Module Name: src
Committed By: tnn
Date: Tue Aug 3 11:30:26 UTC 2021
Modified Files:
src/sys/dev/spi: ssdfb_spi.c
Log Message:
ssdfb: support having an optional reset pin
To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 src/sys/dev/spi/ssdfb_spi.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/spi/ssdfb_spi.c
diff -u src/sys/dev/spi/ssdfb_spi.c:1.6 src/sys/dev/spi/ssdfb_spi.c:1.7
--- src/sys/dev/spi/ssdfb_spi.c:1.6 Sun Aug 1 14:56:18 2021
+++ src/sys/dev/spi/ssdfb_spi.c Tue Aug 3 11:30:25 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: ssdfb_spi.c,v 1.6 2021/08/01 14:56:18 tnn Exp $ */
+/* $NetBSD: ssdfb_spi.c,v 1.7 2021/08/03 11:30:25 tnn Exp $ */
/*
* Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ssdfb_spi.c,v 1.6 2021/08/01 14:56:18 tnn Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ssdfb_spi.c,v 1.7 2021/08/03 11:30:25 tnn Exp $");
#include <sys/param.h>
#include <sys/device.h>
@@ -55,6 +55,7 @@ struct ssdfb_spi_softc {
struct spi_handle *sc_sh;
#ifdef FDT
struct fdtbus_gpio_pin *sc_gpio_dc;
+ struct fdtbus_gpio_pin *sc_gpio_res;
#endif
bool sc_3wiremode;
};
@@ -133,13 +134,22 @@ ssdfb_spi_attach(device_t parent, device
* 4 wire mode sends 8 bit sequences and requires an auxiliary GPIO
* pin for the command/data bit.
*/
- sc->sc_3wiremode = true;
#ifdef FDT
const int phandle = sa->sa_cookie;
- sc->sc_gpio_dc = fdtbus_gpio_acquire(phandle, "dc-gpio", GPIO_PIN_OUTPUT);
+ sc->sc_gpio_dc =
+ fdtbus_gpio_acquire(phandle, "dc-gpio", GPIO_PIN_OUTPUT);
if (!sc->sc_gpio_dc)
- sc->sc_gpio_dc = fdtbus_gpio_acquire(phandle, "cd-gpio", GPIO_PIN_OUTPUT);
+ sc->sc_gpio_dc =
+ fdtbus_gpio_acquire(phandle, "cd-gpio", GPIO_PIN_OUTPUT);
sc->sc_3wiremode = (sc->sc_gpio_dc == NULL);
+ sc->sc_gpio_res =
+ fdtbus_gpio_acquire(phandle, "res-gpio", GPIO_PIN_OUTPUT);
+ if (sc->sc_gpio_res) {
+ fdtbus_gpio_write_raw(sc->sc_gpio_res, 0);
+ DELAY(100);
+ fdtbus_gpio_write_raw(sc->sc_gpio_res, 1);
+ DELAY(100);
+ }
#else
sc->sc_3wiremode = true;
#endif
