diff options
| author | Xu Yilun <yilun.xu@intel.com> | 2020-06-11 11:25:08 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-06-15 23:36:03 +0100 |
| commit | 1fccd182a4694a848f2d6f3b1820d6fc71d9c99d (patch) | |
| tree | f2aec1a3fadc6995e449c25cb4267fb3577bad41 | |
| parent | 8e04187c1bc7953f6dfad3400c58b1b0b0ad767b (diff) | |
| download | linux-1fccd182a4694a848f2d6f3b1820d6fc71d9c99d.tar.bz2 | |
spi: altera: add platform data for slave information.
This patch introduces platform data for slave information, it allows
spi-altera to add new spi devices once master registration is done.
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/1591845911-10197-4-git-send-email-yilun.xu@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | drivers/spi/spi-altera.c | 11 | ||||
| -rw-r--r-- | include/linux/spi/altera.h | 5 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c index e6e6708c7c47..aa9d1a257433 100644 --- a/drivers/spi/spi-altera.c +++ b/drivers/spi/spi-altera.c @@ -189,6 +189,7 @@ static int altera_spi_probe(struct platform_device *pdev) struct altera_spi *hw; struct spi_master *master; int err = -ENODEV; + u16 i; master = spi_alloc_master(&pdev->dev, sizeof(struct altera_spi)); if (!master) @@ -244,6 +245,16 @@ static int altera_spi_probe(struct platform_device *pdev) err = devm_spi_register_master(&pdev->dev, master); if (err) goto exit; + + if (pdata) { + for (i = 0; i < pdata->num_devices; i++) { + if (!spi_new_device(master, pdata->devices + i)) + dev_warn(&pdev->dev, + "unable to create SPI device: %s\n", + pdata->devices[i].modalias); + } + } + dev_info(&pdev->dev, "base %p, irq %d\n", hw->base, hw->irq); return 0; diff --git a/include/linux/spi/altera.h b/include/linux/spi/altera.h index 344a3fce56a4..2d42641499a6 100644 --- a/include/linux/spi/altera.h +++ b/include/linux/spi/altera.h @@ -14,11 +14,16 @@ * @mode_bits: Mode bits of SPI master. * @num_chipselect: Number of chipselects. * @bits_per_word_mask: bitmask of supported bits_per_word for transfers. + * @num_devices: Number of devices that shall be added when the driver + * is probed. + * @devices: The devices to add. */ struct altera_spi_platform_data { u16 mode_bits; u16 num_chipselect; u32 bits_per_word_mask; + u16 num_devices; + struct spi_board_info *devices; }; #endif /* __LINUX_SPI_ALTERA_H */ |