gpio/mxc: move irq_domain_add_legacy call into gpio driver

Move irq_domain_add_legacy call from imx*-dt.c into gpio driver and
have the gpio driver adopt irqdomain support for both DT and non-DT
boot.

With all imx platform code converted from static gpio irq number
computation to use run-time gpio_to_irq call, we can now use
irq_alloc_descs and irqdomain support to dynamically get irq_base
and have the mapping between gpio and irq number available without
using virtual_irq_start and MXC_GPIO_IRQ_START.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>

4 files changed, 0 insertions, 51 deletions

diff --git a/arch/arm/mach-imx/imx27-dt.c b/arch/arm/mach-imx/imx27-dt.c
index eee0cc8d92a4..c734e564f204 100644
--- a/arch/arm/mach-imx/imx27-dt.c
+++ b/arch/arm/mach-imx/imx27-dt.c
@@ -40,21 +40,8 @@ static int __init imx27_avic_add_irq_domain(struct device_node *np,
 	return 0;
 }
 
-static int __init imx27_gpio_add_irq_domain(struct device_node *np,
-				struct device_node *interrupt_parent)
-{
-	static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
-
-	gpio_irq_base -= 32;
-	irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops,
-				NULL);
-
-	return 0;
-}
-
 static const struct of_device_id imx27_irq_match[] __initconst = {
 	{ .compatible = "fsl,imx27-avic", .data = imx27_avic_add_irq_domain, },
-	{ .compatible = "fsl,imx27-gpio", .data = imx27_gpio_add_irq_domain, },
 	{ /* sentinel */ }
 };
 
diff --git a/arch/arm/mach-imx/imx51-dt.c b/arch/arm/mach-imx/imx51-dt.c
index 18e78dba4298..3bdabbc64f43 100644
--- a/arch/arm/mach-imx/imx51-dt.c
+++ b/arch/arm/mach-imx/imx51-dt.c
@@ -52,20 +52,8 @@ static int __init imx51_tzic_add_irq_domain(struct device_node *np,
 	return 0;
 }
 
-static int __init imx51_gpio_add_irq_domain(struct device_node *np,
-				struct device_node *interrupt_parent)
-{
-	static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
-
-	gpio_irq_base -= 32;
-	irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
-
-	return 0;
-}
-
 static const struct of_device_id imx51_irq_match[] __initconst = {
 	{ .compatible = "fsl,imx51-tzic", .data = imx51_tzic_add_irq_domain, },
-	{ .compatible = "fsl,imx51-gpio", .data = imx51_gpio_add_irq_domain, },
 	{ /* sentinel */ }
 };
 
diff --git a/arch/arm/mach-imx/imx53-dt.c b/arch/arm/mach-imx/imx53-dt.c
index eb04b6248e48..17fca3cac268 100644
--- a/arch/arm/mach-imx/imx53-dt.c
+++ b/arch/arm/mach-imx/imx53-dt.c
@@ -59,20 +59,8 @@ static int __init imx53_tzic_add_irq_domain(struct device_node *np,
 	return 0;
 }
 
-static int __init imx53_gpio_add_irq_domain(struct device_node *np,
-				struct device_node *interrupt_parent)
-{
-	static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
-
-	gpio_irq_base -= 32;
-	irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
-
-	return 0;
-}
-
 static const struct of_device_id imx53_irq_match[] __initconst = {
 	{ .compatible = "fsl,imx53-tzic", .data = imx53_tzic_add_irq_domain, },
-	{ .compatible = "fsl,imx53-gpio", .data = imx53_gpio_add_irq_domain, },
 	{ /* sentinel */ }
 };
 
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index b47e98b7d539..8c2a649192ca 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -16,7 +16,6 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/irq.h>
-#include <linux/irqdomain.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
@@ -136,21 +135,8 @@ static void __init imx6q_map_io(void)
 	imx6q_clock_map_io();
 }
 
-static int __init imx6q_gpio_add_irq_domain(struct device_node *np,
-				struct device_node *interrupt_parent)
-{
-	static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
-
-	gpio_irq_base -= 32;
-	irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops,
-			      NULL);
-
-	return 0;
-}
-
 static const struct of_device_id imx6q_irq_match[] __initconst = {
 	{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
-	{ .compatible = "fsl,imx6q-gpio", .data = imx6q_gpio_add_irq_domain, },
 	{ /* sentinel */ }
 };