Move imxiomuxc(4) to sys/dev/fdt.

2 files changed, 167 insertions, 1 deletions

diff --git a/sys/dev/fdt/files.fdt b/sys/dev/fdt/files.fdt
index 9fb01b3e97d..1fa4e7feef0 100644
--- a/sys/dev/fdt/files.fdt
+++ b/sys/dev/fdt/files.fdt
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.fdt,v 1.55 2018/04/02 16:51:58 patrick Exp $
+#	$OpenBSD: files.fdt,v 1.56 2018/04/02 17:45:38 patrick Exp $
 #
 # Config file and device description for machine-independent FDT code.
 # Included by ports that need it.
@@ -214,6 +214,10 @@ device	imxiic: i2cbus
 attach	imxiic at fdt
 file	dev/fdt/imxiic.c		imxiic
 
+device	imxiomuxc
+attach	imxiomuxc at fdt
+file	dev/fdt/imxiomuxc.c		imxiomuxc
+
 device	imxuart
 attach	imxuart at fdt
 file	dev/fdt/imxuart.c		imxuart
diff --git a/sys/dev/fdt/imxiomuxc.c b/sys/dev/fdt/imxiomuxc.c
new file mode 100644
index 00000000000..4cdc708b2ff
--- /dev/null
+++ b/sys/dev/fdt/imxiomuxc.c
@@ -0,0 +1,162 @@
+/* $OpenBSD: imxiomuxc.c,v 1.1 2018/04/02 17:45:38 patrick Exp $ */
+/*
+ * Copyright (c) 2013 Patrick Wildt <patrick@blueri.se>
+ * Copyright (c) 2016 Mark Kettenis <kettenis@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/queue.h>
+#include <sys/malloc.h>
+#include <sys/device.h>
+#include <sys/evcount.h>
+#include <sys/socket.h>
+#include <sys/timeout.h>
+
+#include <machine/intr.h>
+#include <machine/bus.h>
+#include <machine/fdt.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_pinctrl.h>
+#include <dev/ofw/fdt.h>
+
+#define IOMUX_CONFIG_SION		(1 << 4)
+
+#define IMX_PINCTRL_NO_PAD_CTL		(1 << 31)
+#define IMX_PINCTRL_SION		(1 << 30)
+
+struct imxiomuxc_softc {
+	struct device		sc_dev;
+	bus_space_tag_t		sc_iot;
+	bus_space_handle_t	sc_ioh;
+};
+
+struct imxiomuxc_softc *imxiomuxc_sc;
+
+int	imxiomuxc_match(struct device *, void *, void *);
+void	imxiomuxc_attach(struct device *, struct device *, void *);
+
+struct cfattach imxiomuxc_ca = {
+	sizeof (struct imxiomuxc_softc), imxiomuxc_match, imxiomuxc_attach
+};
+
+struct cfdriver imxiomuxc_cd = {
+	NULL, "imxiomuxc", DV_DULL
+};
+
+int	imxiomuxc_pinctrl(uint32_t, void *);
+
+int
+imxiomuxc_match(struct device *parent, void *match, void *aux)
+{
+	struct fdt_attach_args *faa = aux;
+
+	return (OF_is_compatible(faa->fa_node, "fsl,imx6q-iomuxc") ||
+	    OF_is_compatible(faa->fa_node, "fsl,imx6dl-iomuxc") ||
+	    OF_is_compatible(faa->fa_node, "fsl,imx6sl-iomuxc") ||
+	    OF_is_compatible(faa->fa_node, "fsl,imx6sx-iomuxc") ||
+	    OF_is_compatible(faa->fa_node, "fsl,imx6ul-iomuxc"));
+}
+
+void
+imxiomuxc_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct imxiomuxc_softc *sc = (struct imxiomuxc_softc *)self;
+	struct fdt_attach_args *faa = aux;
+
+	KASSERT(faa->fa_nreg >= 1);
+
+	sc->sc_iot = faa->fa_iot;
+	if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
+	    faa->fa_reg[0].size, 0, &sc->sc_ioh))
+		panic("%s: bus_space_map failed!", __func__);
+
+	pinctrl_register(faa->fa_node, imxiomuxc_pinctrl, sc);
+	imxiomuxc_sc = sc;
+	printf("\n");
+}
+
+int
+imxiomuxc_pinctrl(uint32_t phandle, void *cookie)
+{
+	struct imxiomuxc_softc *sc = cookie;
+	char name[31];
+	uint32_t *pins;
+	int npins;
+	int node;
+	int len;
+	int i;
+
+	node = OF_getnodebyphandle(phandle);
+	if (node == 0)
+		return -1;
+
+	OF_getprop(node, "name", name, sizeof(name));
+	name[sizeof(name) - 1] = 0;
+
+	len = OF_getproplen(node, "fsl,pins");
+	if (len <= 0)
+		return -1;
+
+	pins = malloc(len, M_TEMP, M_WAITOK);
+	OF_getpropintarray(node, "fsl,pins", pins, len);
+	npins = len / (6 * sizeof(uint32_t));
+
+	for (i = 0; i < npins; i++) {
+		uint32_t mux_reg = pins[6 * i + 0];
+		uint32_t conf_reg = pins[6 * i + 1];
+		uint32_t input_reg = pins[6 * i + 2];
+		uint32_t mux_val = pins[6 * i + 3];
+		uint32_t conf_val = pins[6 * i + 5];
+		uint32_t input_val = pins[6 * i + 4];
+		uint32_t val;
+
+		/* Set MUX mode. */
+		if (conf_val & IMX_PINCTRL_SION)
+			mux_val |= IOMUX_CONFIG_SION;
+		bus_space_write_4(sc->sc_iot, sc->sc_ioh, mux_reg, mux_val);
+
+		/* Set PAD config. */
+		if ((conf_val & IMX_PINCTRL_NO_PAD_CTL) == 0)
+			bus_space_write_4(sc->sc_iot, sc->sc_ioh,
+			    conf_reg, conf_val);
+
+		/* Set input select. */
+		if ((input_val >> 24) == 0xff) {
+			/*
+			 * Magic value used to clear or set specific
+			 * bits in the general purpose registers.
+			 */
+			uint8_t shift = (input_val >> 16) & 0xff;
+			uint8_t width = (input_val >> 8) & 0xff;
+			uint32_t clr = ((1 << width) - 1) << shift;
+			uint32_t set = (input_val & 0xff) << shift;
+
+			val = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
+			    input_reg);
+			val &= ~clr;
+			val |= set;
+			bus_space_write_4(sc->sc_iot, sc->sc_ioh,
+			    input_reg, val);
+		} else if (input_reg != 0) {
+			bus_space_write_4(sc->sc_iot, sc->sc_ioh,
+			    input_reg, input_val);
+		}
+	}
+
+	free(pins, M_TEMP, len);
+	return 0;
+}