1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1111_neponset.c b/drivers/pcmcia/sa1111_neponset.c
new file mode 100644
index 000000000..de0ce1335
--- /dev/null
+++ b/drivers/pcmcia/sa1111_neponset.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/drivers/pcmcia/sa1100_neponset.c
+ *
+ * Neponset PCMCIA specific routines
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+
+#include <asm/mach-types.h>
+
+#include "sa1111_generic.h"
+#include "max1600.h"
+
+/*
+ * Neponset uses the Maxim MAX1600, with the following connections:
+ *
+ *   MAX1600      Neponset
+ *
+ *    A0VCC        SA-1111 GPIO A<1>
+ *    A1VCC        SA-1111 GPIO A<0>
+ *    A0VPP        CPLD NCR A0VPP
+ *    A1VPP        CPLD NCR A1VPP
+ *    B0VCC        SA-1111 GPIO A<2>
+ *    B1VCC        SA-1111 GPIO A<3>
+ *    B0VPP        ground (slot B is CF)
+ *    B1VPP        ground (slot B is CF)
+ *
+ *     VX          VCC (5V)
+ *     VY          VCC3_3 (3.3V)
+ *     12INA       12V
+ *     12INB       ground (slot B is CF)
+ *
+ * The MAX1600 CODE pin is tied to ground, placing the device in 
+ * "Standard Intel code" mode. Refer to the Maxim data sheet for
+ * the corresponding truth table.
+ */
+static int neponset_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	struct max1600 *m;
+	int ret;
+
+	ret = max1600_init(skt->socket.dev.parent, &m,
+			   skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
+			   MAX1600_CODE_LOW);
+	if (ret == 0)
+		skt->driver_data = m;
+
+	return ret;
+}
+
+static int
+neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+	struct max1600 *m = skt->driver_data;
+	int ret;
+
+	ret = sa1111_pcmcia_configure_socket(skt, state);
+	if (ret == 0)
+		ret = max1600_configure(m, state->Vcc, state->Vpp);
+
+	return ret;
+}
+
+static struct pcmcia_low_level neponset_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+	.hw_init		= neponset_pcmcia_hw_init,
+	.configure_socket	= neponset_pcmcia_configure_socket,
+	.first			= 0,
+	.nr			= 2,
+};
+
+int pcmcia_neponset_init(struct sa1111_dev *sadev)
+{
+	sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops);
+	return sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops,
+				 sa11xx_drv_pcmcia_add_one);
+}