5 files changed, 417 insertions, 43 deletions

diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 16a0ed28eb0..a90054b56d5 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -25,7 +25,6 @@ obj-$(CONFIG_MV64X60)		+= $(mv64x60-y) mv64x60_pic.o mv64x60_dev.o \
 obj-$(CONFIG_RTC_DRV_CMOS)	+= rtc_cmos_setup.o
 obj-$(CONFIG_AXON_RAM)		+= axonram.o
 
-ifeq ($(CONFIG_PPC_MERGE),y)
 obj-$(CONFIG_PPC_INDIRECT_PCI)	+= indirect_pci.o
 obj-$(CONFIG_PPC_I8259)		+= i8259.o
 obj-$(CONFIG_IPIC)		+= ipic.o
@@ -36,7 +35,6 @@ obj-$(CONFIG_OF_RTC)		+= of_rtc.o
 ifeq ($(CONFIG_PCI),y)
 obj-$(CONFIG_4xx)		+= ppc4xx_pci.o
 endif
-endif
 
 # Temporary hack until we have migrated to asm-powerpc
 ifeq ($(ARCH),powerpc)
diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c
index 661df42830b..4a04823e842 100644
--- a/arch/powerpc/sysdev/cpm1.c
+++ b/arch/powerpc/sysdev/cpm1.c
@@ -30,6 +30,7 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/module.h>
+#include <linux/spinlock.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/8xx_immap.h>
@@ -42,6 +43,10 @@
 
 #include <asm/fs_pd.h>
 
+#ifdef CONFIG_8xx_GPIO
+#include <linux/of_gpio.h>
+#endif
+
 #define CPM_MAP_SIZE    (0x4000)
 
 cpm8xx_t __iomem *cpmp;  /* Pointer to comm processor space */
@@ -290,20 +295,24 @@ struct cpm_ioport16 {
 	__be16 res[3];
 };
 
-struct cpm_ioport32 {
-	__be32 dir, par, sor;
+struct cpm_ioport32b {
+	__be32 dir, par, odr, dat;
+};
+
+struct cpm_ioport32e {
+	__be32 dir, par, sor, odr, dat;
 };
 
 static void cpm1_set_pin32(int port, int pin, int flags)
 {
-	struct cpm_ioport32 __iomem *iop;
+	struct cpm_ioport32e __iomem *iop;
 	pin = 1 << (31 - pin);
 
 	if (port == CPM_PORTB)
-		iop = (struct cpm_ioport32 __iomem *)
+		iop = (struct cpm_ioport32e __iomem *)
 		      &mpc8xx_immr->im_cpm.cp_pbdir;
 	else
-		iop = (struct cpm_ioport32 __iomem *)
+		iop = (struct cpm_ioport32e __iomem *)
 		      &mpc8xx_immr->im_cpm.cp_pedir;
 
 	if (flags & CPM_PIN_OUTPUT)
@@ -498,3 +507,251 @@ int cpm1_clk_setup(enum cpm_clk_target target, int clock, int mode)
 
 	return 0;
 }
+
+/*
+ * GPIO LIB API implementation
+ */
+#ifdef CONFIG_8xx_GPIO
+
+struct cpm1_gpio16_chip {
+	struct of_mm_gpio_chip mm_gc;
+	spinlock_t lock;
+
+	/* shadowed data register to clear/set bits safely */
+	u16 cpdata;
+};
+
+static inline struct cpm1_gpio16_chip *
+to_cpm1_gpio16_chip(struct of_mm_gpio_chip *mm_gc)
+{
+	return container_of(mm_gc, struct cpm1_gpio16_chip, mm_gc);
+}
+
+static void cpm1_gpio16_save_regs(struct of_mm_gpio_chip *mm_gc)
+{
+	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
+
+	cpm1_gc->cpdata = in_be16(&iop->dat);
+}
+
+static int cpm1_gpio16_get(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
+	u16 pin_mask;
+
+	pin_mask = 1 << (15 - gpio);
+
+	return !!(in_be16(&iop->dat) & pin_mask);
+}
+
+static void cpm1_gpio16_set(struct gpio_chip *gc, unsigned int gpio, int value)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm1_gpio16_chip *cpm1_gc = to_cpm1_gpio16_chip(mm_gc);
+	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
+	unsigned long flags;
+	u16 pin_mask = 1 << (15 - gpio);
+
+	spin_lock_irqsave(&cpm1_gc->lock, flags);
+
+	if (value)
+		cpm1_gc->cpdata |= pin_mask;
+	else
+		cpm1_gc->cpdata &= ~pin_mask;
+
+	out_be16(&iop->dat, cpm1_gc->cpdata);
+
+	spin_unlock_irqrestore(&cpm1_gc->lock, flags);
+}
+
+static int cpm1_gpio16_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
+	u16 pin_mask;
+
+	pin_mask = 1 << (15 - gpio);
+
+	setbits16(&iop->dir, pin_mask);
+
+	cpm1_gpio16_set(gc, gpio, val);
+
+	return 0;
+}
+
+static int cpm1_gpio16_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm_ioport16 __iomem *iop = mm_gc->regs;
+	u16 pin_mask;
+
+	pin_mask = 1 << (15 - gpio);
+
+	clrbits16(&iop->dir, pin_mask);
+
+	return 0;
+}
+
+int cpm1_gpiochip_add16(struct device_node *np)
+{
+	struct cpm1_gpio16_chip *cpm1_gc;
+	struct of_mm_gpio_chip *mm_gc;
+	struct of_gpio_chip *of_gc;
+	struct gpio_chip *gc;
+
+	cpm1_gc = kzalloc(sizeof(*cpm1_gc), GFP_KERNEL);
+	if (!cpm1_gc)
+		return -ENOMEM;
+
+	spin_lock_init(&cpm1_gc->lock);
+
+	mm_gc = &cpm1_gc->mm_gc;
+	of_gc = &mm_gc->of_gc;
+	gc = &of_gc->gc;
+
+	mm_gc->save_regs = cpm1_gpio16_save_regs;
+	of_gc->gpio_cells = 2;
+	gc->ngpio = 16;
+	gc->direction_input = cpm1_gpio16_dir_in;
+	gc->direction_output = cpm1_gpio16_dir_out;
+	gc->get = cpm1_gpio16_get;
+	gc->set = cpm1_gpio16_set;
+
+	return of_mm_gpiochip_add(np, mm_gc);
+}
+
+struct cpm1_gpio32_chip {
+	struct of_mm_gpio_chip mm_gc;
+	spinlock_t lock;
+
+	/* shadowed data register to clear/set bits safely */
+	u32 cpdata;
+};
+
+static inline struct cpm1_gpio32_chip *
+to_cpm1_gpio32_chip(struct of_mm_gpio_chip *mm_gc)
+{
+	return container_of(mm_gc, struct cpm1_gpio32_chip, mm_gc);
+}
+
+static void cpm1_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc)
+{
+	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
+
+	cpm1_gc->cpdata = in_be32(&iop->dat);
+}
+
+static int cpm1_gpio32_get(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
+	u32 pin_mask;
+
+	pin_mask = 1 << (31 - gpio);
+
+	return !!(in_be32(&iop->dat) & pin_mask);
+}
+
+static void cpm1_gpio32_set(struct gpio_chip *gc, unsigned int gpio, int value)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm1_gpio32_chip *cpm1_gc = to_cpm1_gpio32_chip(mm_gc);
+	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
+	unsigned long flags;
+	u32 pin_mask = 1 << (31 - gpio);
+
+	spin_lock_irqsave(&cpm1_gc->lock, flags);
+
+	if (value)
+		cpm1_gc->cpdata |= pin_mask;
+	else
+		cpm1_gc->cpdata &= ~pin_mask;
+
+	out_be32(&iop->dat, cpm1_gc->cpdata);
+
+	spin_unlock_irqrestore(&cpm1_gc->lock, flags);
+}
+
+static int cpm1_gpio32_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
+	u32 pin_mask;
+
+	pin_mask = 1 << (31 - gpio);
+
+	setbits32(&iop->dir, pin_mask);
+
+	cpm1_gpio32_set(gc, gpio, val);
+
+	return 0;
+}
+
+static int cpm1_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm_ioport32b __iomem *iop = mm_gc->regs;
+	u32 pin_mask;
+
+	pin_mask = 1 << (31 - gpio);
+
+	clrbits32(&iop->dir, pin_mask);
+
+	return 0;
+}
+
+int cpm1_gpiochip_add32(struct device_node *np)
+{
+	struct cpm1_gpio32_chip *cpm1_gc;
+	struct of_mm_gpio_chip *mm_gc;
+	struct of_gpio_chip *of_gc;
+	struct gpio_chip *gc;
+
+	cpm1_gc = kzalloc(sizeof(*cpm1_gc), GFP_KERNEL);
+	if (!cpm1_gc)
+		return -ENOMEM;
+
+	spin_lock_init(&cpm1_gc->lock);
+
+	mm_gc = &cpm1_gc->mm_gc;
+	of_gc = &mm_gc->of_gc;
+	gc = &of_gc->gc;
+
+	mm_gc->save_regs = cpm1_gpio32_save_regs;
+	of_gc->gpio_cells = 2;
+	gc->ngpio = 32;
+	gc->direction_input = cpm1_gpio32_dir_in;
+	gc->direction_output = cpm1_gpio32_dir_out;
+	gc->get = cpm1_gpio32_get;
+	gc->set = cpm1_gpio32_set;
+
+	return of_mm_gpiochip_add(np, mm_gc);
+}
+
+static int cpm_init_par_io(void)
+{
+	struct device_node *np;
+
+	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-a")
+		cpm1_gpiochip_add16(np);
+
+	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-b")
+		cpm1_gpiochip_add32(np);
+
+	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-c")
+		cpm1_gpiochip_add16(np);
+
+	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-d")
+		cpm1_gpiochip_add16(np);
+
+	/* Port E uses CPM2 layout */
+	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-e")
+		cpm2_gpiochip_add32(np);
+	return 0;
+}
+arch_initcall(cpm_init_par_io);
+
+#endif /* CONFIG_8xx_GPIO */
diff --git a/arch/powerpc/sysdev/cpm2.c b/arch/powerpc/sysdev/cpm2.c
index 5a6c5dfc53e..f1c3395633b 100644
--- a/arch/powerpc/sysdev/cpm2.c
+++ b/arch/powerpc/sysdev/cpm2.c
@@ -115,16 +115,10 @@ EXPORT_SYMBOL(cpm_command);
  * Baud rate clocks are zero-based in the driver code (as that maps
  * to port numbers).  Documentation uses 1-based numbering.
  */
-#define BRG_INT_CLK	(get_brgfreq())
-#define BRG_UART_CLK	(BRG_INT_CLK/16)
-
-/* This function is used by UARTS, or anything else that uses a 16x
- * oversampled clock.
- */
-void
-cpm_setbrg(uint brg, uint rate)
+void __cpm2_setbrg(uint brg, uint rate, uint clk, int div16, int src)
 {
 	u32 __iomem *bp;
+	u32 val;
 
 	/* This is good enough to get SMCs running.....
 	*/
@@ -135,34 +129,14 @@ cpm_setbrg(uint brg, uint rate)
 		brg -= 4;
 	}
 	bp += brg;
-	out_be32(bp, (((BRG_UART_CLK / rate) - 1) << 1) | CPM_BRG_EN);
-
-	cpm2_unmap(bp);
-}
-
-/* This function is used to set high speed synchronous baud rate
- * clocks.
- */
-void
-cpm2_fastbrg(uint brg, uint rate, int div16)
-{
-	u32 __iomem *bp;
-	u32 val;
-
-	if (brg < 4) {
-		bp = cpm2_map_size(im_brgc1, 16);
-	} else {
-		bp = cpm2_map_size(im_brgc5, 16);
-		brg -= 4;
-	}
-	bp += brg;
-	val = ((BRG_INT_CLK / rate) << 1) | CPM_BRG_EN;
+	val = (((clk / rate) - 1) << 1) | CPM_BRG_EN | src;
 	if (div16)
 		val |= CPM_BRG_DIV16;
 
 	out_be32(bp, val);
 	cpm2_unmap(bp);
 }
+EXPORT_SYMBOL(__cpm2_setbrg);
 
 int cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode)
 {
@@ -377,3 +351,14 @@ void cpm2_set_pin(int port, int pin, int flags)
 	else
 		clrbits32(&iop[port].odr, pin);
 }
+
+static int cpm_init_par_io(void)
+{
+	struct device_node *np;
+
+	for_each_compatible_node(np, NULL, "fsl,cpm2-pario-bank")
+		cpm2_gpiochip_add32(np);
+	return 0;
+}
+arch_initcall(cpm_init_par_io);
+
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index e4b7296acb2..53da8a079f9 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -19,6 +19,8 @@
 
 #include <linux/init.h>
 #include <linux/of_device.h>
+#include <linux/spinlock.h>
+#include <linux/of.h>
 
 #include <asm/udbg.h>
 #include <asm/io.h>
@@ -28,6 +30,10 @@
 
 #include <mm/mmu_decl.h>
 
+#if defined(CONFIG_CPM2) || defined(CONFIG_8xx_GPIO)
+#include <linux/of_gpio.h>
+#endif
+
 #ifdef CONFIG_PPC_EARLY_DEBUG_CPM
 static u32 __iomem *cpm_udbg_txdesc =
 	(u32 __iomem __force *)CONFIG_PPC_EARLY_DEBUG_CPM_ADDR;
@@ -207,3 +213,120 @@ dma_addr_t cpm_muram_dma(void __iomem *addr)
 	return muram_pbase + ((u8 __iomem *)addr - muram_vbase);
 }
 EXPORT_SYMBOL(cpm_muram_dma);
+
+#if defined(CONFIG_CPM2) || defined(CONFIG_8xx_GPIO)
+
+struct cpm2_ioports {
+	u32 dir, par, sor, odr, dat;
+	u32 res[3];
+};
+
+struct cpm2_gpio32_chip {
+	struct of_mm_gpio_chip mm_gc;
+	spinlock_t lock;
+
+	/* shadowed data register to clear/set bits safely */
+	u32 cpdata;
+};
+
+static inline struct cpm2_gpio32_chip *
+to_cpm2_gpio32_chip(struct of_mm_gpio_chip *mm_gc)
+{
+	return container_of(mm_gc, struct cpm2_gpio32_chip, mm_gc);
+}
+
+static void cpm2_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc)
+{
+	struct cpm2_gpio32_chip *cpm2_gc = to_cpm2_gpio32_chip(mm_gc);
+	struct cpm2_ioports __iomem *iop = mm_gc->regs;
+
+	cpm2_gc->cpdata = in_be32(&iop->dat);
+}
+
+static int cpm2_gpio32_get(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm2_ioports __iomem *iop = mm_gc->regs;
+	u32 pin_mask;
+
+	pin_mask = 1 << (31 - gpio);
+
+	return !!(in_be32(&iop->dat) & pin_mask);
+}
+
+static void cpm2_gpio32_set(struct gpio_chip *gc, unsigned int gpio, int value)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm2_gpio32_chip *cpm2_gc = to_cpm2_gpio32_chip(mm_gc);
+	struct cpm2_ioports __iomem *iop = mm_gc->regs;
+	unsigned long flags;
+	u32 pin_mask = 1 << (31 - gpio);
+
+	spin_lock_irqsave(&cpm2_gc->lock, flags);
+
+	if (value)
+		cpm2_gc->cpdata |= pin_mask;
+	else
+		cpm2_gc->cpdata &= ~pin_mask;
+
+	out_be32(&iop->dat, cpm2_gc->cpdata);
+
+	spin_unlock_irqrestore(&cpm2_gc->lock, flags);
+}
+
+static int cpm2_gpio32_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm2_ioports __iomem *iop = mm_gc->regs;
+	u32 pin_mask;
+
+	pin_mask = 1 << (31 - gpio);
+
+	setbits32(&iop->dir, pin_mask);
+
+	cpm2_gpio32_set(gc, gpio, val);
+
+	return 0;
+}
+
+static int cpm2_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+	struct cpm2_ioports __iomem *iop = mm_gc->regs;
+	u32 pin_mask;
+
+	pin_mask = 1 << (31 - gpio);
+
+	clrbits32(&iop->dir, pin_mask);
+
+	return 0;
+}
+
+int cpm2_gpiochip_add32(struct device_node *np)
+{
+	struct cpm2_gpio32_chip *cpm2_gc;
+	struct of_mm_gpio_chip *mm_gc;
+	struct of_gpio_chip *of_gc;
+	struct gpio_chip *gc;
+
+	cpm2_gc = kzalloc(sizeof(*cpm2_gc), GFP_KERNEL);
+	if (!cpm2_gc)
+		return -ENOMEM;
+
+	spin_lock_init(&cpm2_gc->lock);
+
+	mm_gc = &cpm2_gc->mm_gc;
+	of_gc = &mm_gc->of_gc;
+	gc = &of_gc->gc;
+
+	mm_gc->save_regs = cpm2_gpio32_save_regs;
+	of_gc->gpio_cells = 2;
+	gc->ngpio = 32;
+	gc->direction_input = cpm2_gpio32_dir_in;
+	gc->direction_output = cpm2_gpio32_dir_out;
+	gc->get = cpm2_gpio32_get;
+	gc->set = cpm2_gpio32_set;
+
+	return of_mm_gpiochip_add(np, mm_gc);
+}
+#endif /* CONFIG_CPM2 || CONFIG_8xx_GPIO */
diff --git a/arch/powerpc/sysdev/rtc_cmos_setup.c b/arch/powerpc/sysdev/rtc_cmos_setup.c
index c09ddc0dbeb..c1879ebfd4f 100644
--- a/arch/powerpc/sysdev/rtc_cmos_setup.c
+++ b/arch/powerpc/sysdev/rtc_cmos_setup.c
@@ -21,6 +21,7 @@ static int  __init add_rtc(void)
 	struct device_node *np;
 	struct platform_device *pd;
 	struct resource res[2];
+	unsigned int num_res = 1;
 	int ret;
 
 	memset(&res, 0, sizeof(res));
@@ -41,14 +42,24 @@ static int  __init add_rtc(void)
 	if (res[0].start != RTC_PORT(0))
 		return -EINVAL;
 
-	/* Use a fixed interrupt value of 8 since on PPC if we are using this
-	 * its off an i8259 which we ensure has interrupt numbers 0..15. */
-	res[1].start = 8;
-	res[1].end = 8;
-	res[1].flags = IORESOURCE_IRQ;
+	np = of_find_compatible_node(NULL, NULL, "chrp,iic");
+	if (!np)
+		np = of_find_compatible_node(NULL, NULL, "pnpPNP,000");
+	if (np) {
+		of_node_put(np);
+		/*
+		 * Use a fixed interrupt value of 8 since on PPC if we are
+		 * using this its off an i8259 which we ensure has interrupt
+		 * numbers 0..15.
+		 */
+		res[1].start = 8;
+		res[1].end = 8;
+		res[1].flags = IORESOURCE_IRQ;
+		num_res++;
+	}
 
 	pd = platform_device_register_simple("rtc_cmos", -1,
-					     &res[0], 2);
+					     &res[0], num_res);
 
 	if (IS_ERR(pd))
 		return PTR_ERR(pd);