[PATCH v3] MIPS: BCM63xx: Add PCMCIA & Cardbus support.
Maxime Bizon
mbizon at freebox.fr
Mon Sep 28 08:49:43 EDT 2009
On Fri, 2009-09-25 at 20:37 +0400, Sergei Shtylyov wrote:
Hi Sergei,
> Then why initialize it?
fixed
> Shouln't this be array of structures instead?
fixed
> Is this GPIO selection really chip- and not board-specific?
yes
> I don't think having both board code and the driver in a single patch is
> a good idea. I'd put the driver in its own separate patch...
Ralf seems ok with merging as-is, next time I'll split board support and
driver I guess.
> Are you sure you can drive any Broadcom's bridge?
fixed
> Why it's called the same as 'yenta_cardbus_driver' and not
> "bcm63xx_cardbus"?
copy/paste, fixed
> Why so many empty lines in between?
fixed
Updated patch.
Signed-off-by: Maxime Bizon <mbizon at freebox.fr>
Signed-off-by: Ralf Baechle <ralf at linux-mips.org>
Reviewed-by: Wolfram Sang <w.sang at pengutronix.de>
---
arch/mips/bcm63xx/Makefile | 2 +-
arch/mips/bcm63xx/boards/board_bcm963xx.c | 4 +
arch/mips/bcm63xx/dev-pcmcia.c | 144 ++++++
.../include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h | 13 +
drivers/pcmcia/Kconfig | 4 +
drivers/pcmcia/Makefile | 1 +
drivers/pcmcia/bcm63xx_pcmcia.c | 536 ++++++++++++++++++++
drivers/pcmcia/bcm63xx_pcmcia.h | 60 +++
8 files changed, 763 insertions(+), 1 deletions(-)
create mode 100644 arch/mips/bcm63xx/dev-pcmcia.c
create mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
create mode 100644 drivers/pcmcia/bcm63xx_pcmcia.c
create mode 100644 drivers/pcmcia/bcm63xx_pcmcia.h
diff --git a/arch/mips/bcm63xx/Makefile b/arch/mips/bcm63xx/Makefile
index cff75de..c146d1e 100644
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,5 +1,5 @@
obj-y += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
- dev-dsp.o dev-enet.o dev-uart.o
+ dev-dsp.o dev-enet.o dev-pcmcia.o dev-uart.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-y += boards/
diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c
index d3fdf27..e3e6205 100644
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -24,6 +24,7 @@
#include <bcm63xx_dev_pci.h>
#include <bcm63xx_dev_enet.h>
#include <bcm63xx_dev_dsp.h>
+#include <bcm63xx_dev_pcmcia.h>
#include <bcm63xx_dev_uart.h>
#include <board_bcm963xx.h>
@@ -796,6 +797,9 @@ int __init board_register_devices(void)
bcm63xx_uart_register();
+ if (board.has_pccard)
+ bcm63xx_pcmcia_register();
+
if (board.has_enet0 &&
!board_get_mac_address(board.enet0.mac_addr))
bcm63xx_enet_register(0, &board.enet0);
diff --git a/arch/mips/bcm63xx/dev-pcmcia.c b/arch/mips/bcm63xx/dev-pcmcia.c
new file mode 100644
index 0000000..de4d917
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-pcmcia.c
@@ -0,0 +1,144 @@
+/*
+ * 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 at freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/bootinfo.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cs.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_pcmcia.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+static struct resource pcmcia_resources[] = {
+ /* pcmcia registers */
+ {
+ /* start & end filled at runtime */
+ .flags = IORESOURCE_MEM,
+ },
+
+ /* pcmcia memory zone resources */
+ {
+ .start = BCM_PCMCIA_COMMON_BASE_PA,
+ .end = BCM_PCMCIA_COMMON_END_PA,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = BCM_PCMCIA_ATTR_BASE_PA,
+ .end = BCM_PCMCIA_ATTR_END_PA,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = BCM_PCMCIA_IO_BASE_PA,
+ .end = BCM_PCMCIA_IO_END_PA,
+ .flags = IORESOURCE_MEM,
+ },
+
+ /* PCMCIA irq */
+ {
+ /* start filled at runtime */
+ .flags = IORESOURCE_IRQ,
+ },
+
+ /* declare PCMCIA IO resource also */
+ {
+ .start = BCM_PCMCIA_IO_BASE_PA,
+ .end = BCM_PCMCIA_IO_END_PA,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct bcm63xx_pcmcia_platform_data pd;
+
+static struct platform_device bcm63xx_pcmcia_device = {
+ .name = "bcm63xx_pcmcia",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(pcmcia_resources),
+ .resource = pcmcia_resources,
+ .dev = {
+ .platform_data = &pd,
+ },
+};
+
+static int __init config_pcmcia_cs(unsigned int cs,
+ u32 base, unsigned int size)
+{
+ int ret;
+
+ ret = bcm63xx_set_cs_status(cs, 0);
+ if (!ret)
+ ret = bcm63xx_set_cs_base(cs, base, size);
+ if (!ret)
+ ret = bcm63xx_set_cs_status(cs, 1);
+ return ret;
+}
+
+static const __initdata struct {
+ unsigned int cs;
+ unsigned int base;
+ unsigned int size;
+} pcmcia_cs[3] = {
+ {
+ .cs = MPI_CS_PCMCIA_COMMON,
+ .base = BCM_PCMCIA_COMMON_BASE_PA,
+ .size = BCM_PCMCIA_COMMON_SIZE
+ },
+ {
+ .cs = MPI_CS_PCMCIA_ATTR,
+ .base = BCM_PCMCIA_ATTR_BASE_PA,
+ .size = BCM_PCMCIA_ATTR_SIZE
+ },
+ {
+ .cs = MPI_CS_PCMCIA_IO,
+ .base = BCM_PCMCIA_IO_BASE_PA,
+ .size = BCM_PCMCIA_IO_SIZE
+ },
+};
+
+int __init bcm63xx_pcmcia_register(void)
+{
+ int ret, i;
+
+ if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
+ return 0;
+
+ /* use correct pcmcia ready gpio depending on processor */
+ switch (bcm63xx_get_cpu_id()) {
+ case BCM6348_CPU_ID:
+ pd.ready_gpio = 22;
+ break;
+
+ case BCM6358_CPU_ID:
+ pd.ready_gpio = 18;
+ break;
+
+ default:
+ return -ENODEV;
+ }
+
+ pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
+ pcmcia_resources[0].end = pcmcia_resources[0].start +
+ RSET_PCMCIA_SIZE - 1;
+ pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
+
+ /* configure pcmcia chip selects */
+ for (i = 0; i < 3; i++) {
+ ret = config_pcmcia_cs(pcmcia_cs[i].cs,
+ pcmcia_cs[i].base,
+ pcmcia_cs[i].size);
+ if (ret)
+ goto out_err;
+ }
+
+ return platform_device_register(&bcm63xx_pcmcia_device);
+
+out_err:
+ printk(KERN_ERR "unable to set pcmcia chip select\n");
+ return ret;
+}
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
new file mode 100644
index 0000000..2beb396
--- /dev/null
+++ b/arch/mips/include/asm/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_ */
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index fbf965b..17f38a7 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -192,6 +192,10 @@ config PCMCIA_AU1X00
tristate "Au1x00 pcmcia support"
depends on SOC_AU1X00 && PCMCIA
+config PCMCIA_BCM63XX
+ tristate "bcm63xx pcmcia support"
+ depends on BCM63XX && PCMCIA
+
config PCMCIA_SA1100
tristate "SA1100 support"
depends on ARM && ARCH_SA1100 && PCMCIA
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index 047394d..1ee57f0 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_PCMCIA_SA1111) += sa11xx_core.o sa1111_cs.o
obj-$(CONFIG_M32R_PCC) += m32r_pcc.o
obj-$(CONFIG_M32R_CFC) += m32r_cfc.o
obj-$(CONFIG_PCMCIA_AU1X00) += au1x00_ss.o
+obj-$(CONFIG_PCMCIA_BCM63XX) += bcm63xx_pcmcia.o
obj-$(CONFIG_PCMCIA_VRC4171) += vrc4171_card.o
obj-$(CONFIG_PCMCIA_VRC4173) += vrc4173_cardu.o
obj-$(CONFIG_OMAP_CF) += omap_cf.o
diff --git a/drivers/pcmcia/bcm63xx_pcmcia.c b/drivers/pcmcia/bcm63xx_pcmcia.c
new file mode 100644
index 0000000..bc88a3b
--- /dev/null
+++ b/drivers/pcmcia/bcm63xx_pcmcia.c
@@ -0,0 +1,536 @@
+/*
+ * 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 at 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);
+}
+
+/*
+ * This callback should (re-)initialise the socket, turn on status
+ * interrupts and PCMCIA bus, and wait for power to stabilise so that
+ * the card status signals report correctly.
+ *
+ * Hardware cannot do that.
+ */
+static int bcm63xx_pcmcia_sock_init(struct pcmcia_socket *sock)
+{
+ return 0;
+}
+
+/*
+ * This callback should remove power on the socket, disable IRQs from
+ * the card, turn off status interrupts, and disable the PCMCIA bus.
+ *
+ * Hardware cannot do that.
+ */
+static int bcm63xx_pcmcia_suspend(struct pcmcia_socket *sock)
+{
+ 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);
+
+ /* note: hardware cannot control socket power, so we will
+ * always report SS_POWERON */
+
+ /* 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)
+ dev_err(&skt->socket.dev, "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 __devinit 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 = resource_size(res);
+ 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 = resource_size(res);
+ 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 = resource_size(skt->common_res);
+
+ /* 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);
+
+ /*
+ * Hardware has only one set of timings registers, not one for
+ * each memory access type, so we configure them for the
+ * slowest one: attribute memory.
+ */
+ 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 __devexit 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, resource_size(res));
+ 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 = BCM6348_CPU_ID,
+ .subvendor = PCI_VENDOR_ID_BROADCOM,
+ .subdevice = PCI_ANY_ID,
+ .class = PCI_CLASS_BRIDGE_CARDBUS << 8,
+ .class_mask = ~0,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_BROADCOM,
+ .device = BCM6358_CPU_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 = "bcm63xx_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 at freebox.fr>");
+MODULE_DESCRIPTION("Linux PCMCIA Card Services: bcm63xx Socket Controller");
diff --git a/drivers/pcmcia/bcm63xx_pcmcia.h b/drivers/pcmcia/bcm63xx_pcmcia.h
new file mode 100644
index 0000000..ed95739
--- /dev/null
+++ b/drivers/pcmcia/bcm63xx_pcmcia.h
@@ -0,0 +1,60 @@
+#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_ */
--
1.6.0.4
--
Maxime
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