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- From 5d7f8473e3472c16703bf5692d0b13f47d08c70a Mon Sep 17 00:00:00 2001
- From: Shaohui Xie <Shaohui.Xie@freescale.com>
- Date: Fri, 22 Jan 2016 12:01:28 +0800
- Subject: [PATCH 37/70] ls1043a: Add support for reset
- The reset in ls1043a is similar to ls2085a, but accessed in big endian,
- so we modify the existing driver to handle endianness, if driver probes
- property 'big-endian' in DTS, driver works in big endian mode,
- otherwise, driver works in little endian by default.
- Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
- ---
- drivers/power/reset/ls-reboot.c | 18 +++++++++++++++---
- 1 file changed, 15 insertions(+), 3 deletions(-)
- --- a/drivers/power/reset/ls-reboot.c
- +++ b/drivers/power/reset/ls-reboot.c
- @@ -28,6 +28,7 @@
- struct ls_reboot_priv {
- struct device *dev;
- u32 *rstcr;
- + bool is_big_endian;
- };
-
- static struct ls_reboot_priv *ls_reboot_priv;
- @@ -39,9 +40,15 @@ static void ls_reboot(enum reboot_mode r
- unsigned long timeout;
-
- if (ls_reboot_priv) {
- - val = readl(priv->rstcr);
- - val |= 0x02;
- - writel(val, priv->rstcr);
- + if (priv->is_big_endian) {
- + val = ioread32be(priv->rstcr);
- + val |= 0x02;
- + iowrite32be(val, priv->rstcr);
- + } else {
- + val = readl(priv->rstcr);
- + val |= 0x02;
- + writel(val, priv->rstcr);
- + }
- }
-
- timeout = jiffies + HZ;
- @@ -66,6 +73,11 @@ static int ls_reboot_probe(struct platfo
- return -ENODEV;
- }
-
- + if (of_get_property(pdev->dev.of_node, "big-endian", NULL))
- + ls_reboot_priv->is_big_endian = true;
- + else
- + ls_reboot_priv->is_big_endian = false;
- +
- ls_reboot_priv->dev = &pdev->dev;
-
- arm_pm_restart = ls_reboot;
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