Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 213 insertions, 0 deletions

diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c
new file mode 100644
index 0000000000..89d4ba58c8
--- /dev/null
+++ b/drivers/pcmcia/sa1100_generic.c
@@ -0,0 +1,213 @@
+/*======================================================================
+
+    Device driver for the PCMCIA control functionality of StrongARM
+    SA-1100 microprocessors.
+
+    The contents of this file are subject to the Mozilla Public
+    License Version 1.1 (the "License"); you may not use this file
+    except in compliance with the License. You may obtain a copy of
+    the License at http://www.mozilla.org/MPL/
+
+    Software distributed under the License is distributed on an "AS
+    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+    implied. See the License for the specific language governing
+    rights and limitations under the License.
+
+    The initial developer of the original code is John G. Dorsey
+    <john+@cs.cmu.edu>.  Portions created by John G. Dorsey are
+    Copyright (C) 1999 John G. Dorsey.  All Rights Reserved.
+
+    Alternatively, the contents of this file may be used under the
+    terms of the GNU Public License version 2 (the "GPL"), in which
+    case the provisions of the GPL are applicable instead of the
+    above.  If you wish to allow the use of your version of this file
+    only under the terms of the GPL and not to allow others to use
+    your version of this file under the MPL, indicate your decision
+    by deleting the provisions above and replace them with the notice
+    and other provisions required by the GPL.  If you do not delete
+    the provisions above, a recipient may use your version of this
+    file under either the MPL or the GPL.
+    
+======================================================================*/
+
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+#include <linux/init.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+#include <pcmcia/ss.h>
+
+#include <asm/hardware/scoop.h>
+
+#include "sa1100_generic.h"
+
+static const char *sa11x0_cf_gpio_names[] = {
+	[SOC_STAT_CD] = "detect",
+	[SOC_STAT_BVD1] = "bvd1",
+	[SOC_STAT_BVD2] = "bvd2",
+	[SOC_STAT_RDY] = "ready",
+};
+
+static int sa11x0_cf_hw_init(struct soc_pcmcia_socket *skt)
+{
+	struct device *dev = skt->socket.dev.parent;
+	int i;
+
+	skt->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(skt->gpio_reset))
+		return PTR_ERR(skt->gpio_reset);
+
+	skt->gpio_bus_enable = devm_gpiod_get_optional(dev, "bus-enable",
+						       GPIOD_OUT_HIGH);
+	if (IS_ERR(skt->gpio_bus_enable))
+		return PTR_ERR(skt->gpio_bus_enable);
+
+	skt->vcc.reg = devm_regulator_get_optional(dev, "vcc");
+	if (IS_ERR(skt->vcc.reg))
+		return PTR_ERR(skt->vcc.reg);
+
+	if (!skt->vcc.reg)
+		dev_warn(dev,
+			 "no Vcc regulator provided, ignoring Vcc controls\n");
+
+	for (i = 0; i < ARRAY_SIZE(sa11x0_cf_gpio_names); i++) {
+		skt->stat[i].name = sa11x0_cf_gpio_names[i];
+		skt->stat[i].desc = devm_gpiod_get_optional(dev,
+					sa11x0_cf_gpio_names[i], GPIOD_IN);
+		if (IS_ERR(skt->stat[i].desc))
+			return PTR_ERR(skt->stat[i].desc);
+	}
+	return 0;
+}
+
+static int sa11x0_cf_configure_socket(struct soc_pcmcia_socket *skt,
+	const socket_state_t *state)
+{
+	return soc_pcmcia_regulator_set(skt, &skt->vcc, state->Vcc);
+}
+
+static struct pcmcia_low_level sa11x0_cf_ops = {
+	.owner = THIS_MODULE,
+	.hw_init = sa11x0_cf_hw_init,
+	.socket_state = soc_common_cf_socket_state,
+	.configure_socket = sa11x0_cf_configure_socket,
+};
+
+int __init pcmcia_collie_init(struct device *dev);
+
+static int (*sa11x0_pcmcia_legacy_hw_init[])(struct device *dev) = {
+#ifdef CONFIG_SA1100_H3600
+	pcmcia_h3600_init,
+#endif
+#ifdef CONFIG_SA1100_COLLIE
+       pcmcia_collie_init,
+#endif
+};
+
+static int sa11x0_drv_pcmcia_legacy_probe(struct platform_device *dev)
+{
+	int i, ret = -ENODEV;
+
+	/*
+	 * Initialise any "on-board" PCMCIA sockets.
+	 */
+	for (i = 0; i < ARRAY_SIZE(sa11x0_pcmcia_legacy_hw_init); i++) {
+		ret = sa11x0_pcmcia_legacy_hw_init[i](&dev->dev);
+		if (ret == 0)
+			break;
+	}
+
+	return ret;
+}
+
+static void sa11x0_drv_pcmcia_legacy_remove(struct platform_device *dev)
+{
+	struct skt_dev_info *sinfo = platform_get_drvdata(dev);
+	int i;
+
+	platform_set_drvdata(dev, NULL);
+
+	for (i = 0; i < sinfo->nskt; i++)
+		soc_pcmcia_remove_one(&sinfo->skt[i]);
+}
+
+static int sa11x0_drv_pcmcia_probe(struct platform_device *pdev)
+{
+	struct soc_pcmcia_socket *skt;
+	struct device *dev = &pdev->dev;
+
+	if (pdev->id == -1)
+		return sa11x0_drv_pcmcia_legacy_probe(pdev);
+
+	skt = devm_kzalloc(dev, sizeof(*skt), GFP_KERNEL);
+	if (!skt)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, skt);
+
+	skt->nr = pdev->id;
+	skt->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(skt->clk))
+		return PTR_ERR(skt->clk);
+
+	sa11xx_drv_pcmcia_ops(&sa11x0_cf_ops);
+	soc_pcmcia_init_one(skt, &sa11x0_cf_ops, dev);
+
+	return sa11xx_drv_pcmcia_add_one(skt);
+}
+
+static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
+{
+	struct soc_pcmcia_socket *skt;
+
+	if (dev->id == -1) {
+		sa11x0_drv_pcmcia_legacy_remove(dev);
+		return 0;
+	}
+
+	skt = platform_get_drvdata(dev);
+
+	soc_pcmcia_remove_one(skt);
+
+	return 0;
+}
+
+static struct platform_driver sa11x0_pcmcia_driver = {
+	.driver = {
+		.name		= "sa11x0-pcmcia",
+	},
+	.probe		= sa11x0_drv_pcmcia_probe,
+	.remove		= sa11x0_drv_pcmcia_remove,
+};
+
+/* sa11x0_pcmcia_init()
+ * ^^^^^^^^^^^^^^^^^^^^
+ *
+ * This routine performs low-level PCMCIA initialization and then
+ * registers this socket driver with Card Services.
+ *
+ * Returns: 0 on success, -ve error code on failure
+ */
+static int __init sa11x0_pcmcia_init(void)
+{
+	return platform_driver_register(&sa11x0_pcmcia_driver);
+}
+
+/* sa11x0_pcmcia_exit()
+ * ^^^^^^^^^^^^^^^^^^^^
+ * Invokes the low-level kernel service to free IRQs associated with this
+ * socket controller and reset GPIO edge detection.
+ */
+static void __exit sa11x0_pcmcia_exit(void)
+{
+	platform_driver_unregister(&sa11x0_pcmcia_driver);
+}
+
+MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
+MODULE_DESCRIPTION("Linux PCMCIA Card Services: SA-11x0 Socket Controller");
+MODULE_LICENSE("Dual MPL/GPL");
+
+fs_initcall(sa11x0_pcmcia_init);
+module_exit(sa11x0_pcmcia_exit);