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-rw-r--r--drivers/misc/Kconfig32
-rw-r--r--drivers/misc/Makefile3
-rw-r--r--drivers/misc/ad525x_dpot-i2c.c134
-rw-r--r--drivers/misc/ad525x_dpot-spi.c172
-rw-r--r--drivers/misc/ad525x_dpot.c1016
-rw-r--r--drivers/misc/ad525x_dpot.h202
-rw-r--r--drivers/misc/c2port/core.c4
-rw-r--r--drivers/misc/ds1682.c6
-rw-r--r--drivers/misc/eeprom/at24.c65
-rw-r--r--drivers/misc/eeprom/at25.c6
-rw-r--r--drivers/misc/eeprom/eeprom.c39
-rw-r--r--drivers/misc/eeprom/eeprom_93cx6.c39
-rw-r--r--drivers/misc/eeprom/max6875.c54
-rw-r--r--drivers/misc/hdpuftrs/Makefile1
-rw-r--r--drivers/misc/hdpuftrs/hdpu_cpustate.c256
-rw-r--r--drivers/misc/hdpuftrs/hdpu_nexus.c149
16 files changed, 1180 insertions, 998 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 0d0d625fece..26386a92f5a 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -14,11 +14,17 @@ menuconfig MISC_DEVICES
if MISC_DEVICES
config AD525X_DPOT
- tristate "Analog Devices AD525x Digital Potentiometers"
- depends on I2C && SYSFS
+ tristate "Analog Devices Digital Potentiometers"
+ depends on (I2C || SPI) && SYSFS
help
If you say yes here, you get support for the Analog Devices
- AD5258, AD5259, AD5251, AD5252, AD5253, AD5254 and AD5255
+ AD5258, AD5259, AD5251, AD5252, AD5253, AD5254, AD5255
+ AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
+ AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
+ AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
+ AD7376, AD8400, AD8402, AD8403, ADN2850, AD5241, AD5242,
+ AD5243, AD5245, AD5246, AD5247, AD5248, AD5280, AD5282,
+ ADN2860, AD5273, AD5171, AD5170, AD5172, AD5173
digital potentiometer chips.
See Documentation/misc-devices/ad525x_dpot.txt for the
@@ -27,6 +33,26 @@ config AD525X_DPOT
This driver can also be built as a module. If so, the module
will be called ad525x_dpot.
+config AD525X_DPOT_I2C
+ tristate "support I2C bus connection"
+ depends on AD525X_DPOT && I2C
+ help
+ Say Y here if you have a digital potentiometers hooked to an I2C bus.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad525x_dpot-i2c.
+
+config AD525X_DPOT_SPI
+ tristate "support SPI bus connection"
+ depends on AD525X_DPOT && SPI_MASTER
+ help
+ Say Y here if you have a digital potentiometers hooked to an SPI bus.
+
+ If unsure, say N (but it's safe to say "Y").
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad525x_dpot-spi.
+
config ATMEL_PWM
tristate "Atmel AT32/AT91 PWM support"
depends on AVR32 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_AT91CAP9
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 7b6f7eefdf8..6ed06a19474 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -3,8 +3,9 @@
#
obj-$(CONFIG_IBM_ASM) += ibmasm/
-obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
obj-$(CONFIG_AD525X_DPOT) += ad525x_dpot.o
+obj-$(CONFIG_AD525X_DPOT_I2C) += ad525x_dpot-i2c.o
+obj-$(CONFIG_AD525X_DPOT_SPI) += ad525x_dpot-spi.o
obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
diff --git a/drivers/misc/ad525x_dpot-i2c.c b/drivers/misc/ad525x_dpot-i2c.c
new file mode 100644
index 00000000000..374352af797
--- /dev/null
+++ b/drivers/misc/ad525x_dpot-i2c.c
@@ -0,0 +1,134 @@
+/*
+ * Driver for the Analog Devices digital potentiometers (I2C bus)
+ *
+ * Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+
+#include "ad525x_dpot.h"
+
+/* ------------------------------------------------------------------------- */
+/* I2C bus functions */
+static int write_d8(void *client, u8 val)
+{
+ return i2c_smbus_write_byte(client, val);
+}
+
+static int write_r8d8(void *client, u8 reg, u8 val)
+{
+ return i2c_smbus_write_byte_data(client, reg, val);
+}
+
+static int write_r8d16(void *client, u8 reg, u16 val)
+{
+ return i2c_smbus_write_word_data(client, reg, val);
+}
+
+static int read_d8(void *client)
+{
+ return i2c_smbus_read_byte(client);
+}
+
+static int read_r8d8(void *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int read_r8d16(void *client, u8 reg)
+{
+ return i2c_smbus_read_word_data(client, reg);
+}
+
+static const struct ad_dpot_bus_ops bops = {
+ .read_d8 = read_d8,
+ .read_r8d8 = read_r8d8,
+ .read_r8d16 = read_r8d16,
+ .write_d8 = write_d8,
+ .write_r8d8 = write_r8d8,
+ .write_r8d16 = write_r8d16,
+};
+
+static int __devinit ad_dpot_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ad_dpot_bus_data bdata = {
+ .client = client,
+ .bops = &bops,
+ };
+
+ struct ad_dpot_id dpot_id = {
+ .name = (char *) &id->name,
+ .devid = id->driver_data,
+ };
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_WORD_DATA)) {
+ dev_err(&client->dev, "SMBUS Word Data not Supported\n");
+ return -EIO;
+ }
+
+ return ad_dpot_probe(&client->dev, &bdata, &dpot_id);
+}
+
+static int __devexit ad_dpot_i2c_remove(struct i2c_client *client)
+{
+ return ad_dpot_remove(&client->dev);
+}
+
+static const struct i2c_device_id ad_dpot_id[] = {
+ {"ad5258", AD5258_ID},
+ {"ad5259", AD5259_ID},
+ {"ad5251", AD5251_ID},
+ {"ad5252", AD5252_ID},
+ {"ad5253", AD5253_ID},
+ {"ad5254", AD5254_ID},
+ {"ad5255", AD5255_ID},
+ {"ad5241", AD5241_ID},
+ {"ad5242", AD5242_ID},
+ {"ad5243", AD5243_ID},
+ {"ad5245", AD5245_ID},
+ {"ad5246", AD5246_ID},
+ {"ad5247", AD5247_ID},
+ {"ad5248", AD5248_ID},
+ {"ad5280", AD5280_ID},
+ {"ad5282", AD5282_ID},
+ {"adn2860", ADN2860_ID},
+ {"ad5273", AD5273_ID},
+ {"ad5171", AD5171_ID},
+ {"ad5170", AD5170_ID},
+ {"ad5172", AD5172_ID},
+ {"ad5173", AD5173_ID},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
+
+static struct i2c_driver ad_dpot_i2c_driver = {
+ .driver = {
+ .name = "ad_dpot",
+ .owner = THIS_MODULE,
+ },
+ .probe = ad_dpot_i2c_probe,
+ .remove = __devexit_p(ad_dpot_i2c_remove),
+ .id_table = ad_dpot_id,
+};
+
+static int __init ad_dpot_i2c_init(void)
+{
+ return i2c_add_driver(&ad_dpot_i2c_driver);
+}
+module_init(ad_dpot_i2c_init);
+
+static void __exit ad_dpot_i2c_exit(void)
+{
+ i2c_del_driver(&ad_dpot_i2c_driver);
+}
+module_exit(ad_dpot_i2c_exit);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("digital potentiometer I2C bus driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("i2c:ad_dpot");
diff --git a/drivers/misc/ad525x_dpot-spi.c b/drivers/misc/ad525x_dpot-spi.c
new file mode 100644
index 00000000000..b8c6df9c843
--- /dev/null
+++ b/drivers/misc/ad525x_dpot-spi.c
@@ -0,0 +1,172 @@
+/*
+ * Driver for the Analog Devices digital potentiometers (SPI bus)
+ *
+ * Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/spi/spi.h>
+#include <linux/module.h>
+
+#include "ad525x_dpot.h"
+
+static const struct ad_dpot_id ad_dpot_spi_devlist[] = {
+ {.name = "ad5160", .devid = AD5160_ID},
+ {.name = "ad5161", .devid = AD5161_ID},
+ {.name = "ad5162", .devid = AD5162_ID},
+ {.name = "ad5165", .devid = AD5165_ID},
+ {.name = "ad5200", .devid = AD5200_ID},
+ {.name = "ad5201", .devid = AD5201_ID},
+ {.name = "ad5203", .devid = AD5203_ID},
+ {.name = "ad5204", .devid = AD5204_ID},
+ {.name = "ad5206", .devid = AD5206_ID},
+ {.name = "ad5207", .devid = AD5207_ID},
+ {.name = "ad5231", .devid = AD5231_ID},
+ {.name = "ad5232", .devid = AD5232_ID},
+ {.name = "ad5233", .devid = AD5233_ID},
+ {.name = "ad5235", .devid = AD5235_ID},
+ {.name = "ad5260", .devid = AD5260_ID},
+ {.name = "ad5262", .devid = AD5262_ID},
+ {.name = "ad5263", .devid = AD5263_ID},
+ {.name = "ad5290", .devid = AD5290_ID},
+ {.name = "ad5291", .devid = AD5291_ID},
+ {.name = "ad5292", .devid = AD5292_ID},
+ {.name = "ad5293", .devid = AD5293_ID},
+ {.name = "ad7376", .devid = AD7376_ID},
+ {.name = "ad8400", .devid = AD8400_ID},
+ {.name = "ad8402", .devid = AD8402_ID},
+ {.name = "ad8403", .devid = AD8403_ID},
+ {.name = "adn2850", .devid = ADN2850_ID},
+ {}
+};
+
+/* ------------------------------------------------------------------------- */
+
+/* SPI bus functions */
+static int write8(void *client, u8 val)
+{
+ u8 data = val;
+ return spi_write(client, &data, 1);
+}
+
+static int write16(void *client, u8 reg, u8 val)
+{
+ u8 data[2] = {reg, val};
+ return spi_write(client, data, 1);
+}
+
+static int write24(void *client, u8 reg, u16 val)
+{
+ u8 data[3] = {reg, val >> 8, val};
+ return spi_write(client, data, 1);
+}
+
+static int read8(void *client)
+{
+ int ret;
+ u8 data;
+ ret = spi_read(client, &data, 1);
+ if (ret < 0)
+ return ret;
+
+ return data;
+}
+
+static int read16(void *client, u8 reg)
+{
+ int ret;
+ u8 buf_rx[2];
+
+ write16(client, reg, 0);
+ ret = spi_read(client, buf_rx, 2);
+ if (ret < 0)
+ return ret;
+
+ return (buf_rx[0] << 8) | buf_rx[1];
+}
+
+static int read24(void *client, u8 reg)
+{
+ int ret;
+ u8 buf_rx[3];
+
+ write24(client, reg, 0);
+ ret = spi_read(client, buf_rx, 3);
+ if (ret < 0)
+ return ret;
+
+ return (buf_rx[1] << 8) | buf_rx[2];
+}
+
+static const struct ad_dpot_bus_ops bops = {
+ .read_d8 = read8,
+ .read_r8d8 = read16,
+ .read_r8d16 = read24,
+ .write_d8 = write8,
+ .write_r8d8 = write16,
+ .write_r8d16 = write24,
+};
+
+static const struct ad_dpot_id *dpot_match_id(const struct ad_dpot_id *id,
+ char *name)
+{
+ while (id->name && id->name[0]) {
+ if (strcmp(name, id->name) == 0)
+ return id;
+ id++;
+ }
+ return NULL;
+}
+
+static int __devinit ad_dpot_spi_probe(struct spi_device *spi)
+{
+ char *name = spi->dev.platform_data;
+ const struct ad_dpot_id *dpot_id;
+
+ struct ad_dpot_bus_data bdata = {
+ .client = spi,
+ .bops = &bops,
+ };
+
+ dpot_id = dpot_match_id(ad_dpot_spi_devlist, name);
+
+ if (dpot_id == NULL) {
+ dev_err(&spi->dev, "%s not in supported device list", name);
+ return -ENODEV;
+ }
+
+ return ad_dpot_probe(&spi->dev, &bdata, dpot_id);
+}
+
+static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
+{
+ return ad_dpot_remove(&spi->dev);
+}
+
+static struct spi_driver ad_dpot_spi_driver = {
+ .driver = {
+ .name = "ad_dpot",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = ad_dpot_spi_probe,
+ .remove = __devexit_p(ad_dpot_spi_remove),
+};
+
+static int __init ad_dpot_spi_init(void)
+{
+ return spi_register_driver(&ad_dpot_spi_driver);
+}
+module_init(ad_dpot_spi_init);
+
+static void __exit ad_dpot_spi_exit(void)
+{
+ spi_unregister_driver(&ad_dpot_spi_driver);
+}
+module_exit(ad_dpot_spi_exit);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("digital potentiometer SPI bus driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("spi:ad_dpot");
diff --git a/drivers/misc/ad525x_dpot.c b/drivers/misc/ad525x_dpot.c
index 30a59f2bacd..5e6fa8449e8 100644
--- a/drivers/misc/ad525x_dpot.c
+++ b/drivers/misc/ad525x_dpot.c
@@ -1,6 +1,6 @@
/*
- * ad525x_dpot: Driver for the Analog Devices AD525x digital potentiometers
- * Copyright (c) 2009 Analog Devices, Inc.
+ * ad525x_dpot: Driver for the Analog Devices digital potentiometers
+ * Copyright (c) 2009-2010 Analog Devices, Inc.
* Author: Michael Hennerich <hennerich@blackfin.uclinux.org>
*
* DEVID #Wipers #Positions Resistor Options (kOhm)
@@ -11,6 +11,47 @@
* AD5255 3 512 25, 250
* AD5253 4 64 1, 10, 50, 100
* AD5254 4 256 1, 10, 50, 100
+ * AD5160 1 256 5, 10, 50, 100
+ * AD5161 1 256 5, 10, 50, 100
+ * AD5162 2 256 2.5, 10, 50, 100
+ * AD5165 1 256 100
+ * AD5200 1 256 10, 50
+ * AD5201 1 33 10, 50
+ * AD5203 4 64 10, 100
+ * AD5204 4 256 10, 50, 100
+ * AD5206 6 256 10, 50, 100
+ * AD5207 2 256 10, 50, 100
+ * AD5231 1 1024 10, 50, 100
+ * AD5232 2 256 10, 50, 100
+ * AD5233 4 64 10, 50, 100
+ * AD5235 2 1024 25, 250
+ * AD5260 1 256 20, 50, 200
+ * AD5262 2 256 20, 50, 200
+ * AD5263 4 256 20, 50, 200
+ * AD5290 1 256 10, 50, 100
+ * AD5291 1 256 20
+ * AD5292 1 1024 20
+ * AD5293 1 1024 20
+ * AD7376 1 128 10, 50, 100, 1M
+ * AD8400 1 256 1, 10, 50, 100
+ * AD8402 2 256 1, 10, 50, 100
+ * AD8403 4 256 1, 10, 50, 100
+ * ADN2850 3 512 25, 250
+ * AD5241 1 256 10, 100, 1M
+ * AD5246 1 128 5, 10, 50, 100
+ * AD5247 1 128 5, 10, 50, 100
+ * AD5245 1 256 5, 10, 50, 100
+ * AD5243 2 256 2.5, 10, 50, 100
+ * AD5248 2 256 2.5, 10, 50, 100
+ * AD5242 2 256 20, 50, 200
+ * AD5280 1 256 20, 50, 200
+ * AD5282 2 256 20, 50, 200
+ * ADN2860 3 512 25, 250
+ * AD5273 1 64 1, 10, 50, 100 (OTP)
+ * AD5171 1 64 5, 10, 50, 100 (OTP)
+ * AD5170 1 256 2.5, 10, 50, 100 (OTP)
+ * AD5172 2 256 2.5, 10, 50, 100 (OTP)
+ * AD5173 2 256 2.5, 10, 50, 100 (OTP)
*
* See Documentation/misc-devices/ad525x_dpot.txt for more info.
*
@@ -28,77 +69,283 @@
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
#include <linux/delay.h>
+#include <linux/slab.h>
-#define DRIVER_NAME "ad525x_dpot"
-#define DRIVER_VERSION "0.1"
-
-enum dpot_devid {
- AD5258_ID,
- AD5259_ID,
- AD5251_ID,
- AD5252_ID,
- AD5253_ID,
- AD5254_ID,
- AD5255_ID,
-};
+#define DRIVER_VERSION "0.2"
-#define AD5258_MAX_POSITION 64
-#define AD5259_MAX_POSITION 256
-#define AD5251_MAX_POSITION 64
-#define AD5252_MAX_POSITION 256
-#define AD5253_MAX_POSITION 64
-#define AD5254_MAX_POSITION 256
-#define AD5255_MAX_POSITION 512
-
-#define AD525X_RDAC0 0
-#define AD525X_RDAC1 1
-#define AD525X_RDAC2 2
-#define AD525X_RDAC3 3
-
-#define AD525X_REG_TOL 0x18
-#define AD525X_TOL_RDAC0 (AD525X_REG_TOL | AD525X_RDAC0)
-#define AD525X_TOL_RDAC1 (AD525X_REG_TOL | AD525X_RDAC1)
-#define AD525X_TOL_RDAC2 (AD525X_REG_TOL | AD525X_RDAC2)
-#define AD525X_TOL_RDAC3 (AD525X_REG_TOL | AD525X_RDAC3)
-
-/* RDAC-to-EEPROM Interface Commands */
-#define AD525X_I2C_RDAC (0x00 << 5)
-#define AD525X_I2C_EEPROM (0x01 << 5)
-#define AD525X_I2C_CMD (0x80)
-
-#define AD525X_DEC_ALL_6DB (AD525X_I2C_CMD | (0x4 << 3))
-#define AD525X_INC_ALL_6DB (AD525X_I2C_CMD | (0x9 << 3))
-#define AD525X_DEC_ALL (AD525X_I2C_CMD | (0x6 << 3))
-#define AD525X_INC_ALL (AD525X_I2C_CMD | (0xB << 3))
-
-static s32 ad525x_read(struct i2c_client *client, u8 reg);
-static s32 ad525x_write(struct i2c_client *client, u8 reg, u8 value);
+#include "ad525x_dpot.h"
/*
* Client data (each client gets its own)
*/
struct dpot_data {
+ struct ad_dpot_bus_data bdata;
struct mutex update_lock;
unsigned rdac_mask;
unsigned max_pos;
- unsigned devid;
+ unsigned long devid;
+ unsigned uid;
+ unsigned feat;
+ unsigned wipers;
+ u16 rdac_cache[MAX_RDACS];
+ DECLARE_BITMAP(otp_en_mask, MAX_RDACS);
};
+static inline int dpot_read_d8(struct dpot_data *dpot)
+{
+ return dpot->bdata.bops->read_d8(dpot->bdata.client);
+}
+
+static inline int dpot_read_r8d8(struct dpot_data *dpot, u8 reg)
+{
+ return dpot->bdata.bops->read_r8d8(dpot->bdata.client, reg);
+}
+
+static inline int dpot_read_r8d16(struct dpot_data *dpot, u8 reg)
+{
+ return dpot->bdata.bops->read_r8d16(dpot->bdata.client, reg);
+}
+
+static inline int dpot_write_d8(struct dpot_data *dpot, u8 val)
+{
+ return dpot->bdata.bops->write_d8(dpot->bdata.client, val);
+}
+
+static inline int dpot_write_r8d8(struct dpot_data *dpot, u8 reg, u16 val)
+{
+ return dpot->bdata.bops->write_r8d8(dpot->bdata.client, reg, val);
+}
+
+static inline int dpot_write_r8d16(struct dpot_data *dpot, u8 reg, u16 val)
+{
+ return dpot->bdata.bops->write_r8d16(dpot->bdata.client, reg, val);
+}
+
+static s32 dpot_read_spi(struct dpot_data *dpot, u8 reg)
+{
+ unsigned ctrl = 0;
+
+ if (!(reg & (DPOT_ADDR_EEPROM | DPOT_ADDR_CMD))) {
+
+ if (dpot->feat & F_RDACS_WONLY)
+ return dpot->rdac_cache[reg & DPOT_RDAC_MASK];
+
+ if (dpot->uid == DPOT_UID(AD5291_ID) ||
+ dpot->uid == DPOT_UID(AD5292_ID) ||
+ dpot->uid == DPOT_UID(AD5293_ID))
+ return dpot_read_r8d8(dpot,
+ DPOT_AD5291_READ_RDAC << 2);
+
+ ctrl = DPOT_SPI_READ_RDAC;
+ } else if (reg & DPOT_ADDR_EEPROM) {
+ ctrl = DPOT_SPI_READ_EEPROM;
+ }
+
+ if (dpot->feat & F_SPI_16BIT)
+ return dpot_read_r8d8(dpot, ctrl);
+ else if (dpot->feat & F_SPI_24BIT)
+ return dpot_read_r8d16(dpot, ctrl);
+
+ return -EFAULT;
+}
+
+static s32 dpot_read_i2c(struct dpot_data *dpot, u8 reg)
+{
+ unsigned ctrl = 0;
+ switch (dpot->uid) {
+ case DPOT_UID(AD5246_ID):
+ case DPOT_UID(AD5247_ID):
+ return dpot_read_d8(dpot);
+ case DPOT_UID(AD5245_ID):
+ case DPOT_UID(AD5241_ID):
+ case DPOT_UID(AD5242_ID):
+ case DPOT_UID(AD5243_ID):
+ case DPOT_UID(AD5248_ID):
+ case DPOT_UID(AD5280_ID):
+ case DPOT_UID(AD5282_ID):
+ ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ?
+ 0 : DPOT_AD5291_RDAC_AB;
+ return dpot_read_r8d8(dpot, ctrl);
+ case DPOT_UID(AD5170_ID):
+ case DPOT_UID(AD5171_ID):
+ case DPOT_UID(AD5273_ID):
+ return dpot_read_d8(dpot);
+ case DPOT_UID(AD5172_ID):
+ case DPOT_UID(AD5173_ID):
+ ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ?
+ 0 : DPOT_AD5272_3_A0;
+ return dpot_read_r8d8(dpot, ctrl);
+ default:
+ if ((reg & DPOT_REG_TOL) || (dpot->max_pos > 256))
+ return dpot_read_r8d16(dpot, (reg & 0xF8) |
+ ((reg & 0x7) << 1));
+ else
+ return dpot_read_r8d8(dpot, reg);
+ }
+}
+
+static s32 dpot_read(struct dpot_data *dpot, u8 reg)
+{
+ if (dpot->feat & F_SPI)
+ return dpot_read_spi(dpot, reg);
+ else
+ return dpot_read_i2c(dpot, reg);
+}
+
+static s32 dpot_write_spi(struct dpot_data *dpot, u8 reg, u16 value)
+{
+ unsigned val = 0;
+
+ if (!(reg & (DPOT_ADDR_EEPROM | DPOT_ADDR_CMD))) {
+ if (dpot->feat & F_RDACS_WONLY)
+ dpot->rdac_cache[reg & DPOT_RDAC_MASK] = value;
+
+ if (dpot->feat & F_AD_APPDATA) {
+ if (dpot->feat & F_SPI_8BIT) {
+ val = ((reg & DPOT_RDAC_MASK) <<
+ DPOT_MAX_POS(dpot->devid)) |
+ value;
+ return dpot_write_d8(dpot, val);
+ } else if (dpot->feat & F_SPI_16BIT) {
+ val = ((reg & DPOT_RDAC_MASK) <<
+ DPOT_MAX_POS(dpot->devid)) |
+ value;
+ return dpot_write_r8d8(dpot, val >> 8,
+ val & 0xFF);
+ } else
+ BUG();
+ } else {
+ if (dpot->uid == DPOT_UID(AD5291_ID) ||
+ dpot->uid == DPOT_UID(AD5292_ID) ||
+ dpot->uid == DPOT_UID(AD5293_ID))
+ return dpot_write_r8d8(dpot,
+ (DPOT_AD5291_RDAC << 2) |
+ (value >> 8), value & 0xFF);
+
+ val = DPOT_SPI_RDAC | (reg & DPOT_RDAC_MASK);
+ }
+ } else if (reg & DPOT_ADDR_EEPROM) {
+ val = DPOT_SPI_EEPROM | (reg & DPOT_RDAC_MASK);
+ } else if (reg & DPOT_ADDR_CMD) {
+ switch (reg) {
+ case DPOT_DEC_ALL_6DB:
+ val = DPOT_SPI_DEC_ALL_6DB;
+ break;
+ case DPOT_INC_ALL_6DB:
+ val = DPOT_SPI_INC_ALL_6DB;
+ break;
+ case DPOT_DEC_ALL:
+ val = DPOT_SPI_DEC_ALL;
+ break;
+ case DPOT_INC_ALL:
+ val = DPOT_SPI_INC_ALL;
+ break;
+ }
+ } else
+ BUG();
+
+ if (dpot->feat & F_SPI_16BIT)
+ return dpot_write_r8d8(dpot, val, value);
+ else if (dpot->feat & F_SPI_24BIT)
+ return dpot_write_r8d16(dpot, val, value);
+
+ return -EFAULT;
+}
+
+static s32 dpot_write_i2c(struct dpot_data *dpot, u8 reg, u16 value)
+{
+ /* Only write the instruction byte for certain commands */
+ unsigned tmp = 0, ctrl = 0;
+
+ switch (dpot->uid) {
+ case DPOT_UID(AD5246_ID):
+ case DPOT_UID(AD5247_ID):
+ return dpot_write_d8(dpot, value);
+ break;
+
+ case DPOT_UID(AD5245_ID):
+ case DPOT_UID(AD5241_ID):
+ case DPOT_UID(AD5242_ID):
+ case DPOT_UID(AD5243_ID):
+ case DPOT_UID(AD5248_ID):
+ case DPOT_UID(AD5280_ID):
+ case DPOT_UID(AD5282_ID):
+ ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ?
+ 0 : DPOT_AD5291_RDAC_AB;
+ return dpot_write_r8d8(dpot, ctrl, value);
+ break;
+ case DPOT_UID(AD5171_ID):
+ case DPOT_UID(AD5273_ID):
+ if (reg & DPOT_ADDR_OTP) {
+ tmp = dpot_read_d8(dpot);
+ if (tmp >> 6) /* Ready to Program? */
+ return -EFAULT;
+ ctrl = DPOT_AD5273_FUSE;
+ }
+ return dpot_write_r8d8(dpot, ctrl, value);
+ break;
+ case DPOT_UID(AD5172_ID):
+ case DPOT_UID(AD5173_ID):
+ ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ?
+ 0 : DPOT_AD5272_3_A0;
+ if (reg & DPOT_ADDR_OTP) {
+ tmp = dpot_read_r8d16(dpot, ctrl);
+ if (tmp >> 14) /* Ready to Program? */
+ return -EFAULT;
+ ctrl |= DPOT_AD5270_2_3_FUSE;
+ }
+ return dpot_write_r8d8(dpot, ctrl, value);
+ break;
+ case DPOT_UID(AD5170_ID):
+ if (reg & DPOT_ADDR_OTP) {
+ tmp = dpot_read_r8d16(dpot, tmp);
+ if (tmp >> 14) /* Ready to Program? */
+ return -EFAULT;
+ ctrl = DPOT_AD5270_2_3_FUSE;
+ }
+ return dpot_write_r8d8(dpot, ctrl, value);
+ break;
+ default:
+ if (reg & DPOT_ADDR_CMD)
+ return dpot_write_d8(dpot, reg);
+
+ if (dpot->max_pos > 256)
+ return dpot_write_r8d16(dpot, (reg & 0xF8) |
+ ((reg & 0x7) << 1), value);
+ else
+ /* All other registers require instruction + data bytes */
+ return dpot_write_r8d8(dpot, reg, value);
+ }
+}
+
+
+static s32 dpot_write(struct dpot_data *dpot, u8 reg, u16 value)
+{
+ if (dpot->feat & F_SPI)
+ return dpot_write_spi(dpot, reg, value);
+ else
+ return dpot_write_i2c(dpot, reg, value);
+}
+
/* sysfs functions */
static ssize_t sysfs_show_reg(struct device *dev,
- struct device_attribute *attr, char *buf, u32 reg)
+ struct device_attribute *attr,
+ char *buf, u32 reg)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dpot_data *data = i2c_get_clientdata(client);
+ struct dpot_data *data = dev_get_drvdata(dev);
s32 value;
+ if (reg & DPOT_ADDR_OTP_EN)
+ return sprintf(buf, "%s\n",
+ test_bit(DPOT_RDAC_MASK & reg, data->otp_en_mask) ?
+ "enabled" : "disabled");
+
+
mutex_lock(&data->update_lock);
- value = ad525x_read(client, reg);
+ value = dpot_read(data, reg);
mutex_unlock(&data->update_lock);
if (value < 0)
@@ -111,7 +358,7 @@ static ssize_t sysfs_show_reg(struct device *dev,
* datasheet (Rev. A) for more details.
*/
- if (reg & AD525X_REG_TOL)
+ if (reg & DPOT_REG_TOL)
return sprintf(buf, "0x%04x\n", value & 0xFFFF);
else
return sprintf(buf, "%u\n", value & data->rdac_mask);
@@ -121,11 +368,23 @@ static ssize_t sysfs_set_reg(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count, u32 reg)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dpot_data *data = i2c_get_clientdata(client);
+ struct dpot_data *data = dev_get_drvdata(dev);
unsigned long value;
int err;
+ if (reg & DPOT_ADDR_OTP_EN) {
+ if (!strncmp(buf, "enabled", sizeof("enabled")))
+ set_bit(DPOT_RDAC_MASK & reg, data->otp_en_mask);
+ else
+ clear_bit(DPOT_RDAC_MASK & reg, data->otp_en_mask);
+
+ return count;
+ }
+
+ if ((reg & DPOT_ADDR_OTP) &&
+ !test_bit(DPOT_RDAC_MASK & reg, data->otp_en_mask))
+ return -EPERM;
+
err = strict_strtoul(buf, 10, &value);
if (err)
return err;
@@ -134,9 +393,11 @@ static ssize_t sysfs_set_reg(struct device *dev,
value = data->rdac_mask;
mutex_lock(&data->update_lock);
- ad525x_write(client, reg, value);
- if (reg & AD525X_I2C_EEPROM)
+ dpot_write(data, reg, value);
+ if (reg & DPOT_ADDR_EEPROM)
msleep(26); /* Sleep while the EEPROM updates */
+ else if (reg & DPOT_ADDR_OTP)
+ msleep(400); /* Sleep while the OTP updates */
mutex_unlock(&data->update_lock);
return count;
@@ -146,11 +407,10 @@ static ssize_t sysfs_do_cmd(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count, u32 reg)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dpot_data *data = i2c_get_clientdata(client);
+ struct dpot_data *data = dev_get_drvdata(dev);
mutex_lock(&data->update_lock);
- ad525x_write(client, reg, 0);
+ dpot_write(data, reg, 0);
mutex_unlock(&data->update_lock);
return count;
@@ -158,244 +418,131 @@ static ssize_t sysfs_do_cmd(struct device *dev,
/* ------------------------------------------------------------------------- */
-static ssize_t show_rdac0(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC0);
-}
-
-static ssize_t set_rdac0(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_RDAC | AD525X_RDAC0);
-}
-
-static DEVICE_ATTR(rdac0, S_IWUSR | S_IRUGO, show_rdac0, set_rdac0);
-
-static ssize_t show_eeprom0(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC0);
-}
-
-static ssize_t set_eeprom0(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_EEPROM | AD525X_RDAC0);
-}
-
-static DEVICE_ATTR(eeprom0, S_IWUSR | S_IRUGO, show_eeprom0, set_eeprom0);
-
-static ssize_t show_tolerance0(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf,
- AD525X_I2C_EEPROM | AD525X_TOL_RDAC0);
-}
-
-static DEVICE_ATTR(tolerance0, S_IRUGO, show_tolerance0, NULL);
-
-/* ------------------------------------------------------------------------- */
-
-static ssize_t show_rdac1(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC1);
-}
-
-static ssize_t set_rdac1(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_RDAC | AD525X_RDAC1);
-}
-
-static DEVICE_ATTR(rdac1, S_IWUSR | S_IRUGO, show_rdac1, set_rdac1);
-
-static ssize_t show_eeprom1(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC1);
-}
-
-static ssize_t set_eeprom1(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_EEPROM | AD525X_RDAC1);
-}
-
-static DEVICE_ATTR(eeprom1, S_IWUSR | S_IRUGO, show_eeprom1, set_eeprom1);
-
-static ssize_t show_tolerance1(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf,
- AD525X_I2C_EEPROM | AD525X_TOL_RDAC1);
-}
-
-static DEVICE_ATTR(tolerance1, S_IRUGO, show_tolerance1, NULL);
-
-/* ------------------------------------------------------------------------- */
-
-static ssize_t show_rdac2(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC2);
-}
-
-static ssize_t set_rdac2(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_RDAC | AD525X_RDAC2);
-}
-
-static DEVICE_ATTR(rdac2, S_IWUSR | S_IRUGO, show_rdac2, set_rdac2);
-
-static ssize_t show_eeprom2(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC2);
-}
-
-static ssize_t set_eeprom2(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_EEPROM | AD525X_RDAC2);
-}
-
-static DEVICE_ATTR(eeprom2, S_IWUSR | S_IRUGO, show_eeprom2, set_eeprom2);
-
-static ssize_t show_tolerance2(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf,
- AD525X_I2C_EEPROM | AD525X_TOL_RDAC2);
-}
-
-static DEVICE_ATTR(tolerance2, S_IRUGO, show_tolerance2, NULL);
-
-/* ------------------------------------------------------------------------- */
-
-static ssize_t show_rdac3(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC3);
-}
-
-static ssize_t set_rdac3(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_RDAC | AD525X_RDAC3);
-}
-
-static DEVICE_ATTR(rdac3, S_IWUSR | S_IRUGO, show_rdac3, set_rdac3);
-
-static ssize_t show_eeprom3(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC3);
-}
-
-static ssize_t set_eeprom3(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_set_reg(dev, attr, buf, count,
- AD525X_I2C_EEPROM | AD525X_RDAC3);
-}
+#define DPOT_DEVICE_SHOW(_name, _reg) static ssize_t \
+show_##_name(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return sysfs_show_reg(dev, attr, buf, _reg); \
+}
+
+#define DPOT_DEVICE_SET(_name, _reg) static ssize_t \
+set_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return sysfs_set_reg(dev, attr, buf, count, _reg); \
+}
+
+#define DPOT_DEVICE_SHOW_SET(name, reg) \
+DPOT_DEVICE_SHOW(name, reg) \
+DPOT_DEVICE_SET(name, reg) \
+static DEVICE_ATTR(name, S_IWUSR | S_IRUGO, show_##name, set_##name);
+
+#define DPOT_DEVICE_SHOW_ONLY(name, reg) \
+DPOT_DEVICE_SHOW(name, reg) \
+static DEVICE_ATTR(name, S_IWUSR | S_IRUGO, show_##name, NULL);
+
+DPOT_DEVICE_SHOW_SET(rdac0, DPOT_ADDR_RDAC | DPOT_RDAC0);
+DPOT_DEVICE_SHOW_SET(eeprom0, DPOT_ADDR_EEPROM | DPOT_RDAC0);
+DPOT_DEVICE_SHOW_ONLY(tolerance0, DPOT_ADDR_EEPROM | DPOT_TOL_RDAC0);
+DPOT_DEVICE_SHOW_SET(otp0, DPOT_ADDR_OTP | DPOT_RDAC0);
+DPOT_DEVICE_SHOW_SET(otp0en, DPOT_ADDR_OTP_EN | DPOT_RDAC0);
+
+DPOT_DEVICE_SHOW_SET(rdac1, DPOT_ADDR_RDAC | DPOT_RDAC1);
+DPOT_DEVICE_SHOW_SET(eeprom1, DPOT_ADDR_EEPROM | DPOT_RDAC1);
+DPOT_DEVICE_SHOW_ONLY(tolerance1, DPOT_ADDR_EEPROM | DPOT_TOL_RDAC1);
+DPOT_DEVICE_SHOW_SET(otp1, DPOT_ADDR_OTP | DPOT_RDAC1);
+DPOT_DEVICE_SHOW_SET(otp1en, DPOT_ADDR_OTP_EN | DPOT_RDAC1);
+
+DPOT_DEVICE_SHOW_SET(rdac2, DPOT_ADDR_RDAC | DPOT_RDAC2);
+DPOT_DEVICE_SHOW_SET(eeprom2, DPOT_ADDR_EEPROM | DPOT_RDAC2);
+DPOT_DEVICE_SHOW_ONLY(tolerance2, DPOT_ADDR_EEPROM | DPOT_TOL_RDAC2);
+DPOT_DEVICE_SHOW_SET(otp2, DPOT_ADDR_OTP | DPOT_RDAC2);
+DPOT_DEVICE_SHOW_SET(otp2en, DPOT_ADDR_OTP_EN | DPOT_RDAC2);
+
+DPOT_DEVICE_SHOW_SET(rdac3, DPOT_ADDR_RDAC | DPOT_RDAC3);
+DPOT_DEVICE_SHOW_SET(eeprom3, DPOT_ADDR_EEPROM | DPOT_RDAC3);
+DPOT_DEVICE_SHOW_ONLY(tolerance3, DPOT_ADDR_EEPROM | DPOT_TOL_RDAC3);
+DPOT_DEVICE_SHOW_SET(otp3, DPOT_ADDR_OTP | DPOT_RDAC3);
+DPOT_DEVICE_SHOW_SET(otp3en, DPOT_ADDR_OTP_EN | DPOT_RDAC3);
+
+DPOT_DEVICE_SHOW_SET(rdac4, DPOT_ADDR_RDAC | DPOT_RDAC4);
+DPOT_DEVICE_SHOW_SET(eeprom4, DPOT_ADDR_EEPROM | DPOT_RDAC4);
+DPOT_DEVICE_SHOW_ONLY(tolerance4, DPOT_ADDR_EEPROM | DPOT_TOL_RDAC4);
+DPOT_DEVICE_SHOW_SET(otp4, DPOT_ADDR_OTP | DPOT_RDAC4);
+DPOT_DEVICE_SHOW_SET(otp4en, DPOT_ADDR_OTP_EN | DPOT_RDAC4);
+
+DPOT_DEVICE_SHOW_SET(rdac5, DPOT_ADDR_RDAC | DPOT_RDAC5);
+DPOT_DEVICE_SHOW_SET(eeprom5, DPOT_ADDR_EEPROM | DPOT_RDAC5);
+DPOT_DEVICE_SHOW_ONLY(tolerance5, DPOT_ADDR_EEPROM | DPOT_TOL_RDAC5);
+DPOT_DEVICE_SHOW_SET(otp5, DPOT_ADDR_OTP | DPOT_RDAC5);
+DPOT_DEVICE_SHOW_SET(otp5en, DPOT_ADDR_OTP_EN | DPOT_RDAC5);
+
+static const struct attribute *dpot_attrib_wipers[] = {
+ &dev_attr_rdac0.attr,
+ &dev_attr_rdac1.attr,
+ &dev_attr_rdac2.attr,
+ &dev_attr_rdac3.attr,
+ &dev_attr_rdac4.attr,
+ &dev_attr_rdac5.attr,
+ NULL
+};
-static DEVICE_ATTR(eeprom3, S_IWUSR | S_IRUGO, show_eeprom3, set_eeprom3);
+static const struct attribute *dpot_attrib_eeprom[] = {
+ &dev_attr_eeprom0.attr,
+ &dev_attr_eeprom1.attr,
+ &dev_attr_eeprom2.attr,
+ &dev_attr_eeprom3.attr,
+ &dev_attr_eeprom4.attr,
+ &dev_attr_eeprom5.attr,
+ NULL
+};
-static ssize_t show_tolerance3(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sysfs_show_reg(dev, attr, buf,
- AD525X_I2C_EEPROM | AD525X_TOL_RDAC3);
-}
+static const struct attribute *dpot_attrib_otp[] = {
+ &dev_attr_otp0.attr,
+ &dev_attr_otp1.attr,
+ &dev_attr_otp2.attr,
+ &dev_attr_otp3.attr,
+ &dev_attr_otp4.attr,
+ &dev_attr_otp5.attr,
+ NULL
+};
-static DEVICE_ATTR(tolerance3, S_IRUGO, show_tolerance3, NULL);
-
-static struct attribute *ad525x_attributes_wipers[4][4] = {
- {
- &dev_attr_rdac0.attr,
- &dev_attr_eeprom0.attr,
- &dev_attr_tolerance0.attr,
- NULL
- }, {
- &dev_attr_rdac1.attr,
- &dev_attr_eeprom1.attr,
- &dev_attr_tolerance1.attr,
- NULL
- }, {
- &dev_attr_rdac2.attr,
- &dev_attr_eeprom2.attr,
- &dev_attr_tolerance2.attr,
- NULL
- }, {
- &dev_attr_rdac3.attr,
- &dev_attr_eeprom3.attr,
- &dev_attr_tolerance3.attr,
- NULL
- }
+static const struct attribute *dpot_attrib_otp_en[] = {
+ &dev_attr_otp0en.attr,
+ &dev_attr_otp1en.attr,
+ &dev_attr_otp2en.attr,
+ &dev_attr_otp3en.attr,
+ &dev_attr_otp4en.attr,
+ &dev_attr_otp5en.attr,
+ NULL
};
-static const struct attribute_group ad525x_group_wipers[] = {
- {.attrs = ad525x_attributes_wipers[AD525X_RDAC0]},
- {.attrs = ad525x_attributes_wipers[AD525X_RDAC1]},
- {.attrs = ad525x_attributes_wipers[AD525X_RDAC2]},
- {.attrs = ad525x_attributes_wipers[AD525X_RDAC3]},
+static const struct attribute *dpot_attrib_tolerance[] = {
+ &dev_attr_tolerance0.attr,
+ &dev_attr_tolerance1.attr,
+ &dev_attr_tolerance2.attr,
+ &dev_attr_tolerance3.attr,
+ &dev_attr_tolerance4.attr,
+ &dev_attr_tolerance5.attr,
+ NULL
};
/* ------------------------------------------------------------------------- */
-static ssize_t set_inc_all(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_do_cmd(dev, attr, buf, count, AD525X_INC_ALL);
-}
+#define DPOT_DEVICE_DO_CMD(_name, _cmd) static ssize_t \
+set_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ return sysfs_do_cmd(dev, attr, buf, count, _cmd); \
+} \
+static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, NULL, set_##_name);
-static DEVICE_ATTR(inc_all, S_IWUSR, NULL, set_inc_all);
-
-static ssize_t set_dec_all(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_do_cmd(dev, attr, buf, count, AD525X_DEC_ALL);
-}
-
-static DEVICE_ATTR(dec_all, S_IWUSR, NULL, set_dec_all);
-
-static ssize_t set_inc_all_6db(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_do_cmd(dev, attr, buf, count, AD525X_INC_ALL_6DB);
-}
-
-static DEVICE_ATTR(inc_all_6db, S_IWUSR, NULL, set_inc_all_6db);
-
-static ssize_t set_dec_all_6db(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return sysfs_do_cmd(dev, attr, buf, count, AD525X_DEC_ALL_6DB);
-}
-
-static DEVICE_ATTR(dec_all_6db, S_IWUSR, NULL, set_dec_all_6db);
+DPOT_DEVICE_DO_CMD(inc_all, DPOT_INC_ALL);
+DPOT_DEVICE_DO_CMD(dec_all, DPOT_DEC_ALL);
+DPOT_DEVICE_DO_CMD(inc_all_6db, DPOT_INC_ALL_6DB);
+DPOT_DEVICE_DO_CMD(dec_all_6db, DPOT_DEC_ALL_6DB);
static struct attribute *ad525x_attributes_commands[] = {
&dev_attr_inc_all.attr,
@@ -409,74 +556,56 @@ static const struct attribute_group ad525x_group_commands = {
.attrs = ad525x_attributes_commands,
};
-/* ------------------------------------------------------------------------- */
-
-/* i2c device functions */
+__devinit int ad_dpot_add_files(struct device *dev,
+ unsigned features, unsigned rdac)
+{
+ int err = sysfs_create_file(&dev->kobj,
+ dpot_attrib_wipers[rdac]);
+ if (features & F_CMD_EEP)
+ err |= sysfs_create_file(&dev->kobj,
+ dpot_attrib_eeprom[rdac]);
+ if (features & F_CMD_TOL)
+ err |= sysfs_create_file(&dev->kobj,
+ dpot_attrib_tolerance[rdac]);
+ if (features & F_CMD_OTP) {
+ err |= sysfs_create_file(&dev->kobj,
+ dpot_attrib_otp_en[rdac]);
+ err |= sysfs_create_file(&dev->kobj,
+ dpot_attrib_otp[rdac]);
+ }
-/**
- * ad525x_read - return the value contained in the specified register
- * on the AD5258 device.
- * @client: value returned from i2c_new_device()
- * @reg: the register to read
- *
- * If the tolerance register is specified, 2 bytes are returned.
- * Otherwise, 1 byte is returned. A negative value indicates an error
- * occurred while reading the register.
- */
-static s32 ad525x_read(struct i2c_client *client, u8 reg)
-{
- struct dpot_data *data = i2c_get_clientdata(client);
+ if (err)
+ dev_err(dev, "failed to register sysfs hooks for RDAC%d\n",
+ rdac);
- if ((reg & AD525X_REG_TOL) || (data->max_pos > 256))
- return i2c_smbus_read_word_data(client, (reg & 0xF8) |
- ((reg & 0x7) << 1));
- else
- return i2c_smbus_read_byte_data(client, reg);
+ return err;
}
-/**
- * ad525x_write - store the given value in the specified register on
- * the AD5258 device.
- * @client: value returned from i2c_new_device()
- * @reg: the register to write
- * @value: the byte to store in the register
- *
- * For certain instructions that do not require a data byte, "NULL"
- * should be specified for the "value" parameter. These instructions
- * include NOP, RESTORE_FROM_EEPROM, and STORE_TO_EEPROM.
- *
- * A negative return value indicates an error occurred while reading
- * the register.
- */
-static s32 ad525x_write(struct i2c_client *client, u8 reg, u8 value)
-{
- struct dpot_data *data = i2c_get_clientdata(client);
-
- /* Only write the instruction byte for certain commands */
- if (reg & AD525X_I2C_CMD)
- return i2c_smbus_write_byte(client, reg);
-
- if (data->max_pos > 256)
- return i2c_smbus_write_word_data(client, (reg & 0xF8) |
- ((reg & 0x7) << 1), value);
- else
- /* All other registers require instruction + data bytes */
- return i2c_smbus_write_byte_data(client, reg, value);
+inline void ad_dpot_remove_files(struct device *dev,
+ unsigned features, unsigned rdac)
+{
+ sysfs_remove_file(&dev->kobj,
+ dpot_attrib_wipers[rdac]);
+ if (features & F_CMD_EEP)
+ sysfs_remove_file(&dev->kobj,
+ dpot_attrib_eeprom[rdac]);
+ if (features & F_CMD_TOL)
+ sysfs_remove_file(&dev->kobj,
+ dpot_attrib_tolerance[rdac]);
+ if (features & F_CMD_OTP) {
+ sysfs_remove_file(&dev->kobj,
+ dpot_attrib_otp_en[rdac]);
+ sysfs_remove_file(&dev->kobj,
+ dpot_attrib_otp[rdac]);
+ }
}
-static int ad525x_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+__devinit int ad_dpot_probe(struct device *dev,
+ struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id)
{
- struct device *dev = &client->dev;
- struct dpot_data *data;
- int err = 0;
- dev_dbg(dev, "%s\n", __func__);
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE)) {
- dev_err(dev, "missing I2C functionality for this driver\n");
- goto exit;
- }
+ struct dpot_data *data;
+ int i, err = 0;
data = kzalloc(sizeof(struct dpot_data), GFP_KERNEL);
if (!data) {
@@ -484,183 +613,74 @@ static int ad525x_probe(struct i2c_client *client,
goto exit;
}
- i2c_set_clientdata(client, data);
+ dev_set_drvdata(dev, data);
mutex_init(&data->update_lock);
- switch (id->driver_data) {
- case AD5258_ID:
- data->max_pos = AD5258_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- break;
- case AD5259_ID:
- data->max_pos = AD5259_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- break;
- case AD5251_ID:
- data->max_pos = AD5251_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC3]);
- err |= sysfs_create_group(&dev->kobj, &ad525x_group_commands);
- break;
- case AD5252_ID:
- data->max_pos = AD5252_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC3]);
- err |= sysfs_create_group(&dev->kobj, &ad525x_group_commands);
- break;
- case AD5253_ID:
- data->max_pos = AD5253_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC2]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC3]);
- err |= sysfs_create_group(&dev->kobj, &ad525x_group_commands);
- break;
- case AD5254_ID:
- data->max_pos = AD5254_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC2]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC3]);
- err |= sysfs_create_group(&dev->kobj, &ad525x_group_commands);
- break;
- case AD5255_ID:
- data->max_pos = AD5255_MAX_POSITION;
- err = sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- err |= sysfs_create_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC2]);
- err |= sysfs_create_group(&dev->kobj, &ad525x_group_commands);
- break;
- default:
- err = -ENODEV;
- goto exit_free;
- }
+ data->bdata = *bdata;
+ data->devid = id->devid;
+
+ data->max_pos = 1 << DPOT_MAX_POS(data->devid);
+ data->rdac_mask = data->max_pos - 1;
+ data->feat = DPOT_FEAT(data->devid);
+ data->uid = DPOT_UID(data->devid);
+ data->wipers = DPOT_WIPERS(data->devid);
+
+ for (i = DPOT_RDAC0; i < MAX_RDACS; i++)
+ if (data->wipers & (1 << i)) {
+ err = ad_dpot_add_files(dev, data->feat, i);
+ if (err)
+ goto exit_remove_files;
+ /* power-up midscale */
+ if (data->feat & F_RDACS_WONLY)
+ data->rdac_cache[i] = data->max_pos / 2;
+ }
+
+ if (data->feat & F_CMD_INC)
+ err = sysfs_create_group(&dev->kobj, &ad525x_group_commands);
if (err) {
dev_err(dev, "failed to register sysfs hooks\n");
goto exit_free;
}
- data->devid = id->driver_data;
- data->rdac_mask = data->max_pos - 1;
-
dev_info(dev, "%s %d-Position Digital Potentiometer registered\n",
id->name, data->max_pos);
return 0;
+exit_remove_files:
+ for (i = DPOT_RDAC0; i < MAX_RDACS; i++)
+ if (data->wipers & (1 << i))
+ ad_dpot_remove_files(dev, data->feat, i);
+
exit_free:
kfree(data);
- i2c_set_clientdata(client, NULL);
+ dev_set_drvdata(dev, NULL);
exit:
- dev_err(dev, "failed to create client\n");
+ dev_err(dev, "failed to create client for %s ID 0x%lX\n",
+ id->name, id->devid);
return err;
}
+EXPORT_SYMBOL(ad_dpot_probe);
-static int __devexit ad525x_remove(struct i2c_client *client)
+__devexit int ad_dpot_remove(struct device *dev)
{
- struct dpot_data *data = i2c_get_clientdata(client);
- struct device *dev = &client->dev;
-
- switch (data->devid) {
- case AD5258_ID:
- case AD5259_ID:
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- break;
- case AD5251_ID:
- case AD5252_ID:
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC3]);
- sysfs_remove_group(&dev->kobj, &ad525x_group_commands);
- break;
- case AD5253_ID:
- case AD5254_ID:
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC2]);
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC3]);
- sysfs_remove_group(&dev->kobj, &ad525x_group_commands);
- break;
- case AD5255_ID:
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC0]);
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC1]);
- sysfs_remove_group(&dev->kobj,
- &ad525x_group_wipers[AD525X_RDAC2]);
- sysfs_remove_group(&dev->kobj, &ad525x_group_commands);
- break;
- }
+ struct dpot_data *data = dev_get_drvdata(dev);
+ int i;
+
+ for (i = DPOT_RDAC0; i < MAX_RDACS; i++)
+ if (data->wipers & (1 << i))
+ ad_dpot_remove_files(dev, data->feat, i);
- i2c_set_clientdata(client, NULL);
kfree(data);
return 0;
}
+EXPORT_SYMBOL(ad_dpot_remove);
-static const struct i2c_device_id ad525x_idtable[] = {
- {"ad5258", AD5258_ID},
- {"ad5259", AD5259_ID},
- {"ad5251", AD5251_ID},
- {"ad5252", AD5252_ID},
- {"ad5253", AD5253_ID},
- {"ad5254", AD5254_ID},
- {"ad5255", AD5255_ID},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, ad525x_idtable);
-
-static struct i2c_driver ad525x_driver = {
- .driver = {
- .owner = THIS_MODULE,
- .name = DRIVER_NAME,
- },
- .id_table = ad525x_idtable,
- .probe = ad525x_probe,
- .remove = __devexit_p(ad525x_remove),
-};
-
-static int __init ad525x_init(void)
-{
- return i2c_add_driver(&ad525x_driver);
-}
-
-module_init(ad525x_init);
-
-static void __exit ad525x_exit(void)
-{
- i2c_del_driver(&ad525x_driver);
-}
-
-module_exit(ad525x_exit);
MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>, "
- "Michael Hennerich <hennerich@blackfin.uclinux.org>, ");
-MODULE_DESCRIPTION("AD5258/9 digital potentiometer driver");
+ "Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Digital potentiometer driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/misc/ad525x_dpot.h b/drivers/misc/ad525x_dpot.h
new file mode 100644
index 00000000000..78b89fd2e2f
--- /dev/null
+++ b/drivers/misc/ad525x_dpot.h
@@ -0,0 +1,202 @@
+/*
+ * Driver for the Analog Devices digital potentiometers
+ *
+ * Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _AD_DPOT_H_
+#define _AD_DPOT_H_
+
+#include <linux/types.h>
+
+#define DPOT_CONF(features, wipers, max_pos, uid) \
+ (((features) << 18) | (((wipers) & 0xFF) << 10) | \
+ ((max_pos & 0xF) << 6) | (uid & 0x3F))
+
+#define DPOT_UID(conf) (conf & 0x3F)
+#define DPOT_MAX_POS(conf) ((conf >> 6) & 0xF)
+#define DPOT_WIPERS(conf) ((conf >> 10) & 0xFF)
+#define DPOT_FEAT(conf) (conf >> 18)
+
+#define BRDAC0 (1 << 0)
+#define BRDAC1 (1 << 1)
+#define BRDAC2 (1 << 2)
+#define BRDAC3 (1 << 3)
+#define BRDAC4 (1 << 4)
+#define BRDAC5 (1 << 5)
+#define MAX_RDACS 6
+
+#define F_CMD_INC (1 << 0) /* Features INC/DEC ALL, 6dB */
+#define F_CMD_EEP (1 << 1) /* Features EEPROM */
+#define F_CMD_OTP (1 << 2) /* Features OTP */
+#define F_CMD_TOL (1 << 3) /* RDACS feature Tolerance REG */
+#define F_RDACS_RW (1 << 4) /* RDACS are Read/Write */
+#define F_RDACS_WONLY (1 << 5) /* RDACS are Write only */
+#define F_AD_APPDATA (1 << 6) /* RDAC Address append to data */
+#define F_SPI_8BIT (1 << 7) /* All SPI XFERS are 8-bit */
+#define F_SPI_16BIT (1 << 8) /* All SPI XFERS are 16-bit */
+#define F_SPI_24BIT (1 << 9) /* All SPI XFERS are 24-bit */
+
+#define F_RDACS_RW_TOL (F_RDACS_RW | F_CMD_EEP | F_CMD_TOL)
+#define F_RDACS_RW_EEP (F_RDACS_RW | F_CMD_EEP)
+#define F_SPI (F_SPI_8BIT | F_SPI_16BIT | F_SPI_24BIT)
+
+enum dpot_devid {
+ AD5258_ID = DPOT_CONF(F_RDACS_RW_TOL, BRDAC0, 6, 0), /* I2C */
+ AD5259_ID = DPOT_CONF(F_RDACS_RW_TOL, BRDAC0, 8, 1),
+ AD5251_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
+ BRDAC0 | BRDAC3, 6, 2),
+ AD5252_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
+ BRDAC0 | BRDAC3, 8, 3),
+ AD5253_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 4),
+ AD5254_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 5),
+ AD5255_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
+ BRDAC0 | BRDAC1 | BRDAC2, 9, 6),
+ AD5160_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 7), /* SPI */
+ AD5161_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 8),
+ AD5162_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1, 8, 9),
+ AD5165_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 10),
+ AD5200_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 11),
+ AD5201_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 5, 12),
+ AD5203_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 13),
+ AD5204_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 14),
+ AD5206_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3 | BRDAC4 | BRDAC5,
+ 8, 15),
+ AD5207_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1, 8, 16),
+ AD5231_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
+ BRDAC0, 10, 17),
+ AD5232_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_16BIT,
+ BRDAC0 | BRDAC1, 8, 18),
+ AD5233_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_16BIT,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 19),
+ AD5235_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
+ BRDAC0 | BRDAC1, 10, 20),
+ AD5260_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 21),
+ AD5262_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1, 8, 22),
+ AD5263_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 23),
+ AD5290_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 24),
+ AD5291_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 8, 25),
+ AD5292_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 10, 26),
+ AD5293_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 10, 27),
+ AD7376_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 7, 28),
+ AD8400_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
+ BRDAC0, 8, 29),
+ AD8402_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1, 8, 30),
+ AD8403_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
+ BRDAC0 | BRDAC1 | BRDAC2, 8, 31),
+ ADN2850_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
+ BRDAC0 | BRDAC1, 10, 32),
+ AD5241_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 33),
+ AD5242_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 34),
+ AD5243_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 35),
+ AD5245_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 36),
+ AD5246_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 37),
+ AD5247_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 38),
+ AD5248_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 39),
+ AD5280_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 40),
+ AD5282_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 41),
+ ADN2860_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
+ BRDAC0 | BRDAC1 | BRDAC2, 9, 42),
+ AD5273_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 43),
+ AD5171_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 44),
+ AD5170_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 8, 45),
+ AD5172_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 46),
+ AD5173_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 47),
+};
+
+#define DPOT_RDAC0 0
+#define DPOT_RDAC1 1
+#define DPOT_RDAC2 2
+#define DPOT_RDAC3 3
+#define DPOT_RDAC4 4
+#define DPOT_RDAC5 5
+
+#define DPOT_RDAC_MASK 0x1F
+
+#define DPOT_REG_TOL 0x18
+#define DPOT_TOL_RDAC0 (DPOT_REG_TOL | DPOT_RDAC0)
+#define DPOT_TOL_RDAC1 (DPOT_REG_TOL | DPOT_RDAC1)
+#define DPOT_TOL_RDAC2 (DPOT_REG_TOL | DPOT_RDAC2)
+#define DPOT_TOL_RDAC3 (DPOT_REG_TOL | DPOT_RDAC3)
+#define DPOT_TOL_RDAC4 (DPOT_REG_TOL | DPOT_RDAC4)
+#define DPOT_TOL_RDAC5 (DPOT_REG_TOL | DPOT_RDAC5)
+
+/* RDAC-to-EEPROM Interface Commands */
+#define DPOT_ADDR_RDAC (0x0 << 5)
+#define DPOT_ADDR_EEPROM (0x1 << 5)
+#define DPOT_ADDR_OTP (0x1 << 6)
+#define DPOT_ADDR_CMD (0x1 << 7)
+#define DPOT_ADDR_OTP_EN (0x1 << 9)
+
+#define DPOT_DEC_ALL_6DB (DPOT_ADDR_CMD | (0x4 << 3))
+#define DPOT_INC_ALL_6DB (DPOT_ADDR_CMD | (0x9 << 3))
+#define DPOT_DEC_ALL (DPOT_ADDR_CMD | (0x6 << 3))
+#define DPOT_INC_ALL (DPOT_ADDR_CMD | (0xB << 3))
+
+#define DPOT_SPI_RDAC 0xB0
+#define DPOT_SPI_EEPROM 0x30
+#define DPOT_SPI_READ_RDAC 0xA0
+#define DPOT_SPI_READ_EEPROM 0x90
+#define DPOT_SPI_DEC_ALL_6DB 0x50
+#define DPOT_SPI_INC_ALL_6DB 0xD0
+#define DPOT_SPI_DEC_ALL 0x70
+#define DPOT_SPI_INC_ALL 0xF0
+
+/* AD5291/2/3 use special commands */
+#define DPOT_AD5291_RDAC 0x01
+#define DPOT_AD5291_READ_RDAC 0x02
+
+/* AD524x use special commands */
+#define DPOT_AD5291_RDAC_AB 0x80
+
+#define DPOT_AD5273_FUSE 0x80
+#define DPOT_AD5270_2_3_FUSE 0x20
+#define DPOT_AD5270_2_3_OW 0x08
+#define DPOT_AD5272_3_A0 0x08
+#define DPOT_AD5270_2FUSE 0x80
+
+struct dpot_data;
+
+struct ad_dpot_bus_ops {
+ int (*read_d8) (void *client);
+ int (*read_r8d8) (void *client, u8 reg);
+ int (*read_r8d16) (void *client, u8 reg);
+ int (*write_d8) (void *client, u8 val);
+ int (*write_r8d8) (void *client, u8 reg, u8 val);
+ int (*write_r8d16) (void *client, u8 reg, u16 val);
+};
+
+struct ad_dpot_bus_data {
+ void *client;
+ const struct ad_dpot_bus_ops *bops;
+};
+
+struct ad_dpot_id {
+ char *name;
+ unsigned long devid;
+};
+
+int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id);
+int ad_dpot_remove(struct device *dev);
+
+#endif
diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
index ed090e77c9c..19fc7c1cb42 100644
--- a/drivers/misc/c2port/core.c
+++ b/drivers/misc/c2port/core.c
@@ -707,7 +707,7 @@ static ssize_t __c2port_read_flash_data(struct c2port_device *dev,
return nread;
}
-static ssize_t c2port_read_flash_data(struct kobject *kobj,
+static ssize_t c2port_read_flash_data(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buffer, loff_t offset, size_t count)
{
@@ -824,7 +824,7 @@ static ssize_t __c2port_write_flash_data(struct c2port_device *dev,
return nwrite;
}
-static ssize_t c2port_write_flash_data(struct kobject *kobj,
+static ssize_t c2port_write_flash_data(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buffer, loff_t offset, size_t count)
{
diff --git a/drivers/misc/ds1682.c b/drivers/misc/ds1682.c
index 9197cfc5501..a513f0aa643 100644
--- a/drivers/misc/ds1682.c
+++ b/drivers/misc/ds1682.c
@@ -140,7 +140,8 @@ static const struct attribute_group ds1682_group = {
/*
* User data attribute
*/
-static ssize_t ds1682_eeprom_read(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t ds1682_eeprom_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct i2c_client *client = kobj_to_i2c_client(kobj);
@@ -163,7 +164,8 @@ static ssize_t ds1682_eeprom_read(struct kobject *kobj, struct bin_attribute *at
return count;
}
-static ssize_t ds1682_eeprom_write(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t ds1682_eeprom_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct i2c_client *client = kobj_to_i2c_client(kobj);
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index db7d0f21b65..f7ca3a42b49 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -54,7 +54,7 @@
struct at24_data {
struct at24_platform_data chip;
struct memory_accessor macc;
- bool use_smbus;
+ int use_smbus;
/*
* Lock protects against activities from other Linux tasks,
@@ -184,11 +184,19 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf,
if (count > io_limit)
count = io_limit;
- if (at24->use_smbus) {
+ switch (at24->use_smbus) {
+ case I2C_SMBUS_I2C_BLOCK_DATA:
/* Smaller eeproms can work given some SMBus extension calls */
if (count > I2C_SMBUS_BLOCK_MAX)
count = I2C_SMBUS_BLOCK_MAX;
- } else {
+ break;
+ case I2C_SMBUS_WORD_DATA:
+ count = 2;
+ break;
+ case I2C_SMBUS_BYTE_DATA:
+ count = 1;
+ break;
+ default:
/*
* When we have a better choice than SMBus calls, use a
* combined I2C message. Write address; then read up to
@@ -219,10 +227,27 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf,
timeout = jiffies + msecs_to_jiffies(write_timeout);
do {
read_time = jiffies;
- if (at24->use_smbus) {
+ switch (at24->use_smbus) {
+ case I2C_SMBUS_I2C_BLOCK_DATA:
status = i2c_smbus_read_i2c_block_data(client, offset,
count, buf);
- } else {
+ break;
+ case I2C_SMBUS_WORD_DATA:
+ status = i2c_smbus_read_word_data(client, offset);
+ if (status >= 0) {
+ buf[0] = status & 0xff;
+ buf[1] = status >> 8;
+ status = count;
+ }
+ break;
+ case I2C_SMBUS_BYTE_DATA:
+ status = i2c_smbus_read_byte_data(client, offset);
+ if (status >= 0) {
+ buf[0] = status;
+ status = count;
+ }
+ break;
+ default:
status = i2c_transfer(client->adapter, msg, 2);
if (status == 2)
status = count;
@@ -274,7 +299,8 @@ static ssize_t at24_read(struct at24_data *at24,
return retval;
}
-static ssize_t at24_bin_read(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t at24_bin_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct at24_data *at24;
@@ -395,7 +421,8 @@ static ssize_t at24_write(struct at24_data *at24, const char *buf, loff_t off,
return retval;
}
-static ssize_t at24_bin_write(struct kobject *kobj, struct bin_attribute *attr,
+static ssize_t at24_bin_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
struct at24_data *at24;
@@ -434,7 +461,7 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct at24_platform_data chip;
bool writable;
- bool use_smbus = false;
+ int use_smbus = 0;
struct at24_data *at24;
int err;
unsigned i, num_addresses;
@@ -475,12 +502,19 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
err = -EPFNOSUPPORT;
goto err_out;
}
- if (!i2c_check_functionality(client->adapter,
+ if (i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
+ use_smbus = I2C_SMBUS_I2C_BLOCK_DATA;
+ } else if (i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_WORD_DATA)) {
+ use_smbus = I2C_SMBUS_WORD_DATA;
+ } else if (i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
+ use_smbus = I2C_SMBUS_BYTE_DATA;
+ } else {
err = -EPFNOSUPPORT;
goto err_out;
}
- use_smbus = true;
}
if (chip.flags & AT24_FLAG_TAKE8ADDR)
@@ -566,11 +600,16 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
dev_info(&client->dev, "%zu byte %s EEPROM %s\n",
at24->bin.size, client->name,
writable ? "(writable)" : "(read-only)");
+ if (use_smbus == I2C_SMBUS_WORD_DATA ||
+ use_smbus == I2C_SMBUS_BYTE_DATA) {
+ dev_notice(&client->dev, "Falling back to %s reads, "
+ "performance will suffer\n", use_smbus ==
+ I2C_SMBUS_WORD_DATA ? "word" : "byte");
+ }
dev_dbg(&client->dev,
- "page_size %d, num_addresses %d, write_max %d%s\n",
+ "page_size %d, num_addresses %d, write_max %d, use_smbus %d\n",
chip.page_size, num_addresses,
- at24->write_max,
- use_smbus ? ", use_smbus" : "");
+ at24->write_max, use_smbus);
/* export data to kernel code */
if (chip.setup)
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index d194212a41f..c627e4174cc 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -126,7 +126,8 @@ at25_ee_read(
}
static ssize_t
-at25_bin_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+at25_bin_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev;
@@ -253,7 +254,8 @@ at25_ee_write(struct at25_data *at25, const char *buf, loff_t off,
}
static ssize_t
-at25_bin_write(struct kobject *kobj, struct bin_attribute *bin_attr,
+at25_bin_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev;
diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c
index f939ebc2507..45060ddc4e5 100644
--- a/drivers/misc/eeprom/eeprom.c
+++ b/drivers/misc/eeprom/eeprom.c
@@ -1,24 +1,20 @@
/*
- Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and
- Philip Edelbrock <phil@netroedge.com>
- Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- Copyright (C) 2003 IBM Corp.
- Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+ * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and
+ * Philip Edelbrock <phil@netroedge.com>
+ * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003 IBM Corp.
+ * Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
+ *
+ * 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.
+ */
#include <linux/kernel.h>
#include <linux/init.h>
@@ -85,7 +81,8 @@ exit:
mutex_unlock(&data->update_lock);
}
-static ssize_t eeprom_read(struct kobject *kobj, struct bin_attribute *bin_attr,
+static ssize_t eeprom_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct i2c_client *client = to_i2c_client(container_of(kobj, struct device, kobj));
diff --git a/drivers/misc/eeprom/eeprom_93cx6.c b/drivers/misc/eeprom/eeprom_93cx6.c
index 15b1780025c..7b33de95c4b 100644
--- a/drivers/misc/eeprom/eeprom_93cx6.c
+++ b/drivers/misc/eeprom/eeprom_93cx6.c
@@ -1,27 +1,20 @@
/*
- Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
- <http://rt2x00.serialmonkey.com>
-
- 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.,
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-/*
- Module: eeprom_93cx6
- Abstract: EEPROM reader routines for 93cx6 chipsets.
- Supported chipsets: 93c46 & 93c66.
+ * Copyright (C) 2004 - 2006 rt2x00 SourceForge Project
+ * <http://rt2x00.serialmonkey.com>
+ *
+ * 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.
+ *
+ * Module: eeprom_93cx6
+ * Abstract: EEPROM reader routines for 93cx6 chipsets.
+ * Supported chipsets: 93c46 & 93c66.
*/
#include <linux/kernel.h>
diff --git a/drivers/misc/eeprom/max6875.c b/drivers/misc/eeprom/max6875.c
index 5a6b2bce8ad..5653a3ce051 100644
--- a/drivers/misc/eeprom/max6875.c
+++ b/drivers/misc/eeprom/max6875.c
@@ -1,30 +1,30 @@
/*
- max6875.c - driver for MAX6874/MAX6875
-
- Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
-
- Based on eeprom.c
-
- The MAX6875 has a bank of registers and two banks of EEPROM.
- Address ranges are defined as follows:
- * 0x0000 - 0x0046 = configuration registers
- * 0x8000 - 0x8046 = configuration EEPROM
- * 0x8100 - 0x82FF = user EEPROM
-
- This driver makes the user EEPROM available for read.
-
- The registers & config EEPROM should be accessed via i2c-dev.
-
- The MAX6875 ignores the lowest address bit, so each chip responds to
- two addresses - 0x50/0x51 and 0x52/0x53.
-
- Note that the MAX6875 uses i2c_smbus_write_byte_data() to set the read
- address, so this driver is destructive if loaded for the wrong EEPROM chip.
-
- 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; version 2 of the License.
-*/
+ * max6875.c - driver for MAX6874/MAX6875
+ *
+ * Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
+ *
+ * Based on eeprom.c
+ *
+ * The MAX6875 has a bank of registers and two banks of EEPROM.
+ * Address ranges are defined as follows:
+ * * 0x0000 - 0x0046 = configuration registers
+ * * 0x8000 - 0x8046 = configuration EEPROM
+ * * 0x8100 - 0x82FF = user EEPROM
+ *
+ * This driver makes the user EEPROM available for read.
+ *
+ * The registers & config EEPROM should be accessed via i2c-dev.
+ *
+ * The MAX6875 ignores the lowest address bit, so each chip responds to
+ * two addresses - 0x50/0x51 and 0x52/0x53.
+ *
+ * Note that the MAX6875 uses i2c_smbus_write_byte_data() to set the read
+ * address, so this driver is destructive if loaded for the wrong EEPROM chip.
+ *
+ * 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; version 2 of the License.
+ */
#include <linux/kernel.h>
#include <linux/init.h>
@@ -107,7 +107,7 @@ exit_up:
mutex_unlock(&data->update_lock);
}
-static ssize_t max6875_read(struct kobject *kobj,
+static ssize_t max6875_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
diff --git a/drivers/misc/hdpuftrs/Makefile b/drivers/misc/hdpuftrs/Makefile
deleted file mode 100644
index ac74ae67923..00000000000
--- a/drivers/misc/hdpuftrs/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_HDPU_FEATURES) := hdpu_cpustate.o hdpu_nexus.o
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c
deleted file mode 100644
index 176fe4e09d3..00000000000
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/*
- * Sky CPU State Driver
- *
- * Copyright (C) 2002 Brian Waite
- *
- * This driver allows use of the CPU state bits
- * It exports the /dev/sky_cpustate and also
- * /proc/sky_cpustate pseudo-file for status information.
- *
- * 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/module.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
-#include <linux/miscdevice.h>
-#include <linux/proc_fs.h>
-#include <linux/hdpu_features.h>
-#include <linux/platform_device.h>
-#include <asm/uaccess.h>
-#include <linux/seq_file.h>
-#include <asm/io.h>
-
-#define SKY_CPUSTATE_VERSION "1.1"
-
-static int hdpu_cpustate_probe(struct platform_device *pdev);
-static int hdpu_cpustate_remove(struct platform_device *pdev);
-
-static unsigned char cpustate_get_state(void);
-static int cpustate_proc_open(struct inode *inode, struct file *file);
-static int cpustate_proc_read(struct seq_file *seq, void *offset);
-
-static struct cpustate_t cpustate;
-
-static const struct file_operations proc_cpustate = {
- .open = cpustate_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
-static int cpustate_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, cpustate_proc_read, NULL);
-}
-
-static int cpustate_proc_read(struct seq_file *seq, void *offset)
-{
- seq_printf(seq, "CPU State: %04x\n", cpustate_get_state());
- return 0;
-}
-
-static int cpustate_get_ref(int excl)
-{
-
- int retval = -EBUSY;
-
- spin_lock(&cpustate.lock);
-
- if (cpustate.excl)
- goto out_busy;
-
- if (excl) {
- if (cpustate.open_count)
- goto out_busy;
- cpustate.excl = 1;
- }
-
- cpustate.open_count++;
- retval = 0;
-
- out_busy:
- spin_unlock(&cpustate.lock);
- return retval;
-}
-
-static int cpustate_free_ref(void)
-{
-
- spin_lock(&cpustate.lock);
-
- cpustate.excl = 0;
- cpustate.open_count--;
-
- spin_unlock(&cpustate.lock);
- return 0;
-}
-
-static unsigned char cpustate_get_state(void)
-{
-
- return cpustate.cached_val;
-}
-
-static void cpustate_set_state(unsigned char new_state)
-{
- unsigned int state = (new_state << 21);
-
-#ifdef DEBUG_CPUSTATE
- printk("CPUSTATE -> 0x%x\n", new_state);
-#endif
- spin_lock(&cpustate.lock);
- cpustate.cached_val = new_state;
- writel((0xff << 21), cpustate.clr_addr);
- writel(state, cpustate.set_addr);
- spin_unlock(&cpustate.lock);
-}
-
-/*
- * Now all the various file operations that we export.
- */
-
-static ssize_t cpustate_read(struct file *file, char *buf,
- size_t count, loff_t * ppos)
-{
- unsigned char data;
-
- if (count < 0)
- return -EFAULT;
- if (count == 0)
- return 0;
-
- data = cpustate_get_state();
- if (copy_to_user(buf, &data, sizeof(unsigned char)))
- return -EFAULT;
- return sizeof(unsigned char);
-}
-
-static ssize_t cpustate_write(struct file *file, const char *buf,
- size_t count, loff_t * ppos)
-{
- unsigned char data;
-
- if (count < 0)
- return -EFAULT;
-
- if (count == 0)
- return 0;
-
- if (copy_from_user((unsigned char *)&data, buf, sizeof(unsigned char)))
- return -EFAULT;
-
- cpustate_set_state(data);
- return sizeof(unsigned char);
-}
-
-static int cpustate_open(struct inode *inode, struct file *file)
-{
- int ret;
-
- lock_kernel();
- ret = cpustate_get_ref((file->f_flags & O_EXCL));
- unlock_kernel();
-
- return ret;
-}
-
-static int cpustate_release(struct inode *inode, struct file *file)
-{
- return cpustate_free_ref();
-}
-
-static struct platform_driver hdpu_cpustate_driver = {
- .probe = hdpu_cpustate_probe,
- .remove = hdpu_cpustate_remove,
- .driver = {
- .name = HDPU_CPUSTATE_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-/*
- * The various file operations we support.
- */
-static const struct file_operations cpustate_fops = {
- .owner = THIS_MODULE,
- .open = cpustate_open,
- .release = cpustate_release,
- .read = cpustate_read,
- .write = cpustate_write,
- .llseek = no_llseek,
-};
-
-static struct miscdevice cpustate_dev = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "sky_cpustate",
- .fops = &cpustate_fops,
-};
-
-static int hdpu_cpustate_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct proc_dir_entry *proc_de;
- int ret;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- printk(KERN_ERR "sky_cpustate: "
- "Invalid memory resource.\n");
- return -EINVAL;
- }
- cpustate.set_addr = (unsigned long *)res->start;
- cpustate.clr_addr = (unsigned long *)res->end - 1;
-
- ret = misc_register(&cpustate_dev);
- if (ret) {
- printk(KERN_WARNING "sky_cpustate: "
- "Unable to register misc device.\n");
- cpustate.set_addr = NULL;
- cpustate.clr_addr = NULL;
- return ret;
- }
-
- proc_de = proc_create("sky_cpustate", 0666, NULL, &proc_cpustate);
- if (!proc_de) {
- printk(KERN_WARNING "sky_cpustate: "
- "Unable to create proc entry\n");
- }
-
- printk(KERN_INFO "Sky CPU State Driver v" SKY_CPUSTATE_VERSION "\n");
- return 0;
-}
-
-static int hdpu_cpustate_remove(struct platform_device *pdev)
-{
- cpustate.set_addr = NULL;
- cpustate.clr_addr = NULL;
-
- remove_proc_entry("sky_cpustate", NULL);
- misc_deregister(&cpustate_dev);
-
- return 0;
-}
-
-static int __init cpustate_init(void)
-{
- return platform_driver_register(&hdpu_cpustate_driver);
-}
-
-static void __exit cpustate_exit(void)
-{
- platform_driver_unregister(&hdpu_cpustate_driver);
-}
-
-module_init(cpustate_init);
-module_exit(cpustate_exit);
-
-MODULE_AUTHOR("Brian Waite");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" HDPU_CPUSTATE_NAME);
diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
deleted file mode 100644
index ce39fa54949..00000000000
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Sky Nexus Register Driver
- *
- * Copyright (C) 2002 Brian Waite
- *
- * This driver allows reading the Nexus register
- * It exports the /proc/sky_chassis_id and also
- * /proc/sky_slot_id pseudo-file for status information.
- *
- * 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/module.h>
-#include <linux/kernel.h>
-#include <linux/proc_fs.h>
-#include <linux/hdpu_features.h>
-#include <linux/platform_device.h>
-#include <linux/seq_file.h>
-#include <asm/io.h>
-
-static int hdpu_nexus_probe(struct platform_device *pdev);
-static int hdpu_nexus_remove(struct platform_device *pdev);
-static int hdpu_slot_id_open(struct inode *inode, struct file *file);
-static int hdpu_slot_id_read(struct seq_file *seq, void *offset);
-static int hdpu_chassis_id_open(struct inode *inode, struct file *file);
-static int hdpu_chassis_id_read(struct seq_file *seq, void *offset);
-
-static struct proc_dir_entry *hdpu_slot_id;
-static struct proc_dir_entry *hdpu_chassis_id;
-static int slot_id = -1;
-static int chassis_id = -1;
-
-static const struct file_operations proc_slot_id = {
- .open = hdpu_slot_id_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
-static const struct file_operations proc_chassis_id = {
- .open = hdpu_chassis_id_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .owner = THIS_MODULE,
-};
-
-static struct platform_driver hdpu_nexus_driver = {
- .probe = hdpu_nexus_probe,
- .remove = hdpu_nexus_remove,
- .driver = {
- .name = HDPU_NEXUS_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-static int hdpu_slot_id_open(struct inode *inode, struct file *file)
-{
- return single_open(file, hdpu_slot_id_read, NULL);
-}
-
-static int hdpu_slot_id_read(struct seq_file *seq, void *offset)
-{
- seq_printf(seq, "%d\n", slot_id);
- return 0;
-}
-
-static int hdpu_chassis_id_open(struct inode *inode, struct file *file)
-{
- return single_open(file, hdpu_chassis_id_read, NULL);
-}
-
-static int hdpu_chassis_id_read(struct seq_file *seq, void *offset)
-{
- seq_printf(seq, "%d\n", chassis_id);
- return 0;
-}
-
-static int hdpu_nexus_probe(struct platform_device *pdev)
-{
- struct resource *res;
- int *nexus_id_addr;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- printk(KERN_ERR "sky_nexus: "
- "Invalid memory resource.\n");
- return -EINVAL;
- }
- nexus_id_addr = ioremap(res->start,
- (unsigned long)(res->end - res->start));
- if (nexus_id_addr) {
- slot_id = (*nexus_id_addr >> 8) & 0x1f;
- chassis_id = *nexus_id_addr & 0xff;
- iounmap(nexus_id_addr);
- } else {
- printk(KERN_ERR "sky_nexus: Could not map slot id\n");
- }
-
- hdpu_slot_id = proc_create("sky_slot_id", 0666, NULL, &proc_slot_id);
- if (!hdpu_slot_id) {
- printk(KERN_WARNING "sky_nexus: "
- "Unable to create proc dir entry: sky_slot_id\n");
- }
-
- hdpu_chassis_id = proc_create("sky_chassis_id", 0666, NULL,
- &proc_chassis_id);
- if (!hdpu_chassis_id)
- printk(KERN_WARNING "sky_nexus: "
- "Unable to create proc dir entry: sky_chassis_id\n");
-
- return 0;
-}
-
-static int hdpu_nexus_remove(struct platform_device *pdev)
-{
- slot_id = -1;
- chassis_id = -1;
-
- remove_proc_entry("sky_slot_id", NULL);
- remove_proc_entry("sky_chassis_id", NULL);
-
- hdpu_slot_id = 0;
- hdpu_chassis_id = 0;
-
- return 0;
-}
-
-static int __init nexus_init(void)
-{
- return platform_driver_register(&hdpu_nexus_driver);
-}
-
-static void __exit nexus_exit(void)
-{
- platform_driver_unregister(&hdpu_nexus_driver);
-}
-
-module_init(nexus_init);
-module_exit(nexus_exit);
-
-MODULE_AUTHOR("Brian Waite");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" HDPU_NEXUS_NAME);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-17 11:28:30 +0000