From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: Daniel Mack <daniel@zonque.org>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Robert Jarzmik <robert.jarzmik@free.fr>,
Russell King <linux@armlinux.org.uk>
Subject: [PATCH v3 1/9] spi: pxa2xx: Allow number of chip select pins to be read from property
Date: Wed, 17 Apr 2024 13:54:28 +0300 [thread overview]
Message-ID: <20240417110334.2671228-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20240417110334.2671228-1-andriy.shevchenko@linux.intel.com>
In some cases the number of the chip select pins might come from
the device property. Allow driver to use it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/spi/spi-pxa2xx.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 2f60b2fde8d5..ab6fd55237cd 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1357,6 +1357,7 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
struct ssp_device *ssp = NULL;
const void *match;
bool is_lpss_priv;
+ u32 num_cs = 1;
int status;
is_lpss_priv = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpss_priv");
@@ -1395,8 +1396,11 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev)
pdata->dma_filter = pxa2xx_spi_idma_filter;
}
+ /* Read number of chip select pins, if provided */
+ device_property_read_u32(dev, "num-cs", &num_cs);
+
+ pdata->num_chipselect = num_cs;
pdata->is_target = device_property_read_bool(dev, "spi-slave");
- pdata->num_chipselect = 1;
pdata->enable_dma = true;
pdata->dma_burst_size = 1;
--
2.43.0.rc1.1336.g36b5255a03ac
next prev parent reply other threads:[~2024-04-17 11:03 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-17 10:54 [PATCH v3 0/9] spi: pxa2xx: Drop linux/spi/pxa2xx_spi.h Andy Shevchenko
2024-04-17 10:54 ` Andy Shevchenko [this message]
2024-05-02 8:06 ` [PATCH v3 1/9] spi: pxa2xx: Allow number of chip select pins to be read from property Linus Walleij
2024-04-17 10:54 ` [PATCH v3 2/9] spi: pxa2xx: Provide num-cs for Sharp PDAs via device properties Andy Shevchenko
2024-05-02 8:07 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 3/9] spi: pxa2xx: Move contents of linux/spi/pxa2xx_spi.h to a local one Andy Shevchenko
2024-05-02 8:09 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 4/9] spi: pxa2xx: Remove outdated documentation Andy Shevchenko
2024-05-02 8:09 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 5/9] spi: pxa2xx: Don't use "proxy" headers Andy Shevchenko
2024-05-02 8:10 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 6/9] spi: pxa2xx: Drop struct pxa2xx_spi_chip Andy Shevchenko
2024-05-02 8:10 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 7/9] spi: pxa2xx: Remove DMA parameters from struct chip_data Andy Shevchenko
2024-05-02 8:11 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 8/9] spi: pxa2xx: Remove timeout field " Andy Shevchenko
2024-05-02 8:11 ` Linus Walleij
2024-04-17 10:54 ` [PATCH v3 9/9] spi: pxa2xx: Don't provide struct chip_data for others Andy Shevchenko
2024-05-02 8:12 ` Linus Walleij
2024-04-25 11:40 ` [PATCH v3 0/9] spi: pxa2xx: Drop linux/spi/pxa2xx_spi.h Andy Shevchenko
2024-05-01 14:18 ` Mark Brown
2024-05-06 14:59 ` Mark Brown
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