MIPS: PCMCIA: new socket driver for Au1000 demoboards.

New PCMCIA socket driver for all Db/Pb1xxx boards (except Pb1000),
which replaces au1000_db1x00.c and (most of) au1000_pb1x00.c.
Notable improvements:
        - supports Db1000, DB/PB1100/1500/1550/1200.
        - support for carddetect and statuschange IRQs.
        - pcmcia socket mem/io/attr areas and irqs passed through
          platform resource information.
        - doesn't freeze system during card insertion/ejection like
          the one it replaces.
        - boardtype is automatically detected using BCSR ID register.

Run-tested on the DB1200.

Cc: Linux-PCMCIA <linux-pcmcia@lists.infradead.org>
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 16 insertions, 7 deletions

diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
index 117f99f70649..2b76a57c4947 100644
--- a/arch/mips/alchemy/common/platform.c
+++ b/arch/mips/alchemy/common/platform.c
@@ -308,11 +308,6 @@ static struct platform_device au1200_mmc1_device = {
 #endif /* #ifndef CONFIG_MIPS_DB1200 */
 #endif /* #ifdef CONFIG_SOC_AU1200 */
 
-static struct platform_device au1x00_pcmcia_device = {
-        .name           = "au1x00-pcmcia",
-        .id             = 0,
-};
-
 /* All Alchemy demoboards with I2C have this #define in their headers */
 #ifdef SMBUS_PSC_BASE
 static struct resource pbdb_smbus_resources[] = {
@@ -334,7 +329,6 @@ static struct platform_device pbdb_smbus_device = {
 static struct platform_device *au1xxx_platform_devices[] __initdata = {
         &au1xx0_uart_device,
         &au1xxx_usb_ohci_device,
-        &au1x00_pcmcia_device,
 #ifdef CONFIG_FB_AU1100
         &au1100_lcd_device,
 #endif
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
index 6184baa56786..375984e5c2e6 100644
--- a/arch/mips/alchemy/common/setup.c
+++ b/arch/mips/alchemy/common/setup.c
@@ -107,7 +107,8 @@ phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
          * The pseudo address we use is 0xF400 0000. Any address over
          * 0xF400 0000 is a PCMCIA pseudo address.
          */
-        if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF))
+        if ((phys_addr >= PCMCIA_ATTR_PSEUDO_PHYS) &&
+            (phys_addr < PCMCIA_PSEUDO_END))
                 return (phys_t)(phys_addr << 4);
 
         /* default nop */
diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h
index 05078224e933..fceeca883359 100644
--- a/arch/mips/include/asm/mach-au1x00/au1000.h
+++ b/arch/mips/include/asm/mach-au1x00/au1000.h
@@ -1724,6 +1724,20 @@ enum soc_au1200_ints {
 
 #endif
 
+/*
+ * All Au1xx0 SOCs have a PCMCIA controller.
+ * We setup our 32-bit pseudo addresses to be equal to the
+ * 36-bit addr >> 4, to make it easier to check the address
+ * and fix it.
+ * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000.
+ * The pseudo address we use is 0xF400 0000. Any address over
+ * 0xF400 0000 is a PCMCIA pseudo address.
+ */
+#define PCMCIA_IO_PSEUDO_PHYS   (PCMCIA_IO_PHYS_ADDR >> 4)
+#define PCMCIA_ATTR_PSEUDO_PHYS (PCMCIA_ATTR_PHYS_ADDR >> 4)
+#define PCMCIA_MEM_PSEUDO_PHYS  (PCMCIA_MEM_PHYS_ADDR >> 4)
+#define PCMCIA_PSEUDO_END       (0xffffffff)
+
 #ifndef _LANGUAGE_ASSEMBLY
 typedef volatile struct {
         /* 0x0000 */ u32 toytrim;