From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/pcmcia/sa1100_simpad.c | 115 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 drivers/pcmcia/sa1100_simpad.c

(limited to 'drivers/pcmcia/sa1100_simpad.c')

diff --git a/drivers/pcmcia/sa1100_simpad.c b/drivers/pcmcia/sa1100_simpad.c
new file mode 100644
index 000000000..784ada5b8
--- /dev/null
+++ b/drivers/pcmcia/sa1100_simpad.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * drivers/pcmcia/sa1100_simpad.c
+ *
+ * PCMCIA implementation routines for simpad
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/init.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <mach/simpad.h>
+#include "sa1100_generic.h"
+
+static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+
+	simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
+
+	skt->stat[SOC_STAT_CD].name = "cf-detect";
+	skt->stat[SOC_STAT_RDY].name = "cf-ready";
+
+	return soc_pcmcia_request_gpiods(skt);
+}
+
+static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+	/* Disable CF bus: */
+	/*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/
+	simpad_clear_cs3_bit(PCMCIA_RESET);
+}
+
+static void
+simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+			   struct pcmcia_state *state)
+{
+	long cs3reg = simpad_get_cs3_ro();
+
+	/* bvd1 might be cs3reg & PCMCIA_BVD1 */
+	/* bvd2 might be cs3reg & PCMCIA_BVD2 */
+
+	if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) ==
+			(PCMCIA_VS1|PCMCIA_VS2)) {
+		state->vs_3v=0;
+		state->vs_Xv=0;
+	} else {
+		state->vs_3v=1;
+		state->vs_Xv=0;
+	}
+}
+
+static int
+simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+			       const socket_state_t *state)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/* Murphy: see table of MIC2562a-1 */
+	switch (state->Vcc) {
+	case 0:
+		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
+		break;
+
+	case 33:
+		simpad_clear_cs3_bit(VCC_3V_EN|EN1);
+		simpad_set_cs3_bit(VCC_5V_EN|EN0);
+		break;
+
+	case 50:
+		simpad_clear_cs3_bit(VCC_5V_EN|EN1);
+		simpad_set_cs3_bit(VCC_3V_EN|EN0);
+		break;
+
+	default:
+		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
+			__func__, state->Vcc);
+		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
+		local_irq_restore(flags);
+		return -1;
+	}
+
+
+	local_irq_restore(flags);
+
+	return 0;
+}
+
+static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+	simpad_set_cs3_bit(PCMCIA_RESET);
+}
+
+static struct pcmcia_low_level simpad_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+	.hw_init		= simpad_pcmcia_hw_init,
+	.hw_shutdown		= simpad_pcmcia_hw_shutdown,
+	.socket_state		= simpad_pcmcia_socket_state,
+	.configure_socket	= simpad_pcmcia_configure_socket,
+	.socket_suspend		= simpad_pcmcia_socket_suspend,
+};
+
+int pcmcia_simpad_init(struct device *dev)
+{
+	int ret = -ENODEV;
+
+	if (machine_is_simpad())
+		ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
+
+	return ret;
+}
-- 
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