Commit 4d3e55bc authored by Alberto Panizzo's avatar Alberto Panizzo Committed by Lee Jones
Browse files

mfd: wm8994: Allow to configure CS/ADDR Pulldown from dts 



For designs where CS/ADDR pin is floating, it is useful to
allow dts to define whether to keep internal pull down or not.

Signed-off-by: default avatarAlberto Panizzo <alberto@amarulasolutions.com>
Signed-off-by: default avatarAnthony Brandon <anthony@amarulasolutions.com>
Acked-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 102370fb

drivers/mfd/wm8994-core.c

+4 −0
Original line number Diff line number Diff line
@@ -304,6 +304,8 @@ static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) 


	pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu");



	pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd");



	pdata->ldo[0].enable = of_get_named_gpio(np, "wlf,ldo1ena", 0);

	if (pdata->ldo[0].enable < 0)

		pdata->ldo[0].enable = 0;
@@ -562,6 +564,8 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) 


	if (pdata->spkmode_pu)

		pulls |= WM8994_SPKMODE_PU;

	if (pdata->csnaddr_pd)

		pulls |= WM8994_CSNADDR_PD;



	/* Disable unneeded pulls */

	wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,

include/linux/mfd/wm8994/pdata.h

+6 −0
Original line number Diff line number Diff line
@@ -222,6 +222,12 @@ struct wm8994_pdata { 
	 */

	bool spkmode_pu;



	/*

	 * CS/ADDR must be pulled internally by the device on this

	 * system.

	 */

	bool csnaddr_pd;



	/**

	 * Maximum number of channels clocks will be generated for,

	 * useful for systems where and I2S bus with multiple data

CRA Git | Maintained and supported by SUSTech CRA and CCSE