mirror of https://github.com/hak5/openwrt.git
99 lines
3.2 KiB
Diff
99 lines
3.2 KiB
Diff
From 000de5417107623925a4cf0310579f744ff43c28 Mon Sep 17 00:00:00 2001
|
|
From: Ansuel Smith <ansuelsmth@gmail.com>
|
|
Date: Tue, 4 Feb 2020 20:56:48 +0100
|
|
Subject: watchdog: qcom-wdt: disable pretimeout on timer platform
|
|
|
|
Some platform like ipq806x doesn't support pretimeout and define
|
|
some interrupts used by qcom,msm-timer. Change the driver to check
|
|
and use pretimeout only on qcom,kpss-wdt as it's the only platform
|
|
that actually supports it.
|
|
|
|
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
|
|
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
|
|
Link: https://lore.kernel.org/r/20200204195648.23350-1-ansuelsmth@gmail.com
|
|
[groeck: Conflict resolution]
|
|
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
|
|
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
|
|
---
|
|
drivers/watchdog/qcom-wdt.c | 31 +++++++++++++++++++++++--------
|
|
1 file changed, 23 insertions(+), 8 deletions(-)
|
|
|
|
--- a/drivers/watchdog/qcom-wdt.c
|
|
+++ b/drivers/watchdog/qcom-wdt.c
|
|
@@ -40,6 +40,11 @@ static const u32 reg_offset_data_kpss[]
|
|
[WDT_BITE_TIME] = 0x14,
|
|
};
|
|
|
|
+struct qcom_wdt_match_data {
|
|
+ const u32 *offset;
|
|
+ bool pretimeout;
|
|
+};
|
|
+
|
|
struct qcom_wdt {
|
|
struct watchdog_device wdd;
|
|
unsigned long rate;
|
|
@@ -179,19 +184,29 @@ static void qcom_clk_disable_unprepare(v
|
|
clk_disable_unprepare(data);
|
|
}
|
|
|
|
+static const struct qcom_wdt_match_data match_data_apcs_tmr = {
|
|
+ .offset = reg_offset_data_apcs_tmr,
|
|
+ .pretimeout = false,
|
|
+};
|
|
+
|
|
+static const struct qcom_wdt_match_data match_data_kpss = {
|
|
+ .offset = reg_offset_data_kpss,
|
|
+ .pretimeout = true,
|
|
+};
|
|
+
|
|
static int qcom_wdt_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct qcom_wdt *wdt;
|
|
struct resource *res;
|
|
struct device_node *np = dev->of_node;
|
|
- const u32 *regs;
|
|
+ const struct qcom_wdt_match_data *data;
|
|
u32 percpu_offset;
|
|
int irq, ret;
|
|
struct clk *clk;
|
|
|
|
- regs = of_device_get_match_data(dev);
|
|
- if (!regs) {
|
|
+ data = of_device_get_match_data(dev);
|
|
+ if (!data) {
|
|
dev_err(dev, "Unsupported QCOM WDT module\n");
|
|
return -ENODEV;
|
|
}
|
|
@@ -247,7 +262,7 @@ static int qcom_wdt_probe(struct platfor
|
|
|
|
/* check if there is pretimeout support */
|
|
irq = platform_get_irq_optional(pdev, 0);
|
|
- if (irq > 0) {
|
|
+ if (data->pretimeout && irq > 0) {
|
|
ret = devm_request_irq(dev, irq, qcom_wdt_isr,
|
|
IRQF_TRIGGER_RISING,
|
|
"wdt_bark", &wdt->wdd);
|
|
@@ -267,7 +282,7 @@ static int qcom_wdt_probe(struct platfor
|
|
wdt->wdd.min_timeout = 1;
|
|
wdt->wdd.max_timeout = 0x10000000U / wdt->rate;
|
|
wdt->wdd.parent = dev;
|
|
- wdt->layout = regs;
|
|
+ wdt->layout = data->offset;
|
|
|
|
if (readl(wdt_addr(wdt, WDT_STS)) & 1)
|
|
wdt->wdd.bootstatus = WDIOF_CARDRESET;
|
|
@@ -311,9 +326,9 @@ static int __maybe_unused qcom_wdt_resum
|
|
static SIMPLE_DEV_PM_OPS(qcom_wdt_pm_ops, qcom_wdt_suspend, qcom_wdt_resume);
|
|
|
|
static const struct of_device_id qcom_wdt_of_table[] = {
|
|
- { .compatible = "qcom,kpss-timer", .data = reg_offset_data_apcs_tmr },
|
|
- { .compatible = "qcom,scss-timer", .data = reg_offset_data_apcs_tmr },
|
|
- { .compatible = "qcom,kpss-wdt", .data = reg_offset_data_kpss },
|
|
+ { .compatible = "qcom,kpss-timer", .data = &match_data_apcs_tmr },
|
|
+ { .compatible = "qcom,scss-timer", .data = &match_data_apcs_tmr },
|
|
+ { .compatible = "qcom,kpss-wdt", .data = &match_data_kpss },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, qcom_wdt_of_table);
|