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From: Gregory Bean on 26 Jul 2010 16:40
Implement the second half of the gpio_request_enable and
gpio_disable_free gpio/tlmm utility functions, now that gpiolib
has found its way to the MSM/QSD. Now these functions
actually request and free, like they claim to.

Signed-off-by: Gregory Bean <gbean(a)codeaurora.org>
---
arch/arm/mach-msm/gpio.c | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-msm/gpio.c b/arch/arm/mach-msm/gpio.c
index bc32c84..796990f 100644
--- a/arch/arm/mach-msm/gpio.c
+++ b/arch/arm/mach-msm/gpio.c
@@ -71,15 +71,47 @@ void msm_gpios_disable(const struct msm_gpio *table, int size)
}
EXPORT_SYMBOL(msm_gpios_disable);

+int msm_gpios_request(const struct msm_gpio *table, int size)
+{
+ int i, result;
+
+ for (i = 0; i < size; ++i) {
+ result = gpio_request(GPIO_PIN(table[i].gpio_cfg),
+ table[i].label);
+ if (result < 0)
+ goto err;
+ }
+
+ return 0;
+err:
+ msm_gpios_free(table, i);
+ return result;
+}
+EXPORT_SYMBOL(msm_gpios_request);
+
+void msm_gpios_free(const struct msm_gpio *table, int size)
+{
+ int i;
+
+ for (i = 0; i < size; ++i)
+ gpio_free(GPIO_PIN(table[i].gpio_cfg));
+}
+EXPORT_SYMBOL(msm_gpios_free);
+
int msm_gpios_request_enable(const struct msm_gpio *table, int size)
{
int rc = msm_gpios_enable(table, size);
+
+ if (rc == 0)
+ rc = msm_gpios_request(table, size);
+
return rc;
}
EXPORT_SYMBOL(msm_gpios_request_enable);

void msm_gpios_disable_free(const struct msm_gpio *table, int size)
{
+ msm_gpios_free(table, size);
msm_gpios_disable(table, size);
}
EXPORT_SYMBOL(msm_gpios_disable_free);
--
1.7.0.4

--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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Prev: [PATCH] vmap: add flag to allow lazy unmap to be disabled at runtime
Next: [PATCH 1/3] kbuild: allow user to assign {A,C}FLAGS_MODULE