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
---
.../lantiq/patches-3.2/300-fix-stp-for-ase.patch | 66
1 files changed, 66 insertions(+), 0 deletions(-)
create mode 100644 target/linux/lantiq/patches-3.2/300-fix-stp-for-ase.patch
diff --git a/target/linux/lantiq/patches-3.2/300-fix-stp-for-ase.patch
b/target/linux/lantiq/patches-3.2/300-fix-stp-for-ase.patch
new file mode 100644
index 000..42be5c8
--- /dev/null
+++ b/target/linux/lantiq/patches-3.2/300-fix-stp-for-ase.patch
@@ -0,0 +1,66 @@
+--- a/arch/mips/lantiq/xway/gpio_stp.c
b/arch/mips/lantiq/xway/gpio_stp.c
+@@ -27,6 +27,7 @@
+ #define LTQ_STP_AR0x10
+
+ #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) (1offset));
+ }
+
+ 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;
+ }
--
1.7.4.1
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