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staging: gpib: make port I/O code conditional

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A few of the helper modules contain functions for both IORESOURCE_MEM
and IORESOURCE_IO type access, with the latter not being supported
on all architectures but also not used by all the drivers.

Add #ifdef checks around these to allow building the library code
and use it on MMIO-only configurations.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20241016111521.1143191-5-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann
2024-10-16 11:15:18 +00:00
committed by Greg Kroah-Hartman
parent e282c89bea
commit 78ecb03756
3 changed files with 24 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/gpib/common/gpib_os.c
View File

@@ -140,6 +140,7 @@ unsigned int readw_wrapper(void *address)
};
EXPORT_SYMBOL(readw_wrapper);
#ifdef CONFIG_HAS_IOPORT
void outb_wrapper(unsigned int value, void *address)
{
outb(value, (unsigned long)(address));
@@ -163,6 +164,7 @@ unsigned int inw_wrapper(void *address)
return inw((unsigned long)(address));
};
EXPORT_SYMBOL(inw_wrapper);
#endif
/* this is a function instead of a constant because of Suse
* defining HZ to be a function call to get_hz()

38
drivers/staging/gpib/nec7210/nec7210.c
View File

@@ -1031,6 +1031,7 @@ void nec7210_board_online(struct nec7210_priv *priv, const gpib_board_t *board)
}
EXPORT_SYMBOL(nec7210_board_online);
#ifdef CONFIG_HAS_IOPORT
/* wrappers for io */
uint8_t nec7210_ioport_read_byte(struct nec7210_priv *priv, unsigned int register_num)
{
@@ -1050,24 +1051,6 @@ void nec7210_ioport_write_byte(struct nec7210_priv *priv, uint8_t data, unsigned
}
EXPORT_SYMBOL(nec7210_ioport_write_byte);
uint8_t nec7210_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num)
{
return readb(priv->iobase + register_num * priv->offset);
}
EXPORT_SYMBOL(nec7210_iomem_read_byte);
void nec7210_iomem_write_byte(struct nec7210_priv *priv, uint8_t data, unsigned int register_num)
{
if (register_num == AUXMR)
/* locking makes absolutely sure noone accesses the
* AUXMR register faster than once per microsecond
*/
nec7210_locking_iomem_write_byte(priv, data, register_num);
else
writeb(data, priv->iobase + register_num * priv->offset);
}
EXPORT_SYMBOL(nec7210_iomem_write_byte);
/* locking variants of io wrappers, for chips that page-in registers */
uint8_t nec7210_locking_ioport_read_byte(struct nec7210_priv *priv, unsigned int register_num)
{
@@ -1093,6 +1076,25 @@ void nec7210_locking_ioport_write_byte(struct nec7210_priv *priv, uint8_t data,
spin_unlock_irqrestore(&priv->register_page_lock, flags);
}
EXPORT_SYMBOL(nec7210_locking_ioport_write_byte);
#endif
uint8_t nec7210_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num)
{
return readb(priv->iobase + register_num * priv->offset);
}
EXPORT_SYMBOL(nec7210_iomem_read_byte);
void nec7210_iomem_write_byte(struct nec7210_priv *priv, uint8_t data, unsigned int register_num)
{
if (register_num == AUXMR)
/* locking makes absolutely sure noone accesses the
* AUXMR register faster than once per microsecond
*/
nec7210_locking_iomem_write_byte(priv, data, register_num);
else
writeb(data, priv->iobase + register_num * priv->offset);
}
EXPORT_SYMBOL(nec7210_iomem_write_byte);
uint8_t nec7210_locking_iomem_read_byte(struct nec7210_priv *priv, unsigned int register_num)
{

2
drivers/staging/gpib/tms9914/tms9914.c
View File

@@ -862,6 +862,7 @@ void tms9914_online(gpib_board_t *board, struct tms9914_priv *priv)
}
EXPORT_SYMBOL_GPL(tms9914_online);
#ifdef CONFIG_HAS_IOPORT
// wrapper for inb
uint8_t tms9914_ioport_read_byte(struct tms9914_priv *priv, unsigned int register_num)
{
@@ -877,6 +878,7 @@ void tms9914_ioport_write_byte(struct tms9914_priv *priv, uint8_t data, unsigned
udelay(1);
}
EXPORT_SYMBOL_GPL(tms9914_ioport_write_byte);
#endif
// wrapper for readb
uint8_t tms9914_iomem_read_byte(struct tms9914_priv *priv, unsigned int register_num)