mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
26dd3e4ff9
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. In the case of some code where it is modular, we can extend that to also include files that are building basic support functionality but not related to loading or registering the final module; such files also have no need whatsoever for module.h The advantage in removing such instances is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h might have been the implicit source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each instance for the presence of either and replace/add as needed. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. Build coverage of all the mips defconfigs revealed the module.h header was masking a couple of implicit include instances, so we add the appropriate headers there. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Daney <david.daney@cavium.com> Cc: John Crispin <john@phrozen.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Steven J. Hill" <steven.hill@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15131/ [james.hogan@imgtec.com: Preserve sort order where it already exists] Signed-off-by: James Hogan <james.hogan@imgtec.com>
146 lines
3.2 KiB
C
146 lines
3.2 KiB
C
/*
|
|
* 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/errno.h>
|
|
#include <linux/export.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);
|