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[PATCH/RFC,353/390] sh-pfc: Make GPIO support optional

Message ID 1364525119-31791-354-git-send-email-horms+renesas@verge.net.au (mailing list archive)
State New, archived
Headers show

Commit Message

Simon Horman March 29, 2013, 2:44 a.m. UTC 
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

When implemented as a separate IP block, GPIOs should be handled by a
separate driver. To make this possible GPIO support needs to be optional
in the sh-pfc driver.

If no GPIO data registers are supplied in the SoC information structure
skip registration of the gpiochip.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
(cherry picked from commit 2881fe806e7be660b7082ee4ba11ec90de538b0c)

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/pinctrl/sh-pfc/gpio.c |    3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c
index 7a54ec7..317cebb 100644
--- a/drivers/pinctrl/sh-pfc/gpio.c
+++ b/drivers/pinctrl/sh-pfc/gpio.c
@@ -354,6 +354,9 @@  int sh_pfc_register_gpiochip(struct sh_pfc *pfc)
 	unsigned int i;
 	int ret;
 
+	if (pfc->info->data_regs == NULL)
+		return 0;
+
 	/* Register the real GPIOs chip. */
 	chip = sh_pfc_add_gpiochip(pfc, gpio_pin_setup);
 	if (IS_ERR(chip))