diff options
Diffstat (limited to 'target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/cs.c')
-rw-r--r-- | target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/cs.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/cs.c b/target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/cs.c deleted file mode 100644 index 50d8190..0000000 --- a/target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/cs.c +++ /dev/null @@ -1,144 +0,0 @@ -/* - * 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@freebox.fr> - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/log2.h> -#include <bcm63xx_cpu.h> -#include <bcm63xx_io.h> -#include <bcm63xx_regs.h> -#include <bcm63xx_cs.h> - -static DEFINE_SPINLOCK(bcm63xx_cs_lock); - -/* - * check if given chip select exists - */ -static int is_valid_cs(unsigned int cs) -{ - if (cs > 6) - return 0; - return 1; -} - -/* - * Configure chipselect base address and size (bytes). - * Size must be a power of two between 8k and 256M. - */ -int bcm63xx_set_cs_base(unsigned int cs, u32 base, unsigned int size) -{ - unsigned long flags; - u32 val; - - if (!is_valid_cs(cs)) - return -EINVAL; - - /* sanity check on size */ - if (size != roundup_pow_of_two(size)) - return -EINVAL; - - if (size < 8 * 1024 || size > 256 * 1024 * 1024) - return -EINVAL; - - val = (base & MPI_CSBASE_BASE_MASK); - /* 8k => 0 - 256M => 15 */ - val |= (ilog2(size) - ilog2(8 * 1024)) << MPI_CSBASE_SIZE_SHIFT; - - spin_lock_irqsave(&bcm63xx_cs_lock, flags); - bcm_mpi_writel(val, MPI_CSBASE_REG(cs)); - spin_unlock_irqrestore(&bcm63xx_cs_lock, flags); - - return 0; -} - -EXPORT_SYMBOL(bcm63xx_set_cs_base); - -/* - * configure chipselect timing (ns) - */ -int bcm63xx_set_cs_timing(unsigned int cs, unsigned int wait, - unsigned int setup, unsigned int hold) -{ - unsigned long flags; - u32 val; - - if (!is_valid_cs(cs)) - return -EINVAL; - - spin_lock_irqsave(&bcm63xx_cs_lock, flags); - val = bcm_mpi_readl(MPI_CSCTL_REG(cs)); - val &= ~(MPI_CSCTL_WAIT_MASK); - val &= ~(MPI_CSCTL_SETUP_MASK); - val &= ~(MPI_CSCTL_HOLD_MASK); - val |= wait << MPI_CSCTL_WAIT_SHIFT; - val |= setup << MPI_CSCTL_SETUP_SHIFT; - val |= hold << MPI_CSCTL_HOLD_SHIFT; - bcm_mpi_writel(val, MPI_CSCTL_REG(cs)); - spin_unlock_irqrestore(&bcm63xx_cs_lock, flags); - - return 0; -} - -EXPORT_SYMBOL(bcm63xx_set_cs_timing); - -/* - * configure other chipselect parameter (data bus size, ...) - */ -int bcm63xx_set_cs_param(unsigned int cs, u32 params) -{ - unsigned long flags; - u32 val; - - if (!is_valid_cs(cs)) - return -EINVAL; - - /* none of this fields apply to pcmcia */ - if (cs == MPI_CS_PCMCIA_COMMON || - cs == MPI_CS_PCMCIA_ATTR || - cs == MPI_CS_PCMCIA_IO) - return -EINVAL; - - spin_lock_irqsave(&bcm63xx_cs_lock, flags); - val = bcm_mpi_readl(MPI_CSCTL_REG(cs)); - val &= ~(MPI_CSCTL_DATA16_MASK); - val &= ~(MPI_CSCTL_SYNCMODE_MASK); - val &= ~(MPI_CSCTL_TSIZE_MASK); - val &= ~(MPI_CSCTL_ENDIANSWAP_MASK); - val |= params; - bcm_mpi_writel(val, MPI_CSCTL_REG(cs)); - spin_unlock_irqrestore(&bcm63xx_cs_lock, flags); - - return 0; -} - -EXPORT_SYMBOL(bcm63xx_set_cs_param); - -/* - * set cs status (enable/disable) - */ -int bcm63xx_set_cs_status(unsigned int cs, int enable) -{ - unsigned long flags; - u32 val; - - if (!is_valid_cs(cs)) - return -EINVAL; - - spin_lock_irqsave(&bcm63xx_cs_lock, flags); - val = bcm_mpi_readl(MPI_CSCTL_REG(cs)); - if (enable) - val |= MPI_CSCTL_ENABLE_MASK; - else - val &= ~MPI_CSCTL_ENABLE_MASK; - bcm_mpi_writel(val, MPI_CSCTL_REG(cs)); - spin_unlock_irqrestore(&bcm63xx_cs_lock, flags); - return 0; -} - -EXPORT_SYMBOL(bcm63xx_set_cs_status); |