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Commit 535e0abc authored by Russell King's avatar Russell King
Browse files

pcmcia: soc_common: add support for reset and bus enable GPIOs 



Add support to soc_common for controlling reset and bus enable GPIOs
from within the generic soc_common layer, rather than having
individual drivers having to perform this themselves.

Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
parent 7bfe4978

drivers/pcmcia/soc_common.c

+16 −0
Original line number Diff line number Diff line
@@ -119,6 +119,7 @@ static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt, 
	if (skt->ops->hw_shutdown)

		skt->ops->hw_shutdown(skt);





	clk_disable_unprepare(skt->clk);

}
@@ -286,6 +287,21 @@ static int soc_common_pcmcia_config_skt( 


	ret = skt->ops->configure_socket(skt, state);

	if (ret == 0) {

		struct gpio_desc *descs[2];

		int values[2], n = 0;



		if (skt->gpio_reset) {

			descs[n] = skt->gpio_reset;

			values[n++] = !!(state->flags & SS_RESET);

		}

		if (skt->gpio_bus_enable) {

			descs[n] = skt->gpio_bus_enable;

			values[n++] = !!(state->flags & SS_OUTPUT_ENA);

		}



		if (n)

			gpiod_set_array_value_cansleep(n, descs, values);



		/*

		 * This really needs a better solution.  The IRQ

		 * may or may not be claimed by the driver.

drivers/pcmcia/soc_common.h

+3 −0
Original line number Diff line number Diff line
@@ -62,6 +62,9 @@ struct soc_pcmcia_socket { 
#define SOC_STAT_BVD2		2	/* BATWARN / IOSPKR */

#define SOC_STAT_RDY		3	/* Ready / Interrupt */



	struct gpio_desc	*gpio_reset;

	struct gpio_desc	*gpio_bus_enable;



	unsigned int		irq_state;



	struct timer_list	poll_timer;