mfd: PCF50633 gpio support

What the PCF05633 calls as a 'GPIO' is much more than the GPIO in the linux
sense and there are only 4 of them - which means, the gpiolib is not used
here.

Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 2fa3504e165a82ec0b70ce6dbcf85a9de789edce..06a2b0f7737c98f9009ea9ee4cb1986b7208ef7e 100644 (file)
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -233,6 +233,13 @@ config PCF50633_ADC
         Say yes here if you want to include support for ADC in the
         NXP PCF50633 chip.
 
+config PCF50633_GPIO
+       tristate "Support for NXP PCF50633 GPIO"
+       depends on MFD_PCF50633
+       help
+        Say yes here if you want to include support GPIO for pins on
+        the PCF50633 chip.
+
 endmenu
 
 menu "Multimedia Capabilities Port drivers"

diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 138f9c4d3d7b052327f6125401a5f8785c7a4eca..3afb5192e4dadf31c640c2574101950f2068f0ac 100644 (file)
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -39,4 +39,5 @@ obj-$(CONFIG_UCB1400_CORE)    += ucb1400_core.o
 obj-$(CONFIG_PMIC_DA903X)      += da903x.o
 
 obj-$(CONFIG_MFD_PCF50633)     += pcf50633-core.o
-obj-$(CONFIG_PCF50633_ADC)     += pcf50633-adc.o
\ No newline at end of file
+obj-$(CONFIG_PCF50633_ADC)     += pcf50633-adc.o
+obj-$(CONFIG_PCF50633_GPIO)    += pcf50633-gpio.o
\ No newline at end of file

diff --git a/drivers/mfd/pcf50633-gpio.c b/drivers/mfd/pcf50633-gpio.c
new file mode 100644 (file)
index 0000000..2fa2eca
--- /dev/null
+++ b/drivers/mfd/pcf50633-gpio.c
@@ -0,0 +1,118 @@
+/* NXP PCF50633 GPIO Driver
+ *
+ * (C) 2006-2008 by Openmoko, Inc.
+ * Author: Balaji Rao <balajirrao@openmoko.org>
+ * All rights reserved.
+ *
+ * Broken down from monstrous PCF50633 driver mainly by
+ * Harald Welte, Andy Green and Werner Almesberger
+ *
+ *  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.
+ *
+ */
+
+#include <linux/kernel.h>
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/gpio.h>
+
+enum pcf50633_regulator_id {
+       PCF50633_REGULATOR_AUTO,
+       PCF50633_REGULATOR_DOWN1,
+       PCF50633_REGULATOR_DOWN2,
+       PCF50633_REGULATOR_LDO1,
+       PCF50633_REGULATOR_LDO2,
+       PCF50633_REGULATOR_LDO3,
+       PCF50633_REGULATOR_LDO4,
+       PCF50633_REGULATOR_LDO5,
+       PCF50633_REGULATOR_LDO6,
+       PCF50633_REGULATOR_HCLDO,
+       PCF50633_REGULATOR_MEMLDO,
+};
+
+#define PCF50633_REG_AUTOOUT   0x1a
+#define PCF50633_REG_DOWN1OUT  0x1e
+#define PCF50633_REG_DOWN2OUT  0x22
+#define PCF50633_REG_MEMLDOOUT 0x26
+#define PCF50633_REG_LDO1OUT   0x2d
+#define PCF50633_REG_LDO2OUT   0x2f
+#define PCF50633_REG_LDO3OUT   0x31
+#define PCF50633_REG_LDO4OUT   0x33
+#define PCF50633_REG_LDO5OUT   0x35
+#define PCF50633_REG_LDO6OUT   0x37
+#define PCF50633_REG_HCLDOOUT  0x39
+
+static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = {
+       [PCF50633_REGULATOR_AUTO]       = PCF50633_REG_AUTOOUT,
+       [PCF50633_REGULATOR_DOWN1]      = PCF50633_REG_DOWN1OUT,
+       [PCF50633_REGULATOR_DOWN2]      = PCF50633_REG_DOWN2OUT,
+       [PCF50633_REGULATOR_MEMLDO]     = PCF50633_REG_MEMLDOOUT,
+       [PCF50633_REGULATOR_LDO1]       = PCF50633_REG_LDO1OUT,
+       [PCF50633_REGULATOR_LDO2]       = PCF50633_REG_LDO2OUT,
+       [PCF50633_REGULATOR_LDO3]       = PCF50633_REG_LDO3OUT,
+       [PCF50633_REGULATOR_LDO4]       = PCF50633_REG_LDO4OUT,
+       [PCF50633_REGULATOR_LDO5]       = PCF50633_REG_LDO5OUT,
+       [PCF50633_REGULATOR_LDO6]       = PCF50633_REG_LDO6OUT,
+       [PCF50633_REGULATOR_HCLDO]      = PCF50633_REG_HCLDOOUT,
+};
+
+int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val)
+{
+       u8 reg;
+
+       reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
+
+       return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val);
+}
+EXPORT_SYMBOL_GPL(pcf50633_gpio_set);
+
+u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio)
+{
+       u8 reg, val;
+
+       reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
+       val = pcf50633_reg_read(pcf, reg) & 0x07;
+
+       return val;
+}
+EXPORT_SYMBOL_GPL(pcf50633_gpio_get);
+
+int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert)
+{
+       u8 val, reg;
+
+       reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
+       val = !!invert << 3;
+
+       return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val);
+}
+EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set);
+
+int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio)
+{
+       u8 reg, val;
+
+       reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG;
+       val = pcf50633_reg_read(pcf, reg);
+
+       return val & (1 << 3);
+}
+EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get);
+
+int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,
+                                       int gpio, int regulator, int on)
+{
+       u8 reg, val, mask;
+
+       /* the *ENA register is always one after the *OUT register */
+       reg = pcf50633_regulator_registers[regulator] + 1;
+
+       val = !!on << (gpio - PCF50633_GPIO1);
+       mask = 1 << (gpio - PCF50633_GPIO1);
+
+       return pcf50633_reg_set_bit_mask(pcf, reg, mask, val);
+}
+EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);

diff --git a/include/linux/mfd/pcf50633/gpio.h b/include/linux/mfd/pcf50633/gpio.h
new file mode 100644 (file)
index 0000000..a42b845
--- /dev/null
+++ b/include/linux/mfd/pcf50633/gpio.h
@@ -0,0 +1,52 @@
+/*
+ * gpio.h -- GPIO driver for NXP PCF50633
+ *
+ * (C) 2006-2008 by Openmoko, 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.
+ */
+
+#ifndef __LINUX_MFD_PCF50633_GPIO_H
+#define __LINUX_MFD_PCF50633_GPIO_H
+
+#include <linux/mfd/pcf50633/core.h>
+
+#define PCF50633_GPIO1         1
+#define PCF50633_GPIO2         2
+#define PCF50633_GPIO3         3
+#define PCF50633_GPO           4
+
+#define PCF50633_REG_GPIO1CFG  0x14
+#define PCF50633_REG_GPIO2CFG  0x15
+#define PCF50633_REG_GPIO3CFG  0x16
+#define PCF50633_REG_GPOCFG    0x17
+
+#define PCF50633_GPOCFG_GPOSEL_MASK    0x07
+
+enum pcf50633_reg_gpocfg {
+       PCF50633_GPOCFG_GPOSEL_0        = 0x00,
+       PCF50633_GPOCFG_GPOSEL_LED_NFET = 0x01,
+       PCF50633_GPOCFG_GPOSEL_SYSxOK   = 0x02,
+       PCF50633_GPOCFG_GPOSEL_CLK32K   = 0x03,
+       PCF50633_GPOCFG_GPOSEL_ADAPUSB  = 0x04,
+       PCF50633_GPOCFG_GPOSEL_USBxOK   = 0x05,
+       PCF50633_GPOCFG_GPOSEL_ACTPH4   = 0x06,
+       PCF50633_GPOCFG_GPOSEL_1        = 0x07,
+       PCF50633_GPOCFG_GPOSEL_INVERSE  = 0x08,
+};
+
+int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val);
+u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio);
+
+int pcf50633_gpio_invert_set(struct pcf50633 *, int gpio, int invert);
+int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio);
+
+int pcf50633_gpio_power_supply_set(struct pcf50633 *,
+                                       int gpio, int regulator, int on);
+#endif /* __LINUX_MFD_PCF50633_GPIO_H */
+
+