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Diffstat (limited to 'sys/dev/fdt/rkpinctrl.c')
-rw-r--r--sys/dev/fdt/rkpinctrl.c173
1 files changed, 170 insertions, 3 deletions
diff --git a/sys/dev/fdt/rkpinctrl.c b/sys/dev/fdt/rkpinctrl.c
index b4818bb9bd7..82a4d18db01 100644
--- a/sys/dev/fdt/rkpinctrl.c
+++ b/sys/dev/fdt/rkpinctrl.c
@@ -1,6 +1,6 @@
-/* $OpenBSD: rkpinctrl.c,v 1.4 2017/07/23 17:08:29 kettenis Exp $ */
+/* $OpenBSD: rkpinctrl.c,v 1.5 2018/02/25 13:26:44 kettenis Exp $ */
/*
- * Copyright (c) 2017 Mark Kettenis <kettenis@openbsd.org>
+ * Copyright (c) 2017, 2018 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
@@ -39,6 +39,9 @@
#define RK3288_GRF_GPIO1A_IOMUX 0x0000
#define RK3288_PMUGRF_GPIO0A_IOMUX 0x0084
+/* RK3328 registers */
+#define RK3328_GRF_GPIO0A_IOMUX 0x0000
+
/* RK3399 registers */
#define RK3399_GRF_GPIO2A_IOMUX 0xe000
#define RK3399_PMUGRF_GPIO0A_IOMUX 0x0000
@@ -62,6 +65,7 @@ struct cfdriver rkpinctrl_cd = {
};
int rk3288_pinctrl(uint32_t, void *);
+int rk3328_pinctrl(uint32_t, void *);
int rk3399_pinctrl(uint32_t, void *);
int
@@ -70,6 +74,7 @@ rkpinctrl_match(struct device *parent, void *match, void *aux)
struct fdt_attach_args *faa = aux;
return (OF_is_compatible(faa->fa_node, "rockchip,rk3288-pinctrl") ||
+ OF_is_compatible(faa->fa_node, "rockchip,rk3328-pinctrl") ||
OF_is_compatible(faa->fa_node, "rockchip,rk3399-pinctrl"));
}
@@ -85,13 +90,15 @@ rkpinctrl_attach(struct device *parent, struct device *self, void *aux)
sc->sc_grf = regmap_byphandle(grf);
sc->sc_pmu = regmap_byphandle(pmu);
- if (sc->sc_grf == NULL || sc->sc_pmu == NULL) {
+ if (sc->sc_grf == NULL && sc->sc_pmu == NULL) {
printf(": no registers\n");
return;
}
if (OF_is_compatible(faa->fa_node, "rockchip,rk3288-pinctrl"))
pinctrl_register(faa->fa_node, rk3288_pinctrl, sc);
+ else if (OF_is_compatible(faa->fa_node, "rockchip,rk3328-pinctrl"))
+ pinctrl_register(faa->fa_node, rk3328_pinctrl, sc);
else
pinctrl_register(faa->fa_node, rk3399_pinctrl, sc);
@@ -160,6 +167,9 @@ rk3288_pinctrl(uint32_t phandle, void *cookie)
uint32_t *pins;
int node, len, i;
+ KASSERT(sc->sc_grf);
+ KASSERT(sc->sc_pmu);
+
node = OF_getnodebyphandle(phandle);
if (node == 0)
return -1;
@@ -246,6 +256,160 @@ fail:
return -1;
}
+/*
+ * Rockchip RK3328
+ */
+
+int
+rk3328_pull(uint32_t bank, uint32_t idx, uint32_t phandle)
+{
+ int node;
+
+ node = OF_getnodebyphandle(phandle);
+ if (node == 0)
+ return -1;
+
+ if (OF_getproplen(node, "bias-disable") == 0)
+ return 0;
+ if (OF_getproplen(node, "bias-pull-up") == 0)
+ return 1;
+ if (OF_getproplen(node, "bias-pull-down") == 0)
+ return 2;
+
+ return -1;
+}
+
+int
+rk3328_strength(uint32_t bank, uint32_t idx, uint32_t phandle)
+{
+ int strength, level;
+ int levels[4] = { 2, 4, 8, 12 };
+ int node;
+
+ node = OF_getnodebyphandle(phandle);
+ if (node == 0)
+ return -1;
+
+ strength = OF_getpropint(node, "drive-strength", -1);
+ if (strength == -1)
+ return -1;
+
+ /* Convert drive strength to level. */
+ for (level = 3; level >= 0; level--) {
+ if (strength >= levels[level])
+ break;
+ }
+ return level;
+}
+
+int
+rk3328_pinctrl(uint32_t phandle, void *cookie)
+{
+ struct rkpinctrl_softc *sc = cookie;
+ uint32_t *pins;
+ int node, len, i;
+
+ KASSERT(sc->sc_grf);
+
+ node = OF_getnodebyphandle(phandle);
+ if (node == 0)
+ return -1;
+
+ len = OF_getproplen(node, "rockchip,pins");
+ if (len <= 0)
+ return -1;
+
+ pins = malloc(len, M_TEMP, M_WAITOK);
+ if (OF_getpropintarray(node, "rockchip,pins", pins, len) != len)
+ goto fail;
+
+ for (i = 0; i < len / sizeof(uint32_t); i += 4) {
+ struct regmap *rm = sc->sc_grf;
+ bus_size_t base, off;
+ uint32_t bank, idx, mux;
+ int pull, strength;
+ uint32_t mask, bits;
+ int s;
+
+ bank = pins[i];
+ idx = pins[i + 1];
+ mux = pins[i + 2];
+ pull = rk3288_pull(bank, idx, pins[i + 3]);
+ strength = rk3288_strength(bank, idx, pins[i + 3]);
+
+ if (bank > 3 || idx > 32 || mux > 3)
+ continue;
+
+ base = RK3328_GRF_GPIO0A_IOMUX;
+
+ s = splhigh();
+
+ /* IOMUX control */
+ off = bank * 0x10 + (idx / 8) * 0x04;
+
+ /* GPIO2B, GPIO2C, GPIO3A and GPIO3B are special. */
+ if (bank == 2 && idx == 15) {
+ mask = 0x7;
+ bits = mux;
+ } else if (bank == 2 && idx >= 16 && idx <= 20) {
+ mask = (0x7 << ((idx - 16) * 3));
+ bits = (mux << ((idx - 16) * 3));
+ } else if (bank == 2 && idx >= 21 && idx <= 23) {
+ mask = (0x7 << ((idx - 21) * 3));
+ bits = (mux << ((idx - 21) * 3));
+ } else if (bank == 3 && idx <= 4) {
+ mask = (0x7 << (idx * 3));
+ bits = (mux << (idx * 3));
+ } else if (bank == 3 && idx >= 5 && idx <= 7) {
+ mask = (0x7 << ((idx - 5) * 3));
+ bits = (mux << ((idx - 5) * 3));
+ } else if (bank == 3 && idx >= 8 && idx <= 12) {
+ mask = (0x7 << ((idx - 8) * 3));
+ bits = (mux << ((idx - 8) * 3));
+ } else if (bank == 3 && idx >= 13 && idx <= 15) {
+ mask = (0x7 << ((idx - 13) * 3));
+ bits = (mux << ((idx - 13) * 3));
+ } else {
+ mask = (0x3 << ((idx % 8) * 2));
+ bits = (mux << ((idx % 8) * 2));
+ }
+ if (bank > 2 || (bank == 2 && idx >= 15))
+ off += 0x04;
+ if (bank > 2 || (bank == 2 && idx >= 21))
+ off += 0x04;
+ if (bank > 3 || (bank == 3 && idx >= 5))
+ off += 0x04;
+ if (bank > 3 || (bank == 3 && idx >= 13))
+ off += 0x04;
+ regmap_write_4(rm, base + off, mask << 16 | bits);
+
+ /* GPIO pad pull down and pull up control */
+ if (pull >= 0) {
+ off = 0x100 + bank * 0x10 + (idx / 8) * 0x04;
+ mask = (0x3 << ((idx % 8) * 2));
+ bits = (pull << ((idx % 8) * 2));
+ regmap_write_4(rm, base + off, mask << 16 | bits);
+ }
+
+ /* GPIO drive strength control */
+ if (strength >= 0) {
+ off = 0x200 + bank * 0x10 + (idx / 8) * 0x04;
+ mask = (0x3 << ((idx % 8) * 2));
+ bits = (strength << ((idx % 8) * 2));
+ regmap_write_4(rm, base + off, mask << 16 | bits);
+ }
+
+ splx(s);
+ }
+
+ free(pins, M_TEMP, len);
+ return 0;
+
+fail:
+ free(pins, M_TEMP, len);
+ return -1;
+}
+
/*
* Rockchip RK3399
*/
@@ -336,6 +500,9 @@ rk3399_pinctrl(uint32_t phandle, void *cookie)
uint32_t *pins;
int node, len, i;
+ KASSERT(sc->sc_grf);
+ KASSERT(sc->sc_pmu);
+
node = OF_getnodebyphandle(phandle);
if (node == 0)
return -1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 07:53:55 +0000