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Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/sysdev/cpm_common.c')
-rw-r--r--ANDROID_3.4.5/arch/powerpc/sysdev/cpm_common.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/sysdev/cpm_common.c b/ANDROID_3.4.5/arch/powerpc/sysdev/cpm_common.c
deleted file mode 100644
index 4dd53419..00000000
--- a/ANDROID_3.4.5/arch/powerpc/sysdev/cpm_common.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- * Common CPM code
- *
- * Author: Scott Wood <scottwood@freescale.com>
- *
- * Copyright 2007-2008,2010 Freescale Semiconductor, Inc.
- *
- * Some parts derived from commproc.c/cpm2_common.c, which is:
- * Copyright (c) 1997 Dan error_act (dmalek@jlc.net)
- * Copyright (c) 1999-2001 Dan Malek <dan@embeddedalley.com>
- * Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com)
- * 2006 (c) MontaVista Software, Inc.
- * Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/of_device.h>
-#include <linux/spinlock.h>
-#include <linux/export.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-
-#include <asm/udbg.h>
-#include <asm/io.h>
-#include <asm/rheap.h>
-#include <asm/cpm.h>
-
-#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;
-
-static void udbg_putc_cpm(char c)
-{
- u8 __iomem *txbuf = (u8 __iomem __force *)in_be32(&cpm_udbg_txdesc[1]);
-
- if (c == '\n')
- udbg_putc_cpm('\r');
-
- while (in_be32(&cpm_udbg_txdesc[0]) & 0x80000000)
- ;
-
- out_8(txbuf, c);
- out_be32(&cpm_udbg_txdesc[0], 0xa0000001);
-}
-
-void __init udbg_init_cpm(void)
-{
- if (cpm_udbg_txdesc) {
-#ifdef CONFIG_CPM2
- setbat(1, 0xf0000000, 0xf0000000, 1024*1024, PAGE_KERNEL_NCG);
-#endif
- udbg_putc = udbg_putc_cpm;
- }
-}
-#endif
-
-static spinlock_t cpm_muram_lock;
-static rh_block_t cpm_boot_muram_rh_block[16];
-static rh_info_t cpm_muram_info;
-static u8 __iomem *muram_vbase;
-static phys_addr_t muram_pbase;
-
-/* Max address size we deal with */
-#define OF_MAX_ADDR_CELLS 4
-
-int cpm_muram_init(void)
-{
- struct device_node *np;
- struct resource r;
- u32 zero[OF_MAX_ADDR_CELLS] = {};
- resource_size_t max = 0;
- int i = 0;
- int ret = 0;
-
- if (muram_pbase)
- return 0;
-
- spin_lock_init(&cpm_muram_lock);
- /* initialize the info header */
- rh_init(&cpm_muram_info, 1,
- sizeof(cpm_boot_muram_rh_block) /
- sizeof(cpm_boot_muram_rh_block[0]),
- cpm_boot_muram_rh_block);
-
- np = of_find_compatible_node(NULL, NULL, "fsl,cpm-muram-data");
- if (!np) {
- /* try legacy bindings */
- np = of_find_node_by_name(NULL, "data-only");
- if (!np) {
- printk(KERN_ERR "Cannot find CPM muram data node");
- ret = -ENODEV;
- goto out;
- }
- }
-
- muram_pbase = of_translate_address(np, zero);
- if (muram_pbase == (phys_addr_t)OF_BAD_ADDR) {
- printk(KERN_ERR "Cannot translate zero through CPM muram node");
- ret = -ENODEV;
- goto out;
- }
-
- while (of_address_to_resource(np, i++, &r) == 0) {
- if (r.end > max)
- max = r.end;
-
- rh_attach_region(&cpm_muram_info, r.start - muram_pbase,
- resource_size(&r));
- }
-
- muram_vbase = ioremap(muram_pbase, max - muram_pbase + 1);
- if (!muram_vbase) {
- printk(KERN_ERR "Cannot map CPM muram");
- ret = -ENOMEM;
- }
-
-out:
- of_node_put(np);
- return ret;
-}
-
-/**
- * cpm_muram_alloc - allocate the requested size worth of multi-user ram
- * @size: number of bytes to allocate
- * @align: requested alignment, in bytes
- *
- * This function returns an offset into the muram area.
- * Use cpm_dpram_addr() to get the virtual address of the area.
- * Use cpm_muram_free() to free the allocation.
- */
-unsigned long cpm_muram_alloc(unsigned long size, unsigned long align)
-{
- unsigned long start;
- unsigned long flags;
-
- spin_lock_irqsave(&cpm_muram_lock, flags);
- cpm_muram_info.alignment = align;
- start = rh_alloc(&cpm_muram_info, size, "commproc");
- memset(cpm_muram_addr(start), 0, size);
- spin_unlock_irqrestore(&cpm_muram_lock, flags);
-
- return start;
-}
-EXPORT_SYMBOL(cpm_muram_alloc);
-
-/**
- * cpm_muram_free - free a chunk of multi-user ram
- * @offset: The beginning of the chunk as returned by cpm_muram_alloc().
- */
-int cpm_muram_free(unsigned long offset)
-{
- int ret;
- unsigned long flags;
-
- spin_lock_irqsave(&cpm_muram_lock, flags);
- ret = rh_free(&cpm_muram_info, offset);
- spin_unlock_irqrestore(&cpm_muram_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(cpm_muram_free);
-
-/**
- * cpm_muram_alloc_fixed - reserve a specific region of multi-user ram
- * @offset: the offset into the muram area to reserve
- * @size: the number of bytes to reserve
- *
- * This function returns "start" on success, -ENOMEM on failure.
- * Use cpm_dpram_addr() to get the virtual address of the area.
- * Use cpm_muram_free() to free the allocation.
- */
-unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size)
-{
- unsigned long start;
- unsigned long flags;
-
- spin_lock_irqsave(&cpm_muram_lock, flags);
- cpm_muram_info.alignment = 1;
- start = rh_alloc_fixed(&cpm_muram_info, offset, size, "commproc");
- spin_unlock_irqrestore(&cpm_muram_lock, flags);
-
- return start;
-}
-EXPORT_SYMBOL(cpm_muram_alloc_fixed);
-
-/**
- * cpm_muram_addr - turn a muram offset into a virtual address
- * @offset: muram offset to convert
- */
-void __iomem *cpm_muram_addr(unsigned long offset)
-{
- return muram_vbase + offset;
-}
-EXPORT_SYMBOL(cpm_muram_addr);
-
-unsigned long cpm_muram_offset(void __iomem *addr)
-{
- return addr - (void __iomem *)muram_vbase;
-}
-EXPORT_SYMBOL(cpm_muram_offset);
-
-/**
- * cpm_muram_dma - turn a muram virtual address into a DMA address
- * @offset: virtual address from cpm_muram_addr() to convert
- */
-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 of_mm_gpio_chip *mm_gc, u32 pin_mask,
- int value)
-{
- struct cpm2_gpio32_chip *cpm2_gc = to_cpm2_gpio32_chip(mm_gc);
- struct cpm2_ioports __iomem *iop = mm_gc->regs;
-
- if (value)
- cpm2_gc->cpdata |= pin_mask;
- else
- cpm2_gc->cpdata &= ~pin_mask;
-
- out_be32(&iop->dat, cpm2_gc->cpdata);
-}
-
-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);
- unsigned long flags;
- u32 pin_mask = 1 << (31 - gpio);
-
- spin_lock_irqsave(&cpm2_gc->lock, flags);
-
- __cpm2_gpio32_set(mm_gc, pin_mask, value);
-
- 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_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);
-
- setbits32(&iop->dir, pin_mask);
- __cpm2_gpio32_set(mm_gc, pin_mask, val);
-
- spin_unlock_irqrestore(&cpm2_gc->lock, flags);
-
- 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_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);
-
- clrbits32(&iop->dir, pin_mask);
-
- spin_unlock_irqrestore(&cpm2_gc->lock, flags);
-
- return 0;
-}
-
-int cpm2_gpiochip_add32(struct device_node *np)
-{
- struct cpm2_gpio32_chip *cpm2_gc;
- struct of_mm_gpio_chip *mm_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;
- gc = &mm_gc->gc;
-
- mm_gc->save_regs = cpm2_gpio32_save_regs;
- 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 */
generated by cgit (git 2.34.1) at 2025-01-25 20:44:03 +0000