From: Alexander Stein Date: Mon, 17 Nov 2014 08:38:10 +0000 (+0100) Subject: gpio: mcp23s08: Add simple IRQ support for SPI devices X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a231b88cfc3df120d3882c0be9499970af87f305;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: Linus Walleij --- 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);