (struct clock_event_device *) dev_id; -+ sdev = container_of(cdev, struct systick_device, dev); -+ -+ /* Clear Count/Compare Interrupt */ -+ write_compare(sdev, read_compare(sdev)); -+ cdev->event_handler(cdev); -+ ret = 1; -+ } - -- return IRQ_HANDLED; -+ return IRQ_RETVAL(ret); - } - - static struct systick_device systick = { - .dev = { -- /* -- * cevt-r4k uses 300, make sure systick -- * gets used if available -- */ -- .rating = 310, - .features = CLOCK_EVT_FEAT_ONESHOT, - .set_next_event = systick_next_event, - .set_mode = systick_set_clock_mode, -@@ -126,13 +146,14 @@ static void systick_set_clock_mode(enum - systick_freq_scaling(sdev, 1); - break; - -+ case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - if (systick_freq_scaling) - systick_freq_scaling(sdev, 0); - if (sdev->irq_requested) -- free_irq(systick.dev.irq, &systick_irqaction); -+ remove_irq(systick.dev.irq, &systick_irqaction); - sdev->irq_requested = 0; -- iowrite32(0, systick.membase + SYSTICK_CONFIG); -+ iowrite32(CFG_CNT_EN, systick.membase + SYSTICK_CONFIG); - break; - - default: -@@ -142,38 +163,45 @@ static void systick_set_clock_mode(enum - } - - static const struct of_device_id systick_match[] = { -- { .compatible = "ralink,mt7620-systick", .data = mt7620_freq_scaling}, -+ { .compatible = "ralink,mt7620a-systick", .data = mt7620_freq_scaling}, - {}, - }; - - static void __init ralink_systick_init(struct device_node *np) - { - const struct of_device_id *match; -+ int rating = 200; - - systick.membase = of_iomap(np, 0); - if (!systick.membase) - return; - - match = of_match_node(systick_match, np); -- if (match) -+ if (match) { - systick_freq_scaling = match->data; -+ /* -+ * cevt-r4k uses 300, make sure systick -+ * gets used if available -+ */ -+ rating = 310; -+ } - -- systick_irqaction.name = np->name; -- systick.dev.name = np->name; -- clockevents_calc_mult_shift(&systick.dev, SYSTICK_FREQ, 60); -- systick.dev.max_delta_ns = clockevent_delta2ns(0x7fff, &systick.dev); -- systick.dev.min_delta_ns = clockevent_delta2ns(0x3, &systick.dev); -+ /* enable counter than register clock source */ -+ iowrite32(CFG_CNT_EN, systick.membase + SYSTICK_CONFIG); -+ clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name, -+ SYSTICK_FREQ, rating, 16, clocksource_mmio_readl_up); -+ -+ /* register clock event */ - systick.dev.irq = irq_of_parse_and_map(np, 0); - if (!systick.dev.irq) { - pr_err("%s: request_irq failed", np->name); - return; - } -- -- clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name, -- SYSTICK_FREQ, 301, 16, clocksource_mmio_readl_up); -- -- clockevents_register_device(&systick.dev); -- -+ systick_irqaction.name = np->name; -+ systick.dev.name = np->name; -+ systick.dev.rating = rating; -+ systick.dev.cpumask = cpumask_of(0); -+ clockevents_config_and_register(&systick.dev, SYSTICK_FREQ, 0x3, 0x7fff); - pr_info("%s: running - mult: %d, shift: %d\n", - np->name, systick.dev.mult, systick.dev.shift); - } |