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Commit 4c1ce07b authored by Uri Mashiach's avatar Uri Mashiach Committed by Kalle Valo
Browse files

wlcore/wl12xx: spi: add power operation function 



The power function uses a consumer regulator access to update the WiFi
enable GPIO value.

Signed-off-by: default avatarUri Mashiach <uri.mashiach@compulab.co.il>
Tested-By: default avatarSebastian Reichel <sre@kernel.org>
Reviewed-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
Acked-by: default avatarIgor Grinberg <grinberg@compulab.co.il>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 7a26019f

drivers/net/wireless/ti/wlcore/spi.c

+39 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <linux/spi/spi.h>

#include <linux/wl12xx.h>

#include <linux/platform_device.h>

#include <linux/regulator/consumer.h>



#include "wlcore.h"

#include "wl12xx_80211.h"
@@ -81,6 +82,7 @@ 
struct wl12xx_spi_glue {

	struct device *dev;

	struct platform_device *core;

	struct regulator *reg; /* Power regulator */

};



static void wl12xx_spi_reset(struct device *child)
@@ -318,11 +320,40 @@ static int __must_check wl12xx_spi_raw_write(struct device *child, int addr, 
	return 0;

}



/**

 * wl12xx_spi_set_power - power on/off the wl12xx unit

 * @child: wl12xx device handle.

 * @enable: true/false to power on/off the unit.

 *

 * use the WiFi enable regulator to enable/disable the WiFi unit.

 */

static int wl12xx_spi_set_power(struct device *child, bool enable)

{

	int ret = 0;

	struct wl12xx_spi_glue *glue = dev_get_drvdata(child->parent);



	WARN_ON(!glue->reg);



	/* Update regulator state */

	if (enable) {

		ret = regulator_enable(glue->reg);

		if (ret)

			dev_err(child, "Power enable failure\n");

	} else {

		ret =  regulator_disable(glue->reg);

		if (ret)

			dev_err(child, "Power disable failure\n");

	}



	return ret;

}



static struct wl1271_if_operations spi_ops = {

	.read		= wl12xx_spi_raw_read,

	.write		= wl12xx_spi_raw_write,

	.reset		= wl12xx_spi_reset,

	.init		= wl12xx_spi_init,

	.power		= wl12xx_spi_set_power,

	.set_block_size = NULL,

};
@@ -353,6 +384,14 @@ static int wl1271_probe(struct spi_device *spi) 
	 * comes from the board-peripherals file */

	spi->bits_per_word = 32;



	glue->reg = devm_regulator_get(&spi->dev, "vwlan");

	if (PTR_ERR(glue->reg) == -EPROBE_DEFER)

		return -EPROBE_DEFER;

	if (IS_ERR(glue->reg)) {

		dev_err(glue->dev, "can't get regulator\n");

		return PTR_ERR(glue->reg);

	}



	ret = spi_setup(spi);

	if (ret < 0) {

		dev_err(glue->dev, "spi_setup failed\n");