On Thu, 14 Feb 2008 17:21:06 +0200, "Peter 'p2' De Schrijver"
<peter.de-schrijver@xxxxxxxxx> wrote:
> Please ignore the previous version of this patch.
>
> This patch introduces seperate IRQs for the various interrupt sources of
> the TWL4030 power block. This is similar in spirit to the IRQs of the
> TWL4030 GPIO block.
>
>
>
> Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@xxxxxxxxx>
> ---
> drivers/i2c/chips/Kconfig | 4 +
> drivers/i2c/chips/Makefile | 3 +-
> drivers/i2c/chips/twl4030_core.c | 3 +-
> drivers/i2c/chips/twl4030_pwrirq.c | 230
> ++++++++++++++++++++++++++++++++
> include/asm-arm/arch-omap/board-rx51.h | 5 +-
> include/asm-arm/arch-omap/twl4030.h | 10 ++
> 6 files changed, 252 insertions(+), 3 deletions(-)
> create mode 100644 drivers/i2c/chips/twl4030_pwrirq.c
>
> diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
> index f8b4e54..fa817b7 100644
> --- a/drivers/i2c/chips/Kconfig
> +++ b/drivers/i2c/chips/Kconfig
> @@ -164,6 +164,10 @@ config TWL4030_POWEROFF
> bool "TWL4030 device poweroff"
> depends on TWL4030_CORE
>
> +config TWL4030_PWRBUTTON
> + bool "TWL4030 Power button Driver"
> + depends on TWL4030_CORE
> +
> config SENSORS_M41T00
> tristate "ST M41T00 RTC chip (DEPRECATED)"
> depends on PPC32
> diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
> index 72a053d..94d7bd8 100644
> --- a/drivers/i2c/chips/Makefile
> +++ b/drivers/i2c/chips/Makefile
> @@ -17,10 +17,11 @@ obj-$(CONFIG_SENSORS_TLV320AIC23) += tlv320aic23.o
> obj-$(CONFIG_GPIOEXPANDER_OMAP) += gpio_expander_omap.o
> obj-$(CONFIG_MENELAUS) += menelaus.o
> obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o
> -obj-$(CONFIG_TWL4030_CORE) += twl4030_core.o
> +obj-$(CONFIG_TWL4030_CORE) += twl4030_core.o twl4030_pwrirq.o
> obj-$(CONFIG_TWL4030_GPIO) += twl4030_gpio.o
> obj-$(CONFIG_TWL4030_USB) += twl4030_usb.o
> obj-$(CONFIG_TWL4030_POWEROFF) += twl4030_poweroff.o
> +obj-$(CONFIG_TWL4030_PWRBUTTON) += twl4030_pwrbutton.o
> obj-$(CONFIG_RTC_X1205_I2C) += x1205.o
>
> ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
>
> diff --git a/drivers/i2c/chips/twl4030_pwrirq.c
> b/drivers/i2c/chips/twl4030_pwrirq.c
> new file mode 100644
> index 0000000..765a6b0
> --- /dev/null
> +++ b/drivers/i2c/chips/twl4030_pwrirq.c
> @@ -0,0 +1,230 @@
> +/*
> + * twl4030_pwrirq.c - handle power interrupts from TWL3040
> + *
> + * Copyright (C) 2008 Nokia Corporation
> + *
> + * Written by Peter De Schrijver <peter.de-schrijver@xxxxxxxxx>
> + *
> + * This file is subject to the terms and conditions of the GNU General
> + * Public License. See the file "COPYING" in the main directory of this
> + * archive for more details.
> + *
> + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> + */
> +
> +#include <linux/kernel_stat.h>
> +#include <linux/module.h>
> +#include <linux/interrupt.h>
> +#include <linux/irq.h>
> +#include <linux/i2c.h>
> +#include <linux/random.h>
> +#include <linux/kthread.h>
> +#include <asm/arch/twl4030.h>
> +
> +#define PWR_ISR1 0
> +#define PWR_IMR1 1
> +#define PWR_SIH_CTRL 7
> +#define PWR_SIH_CTRL_COR (1<<2)
> +
> +static u8 twl4030_pwrirq_mask;
> +static u8 twl4030_pwrirq_pending_unmask;
> +
> +static struct task_struct *twl4030_pwrirq_unmask_thread;
> +
> +static void twl4030_pwrirq_ack(unsigned int irq) {}
> +
> +static void twl4030_pwrirq_disableint(unsigned int irq) {}
> +
> +static void twl4030_pwrirq_enableint(unsigned int irq)
> +{
> + twl4030_pwrirq_pending_unmask |= 1 << (irq - IH_TWL4030_PWRBASE);
> + if (twl4030_pwrirq_unmask_thread &&
> + twl4030_pwrirq_unmask_thread->state != TASK_RUNNING)
> + wake_up_process(twl4030_pwrirq_unmask_thread);
> +}
> +
> +static struct irq_chip twl4030_pwrirq_chip = {
> + .name = "twl4030-pwr",
> + .ack = twl4030_pwrirq_ack,
> + .mask = twl4030_pwrirq_disableint,
> + .unmask = twl4030_pwrirq_enableint,
> +};
> +
> +static void do_twl4030_pwrmodule_irq(unsigned int irq, irq_desc_t *desc)
> +{
> + struct irqaction *action;
> + const unsigned int cpu = smp_processor_id();
> +
> + desc->status |= IRQ_LEVEL;
> +
> + if (!desc->depth) {
> + kstat_cpu(cpu).irqs[irq]++;
> +
> + action = desc->action;
> + if (action) {
> + int ret;
> + int status = 0;
> + int retval = 0;
> +
> + do {
> + ret = action->handler(irq, action->dev_id);
> + if (ret == IRQ_HANDLED)
> + status |= action->flags;
> + retval |= ret;
> + action = action->next;
> + } while (action);
> +
> + if (status & IRQF_SAMPLE_RANDOM)
> + add_interrupt_randomness(irq);
> +
> + if (retval != IRQ_HANDLED)
> + printk(KERN_ERR "ISR for TWL4030 power module"
> + " irq %d can't handle interrupt\n",
> + irq);
> + } else {
> + local_irq_disable();
> + twl4030_pwrirq_mask |= 1 << (irq - IH_TWL4030_PWRBASE);
> + local_irq_enable();
> + twl4030_i2c_write_u8(TWL4030_MODULE_INT,
> + twl4030_pwrirq_mask, PWR_IMR1);
> + }
> + }
> +}
> +
> +static void do_twl4030_pwrirq(unsigned int irq, irq_desc_t *desc)
> +{
> + const unsigned int cpu = smp_processor_id();
> +
> + desc->status |= IRQ_LEVEL;
> +
> + desc->chip->ack(irq);
> +
> + if (!desc->depth) {
> + int ret;
> + int module_irq;
> + u8 pwr_isr;
> +
> + kstat_cpu(cpu).irqs[irq]++;
> +
> + ret = twl4030_i2c_read_u8(TWL4030_MODULE_INT, &pwr_isr,
> + PWR_ISR1);
> + if (ret) {
> + printk(KERN_WARNING
> + "I2C error %d while reading TWL4030"
> + "INT PWR_ISR1 register\n", ret);
> + return;
> + }
> +
> + for (module_irq = IH_TWL4030_PWRBASE; pwr_isr != 0;
> + module_irq++, pwr_isr >>= 1) {
> + if (pwr_isr & 1) {
> + irq_desc_t *d = irq_desc + module_irq;
> +
> + local_irq_disable();
> +
> + d->handle_irq(module_irq, d);
> +
> + local_irq_enable();
> + }
> + }
> +
> + desc->chip->unmask(irq);
> + }
> +}
> +
> +static int twl4030_pwrirq_thread(void *data)
> +{
> + current->flags |= PF_NOFREEZE;
> +
> + while (!kthread_should_stop()) {
> + u8 local_unmask;
> +
> + local_irq_disable();
> + local_unmask = twl4030_pwrirq_pending_unmask;
> + twl4030_pwrirq_pending_unmask = 0;
> + local_irq_enable();
> +
> + twl4030_pwrirq_mask &= ~local_unmask;
> +
> + twl4030_i2c_write_u8(TWL4030_MODULE_INT, twl4030_pwrirq_mask,
> + PWR_IMR1);
> +
> + local_irq_disable();
> + if (!twl4030_pwrirq_pending_unmask)
> + set_current_state(TASK_INTERRUPTIBLE);
> + local_irq_enable();
> +
> + schedule();
> + }
> + set_current_state(TASK_RUNNING);
> + return 0;
> +}
> +
> +static int __init twl4030_pwrirq_init(void)
> +{
> + int i, err;
> + u8 val;
> +
> + twl4030_pwrirq_mask = 0xff;
> + twl4030_pwrirq_pending_unmask = 0;
> +
> + err = twl4030_i2c_write_u8(TWL4030_MODULE_INT, twl4030_pwrirq_mask,
> + PWR_IMR1);
> + if (err)
> + return err;
> +
> + /* Enable clear on read */
> +
> + err = twl4030_i2c_write_u8(TWL4030_MODULE_INT, PWR_SIH_CTRL_COR,
> + PWR_SIH_CTRL);
> + if (err)
> + return err;
> +
> + twl4030_pwrirq_unmask_thread = kthread_create(twl4030_pwrirq_thread,
> + NULL, "twl4030 pwrirq");
> + if (!twl4030_pwrirq_unmask_thread) {
> + printk(KERN_ERR
> + "%s: could not create twl4030 pwrirq unmask thread!\n",
> + __FUNCTION__);
> + return -ENOMEM;
> + }
> +
> + for (i = IH_TWL4030_PWRBASE; i < IH_TWL4030_PWRBASE_END; i++) {
> + set_irq_chip(i, &twl4030_pwrirq_chip);
> + set_irq_handler(i, do_twl4030_pwrmodule_irq);
> + set_irq_flags(i, IRQF_VALID);
> + }
> +
> + set_irq_chained_handler(TWL4030_MODIRQ_PWR, do_twl4030_pwrirq);
> +
> + return 0;
> +}
> +
> +static void __exit twl4030_pwrirq_exit(void)
> +{
> +
> + int i;
> +
> + set_irq_handler(TWL4030_MODIRQ_PWR, NULL);
> + set_irq_flags(TWL4030_MODIRQ_PWR, 0);
> +
> + for (i = IH_TWL4030_PWRBASE; i < IH_TWL4030_PWRBASE_END; i++) {
> + set_irq_handler(i, NULL);
> + set_irq_flags(i, 0);
> + }
> +
> + if (twl4030_pwrirq_unmask_thread) {
> + kthread_stop(twl4030_pwrirq_unmask_thread);
> + twl4030_pwrirq_unmask_thread = NULL;
> + }
> +}
> +
> +subsys_initcall(twl4030_pwrirq_init);
> +module_exit(twl4030_pwrirq_exit);
> diff --git a/include/asm-arm/arch-omap/board-rx51.h
> b/include/asm-arm/arch-omap/board-rx51.h
> index c8aa586..8fe09af 100644
> --- a/include/asm-arm/arch-omap/board-rx51.h
> +++ b/include/asm-arm/arch-omap/board-rx51.h
Still i can't see this file in linux-omap. Are we using the same tree ??
:-s
> @@ -70,10 +70,13 @@
> #define IH_TWL4030_BASE IH_BOARD_BASE
> #define IH_TWL4030_END (IH_TWL4030_BASE+8)
>
> +#define IH_TWL4030_PWRBASE (IH_TWL4030_END)
> +#define IH_TWL4030_PWRBASE_END (IH_TWL4030_PWRBASE+8)
> +
> #ifdef CONFIG_TWL4030_GPIO
>
> /* TWL4030 GPIO Interrupts */
> -#define IH_TWL4030_GPIO_BASE (IH_TWL4030_END)
> +#define IH_TWL4030_GPIO_BASE (IH_TWL4030_PWRBASE_END)
> #define IH_TWL4030_GPIO_END (IH_TWL4030_BASE+18)
> #define NR_IRQS (IH_TWL4030_GPIO_END)
> #else
> diff --git a/include/asm-arm/arch-omap/twl4030.h
> b/include/asm-arm/arch-omap/twl4030.h
> index 7f9b90d..fc11fd0 100644
> --- a/include/asm-arm/arch-omap/twl4030.h
> +++ b/include/asm-arm/arch-omap/twl4030.h
> @@ -62,6 +62,16 @@
> #define TWL4030_MODIRQ_MADC (IH_TWL4030_BASE + 3)
> #define TWL4030_MODIRQ_USB (IH_TWL4030_BASE + 4)
> #define TWL4030_MODIRQ_PWR (IH_TWL4030_BASE + 5)
> +
> +#define TWL4030_PWRIRQ_PWRBTN (IH_TWL4030_PWRBASE + 0)
> +#define TWL4030_PWRIRQ_CHG_PRES (IH_TWL4030_PWRBASE + 1)
> +#define TWL4030_PWRIRQ_USB_PRES (IH_TWL4030_PWRBASE + 2)
> +#define TWL4030_PWRIRQ_RTC (IH_TWL4030_PWRBASE + 3)
> +#define TWL4030_PWRIRQ_HOT_DIE (IH_TWL4030_PWRBASE + 4)
> +#define TWL4030_PWRIRQ_PWROK_TIMEOUT (IH_TWL4030_PWRBASE + 5)
> +#define TWL4030_PWRIRQ_MBCHG (IH_TWL4030_PWRBASE + 6)
> +#define TWL4030_PWRIRQ_SC_DETECT (IH_TWL4030_PWRBASE + 7)
> +
> /* Rest are unsued currently*/
>
> /* Offsets to Power Registers */
> --
> 1.5.3.4
>
> --
> goa is a state of mind
> -
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--
Best Regards,
Felipe Balbi
http://felipebalbi.com
me@xxxxxxxxxxxxxxx
-
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