From: Jebediah Huang <jebediah.huang@gmail.com>
To: linux-arm-kernel@lists.infradead.org, linux-input@vger.kernel.org
Subject: Using PXA arm board with MAX7319 GPIO expander input
Date: Mon, 8 Feb 2010 13:44:10 +0800 [thread overview]
Message-ID: <bf0eec9a1002072144n461e5894m8993bfd4e8f49e9b@mail.gmail.com> (raw)
Hello ,
I have PXA166 board with MAX7319 GPIO expander connected with 8
buttons. When any button is pressed, I want to get input event. Can
this be done?
I have read the littleton and aspenite code to try. The SDA is 105,
SCL is 106. I use MAX732x driver. It is set as I2C slave at 0x6C. So I
set up:
static struct i2c_pxa_platform_data pwri2c_info __initdata = {
.use_pio = 1,
};
static unsigned long peony_pin_config[] __initdata = {
/* i2c bus */
GPIO105_CI2C_SDA,
GPIO106_CI2C_SCL,
}
static struct max732x_platform_data max7319_data[] = {
[0] = {
.gpio_base = GPIO_EXT0(0),
},
};
static struct i2c_board_info i2c_board_info[] =
{
{
.type = "max7319",
.addr = 0x6C,
.irq = IRQ_GPIO(105),
.platform_data = &max7319_data[0],
},
};
when bootup I see;
<6>[ 0.290770] I2C: i2c-0: PXA I2C adapter
<6>[ 0.307118] I2C: i2c-1: PXA I2C adapter
<6>[ 0.821709] hello pony_init
<3>[ 0.838559] platform_driver_register
<6>[ 0.868069] max732x_read: read g 1
<6>[ 0.881893] max732x_read: read g 0
<4>[ 0.898895] i2c: error: exhausted retries
<4>[ 0.911947] i2c: msg_num: 0 msg_idx: -2000 msg_ptr: 0
<4>[ 0.927509] i2c: ICR: 000007e0 ISR: 00000002
<4>[ 0.927526] i2c: log: [00000006:00000000] [00000006:00000000]
[00000006:00000000] [00000006:00000000] [00000006:00000000]
[00000006:00000000] [0000000
<3>[ 1.167890] dummy 0-005d: failed reading
<5>[ 1.182585] SCSI subsystem initialized
Maybe max732x driver is not getting correct data from my setup? No
event when pressing button. If any ideas?
Thank you very much!
Jeb
next reply other threads:[~2010-02-08 5:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-08 5:44 Jebediah Huang [this message]
2010-02-08 6:02 ` Using PXA arm board with MAX7319 GPIO expander input Eric Miao
2010-02-08 7:02 ` Jebediah Huang
2010-02-08 7:36 ` Daniel Mack
2010-02-08 7:56 ` Jebediah Huang
2010-02-08 11:08 ` Jebediah Huang
2010-02-08 11:33 ` Daniel Mack
2010-02-08 12:32 ` Marc Zyngier
2010-02-08 13:04 ` Daniel Mack
2010-02-09 1:05 ` Eric Miao
2010-02-09 7:39 ` Marc Zyngier
2010-02-09 8:19 ` Eric Miao
2010-02-09 10:22 ` Marc Zyngier
2010-02-09 1:07 ` Eric Miao
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