---- /dev/null
-+++ b/drivers/pcmcia/bcm63xx_pcmcia.c
-@@ -0,0 +1,521 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/ioport.h>
-+#include <linux/timer.h>
-+#include <linux/platform_device.h>
-+#include <linux/delay.h>
-+#include <linux/pci.h>
-+#include <linux/gpio.h>
-+
-+#include <bcm63xx_regs.h>
-+#include <bcm63xx_io.h>
-+#include "bcm63xx_pcmcia.h"
-+
-+#define PFX "bcm63xx_pcmcia: "
-+
-+#ifdef CONFIG_CARDBUS
-+/* if cardbus is used, platform device needs reference to actual pci
-+ * device */
-+static struct pci_dev *bcm63xx_cb_dev;
-+#endif
-+
-+/*
-+ * read/write helper for pcmcia regs
-+ */
-+static inline u32 pcmcia_readl(struct bcm63xx_pcmcia_socket *skt, u32 off)
-+{
-+ return bcm_readl(skt->base + off);
-+}
-+
-+static inline void pcmcia_writel(struct bcm63xx_pcmcia_socket *skt,
-+ u32 val, u32 off)
-+{
-+ bcm_writel(val, skt->base + off);
-+}
-+
-+/*
-+ * (Re-)Initialise the socket, turning on status interrupts and PCMCIA
-+ * bus. This must wait for power to stabilise so that the card status
-+ * signals report correctly.
-+ */
-+static int bcm63xx_pcmcia_sock_init(struct pcmcia_socket *sock)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ skt = sock->driver_data;
-+ return 0;
-+}
-+
-+/*
-+ * Remove power on the socket, disable IRQs from the card.
-+ * Turn off status interrupts, and disable the PCMCIA bus.
-+ */
-+static int bcm63xx_pcmcia_suspend(struct pcmcia_socket *sock)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ skt = sock->driver_data;
-+ return 0;
-+}
-+
-+/*
-+ * Implements the set_socket() operation for the in-kernel PCMCIA
-+ * service (formerly SS_SetSocket in Card Services). We more or
-+ * less punt all of this work and let the kernel handle the details
-+ * of power configuration, reset, &c. We also record the value of
-+ * `state' in order to regurgitate it to the PCMCIA core later.
-+ */
-+static int bcm63xx_pcmcia_set_socket(struct pcmcia_socket *sock,
-+ socket_state_t *state)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ unsigned long flags;
-+ u32 val;
-+
-+ skt = sock->driver_data;
-+
-+ spin_lock_irqsave(&skt->lock, flags);
-+
-+ /* apply requested socket power */
-+ /* FIXME: hardware can't do this */
-+
-+ /* apply socket reset */
-+ val = pcmcia_readl(skt, PCMCIA_C1_REG);
-+ if (state->flags & SS_RESET)
-+ val |= PCMCIA_C1_RESET_MASK;
-+ else
-+ val &= ~PCMCIA_C1_RESET_MASK;
-+
-+ /* reverse reset logic for cardbus card */
-+ if (skt->card_detected && (skt->card_type & CARD_CARDBUS))
-+ val ^= PCMCIA_C1_RESET_MASK;
-+
-+ pcmcia_writel(skt, val, PCMCIA_C1_REG);
-+
-+ /* keep requested state for event reporting */
-+ skt->requested_state = *state;
-+
-+ spin_unlock_irqrestore(&skt->lock, flags);
-+
-+ return 0;
-+}
-+
-+/*
-+ * identity cardtype from VS[12] input, CD[12] input while only VS2 is
-+ * floating, and CD[12] input while only VS1 is floating
-+ */
-+enum {
-+ IN_VS1 = (1 << 0),
-+ IN_VS2 = (1 << 1),
-+ IN_CD1_VS2H = (1 << 2),
-+ IN_CD2_VS2H = (1 << 3),
-+ IN_CD1_VS1H = (1 << 4),
-+ IN_CD2_VS1H = (1 << 5),
-+};
-+
-+static const u8 vscd_to_cardtype[] = {
-+
-+ /* VS1 float, VS2 float */
-+ [IN_VS1 | IN_VS2] = (CARD_PCCARD | CARD_5V),
-+
-+ /* VS1 grounded, VS2 float */
-+ [IN_VS2] = (CARD_PCCARD | CARD_5V | CARD_3V),
-+
-+ /* VS1 grounded, VS2 grounded */
-+ [0] = (CARD_PCCARD | CARD_5V | CARD_3V | CARD_XV),
-+
-+ /* VS1 tied to CD1, VS2 float */
-+ [IN_VS1 | IN_VS2 | IN_CD1_VS1H] = (CARD_CARDBUS | CARD_3V),
-+
-+ /* VS1 grounded, VS2 tied to CD2 */
-+ [IN_VS2 | IN_CD2_VS2H] = (CARD_CARDBUS | CARD_3V | CARD_XV),
-+
-+ /* VS1 tied to CD2, VS2 grounded */
-+ [IN_VS1 | IN_CD2_VS1H] = (CARD_CARDBUS | CARD_3V | CARD_XV | CARD_YV),
-+
-+ /* VS1 float, VS2 grounded */
-+ [IN_VS1] = (CARD_PCCARD | CARD_XV),
-+
-+ /* VS1 float, VS2 tied to CD2 */
-+ [IN_VS1 | IN_VS2 | IN_CD2_VS2H] = (CARD_CARDBUS | CARD_3V),
-+
-+ /* VS1 float, VS2 tied to CD1 */
-+ [IN_VS1 | IN_VS2 | IN_CD1_VS2H] = (CARD_CARDBUS | CARD_XV | CARD_YV),
-+
-+ /* VS1 tied to CD2, VS2 float */
-+ [IN_VS1 | IN_VS2 | IN_CD2_VS1H] = (CARD_CARDBUS | CARD_YV),
-+
-+ /* VS2 grounded, VS1 is tied to CD1, CD2 is grounded */
-+ [IN_VS1 | IN_CD1_VS1H] = 0, /* ignore cardbay */
-+};
-+
-+/*
-+ * poll hardware to check card insertion status
-+ */
-+static unsigned int __get_socket_status(struct bcm63xx_pcmcia_socket *skt)
-+{
-+ unsigned int stat;
-+ u32 val;
-+
-+ stat = 0;
-+
-+ /* check CD for card presence */
-+ val = pcmcia_readl(skt, PCMCIA_C1_REG);
-+
-+ if (!(val & PCMCIA_C1_CD1_MASK) && !(val & PCMCIA_C1_CD2_MASK))
-+ stat |= SS_DETECT;
-+
-+ /* if new insertion, detect cardtype */
-+ if ((stat & SS_DETECT) && !skt->card_detected) {
-+ unsigned int stat = 0;
-+
-+ /* float VS1, float VS2 */
-+ val |= PCMCIA_C1_VS1OE_MASK;
-+ val |= PCMCIA_C1_VS2OE_MASK;
-+ pcmcia_writel(skt, val, PCMCIA_C1_REG);
-+
-+ /* wait for output to stabilize and read VS[12] */
-+ udelay(10);
-+ val = pcmcia_readl(skt, PCMCIA_C1_REG);
-+ stat |= (val & PCMCIA_C1_VS1_MASK) ? IN_VS1 : 0;
-+ stat |= (val & PCMCIA_C1_VS2_MASK) ? IN_VS2 : 0;
-+
-+ /* drive VS1 low, float VS2 */
-+ val &= ~PCMCIA_C1_VS1OE_MASK;
-+ val |= PCMCIA_C1_VS2OE_MASK;
-+ pcmcia_writel(skt, val, PCMCIA_C1_REG);
-+
-+ /* wait for output to stabilize and read CD[12] */
-+ udelay(10);
-+ val = pcmcia_readl(skt, PCMCIA_C1_REG);
-+ stat |= (val & PCMCIA_C1_CD1_MASK) ? IN_CD1_VS2H : 0;
-+ stat |= (val & PCMCIA_C1_CD2_MASK) ? IN_CD2_VS2H : 0;
-+
-+ /* float VS1, drive VS2 low */
-+ val |= PCMCIA_C1_VS1OE_MASK;
-+ val &= ~PCMCIA_C1_VS2OE_MASK;
-+ pcmcia_writel(skt, val, PCMCIA_C1_REG);
-+
-+ /* wait for output to stabilize and read CD[12] */
-+ udelay(10);
-+ val = pcmcia_readl(skt, PCMCIA_C1_REG);
-+ stat |= (val & PCMCIA_C1_CD1_MASK) ? IN_CD1_VS1H : 0;
-+ stat |= (val & PCMCIA_C1_CD2_MASK) ? IN_CD2_VS1H : 0;
-+
-+ /* guess cardtype from all this */
-+ skt->card_type = vscd_to_cardtype[stat];
-+ if (!skt->card_type)
-+ printk(KERN_ERR PFX "unsupported card type\n");
-+
-+ /* drive both VS pin to 0 again */
-+ val &= ~(PCMCIA_C1_VS1OE_MASK | PCMCIA_C1_VS2OE_MASK);
-+
-+ /* enable correct logic */
-+ val &= ~(PCMCIA_C1_EN_PCMCIA_MASK | PCMCIA_C1_EN_CARDBUS_MASK);
-+ if (skt->card_type & CARD_PCCARD)
-+ val |= PCMCIA_C1_EN_PCMCIA_MASK;
-+ else
-+ val |= PCMCIA_C1_EN_CARDBUS_MASK;
-+
-+ pcmcia_writel(skt, val, PCMCIA_C1_REG);
-+ }
-+ skt->card_detected = (stat & SS_DETECT) ? 1 : 0;
-+
-+ /* report card type/voltage */
-+ if (skt->card_type & CARD_CARDBUS)
-+ stat |= SS_CARDBUS;
-+ if (skt->card_type & CARD_3V)
-+ stat |= SS_3VCARD;
-+ if (skt->card_type & CARD_XV)
-+ stat |= SS_XVCARD;
-+ stat |= SS_POWERON;
-+
-+ if (gpio_get_value(skt->pd->ready_gpio))
-+ stat |= SS_READY;
-+
-+ return stat;
-+}
-+
-+/*
-+ * core request to get current socket status
-+ */
-+static int bcm63xx_pcmcia_get_status(struct pcmcia_socket *sock,
-+ unsigned int *status)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+
-+ skt = sock->driver_data;
-+
-+ spin_lock_bh(&skt->lock);
-+ *status = __get_socket_status(skt);
-+ spin_unlock_bh(&skt->lock);
-+
-+ return 0;
-+}
-+
-+/*
-+ * socket polling timer callback
-+ */
-+static void bcm63xx_pcmcia_poll(unsigned long data)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ unsigned int stat, events;
-+
-+ skt = (struct bcm63xx_pcmcia_socket *)data;
-+
-+ spin_lock_bh(&skt->lock);
-+
-+ stat = __get_socket_status(skt);
-+
-+ /* keep only changed bits, and mask with required one from the
-+ * core */
-+ events = (stat ^ skt->old_status) & skt->requested_state.csc_mask;
-+ skt->old_status = stat;
-+ spin_unlock_bh(&skt->lock);
-+
-+ if (events)
-+ pcmcia_parse_events(&skt->socket, events);
-+
-+ mod_timer(&skt->timer,
-+ jiffies + msecs_to_jiffies(BCM63XX_PCMCIA_POLL_RATE));
-+}
-+
-+static int bcm63xx_pcmcia_set_io_map(struct pcmcia_socket *sock,
-+ struct pccard_io_map *map)
-+{
-+ /* this doesn't seem to be called by pcmcia layer if static
-+ * mapping is used */
-+ return 0;
-+}
-+
-+static int bcm63xx_pcmcia_set_mem_map(struct pcmcia_socket *sock,
-+ struct pccard_mem_map *map)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ struct resource *res;
-+
-+ skt = sock->driver_data;
-+ if (map->flags & MAP_ATTRIB)
-+ res = skt->attr_res;
-+ else
-+ res = skt->common_res;
-+
-+ map->static_start = res->start + map->card_start;
-+ return 0;
-+}
-+
-+static struct pccard_operations bcm63xx_pcmcia_operations = {
-+ .init = bcm63xx_pcmcia_sock_init,
-+ .suspend = bcm63xx_pcmcia_suspend,
-+ .get_status = bcm63xx_pcmcia_get_status,
-+ .set_socket = bcm63xx_pcmcia_set_socket,
-+ .set_io_map = bcm63xx_pcmcia_set_io_map,
-+ .set_mem_map = bcm63xx_pcmcia_set_mem_map,
-+};
-+
-+/*
-+ * register pcmcia socket to core
-+ */
-+static int bcm63xx_drv_pcmcia_probe(struct platform_device *pdev)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ struct pcmcia_socket *sock;
-+ struct resource *res, *irq_res;
-+ unsigned int regmem_size = 0, iomem_size = 0;
-+ u32 val;
-+ int ret;
-+
-+ skt = kzalloc(sizeof(*skt), GFP_KERNEL);
-+ if (!skt)
-+ return -ENOMEM;
-+ spin_lock_init(&skt->lock);
-+ sock = &skt->socket;
-+ sock->driver_data = skt;
-+
-+ /* make sure we have all resources we need */
-+ skt->common_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-+ skt->attr_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
-+ irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-+ skt->pd = pdev->dev.platform_data;
-+ if (!skt->common_res || !skt->attr_res || !irq_res || !skt->pd) {
-+ ret = -EINVAL;
-+ goto err;
-+ }
-+
-+ /* remap pcmcia registers */
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ regmem_size = res->end - res->start + 1;
-+ if (!request_mem_region(res->start, regmem_size, "bcm63xx_pcmcia")) {
-+ ret = -EINVAL;
-+ goto err;
-+ }
-+ skt->reg_res = res;
-+
-+ skt->base = ioremap(res->start, regmem_size);
-+ if (!skt->base) {
-+ ret = -ENOMEM;
-+ goto err;
-+ }
-+
-+ /* remap io registers */
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
-+ iomem_size = res->end - res->start + 1;
-+ skt->io_base = ioremap(res->start, iomem_size);
-+ if (!skt->io_base) {
-+ ret = -ENOMEM;
-+ goto err;
-+ }
-+
-+ /* resources are static */
-+ sock->resource_ops = &pccard_static_ops;
-+ sock->ops = &bcm63xx_pcmcia_operations;
-+ sock->owner = THIS_MODULE;
-+ sock->dev.parent = &pdev->dev;
-+ sock->features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
-+ sock->io_offset = (unsigned long)skt->io_base;
-+ sock->pci_irq = irq_res->start;
-+
-+#ifdef CONFIG_CARDBUS
-+ sock->cb_dev = bcm63xx_cb_dev;
-+ if (bcm63xx_cb_dev)
-+ sock->features |= SS_CAP_CARDBUS;
-+#endif
-+
-+ /* assume common & attribute memory have the same size */
-+ sock->map_size = skt->common_res->end - skt->common_res->start + 1;
-+
-+ /* initialize polling timer */
-+ setup_timer(&skt->timer, bcm63xx_pcmcia_poll, (unsigned long)skt);
-+
-+ /* initialize pcmcia control register, drive VS[12] to 0,
-+ * leave CB IDSEL to the old value since it is set by the PCI
-+ * layer */
-+ val = pcmcia_readl(skt, PCMCIA_C1_REG);
-+ val &= PCMCIA_C1_CBIDSEL_MASK;
-+ val |= PCMCIA_C1_EN_PCMCIA_GPIO_MASK;
-+ pcmcia_writel(skt, val, PCMCIA_C1_REG);
-+
-+ /* FIXME set correct pcmcia timings */
-+ val = PCMCIA_C2_DATA16_MASK;
-+ val |= 10 << PCMCIA_C2_RWCOUNT_SHIFT;
-+ val |= 6 << PCMCIA_C2_INACTIVE_SHIFT;
-+ val |= 3 << PCMCIA_C2_SETUP_SHIFT;
-+ val |= 3 << PCMCIA_C2_HOLD_SHIFT;
-+ pcmcia_writel(skt, val, PCMCIA_C2_REG);
-+
-+ ret = pcmcia_register_socket(sock);
-+ if (ret)
-+ goto err;
-+
-+ /* start polling socket */
-+ mod_timer(&skt->timer,
-+ jiffies + msecs_to_jiffies(BCM63XX_PCMCIA_POLL_RATE));
-+
-+ platform_set_drvdata(pdev, skt);
-+ return 0;
-+
-+err:
-+ if (skt->io_base)
-+ iounmap(skt->io_base);
-+ if (skt->base)
-+ iounmap(skt->base);
-+ if (skt->reg_res)
-+ release_mem_region(skt->reg_res->start, regmem_size);
-+ kfree(skt);
-+ return ret;
-+}
-+
-+static int bcm63xx_drv_pcmcia_remove(struct platform_device *pdev)
-+{
-+ struct bcm63xx_pcmcia_socket *skt;
-+ struct resource *res;
-+
-+ skt = platform_get_drvdata(pdev);
-+ del_timer_sync(&skt->timer);
-+ iounmap(skt->base);
-+ iounmap(skt->io_base);
-+ res = skt->reg_res;
-+ release_mem_region(res->start, res->end - res->start + 1);
-+ kfree(skt);
-+ return 0;
-+}
-+
-+struct platform_driver bcm63xx_pcmcia_driver = {
-+ .probe = bcm63xx_drv_pcmcia_probe,
-+ .remove = __devexit_p(bcm63xx_drv_pcmcia_remove),
-+ .driver = {
-+ .name = "bcm63xx_pcmcia",
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+#ifdef CONFIG_CARDBUS
-+static int __devinit bcm63xx_cb_probe(struct pci_dev *dev,
-+ const struct pci_device_id *id)
-+{
-+ /* keep pci device */
-+ bcm63xx_cb_dev = dev;
-+ return platform_driver_register(&bcm63xx_pcmcia_driver);
-+}
-+
-+static void __devexit bcm63xx_cb_exit(struct pci_dev *dev)
-+{
-+ platform_driver_unregister(&bcm63xx_pcmcia_driver);
-+ bcm63xx_cb_dev = NULL;
-+}
-+
-+static struct pci_device_id bcm63xx_cb_table[] = {
-+ {
-+ .vendor = PCI_VENDOR_ID_BROADCOM,
-+ .device = PCI_ANY_ID,
-+ .subvendor = PCI_VENDOR_ID_BROADCOM,
-+ .subdevice = PCI_ANY_ID,
-+ .class = PCI_CLASS_BRIDGE_CARDBUS << 8,
-+ .class_mask = ~0,
-+ },
-+};
-+
-+MODULE_DEVICE_TABLE(pci, bcm63xx_cb_table);
-+
-+static struct pci_driver bcm63xx_cardbus_driver = {
-+ .name = "yenta_cardbus",
-+ .id_table = bcm63xx_cb_table,
-+ .probe = bcm63xx_cb_probe,
-+ .remove = __devexit_p(bcm63xx_cb_exit),
-+};
-+#endif
-+
-+/*
-+ * if cardbus support is enabled, register our platform device after
-+ * our fake cardbus bridge has been registered
-+ */
-+static int __init bcm63xx_pcmcia_init(void)
-+{
-+#ifdef CONFIG_CARDBUS
-+ return pci_register_driver(&bcm63xx_cardbus_driver);
-+#else
-+ return platform_driver_register(&bcm63xx_pcmcia_driver);
-+#endif
-+}
-+
-+static void __exit bcm63xx_pcmcia_exit(void)
-+{
-+#ifdef CONFIG_CARDBUS
-+ return pci_unregister_driver(&bcm63xx_cardbus_driver);
-+#else
-+ platform_driver_unregister(&bcm63xx_pcmcia_driver);
-+#endif
-+}
-+
-+module_init(bcm63xx_pcmcia_init);
-+module_exit(bcm63xx_pcmcia_exit);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
-+MODULE_DESCRIPTION("Linux PCMCIA Card Services: bcm63xx Socket Controller");
---- /dev/null
-+++ b/drivers/pcmcia/bcm63xx_pcmcia.h
-@@ -0,0 +1,65 @@
-+#ifndef BCM63XX_PCMCIA_H_
-+#define BCM63XX_PCMCIA_H_
-+
-+#include <linux/types.h>
-+#include <linux/timer.h>
-+#include <pcmcia/ss.h>
-+#include <bcm63xx_dev_pcmcia.h>
-+
-+/* socket polling rate in ms */
-+#define BCM63XX_PCMCIA_POLL_RATE 500
-+
-+enum {
-+ CARD_CARDBUS = (1 << 0),
-+
-+ CARD_PCCARD = (1 << 1),
-+
-+ CARD_5V = (1 << 2),
-+
-+ CARD_3V = (1 << 3),
-+
-+ CARD_XV = (1 << 4),
-+
-+ CARD_YV = (1 << 5),
-+};
-+
-+struct bcm63xx_pcmcia_socket {
-+ struct pcmcia_socket socket;
-+
-+ /* platform specific data */
-+ struct bcm63xx_pcmcia_platform_data *pd;
-+
-+ /* all regs access are protected by this spinlock */
-+ spinlock_t lock;
-+
-+ /* pcmcia registers resource */
-+ struct resource *reg_res;
-+
-+ /* base remapped address of registers */
-+ void __iomem *base;
-+
-+ /* whether a card is detected at the moment */
-+ int card_detected;
-+
-+ /* type of detected card (mask of above enum) */
-+ u8 card_type;
-+
-+ /* keep last socket status to implement event reporting */
-+ unsigned int old_status;
-+
-+ /* backup of requested socket state */
-+ socket_state_t requested_state;
-+
-+ /* timer used for socket status polling */
-+ struct timer_list timer;
-+
-+ /* attribute/common memory resources */
-+ struct resource *attr_res;
-+ struct resource *common_res;
-+ struct resource *io_res;
-+
-+ /* base address of io memory */
-+ void __iomem *io_base;
-+};
-+
-+#endif /* BCM63XX_PCMCIA_H_ */
---- /dev/null
-+++ b/include/asm-mips/mach-bcm63xx/bcm63xx_dev_pcmcia.h
-@@ -0,0 +1,13 @@
-+#ifndef BCM63XX_DEV_PCMCIA_H_
-+#define BCM63XX_DEV_PCMCIA_H_
-+
-+/*
-+ * PCMCIA driver platform data
-+ */
-+struct bcm63xx_pcmcia_platform_data {
-+ unsigned int ready_gpio;
-+};
-+
-+int bcm63xx_pcmcia_register(void);
-+
-+#endif /* BCM63XX_DEV_PCMCIA_H_ */
projects / openwrt.git / blobdiff