diff mbox series

[v3,2/9] spi: pxa2xx: Provide num-cs for Sharp PDAs via device properties

Message ID 20240417110334.2671228-3-andriy.shevchenko@linux.intel.com
State Accepted
Commit 11346db50616698b04da44a62d4fac17d9227a62
Headers show
Series spi: pxa2xx: Drop linux/spi/pxa2xx_spi.h | expand

Commit Message

Andy Shevchenko April 17, 2024, 10:54 a.m. UTC
Since driver can parse num-cs device property, replace platform data
with this new approach. This pursues the following objectives:

- getting rid of the public header that barely used outside of
  the SPI subsystem (more specifically the SPI PXA2xx drivers)

- making a trampoline for the driver to support non-default number
  of the chip select pins in case the original code is going to be
  converted to Device Tree model

It's not expected to have more users in board files except this one.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 arch/arm/mach-pxa/spitz.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

Comments

Linus Walleij May 2, 2024, 8:07 a.m. UTC | #1
On Wed, Apr 17, 2024 at 1:04 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:

> Since driver can parse num-cs device property, replace platform data
> with this new approach. This pursues the following objectives:
>
> - getting rid of the public header that barely used outside of
>   the SPI subsystem (more specifically the SPI PXA2xx drivers)
>
> - making a trampoline for the driver to support non-default number
>   of the chip select pins in case the original code is going to be
>   converted to Device Tree model
>
> It's not expected to have more users in board files except this one.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij
diff mbox series

Patch

diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 318402ad685e..3c5f5a3cb480 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -18,10 +18,10 @@ 
 #include <linux/i2c.h>
 #include <linux/platform_data/i2c-pxa.h>
 #include <linux/platform_data/pca953x.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/corgi_lcd.h>
-#include <linux/spi/pxa2xx_spi.h>
 #include <linux/mtd/sharpsl.h>
 #include <linux/mtd/physmap.h>
 #include <linux/input-event-codes.h>
@@ -569,10 +569,6 @@  static struct spi_board_info spitz_spi_devices[] = {
 	},
 };
 
-static struct pxa2xx_spi_controller spitz_spi_info = {
-	.num_chipselect	= 3,
-};
-
 static struct gpiod_lookup_table spitz_spi_gpio_table = {
 	.dev_id = "spi2",
 	.table = {
@@ -583,10 +579,20 @@  static struct gpiod_lookup_table spitz_spi_gpio_table = {
 	},
 };
 
+static const struct property_entry spitz_spi_properties[] = {
+	PROPERTY_ENTRY_U32("num-cs", 3),
+	{ }
+};
+
+static const struct software_node spitz_spi_node = {
+	.properties = spitz_spi_properties,
+};
+
 static void __init spitz_spi_init(void)
 {
 	struct platform_device *pd;
 	int id = 2;
+	int err;
 
 	if (machine_is_akita())
 		gpiod_add_lookup_table(&akita_lcdcon_gpio_table);
@@ -601,8 +607,13 @@  static void __init spitz_spi_init(void)
 	if (pd == NULL) {
 		pr_err("pxa2xx-spi: failed to allocate device id %d\n", id);
 	} else {
-		pd->dev.platform_data = &spitz_spi_info;
-		platform_device_add(pd);
+		err = device_add_software_node(&pd->dev, &spitz_spi_node);
+		if (err) {
+			platform_device_put(pd);
+			pr_err("pxa2xx-spi: failed to add software node\n");
+		} else {
+			platform_device_add(pd);
+		}
 	}
 
 	spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices));