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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-pxa/colibri-pcmcia.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-pxa/colibri-pcmcia.c')
-rw-r--r--arch/arm/mach-pxa/colibri-pcmcia.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/colibri-pcmcia.c b/arch/arm/mach-pxa/colibri-pcmcia.c
new file mode 100644
index 000000000..9da7b478e
--- /dev/null
+++ b/arch/arm/mach-pxa/colibri-pcmcia.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/drivers/pcmcia/pxa2xx_colibri.c
+ *
+ * Driver for Toradex Colibri PXA270 CF socket
+ *
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <asm/mach-types.h>
+
+#include <pcmcia/soc_common.h>
+
+#define COLIBRI270_RESET_GPIO 53
+#define COLIBRI270_PPEN_GPIO 107
+#define COLIBRI270_BVD1_GPIO 83
+#define COLIBRI270_BVD2_GPIO 82
+#define COLIBRI270_DETECT_GPIO 84
+#define COLIBRI270_READY_GPIO 1
+
+#define COLIBRI320_RESET_GPIO 77
+#define COLIBRI320_PPEN_GPIO 57
+#define COLIBRI320_BVD1_GPIO 53
+#define COLIBRI320_BVD2_GPIO 79
+#define COLIBRI320_DETECT_GPIO 81
+#define COLIBRI320_READY_GPIO 29
+
+enum {
+ DETECT = 0,
+ READY = 1,
+ BVD1 = 2,
+ BVD2 = 3,
+ PPEN = 4,
+ RESET = 5,
+};
+
+/* Contents of this array are configured on-the-fly in init function */
+static struct gpio colibri_pcmcia_gpios[] = {
+ { 0, GPIOF_IN, "PCMCIA Detect" },
+ { 0, GPIOF_IN, "PCMCIA Ready" },
+ { 0, GPIOF_IN, "PCMCIA BVD1" },
+ { 0, GPIOF_IN, "PCMCIA BVD2" },
+ { 0, GPIOF_INIT_LOW, "PCMCIA PPEN" },
+ { 0, GPIOF_INIT_HIGH,"PCMCIA Reset" },
+};
+
+static int colibri_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+ int ret;
+
+ ret = gpio_request_array(colibri_pcmcia_gpios,
+ ARRAY_SIZE(colibri_pcmcia_gpios));
+ if (ret)
+ goto err1;
+
+ skt->socket.pci_irq = gpio_to_irq(colibri_pcmcia_gpios[READY].gpio);
+ skt->stat[SOC_STAT_CD].irq = gpio_to_irq(colibri_pcmcia_gpios[DETECT].gpio);
+ skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
+
+err1:
+ return ret;
+}
+
+static void colibri_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+ gpio_free_array(colibri_pcmcia_gpios,
+ ARRAY_SIZE(colibri_pcmcia_gpios));
+}
+
+static void colibri_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+ struct pcmcia_state *state)
+{
+
+ state->detect = !!gpio_get_value(colibri_pcmcia_gpios[DETECT].gpio);
+ state->ready = !!gpio_get_value(colibri_pcmcia_gpios[READY].gpio);
+ state->bvd1 = !!gpio_get_value(colibri_pcmcia_gpios[BVD1].gpio);
+ state->bvd2 = !!gpio_get_value(colibri_pcmcia_gpios[BVD2].gpio);
+ state->vs_3v = 1;
+ state->vs_Xv = 0;
+}
+
+static int
+colibri_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+ const socket_state_t *state)
+{
+ gpio_set_value(colibri_pcmcia_gpios[PPEN].gpio,
+ !(state->Vcc == 33 && state->Vpp < 50));
+ gpio_set_value(colibri_pcmcia_gpios[RESET].gpio,
+ state->flags & SS_RESET);
+ return 0;
+}
+
+static struct pcmcia_low_level colibri_pcmcia_ops = {
+ .owner = THIS_MODULE,
+
+ .first = 0,
+ .nr = 1,
+
+ .hw_init = colibri_pcmcia_hw_init,
+ .hw_shutdown = colibri_pcmcia_hw_shutdown,
+
+ .socket_state = colibri_pcmcia_socket_state,
+ .configure_socket = colibri_pcmcia_configure_socket,
+};
+
+static struct platform_device *colibri_pcmcia_device;
+
+static int __init colibri_pcmcia_init(void)
+{
+ int ret;
+
+ if (!machine_is_colibri() && !machine_is_colibri320())
+ return -ENODEV;
+
+ colibri_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+ if (!colibri_pcmcia_device)
+ return -ENOMEM;
+
+ /* Colibri PXA270 */
+ if (machine_is_colibri()) {
+ colibri_pcmcia_gpios[RESET].gpio = COLIBRI270_RESET_GPIO;
+ colibri_pcmcia_gpios[PPEN].gpio = COLIBRI270_PPEN_GPIO;
+ colibri_pcmcia_gpios[BVD1].gpio = COLIBRI270_BVD1_GPIO;
+ colibri_pcmcia_gpios[BVD2].gpio = COLIBRI270_BVD2_GPIO;
+ colibri_pcmcia_gpios[DETECT].gpio = COLIBRI270_DETECT_GPIO;
+ colibri_pcmcia_gpios[READY].gpio = COLIBRI270_READY_GPIO;
+ /* Colibri PXA320 */
+ } else if (machine_is_colibri320()) {
+ colibri_pcmcia_gpios[RESET].gpio = COLIBRI320_RESET_GPIO;
+ colibri_pcmcia_gpios[PPEN].gpio = COLIBRI320_PPEN_GPIO;
+ colibri_pcmcia_gpios[BVD1].gpio = COLIBRI320_BVD1_GPIO;
+ colibri_pcmcia_gpios[BVD2].gpio = COLIBRI320_BVD2_GPIO;
+ colibri_pcmcia_gpios[DETECT].gpio = COLIBRI320_DETECT_GPIO;
+ colibri_pcmcia_gpios[READY].gpio = COLIBRI320_READY_GPIO;
+ }
+
+ ret = platform_device_add_data(colibri_pcmcia_device,
+ &colibri_pcmcia_ops, sizeof(colibri_pcmcia_ops));
+
+ if (!ret)
+ ret = platform_device_add(colibri_pcmcia_device);
+
+ if (ret)
+ platform_device_put(colibri_pcmcia_device);
+
+ return ret;
+}
+
+static void __exit colibri_pcmcia_exit(void)
+{
+ platform_device_unregister(colibri_pcmcia_device);
+}
+
+module_init(colibri_pcmcia_init);
+module_exit(colibri_pcmcia_exit);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Toradex Colibri PXA270/PXA320");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");