You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.8 KiB
83 lines
2.8 KiB
From 0ea046d777bf567cfd89c7d968c0b962e3e7589b Mon Sep 17 00:00:00 2001
|
|
From: John Crispin <blogic@openwrt.org>
|
|
Date: Wed, 11 Apr 2012 18:47:53 +0200
|
|
Subject: [PATCH 68/70] MIPS: lantiq: stp, fix for ase, add get, clock
|
|
disabled
|
|
|
|
Lantiq serial-to-parallel hardware gpio module
|
|
Added gpio pins as used for amazon se (ase)
|
|
Added get to enable reporting of gpio status
|
|
Changed to use software update, as hw clock was not running on ase. Clock
|
|
really only needed if hw flashing was implemented.
|
|
|
|
Signed-off-by: Conor O'Gorman <i@conorogorman.net>
|
|
---
|
|
arch/mips/lantiq/xway/gpio_stp.c | 22 +++++++++++++---------
|
|
1 files changed, 13 insertions(+), 9 deletions(-)
|
|
|
|
--- a/arch/mips/lantiq/xway/gpio_stp.c
|
|
+++ b/arch/mips/lantiq/xway/gpio_stp.c
|
|
@@ -27,6 +27,7 @@
|
|
#define LTQ_STP_AR 0x10
|
|
|
|
#define LTQ_STP_CON_SWU (1 << 31)
|
|
+#define LTQ_STP_SWU_MASK (1 << 31)
|
|
#define LTQ_STP_2HZ 0
|
|
#define LTQ_STP_4HZ (1 << 23)
|
|
#define LTQ_STP_8HZ (2 << 23)
|
|
@@ -60,6 +61,12 @@ static void ltq_stp_set(struct gpio_chip
|
|
else
|
|
ltq_stp_shadow &= ~(1 << offset);
|
|
ltq_stp_w32(ltq_stp_shadow, LTQ_STP_CPU0);
|
|
+ ltq_stp_w32_mask(LTQ_STP_SWU_MASK, LTQ_STP_CON_SWU, LTQ_STP_CON0);
|
|
+}
|
|
+
|
|
+static int ltq_stp_get(struct gpio_chip *chip, unsigned offset)
|
|
+{
|
|
+ return !!(ltq_stp_r32(LTQ_STP_CPU0) & (1<<offset));
|
|
}
|
|
|
|
static int ltq_stp_direction_output(struct gpio_chip *chip, unsigned offset,
|
|
@@ -74,6 +81,7 @@ static struct gpio_chip ltq_stp_chip = {
|
|
.label = "ltq_stp",
|
|
.direction_output = ltq_stp_direction_output,
|
|
.set = ltq_stp_set,
|
|
+ .get = ltq_stp_get,
|
|
.base = 200,
|
|
.ngpio = 24,
|
|
.owner = THIS_MODULE,
|
|
@@ -97,12 +105,6 @@ static int ltq_stp_hw_init(struct device
|
|
ltq_stp_w32_mask(0, LTQ_STP_GROUP0 | LTQ_STP_GROUP1 | LTQ_STP_GROUP2,
|
|
LTQ_STP_CON1);
|
|
|
|
- /* stp are update periodically by the FPI bus */
|
|
- ltq_stp_w32_mask(LTQ_STP_UPD_MASK, LTQ_STP_UPD_FPI, LTQ_STP_CON1);
|
|
-
|
|
- /* set stp update speed */
|
|
- ltq_stp_w32_mask(LTQ_STP_SPEED_MASK, LTQ_STP_8HZ, LTQ_STP_CON1);
|
|
-
|
|
/* tell the hardware that pin (led) 0 and 1 are controlled
|
|
* by the dsl arc
|
|
*/
|
|
@@ -118,6 +120,7 @@ static int __devinit ltq_stp_probe(struc
|
|
{
|
|
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
int ret = 0;
|
|
+ int pin;
|
|
|
|
if (!res)
|
|
return -ENOENT;
|
|
@@ -135,9 +138,10 @@ static int __devinit ltq_stp_probe(struc
|
|
}
|
|
|
|
/* the 3 pins used to control the external stp */
|
|
- if (ltq_gpio_request(&pdev->dev, 4, 2, 1, "stp-st") ||
|
|
- ltq_gpio_request(&pdev->dev, 5, 2, 1, "stp-d") ||
|
|
- ltq_gpio_request(&pdev->dev, 6, 2, 1, "stp-sh")) {
|
|
+ pin = ltq_is_ase() ? 1 : 4;
|
|
+ if (ltq_gpio_request(&pdev->dev, pin, 2, 1, "stp-st") ||
|
|
+ ltq_gpio_request(&pdev->dev, pin+1, 2, 1, "stp-d") ||
|
|
+ ltq_gpio_request(&pdev->dev, pin+2, 2, 1, "stp-sh")) {
|
|
dev_err(&pdev->dev, "failed to request needed gpios\n");
|
|
return -EBUSY;
|
|
}
|
|
|