* [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio
@ 2011-06-04 11:47 Shawn Guo
2011-06-04 11:47 ` [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c " Shawn Guo
` (4 more replies)
0 siblings, 5 replies; 7+ messages in thread
From: Shawn Guo @ 2011-06-04 11:47 UTC (permalink / raw)
To: linux-kernel; +Cc: grant.likely, arnd, olof, kernel, linux-arm-kernel, patches
The patch set moves plat-mxc gpio driver into drivers/gpio, and
migrates mach-imx and mach-mx5 to the new driver.
Changes since v2:
* Add a patch as the first one just copying plat-mxc gpio into
drivers/gpio
* Add the missing ".owner = THIS_MOUDLE" for gpio-mxc driver
Shawn Guo (5):
gpio: gpio-mxc: copy plat-mxc/gpio.c into drivers/gpio
gpio: gpio-mxc: make it work for Freescale MXC architecture
ARM: mxc: migrate mach-mx5 gpio driver to gpio-mxc
ARM: mxc: migrate mach-imx gpio driver to gpio-mxc
ARM: mxc: remove plat-mxc/gpio driver
arch/arm/mach-imx/mach-apf9328.c | 2 +
arch/arm/mach-imx/mach-armadillo5x0.c | 2 +
arch/arm/mach-imx/mach-bug.c | 2 +
arch/arm/mach-imx/mach-cpuimx27.c | 2 +
arch/arm/mach-imx/mach-cpuimx35.c | 2 +
arch/arm/mach-imx/mach-eukrea_cpuimx25.c | 2 +
arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 2 +
arch/arm/mach-imx/mach-imx27ipcam.c | 2 +
arch/arm/mach-imx/mach-imx27lite.c | 2 +
arch/arm/mach-imx/mach-kzm_arm11_01.c | 2 +
arch/arm/mach-imx/mach-mx1ads.c | 2 +
arch/arm/mach-imx/mach-mx21ads.c | 2 +
arch/arm/mach-imx/mach-mx25_3ds.c | 2 +
arch/arm/mach-imx/mach-mx27_3ds.c | 2 +
arch/arm/mach-imx/mach-mx27ads.c | 2 +
arch/arm/mach-imx/mach-mx31_3ds.c | 2 +
arch/arm/mach-imx/mach-mx31ads.c | 2 +
arch/arm/mach-imx/mach-mx31lilly.c | 2 +
arch/arm/mach-imx/mach-mx31lite.c | 2 +
arch/arm/mach-imx/mach-mx31moboard.c | 2 +
arch/arm/mach-imx/mach-mx35_3ds.c | 2 +
arch/arm/mach-imx/mach-mxt_td60.c | 2 +
arch/arm/mach-imx/mach-pca100.c | 2 +
arch/arm/mach-imx/mach-pcm037.c | 2 +
arch/arm/mach-imx/mach-pcm038.c | 2 +
arch/arm/mach-imx/mach-pcm043.c | 2 +
arch/arm/mach-imx/mach-qong.c | 2 +
arch/arm/mach-imx/mach-scb9328.c | 2 +
arch/arm/mach-imx/mach-vpr200.c | 2 +
arch/arm/mach-imx/mm-imx1.c | 17 +-
arch/arm/mach-imx/mm-imx21.c | 21 +-
arch/arm/mach-imx/mm-imx25.c | 16 +-
arch/arm/mach-imx/mm-imx27.c | 21 +-
arch/arm/mach-imx/mm-imx31.c | 15 +-
arch/arm/mach-imx/mm-imx35.c | 15 +-
arch/arm/mach-mx5/board-cpuimx51.c | 2 +
arch/arm/mach-mx5/board-cpuimx51sd.c | 2 +
arch/arm/mach-mx5/board-mx50_rdp.c | 2 +
arch/arm/mach-mx5/board-mx51_3ds.c | 2 +
arch/arm/mach-mx5/board-mx51_babbage.c | 2 +
arch/arm/mach-mx5/board-mx51_efikamx.c | 2 +
arch/arm/mach-mx5/board-mx51_efikasb.c | 2 +
arch/arm/mach-mx5/board-mx53_evk.c | 2 +
arch/arm/mach-mx5/board-mx53_loco.c | 2 +
arch/arm/mach-mx5/board-mx53_smd.c | 2 +
arch/arm/mach-mx5/devices.c | 64 ------
arch/arm/mach-mx5/mm-mx50.c | 21 +-
arch/arm/mach-mx5/mm.c | 25 ++-
arch/arm/plat-mxc/Makefile | 2 +-
arch/arm/plat-mxc/devices.c | 11 +
arch/arm/plat-mxc/devices/Makefile | 1 +
arch/arm/plat-mxc/devices/platform-gpio-mxc.c | 32 +++
arch/arm/plat-mxc/include/mach/common.h | 12 +-
arch/arm/plat-mxc/include/mach/devices-common.h | 2 +
arch/arm/plat-mxc/include/mach/gpio.h | 27 ---
drivers/gpio/Makefile | 1 +
.../arm/plat-mxc/gpio.c => drivers/gpio/gpio-mxc.c | 217 +++++++++++++-------
57 files changed, 360 insertions(+), 238 deletions(-)
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c into drivers/gpio
2011-06-04 11:47 [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio Shawn Guo
@ 2011-06-04 11:47 ` Shawn Guo
2011-06-04 22:35 ` Grant Likely
2011-06-04 11:47 ` [PATCH v3 2/5] gpio: gpio-mxc: make it work for Freescale MXC architecture Shawn Guo
` (3 subsequent siblings)
4 siblings, 1 reply; 7+ messages in thread
From: Shawn Guo @ 2011-06-04 11:47 UTC (permalink / raw)
To: linux-kernel
Cc: grant.likely, arnd, olof, kernel, linux-arm-kernel, patches, Shawn Guo
As the first patch of the series that moves plat-mxc gpio driver into
drivers/gpio, it copies arch/arm/plat-mxc/gpio.c into
drivers/gpio/gpio-mxc.c. The later patches will make necessary
changes to the driver, migrate the existing users to it, and lastly
deletes plat-mxc gpio driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
drivers/gpio/gpio-mxc.c | 361 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 361 insertions(+), 0 deletions(-)
create mode 100644 drivers/gpio/gpio-mxc.c
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
new file mode 100644
index 0000000..6cd6d7f
--- /dev/null
+++ b/drivers/gpio/gpio-mxc.c
@@ -0,0 +1,361 @@
+/*
+ * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * Based on code from Freescale,
+ * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <mach/hardware.h>
+#include <asm-generic/bug.h>
+
+static struct mxc_gpio_port *mxc_gpio_ports;
+static int gpio_table_size;
+
+#define cpu_is_mx1_mx2() (cpu_is_mx1() || cpu_is_mx2())
+
+#define GPIO_DR (cpu_is_mx1_mx2() ? 0x1c : 0x00)
+#define GPIO_GDIR (cpu_is_mx1_mx2() ? 0x00 : 0x04)
+#define GPIO_PSR (cpu_is_mx1_mx2() ? 0x24 : 0x08)
+#define GPIO_ICR1 (cpu_is_mx1_mx2() ? 0x28 : 0x0C)
+#define GPIO_ICR2 (cpu_is_mx1_mx2() ? 0x2C : 0x10)
+#define GPIO_IMR (cpu_is_mx1_mx2() ? 0x30 : 0x14)
+#define GPIO_ISR (cpu_is_mx1_mx2() ? 0x34 : 0x18)
+
+#define GPIO_INT_LOW_LEV (cpu_is_mx1_mx2() ? 0x3 : 0x0)
+#define GPIO_INT_HIGH_LEV (cpu_is_mx1_mx2() ? 0x2 : 0x1)
+#define GPIO_INT_RISE_EDGE (cpu_is_mx1_mx2() ? 0x0 : 0x2)
+#define GPIO_INT_FALL_EDGE (cpu_is_mx1_mx2() ? 0x1 : 0x3)
+#define GPIO_INT_NONE 0x4
+
+/* Note: This driver assumes 32 GPIOs are handled in one register */
+
+static void _clear_gpio_irqstatus(struct mxc_gpio_port *port, u32 index)
+{
+ __raw_writel(1 << index, port->base + GPIO_ISR);
+}
+
+static void _set_gpio_irqenable(struct mxc_gpio_port *port, u32 index,
+ int enable)
+{
+ u32 l;
+
+ l = __raw_readl(port->base + GPIO_IMR);
+ l = (l & (~(1 << index))) | (!!enable << index);
+ __raw_writel(l, port->base + GPIO_IMR);
+}
+
+static void gpio_ack_irq(struct irq_data *d)
+{
+ u32 gpio = irq_to_gpio(d->irq);
+ _clear_gpio_irqstatus(&mxc_gpio_ports[gpio / 32], gpio & 0x1f);
+}
+
+static void gpio_mask_irq(struct irq_data *d)
+{
+ u32 gpio = irq_to_gpio(d->irq);
+ _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 0);
+}
+
+static void gpio_unmask_irq(struct irq_data *d)
+{
+ u32 gpio = irq_to_gpio(d->irq);
+ _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 1);
+}
+
+static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset);
+
+static int gpio_set_irq_type(struct irq_data *d, u32 type)
+{
+ u32 gpio = irq_to_gpio(d->irq);
+ struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
+ u32 bit, val;
+ int edge;
+ void __iomem *reg = port->base;
+
+ port->both_edges &= ~(1 << (gpio & 31));
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ edge = GPIO_INT_RISE_EDGE;
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ edge = GPIO_INT_FALL_EDGE;
+ break;
+ case IRQ_TYPE_EDGE_BOTH:
+ val = mxc_gpio_get(&port->chip, gpio & 31);
+ if (val) {
+ edge = GPIO_INT_LOW_LEV;
+ pr_debug("mxc: set GPIO %d to low trigger\n", gpio);
+ } else {
+ edge = GPIO_INT_HIGH_LEV;
+ pr_debug("mxc: set GPIO %d to high trigger\n", gpio);
+ }
+ port->both_edges |= 1 << (gpio & 31);
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ edge = GPIO_INT_LOW_LEV;
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ edge = GPIO_INT_HIGH_LEV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
+ bit = gpio & 0xf;
+ val = __raw_readl(reg) & ~(0x3 << (bit << 1));
+ __raw_writel(val | (edge << (bit << 1)), reg);
+ _clear_gpio_irqstatus(port, gpio & 0x1f);
+
+ return 0;
+}
+
+static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)
+{
+ void __iomem *reg = port->base;
+ u32 bit, val;
+ int edge;
+
+ reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
+ bit = gpio & 0xf;
+ val = __raw_readl(reg);
+ edge = (val >> (bit << 1)) & 3;
+ val &= ~(0x3 << (bit << 1));
+ if (edge == GPIO_INT_HIGH_LEV) {
+ edge = GPIO_INT_LOW_LEV;
+ pr_debug("mxc: switch GPIO %d to low trigger\n", gpio);
+ } else if (edge == GPIO_INT_LOW_LEV) {
+ edge = GPIO_INT_HIGH_LEV;
+ pr_debug("mxc: switch GPIO %d to high trigger\n", gpio);
+ } else {
+ pr_err("mxc: invalid configuration for GPIO %d: %x\n",
+ gpio, edge);
+ return;
+ }
+ __raw_writel(val | (edge << (bit << 1)), reg);
+}
+
+/* handle 32 interrupts in one status register */
+static void mxc_gpio_irq_handler(struct mxc_gpio_port *port, u32 irq_stat)
+{
+ u32 gpio_irq_no_base = port->virtual_irq_start;
+
+ while (irq_stat != 0) {
+ int irqoffset = fls(irq_stat) - 1;
+
+ if (port->both_edges & (1 << irqoffset))
+ mxc_flip_edge(port, irqoffset);
+
+ generic_handle_irq(gpio_irq_no_base + irqoffset);
+
+ irq_stat &= ~(1 << irqoffset);
+ }
+}
+
+/* MX1 and MX3 has one interrupt *per* gpio port */
+static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc)
+{
+ u32 irq_stat;
+ struct mxc_gpio_port *port = irq_get_handler_data(irq);
+
+ irq_stat = __raw_readl(port->base + GPIO_ISR) &
+ __raw_readl(port->base + GPIO_IMR);
+
+ mxc_gpio_irq_handler(port, irq_stat);
+}
+
+/* MX2 has one interrupt *for all* gpio ports */
+static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc)
+{
+ int i;
+ u32 irq_msk, irq_stat;
+ struct mxc_gpio_port *port = irq_get_handler_data(irq);
+
+ /* walk through all interrupt status registers */
+ for (i = 0; i < gpio_table_size; i++) {
+ irq_msk = __raw_readl(port[i].base + GPIO_IMR);
+ if (!irq_msk)
+ continue;
+
+ irq_stat = __raw_readl(port[i].base + GPIO_ISR) & irq_msk;
+ if (irq_stat)
+ mxc_gpio_irq_handler(&port[i], irq_stat);
+ }
+}
+
+/*
+ * Set interrupt number "irq" in the GPIO as a wake-up source.
+ * While system is running, all registered GPIO interrupts need to have
+ * wake-up enabled. When system is suspended, only selected GPIO interrupts
+ * need to have wake-up enabled.
+ * @param irq interrupt source number
+ * @param enable enable as wake-up if equal to non-zero
+ * @return This function returns 0 on success.
+ */
+static int gpio_set_wake_irq(struct irq_data *d, u32 enable)
+{
+ u32 gpio = irq_to_gpio(d->irq);
+ u32 gpio_idx = gpio & 0x1F;
+ struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
+
+ if (enable) {
+ if (port->irq_high && (gpio_idx >= 16))
+ enable_irq_wake(port->irq_high);
+ else
+ enable_irq_wake(port->irq);
+ } else {
+ if (port->irq_high && (gpio_idx >= 16))
+ disable_irq_wake(port->irq_high);
+ else
+ disable_irq_wake(port->irq);
+ }
+
+ return 0;
+}
+
+static struct irq_chip gpio_irq_chip = {
+ .name = "GPIO",
+ .irq_ack = gpio_ack_irq,
+ .irq_mask = gpio_mask_irq,
+ .irq_unmask = gpio_unmask_irq,
+ .irq_set_type = gpio_set_irq_type,
+ .irq_set_wake = gpio_set_wake_irq,
+};
+
+static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset,
+ int dir)
+{
+ struct mxc_gpio_port *port =
+ container_of(chip, struct mxc_gpio_port, chip);
+ u32 l;
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ l = __raw_readl(port->base + GPIO_GDIR);
+ if (dir)
+ l |= 1 << offset;
+ else
+ l &= ~(1 << offset);
+ __raw_writel(l, port->base + GPIO_GDIR);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void mxc_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct mxc_gpio_port *port =
+ container_of(chip, struct mxc_gpio_port, chip);
+ void __iomem *reg = port->base + GPIO_DR;
+ u32 l;
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ l = (__raw_readl(reg) & (~(1 << offset))) | (!!value << offset);
+ __raw_writel(l, reg);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct mxc_gpio_port *port =
+ container_of(chip, struct mxc_gpio_port, chip);
+
+ return (__raw_readl(port->base + GPIO_PSR) >> offset) & 1;
+}
+
+static int mxc_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ _set_gpio_direction(chip, offset, 0);
+ return 0;
+}
+
+static int mxc_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ mxc_gpio_set(chip, offset, value);
+ _set_gpio_direction(chip, offset, 1);
+ return 0;
+}
+
+/*
+ * This lock class tells lockdep that GPIO irqs are in a different
+ * category than their parents, so it won't report false recursion.
+ */
+static struct lock_class_key gpio_lock_class;
+
+int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
+{
+ int i, j;
+
+ /* save for local usage */
+ mxc_gpio_ports = port;
+ gpio_table_size = cnt;
+
+ printk(KERN_INFO "MXC GPIO hardware\n");
+
+ for (i = 0; i < cnt; i++) {
+ /* disable the interrupt and clear the status */
+ __raw_writel(0, port[i].base + GPIO_IMR);
+ __raw_writel(~0, port[i].base + GPIO_ISR);
+ for (j = port[i].virtual_irq_start;
+ j < port[i].virtual_irq_start + 32; j++) {
+ irq_set_lockdep_class(j, &gpio_lock_class);
+ irq_set_chip_and_handler(j, &gpio_irq_chip,
+ handle_level_irq);
+ set_irq_flags(j, IRQF_VALID);
+ }
+
+ /* register gpio chip */
+ port[i].chip.direction_input = mxc_gpio_direction_input;
+ port[i].chip.direction_output = mxc_gpio_direction_output;
+ port[i].chip.get = mxc_gpio_get;
+ port[i].chip.set = mxc_gpio_set;
+ port[i].chip.base = i * 32;
+ port[i].chip.ngpio = 32;
+
+ spin_lock_init(&port[i].lock);
+
+ /* its a serious configuration bug when it fails */
+ BUG_ON( gpiochip_add(&port[i].chip) < 0 );
+
+ if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
+ /* setup one handler for each entry */
+ irq_set_chained_handler(port[i].irq,
+ mx3_gpio_irq_handler);
+ irq_set_handler_data(port[i].irq, &port[i]);
+ if (port[i].irq_high) {
+ /* setup handler for GPIO 16 to 31 */
+ irq_set_chained_handler(port[i].irq_high,
+ mx3_gpio_irq_handler);
+ irq_set_handler_data(port[i].irq_high,
+ &port[i]);
+ }
+ }
+ }
+
+ if (cpu_is_mx2()) {
+ /* setup one handler for all GPIO interrupts */
+ irq_set_chained_handler(port[0].irq, mx2_gpio_irq_handler);
+ irq_set_handler_data(port[0].irq, port);
+ }
+
+ return 0;
+}
--
1.7.4.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 2/5] gpio: gpio-mxc: make it work for Freescale MXC architecture
2011-06-04 11:47 [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio Shawn Guo
2011-06-04 11:47 ` [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c " Shawn Guo
@ 2011-06-04 11:47 ` Shawn Guo
2011-06-04 11:47 ` [PATCH v3 3/5] ARM: mxc: migrate mach-mx5 gpio driver to gpio-mxc Shawn Guo
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Shawn Guo @ 2011-06-04 11:47 UTC (permalink / raw)
To: linux-kernel
Cc: grant.likely, arnd, olof, kernel, linux-arm-kernel, patches, Shawn Guo
The patch makes necessary changes as below to make gpio-mxc work
for Freescale MXC based SoCs.
* Use readl/writel to replace mach-specific accessors
__raw_readl/__raw_writel
* Migrate to platform driver by adding .probe function
* Add a list to save all mx2 ports references, so that
mx2_gpio_irq_handler can walk through all interrupt status
registers
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
---
arch/arm/plat-mxc/include/mach/gpio.h | 1 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-mxc.c | 206 +++++++++++++++++++++------------
3 files changed, 136 insertions(+), 72 deletions(-)
diff --git a/arch/arm/plat-mxc/include/mach/gpio.h b/arch/arm/plat-mxc/include/mach/gpio.h
index a2747f1..f89252c 100644
--- a/arch/arm/plat-mxc/include/mach/gpio.h
+++ b/arch/arm/plat-mxc/include/mach/gpio.h
@@ -37,6 +37,7 @@
#define irq_to_gpio(irq) ((irq) - MXC_GPIO_IRQ_START)
struct mxc_gpio_port {
+ struct list_head node;
void __iomem *base;
int irq;
int irq_high;
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index b605f8e..060eb79 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -47,4 +47,5 @@ obj-$(CONFIG_GPIO_SX150X) += sx150x.o
obj-$(CONFIG_GPIO_VX855) += vx855_gpio.o
obj-$(CONFIG_GPIO_ML_IOH) += ml_ioh_gpio.o
obj-$(CONFIG_AB8500_GPIO) += ab8500-gpio.o
+obj-$(CONFIG_ARCH_MXC) += gpio-mxc.o
obj-$(CONFIG_GPIO_TPS65910) += tps65910-gpio.o
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 6cd6d7f..0951983 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -24,11 +24,17 @@
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
#include <mach/hardware.h>
#include <asm-generic/bug.h>
-static struct mxc_gpio_port *mxc_gpio_ports;
-static int gpio_table_size;
+/*
+ * MX2 has one interrupt *for all* gpio ports. The list is used
+ * to save the references to all ports, so that mx2_gpio_irq_handler
+ * can walk through all interrupt status registers.
+ */
+static LIST_HEAD(mxc_gpio_ports);
#define cpu_is_mx1_mx2() (cpu_is_mx1() || cpu_is_mx2())
@@ -50,7 +56,7 @@ static int gpio_table_size;
static void _clear_gpio_irqstatus(struct mxc_gpio_port *port, u32 index)
{
- __raw_writel(1 << index, port->base + GPIO_ISR);
+ writel(1 << index, port->base + GPIO_ISR);
}
static void _set_gpio_irqenable(struct mxc_gpio_port *port, u32 index,
@@ -58,27 +64,30 @@ static void _set_gpio_irqenable(struct mxc_gpio_port *port, u32 index,
{
u32 l;
- l = __raw_readl(port->base + GPIO_IMR);
+ l = readl(port->base + GPIO_IMR);
l = (l & (~(1 << index))) | (!!enable << index);
- __raw_writel(l, port->base + GPIO_IMR);
+ writel(l, port->base + GPIO_IMR);
}
static void gpio_ack_irq(struct irq_data *d)
{
+ struct mxc_gpio_port *port = irq_data_get_irq_chip_data(d);
u32 gpio = irq_to_gpio(d->irq);
- _clear_gpio_irqstatus(&mxc_gpio_ports[gpio / 32], gpio & 0x1f);
+ _clear_gpio_irqstatus(port, gpio & 0x1f);
}
static void gpio_mask_irq(struct irq_data *d)
{
+ struct mxc_gpio_port *port = irq_data_get_irq_chip_data(d);
u32 gpio = irq_to_gpio(d->irq);
- _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 0);
+ _set_gpio_irqenable(port, gpio & 0x1f, 0);
}
static void gpio_unmask_irq(struct irq_data *d)
{
+ struct mxc_gpio_port *port = irq_data_get_irq_chip_data(d);
u32 gpio = irq_to_gpio(d->irq);
- _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 1);
+ _set_gpio_irqenable(port, gpio & 0x1f, 1);
}
static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset);
@@ -86,7 +95,7 @@ static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset);
static int gpio_set_irq_type(struct irq_data *d, u32 type)
{
u32 gpio = irq_to_gpio(d->irq);
- struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
+ struct mxc_gpio_port *port = irq_data_get_irq_chip_data(d);
u32 bit, val;
int edge;
void __iomem *reg = port->base;
@@ -122,8 +131,8 @@ static int gpio_set_irq_type(struct irq_data *d, u32 type)
reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
bit = gpio & 0xf;
- val = __raw_readl(reg) & ~(0x3 << (bit << 1));
- __raw_writel(val | (edge << (bit << 1)), reg);
+ val = readl(reg) & ~(0x3 << (bit << 1));
+ writel(val | (edge << (bit << 1)), reg);
_clear_gpio_irqstatus(port, gpio & 0x1f);
return 0;
@@ -137,7 +146,7 @@ static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)
reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
bit = gpio & 0xf;
- val = __raw_readl(reg);
+ val = readl(reg);
edge = (val >> (bit << 1)) & 3;
val &= ~(0x3 << (bit << 1));
if (edge == GPIO_INT_HIGH_LEV) {
@@ -151,7 +160,7 @@ static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)
gpio, edge);
return;
}
- __raw_writel(val | (edge << (bit << 1)), reg);
+ writel(val | (edge << (bit << 1)), reg);
}
/* handle 32 interrupts in one status register */
@@ -177,8 +186,7 @@ static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc)
u32 irq_stat;
struct mxc_gpio_port *port = irq_get_handler_data(irq);
- irq_stat = __raw_readl(port->base + GPIO_ISR) &
- __raw_readl(port->base + GPIO_IMR);
+ irq_stat = readl(port->base + GPIO_ISR) & readl(port->base + GPIO_IMR);
mxc_gpio_irq_handler(port, irq_stat);
}
@@ -186,19 +194,18 @@ static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc)
/* MX2 has one interrupt *for all* gpio ports */
static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc)
{
- int i;
u32 irq_msk, irq_stat;
- struct mxc_gpio_port *port = irq_get_handler_data(irq);
+ struct mxc_gpio_port *port;
/* walk through all interrupt status registers */
- for (i = 0; i < gpio_table_size; i++) {
- irq_msk = __raw_readl(port[i].base + GPIO_IMR);
+ list_for_each_entry(port, &mxc_gpio_ports, node) {
+ irq_msk = readl(port->base + GPIO_IMR);
if (!irq_msk)
continue;
- irq_stat = __raw_readl(port[i].base + GPIO_ISR) & irq_msk;
+ irq_stat = readl(port->base + GPIO_ISR) & irq_msk;
if (irq_stat)
- mxc_gpio_irq_handler(&port[i], irq_stat);
+ mxc_gpio_irq_handler(port, irq_stat);
}
}
@@ -215,7 +222,7 @@ static int gpio_set_wake_irq(struct irq_data *d, u32 enable)
{
u32 gpio = irq_to_gpio(d->irq);
u32 gpio_idx = gpio & 0x1F;
- struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
+ struct mxc_gpio_port *port = irq_data_get_irq_chip_data(d);
if (enable) {
if (port->irq_high && (gpio_idx >= 16))
@@ -250,12 +257,12 @@ static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset,
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
- l = __raw_readl(port->base + GPIO_GDIR);
+ l = readl(port->base + GPIO_GDIR);
if (dir)
l |= 1 << offset;
else
l &= ~(1 << offset);
- __raw_writel(l, port->base + GPIO_GDIR);
+ writel(l, port->base + GPIO_GDIR);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -268,8 +275,8 @@ static void mxc_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
- l = (__raw_readl(reg) & (~(1 << offset))) | (!!value << offset);
- __raw_writel(l, reg);
+ l = (readl(reg) & (~(1 << offset))) | (!!value << offset);
+ writel(l, reg);
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -278,7 +285,7 @@ static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset)
struct mxc_gpio_port *port =
container_of(chip, struct mxc_gpio_port, chip);
- return (__raw_readl(port->base + GPIO_PSR) >> offset) & 1;
+ return (readl(port->base + GPIO_PSR) >> offset) & 1;
}
static int mxc_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -301,61 +308,116 @@ static int mxc_gpio_direction_output(struct gpio_chip *chip,
*/
static struct lock_class_key gpio_lock_class;
-int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
+static int __devinit mxc_gpio_probe(struct platform_device *pdev)
{
- int i, j;
-
- /* save for local usage */
- mxc_gpio_ports = port;
- gpio_table_size = cnt;
-
- printk(KERN_INFO "MXC GPIO hardware\n");
-
- for (i = 0; i < cnt; i++) {
- /* disable the interrupt and clear the status */
- __raw_writel(0, port[i].base + GPIO_IMR);
- __raw_writel(~0, port[i].base + GPIO_ISR);
- for (j = port[i].virtual_irq_start;
- j < port[i].virtual_irq_start + 32; j++) {
- irq_set_lockdep_class(j, &gpio_lock_class);
- irq_set_chip_and_handler(j, &gpio_irq_chip,
- handle_level_irq);
- set_irq_flags(j, IRQF_VALID);
- }
+ struct mxc_gpio_port *port;
+ struct resource *iores;
+ int err, i;
- /* register gpio chip */
- port[i].chip.direction_input = mxc_gpio_direction_input;
- port[i].chip.direction_output = mxc_gpio_direction_output;
- port[i].chip.get = mxc_gpio_get;
- port[i].chip.set = mxc_gpio_set;
- port[i].chip.base = i * 32;
- port[i].chip.ngpio = 32;
+ port = kzalloc(sizeof(struct mxc_gpio_port), GFP_KERNEL);
+ if (!port)
+ return -ENOMEM;
- spin_lock_init(&port[i].lock);
+ port->virtual_irq_start = MXC_GPIO_IRQ_START + pdev->id * 32;
- /* its a serious configuration bug when it fails */
- BUG_ON( gpiochip_add(&port[i].chip) < 0 );
+ iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!iores) {
+ err = -ENODEV;
+ goto out_kfree;
+ }
- if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
- /* setup one handler for each entry */
- irq_set_chained_handler(port[i].irq,
- mx3_gpio_irq_handler);
- irq_set_handler_data(port[i].irq, &port[i]);
- if (port[i].irq_high) {
- /* setup handler for GPIO 16 to 31 */
- irq_set_chained_handler(port[i].irq_high,
- mx3_gpio_irq_handler);
- irq_set_handler_data(port[i].irq_high,
- &port[i]);
- }
- }
+ if (!request_mem_region(iores->start, resource_size(iores),
+ pdev->name)) {
+ err = -EBUSY;
+ goto out_kfree;
+ }
+
+ port->base = ioremap(iores->start, resource_size(iores));
+ if (!port->base) {
+ err = -ENOMEM;
+ goto out_release_mem;
+ }
+
+ port->irq_high = platform_get_irq(pdev, 1);
+ port->irq = platform_get_irq(pdev, 0);
+ if (port->irq < 0) {
+ err = -EINVAL;
+ goto out_iounmap;
+ }
+
+ /* disable the interrupt and clear the status */
+ writel(0, port->base + GPIO_IMR);
+ writel(~0, port->base + GPIO_ISR);
+
+ for (i = port->virtual_irq_start;
+ i < port->virtual_irq_start + 32; i++) {
+ irq_set_lockdep_class(i, &gpio_lock_class);
+ irq_set_chip_and_handler(i, &gpio_irq_chip, handle_level_irq);
+ set_irq_flags(i, IRQF_VALID);
+ irq_set_chip_data(i, port);
}
if (cpu_is_mx2()) {
/* setup one handler for all GPIO interrupts */
- irq_set_chained_handler(port[0].irq, mx2_gpio_irq_handler);
- irq_set_handler_data(port[0].irq, port);
+ if (pdev->id == 0)
+ irq_set_chained_handler(port->irq,
+ mx2_gpio_irq_handler);
+ } else {
+ /* setup one handler for each entry */
+ irq_set_chained_handler(port->irq, mx3_gpio_irq_handler);
+ irq_set_handler_data(port->irq, port);
+ if (port->irq_high > 0) {
+ /* setup handler for GPIO 16 to 31 */
+ irq_set_chained_handler(port->irq_high,
+ mx3_gpio_irq_handler);
+ irq_set_handler_data(port->irq_high, port);
+ }
}
+ /* register gpio chip */
+ port->chip.direction_input = mxc_gpio_direction_input;
+ port->chip.direction_output = mxc_gpio_direction_output;
+ port->chip.get = mxc_gpio_get;
+ port->chip.set = mxc_gpio_set;
+ port->chip.base = pdev->id * 32;
+ port->chip.ngpio = 32;
+
+ spin_lock_init(&port->lock);
+
+ err = gpiochip_add(&port->chip);
+ if (err)
+ goto out_iounmap;
+
+ list_add_tail(&port->node, &mxc_gpio_ports);
+
return 0;
+
+out_iounmap:
+ iounmap(port->base);
+out_release_mem:
+ release_mem_region(iores->start, resource_size(iores));
+out_kfree:
+ kfree(port);
+ dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err);
+ return err;
}
+
+static struct platform_driver mxc_gpio_driver = {
+ .driver = {
+ .name = "gpio-mxc",
+ .owner = THIS_MODULE,
+ },
+ .probe = mxc_gpio_probe,
+};
+
+static int __init gpio_mxc_init(void)
+{
+ return platform_driver_register(&mxc_gpio_driver);
+}
+postcore_initcall(gpio_mxc_init);
+
+MODULE_AUTHOR("Freescale Semiconductor, "
+ "Daniel Mack <danielncaiaq.de>, "
+ "Juergen Beisert <kernel@pengutronix.de>");
+MODULE_DESCRIPTION("Freescale MXC GPIO");
+MODULE_LICENSE("GPL");
--
1.7.4.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 3/5] ARM: mxc: migrate mach-mx5 gpio driver to gpio-mxc
2011-06-04 11:47 [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio Shawn Guo
2011-06-04 11:47 ` [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c " Shawn Guo
2011-06-04 11:47 ` [PATCH v3 2/5] gpio: gpio-mxc: make it work for Freescale MXC architecture Shawn Guo
@ 2011-06-04 11:47 ` Shawn Guo
2011-06-04 11:47 ` [PATCH v3 4/5] ARM: mxc: migrate mach-imx " Shawn Guo
2011-06-04 11:47 ` [PATCH v3 5/5] ARM: mxc: remove plat-mxc/gpio driver Shawn Guo
4 siblings, 0 replies; 7+ messages in thread
From: Shawn Guo @ 2011-06-04 11:47 UTC (permalink / raw)
To: linux-kernel
Cc: grant.likely, arnd, olof, kernel, linux-arm-kernel, patches, Shawn Guo
It registers platform device for drivers/gpio/gpio-mxc, and migrates
mx50/mx51/mx53 gpio driver to gpio-mxc.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
---
arch/arm/mach-mx5/board-cpuimx51.c | 2 +
arch/arm/mach-mx5/board-cpuimx51sd.c | 2 +
arch/arm/mach-mx5/board-mx50_rdp.c | 2 +
arch/arm/mach-mx5/board-mx51_3ds.c | 2 +
arch/arm/mach-mx5/board-mx51_babbage.c | 2 +
arch/arm/mach-mx5/board-mx51_efikamx.c | 2 +
arch/arm/mach-mx5/board-mx51_efikasb.c | 2 +
arch/arm/mach-mx5/board-mx53_evk.c | 2 +
arch/arm/mach-mx5/board-mx53_loco.c | 2 +
arch/arm/mach-mx5/board-mx53_smd.c | 2 +
arch/arm/mach-mx5/devices.c | 64 -----------------------
arch/arm/mach-mx5/mm-mx50.c | 21 ++++----
arch/arm/mach-mx5/mm.c | 25 +++++++--
arch/arm/plat-mxc/devices.c | 11 ++++
arch/arm/plat-mxc/devices/Makefile | 1 +
arch/arm/plat-mxc/devices/platform-gpio-mxc.c | 32 +++++++++++
arch/arm/plat-mxc/include/mach/common.h | 6 ++-
arch/arm/plat-mxc/include/mach/devices-common.h | 2 +
18 files changed, 100 insertions(+), 82 deletions(-)
create mode 100644 arch/arm/plat-mxc/devices/platform-gpio-mxc.c
diff --git a/arch/arm/mach-mx5/board-cpuimx51.c b/arch/arm/mach-mx5/board-cpuimx51.c
index 4efa02e..add0d42 100644
--- a/arch/arm/mach-mx5/board-cpuimx51.c
+++ b/arch/arm/mach-mx5/board-cpuimx51.c
@@ -245,6 +245,8 @@ __setup("otg_mode=", eukrea_cpuimx51_otg_mode);
*/
static void __init eukrea_cpuimx51_init(void)
{
+ imx51_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51_pads,
ARRAY_SIZE(eukrea_cpuimx51_pads));
diff --git a/arch/arm/mach-mx5/board-cpuimx51sd.c b/arch/arm/mach-mx5/board-cpuimx51sd.c
index 5ef25a5..ff096d5 100644
--- a/arch/arm/mach-mx5/board-cpuimx51sd.c
+++ b/arch/arm/mach-mx5/board-cpuimx51sd.c
@@ -264,6 +264,8 @@ static struct platform_device *platform_devices[] __initdata = {
static void __init eukrea_cpuimx51sd_init(void)
{
+ imx51_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51sd_pads,
ARRAY_SIZE(eukrea_cpuimx51sd_pads));
diff --git a/arch/arm/mach-mx5/board-mx50_rdp.c b/arch/arm/mach-mx5/board-mx50_rdp.c
index 11210e1..7de25c6 100644
--- a/arch/arm/mach-mx5/board-mx50_rdp.c
+++ b/arch/arm/mach-mx5/board-mx50_rdp.c
@@ -192,6 +192,8 @@ static const struct imxi2c_platform_data i2c_data __initconst = {
*/
static void __init mx50_rdp_board_init(void)
{
+ imx50_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx50_rdp_pads,
ARRAY_SIZE(mx50_rdp_pads));
diff --git a/arch/arm/mach-mx5/board-mx51_3ds.c b/arch/arm/mach-mx5/board-mx51_3ds.c
index 63dfbea..3112d15 100644
--- a/arch/arm/mach-mx5/board-mx51_3ds.c
+++ b/arch/arm/mach-mx5/board-mx51_3ds.c
@@ -135,6 +135,8 @@ static struct spi_board_info mx51_3ds_spi_nor_device[] = {
*/
static void __init mx51_3ds_init(void)
{
+ imx51_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx51_3ds_pads,
ARRAY_SIZE(mx51_3ds_pads));
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index c7b3fab..6021dd0 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -340,6 +340,8 @@ static void __init mx51_babbage_init(void)
iomux_v3_cfg_t power_key = _MX51_PAD_EIM_A27__GPIO2_21 |
MUX_PAD_CTRL(PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | PAD_CTL_PUS_100K_UP);
+ imx51_soc_init();
+
#if defined(CONFIG_CPU_FREQ_IMX)
get_cpu_op = mx51_get_cpu_op;
#endif
diff --git a/arch/arm/mach-mx5/board-mx51_efikamx.c b/arch/arm/mach-mx5/board-mx51_efikamx.c
index 6e36231..3be603b 100644
--- a/arch/arm/mach-mx5/board-mx51_efikamx.c
+++ b/arch/arm/mach-mx5/board-mx51_efikamx.c
@@ -236,6 +236,8 @@ late_initcall(mx51_efikamx_power_init);
static void __init mx51_efikamx_init(void)
{
+ imx51_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
ARRAY_SIZE(mx51efikamx_pads));
efika_board_common_init();
diff --git a/arch/arm/mach-mx5/board-mx51_efikasb.c b/arch/arm/mach-mx5/board-mx51_efikasb.c
index 474fc6e..4b2e522 100644
--- a/arch/arm/mach-mx5/board-mx51_efikasb.c
+++ b/arch/arm/mach-mx5/board-mx51_efikasb.c
@@ -248,6 +248,8 @@ static void __init mx51_efikasb_board_id(void)
static void __init efikasb_board_init(void)
{
+ imx51_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx51efikasb_pads,
ARRAY_SIZE(mx51efikasb_pads));
efika_board_common_init();
diff --git a/arch/arm/mach-mx5/board-mx53_evk.c b/arch/arm/mach-mx5/board-mx53_evk.c
index f87d571..0d9218a 100644
--- a/arch/arm/mach-mx5/board-mx53_evk.c
+++ b/arch/arm/mach-mx5/board-mx53_evk.c
@@ -117,6 +117,8 @@ static const struct spi_imx_master mx53_evk_spi_data __initconst = {
static void __init mx53_evk_board_init(void)
{
+ imx53_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
ARRAY_SIZE(mx53_evk_pads));
mx53_evk_init_uart();
diff --git a/arch/arm/mach-mx5/board-mx53_loco.c b/arch/arm/mach-mx5/board-mx53_loco.c
index 1b947e8..359c3e2 100644
--- a/arch/arm/mach-mx5/board-mx53_loco.c
+++ b/arch/arm/mach-mx5/board-mx53_loco.c
@@ -227,6 +227,8 @@ static const struct imxi2c_platform_data mx53_loco_i2c_data __initconst = {
static void __init mx53_loco_board_init(void)
{
+ imx53_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx53_loco_pads,
ARRAY_SIZE(mx53_loco_pads));
imx53_add_imx_uart(0, NULL);
diff --git a/arch/arm/mach-mx5/board-mx53_smd.c b/arch/arm/mach-mx5/board-mx53_smd.c
index 817c089..bc02894 100644
--- a/arch/arm/mach-mx5/board-mx53_smd.c
+++ b/arch/arm/mach-mx5/board-mx53_smd.c
@@ -113,6 +113,8 @@ static const struct imxi2c_platform_data mx53_smd_i2c_data __initconst = {
static void __init mx53_smd_board_init(void)
{
+ imx53_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx53_smd_pads,
ARRAY_SIZE(mx53_smd_pads));
mx53_smd_init_uart();
diff --git a/arch/arm/mach-mx5/devices.c b/arch/arm/mach-mx5/devices.c
index 153ada5..371ca8c 100644
--- a/arch/arm/mach-mx5/devices.c
+++ b/arch/arm/mach-mx5/devices.c
@@ -12,7 +12,6 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
-#include <linux/gpio.h>
#include <mach/hardware.h>
#include <mach/imx-uart.h>
#include <mach/irqs.h>
@@ -119,66 +118,3 @@ struct platform_device mxc_usbh2_device = {
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
-
-static struct mxc_gpio_port mxc_gpio_ports[] = {
- {
- .chip.label = "gpio-0",
- .base = MX51_IO_ADDRESS(MX51_GPIO1_BASE_ADDR),
- .irq = MX51_MXC_INT_GPIO1_LOW,
- .irq_high = MX51_MXC_INT_GPIO1_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START
- },
- {
- .chip.label = "gpio-1",
- .base = MX51_IO_ADDRESS(MX51_GPIO2_BASE_ADDR),
- .irq = MX51_MXC_INT_GPIO2_LOW,
- .irq_high = MX51_MXC_INT_GPIO2_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 1
- },
- {
- .chip.label = "gpio-2",
- .base = MX51_IO_ADDRESS(MX51_GPIO3_BASE_ADDR),
- .irq = MX51_MXC_INT_GPIO3_LOW,
- .irq_high = MX51_MXC_INT_GPIO3_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 2
- },
- {
- .chip.label = "gpio-3",
- .base = MX51_IO_ADDRESS(MX51_GPIO4_BASE_ADDR),
- .irq = MX51_MXC_INT_GPIO4_LOW,
- .irq_high = MX51_MXC_INT_GPIO4_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 3
- },
- {
- .chip.label = "gpio-4",
- .base = MX53_IO_ADDRESS(MX53_GPIO5_BASE_ADDR),
- .irq = MX53_INT_GPIO5_LOW,
- .irq_high = MX53_INT_GPIO5_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 4
- },
- {
- .chip.label = "gpio-5",
- .base = MX53_IO_ADDRESS(MX53_GPIO6_BASE_ADDR),
- .irq = MX53_INT_GPIO6_LOW,
- .irq_high = MX53_INT_GPIO6_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 5
- },
- {
- .chip.label = "gpio-6",
- .base = MX53_IO_ADDRESS(MX53_GPIO7_BASE_ADDR),
- .irq = MX53_INT_GPIO7_LOW,
- .irq_high = MX53_INT_GPIO7_HIGH,
- .virtual_irq_start = MXC_GPIO_IRQ_START + 32 * 6
- },
-};
-
-int __init imx51_register_gpios(void)
-{
- return mxc_gpio_init(mxc_gpio_ports, 4);
-}
-
-int __init imx53_register_gpios(void)
-{
- return mxc_gpio_init(mxc_gpio_ports, ARRAY_SIZE(mxc_gpio_ports));
-}
-
diff --git a/arch/arm/mach-mx5/mm-mx50.c b/arch/arm/mach-mx5/mm-mx50.c
index b9c363b..28c3f60 100644
--- a/arch/arm/mach-mx5/mm-mx50.c
+++ b/arch/arm/mach-mx5/mm-mx50.c
@@ -26,7 +26,6 @@
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/iomux-v3.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
/*
@@ -56,17 +55,17 @@ void __init imx50_init_early(void)
mxc_arch_reset_init(MX50_IO_ADDRESS(MX50_WDOG_BASE_ADDR));
}
-static struct mxc_gpio_port imx50_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(MX50, 0, 1, MX50_INT_GPIO1_LOW, MX50_INT_GPIO1_HIGH),
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(MX50, 1, 2, MX50_INT_GPIO2_LOW, MX50_INT_GPIO2_HIGH),
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(MX50, 2, 3, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH),
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(MX50, 3, 4, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH),
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(MX50, 4, 5, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH),
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(MX50, 5, 6, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH),
-};
-
void __init mx50_init_irq(void)
{
tzic_init_irq(MX50_IO_ADDRESS(MX50_TZIC_BASE_ADDR));
- mxc_gpio_init(imx50_gpio_ports, ARRAY_SIZE(imx50_gpio_ports));
+}
+
+void __init imx50_soc_init(void)
+{
+ mxc_register_gpio(0, MX50_GPIO1_BASE_ADDR, SZ_16K, MX50_INT_GPIO1_LOW, MX50_INT_GPIO1_HIGH);
+ mxc_register_gpio(1, MX50_GPIO2_BASE_ADDR, SZ_16K, MX50_INT_GPIO2_LOW, MX50_INT_GPIO2_HIGH);
+ mxc_register_gpio(2, MX50_GPIO3_BASE_ADDR, SZ_16K, MX50_INT_GPIO3_LOW, MX50_INT_GPIO3_HIGH);
+ mxc_register_gpio(3, MX50_GPIO4_BASE_ADDR, SZ_16K, MX50_INT_GPIO4_LOW, MX50_INT_GPIO4_HIGH);
+ mxc_register_gpio(4, MX50_GPIO5_BASE_ADDR, SZ_16K, MX50_INT_GPIO5_LOW, MX50_INT_GPIO5_HIGH);
+ mxc_register_gpio(5, MX50_GPIO6_BASE_ADDR, SZ_16K, MX50_INT_GPIO6_LOW, MX50_INT_GPIO6_HIGH);
}
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c
index ff55730..800bb8b2 100644
--- a/arch/arm/mach-mx5/mm.c
+++ b/arch/arm/mach-mx5/mm.c
@@ -69,8 +69,6 @@ void __init imx53_init_early(void)
mxc_arch_reset_init(MX53_IO_ADDRESS(MX53_WDOG1_BASE_ADDR));
}
-int imx51_register_gpios(void);
-
void __init mx51_init_irq(void)
{
unsigned long tzic_addr;
@@ -86,11 +84,8 @@ void __init mx51_init_irq(void)
panic("unable to map TZIC interrupt controller\n");
tzic_init_irq(tzic_virt);
- imx51_register_gpios();
}
-int imx53_register_gpios(void);
-
void __init mx53_init_irq(void)
{
unsigned long tzic_addr;
@@ -103,5 +98,23 @@ void __init mx53_init_irq(void)
panic("unable to map TZIC interrupt controller\n");
tzic_init_irq(tzic_virt);
- imx53_register_gpios();
+}
+
+void __init imx51_soc_init(void)
+{
+ mxc_register_gpio(0, MX51_GPIO1_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO1_LOW, MX51_MXC_INT_GPIO1_HIGH);
+ mxc_register_gpio(1, MX51_GPIO2_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO2_LOW, MX51_MXC_INT_GPIO2_HIGH);
+ mxc_register_gpio(2, MX51_GPIO3_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO3_LOW, MX51_MXC_INT_GPIO3_HIGH);
+ mxc_register_gpio(3, MX51_GPIO4_BASE_ADDR, SZ_16K, MX51_MXC_INT_GPIO4_LOW, MX51_MXC_INT_GPIO4_HIGH);
+}
+
+void __init imx53_soc_init(void)
+{
+ mxc_register_gpio(0, MX53_GPIO1_BASE_ADDR, SZ_16K, MX53_INT_GPIO1_LOW, MX53_INT_GPIO1_HIGH);
+ mxc_register_gpio(1, MX53_GPIO2_BASE_ADDR, SZ_16K, MX53_INT_GPIO2_LOW, MX53_INT_GPIO2_HIGH);
+ mxc_register_gpio(2, MX53_GPIO3_BASE_ADDR, SZ_16K, MX53_INT_GPIO3_LOW, MX53_INT_GPIO3_HIGH);
+ mxc_register_gpio(3, MX53_GPIO4_BASE_ADDR, SZ_16K, MX53_INT_GPIO4_LOW, MX53_INT_GPIO4_HIGH);
+ mxc_register_gpio(4, MX53_GPIO5_BASE_ADDR, SZ_16K, MX53_INT_GPIO5_LOW, MX53_INT_GPIO5_HIGH);
+ mxc_register_gpio(5, MX53_GPIO6_BASE_ADDR, SZ_16K, MX53_INT_GPIO6_LOW, MX53_INT_GPIO6_HIGH);
+ mxc_register_gpio(6, MX53_GPIO7_BASE_ADDR, SZ_16K, MX53_INT_GPIO7_LOW, MX53_INT_GPIO7_HIGH);
}
diff --git a/arch/arm/plat-mxc/devices.c b/arch/arm/plat-mxc/devices.c
index eee1b60..fb166b2 100644
--- a/arch/arm/plat-mxc/devices.c
+++ b/arch/arm/plat-mxc/devices.c
@@ -89,3 +89,14 @@ err:
return pdev;
}
+
+struct device mxc_aips_bus = {
+ .init_name = "mxc_aips",
+ .parent = &platform_bus,
+};
+
+static int __init mxc_device_init(void)
+{
+ return device_register(&mxc_aips_bus);
+}
+core_initcall(mxc_device_init);
diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile
index ad2922a..b41bf97 100644
--- a/arch/arm/plat-mxc/devices/Makefile
+++ b/arch/arm/plat-mxc/devices/Makefile
@@ -2,6 +2,7 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_FEC) += platform-fec.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_FSL_USB2_UDC) += platform-fsl-usb2-udc.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_GPIO_KEYS) += platform-gpio_keys.o
+obj-y += platform-gpio-mxc.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX21_HCD) += platform-imx21-hcd.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX2_WDT) += platform-imx2-wdt.o
obj-$(CONFIG_IMX_HAVE_PLATFORM_IMXDI_RTC) += platform-imxdi_rtc.o
diff --git a/arch/arm/plat-mxc/devices/platform-gpio-mxc.c b/arch/arm/plat-mxc/devices/platform-gpio-mxc.c
new file mode 100644
index 0000000..cf1b7fd
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-gpio-mxc.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2011 Linaro Limited
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+#include <mach/devices-common.h>
+
+struct platform_device *__init mxc_register_gpio(int id,
+ resource_size_t iobase, resource_size_t iosize, int irq, int irq_high)
+{
+ struct resource res[] = {
+ {
+ .start = iobase,
+ .end = iobase + iosize - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = irq,
+ .end = irq,
+ .flags = IORESOURCE_IRQ,
+ }, {
+ .start = irq_high,
+ .end = irq_high,
+ .flags = IORESOURCE_IRQ,
+ },
+ };
+
+ return platform_device_register_resndata(&mxc_aips_bus,
+ "gpio-mxc", id, res, ARRAY_SIZE(res), NULL, 0);
+}
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index da79918..1e1d476 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -43,6 +43,9 @@ extern void mx35_init_irq(void);
extern void mx50_init_irq(void);
extern void mx51_init_irq(void);
extern void mx53_init_irq(void);
+extern void imx50_soc_init(void);
+extern void imx51_soc_init(void);
+extern void imx53_soc_init(void);
extern void epit_timer_init(struct clk *timer_clk, void __iomem *base, int irq);
extern void mxc_timer_init(struct clk *timer_clk, void __iomem *, int);
extern int mx1_clocks_init(unsigned long fref);
@@ -55,7 +58,8 @@ extern int mx51_clocks_init(unsigned long ckil, unsigned long osc,
unsigned long ckih1, unsigned long ckih2);
extern int mx53_clocks_init(unsigned long ckil, unsigned long osc,
unsigned long ckih1, unsigned long ckih2);
-extern int mxc_register_gpios(void);
+extern struct platform_device *mxc_register_gpio(int id,
+ resource_size_t iobase, resource_size_t iosize, int irq, int irq_high);
extern int mxc_register_device(struct platform_device *pdev, void *data);
extern void mxc_set_cpu_type(unsigned int type);
extern void mxc_arch_reset_init(void __iomem *);
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index fa84773..03f6266 100644
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -10,6 +10,8 @@
#include <linux/platform_device.h>
#include <linux/init.h>
+extern struct device mxc_aips_bus;
+
struct platform_device *imx_add_platform_device_dmamask(
const char *name, int id,
const struct resource *res, unsigned int num_resources,
--
1.7.4.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 4/5] ARM: mxc: migrate mach-imx gpio driver to gpio-mxc
2011-06-04 11:47 [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio Shawn Guo
` (2 preceding siblings ...)
2011-06-04 11:47 ` [PATCH v3 3/5] ARM: mxc: migrate mach-mx5 gpio driver to gpio-mxc Shawn Guo
@ 2011-06-04 11:47 ` Shawn Guo
2011-06-04 11:47 ` [PATCH v3 5/5] ARM: mxc: remove plat-mxc/gpio driver Shawn Guo
4 siblings, 0 replies; 7+ messages in thread
From: Shawn Guo @ 2011-06-04 11:47 UTC (permalink / raw)
To: linux-kernel
Cc: grant.likely, arnd, olof, kernel, linux-arm-kernel, patches, Shawn Guo
It migrates mx1/mx21/mx25/mx27/mx31/mx35 gpio driver to
drivers/gpio/gpio-mxc.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
---
arch/arm/mach-imx/mach-apf9328.c | 2 ++
arch/arm/mach-imx/mach-armadillo5x0.c | 2 ++
arch/arm/mach-imx/mach-bug.c | 2 ++
arch/arm/mach-imx/mach-cpuimx27.c | 2 ++
arch/arm/mach-imx/mach-cpuimx35.c | 2 ++
arch/arm/mach-imx/mach-eukrea_cpuimx25.c | 2 ++
arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 2 ++
arch/arm/mach-imx/mach-imx27ipcam.c | 2 ++
arch/arm/mach-imx/mach-imx27lite.c | 2 ++
arch/arm/mach-imx/mach-kzm_arm11_01.c | 2 ++
arch/arm/mach-imx/mach-mx1ads.c | 2 ++
arch/arm/mach-imx/mach-mx21ads.c | 2 ++
arch/arm/mach-imx/mach-mx25_3ds.c | 2 ++
arch/arm/mach-imx/mach-mx27_3ds.c | 2 ++
arch/arm/mach-imx/mach-mx27ads.c | 2 ++
arch/arm/mach-imx/mach-mx31_3ds.c | 2 ++
arch/arm/mach-imx/mach-mx31ads.c | 2 ++
arch/arm/mach-imx/mach-mx31lilly.c | 2 ++
arch/arm/mach-imx/mach-mx31lite.c | 2 ++
arch/arm/mach-imx/mach-mx31moboard.c | 2 ++
arch/arm/mach-imx/mach-mx35_3ds.c | 2 ++
arch/arm/mach-imx/mach-mxt_td60.c | 2 ++
arch/arm/mach-imx/mach-pca100.c | 2 ++
arch/arm/mach-imx/mach-pcm037.c | 2 ++
arch/arm/mach-imx/mach-pcm038.c | 2 ++
arch/arm/mach-imx/mach-pcm043.c | 2 ++
arch/arm/mach-imx/mach-qong.c | 2 ++
arch/arm/mach-imx/mach-scb9328.c | 2 ++
arch/arm/mach-imx/mach-vpr200.c | 2 ++
arch/arm/mach-imx/mm-imx1.c | 17 ++++++++---------
arch/arm/mach-imx/mm-imx21.c | 21 ++++++++++-----------
arch/arm/mach-imx/mm-imx25.c | 16 +++++++---------
arch/arm/mach-imx/mm-imx27.c | 21 ++++++++++-----------
arch/arm/mach-imx/mm-imx31.c | 15 +++++++--------
arch/arm/mach-imx/mm-imx35.c | 15 +++++++--------
arch/arm/plat-mxc/include/mach/common.h | 6 ++++++
36 files changed, 113 insertions(+), 56 deletions(-)
diff --git a/arch/arm/mach-imx/mach-apf9328.c b/arch/arm/mach-imx/mach-apf9328.c
index 15e45c8..59d2a3b 100644
--- a/arch/arm/mach-imx/mach-apf9328.c
+++ b/arch/arm/mach-imx/mach-apf9328.c
@@ -115,6 +115,8 @@ static struct platform_device *devices[] __initdata = {
static void __init apf9328_init(void)
{
+ imx1_soc_init();
+
mxc_gpio_setup_multiple_pins(apf9328_pins,
ARRAY_SIZE(apf9328_pins),
"APF9328");
diff --git a/arch/arm/mach-imx/mach-armadillo5x0.c b/arch/arm/mach-imx/mach-armadillo5x0.c
index ffb40ff..ede2710 100644
--- a/arch/arm/mach-imx/mach-armadillo5x0.c
+++ b/arch/arm/mach-imx/mach-armadillo5x0.c
@@ -490,6 +490,8 @@ static struct platform_device *devices[] __initdata = {
*/
static void __init armadillo5x0_init(void)
{
+ imx31_soc_init();
+
mxc_iomux_setup_multiple_pins(armadillo5x0_pins,
ARRAY_SIZE(armadillo5x0_pins), "armadillo5x0");
diff --git a/arch/arm/mach-imx/mach-bug.c b/arch/arm/mach-imx/mach-bug.c
index 42e4f07..f494705 100644
--- a/arch/arm/mach-imx/mach-bug.c
+++ b/arch/arm/mach-imx/mach-bug.c
@@ -42,6 +42,8 @@ static const unsigned int bug_pins[] __initconst = {
static void __init bug_board_init(void)
{
+ imx31_soc_init();
+
mxc_iomux_setup_multiple_pins(bug_pins,
ARRAY_SIZE(bug_pins), "uart-4");
imx31_add_imx_uart4(&uart_pdata);
diff --git a/arch/arm/mach-imx/mach-cpuimx27.c b/arch/arm/mach-imx/mach-cpuimx27.c
index 46a2e41..87887ac 100644
--- a/arch/arm/mach-imx/mach-cpuimx27.c
+++ b/arch/arm/mach-imx/mach-cpuimx27.c
@@ -250,6 +250,8 @@ __setup("otg_mode=", eukrea_cpuimx27_otg_mode);
static void __init eukrea_cpuimx27_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(eukrea_cpuimx27_pins,
ARRAY_SIZE(eukrea_cpuimx27_pins), "CPUIMX27");
diff --git a/arch/arm/mach-imx/mach-cpuimx35.c b/arch/arm/mach-imx/mach-cpuimx35.c
index 3f8ef82..f39a478b 100644
--- a/arch/arm/mach-imx/mach-cpuimx35.c
+++ b/arch/arm/mach-imx/mach-cpuimx35.c
@@ -156,6 +156,8 @@ __setup("otg_mode=", eukrea_cpuimx35_otg_mode);
*/
static void __init eukrea_cpuimx35_init(void)
{
+ imx35_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx35_pads,
ARRAY_SIZE(eukrea_cpuimx35_pads));
diff --git a/arch/arm/mach-imx/mach-eukrea_cpuimx25.c b/arch/arm/mach-imx/mach-eukrea_cpuimx25.c
index 148cff2..da36da5 100644
--- a/arch/arm/mach-imx/mach-eukrea_cpuimx25.c
+++ b/arch/arm/mach-imx/mach-eukrea_cpuimx25.c
@@ -125,6 +125,8 @@ __setup("otg_mode=", eukrea_cpuimx25_otg_mode);
static void __init eukrea_cpuimx25_init(void)
{
+ imx25_soc_init();
+
if (mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx25_pads,
ARRAY_SIZE(eukrea_cpuimx25_pads)))
printk(KERN_ERR "error setting cpuimx25 pads !\n");
diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
index 7ae43b1..c6269d6 100644
--- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
@@ -231,6 +231,8 @@ static void __init visstrim_m10_board_init(void)
{
int ret;
+ imx27_soc_init();
+
ret = mxc_gpio_setup_multiple_pins(visstrim_m10_pins,
ARRAY_SIZE(visstrim_m10_pins), "VISSTRIM_M10");
if (ret)
diff --git a/arch/arm/mach-imx/mach-imx27ipcam.c b/arch/arm/mach-imx/mach-imx27ipcam.c
index 9be6cd6..272f793 100644
--- a/arch/arm/mach-imx/mach-imx27ipcam.c
+++ b/arch/arm/mach-imx/mach-imx27ipcam.c
@@ -50,6 +50,8 @@ static const int mx27ipcam_pins[] __initconst = {
static void __init mx27ipcam_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(mx27ipcam_pins, ARRAY_SIZE(mx27ipcam_pins),
"mx27ipcam");
diff --git a/arch/arm/mach-imx/mach-imx27lite.c b/arch/arm/mach-imx/mach-imx27lite.c
index 8411405..d81a769 100644
--- a/arch/arm/mach-imx/mach-imx27lite.c
+++ b/arch/arm/mach-imx/mach-imx27lite.c
@@ -59,6 +59,8 @@ static const struct imxuart_platform_data uart_pdata __initconst = {
static void __init mx27lite_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(mx27lite_pins, ARRAY_SIZE(mx27lite_pins),
"imx27lite");
imx27_add_imx_uart0(&uart_pdata);
diff --git a/arch/arm/mach-imx/mach-kzm_arm11_01.c b/arch/arm/mach-imx/mach-kzm_arm11_01.c
index 1ecae20..e472a1d 100644
--- a/arch/arm/mach-imx/mach-kzm_arm11_01.c
+++ b/arch/arm/mach-imx/mach-kzm_arm11_01.c
@@ -223,6 +223,8 @@ static int kzm_pins[] __initdata = {
*/
static void __init kzm_board_init(void)
{
+ imx31_soc_init();
+
mxc_iomux_setup_multiple_pins(kzm_pins,
ARRAY_SIZE(kzm_pins), "kzm");
kzm_init_ext_uart();
diff --git a/arch/arm/mach-imx/mach-mx1ads.c b/arch/arm/mach-imx/mach-mx1ads.c
index 38ec5cb..5cd8bee 100644
--- a/arch/arm/mach-imx/mach-mx1ads.c
+++ b/arch/arm/mach-imx/mach-mx1ads.c
@@ -115,6 +115,8 @@ static struct i2c_board_info mx1ads_i2c_devices[] = {
*/
static void __init mx1ads_init(void)
{
+ imx1_soc_init();
+
mxc_gpio_setup_multiple_pins(mx1ads_pins,
ARRAY_SIZE(mx1ads_pins), "mx1ads");
diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c
index 74ac889..d389ecf 100644
--- a/arch/arm/mach-imx/mach-mx21ads.c
+++ b/arch/arm/mach-imx/mach-mx21ads.c
@@ -279,6 +279,8 @@ static struct platform_device *platform_devices[] __initdata = {
static void __init mx21ads_board_init(void)
{
+ imx21_soc_init();
+
mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
"mx21ads");
diff --git a/arch/arm/mach-imx/mach-mx25_3ds.c b/arch/arm/mach-imx/mach-mx25_3ds.c
index 58ea3fd..01534bb 100644
--- a/arch/arm/mach-imx/mach-mx25_3ds.c
+++ b/arch/arm/mach-imx/mach-mx25_3ds.c
@@ -219,6 +219,8 @@ static const struct esdhc_platform_data mx25pdk_esdhc_pdata __initconst = {
static void __init mx25pdk_init(void)
{
+ imx25_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx25pdk_pads,
ARRAY_SIZE(mx25pdk_pads));
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 6e1accf..117ce0a 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -267,6 +267,8 @@ static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
static void __init mx27pdk_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
"mx27pdk");
mx27_3ds_sdhc1_enable_level_translator();
diff --git a/arch/arm/mach-imx/mach-mx27ads.c b/arch/arm/mach-imx/mach-mx27ads.c
index 1db7950..fc26ed7 100644
--- a/arch/arm/mach-imx/mach-mx27ads.c
+++ b/arch/arm/mach-imx/mach-mx27ads.c
@@ -288,6 +288,8 @@ static const struct imxuart_platform_data uart_pdata __initconst = {
static void __init mx27ads_board_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(mx27ads_pins, ARRAY_SIZE(mx27ads_pins),
"mx27ads");
diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c
index 9b98244..ab2a626 100644
--- a/arch/arm/mach-imx/mach-mx31_3ds.c
+++ b/arch/arm/mach-imx/mach-mx31_3ds.c
@@ -689,6 +689,8 @@ static void __init mx31_3ds_init(void)
{
int ret;
+ imx31_soc_init();
+
mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
"mx31_3ds");
diff --git a/arch/arm/mach-imx/mach-mx31ads.c b/arch/arm/mach-imx/mach-mx31ads.c
index f4dee02..0ce4947 100644
--- a/arch/arm/mach-imx/mach-mx31ads.c
+++ b/arch/arm/mach-imx/mach-mx31ads.c
@@ -516,6 +516,8 @@ static void __init mx31ads_init_irq(void)
static void __init mx31ads_init(void)
{
+ imx31_soc_init();
+
mxc_init_extuart();
mxc_init_imx_uart();
mxc_init_i2c();
diff --git a/arch/arm/mach-imx/mach-mx31lilly.c b/arch/arm/mach-imx/mach-mx31lilly.c
index 410e676..750368d 100644
--- a/arch/arm/mach-imx/mach-mx31lilly.c
+++ b/arch/arm/mach-imx/mach-mx31lilly.c
@@ -243,6 +243,8 @@ core_param(mx31lilly_baseboard, mx31lilly_baseboard, int, 0444);
static void __init mx31lilly_board_init(void)
{
+ imx31_soc_init();
+
switch (mx31lilly_baseboard) {
case MX31LILLY_NOBOARD:
break;
diff --git a/arch/arm/mach-imx/mach-mx31lite.c b/arch/arm/mach-imx/mach-mx31lite.c
index ac9b4ca..4b47fd9 100644
--- a/arch/arm/mach-imx/mach-mx31lite.c
+++ b/arch/arm/mach-imx/mach-mx31lite.c
@@ -230,6 +230,8 @@ static void __init mx31lite_init(void)
{
int ret;
+ imx31_soc_init();
+
switch (mx31lite_baseboard) {
case MX31LITE_NOBOARD:
break;
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index eaa51e4..a52fd36 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c
@@ -507,6 +507,8 @@ core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
*/
static void __init mx31moboard_init(void)
{
+ imx31_soc_init();
+
mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
"moboard");
diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c
index 882880a..48b3c6f 100644
--- a/arch/arm/mach-imx/mach-mx35_3ds.c
+++ b/arch/arm/mach-imx/mach-mx35_3ds.c
@@ -179,6 +179,8 @@ static const struct imxi2c_platform_data mx35_3ds_i2c0_data __initconst = {
*/
static void __init mx35_3ds_init(void)
{
+ imx35_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(mx35pdk_pads, ARRAY_SIZE(mx35pdk_pads));
imx35_add_fec(NULL);
diff --git a/arch/arm/mach-imx/mach-mxt_td60.c b/arch/arm/mach-imx/mach-mxt_td60.c
index 2774541..c85876f 100644
--- a/arch/arm/mach-imx/mach-mxt_td60.c
+++ b/arch/arm/mach-imx/mach-mxt_td60.c
@@ -233,6 +233,8 @@ static const struct imxuart_platform_data uart_pdata __initconst = {
static void __init mxt_td60_board_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(mxt_td60_pins, ARRAY_SIZE(mxt_td60_pins),
"MXT_TD60");
diff --git a/arch/arm/mach-imx/mach-pca100.c b/arch/arm/mach-imx/mach-pca100.c
index bbddc5a..71083aa 100644
--- a/arch/arm/mach-imx/mach-pca100.c
+++ b/arch/arm/mach-imx/mach-pca100.c
@@ -357,6 +357,8 @@ static void __init pca100_init(void)
{
int ret;
+ imx27_soc_init();
+
/* SSI unit */
mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
MXC_AUDMUX_V1_PCR_SYN | /* 4wire mode */
diff --git a/arch/arm/mach-imx/mach-pcm037.c b/arch/arm/mach-imx/mach-pcm037.c
index 89c213b..f45b7cd 100644
--- a/arch/arm/mach-imx/mach-pcm037.c
+++ b/arch/arm/mach-imx/mach-pcm037.c
@@ -576,6 +576,8 @@ static void __init pcm037_init(void)
{
int ret;
+ imx31_soc_init();
+
mxc_iomux_set_gpr(MUX_PGP_UH2, 1);
mxc_iomux_setup_multiple_pins(pcm037_pins, ARRAY_SIZE(pcm037_pins),
diff --git a/arch/arm/mach-imx/mach-pcm038.c b/arch/arm/mach-imx/mach-pcm038.c
index 853bb87..2d6a64b 100644
--- a/arch/arm/mach-imx/mach-pcm038.c
+++ b/arch/arm/mach-imx/mach-pcm038.c
@@ -295,6 +295,8 @@ static const struct mxc_usbh_platform_data usbh2_pdata __initconst = {
static void __init pcm038_init(void)
{
+ imx27_soc_init();
+
mxc_gpio_setup_multiple_pins(pcm038_pins, ARRAY_SIZE(pcm038_pins),
"PCM038");
diff --git a/arch/arm/mach-imx/mach-pcm043.c b/arch/arm/mach-imx/mach-pcm043.c
index 0264416..163cc31 100644
--- a/arch/arm/mach-imx/mach-pcm043.c
+++ b/arch/arm/mach-imx/mach-pcm043.c
@@ -356,6 +356,8 @@ static struct esdhc_platform_data sd1_pdata = {
*/
static void __init pcm043_init(void)
{
+ imx35_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(pcm043_pads, ARRAY_SIZE(pcm043_pads));
mxc_audmux_v2_configure_port(3,
diff --git a/arch/arm/mach-imx/mach-qong.c b/arch/arm/mach-imx/mach-qong.c
index c163287..3626f48 100644
--- a/arch/arm/mach-imx/mach-qong.c
+++ b/arch/arm/mach-imx/mach-qong.c
@@ -244,6 +244,8 @@ static void __init qong_init_fpga(void)
*/
static void __init qong_init(void)
{
+ imx31_soc_init();
+
mxc_init_imx_uart();
qong_init_nor_mtd();
qong_init_fpga();
diff --git a/arch/arm/mach-imx/mach-scb9328.c b/arch/arm/mach-imx/mach-scb9328.c
index dcaee04..8280526 100644
--- a/arch/arm/mach-imx/mach-scb9328.c
+++ b/arch/arm/mach-imx/mach-scb9328.c
@@ -129,6 +129,8 @@ static struct platform_device *devices[] __initdata = {
*/
static void __init scb9328_init(void)
{
+ imx1_soc_init();
+
imx1_add_imx_uart0(&uart_pdata);
printk(KERN_INFO"Scb9328: Adding devices\n");
diff --git a/arch/arm/mach-imx/mach-vpr200.c b/arch/arm/mach-imx/mach-vpr200.c
index d74e347..7d8e012 100644
--- a/arch/arm/mach-imx/mach-vpr200.c
+++ b/arch/arm/mach-imx/mach-vpr200.c
@@ -267,6 +267,8 @@ static struct platform_device *devices[] __initdata = {
*/
static void __init vpr200_board_init(void)
{
+ imx35_soc_init();
+
mxc_iomux_v3_setup_multiple_pads(vpr200_pads, ARRAY_SIZE(vpr200_pads));
imx35_add_fec(NULL);
diff --git a/arch/arm/mach-imx/mm-imx1.c b/arch/arm/mach-imx/mm-imx1.c
index 2e482ba..b486595 100644
--- a/arch/arm/mach-imx/mm-imx1.c
+++ b/arch/arm/mach-imx/mm-imx1.c
@@ -23,7 +23,6 @@
#include <mach/common.h>
#include <mach/hardware.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
#include <mach/iomux-v1.h>
@@ -44,15 +43,15 @@ void __init imx1_init_early(void)
MX1_NUM_GPIO_PORT);
}
-static struct mxc_gpio_port imx1_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ(MX1, 0, 1, MX1_GPIO_INT_PORTA),
- DEFINE_IMX_GPIO_PORT_IRQ(MX1, 1, 2, MX1_GPIO_INT_PORTB),
- DEFINE_IMX_GPIO_PORT_IRQ(MX1, 2, 3, MX1_GPIO_INT_PORTC),
- DEFINE_IMX_GPIO_PORT_IRQ(MX1, 3, 4, MX1_GPIO_INT_PORTD),
-};
-
void __init mx1_init_irq(void)
{
mxc_init_irq(MX1_IO_ADDRESS(MX1_AVIC_BASE_ADDR));
- mxc_gpio_init(imx1_gpio_ports, ARRAY_SIZE(imx1_gpio_ports));
+}
+
+void __init imx1_soc_init(void)
+{
+ mxc_register_gpio(0, MX1_GPIO1_BASE_ADDR, SZ_4K, MX1_GPIO_INT_PORTA, 0);
+ mxc_register_gpio(1, MX1_GPIO2_BASE_ADDR, SZ_4K, MX1_GPIO_INT_PORTB, 0);
+ mxc_register_gpio(2, MX1_GPIO3_BASE_ADDR, SZ_4K, MX1_GPIO_INT_PORTC, 0);
+ mxc_register_gpio(3, MX1_GPIO4_BASE_ADDR, SZ_4K, MX1_GPIO_INT_PORTD, 0);
}
diff --git a/arch/arm/mach-imx/mm-imx21.c b/arch/arm/mach-imx/mm-imx21.c
index 7a0c500..f0fb8bc 100644
--- a/arch/arm/mach-imx/mm-imx21.c
+++ b/arch/arm/mach-imx/mm-imx21.c
@@ -24,7 +24,6 @@
#include <mach/common.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
#include <mach/iomux-v1.h>
@@ -70,17 +69,17 @@ void __init imx21_init_early(void)
MX21_NUM_GPIO_PORT);
}
-static struct mxc_gpio_port imx21_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ(MX21, 0, 1, MX21_INT_GPIO),
- DEFINE_IMX_GPIO_PORT(MX21, 1, 2),
- DEFINE_IMX_GPIO_PORT(MX21, 2, 3),
- DEFINE_IMX_GPIO_PORT(MX21, 3, 4),
- DEFINE_IMX_GPIO_PORT(MX21, 4, 5),
- DEFINE_IMX_GPIO_PORT(MX21, 5, 6),
-};
-
void __init mx21_init_irq(void)
{
mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
- mxc_gpio_init(imx21_gpio_ports, ARRAY_SIZE(imx21_gpio_ports));
+}
+
+void __init imx21_soc_init(void)
+{
+ mxc_register_gpio(0, MX21_GPIO1_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
+ mxc_register_gpio(1, MX21_GPIO2_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
+ mxc_register_gpio(2, MX21_GPIO3_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
+ mxc_register_gpio(3, MX21_GPIO4_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
+ mxc_register_gpio(4, MX21_GPIO5_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
+ mxc_register_gpio(5, MX21_GPIO6_BASE_ADDR, SZ_4K, MX21_INT_GPIO, 0);
}
diff --git a/arch/arm/mach-imx/mm-imx25.c b/arch/arm/mach-imx/mm-imx25.c
index 02f7b5c..1b6d583 100644
--- a/arch/arm/mach-imx/mm-imx25.c
+++ b/arch/arm/mach-imx/mm-imx25.c
@@ -27,7 +27,6 @@
#include <mach/hardware.h>
#include <mach/mx25.h>
#include <mach/iomux-v3.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
/*
@@ -57,16 +56,15 @@ void __init imx25_init_early(void)
mxc_arch_reset_init(MX25_IO_ADDRESS(MX25_WDOG_BASE_ADDR));
}
-static struct mxc_gpio_port imx25_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ(MX25, 0, 1, MX25_INT_GPIO1),
- DEFINE_IMX_GPIO_PORT_IRQ(MX25, 1, 2, MX25_INT_GPIO2),
- DEFINE_IMX_GPIO_PORT_IRQ(MX25, 2, 3, MX25_INT_GPIO3),
- DEFINE_IMX_GPIO_PORT_IRQ(MX25, 3, 4, MX25_INT_GPIO4),
-};
-
void __init mx25_init_irq(void)
{
mxc_init_irq(MX25_IO_ADDRESS(MX25_AVIC_BASE_ADDR));
- mxc_gpio_init(imx25_gpio_ports, ARRAY_SIZE(imx25_gpio_ports));
}
+void __init imx25_soc_init(void)
+{
+ mxc_register_gpio(0, MX25_GPIO1_BASE_ADDR, SZ_16K, MX25_INT_GPIO1, 0);
+ mxc_register_gpio(1, MX25_GPIO2_BASE_ADDR, SZ_16K, MX25_INT_GPIO2, 0);
+ mxc_register_gpio(2, MX25_GPIO3_BASE_ADDR, SZ_16K, MX25_INT_GPIO3, 0);
+ mxc_register_gpio(3, MX25_GPIO4_BASE_ADDR, SZ_16K, MX25_INT_GPIO4, 0);
+}
diff --git a/arch/arm/mach-imx/mm-imx27.c b/arch/arm/mach-imx/mm-imx27.c
index a6761a3..d3700ce 100644
--- a/arch/arm/mach-imx/mm-imx27.c
+++ b/arch/arm/mach-imx/mm-imx27.c
@@ -24,7 +24,6 @@
#include <mach/common.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
#include <mach/iomux-v1.h>
@@ -70,17 +69,17 @@ void __init imx27_init_early(void)
MX27_NUM_GPIO_PORT);
}
-static struct mxc_gpio_port imx27_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ(MX27, 0, 1, MX27_INT_GPIO),
- DEFINE_IMX_GPIO_PORT(MX27, 1, 2),
- DEFINE_IMX_GPIO_PORT(MX27, 2, 3),
- DEFINE_IMX_GPIO_PORT(MX27, 3, 4),
- DEFINE_IMX_GPIO_PORT(MX27, 4, 5),
- DEFINE_IMX_GPIO_PORT(MX27, 5, 6),
-};
-
void __init mx27_init_irq(void)
{
mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
- mxc_gpio_init(imx27_gpio_ports, ARRAY_SIZE(imx27_gpio_ports));
+}
+
+void __init imx27_soc_init(void)
+{
+ mxc_register_gpio(0, MX27_GPIO1_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
+ mxc_register_gpio(1, MX27_GPIO2_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
+ mxc_register_gpio(2, MX27_GPIO3_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
+ mxc_register_gpio(3, MX27_GPIO4_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
+ mxc_register_gpio(4, MX27_GPIO5_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
+ mxc_register_gpio(5, MX27_GPIO6_BASE_ADDR, SZ_4K, MX27_INT_GPIO, 0);
}
diff --git a/arch/arm/mach-imx/mm-imx31.c b/arch/arm/mach-imx/mm-imx31.c
index 86b9b45..cb16ac6 100644
--- a/arch/arm/mach-imx/mm-imx31.c
+++ b/arch/arm/mach-imx/mm-imx31.c
@@ -26,7 +26,6 @@
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-v3.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
static struct map_desc mx31_io_desc[] __initdata = {
@@ -53,14 +52,14 @@ void __init imx31_init_early(void)
mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
}
-static struct mxc_gpio_port imx31_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ(MX31, 0, 1, MX31_INT_GPIO1),
- DEFINE_IMX_GPIO_PORT_IRQ(MX31, 1, 2, MX31_INT_GPIO2),
- DEFINE_IMX_GPIO_PORT_IRQ(MX31, 2, 3, MX31_INT_GPIO3),
-};
-
void __init mx31_init_irq(void)
{
mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
- mxc_gpio_init(imx31_gpio_ports, ARRAY_SIZE(imx31_gpio_ports));
+}
+
+void __init imx31_soc_init(void)
+{
+ mxc_register_gpio(0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
+ mxc_register_gpio(1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
+ mxc_register_gpio(2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
}
diff --git a/arch/arm/mach-imx/mm-imx35.c b/arch/arm/mach-imx/mm-imx35.c
index c880e6d..648bfca 100644
--- a/arch/arm/mach-imx/mm-imx35.c
+++ b/arch/arm/mach-imx/mm-imx35.c
@@ -27,7 +27,6 @@
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-v3.h>
-#include <mach/gpio.h>
#include <mach/irqs.h>
static struct map_desc mx35_io_desc[] __initdata = {
@@ -50,14 +49,14 @@ void __init imx35_init_early(void)
mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
}
-static struct mxc_gpio_port imx35_gpio_ports[] = {
- DEFINE_IMX_GPIO_PORT_IRQ(MX35, 0, 1, MX35_INT_GPIO1),
- DEFINE_IMX_GPIO_PORT_IRQ(MX35, 1, 2, MX35_INT_GPIO2),
- DEFINE_IMX_GPIO_PORT_IRQ(MX35, 2, 3, MX35_INT_GPIO3),
-};
-
void __init mx35_init_irq(void)
{
mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
- mxc_gpio_init(imx35_gpio_ports, ARRAY_SIZE(imx35_gpio_ports));
+}
+
+void __init imx35_soc_init(void)
+{
+ mxc_register_gpio(0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
+ mxc_register_gpio(1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
+ mxc_register_gpio(2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
}
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 1e1d476..91fa263 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -43,6 +43,12 @@ extern void mx35_init_irq(void);
extern void mx50_init_irq(void);
extern void mx51_init_irq(void);
extern void mx53_init_irq(void);
+extern void imx1_soc_init(void);
+extern void imx21_soc_init(void);
+extern void imx25_soc_init(void);
+extern void imx27_soc_init(void);
+extern void imx31_soc_init(void);
+extern void imx35_soc_init(void);
extern void imx50_soc_init(void);
extern void imx51_soc_init(void);
extern void imx53_soc_init(void);
--
1.7.4.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH v3 5/5] ARM: mxc: remove plat-mxc/gpio driver
2011-06-04 11:47 [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio Shawn Guo
` (3 preceding siblings ...)
2011-06-04 11:47 ` [PATCH v3 4/5] ARM: mxc: migrate mach-imx " Shawn Guo
@ 2011-06-04 11:47 ` Shawn Guo
4 siblings, 0 replies; 7+ messages in thread
From: Shawn Guo @ 2011-06-04 11:47 UTC (permalink / raw)
To: linux-kernel
Cc: grant.likely, arnd, olof, kernel, linux-arm-kernel, patches, Shawn Guo
With all users of plat-mxc/gpio migrated to drivers/gpio/gpio-mxc,
plat-mxc/gpio can be removed now. And plat-mxc/include/mach/gpio.h
can also be cleaned up as below.
* Remove the helper macros for gpio ports definition
* Move "struct mxc_gpio_port" into drivers/gpio/gpio-mxc.c, as it's
not needed to be public at all
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
---
arch/arm/plat-mxc/Makefile | 2 +-
arch/arm/plat-mxc/gpio.c | 361 ---------------------------------
arch/arm/plat-mxc/include/mach/gpio.h | 28 ---
drivers/gpio/gpio-mxc.c | 11 +
4 files changed, 12 insertions(+), 390 deletions(-)
delete mode 100644 arch/arm/plat-mxc/gpio.c
diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile
index a138787..d53c35f 100644
--- a/arch/arm/plat-mxc/Makefile
+++ b/arch/arm/plat-mxc/Makefile
@@ -3,7 +3,7 @@
#
# Common support
-obj-y := clock.o gpio.o time.o devices.o cpu.o system.o irq-common.o
+obj-y := clock.o time.o devices.o cpu.o system.o irq-common.o
# MX51 uses the TZIC interrupt controller, older platforms use AVIC
obj-$(CONFIG_MXC_TZIC) += tzic.o
diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c
deleted file mode 100644
index 6cd6d7f..0000000
--- a/arch/arm/plat-mxc/gpio.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
- * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
- *
- * Based on code from Freescale,
- * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <mach/hardware.h>
-#include <asm-generic/bug.h>
-
-static struct mxc_gpio_port *mxc_gpio_ports;
-static int gpio_table_size;
-
-#define cpu_is_mx1_mx2() (cpu_is_mx1() || cpu_is_mx2())
-
-#define GPIO_DR (cpu_is_mx1_mx2() ? 0x1c : 0x00)
-#define GPIO_GDIR (cpu_is_mx1_mx2() ? 0x00 : 0x04)
-#define GPIO_PSR (cpu_is_mx1_mx2() ? 0x24 : 0x08)
-#define GPIO_ICR1 (cpu_is_mx1_mx2() ? 0x28 : 0x0C)
-#define GPIO_ICR2 (cpu_is_mx1_mx2() ? 0x2C : 0x10)
-#define GPIO_IMR (cpu_is_mx1_mx2() ? 0x30 : 0x14)
-#define GPIO_ISR (cpu_is_mx1_mx2() ? 0x34 : 0x18)
-
-#define GPIO_INT_LOW_LEV (cpu_is_mx1_mx2() ? 0x3 : 0x0)
-#define GPIO_INT_HIGH_LEV (cpu_is_mx1_mx2() ? 0x2 : 0x1)
-#define GPIO_INT_RISE_EDGE (cpu_is_mx1_mx2() ? 0x0 : 0x2)
-#define GPIO_INT_FALL_EDGE (cpu_is_mx1_mx2() ? 0x1 : 0x3)
-#define GPIO_INT_NONE 0x4
-
-/* Note: This driver assumes 32 GPIOs are handled in one register */
-
-static void _clear_gpio_irqstatus(struct mxc_gpio_port *port, u32 index)
-{
- __raw_writel(1 << index, port->base + GPIO_ISR);
-}
-
-static void _set_gpio_irqenable(struct mxc_gpio_port *port, u32 index,
- int enable)
-{
- u32 l;
-
- l = __raw_readl(port->base + GPIO_IMR);
- l = (l & (~(1 << index))) | (!!enable << index);
- __raw_writel(l, port->base + GPIO_IMR);
-}
-
-static void gpio_ack_irq(struct irq_data *d)
-{
- u32 gpio = irq_to_gpio(d->irq);
- _clear_gpio_irqstatus(&mxc_gpio_ports[gpio / 32], gpio & 0x1f);
-}
-
-static void gpio_mask_irq(struct irq_data *d)
-{
- u32 gpio = irq_to_gpio(d->irq);
- _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 0);
-}
-
-static void gpio_unmask_irq(struct irq_data *d)
-{
- u32 gpio = irq_to_gpio(d->irq);
- _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 1);
-}
-
-static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset);
-
-static int gpio_set_irq_type(struct irq_data *d, u32 type)
-{
- u32 gpio = irq_to_gpio(d->irq);
- struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
- u32 bit, val;
- int edge;
- void __iomem *reg = port->base;
-
- port->both_edges &= ~(1 << (gpio & 31));
- switch (type) {
- case IRQ_TYPE_EDGE_RISING:
- edge = GPIO_INT_RISE_EDGE;
- break;
- case IRQ_TYPE_EDGE_FALLING:
- edge = GPIO_INT_FALL_EDGE;
- break;
- case IRQ_TYPE_EDGE_BOTH:
- val = mxc_gpio_get(&port->chip, gpio & 31);
- if (val) {
- edge = GPIO_INT_LOW_LEV;
- pr_debug("mxc: set GPIO %d to low trigger\n", gpio);
- } else {
- edge = GPIO_INT_HIGH_LEV;
- pr_debug("mxc: set GPIO %d to high trigger\n", gpio);
- }
- port->both_edges |= 1 << (gpio & 31);
- break;
- case IRQ_TYPE_LEVEL_LOW:
- edge = GPIO_INT_LOW_LEV;
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- edge = GPIO_INT_HIGH_LEV;
- break;
- default:
- return -EINVAL;
- }
-
- reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
- bit = gpio & 0xf;
- val = __raw_readl(reg) & ~(0x3 << (bit << 1));
- __raw_writel(val | (edge << (bit << 1)), reg);
- _clear_gpio_irqstatus(port, gpio & 0x1f);
-
- return 0;
-}
-
-static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)
-{
- void __iomem *reg = port->base;
- u32 bit, val;
- int edge;
-
- reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
- bit = gpio & 0xf;
- val = __raw_readl(reg);
- edge = (val >> (bit << 1)) & 3;
- val &= ~(0x3 << (bit << 1));
- if (edge == GPIO_INT_HIGH_LEV) {
- edge = GPIO_INT_LOW_LEV;
- pr_debug("mxc: switch GPIO %d to low trigger\n", gpio);
- } else if (edge == GPIO_INT_LOW_LEV) {
- edge = GPIO_INT_HIGH_LEV;
- pr_debug("mxc: switch GPIO %d to high trigger\n", gpio);
- } else {
- pr_err("mxc: invalid configuration for GPIO %d: %x\n",
- gpio, edge);
- return;
- }
- __raw_writel(val | (edge << (bit << 1)), reg);
-}
-
-/* handle 32 interrupts in one status register */
-static void mxc_gpio_irq_handler(struct mxc_gpio_port *port, u32 irq_stat)
-{
- u32 gpio_irq_no_base = port->virtual_irq_start;
-
- while (irq_stat != 0) {
- int irqoffset = fls(irq_stat) - 1;
-
- if (port->both_edges & (1 << irqoffset))
- mxc_flip_edge(port, irqoffset);
-
- generic_handle_irq(gpio_irq_no_base + irqoffset);
-
- irq_stat &= ~(1 << irqoffset);
- }
-}
-
-/* MX1 and MX3 has one interrupt *per* gpio port */
-static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc)
-{
- u32 irq_stat;
- struct mxc_gpio_port *port = irq_get_handler_data(irq);
-
- irq_stat = __raw_readl(port->base + GPIO_ISR) &
- __raw_readl(port->base + GPIO_IMR);
-
- mxc_gpio_irq_handler(port, irq_stat);
-}
-
-/* MX2 has one interrupt *for all* gpio ports */
-static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc)
-{
- int i;
- u32 irq_msk, irq_stat;
- struct mxc_gpio_port *port = irq_get_handler_data(irq);
-
- /* walk through all interrupt status registers */
- for (i = 0; i < gpio_table_size; i++) {
- irq_msk = __raw_readl(port[i].base + GPIO_IMR);
- if (!irq_msk)
- continue;
-
- irq_stat = __raw_readl(port[i].base + GPIO_ISR) & irq_msk;
- if (irq_stat)
- mxc_gpio_irq_handler(&port[i], irq_stat);
- }
-}
-
-/*
- * Set interrupt number "irq" in the GPIO as a wake-up source.
- * While system is running, all registered GPIO interrupts need to have
- * wake-up enabled. When system is suspended, only selected GPIO interrupts
- * need to have wake-up enabled.
- * @param irq interrupt source number
- * @param enable enable as wake-up if equal to non-zero
- * @return This function returns 0 on success.
- */
-static int gpio_set_wake_irq(struct irq_data *d, u32 enable)
-{
- u32 gpio = irq_to_gpio(d->irq);
- u32 gpio_idx = gpio & 0x1F;
- struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
-
- if (enable) {
- if (port->irq_high && (gpio_idx >= 16))
- enable_irq_wake(port->irq_high);
- else
- enable_irq_wake(port->irq);
- } else {
- if (port->irq_high && (gpio_idx >= 16))
- disable_irq_wake(port->irq_high);
- else
- disable_irq_wake(port->irq);
- }
-
- return 0;
-}
-
-static struct irq_chip gpio_irq_chip = {
- .name = "GPIO",
- .irq_ack = gpio_ack_irq,
- .irq_mask = gpio_mask_irq,
- .irq_unmask = gpio_unmask_irq,
- .irq_set_type = gpio_set_irq_type,
- .irq_set_wake = gpio_set_wake_irq,
-};
-
-static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset,
- int dir)
-{
- struct mxc_gpio_port *port =
- container_of(chip, struct mxc_gpio_port, chip);
- u32 l;
- unsigned long flags;
-
- spin_lock_irqsave(&port->lock, flags);
- l = __raw_readl(port->base + GPIO_GDIR);
- if (dir)
- l |= 1 << offset;
- else
- l &= ~(1 << offset);
- __raw_writel(l, port->base + GPIO_GDIR);
- spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static void mxc_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
- struct mxc_gpio_port *port =
- container_of(chip, struct mxc_gpio_port, chip);
- void __iomem *reg = port->base + GPIO_DR;
- u32 l;
- unsigned long flags;
-
- spin_lock_irqsave(&port->lock, flags);
- l = (__raw_readl(reg) & (~(1 << offset))) | (!!value << offset);
- __raw_writel(l, reg);
- spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- struct mxc_gpio_port *port =
- container_of(chip, struct mxc_gpio_port, chip);
-
- return (__raw_readl(port->base + GPIO_PSR) >> offset) & 1;
-}
-
-static int mxc_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
- _set_gpio_direction(chip, offset, 0);
- return 0;
-}
-
-static int mxc_gpio_direction_output(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- mxc_gpio_set(chip, offset, value);
- _set_gpio_direction(chip, offset, 1);
- return 0;
-}
-
-/*
- * This lock class tells lockdep that GPIO irqs are in a different
- * category than their parents, so it won't report false recursion.
- */
-static struct lock_class_key gpio_lock_class;
-
-int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
-{
- int i, j;
-
- /* save for local usage */
- mxc_gpio_ports = port;
- gpio_table_size = cnt;
-
- printk(KERN_INFO "MXC GPIO hardware\n");
-
- for (i = 0; i < cnt; i++) {
- /* disable the interrupt and clear the status */
- __raw_writel(0, port[i].base + GPIO_IMR);
- __raw_writel(~0, port[i].base + GPIO_ISR);
- for (j = port[i].virtual_irq_start;
- j < port[i].virtual_irq_start + 32; j++) {
- irq_set_lockdep_class(j, &gpio_lock_class);
- irq_set_chip_and_handler(j, &gpio_irq_chip,
- handle_level_irq);
- set_irq_flags(j, IRQF_VALID);
- }
-
- /* register gpio chip */
- port[i].chip.direction_input = mxc_gpio_direction_input;
- port[i].chip.direction_output = mxc_gpio_direction_output;
- port[i].chip.get = mxc_gpio_get;
- port[i].chip.set = mxc_gpio_set;
- port[i].chip.base = i * 32;
- port[i].chip.ngpio = 32;
-
- spin_lock_init(&port[i].lock);
-
- /* its a serious configuration bug when it fails */
- BUG_ON( gpiochip_add(&port[i].chip) < 0 );
-
- if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
- /* setup one handler for each entry */
- irq_set_chained_handler(port[i].irq,
- mx3_gpio_irq_handler);
- irq_set_handler_data(port[i].irq, &port[i]);
- if (port[i].irq_high) {
- /* setup handler for GPIO 16 to 31 */
- irq_set_chained_handler(port[i].irq_high,
- mx3_gpio_irq_handler);
- irq_set_handler_data(port[i].irq_high,
- &port[i]);
- }
- }
- }
-
- if (cpu_is_mx2()) {
- /* setup one handler for all GPIO interrupts */
- irq_set_chained_handler(port[0].irq, mx2_gpio_irq_handler);
- irq_set_handler_data(port[0].irq, port);
- }
-
- return 0;
-}
diff --git a/arch/arm/plat-mxc/include/mach/gpio.h b/arch/arm/plat-mxc/include/mach/gpio.h
index f89252c..31c820c 100644
--- a/arch/arm/plat-mxc/include/mach/gpio.h
+++ b/arch/arm/plat-mxc/include/mach/gpio.h
@@ -36,32 +36,4 @@
#define gpio_to_irq(gpio) (MXC_GPIO_IRQ_START + (gpio))
#define irq_to_gpio(irq) ((irq) - MXC_GPIO_IRQ_START)
-struct mxc_gpio_port {
- struct list_head node;
- void __iomem *base;
- int irq;
- int irq_high;
- int virtual_irq_start;
- struct gpio_chip chip;
- u32 both_edges;
- spinlock_t lock;
-};
-
-#define DEFINE_IMX_GPIO_PORT_IRQ_HIGH(soc, _id, _hwid, _irq, _irq_high) \
- { \
- .chip.label = "gpio-" #_id, \
- .irq = _irq, \
- .irq_high = _irq_high, \
- .base = soc ## _IO_ADDRESS( \
- soc ## _GPIO ## _hwid ## _BASE_ADDR), \
- .virtual_irq_start = MXC_GPIO_IRQ_START + (_id) * 32, \
- }
-
-#define DEFINE_IMX_GPIO_PORT_IRQ(soc, _id, _hwid, _irq) \
- DEFINE_IMX_GPIO_PORT_IRQ_HIGH(soc, _id, _hwid, _irq, 0)
-#define DEFINE_IMX_GPIO_PORT(soc, _id, _hwid) \
- DEFINE_IMX_GPIO_PORT_IRQ(soc, _id, _hwid, 0)
-
-int mxc_gpio_init(struct mxc_gpio_port*, int);
-
#endif
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 0951983..844079a 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -29,6 +29,17 @@
#include <mach/hardware.h>
#include <asm-generic/bug.h>
+struct mxc_gpio_port {
+ struct list_head node;
+ void __iomem *base;
+ int irq;
+ int irq_high;
+ int virtual_irq_start;
+ struct gpio_chip chip;
+ u32 both_edges;
+ spinlock_t lock;
+};
+
/*
* MX2 has one interrupt *for all* gpio ports. The list is used
* to save the references to all ports, so that mx2_gpio_irq_handler
--
1.7.4.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c into drivers/gpio
2011-06-04 11:47 ` [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c " Shawn Guo
@ 2011-06-04 22:35 ` Grant Likely
0 siblings, 0 replies; 7+ messages in thread
From: Grant Likely @ 2011-06-04 22:35 UTC (permalink / raw)
To: Shawn Guo; +Cc: linux-kernel, arnd, olof, kernel, linux-arm-kernel, patches
On Sat, Jun 04, 2011 at 07:47:14PM +0800, Shawn Guo wrote:
> As the first patch of the series that moves plat-mxc gpio driver into
> drivers/gpio, it copies arch/arm/plat-mxc/gpio.c into
> drivers/gpio/gpio-mxc.c. The later patches will make necessary
> changes to the driver, migrate the existing users to it, and lastly
> deletes plat-mxc gpio driver.
>
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
> drivers/gpio/gpio-mxc.c | 361 +++++++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 361 insertions(+), 0 deletions(-)
> create mode 100644 drivers/gpio/gpio-mxc.c
Ditto to my comments on the gpio-mxs driver, I'd like you to rework
how the driver file is moved before it is modified.
g.
>
> diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
> new file mode 100644
> index 0000000..6cd6d7f
> --- /dev/null
> +++ b/drivers/gpio/gpio-mxc.c
> @@ -0,0 +1,361 @@
> +/*
> + * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
> + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
> + *
> + * Based on code from Freescale,
> + * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version 2
> + * of the License, or (at your option) any later version.
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/interrupt.h>
> +#include <linux/io.h>
> +#include <linux/irq.h>
> +#include <linux/gpio.h>
> +#include <mach/hardware.h>
> +#include <asm-generic/bug.h>
> +
> +static struct mxc_gpio_port *mxc_gpio_ports;
> +static int gpio_table_size;
> +
> +#define cpu_is_mx1_mx2() (cpu_is_mx1() || cpu_is_mx2())
> +
> +#define GPIO_DR (cpu_is_mx1_mx2() ? 0x1c : 0x00)
> +#define GPIO_GDIR (cpu_is_mx1_mx2() ? 0x00 : 0x04)
> +#define GPIO_PSR (cpu_is_mx1_mx2() ? 0x24 : 0x08)
> +#define GPIO_ICR1 (cpu_is_mx1_mx2() ? 0x28 : 0x0C)
> +#define GPIO_ICR2 (cpu_is_mx1_mx2() ? 0x2C : 0x10)
> +#define GPIO_IMR (cpu_is_mx1_mx2() ? 0x30 : 0x14)
> +#define GPIO_ISR (cpu_is_mx1_mx2() ? 0x34 : 0x18)
> +
> +#define GPIO_INT_LOW_LEV (cpu_is_mx1_mx2() ? 0x3 : 0x0)
> +#define GPIO_INT_HIGH_LEV (cpu_is_mx1_mx2() ? 0x2 : 0x1)
> +#define GPIO_INT_RISE_EDGE (cpu_is_mx1_mx2() ? 0x0 : 0x2)
> +#define GPIO_INT_FALL_EDGE (cpu_is_mx1_mx2() ? 0x1 : 0x3)
> +#define GPIO_INT_NONE 0x4
> +
> +/* Note: This driver assumes 32 GPIOs are handled in one register */
> +
> +static void _clear_gpio_irqstatus(struct mxc_gpio_port *port, u32 index)
> +{
> + __raw_writel(1 << index, port->base + GPIO_ISR);
> +}
> +
> +static void _set_gpio_irqenable(struct mxc_gpio_port *port, u32 index,
> + int enable)
> +{
> + u32 l;
> +
> + l = __raw_readl(port->base + GPIO_IMR);
> + l = (l & (~(1 << index))) | (!!enable << index);
> + __raw_writel(l, port->base + GPIO_IMR);
> +}
> +
> +static void gpio_ack_irq(struct irq_data *d)
> +{
> + u32 gpio = irq_to_gpio(d->irq);
> + _clear_gpio_irqstatus(&mxc_gpio_ports[gpio / 32], gpio & 0x1f);
> +}
> +
> +static void gpio_mask_irq(struct irq_data *d)
> +{
> + u32 gpio = irq_to_gpio(d->irq);
> + _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 0);
> +}
> +
> +static void gpio_unmask_irq(struct irq_data *d)
> +{
> + u32 gpio = irq_to_gpio(d->irq);
> + _set_gpio_irqenable(&mxc_gpio_ports[gpio / 32], gpio & 0x1f, 1);
> +}
> +
> +static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset);
> +
> +static int gpio_set_irq_type(struct irq_data *d, u32 type)
> +{
> + u32 gpio = irq_to_gpio(d->irq);
> + struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
> + u32 bit, val;
> + int edge;
> + void __iomem *reg = port->base;
> +
> + port->both_edges &= ~(1 << (gpio & 31));
> + switch (type) {
> + case IRQ_TYPE_EDGE_RISING:
> + edge = GPIO_INT_RISE_EDGE;
> + break;
> + case IRQ_TYPE_EDGE_FALLING:
> + edge = GPIO_INT_FALL_EDGE;
> + break;
> + case IRQ_TYPE_EDGE_BOTH:
> + val = mxc_gpio_get(&port->chip, gpio & 31);
> + if (val) {
> + edge = GPIO_INT_LOW_LEV;
> + pr_debug("mxc: set GPIO %d to low trigger\n", gpio);
> + } else {
> + edge = GPIO_INT_HIGH_LEV;
> + pr_debug("mxc: set GPIO %d to high trigger\n", gpio);
> + }
> + port->both_edges |= 1 << (gpio & 31);
> + break;
> + case IRQ_TYPE_LEVEL_LOW:
> + edge = GPIO_INT_LOW_LEV;
> + break;
> + case IRQ_TYPE_LEVEL_HIGH:
> + edge = GPIO_INT_HIGH_LEV;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
> + bit = gpio & 0xf;
> + val = __raw_readl(reg) & ~(0x3 << (bit << 1));
> + __raw_writel(val | (edge << (bit << 1)), reg);
> + _clear_gpio_irqstatus(port, gpio & 0x1f);
> +
> + return 0;
> +}
> +
> +static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)
> +{
> + void __iomem *reg = port->base;
> + u32 bit, val;
> + int edge;
> +
> + reg += GPIO_ICR1 + ((gpio & 0x10) >> 2); /* lower or upper register */
> + bit = gpio & 0xf;
> + val = __raw_readl(reg);
> + edge = (val >> (bit << 1)) & 3;
> + val &= ~(0x3 << (bit << 1));
> + if (edge == GPIO_INT_HIGH_LEV) {
> + edge = GPIO_INT_LOW_LEV;
> + pr_debug("mxc: switch GPIO %d to low trigger\n", gpio);
> + } else if (edge == GPIO_INT_LOW_LEV) {
> + edge = GPIO_INT_HIGH_LEV;
> + pr_debug("mxc: switch GPIO %d to high trigger\n", gpio);
> + } else {
> + pr_err("mxc: invalid configuration for GPIO %d: %x\n",
> + gpio, edge);
> + return;
> + }
> + __raw_writel(val | (edge << (bit << 1)), reg);
> +}
> +
> +/* handle 32 interrupts in one status register */
> +static void mxc_gpio_irq_handler(struct mxc_gpio_port *port, u32 irq_stat)
> +{
> + u32 gpio_irq_no_base = port->virtual_irq_start;
> +
> + while (irq_stat != 0) {
> + int irqoffset = fls(irq_stat) - 1;
> +
> + if (port->both_edges & (1 << irqoffset))
> + mxc_flip_edge(port, irqoffset);
> +
> + generic_handle_irq(gpio_irq_no_base + irqoffset);
> +
> + irq_stat &= ~(1 << irqoffset);
> + }
> +}
> +
> +/* MX1 and MX3 has one interrupt *per* gpio port */
> +static void mx3_gpio_irq_handler(u32 irq, struct irq_desc *desc)
> +{
> + u32 irq_stat;
> + struct mxc_gpio_port *port = irq_get_handler_data(irq);
> +
> + irq_stat = __raw_readl(port->base + GPIO_ISR) &
> + __raw_readl(port->base + GPIO_IMR);
> +
> + mxc_gpio_irq_handler(port, irq_stat);
> +}
> +
> +/* MX2 has one interrupt *for all* gpio ports */
> +static void mx2_gpio_irq_handler(u32 irq, struct irq_desc *desc)
> +{
> + int i;
> + u32 irq_msk, irq_stat;
> + struct mxc_gpio_port *port = irq_get_handler_data(irq);
> +
> + /* walk through all interrupt status registers */
> + for (i = 0; i < gpio_table_size; i++) {
> + irq_msk = __raw_readl(port[i].base + GPIO_IMR);
> + if (!irq_msk)
> + continue;
> +
> + irq_stat = __raw_readl(port[i].base + GPIO_ISR) & irq_msk;
> + if (irq_stat)
> + mxc_gpio_irq_handler(&port[i], irq_stat);
> + }
> +}
> +
> +/*
> + * Set interrupt number "irq" in the GPIO as a wake-up source.
> + * While system is running, all registered GPIO interrupts need to have
> + * wake-up enabled. When system is suspended, only selected GPIO interrupts
> + * need to have wake-up enabled.
> + * @param irq interrupt source number
> + * @param enable enable as wake-up if equal to non-zero
> + * @return This function returns 0 on success.
> + */
> +static int gpio_set_wake_irq(struct irq_data *d, u32 enable)
> +{
> + u32 gpio = irq_to_gpio(d->irq);
> + u32 gpio_idx = gpio & 0x1F;
> + struct mxc_gpio_port *port = &mxc_gpio_ports[gpio / 32];
> +
> + if (enable) {
> + if (port->irq_high && (gpio_idx >= 16))
> + enable_irq_wake(port->irq_high);
> + else
> + enable_irq_wake(port->irq);
> + } else {
> + if (port->irq_high && (gpio_idx >= 16))
> + disable_irq_wake(port->irq_high);
> + else
> + disable_irq_wake(port->irq);
> + }
> +
> + return 0;
> +}
> +
> +static struct irq_chip gpio_irq_chip = {
> + .name = "GPIO",
> + .irq_ack = gpio_ack_irq,
> + .irq_mask = gpio_mask_irq,
> + .irq_unmask = gpio_unmask_irq,
> + .irq_set_type = gpio_set_irq_type,
> + .irq_set_wake = gpio_set_wake_irq,
> +};
> +
> +static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset,
> + int dir)
> +{
> + struct mxc_gpio_port *port =
> + container_of(chip, struct mxc_gpio_port, chip);
> + u32 l;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&port->lock, flags);
> + l = __raw_readl(port->base + GPIO_GDIR);
> + if (dir)
> + l |= 1 << offset;
> + else
> + l &= ~(1 << offset);
> + __raw_writel(l, port->base + GPIO_GDIR);
> + spin_unlock_irqrestore(&port->lock, flags);
> +}
> +
> +static void mxc_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
> +{
> + struct mxc_gpio_port *port =
> + container_of(chip, struct mxc_gpio_port, chip);
> + void __iomem *reg = port->base + GPIO_DR;
> + u32 l;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&port->lock, flags);
> + l = (__raw_readl(reg) & (~(1 << offset))) | (!!value << offset);
> + __raw_writel(l, reg);
> + spin_unlock_irqrestore(&port->lock, flags);
> +}
> +
> +static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset)
> +{
> + struct mxc_gpio_port *port =
> + container_of(chip, struct mxc_gpio_port, chip);
> +
> + return (__raw_readl(port->base + GPIO_PSR) >> offset) & 1;
> +}
> +
> +static int mxc_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
> +{
> + _set_gpio_direction(chip, offset, 0);
> + return 0;
> +}
> +
> +static int mxc_gpio_direction_output(struct gpio_chip *chip,
> + unsigned offset, int value)
> +{
> + mxc_gpio_set(chip, offset, value);
> + _set_gpio_direction(chip, offset, 1);
> + return 0;
> +}
> +
> +/*
> + * This lock class tells lockdep that GPIO irqs are in a different
> + * category than their parents, so it won't report false recursion.
> + */
> +static struct lock_class_key gpio_lock_class;
> +
> +int __init mxc_gpio_init(struct mxc_gpio_port *port, int cnt)
> +{
> + int i, j;
> +
> + /* save for local usage */
> + mxc_gpio_ports = port;
> + gpio_table_size = cnt;
> +
> + printk(KERN_INFO "MXC GPIO hardware\n");
> +
> + for (i = 0; i < cnt; i++) {
> + /* disable the interrupt and clear the status */
> + __raw_writel(0, port[i].base + GPIO_IMR);
> + __raw_writel(~0, port[i].base + GPIO_ISR);
> + for (j = port[i].virtual_irq_start;
> + j < port[i].virtual_irq_start + 32; j++) {
> + irq_set_lockdep_class(j, &gpio_lock_class);
> + irq_set_chip_and_handler(j, &gpio_irq_chip,
> + handle_level_irq);
> + set_irq_flags(j, IRQF_VALID);
> + }
> +
> + /* register gpio chip */
> + port[i].chip.direction_input = mxc_gpio_direction_input;
> + port[i].chip.direction_output = mxc_gpio_direction_output;
> + port[i].chip.get = mxc_gpio_get;
> + port[i].chip.set = mxc_gpio_set;
> + port[i].chip.base = i * 32;
> + port[i].chip.ngpio = 32;
> +
> + spin_lock_init(&port[i].lock);
> +
> + /* its a serious configuration bug when it fails */
> + BUG_ON( gpiochip_add(&port[i].chip) < 0 );
> +
> + if (cpu_is_mx1() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
> + /* setup one handler for each entry */
> + irq_set_chained_handler(port[i].irq,
> + mx3_gpio_irq_handler);
> + irq_set_handler_data(port[i].irq, &port[i]);
> + if (port[i].irq_high) {
> + /* setup handler for GPIO 16 to 31 */
> + irq_set_chained_handler(port[i].irq_high,
> + mx3_gpio_irq_handler);
> + irq_set_handler_data(port[i].irq_high,
> + &port[i]);
> + }
> + }
> + }
> +
> + if (cpu_is_mx2()) {
> + /* setup one handler for all GPIO interrupts */
> + irq_set_chained_handler(port[0].irq, mx2_gpio_irq_handler);
> + irq_set_handler_data(port[0].irq, port);
> + }
> +
> + return 0;
> +}
> --
> 1.7.4.1
>
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2011-06-04 22:35 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-06-04 11:47 [PATCH v3 0/5] Move plat-mxc gpio driver into drivers/gpio Shawn Guo
2011-06-04 11:47 ` [PATCH v3 1/5] gpio: gpio-mxc: copy plat-mxc/gpio.c " Shawn Guo
2011-06-04 22:35 ` Grant Likely
2011-06-04 11:47 ` [PATCH v3 2/5] gpio: gpio-mxc: make it work for Freescale MXC architecture Shawn Guo
2011-06-04 11:47 ` [PATCH v3 3/5] ARM: mxc: migrate mach-mx5 gpio driver to gpio-mxc Shawn Guo
2011-06-04 11:47 ` [PATCH v3 4/5] ARM: mxc: migrate mach-imx " Shawn Guo
2011-06-04 11:47 ` [PATCH v3 5/5] ARM: mxc: remove plat-mxc/gpio driver Shawn Guo
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