Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/pcmcia/sa1100_h3600.c b/drivers/pcmcia/sa1100_h3600.c
new file mode 100644
index 000000000..a91222bc3
--- /dev/null
+++ b/drivers/pcmcia/sa1100_h3600.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * drivers/pcmcia/sa1100_h3600.c
+ *
+ * PCMCIA implementation routines for H3600
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <mach/h3xxx.h>
+
+#include "sa1100_generic.h"
+
+static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	int err;
+
+	skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect";
+	skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready";
+
+	err = soc_pcmcia_request_gpiods(skt);
+	if (err)
+		return err;
+
+	switch (skt->nr) {
+	case 0:
+		err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
+		if (err)
+			goto err01;
+		err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
+		if (err)
+			goto err03;
+		err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
+		if (err)
+			goto err03;
+		err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
+		if (err)
+			goto err04;
+		err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
+		if (err)
+			goto err04;
+		err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
+		if (err)
+			goto err05;
+		err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
+		if (err)
+			goto err05;
+		err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
+		if (err)
+			goto err06;
+		break;
+	case 1:
+		break;
+	}
+	return 0;
+
+err06:	gpio_free(H3XXX_EGPIO_CARD_RESET);
+err05:	gpio_free(H3XXX_EGPIO_OPT_RESET);
+err04:	gpio_free(H3XXX_EGPIO_OPT_ON);
+err03:	gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
+err01:	gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
+	return err;
+}
+
+static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+	switch (skt->nr) {
+	case 0:
+		/* Disable CF bus: */
+		gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
+		gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
+		gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
+
+		gpio_free(H3XXX_EGPIO_CARD_RESET);
+		gpio_free(H3XXX_EGPIO_OPT_RESET);
+		gpio_free(H3XXX_EGPIO_OPT_ON);
+		gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
+		break;
+	case 1:
+		break;
+	}
+}
+
+static void
+h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+	state->bvd1 = 0;
+	state->bvd2 = 0;
+	state->vs_3v = 0;
+	state->vs_Xv = 0;
+}
+
+static int
+h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
+		printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
+		       state->Vcc / 10, state->Vcc % 10);
+		return -1;
+	}
+
+	gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
+
+	/* Silently ignore Vpp, output enable, speaker enable. */
+
+	return 0;
+}
+
+static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+	/* Enable CF bus: */
+	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
+	gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
+	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);
+
+	msleep(10);
+}
+
+static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+	/*
+	 * FIXME:  This doesn't fit well.  We don't have the mechanism in
+	 * the generic PCMCIA layer to deal with the idea of two sockets
+	 * on one bus.  We rely on the cs.c behaviour shutting down
+	 * socket 0 then socket 1.
+	 */
+	if (skt->nr == 1) {
+		gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
+		gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
+		/* hmm, does this suck power? */
+		gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
+	}
+}
+
+struct pcmcia_low_level h3600_pcmcia_ops = { 
+	.owner			= THIS_MODULE,
+	.hw_init		= h3600_pcmcia_hw_init,
+	.hw_shutdown		= h3600_pcmcia_hw_shutdown,
+	.socket_state		= h3600_pcmcia_socket_state,
+	.configure_socket	= h3600_pcmcia_configure_socket,
+
+	.socket_init		= h3600_pcmcia_socket_init,
+	.socket_suspend		= h3600_pcmcia_socket_suspend,
+};
+
+int pcmcia_h3600_init(struct device *dev)
+{
+	int ret = -ENODEV;
+
+	if (machine_is_h3600() || machine_is_h3100())
+		ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
+
+	return ret;
+}