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authorCory Maccarrone <darkstar6262@gmail.com>2010-01-19 11:22:45 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2010-03-07 22:17:09 +0100
commit6048a3dd2371c58611ea0ab8b306f8f1469399ae (patch)
tree961cff65dda1ea4ab5049d01d858c95ee2ac5044 /include/linux/htcpld.h
parent08ff6f2a9908c87b0adffe6453291be22db3a62f (diff)
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mfd: Add HTCPLD driver
This change introduces a driver for the HTC PLD chip found on some smartphones, such as the HTC Wizard and HTC Herald. It works through the I2C bus and acts as a GPIO extender. Specifically: * it can have several sub-devices, each with its own I2C address * Each sub-device provides 8 output and 8 input pins * The chip attaches to one GPIO to signal when any of the input GPIOs change -- at which point all chips must be scanned for changes This driver implements the GPIOs throught the kernel's GPIO and IRQ framework. This allows any GPIO-servicing drivers to operate on htcpld pins, such as the gpio-keys and gpio-leds drivers. Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux/htcpld.h')
-rw-r--r--include/linux/htcpld.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/htcpld.h b/include/linux/htcpld.h
new file mode 100644
index 000000000000..ab3f6cb4dddc
--- /dev/null
+++ b/include/linux/htcpld.h
@@ -0,0 +1,24 @@
+#ifndef __LINUX_HTCPLD_H
+#define __LINUX_HTCPLD_H
+
+struct htcpld_chip_platform_data {
+ unsigned int addr;
+ unsigned int reset;
+ unsigned int num_gpios;
+ unsigned int gpio_out_base;
+ unsigned int gpio_in_base;
+ unsigned int irq_base;
+ unsigned int num_irqs;
+};
+
+struct htcpld_core_platform_data {
+ unsigned int int_reset_gpio_hi;
+ unsigned int int_reset_gpio_lo;
+ unsigned int i2c_adapter_id;
+
+ struct htcpld_chip_platform_data *chip;
+ unsigned int num_chip;
+};
+
+#endif /* __LINUX_HTCPLD_H */
+