diff options
| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2014-11-17 09:38:10 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-11-27 15:01:20 +0100 |
| commit | a231b88cfc3df120d3882c0be9499970af87f305 (patch) | |
| tree | a3e8ae80f92cd3b52d59f451842db2db72322db0 /drivers/gpio/gpio-mcp23s08.c | |
| parent | gpio: mcp23s08: request a shared interrupt (diff) | |
| download | linux-a231b88cfc3df120d3882c0be9499970af87f305.tar.xz linux-a231b88cfc3df120d3882c0be9499970af87f305.zip | |
gpio: mcp23s08: Add simple IRQ support for SPI devices
Currently this implementation only supports one IRQ for (all) SPI devices
using the same chip select.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-mcp23s08.c')
| -rw-r--r-- | drivers/gpio/gpio-mcp23s08.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index 6589438dad57..0d58440eb8da 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -935,11 +935,14 @@ static int mcp23s08_probe(struct spi_device *spi) return -ENOMEM; spi_set_drvdata(spi, data); + spi->irq = irq_of_parse_and_map(spi->dev.of_node, 0); + for (addr = 0; addr < ARRAY_SIZE(pdata->chip); addr++) { if (!(spi_present_mask & (1 << addr))) continue; chips--; data->mcp[addr] = &data->chip[chips]; + data->mcp[addr]->irq = spi->irq; status = mcp23s08_probe_one(data->mcp[addr], &spi->dev, spi, 0x40 | (addr << 1), type, pdata, addr); @@ -980,6 +983,8 @@ static int mcp23s08_remove(struct spi_device *spi) if (!data->mcp[addr]) continue; + if (spi->irq && data->mcp[addr]->irq_controller) + mcp23s08_irq_teardown(data->mcp[addr]); gpiochip_remove(&data->mcp[addr]->chip); } kfree(data); |