--- /dev/null
+/*
+ * 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 <mach/hardware.h>
+#include <asm/hardware/sa1111.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)
+
+void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+ struct sa1111_pcmcia_socket *s = to_skt(skt);
+ unsigned long status = sa1111_readl(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);
+ unsigned int 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 = sa1111_readl(s->dev->mapbase + PCCR);
+ val &= ~pccr_skt_mask;
+ val |= pccr_set_mask & pccr_skt_mask;
+ sa1111_writel(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;
+ int i, ret = 0;
+
+ 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_get(&dev->dev, NULL);
+ if (IS_ERR(s->soc.clk)) {
+ ret = PTR_ERR(s->soc.clk);
+ kfree(s);
+ return ret;
+ }
+ soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
+ s->dev = dev;
+ if (s->soc.nr) {
+ s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
+ s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
+ s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
+ s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
+ s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
+ } else {
+ s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
+ s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
+ s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
+ s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[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.
+ */
+ sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
+ sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
+
+#ifdef CONFIG_SA1100_BADGE4
+ pcmcia_badge4_init(dev);
+#endif
+#ifdef CONFIG_SA1100_JORNADA720
+ pcmcia_jornada720_init(dev);
+#endif
+#ifdef CONFIG_ARCH_LUBBOCK
+ pcmcia_lubbock_init(dev);
+#endif
+#ifdef CONFIG_ASSABET_NEPONSET
+ pcmcia_neponset_init(dev);
+#endif
+ return 0;
+}
+
+static int 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);
+ clk_put(s->soc.clk);
+ kfree(s);
+ }
+
+ release_mem_region(dev->res.start, 512);
+ sa1111_disable_device(dev);
+ return 0;
+}
+
+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");
Code Review / kvmfornfv.git / blobdiff