1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1111_jornada720.c b/drivers/pcmcia/sa1111_jornada720.c
new file mode 100644
index 000000000..1083e1b4f
--- /dev/null
+++ b/drivers/pcmcia/sa1111_jornada720.c
@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * drivers/pcmcia/sa1100_jornada720.c
+ *
+ * Jornada720 PCMCIA specific routines
+ *
+ */
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/gpio/consumer.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+
+#include "sa1111_generic.h"
+
+/*
+ * Socket 0 power: GPIO A0
+ * Socket 0 3V: GPIO A2
+ * Socket 1 power: GPIO A1 & GPIO A3
+ * Socket 1 3V: GPIO A3
+ * Does Socket 1 3V actually do anything?
+ */
+enum {
+	J720_GPIO_PWR,
+	J720_GPIO_3V,
+	J720_GPIO_MAX,
+};
+struct jornada720_data {
+	struct gpio_desc *gpio[J720_GPIO_MAX];
+};
+
+static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	struct device *dev = skt->socket.dev.parent;
+	struct jornada720_data *j;
+
+	j = devm_kzalloc(dev, sizeof(*j), GFP_KERNEL);
+	if (!j)
+		return -ENOMEM;
+
+	j->gpio[J720_GPIO_PWR] = devm_gpiod_get(dev, skt->nr ? "s1-power" :
+						"s0-power", GPIOD_OUT_LOW);
+	if (IS_ERR(j->gpio[J720_GPIO_PWR]))
+		return PTR_ERR(j->gpio[J720_GPIO_PWR]);
+
+	j->gpio[J720_GPIO_3V] = devm_gpiod_get(dev, skt->nr ? "s1-3v" :
+					       "s0-3v", GPIOD_OUT_LOW);
+	if (IS_ERR(j->gpio[J720_GPIO_3V]))
+		return PTR_ERR(j->gpio[J720_GPIO_3V]);
+
+	skt->driver_data = j;
+
+	return 0;
+}
+
+static int
+jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+	struct jornada720_data *j = skt->driver_data;
+	DECLARE_BITMAP(values, J720_GPIO_MAX) = { 0, };
+	int ret;
+
+	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
+		skt->nr, state->Vcc, state->Vpp);
+
+	switch (skt->nr) {
+	case 0:
+		switch (state->Vcc) {
+		default:
+		case  0:
+			__assign_bit(J720_GPIO_PWR, values, 0);
+			__assign_bit(J720_GPIO_3V, values, 0);
+			break;
+		case 33:
+			__assign_bit(J720_GPIO_PWR, values, 1);
+			__assign_bit(J720_GPIO_3V, values, 1);
+			break;
+		case 50:
+			__assign_bit(J720_GPIO_PWR, values, 1);
+			__assign_bit(J720_GPIO_3V, values, 0);
+			break;
+		}
+		break;
+
+	case 1:
+		switch (state->Vcc) {
+		default:
+		case 0:
+			__assign_bit(J720_GPIO_PWR, values, 0);
+			__assign_bit(J720_GPIO_3V, values, 0);
+			break;
+		case 33:
+		case 50:
+			__assign_bit(J720_GPIO_PWR, values, 1);
+			__assign_bit(J720_GPIO_3V, values, 1);
+			break;
+		}
+		break;
+
+	default:
+		return -1;
+	}
+
+	if (state->Vpp != state->Vcc && state->Vpp != 0) {
+		printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
+			__func__, state->Vpp);
+		return -EPERM;
+	}
+
+	ret = sa1111_pcmcia_configure_socket(skt, state);
+	if (ret == 0)
+		ret = gpiod_set_array_value_cansleep(J720_GPIO_MAX, j->gpio,
+						     NULL, values);
+
+	return ret;
+}
+
+static struct pcmcia_low_level jornada720_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+	.hw_init		= jornada720_pcmcia_hw_init,
+	.configure_socket	= jornada720_pcmcia_configure_socket,
+	.first			= 0,
+	.nr			= 2,
+};
+
+int pcmcia_jornada720_init(struct sa1111_dev *sadev)
+{
+	/* Fixme: why messing around with SA11x0's GPIO1? */
+	GRER |= 0x00000002;
+
+	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
+	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
+				 sa11xx_drv_pcmcia_add_one);
+}