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Subject[PATCH v2 8/8] Input: olpc_apsp: allocate the GPIOs used
Date
Take the GPIO lines are used by the SP. The driver doesn't touch the
lines -- this is done to disallow anything else from fiddling with
them because that would confuse the SP firmware.

Also, the lines are now nicely visible in /sys/kernel/debug/gpio.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
drivers/input/serio/olpc_apsp.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/input/serio/olpc_apsp.c b/drivers/input/serio/olpc_apsp.c
index fe9e19014e70..287759c5f36d 100644
--- a/drivers/input/serio/olpc_apsp.c
+++ b/drivers/input/serio/olpc_apsp.c
@@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/clk.h>
+#include <linux/gpio/consumer.h>

/*
* The OLPC XO-1.75 and XO-4 laptops do not have a hardware PS/2 controller.
@@ -76,6 +77,8 @@ struct olpc_apsp {
struct serio *padio;
void __iomem *base;
struct clk *clk;
+ struct gpio_desc *clk_gpio;
+ struct gpio_desc *data_gpio;
int open_count;
int irq;
};
@@ -211,6 +214,16 @@ static int olpc_apsp_probe(struct platform_device *pdev)
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);

+ priv->clk_gpio = devm_gpiod_get_optional(&pdev->dev, "clk",
+ GPIOD_ASIS);
+ if (IS_ERR(priv->clk_gpio))
+ return PTR_ERR(priv->clk_gpio);
+
+ priv->data_gpio = devm_gpiod_get_optional(&pdev->dev, "data",
+ GPIOD_ASIS);
+ if (IS_ERR(priv->data_gpio))
+ return PTR_ERR(priv->data_gpio);
+
/* KEYBOARD */
kb_serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
if (!kb_serio)
--
2.19.0
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