diff mbox series

[v3,3/3] ARM: omap1: Fix up the Nokia 770 board device IRQs

Message ID 20230430-nokia770-regression-v3-3-a6d0a89ffa8b@linaro.org (mailing list archive)
State New, archived
Headers show
Series Fix up Nokia 770 regression | expand

Commit Message

Linus Walleij May 5, 2023, 11:16 a.m. UTC 
The platform devices on the Nokia 770 is using some
board-specific IRQs that get statically assigned to platform
devices in the boardfile.

This does not work with dynamic IRQ chip bases.

Utilize the NULL device to define some board-specific
GPIO lookups and use these to immediately look up the
same GPIOs, convert to IRQ numbers and pass as resources
to the devices. This is ugly but should work.

Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 arch/arm/mach-omap1/board-nokia770.c | 57 ++++++++++++++++++++++++++++--------
 1 file changed, 44 insertions(+), 13 deletions(-)

Comments

Andy Shevchenko May 8, 2023, 3:17 p.m. UTC | #1 
Fri, May 05, 2023 at 01:16:57PM +0200, Linus Walleij kirjoitti:
> The platform devices on the Nokia 770 is using some
> board-specific IRQs that get statically assigned to platform
> devices in the boardfile.
> 
> This does not work with dynamic IRQ chip bases.
> 
> Utilize the NULL device to define some board-specific
> GPIO lookups and use these to immediately look up the
> same GPIOs, convert to IRQ numbers and pass as resources
> to the devices. This is ugly but should work.

...

> +static struct gpiod_lookup_table nokia770_irq_gpio_table = {
> +	.dev_id = NULL,
> +	.table = {
> +		/* GPIO used by SPI device 1 */
> +		GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
> +			    GPIO_ACTIVE_HIGH),
> +		/* GPIO used for retu IRQ */
> +		GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
> +			    GPIO_ACTIVE_HIGH),
> +		/* GPIO used for tahvo IRQ */
> +		GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
> +			    GPIO_ACTIVE_HIGH),

Missing terminator.

> +	},
> +};
Linus Walleij May 8, 2023, 9:28 p.m. UTC | #2 
On Mon, May 8, 2023 at 5:17 PM <andy.shevchenko@gmail.com> wrote:

> > +             GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
> > +                         GPIO_ACTIVE_HIGH),
>
> Missing terminator.

Darn I missed this comment in v4, I have fixed it in my tree, I will see if
there are more comments for v4 before I resend.

Yours,
Linus Walleij
diff mbox series

Patch

diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index dc37ea30bbcf..27bd5522e1de 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -6,7 +6,7 @@ 
  */
 #include <linux/clkdev.h>
 #include <linux/irq.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/gpio/machine.h>
 #include <linux/gpio/property.h>
 #include <linux/kernel.h>
@@ -250,19 +250,25 @@  static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
 
 static void __init nokia770_cbus_init(void)
 {
-	const int retu_irq_gpio = 62;
-	const int tahvo_irq_gpio = 40;
-
-	if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ"))
-		return;
-	if (gpio_request_one(tahvo_irq_gpio, GPIOF_IN, "Tahvo IRQ")) {
-		gpio_free(retu_irq_gpio);
-		return;
+	struct gpio_desc *d;
+	int irq;
+
+	d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
+	if (IS_ERR(d)) {
+		pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
+	} else {
+		irq = gpiod_to_irq(d);
+		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+		nokia770_i2c_board_info_2[0].irq = irq;
+	}
+	d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
+	if (IS_ERR(d)) {
+		pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
+	} else {
+		irq = gpiod_to_irq(d);
+		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+		nokia770_i2c_board_info_2[1].irq = irq;
 	}
-	irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING);
-	irq_set_irq_type(gpio_to_irq(tahvo_irq_gpio), IRQ_TYPE_EDGE_RISING);
-	nokia770_i2c_board_info_2[0].irq = gpio_to_irq(retu_irq_gpio);
-	nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
 	i2c_register_board_info(2, nokia770_i2c_board_info_2,
 				ARRAY_SIZE(nokia770_i2c_board_info_2));
 	device_create_managed_software_node(&nokia770_cbus_device.dev,
@@ -275,8 +281,25 @@  static void __init nokia770_cbus_init(void)
 }
 #endif /* CONFIG_I2C_CBUS_GPIO */
 
+static struct gpiod_lookup_table nokia770_irq_gpio_table = {
+	.dev_id = NULL,
+	.table = {
+		/* GPIO used by SPI device 1 */
+		GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
+			    GPIO_ACTIVE_HIGH),
+		/* GPIO used for retu IRQ */
+		GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
+			    GPIO_ACTIVE_HIGH),
+		/* GPIO used for tahvo IRQ */
+		GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
+			    GPIO_ACTIVE_HIGH),
+	},
+};
+
 static void __init omap_nokia770_init(void)
 {
+	struct gpio_desc *d;
+
 	/* On Nokia 770, the SleepX signal is masked with an
 	 * MPUIO line by default.  It has to be unmasked for it
 	 * to become functional */
@@ -288,6 +311,14 @@  static void __init omap_nokia770_init(void)
 
 	software_node_register_node_group(nokia770_gpiochip_nodes);
 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
+
+	gpiod_add_lookup_table(&nokia770_irq_gpio_table);
+	d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
+	if (IS_ERR(d))
+		pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
+	else
+		nokia770_spi_board_info[1].irq = gpiod_to_irq(d);
+
 	spi_register_board_info(nokia770_spi_board_info,
 				ARRAY_SIZE(nokia770_spi_board_info));
 	omap_serial_init();