From: Xu Yilun <yilun.xu@intel.com>
To: broonie@kernel.org, linux-spi@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: trix@redhat.com, yilun.xu@intel.com, hao.wu@intel.com,
matthew.gerlach@linux.intel.com, russell.h.weight@intel.com
Subject: [PATCH 3/6] spi: altera: add platform data for slave information.
Date: Thu, 11 Jun 2020 11:25:08 +0800 [thread overview]
Message-ID: <1591845911-10197-4-git-send-email-yilun.xu@intel.com> (raw)
In-Reply-To: <1591845911-10197-1-git-send-email-yilun.xu@intel.com>
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>
---
drivers/spi/spi-altera.c | 11 +++++++++++
include/linux/spi/altera.h | 5 +++++
2 files changed, 16 insertions(+)
diff --git a/drivers/spi/spi-altera.c b/drivers/spi/spi-altera.c
index e6e6708..aa9d1a2 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 344a3fc..2d42641 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 */
--
2.7.4
next prev parent reply other threads:[~2020-06-11 3:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-11 3:25 [PATCH 0/6] Add more configuration and regmap support for spi-altera Xu Yilun
2020-06-11 3:25 ` [PATCH 1/6] spi: altera: add 32bit data width transfer support Xu Yilun
2020-06-11 3:25 ` [PATCH 2/6] spi: altera: add SPI core parameters support via platform data Xu Yilun
2020-06-11 3:25 ` Xu Yilun [this message]
2020-06-11 3:25 ` [PATCH 4/6] spi: altera: use regmap instead of direct mmio register access Xu Yilun
2020-06-11 11:02 ` Mark Brown
2020-06-12 4:43 ` Xu Yilun
2020-06-12 11:52 ` Mark Brown
2020-06-12 12:31 ` Xu Yilun
2020-06-11 3:25 ` [PATCH 5/6] spi: altera: move driver name string to header file Xu Yilun
2020-06-11 14:03 ` Mark Brown
2020-06-12 3:14 ` Xu Yilun
2020-06-11 3:25 ` [PATCH 6/6] spi: altera: fix size mismatch on 64 bit processors Xu Yilun
2020-06-11 11:04 ` Mark Brown
2020-06-12 3:39 ` Xu Yilun
2020-06-11 12:56 ` [PATCH 0/6] Add more configuration and regmap support for spi-altera Tom Rix
2020-06-15 23:41 ` Mark Brown
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