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Subject[PATCH] [ARM] pxa: move common MFP handling code into plat-pxa
Date
From: Eric Miao <eric.miao@marvell.com>

Signed-off-by: Eric Miao <eric.miao@marvell.com>
---
arch/arm/mach-pxa/include/mach/mfp-pxa25x.h | 1 -
arch/arm/mach-pxa/include/mach/mfp-pxa27x.h | 1 -
arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h | 2 +-
arch/arm/mach-pxa/include/mach/mfp-pxa300.h | 1 -
arch/arm/mach-pxa/include/mach/mfp-pxa320.h | 1 -
arch/arm/mach-pxa/include/mach/mfp-pxa3xx.h | 130 ++--------
arch/arm/mach-pxa/include/mach/mfp-pxa930.h | 1 -
arch/arm/mach-pxa/mfp-pxa3xx.c | 189 +--------------
arch/arm/mach-pxa/pxa300.c | 10 +-
arch/arm/mach-pxa/pxa320.c | 6 +-
arch/arm/mach-pxa/pxa930.c | 6 +-
arch/arm/plat-pxa/Makefile | 2 +-
arch/arm/plat-pxa/include/plat/mfp.h | 369 +++++++++++++++++++++++++++
arch/arm/plat-pxa/mfp.c | 278 ++++++++++++++++++++
14 files changed, 680 insertions(+), 317 deletions(-)
create mode 100644 arch/arm/plat-pxa/include/plat/mfp.h
create mode 100644 arch/arm/plat-pxa/mfp.c
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa25x.h b/arch/arm/mach-pxa/include/mach/mfp-pxa25x.h
index a72869b..b13dc02 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa25x.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa25x.h
@@ -1,7 +1,6 @@
#ifndef __ASM_ARCH_MFP_PXA25X_H
#define __ASM_ARCH_MFP_PXA25X_H

-#include <mach/mfp.h>
#include <mach/mfp-pxa2xx.h>

/* GPIO */
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
index da4f85a..6543c05 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
@@ -8,7 +8,6 @@
* specific controller, and this should work in most cases.
*/

-#include <mach/mfp.h>
#include <mach/mfp-pxa2xx.h>

/* Note: GPIO3/GPIO4 will be driven by Power I2C when PCFR/PI2C_EN
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h b/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h
index 3e92115..658b28e 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h
@@ -1,7 +1,7 @@
#ifndef __ASM_ARCH_MFP_PXA2XX_H
#define __ASM_ARCH_MFP_PXA2XX_H

-#include <mach/mfp.h>
+#include <plat/mfp.h>

/*
* the following MFP_xxx bit definitions in mfp.h are re-used for pxa2xx:
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa300.h b/arch/arm/mach-pxa/include/mach/mfp-pxa300.h
index bc1fb33..86d3312 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa300.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa300.h
@@ -15,7 +15,6 @@
#ifndef __ASM_ARCH_MFP_PXA300_H
#define __ASM_ARCH_MFP_PXA300_H

-#include <mach/mfp.h>
#include <mach/mfp-pxa3xx.h>

/* GPIO */
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa320.h b/arch/arm/mach-pxa/include/mach/mfp-pxa320.h
index 67f8385..b8e2855 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa320.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa320.h
@@ -15,7 +15,6 @@
#ifndef __ASM_ARCH_MFP_PXA320_H
#define __ASM_ARCH_MFP_PXA320_H

-#include <mach/mfp.h>
#include <mach/mfp-pxa3xx.h>

/* GPIO */
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa3xx.h b/arch/arm/mach-pxa/include/mach/mfp-pxa3xx.h
index 1f6b35c..d375195 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa3xx.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa3xx.h
@@ -1,68 +1,9 @@
#ifndef __ASM_ARCH_MFP_PXA3XX_H
#define __ASM_ARCH_MFP_PXA3XX_H

-#define MFPR_BASE (0x40e10000)
-#define MFPR_SIZE (PAGE_SIZE)
-
-/* MFPR register bit definitions */
-#define MFPR_PULL_SEL (0x1 << 15)
-#define MFPR_PULLUP_EN (0x1 << 14)
-#define MFPR_PULLDOWN_EN (0x1 << 13)
-#define MFPR_SLEEP_SEL (0x1 << 9)
-#define MFPR_SLEEP_OE_N (0x1 << 7)
-#define MFPR_EDGE_CLEAR (0x1 << 6)
-#define MFPR_EDGE_FALL_EN (0x1 << 5)
-#define MFPR_EDGE_RISE_EN (0x1 << 4)
-
-#define MFPR_SLEEP_DATA(x) ((x) << 8)
-#define MFPR_DRIVE(x) (((x) & 0x7) << 10)
-#define MFPR_AF_SEL(x) (((x) & 0x7) << 0)
+#include <plat/mfp.h>

-#define MFPR_EDGE_NONE (0)
-#define MFPR_EDGE_RISE (MFPR_EDGE_RISE_EN)
-#define MFPR_EDGE_FALL (MFPR_EDGE_FALL_EN)
-#define MFPR_EDGE_BOTH (MFPR_EDGE_RISE | MFPR_EDGE_FALL)
-
-/*
- * Table that determines the low power modes outputs, with actual settings
- * used in parentheses for don't-care values. Except for the float output,
- * the configured driven and pulled levels match, so if there is a need for
- * non-LPM pulled output, the same configuration could probably be used.
- *
- * Output value sleep_oe_n sleep_data pullup_en pulldown_en pull_sel
- * (bit 7) (bit 8) (bit 14) (bit 13) (bit 15)
- *
- * Input 0 X(0) X(0) X(0) 0
- * Drive 0 0 0 0 X(1) 0
- * Drive 1 0 1 X(1) 0 0
- * Pull hi (1) 1 X(1) 1 0 0
- * Pull lo (0) 1 X(0) 0 1 0
- * Z (float) 1 X(0) 0 0 0
- */
-#define MFPR_LPM_INPUT (0)
-#define MFPR_LPM_DRIVE_LOW (MFPR_SLEEP_DATA(0) | MFPR_PULLDOWN_EN)
-#define MFPR_LPM_DRIVE_HIGH (MFPR_SLEEP_DATA(1) | MFPR_PULLUP_EN)
-#define MFPR_LPM_PULL_LOW (MFPR_LPM_DRIVE_LOW | MFPR_SLEEP_OE_N)
-#define MFPR_LPM_PULL_HIGH (MFPR_LPM_DRIVE_HIGH | MFPR_SLEEP_OE_N)
-#define MFPR_LPM_FLOAT (MFPR_SLEEP_OE_N)
-#define MFPR_LPM_MASK (0xe080)
-
-/*
- * The pullup and pulldown state of the MFP pin at run mode is by default
- * determined by the selected alternate function. In case that some buggy
- * devices need to override this default behavior, the definitions below
- * indicates the setting of corresponding MFPR bits
- *
- * Definition pull_sel pullup_en pulldown_en
- * MFPR_PULL_NONE 0 0 0
- * MFPR_PULL_LOW 1 0 1
- * MFPR_PULL_HIGH 1 1 0
- * MFPR_PULL_BOTH 1 1 1
- */
-#define MFPR_PULL_NONE (0)
-#define MFPR_PULL_LOW (MFPR_PULL_SEL | MFPR_PULLDOWN_EN)
-#define MFPR_PULL_BOTH (MFPR_PULL_LOW | MFPR_PULLUP_EN)
-#define MFPR_PULL_HIGH (MFPR_PULL_SEL | MFPR_PULLUP_EN)
+#define MFPR_BASE (0x40e10000)

/* PXA3xx common MFP configurations - processor specific ones defined
* in mfp-pxa300.h and mfp-pxa320.h
@@ -197,56 +138,21 @@
#define GPIO5_2_GPIO MFP_CFG(GPIO5_2, AF0)
#define GPIO6_2_GPIO MFP_CFG(GPIO6_2, AF0)

-/*
- * each MFP pin will have a MFPR register, since the offset of the
- * register varies between processors, the processor specific code
- * should initialize the pin offsets by pxa3xx_mfp_init_addr()
- *
- * pxa3xx_mfp_init_addr - accepts a table of "pxa3xx_mfp_addr_map"
- * structure, which represents a range of MFP pins from "start" to
- * "end", with the offset begining at "offset", to define a single
- * pin, let "end" = -1
- *
- * use
- *
- * MFP_ADDR_X() to define a range of pins
- * MFP_ADDR() to define a single pin
- * MFP_ADDR_END to signal the end of pin offset definitions
- */
-struct pxa3xx_mfp_addr_map {
- unsigned int start;
- unsigned int end;
- unsigned long offset;
-};
-
-#define MFP_ADDR_X(start, end, offset) \
- { MFP_PIN_##start, MFP_PIN_##end, offset }
-
-#define MFP_ADDR(pin, offset) \
- { MFP_PIN_##pin, -1, offset }
-
-#define MFP_ADDR_END { MFP_PIN_INVALID, 0 }
-
-/*
- * pxa3xx_mfp_read()/pxa3xx_mfp_write() - for direct read/write access
- * to the MFPR register
- */
-unsigned long pxa3xx_mfp_read(int mfp);
-void pxa3xx_mfp_write(int mfp, unsigned long mfpr_val);
-
-/*
- * pxa3xx_mfp_config - configure the MFPR registers
- *
- * used by board specific initialization code
- */
-void pxa3xx_mfp_config(unsigned long *mfp_cfgs, int num);
-
-/*
- * pxa3xx_mfp_init_addr() - initialize the mapping between mfp pin
- * index and MFPR register offset
- *
- * used by processor specific code
+/* NOTE: usage of these two functions is not recommended,
+ * use pxa3xx_mfp_config() instead.
*/
-void __init pxa3xx_mfp_init_addr(struct pxa3xx_mfp_addr_map *);
-void __init pxa3xx_init_mfp(void);
+static inline unsigned long pxa3xx_mfp_read(int mfp)
+{
+ return mfp_read(mfp);
+}
+
+static inline void pxa3xx_mfp_write(int mfp, unsigned long val)
+{
+ mfp_write(mfp, val);
+}
+
+static inline void pxa3xx_mfp_config(unsigned long *mfp_cfg, int num)
+{
+ mfp_config(mfp_cfg, num);
+}
#endif /* __ASM_ARCH_MFP_PXA3XX_H */
diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa930.h b/arch/arm/mach-pxa/include/mach/mfp-pxa930.h
index fa73f56..0d119d3 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa930.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa930.h
@@ -13,7 +13,6 @@
#ifndef __ASM_ARCH_MFP_PXA9xx_H
#define __ASM_ARCH_MFP_PXA9xx_H

-#include <mach/mfp.h>
#include <mach/mfp-pxa3xx.h>

/* GPIO */
diff --git a/arch/arm/mach-pxa/mfp-pxa3xx.c b/arch/arm/mach-pxa/mfp-pxa3xx.c
index eb197a6..7a270ee 100644
--- a/arch/arm/mach-pxa/mfp-pxa3xx.c
+++ b/arch/arm/mach-pxa/mfp-pxa3xx.c
@@ -20,183 +20,9 @@
#include <linux/sysdev.h>

#include <mach/hardware.h>
-#include <mach/mfp.h>
#include <mach/mfp-pxa3xx.h>
#include <mach/pxa3xx-regs.h>

-/* mfp_spin_lock is used to ensure that MFP register configuration
- * (most likely a read-modify-write operation) is atomic, and that
- * mfp_table[] is consistent
- */
-static DEFINE_SPINLOCK(mfp_spin_lock);
-
-static void __iomem *mfpr_mmio_base = (void __iomem *)&__REG(MFPR_BASE);
-
-struct pxa3xx_mfp_pin {
- unsigned long config; /* -1 for not configured */
- unsigned long mfpr_off; /* MFPRxx Register offset */
- unsigned long mfpr_run; /* Run-Mode Register Value */
- unsigned long mfpr_lpm; /* Low Power Mode Register Value */
-};
-
-static struct pxa3xx_mfp_pin mfp_table[MFP_PIN_MAX];
-
-/* mapping of MFP_LPM_* definitions to MFPR_LPM_* register bits */
-static const unsigned long mfpr_lpm[] = {
- MFPR_LPM_INPUT,
- MFPR_LPM_DRIVE_LOW,
- MFPR_LPM_DRIVE_HIGH,
- MFPR_LPM_PULL_LOW,
- MFPR_LPM_PULL_HIGH,
- MFPR_LPM_FLOAT,
-};
-
-/* mapping of MFP_PULL_* definitions to MFPR_PULL_* register bits */
-static const unsigned long mfpr_pull[] = {
- MFPR_PULL_NONE,
- MFPR_PULL_LOW,
- MFPR_PULL_HIGH,
- MFPR_PULL_BOTH,
-};
-
-/* mapping of MFP_LPM_EDGE_* definitions to MFPR_EDGE_* register bits */
-static const unsigned long mfpr_edge[] = {
- MFPR_EDGE_NONE,
- MFPR_EDGE_RISE,
- MFPR_EDGE_FALL,
- MFPR_EDGE_BOTH,
-};
-
-#define mfpr_readl(off) \
- __raw_readl(mfpr_mmio_base + (off))
-
-#define mfpr_writel(off, val) \
- __raw_writel(val, mfpr_mmio_base + (off))
-
-#define mfp_configured(p) ((p)->config != -1)
-
-/*
- * perform a read-back of any MFPR register to make sure the
- * previous writings are finished
- */
-#define mfpr_sync() (void)__raw_readl(mfpr_mmio_base + 0)
-
-static inline void __mfp_config_run(struct pxa3xx_mfp_pin *p)
-{
- if (mfp_configured(p))
- mfpr_writel(p->mfpr_off, p->mfpr_run);
-}
-
-static inline void __mfp_config_lpm(struct pxa3xx_mfp_pin *p)
-{
- if (mfp_configured(p)) {
- unsigned long mfpr_clr = (p->mfpr_run & ~MFPR_EDGE_BOTH) | MFPR_EDGE_CLEAR;
- if (mfpr_clr != p->mfpr_run)
- mfpr_writel(p->mfpr_off, mfpr_clr);
- if (p->mfpr_lpm != mfpr_clr)
- mfpr_writel(p->mfpr_off, p->mfpr_lpm);
- }
-}
-
-void pxa3xx_mfp_config(unsigned long *mfp_cfgs, int num)
-{
- unsigned long flags;
- int i;
-
- spin_lock_irqsave(&mfp_spin_lock, flags);
-
- for (i = 0; i < num; i++, mfp_cfgs++) {
- unsigned long tmp, c = *mfp_cfgs;
- struct pxa3xx_mfp_pin *p;
- int pin, af, drv, lpm, edge, pull;
-
- pin = MFP_PIN(c);
- BUG_ON(pin >= MFP_PIN_MAX);
- p = &mfp_table[pin];
-
- af = MFP_AF(c);
- drv = MFP_DS(c);
- lpm = MFP_LPM_STATE(c);
- edge = MFP_LPM_EDGE(c);
- pull = MFP_PULL(c);
-
- /* run-mode pull settings will conflict with MFPR bits of
- * low power mode state, calculate mfpr_run and mfpr_lpm
- * individually if pull != MFP_PULL_NONE
- */
- tmp = MFPR_AF_SEL(af) | MFPR_DRIVE(drv);
-
- if (likely(pull == MFP_PULL_NONE)) {
- p->mfpr_run = tmp | mfpr_lpm[lpm] | mfpr_edge[edge];
- p->mfpr_lpm = p->mfpr_run;
- } else {
- p->mfpr_lpm = tmp | mfpr_lpm[lpm] | mfpr_edge[edge];
- p->mfpr_run = tmp | mfpr_pull[pull];
- }
-
- p->config = c; __mfp_config_run(p);
- }
-
- mfpr_sync();
- spin_unlock_irqrestore(&mfp_spin_lock, flags);
-}
-
-unsigned long pxa3xx_mfp_read(int mfp)
-{
- unsigned long val, flags;
-
- BUG_ON(mfp >= MFP_PIN_MAX);
-
- spin_lock_irqsave(&mfp_spin_lock, flags);
- val = mfpr_readl(mfp_table[mfp].mfpr_off);
- spin_unlock_irqrestore(&mfp_spin_lock, flags);
-
- return val;
-}
-
-void pxa3xx_mfp_write(int mfp, unsigned long val)
-{
- unsigned long flags;
-
- BUG_ON(mfp >= MFP_PIN_MAX);
-
- spin_lock_irqsave(&mfp_spin_lock, flags);
- mfpr_writel(mfp_table[mfp].mfpr_off, val);
- mfpr_sync();
- spin_unlock_irqrestore(&mfp_spin_lock, flags);
-}
-
-void __init pxa3xx_mfp_init_addr(struct pxa3xx_mfp_addr_map *map)
-{
- struct pxa3xx_mfp_addr_map *p;
- unsigned long offset, flags;
- int i;
-
- spin_lock_irqsave(&mfp_spin_lock, flags);
-
- for (p = map; p->start != MFP_PIN_INVALID; p++) {
- offset = p->offset;
- i = p->start;
-
- do {
- mfp_table[i].mfpr_off = offset;
- mfp_table[i].mfpr_run = 0;
- mfp_table[i].mfpr_lpm = 0;
- offset += 4; i++;
- } while ((i <= p->end) && (p->end != -1));
- }
-
- spin_unlock_irqrestore(&mfp_spin_lock, flags);
-}
-
-void __init pxa3xx_init_mfp(void)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(mfp_table); i++)
- mfp_table[i].config = -1;
-}
-
#ifdef CONFIG_PM
/*
* Configure the MFPs appropriately for suspend/resume.
@@ -207,23 +33,13 @@ void __init pxa3xx_init_mfp(void)
*/
static int pxa3xx_mfp_suspend(struct sys_device *d, pm_message_t state)
{
- int pin;
-
- for (pin = 0; pin < ARRAY_SIZE(mfp_table); pin++) {
- struct pxa3xx_mfp_pin *p = &mfp_table[pin];
- __mfp_config_lpm(p);
- }
+ mfp_config_lpm();
return 0;
}

static int pxa3xx_mfp_resume(struct sys_device *d)
{
- int pin;
-
- for (pin = 0; pin < ARRAY_SIZE(mfp_table); pin++) {
- struct pxa3xx_mfp_pin *p = &mfp_table[pin];
- __mfp_config_run(p);
- }
+ mfp_config_run();

/* clear RDH bit when MFP settings are restored
*
@@ -231,7 +47,6 @@ static int pxa3xx_mfp_resume(struct sys_device *d)
* preserve them here in case they will be referenced later
*/
ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
-
return 0;
}
#else
diff --git a/arch/arm/mach-pxa/pxa300.c b/arch/arm/mach-pxa/pxa300.c
index 37bb12d..4ba6d21 100644
--- a/arch/arm/mach-pxa/pxa300.c
+++ b/arch/arm/mach-pxa/pxa300.c
@@ -23,7 +23,7 @@
#include "devices.h"
#include "clock.h"

-static struct pxa3xx_mfp_addr_map pxa300_mfp_addr_map[] __initdata = {
+static struct mfp_addr_map pxa300_mfp_addr_map[] __initdata = {

MFP_ADDR_X(GPIO0, GPIO2, 0x00b4),
MFP_ADDR_X(GPIO3, GPIO26, 0x027c),
@@ -72,7 +72,7 @@ static struct pxa3xx_mfp_addr_map pxa300_mfp_addr_map[] __initdata = {
};

/* override pxa300 MFP register addresses */
-static struct pxa3xx_mfp_addr_map pxa310_mfp_addr_map[] __initdata = {
+static struct mfp_addr_map pxa310_mfp_addr_map[] __initdata = {
MFP_ADDR_X(GPIO30, GPIO98, 0x0418),
MFP_ADDR_X(GPIO7_2, GPIO12_2, 0x052C),

@@ -98,13 +98,13 @@ static struct clk_lookup pxa310_clkregs[] = {
static int __init pxa300_init(void)
{
if (cpu_is_pxa300() || cpu_is_pxa310()) {
- pxa3xx_init_mfp();
- pxa3xx_mfp_init_addr(pxa300_mfp_addr_map);
+ mfp_init_base(io_p2v(MFPR_BASE));
+ mfp_init_addr(pxa300_mfp_addr_map);
clks_register(ARRAY_AND_SIZE(common_clkregs));
}

if (cpu_is_pxa310()) {
- pxa3xx_mfp_init_addr(pxa310_mfp_addr_map);
+ mfp_init_addr(pxa310_mfp_addr_map);
clks_register(ARRAY_AND_SIZE(pxa310_clkregs));
}

diff --git a/arch/arm/mach-pxa/pxa320.c b/arch/arm/mach-pxa/pxa320.c
index e708f4e..8b3d97e 100644
--- a/arch/arm/mach-pxa/pxa320.c
+++ b/arch/arm/mach-pxa/pxa320.c
@@ -23,7 +23,7 @@
#include "devices.h"
#include "clock.h"

-static struct pxa3xx_mfp_addr_map pxa320_mfp_addr_map[] __initdata = {
+static struct mfp_addr_map pxa320_mfp_addr_map[] __initdata = {

MFP_ADDR_X(GPIO0, GPIO4, 0x0124),
MFP_ADDR_X(GPIO5, GPIO9, 0x028C),
@@ -86,8 +86,8 @@ static struct clk_lookup pxa320_clkregs[] = {
static int __init pxa320_init(void)
{
if (cpu_is_pxa320()) {
- pxa3xx_init_mfp();
- pxa3xx_mfp_init_addr(pxa320_mfp_addr_map);
+ mfp_init_base(io_p2v(MFPR_BASE));
+ mfp_init_addr(pxa320_mfp_addr_map);
clks_register(ARRAY_AND_SIZE(pxa320_clkregs));
}

diff --git a/arch/arm/mach-pxa/pxa930.c b/arch/arm/mach-pxa/pxa930.c
index f15dfa5..7113174 100644
--- a/arch/arm/mach-pxa/pxa930.c
+++ b/arch/arm/mach-pxa/pxa930.c
@@ -18,7 +18,7 @@

#include <mach/pxa930.h>

-static struct pxa3xx_mfp_addr_map pxa930_mfp_addr_map[] __initdata = {
+static struct mfp_addr_map pxa930_mfp_addr_map[] __initdata = {

MFP_ADDR(GPIO0, 0x02e0),
MFP_ADDR(GPIO1, 0x02dc),
@@ -179,8 +179,8 @@ static struct pxa3xx_mfp_addr_map pxa930_mfp_addr_map[] __initdata = {
static int __init pxa930_init(void)
{
if (cpu_is_pxa930()) {
- pxa3xx_init_mfp();
- pxa3xx_mfp_init_addr(pxa930_mfp_addr_map);
+ mfp_init_base(io_p2v(MFPR_BASE));
+ mfp_init_addr(pxa930_mfp_addr_map);
}

return 0;
diff --git a/arch/arm/plat-pxa/Makefile b/arch/arm/plat-pxa/Makefile
index b837df4..4be3723 100644
--- a/arch/arm/plat-pxa/Makefile
+++ b/arch/arm/plat-pxa/Makefile
@@ -2,6 +2,6 @@
# Makefile for code common across different PXA processor families
#

-obj-y := dma.o
+obj-y := dma.o mfp.o

obj-$(CONFIG_GENERIC_GPIO) += gpio.o
diff --git a/arch/arm/plat-pxa/include/plat/mfp.h b/arch/arm/plat-pxa/include/plat/mfp.h
new file mode 100644
index 0000000..a22229c
--- /dev/null
+++ b/arch/arm/plat-pxa/include/plat/mfp.h
@@ -0,0 +1,369 @@
+/*
+ * arch/arm/plat-pxa/include/plat/mfp.h
+ *
+ * Common Multi-Function Pin Definitions
+ *
+ * Copyright (C) 2007 Marvell International Ltd.
+ *
+ * 2007-8-21: eric miao <eric.miao@marvell.com>
+ * initial version
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_PLAT_MFP_H
+#define __ASM_PLAT_MFP_H
+
+#define mfp_to_gpio(m) ((m) % 128)
+
+/* list of all the configurable MFP pins */
+enum {
+ MFP_PIN_INVALID = -1,
+
+ MFP_PIN_GPIO0 = 0,
+ MFP_PIN_GPIO1,
+ MFP_PIN_GPIO2,
+ MFP_PIN_GPIO3,
+ MFP_PIN_GPIO4,
+ MFP_PIN_GPIO5,
+ MFP_PIN_GPIO6,
+ MFP_PIN_GPIO7,
+ MFP_PIN_GPIO8,
+ MFP_PIN_GPIO9,
+ MFP_PIN_GPIO10,
+ MFP_PIN_GPIO11,
+ MFP_PIN_GPIO12,
+ MFP_PIN_GPIO13,
+ MFP_PIN_GPIO14,
+ MFP_PIN_GPIO15,
+ MFP_PIN_GPIO16,
+ MFP_PIN_GPIO17,
+ MFP_PIN_GPIO18,
+ MFP_PIN_GPIO19,
+ MFP_PIN_GPIO20,
+ MFP_PIN_GPIO21,
+ MFP_PIN_GPIO22,
+ MFP_PIN_GPIO23,
+ MFP_PIN_GPIO24,
+ MFP_PIN_GPIO25,
+ MFP_PIN_GPIO26,
+ MFP_PIN_GPIO27,
+ MFP_PIN_GPIO28,
+ MFP_PIN_GPIO29,
+ MFP_PIN_GPIO30,
+ MFP_PIN_GPIO31,
+ MFP_PIN_GPIO32,
+ MFP_PIN_GPIO33,
+ MFP_PIN_GPIO34,
+ MFP_PIN_GPIO35,
+ MFP_PIN_GPIO36,
+ MFP_PIN_GPIO37,
+ MFP_PIN_GPIO38,
+ MFP_PIN_GPIO39,
+ MFP_PIN_GPIO40,
+ MFP_PIN_GPIO41,
+ MFP_PIN_GPIO42,
+ MFP_PIN_GPIO43,
+ MFP_PIN_GPIO44,
+ MFP_PIN_GPIO45,
+ MFP_PIN_GPIO46,
+ MFP_PIN_GPIO47,
+ MFP_PIN_GPIO48,
+ MFP_PIN_GPIO49,
+ MFP_PIN_GPIO50,
+ MFP_PIN_GPIO51,
+ MFP_PIN_GPIO52,
+ MFP_PIN_GPIO53,
+ MFP_PIN_GPIO54,
+ MFP_PIN_GPIO55,
+ MFP_PIN_GPIO56,
+ MFP_PIN_GPIO57,
+ MFP_PIN_GPIO58,
+ MFP_PIN_GPIO59,
+ MFP_PIN_GPIO60,
+ MFP_PIN_GPIO61,
+ MFP_PIN_GPIO62,
+ MFP_PIN_GPIO63,
+ MFP_PIN_GPIO64,
+ MFP_PIN_GPIO65,
+ MFP_PIN_GPIO66,
+ MFP_PIN_GPIO67,
+ MFP_PIN_GPIO68,
+ MFP_PIN_GPIO69,
+ MFP_PIN_GPIO70,
+ MFP_PIN_GPIO71,
+ MFP_PIN_GPIO72,
+ MFP_PIN_GPIO73,
+ MFP_PIN_GPIO74,
+ MFP_PIN_GPIO75,
+ MFP_PIN_GPIO76,
+ MFP_PIN_GPIO77,
+ MFP_PIN_GPIO78,
+ MFP_PIN_GPIO79,
+ MFP_PIN_GPIO80,
+ MFP_PIN_GPIO81,
+ MFP_PIN_GPIO82,
+ MFP_PIN_GPIO83,
+ MFP_PIN_GPIO84,
+ MFP_PIN_GPIO85,
+ MFP_PIN_GPIO86,
+ MFP_PIN_GPIO87,
+ MFP_PIN_GPIO88,
+ MFP_PIN_GPIO89,
+ MFP_PIN_GPIO90,
+ MFP_PIN_GPIO91,
+ MFP_PIN_GPIO92,
+ MFP_PIN_GPIO93,
+ MFP_PIN_GPIO94,
+ MFP_PIN_GPIO95,
+ MFP_PIN_GPIO96,
+ MFP_PIN_GPIO97,
+ MFP_PIN_GPIO98,
+ MFP_PIN_GPIO99,
+ MFP_PIN_GPIO100,
+ MFP_PIN_GPIO101,
+ MFP_PIN_GPIO102,
+ MFP_PIN_GPIO103,
+ MFP_PIN_GPIO104,
+ MFP_PIN_GPIO105,
+ MFP_PIN_GPIO106,
+ MFP_PIN_GPIO107,
+ MFP_PIN_GPIO108,
+ MFP_PIN_GPIO109,
+ MFP_PIN_GPIO110,
+ MFP_PIN_GPIO111,
+ MFP_PIN_GPIO112,
+ MFP_PIN_GPIO113,
+ MFP_PIN_GPIO114,
+ MFP_PIN_GPIO115,
+ MFP_PIN_GPIO116,
+ MFP_PIN_GPIO117,
+ MFP_PIN_GPIO118,
+ MFP_PIN_GPIO119,
+ MFP_PIN_GPIO120,
+ MFP_PIN_GPIO121,
+ MFP_PIN_GPIO122,
+ MFP_PIN_GPIO123,
+ MFP_PIN_GPIO124,
+ MFP_PIN_GPIO125,
+ MFP_PIN_GPIO126,
+ MFP_PIN_GPIO127,
+ MFP_PIN_GPIO0_2,
+ MFP_PIN_GPIO1_2,
+ MFP_PIN_GPIO2_2,
+ MFP_PIN_GPIO3_2,
+ MFP_PIN_GPIO4_2,
+ MFP_PIN_GPIO5_2,
+ MFP_PIN_GPIO6_2,
+ MFP_PIN_GPIO7_2,
+ MFP_PIN_GPIO8_2,
+ MFP_PIN_GPIO9_2,
+ MFP_PIN_GPIO10_2,
+ MFP_PIN_GPIO11_2,
+ MFP_PIN_GPIO12_2,
+ MFP_PIN_GPIO13_2,
+ MFP_PIN_GPIO14_2,
+ MFP_PIN_GPIO15_2,
+ MFP_PIN_GPIO16_2,
+ MFP_PIN_GPIO17_2,
+
+ MFP_PIN_ULPI_STP,
+ MFP_PIN_ULPI_NXT,
+ MFP_PIN_ULPI_DIR,
+
+ MFP_PIN_nXCVREN,
+ MFP_PIN_DF_CLE_nOE,
+ MFP_PIN_DF_nADV1_ALE,
+ MFP_PIN_DF_SCLK_E,
+ MFP_PIN_DF_SCLK_S,
+ MFP_PIN_nBE0,
+ MFP_PIN_nBE1,
+ MFP_PIN_DF_nADV2_ALE,
+ MFP_PIN_DF_INT_RnB,
+ MFP_PIN_DF_nCS0,
+ MFP_PIN_DF_nCS1,
+ MFP_PIN_nLUA,
+ MFP_PIN_nLLA,
+ MFP_PIN_DF_nWE,
+ MFP_PIN_DF_ALE_nWE,
+ MFP_PIN_DF_nRE_nOE,
+ MFP_PIN_DF_ADDR0,
+ MFP_PIN_DF_ADDR1,
+ MFP_PIN_DF_ADDR2,
+ MFP_PIN_DF_ADDR3,
+ MFP_PIN_DF_IO0,
+ MFP_PIN_DF_IO1,
+ MFP_PIN_DF_IO2,
+ MFP_PIN_DF_IO3,
+ MFP_PIN_DF_IO4,
+ MFP_PIN_DF_IO5,
+ MFP_PIN_DF_IO6,
+ MFP_PIN_DF_IO7,
+ MFP_PIN_DF_IO8,
+ MFP_PIN_DF_IO9,
+ MFP_PIN_DF_IO10,
+ MFP_PIN_DF_IO11,
+ MFP_PIN_DF_IO12,
+ MFP_PIN_DF_IO13,
+ MFP_PIN_DF_IO14,
+ MFP_PIN_DF_IO15,
+
+ /* additional pins on PXA930 */
+ MFP_PIN_GSIM_UIO,
+ MFP_PIN_GSIM_UCLK,
+ MFP_PIN_GSIM_UDET,
+ MFP_PIN_GSIM_nURST,
+ MFP_PIN_PMIC_INT,
+ MFP_PIN_RDY,
+
+ MFP_PIN_MAX,
+};
+
+/*
+ * a possible MFP configuration is represented by a 32-bit integer
+ *
+ * bit 0.. 9 - MFP Pin Number (1024 Pins Maximum)
+ * bit 10..12 - Alternate Function Selection
+ * bit 13..15 - Drive Strength
+ * bit 16..18 - Low Power Mode State
+ * bit 19..20 - Low Power Mode Edge Detection
+ * bit 21..22 - Run Mode Pull State
+ *
+ * to facilitate the definition, the following macros are provided
+ *
+ * MFP_CFG_DEFAULT - default MFP configuration value, with
+ * alternate function = 0,
+ * drive strength = fast 3mA (MFP_DS03X)
+ * low power mode = default
+ * edge detection = none
+ *
+ * MFP_CFG - default MFPR value with alternate function
+ * MFP_CFG_DRV - default MFPR value with alternate function and
+ * pin drive strength
+ * MFP_CFG_LPM - default MFPR value with alternate function and
+ * low power mode
+ * MFP_CFG_X - default MFPR value with alternate function,
+ * pin drive strength and low power mode
+ */
+
+typedef unsigned long mfp_cfg_t;
+
+#define MFP_PIN(x) ((x) & 0x3ff)
+
+#define MFP_AF0 (0x0 << 10)
+#define MFP_AF1 (0x1 << 10)
+#define MFP_AF2 (0x2 << 10)
+#define MFP_AF3 (0x3 << 10)
+#define MFP_AF4 (0x4 << 10)
+#define MFP_AF5 (0x5 << 10)
+#define MFP_AF6 (0x6 << 10)
+#define MFP_AF7 (0x7 << 10)
+#define MFP_AF_MASK (0x7 << 10)
+#define MFP_AF(x) (((x) >> 10) & 0x7)
+
+#define MFP_DS01X (0x0 << 13)
+#define MFP_DS02X (0x1 << 13)
+#define MFP_DS03X (0x2 << 13)
+#define MFP_DS04X (0x3 << 13)
+#define MFP_DS06X (0x4 << 13)
+#define MFP_DS08X (0x5 << 13)
+#define MFP_DS10X (0x6 << 13)
+#define MFP_DS13X (0x7 << 13)
+#define MFP_DS_MASK (0x7 << 13)
+#define MFP_DS(x) (((x) >> 13) & 0x7)
+
+#define MFP_LPM_DEFAULT (0x0 << 16)
+#define MFP_LPM_DRIVE_LOW (0x1 << 16)
+#define MFP_LPM_DRIVE_HIGH (0x2 << 16)
+#define MFP_LPM_PULL_LOW (0x3 << 16)
+#define MFP_LPM_PULL_HIGH (0x4 << 16)
+#define MFP_LPM_FLOAT (0x5 << 16)
+#define MFP_LPM_INPUT (0x6 << 16)
+#define MFP_LPM_STATE_MASK (0x7 << 16)
+#define MFP_LPM_STATE(x) (((x) >> 16) & 0x7)
+
+#define MFP_LPM_EDGE_NONE (0x0 << 19)
+#define MFP_LPM_EDGE_RISE (0x1 << 19)
+#define MFP_LPM_EDGE_FALL (0x2 << 19)
+#define MFP_LPM_EDGE_BOTH (0x3 << 19)
+#define MFP_LPM_EDGE_MASK (0x3 << 19)
+#define MFP_LPM_EDGE(x) (((x) >> 19) & 0x3)
+
+#define MFP_PULL_NONE (0x0 << 21)
+#define MFP_PULL_LOW (0x1 << 21)
+#define MFP_PULL_HIGH (0x2 << 21)
+#define MFP_PULL_BOTH (0x3 << 21)
+#define MFP_PULL_MASK (0x3 << 21)
+#define MFP_PULL(x) (((x) >> 21) & 0x3)
+
+#define MFP_CFG_DEFAULT (MFP_AF0 | MFP_DS03X | MFP_LPM_DEFAULT |\
+ MFP_LPM_EDGE_NONE | MFP_PULL_NONE)
+
+#define MFP_CFG(pin, af) \
+ ((MFP_CFG_DEFAULT & ~MFP_AF_MASK) |\
+ (MFP_PIN(MFP_PIN_##pin) | MFP_##af))
+
+#define MFP_CFG_DRV(pin, af, drv) \
+ ((MFP_CFG_DEFAULT & ~(MFP_AF_MASK | MFP_DS_MASK)) |\
+ (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_##drv))
+
+#define MFP_CFG_LPM(pin, af, lpm) \
+ ((MFP_CFG_DEFAULT & ~(MFP_AF_MASK | MFP_LPM_STATE_MASK)) |\
+ (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_LPM_##lpm))
+
+#define MFP_CFG_X(pin, af, drv, lpm) \
+ ((MFP_CFG_DEFAULT & ~(MFP_AF_MASK | MFP_DS_MASK | MFP_LPM_STATE_MASK)) |\
+ (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_##drv | MFP_LPM_##lpm))
+
+#if defined(CONFIG_PXA3xx) || defined(CONFIG_ARCH_MMP)
+/*
+ * each MFP pin will have a MFPR register, since the offset of the
+ * register varies between processors, the processor specific code
+ * should initialize the pin offsets by mfp_init()
+ *
+ * mfp_init_base() - accepts a virtual base for all MFPR registers and
+ * initialize the MFP table to a default state
+ *
+ * mfp_init_addr() - accepts a table of "mfp_addr_map" structure, which
+ * represents a range of MFP pins from "start" to "end", with the offset
+ * begining at "offset", to define a single pin, let "end" = -1.
+ *
+ * use
+ *
+ * MFP_ADDR_X() to define a range of pins
+ * MFP_ADDR() to define a single pin
+ * MFP_ADDR_END to signal the end of pin offset definitions
+ */
+struct mfp_addr_map {
+ unsigned int start;
+ unsigned int end;
+ unsigned long offset;
+};
+
+#define MFP_ADDR_X(start, end, offset) \
+ { MFP_PIN_##start, MFP_PIN_##end, offset }
+
+#define MFP_ADDR(pin, offset) \
+ { MFP_PIN_##pin, -1, offset }
+
+#define MFP_ADDR_END { MFP_PIN_INVALID, 0 }
+
+void __init mfp_init_base(unsigned long mfpr_base);
+void __init mfp_init_addr(struct mfp_addr_map *map);
+
+/*
+ * mfp_{read, write}() - for direct read/write access to the MFPR register
+ * mfp_config() - for configuring a group of MFPR registers
+ * mfp_config_lpm() - configuring all low power MFPR registers for suspend
+ * mfp_config_run() - configuring all run time MFPR registers after resume
+ */
+unsigned long mfp_read(int mfp);
+void mfp_write(int mfp, unsigned long mfpr_val);
+void mfp_config(unsigned long *mfp_cfgs, int num);
+void mfp_config_run(void);
+void mfp_config_lpm(void);
+#endif /* CONFIG_PXA3xx || CONFIG_ARCH_MMP */
+
+#endif /* __ASM_PLAT_MFP_H */
diff --git a/arch/arm/plat-pxa/mfp.c b/arch/arm/plat-pxa/mfp.c
new file mode 100644
index 0000000..e716c62
--- /dev/null
+++ b/arch/arm/plat-pxa/mfp.c
@@ -0,0 +1,278 @@
+/*
+ * linux/arch/arm/plat-pxa/mfp.c
+ *
+ * Multi-Function Pin Support
+ *
+ * Copyright (C) 2007 Marvell Internation Ltd.
+ *
+ * 2007-08-21: eric miao <eric.miao@marvell.com>
+ * initial version
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/sysdev.h>
+
+#include <plat/mfp.h>
+
+#define MFPR_SIZE (PAGE_SIZE)
+
+/* MFPR register bit definitions */
+#define MFPR_PULL_SEL (0x1 << 15)
+#define MFPR_PULLUP_EN (0x1 << 14)
+#define MFPR_PULLDOWN_EN (0x1 << 13)
+#define MFPR_SLEEP_SEL (0x1 << 9)
+#define MFPR_SLEEP_OE_N (0x1 << 7)
+#define MFPR_EDGE_CLEAR (0x1 << 6)
+#define MFPR_EDGE_FALL_EN (0x1 << 5)
+#define MFPR_EDGE_RISE_EN (0x1 << 4)
+
+#define MFPR_SLEEP_DATA(x) ((x) << 8)
+#define MFPR_DRIVE(x) (((x) & 0x7) << 10)
+#define MFPR_AF_SEL(x) (((x) & 0x7) << 0)
+
+#define MFPR_EDGE_NONE (0)
+#define MFPR_EDGE_RISE (MFPR_EDGE_RISE_EN)
+#define MFPR_EDGE_FALL (MFPR_EDGE_FALL_EN)
+#define MFPR_EDGE_BOTH (MFPR_EDGE_RISE | MFPR_EDGE_FALL)
+
+/*
+ * Table that determines the low power modes outputs, with actual settings
+ * used in parentheses for don't-care values. Except for the float output,
+ * the configured driven and pulled levels match, so if there is a need for
+ * non-LPM pulled output, the same configuration could probably be used.
+ *
+ * Output value sleep_oe_n sleep_data pullup_en pulldown_en pull_sel
+ * (bit 7) (bit 8) (bit 14) (bit 13) (bit 15)
+ *
+ * Input 0 X(0) X(0) X(0) 0
+ * Drive 0 0 0 0 X(1) 0
+ * Drive 1 0 1 X(1) 0 0
+ * Pull hi (1) 1 X(1) 1 0 0
+ * Pull lo (0) 1 X(0) 0 1 0
+ * Z (float) 1 X(0) 0 0 0
+ */
+#define MFPR_LPM_INPUT (0)
+#define MFPR_LPM_DRIVE_LOW (MFPR_SLEEP_DATA(0) | MFPR_PULLDOWN_EN)
+#define MFPR_LPM_DRIVE_HIGH (MFPR_SLEEP_DATA(1) | MFPR_PULLUP_EN)
+#define MFPR_LPM_PULL_LOW (MFPR_LPM_DRIVE_LOW | MFPR_SLEEP_OE_N)
+#define MFPR_LPM_PULL_HIGH (MFPR_LPM_DRIVE_HIGH | MFPR_SLEEP_OE_N)
+#define MFPR_LPM_FLOAT (MFPR_SLEEP_OE_N)
+#define MFPR_LPM_MASK (0xe080)
+
+/*
+ * The pullup and pulldown state of the MFP pin at run mode is by default
+ * determined by the selected alternate function. In case that some buggy
+ * devices need to override this default behavior, the definitions below
+ * indicates the setting of corresponding MFPR bits
+ *
+ * Definition pull_sel pullup_en pulldown_en
+ * MFPR_PULL_NONE 0 0 0
+ * MFPR_PULL_LOW 1 0 1
+ * MFPR_PULL_HIGH 1 1 0
+ * MFPR_PULL_BOTH 1 1 1
+ */
+#define MFPR_PULL_NONE (0)
+#define MFPR_PULL_LOW (MFPR_PULL_SEL | MFPR_PULLDOWN_EN)
+#define MFPR_PULL_BOTH (MFPR_PULL_LOW | MFPR_PULLUP_EN)
+#define MFPR_PULL_HIGH (MFPR_PULL_SEL | MFPR_PULLUP_EN)
+
+/* mfp_spin_lock is used to ensure that MFP register configuration
+ * (most likely a read-modify-write operation) is atomic, and that
+ * mfp_table[] is consistent
+ */
+static DEFINE_SPINLOCK(mfp_spin_lock);
+
+static void __iomem *mfpr_mmio_base;
+
+struct mfp_pin {
+ unsigned long config; /* -1 for not configured */
+ unsigned long mfpr_off; /* MFPRxx Register offset */
+ unsigned long mfpr_run; /* Run-Mode Register Value */
+ unsigned long mfpr_lpm; /* Low Power Mode Register Value */
+};
+
+static struct mfp_pin mfp_table[MFP_PIN_MAX];
+
+/* mapping of MFP_LPM_* definitions to MFPR_LPM_* register bits */
+static const unsigned long mfpr_lpm[] = {
+ MFPR_LPM_INPUT,
+ MFPR_LPM_DRIVE_LOW,
+ MFPR_LPM_DRIVE_HIGH,
+ MFPR_LPM_PULL_LOW,
+ MFPR_LPM_PULL_HIGH,
+ MFPR_LPM_FLOAT,
+};
+
+/* mapping of MFP_PULL_* definitions to MFPR_PULL_* register bits */
+static const unsigned long mfpr_pull[] = {
+ MFPR_PULL_NONE,
+ MFPR_PULL_LOW,
+ MFPR_PULL_HIGH,
+ MFPR_PULL_BOTH,
+};
+
+/* mapping of MFP_LPM_EDGE_* definitions to MFPR_EDGE_* register bits */
+static const unsigned long mfpr_edge[] = {
+ MFPR_EDGE_NONE,
+ MFPR_EDGE_RISE,
+ MFPR_EDGE_FALL,
+ MFPR_EDGE_BOTH,
+};
+
+#define mfpr_readl(off) \
+ __raw_readl(mfpr_mmio_base + (off))
+
+#define mfpr_writel(off, val) \
+ __raw_writel(val, mfpr_mmio_base + (off))
+
+#define mfp_configured(p) ((p)->config != -1)
+
+/*
+ * perform a read-back of any MFPR register to make sure the
+ * previous writings are finished
+ */
+#define mfpr_sync() (void)__raw_readl(mfpr_mmio_base + 0)
+
+static inline void __mfp_config_run(struct mfp_pin *p)
+{
+ if (mfp_configured(p))
+ mfpr_writel(p->mfpr_off, p->mfpr_run);
+}
+
+static inline void __mfp_config_lpm(struct mfp_pin *p)
+{
+ if (mfp_configured(p)) {
+ unsigned long mfpr_clr = (p->mfpr_run & ~MFPR_EDGE_BOTH) | MFPR_EDGE_CLEAR;
+ if (mfpr_clr != p->mfpr_run)
+ mfpr_writel(p->mfpr_off, mfpr_clr);
+ if (p->mfpr_lpm != mfpr_clr)
+ mfpr_writel(p->mfpr_off, p->mfpr_lpm);
+ }
+}
+
+void mfp_config(unsigned long *mfp_cfgs, int num)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&mfp_spin_lock, flags);
+
+ for (i = 0; i < num; i++, mfp_cfgs++) {
+ unsigned long tmp, c = *mfp_cfgs;
+ struct mfp_pin *p;
+ int pin, af, drv, lpm, edge, pull;
+
+ pin = MFP_PIN(c);
+ BUG_ON(pin >= MFP_PIN_MAX);
+ p = &mfp_table[pin];
+
+ af = MFP_AF(c);
+ drv = MFP_DS(c);
+ lpm = MFP_LPM_STATE(c);
+ edge = MFP_LPM_EDGE(c);
+ pull = MFP_PULL(c);
+
+ /* run-mode pull settings will conflict with MFPR bits of
+ * low power mode state, calculate mfpr_run and mfpr_lpm
+ * individually if pull != MFP_PULL_NONE
+ */
+ tmp = MFPR_AF_SEL(af) | MFPR_DRIVE(drv);
+
+ if (likely(pull == MFP_PULL_NONE)) {
+ p->mfpr_run = tmp | mfpr_lpm[lpm] | mfpr_edge[edge];
+ p->mfpr_lpm = p->mfpr_run;
+ } else {
+ p->mfpr_lpm = tmp | mfpr_lpm[lpm] | mfpr_edge[edge];
+ p->mfpr_run = tmp | mfpr_pull[pull];
+ }
+
+ p->config = c; __mfp_config_run(p);
+ }
+
+ mfpr_sync();
+ spin_unlock_irqrestore(&mfp_spin_lock, flags);
+}
+
+unsigned long mfp_read(int mfp)
+{
+ unsigned long val, flags;
+
+ BUG_ON(mfp >= MFP_PIN_MAX);
+
+ spin_lock_irqsave(&mfp_spin_lock, flags);
+ val = mfpr_readl(mfp_table[mfp].mfpr_off);
+ spin_unlock_irqrestore(&mfp_spin_lock, flags);
+
+ return val;
+}
+
+void mfp_write(int mfp, unsigned long val)
+{
+ unsigned long flags;
+
+ BUG_ON(mfp >= MFP_PIN_MAX);
+
+ spin_lock_irqsave(&mfp_spin_lock, flags);
+ mfpr_writel(mfp_table[mfp].mfpr_off, val);
+ mfpr_sync();
+ spin_unlock_irqrestore(&mfp_spin_lock, flags);
+}
+
+void __init mfp_init_base(unsigned long mfpr_base)
+{
+ int i;
+
+ /* initialize the table with default - unconfigured */
+ for (i = 0; i < ARRAY_SIZE(mfp_table); i++)
+ mfp_table[i].config = -1;
+
+ mfpr_mmio_base = (void __iomem *)mfpr_base;
+}
+
+void __init mfp_init_addr(struct mfp_addr_map *map)
+{
+ struct mfp_addr_map *p;
+ unsigned long offset, flags;
+ int i;
+
+ spin_lock_irqsave(&mfp_spin_lock, flags);
+
+ for (p = map; p->start != MFP_PIN_INVALID; p++) {
+ offset = p->offset;
+ i = p->start;
+
+ do {
+ mfp_table[i].mfpr_off = offset;
+ mfp_table[i].mfpr_run = 0;
+ mfp_table[i].mfpr_lpm = 0;
+ offset += 4; i++;
+ } while ((i <= p->end) && (p->end != -1));
+ }
+
+ spin_unlock_irqrestore(&mfp_spin_lock, flags);
+}
+
+void mfp_config_lpm(void)
+{
+ struct mfp_pin *p = &mfp_table[0];
+ int pin;
+
+ for (pin = 0; pin < ARRAY_SIZE(mfp_table); pin++, p++)
+ __mfp_config_lpm(p);
+}
+
+void mfp_config_run(void)
+{
+ struct mfp_pin *p = &mfp_table[0];
+ int pin;
+
+ for (pin = 0; pin < ARRAY_SIZE(mfp_table); pin++, p++)
+ __mfp_config_run(p);
+}
--
1.6.0.4


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