diff options
| author | Pavel Machek <pavel@denx.de> | 2014-05-06 15:57:02 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-05-19 09:38:22 +0200 |
| commit | ccbc5357db3098c57176945f677b0af37f5e87e6 (patch) | |
| tree | 9200ce6c25f8bb2ec94c42fe8d0b2260105f9913 /drivers/net/can/c_can/c_can_pci.c | |
| parent | e07e83ae600ea51b857e02132220eb7b7e52e928 (diff) | |
| download | linux-ccbc5357db3098c57176945f677b0af37f5e87e6.tar.bz2 | |
can: c_can: Add and make use of 32-bit accesses functions
Add helpers for 32-bit accesses and replace open-coded 32-bit access
with calls to helpers. Minimum changes are done to the pci case, as I
don't have access to that hardware.
Tested-by: Thor Thayer <tthayer@altera.com>
Signed-off-by: Thor Thayer <tthayer@altera.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/c_can/c_can_pci.c')
| -rw-r--r-- | drivers/net/can/c_can/c_can_pci.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/can/c_can/c_can_pci.c b/drivers/net/can/c_can/c_can_pci.c index b901a798f7e2..5d11e0e4225b 100644 --- a/drivers/net/can/c_can/c_can_pci.c +++ b/drivers/net/can/c_can/c_can_pci.c @@ -83,6 +83,23 @@ static void c_can_pci_write_reg_32bit(const struct c_can_priv *priv, iowrite32((u32)val, priv->base + 2 * priv->regs[index]); } +static u32 c_can_pci_read_reg32(const struct c_can_priv *priv, enum reg index) +{ + u32 val; + + val = priv->read_reg(priv, index); + val |= ((u32) priv->read_reg(priv, index + 1)) << 16; + + return val; +} + +static void c_can_pci_write_reg32(const struct c_can_priv *priv, enum reg index, + u32 val) +{ + priv->write_reg(priv, index + 1, val >> 16); + priv->write_reg(priv, index, val); +} + static void c_can_pci_reset_pch(const struct c_can_priv *priv, bool enable) { if (enable) { @@ -187,6 +204,8 @@ static int c_can_pci_probe(struct pci_dev *pdev, ret = -EINVAL; goto out_free_c_can; } + priv->read_reg32 = c_can_pci_read_reg32; + priv->write_reg32 = c_can_pci_write_reg32; priv->raminit = c_can_pci_data->init; |