Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 279 insertions, 0 deletions

diff --git a/drivers/pcmcia/sa1111_generic.c b/drivers/pcmcia/sa1111_generic.c
new file mode 100644
index 000000000..bce664bbd
--- /dev/null
+++ b/drivers/pcmcia/sa1111_generic.c
@@ -0,0 +1,279 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/drivers/pcmcia/sa1111_generic.c
+ *
+ * We implement the generic parts of a SA1111 PCMCIA driver.  This
+ * basically means we handle everything except controlling the
+ * power.  Power is machine specific...
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include <pcmcia/ss.h>
+
+#include <asm/hardware/sa1111.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+
+#include "sa1111_generic.h"
+
+/*
+ * These are offsets from the above base.
+ */
+#define PCCR	0x0000
+#define PCSSR	0x0004
+#define PCSR	0x0008
+
+#define PCSR_S0_READY	(1<<0)
+#define PCSR_S1_READY	(1<<1)
+#define PCSR_S0_DETECT	(1<<2)
+#define PCSR_S1_DETECT	(1<<3)
+#define PCSR_S0_VS1	(1<<4)
+#define PCSR_S0_VS2	(1<<5)
+#define PCSR_S1_VS1	(1<<6)
+#define PCSR_S1_VS2	(1<<7)
+#define PCSR_S0_WP	(1<<8)
+#define PCSR_S1_WP	(1<<9)
+#define PCSR_S0_BVD1	(1<<10)
+#define PCSR_S0_BVD2	(1<<11)
+#define PCSR_S1_BVD1	(1<<12)
+#define PCSR_S1_BVD2	(1<<13)
+
+#define PCCR_S0_RST	(1<<0)
+#define PCCR_S1_RST	(1<<1)
+#define PCCR_S0_FLT	(1<<2)
+#define PCCR_S1_FLT	(1<<3)
+#define PCCR_S0_PWAITEN	(1<<4)
+#define PCCR_S1_PWAITEN	(1<<5)
+#define PCCR_S0_PSE	(1<<6)
+#define PCCR_S1_PSE	(1<<7)
+
+#define PCSSR_S0_SLEEP	(1<<0)
+#define PCSSR_S1_SLEEP	(1<<1)
+
+#define IDX_IRQ_S0_READY_NINT	(0)
+#define IDX_IRQ_S0_CD_VALID	(1)
+#define IDX_IRQ_S0_BVD1_STSCHG	(2)
+#define IDX_IRQ_S1_READY_NINT	(3)
+#define IDX_IRQ_S1_CD_VALID	(4)
+#define IDX_IRQ_S1_BVD1_STSCHG	(5)
+#define NUM_IRQS		(6)
+
+void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+	struct sa1111_pcmcia_socket *s = to_skt(skt);
+	u32 status = readl_relaxed(s->dev->mapbase + PCSR);
+
+	switch (skt->nr) {
+	case 0:
+		state->detect = status & PCSR_S0_DETECT ? 0 : 1;
+		state->ready  = status & PCSR_S0_READY  ? 1 : 0;
+		state->bvd1   = status & PCSR_S0_BVD1   ? 1 : 0;
+		state->bvd2   = status & PCSR_S0_BVD2   ? 1 : 0;
+		state->wrprot = status & PCSR_S0_WP     ? 1 : 0;
+		state->vs_3v  = status & PCSR_S0_VS1    ? 0 : 1;
+		state->vs_Xv  = status & PCSR_S0_VS2    ? 0 : 1;
+		break;
+
+	case 1:
+		state->detect = status & PCSR_S1_DETECT ? 0 : 1;
+		state->ready  = status & PCSR_S1_READY  ? 1 : 0;
+		state->bvd1   = status & PCSR_S1_BVD1   ? 1 : 0;
+		state->bvd2   = status & PCSR_S1_BVD2   ? 1 : 0;
+		state->wrprot = status & PCSR_S1_WP     ? 1 : 0;
+		state->vs_3v  = status & PCSR_S1_VS1    ? 0 : 1;
+		state->vs_Xv  = status & PCSR_S1_VS2    ? 0 : 1;
+		break;
+	}
+}
+
+int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
+{
+	struct sa1111_pcmcia_socket *s = to_skt(skt);
+	u32 pccr_skt_mask, pccr_set_mask, val;
+	unsigned long flags;
+
+	switch (skt->nr) {
+	case 0:
+		pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
+		break;
+
+	case 1:
+		pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
+		break;
+
+	default:
+		return -1;
+	}
+
+	pccr_set_mask = 0;
+
+	if (state->Vcc != 0)
+		pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
+	if (state->Vcc == 50)
+		pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
+	if (state->flags & SS_RESET)
+		pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
+	if (state->flags & SS_OUTPUT_ENA)
+		pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
+
+	local_irq_save(flags);
+	val = readl_relaxed(s->dev->mapbase + PCCR);
+	val &= ~pccr_skt_mask;
+	val |= pccr_set_mask & pccr_skt_mask;
+	writel_relaxed(val, s->dev->mapbase + PCCR);
+	local_irq_restore(flags);
+
+	return 0;
+}
+
+int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
+	int (*add)(struct soc_pcmcia_socket *))
+{
+	struct sa1111_pcmcia_socket *s;
+	struct clk *clk;
+	int i, ret = 0, irqs[NUM_IRQS];
+
+	clk = devm_clk_get(&dev->dev, NULL);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	for (i = 0; i < NUM_IRQS; i++) {
+		irqs[i] = sa1111_get_irq(dev, i);
+		if (irqs[i] <= 0)
+			return irqs[i] ? : -ENXIO;
+	}
+
+	ops->socket_state = sa1111_pcmcia_socket_state;
+
+	for (i = 0; i < ops->nr; i++) {
+		s = kzalloc(sizeof(*s), GFP_KERNEL);
+		if (!s)
+			return -ENOMEM;
+
+		s->soc.nr = ops->first + i;
+		s->soc.clk = clk;
+
+		soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
+		s->dev = dev;
+		if (s->soc.nr) {
+			s->soc.socket.pci_irq = irqs[IDX_IRQ_S1_READY_NINT];
+			s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S1_CD_VALID];
+			s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
+			s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S1_BVD1_STSCHG];
+			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
+		} else {
+			s->soc.socket.pci_irq = irqs[IDX_IRQ_S0_READY_NINT];
+			s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S0_CD_VALID];
+			s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
+			s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S0_BVD1_STSCHG];
+			s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
+		}
+
+		ret = add(&s->soc);
+		if (ret == 0) {
+			s->next = dev_get_drvdata(&dev->dev);
+			dev_set_drvdata(&dev->dev, s);
+		} else
+			kfree(s);
+	}
+
+	return ret;
+}
+
+static int pcmcia_probe(struct sa1111_dev *dev)
+{
+	void __iomem *base;
+	int ret;
+
+	ret = sa1111_enable_device(dev);
+	if (ret)
+		return ret;
+
+	dev_set_drvdata(&dev->dev, NULL);
+
+	if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) {
+		sa1111_disable_device(dev);
+		return -EBUSY;
+	}
+
+	base = dev->mapbase;
+
+	/*
+	 * Initialise the suspend state.
+	 */
+	writel_relaxed(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
+	writel_relaxed(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
+
+	ret = -ENODEV;
+#ifdef CONFIG_SA1100_BADGE4
+	if (machine_is_badge4())
+		ret = pcmcia_badge4_init(dev);
+#endif
+#ifdef CONFIG_SA1100_JORNADA720
+	if (machine_is_jornada720())
+		ret = pcmcia_jornada720_init(dev);
+#endif
+#ifdef CONFIG_ARCH_LUBBOCK
+	if (machine_is_lubbock())
+		ret = pcmcia_lubbock_init(dev);
+#endif
+#ifdef CONFIG_ASSABET_NEPONSET
+	if (machine_is_assabet())
+		ret = pcmcia_neponset_init(dev);
+#endif
+
+	if (ret) {
+		release_mem_region(dev->res.start, 512);
+		sa1111_disable_device(dev);
+	}
+
+	return ret;
+}
+
+static void pcmcia_remove(struct sa1111_dev *dev)
+{
+	struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev);
+
+	dev_set_drvdata(&dev->dev, NULL);
+
+	for (; s; s = next) {
+		next = s->next;
+		soc_pcmcia_remove_one(&s->soc);
+		kfree(s);
+	}
+
+	release_mem_region(dev->res.start, 512);
+	sa1111_disable_device(dev);
+}
+
+static struct sa1111_driver pcmcia_driver = {
+	.drv = {
+		.name	= "sa1111-pcmcia",
+	},
+	.devid		= SA1111_DEVID_PCMCIA,
+	.probe		= pcmcia_probe,
+	.remove		= pcmcia_remove,
+};
+
+static int __init sa1111_drv_pcmcia_init(void)
+{
+	return sa1111_driver_register(&pcmcia_driver);
+}
+
+static void __exit sa1111_drv_pcmcia_exit(void)
+{
+	sa1111_driver_unregister(&pcmcia_driver);
+}
+
+fs_initcall(sa1111_drv_pcmcia_init);
+module_exit(sa1111_drv_pcmcia_exit);
+
+MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
+MODULE_LICENSE("GPL");