aboutsummaryrefslogtreecommitdiff
path: root/drivers/i2c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 18:19:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 18:19:05 -0700
commit61464c8357c8f6b780e4c44f5c79471799c51ca7 (patch)
tree4509cf075403965528f380f2f825c46908fb7d4e /drivers/i2c
parent47061eda2584b9e4516d1e3a9713406a3a559ac8 (diff)
parent9cf1c871526cf6bfec2a653e1e068ee72592542c (diff)
downloadlinux-linaro-stable-61464c8357c8f6b780e4c44f5c79471799c51ca7.tar.gz
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc general cleanups from Olof Johansson: "This is a large branch that contains a handful of different cleanups: - Fixing up the I/O space remapping on PCI on ARM. This is a series from Rob Herring that restructures how all pci devices allocate I/O space, and it's part of the work to allow multiplatform kernels. - A number of cleanup series for OMAP, moving and removing some headers, sparse irq rework and in general preparation for multiplatform. - Final removal of all non-DT boards for Tegra, it is now device-tree-only! - Removal of a stale platform, nxp4008. It's an old mobile chipset that is no longer in use, and was very likely never really used with a mainline kernel. We have not been able to find anyone interested in keeping it around in the kernel. - Removal of the legacy dmaengine driver on tegra + A handful of other things that I haven't described above." Fix up some conflicts with the staging tree (and because nxp4008 was removed) * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (184 commits) ARM: OMAP2+: serial: Change MAX_HSUART_PORTS to 6 ARM: OMAP4: twl-common: Support for additional devices on i2c1 bus ARM: mmp: using for_each_set_bit to simplify the code ARM: tegra: harmony: fix ldo7 regulator-name ARM: OMAP2+: Make omap4-keypad.h local ARM: OMAP2+: Make l4_3xxx.h local ARM: OMAP2+: Make l4_2xxx.h local ARM: OMAP2+: Make l3_3xxx.h local ARM: OMAP2+: Make l3_2xxx.h local ARM: OMAP1: Move irda.h from plat to mach ARM: OMAP2+: Make hdq1w.h local ARM: OMAP2+: Make gpmc-smsc911x.h local ARM: OMAP2+: Make gpmc-smc91x.h local ARM: OMAP1: Move flash.h from plat to mach ARM: OMAP2+: Make debug-devices.h local ARM: OMAP1: Move board-voiceblue.h from plat to mach ARM: OMAP1: Move board-sx1.h from plat to mach ARM: OMAP2+: Make omap-wakeupgen.h local ARM: OMAP2+: Make omap-secure.h local ARM: OMAP2+: Make ctrl_module_wkup_44xx.h local ...
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/Kconfig2
-rw-r--r--drivers/i2c/busses/i2c-iop3xx.c121
2 files changed, 62 insertions, 61 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 970a1612e795..42d9fdd63de0 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -551,7 +551,7 @@ config I2C_PMCMSP
config I2C_PNX
tristate "I2C bus support for Philips PNX and NXP LPC targets"
- depends on ARCH_PNX4008 || ARCH_LPC32XX
+ depends on ARCH_LPC32XX
help
This driver supports the Philips IP3204 I2C IP block master and/or
slave controller
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 93f147a96b62..2f99613fd677 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -4,13 +4,13 @@
/* Copyright (C) 2003 Peter Milne, D-TACQ Solutions Ltd
* <Peter dot Milne at D hyphen TACQ dot com>
*
- * With acknowledgements to i2c-algo-ibm_ocp.c by
+ * With acknowledgements to i2c-algo-ibm_ocp.c by
* Ian DaSilva, MontaVista Software, Inc. idasilva@mvista.com
*
* And i2c-algo-pcf.c, which was created by Simon G. Vogl and Hans Berglund:
*
* Copyright (C) 1995-1997 Simon G. Vogl, 1998-2000 Hans Berglund
- *
+ *
* And which acknowledged Kyösti Mälkki <kmalkki@cc.hut.fi>,
* Frodo Looijaard <frodol@dds.nl>, Martin Bailey<mbailey@littlefeet-inc.com>
*
@@ -39,14 +39,15 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/io.h>
+#include <linux/gpio.h>
#include "i2c-iop3xx.h"
/* global unit counter */
static int i2c_id;
-static inline unsigned char
-iic_cook_addr(struct i2c_msg *msg)
+static inline unsigned char
+iic_cook_addr(struct i2c_msg *msg)
{
unsigned char addr;
@@ -55,38 +56,38 @@ iic_cook_addr(struct i2c_msg *msg)
if (msg->flags & I2C_M_RD)
addr |= 1;
- return addr;
+ return addr;
}
-static void
+static void
iop3xx_i2c_reset(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
/* Follows devman 9.3 */
__raw_writel(IOP3XX_ICR_UNIT_RESET, iop3xx_adap->ioaddr + CR_OFFSET);
__raw_writel(IOP3XX_ISR_CLEARBITS, iop3xx_adap->ioaddr + SR_OFFSET);
__raw_writel(0, iop3xx_adap->ioaddr + CR_OFFSET);
-}
+}
-static void
+static void
iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
u32 cr = IOP3XX_ICR_GCD | IOP3XX_ICR_SCLEN | IOP3XX_ICR_UE;
- /*
+ /*
* Every time unit enable is asserted, GPOD needs to be cleared
* on IOP3XX to avoid data corruption on the bus.
*/
#if defined(CONFIG_ARCH_IOP32X) || defined(CONFIG_ARCH_IOP33X)
if (iop3xx_adap->id == 0) {
- gpio_line_set(IOP3XX_GPIO_LINE(7), GPIO_LOW);
- gpio_line_set(IOP3XX_GPIO_LINE(6), GPIO_LOW);
+ gpio_set_value(7, 0);
+ gpio_set_value(6, 0);
} else {
- gpio_line_set(IOP3XX_GPIO_LINE(5), GPIO_LOW);
- gpio_line_set(IOP3XX_GPIO_LINE(4), GPIO_LOW);
+ gpio_set_value(5, 0);
+ gpio_set_value(4, 0);
}
#endif
/* NB SR bits not same position as CR IE bits :-( */
- iop3xx_adap->SR_enabled =
+ iop3xx_adap->SR_enabled =
IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD |
IOP3XX_ISR_RXFULL | IOP3XX_ISR_TXEMPTY;
@@ -96,23 +97,23 @@ iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
}
-static void
+static void
iop3xx_i2c_transaction_cleanup(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
-
- cr &= ~(IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE |
+
+ cr &= ~(IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE |
IOP3XX_ICR_MSTOP | IOP3XX_ICR_SCLEN);
__raw_writel(cr, iop3xx_adap->ioaddr + CR_OFFSET);
}
-/*
- * NB: the handler has to clear the source of the interrupt!
+/*
+ * NB: the handler has to clear the source of the interrupt!
* Then it passes the SR flags of interest to BH via adap data
*/
-static irqreturn_t
-iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
+static irqreturn_t
+iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = dev_id;
u32 sr = __raw_readl(iop3xx_adap->ioaddr + SR_OFFSET);
@@ -126,7 +127,7 @@ iop3xx_i2c_irq_handler(int this_irq, void *dev_id)
}
/* check all error conditions, clear them , report most important */
-static int
+static int
iop3xx_i2c_error(u32 sr)
{
int rc = 0;
@@ -135,12 +136,12 @@ iop3xx_i2c_error(u32 sr)
if ( !rc ) rc = -I2C_ERR_BERR;
}
if ((sr & IOP3XX_ISR_ALD)) {
- if ( !rc ) rc = -I2C_ERR_ALD;
+ if ( !rc ) rc = -I2C_ERR_ALD;
}
- return rc;
+ return rc;
}
-static inline u32
+static inline u32
iop3xx_i2c_get_srstat(struct i2c_algo_iop3xx_data *iop3xx_adap)
{
unsigned long flags;
@@ -161,8 +162,8 @@ iop3xx_i2c_get_srstat(struct i2c_algo_iop3xx_data *iop3xx_adap)
typedef int (* compare_func)(unsigned test, unsigned mask);
/* returns 1 on correct comparison */
-static int
-iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
+static int
+iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
unsigned flags, unsigned* status,
compare_func compare)
{
@@ -192,47 +193,47 @@ iop3xx_i2c_wait_event(struct i2c_algo_iop3xx_data *iop3xx_adap,
}
/*
- * Concrete compare_funcs
+ * Concrete compare_funcs
*/
-static int
+static int
all_bits_clear(unsigned test, unsigned mask)
{
return (test & mask) == 0;
}
-static int
+static int
any_bits_set(unsigned test, unsigned mask)
{
return (test & mask) != 0;
}
-static int
+static int
iop3xx_i2c_wait_tx_done(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
- return iop3xx_i2c_wait_event(
- iop3xx_adap,
+ return iop3xx_i2c_wait_event(
+ iop3xx_adap,
IOP3XX_ISR_TXEMPTY | IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD,
status, any_bits_set);
}
-static int
+static int
iop3xx_i2c_wait_rx_done(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
- return iop3xx_i2c_wait_event(
- iop3xx_adap,
+ return iop3xx_i2c_wait_event(
+ iop3xx_adap,
IOP3XX_ISR_RXFULL | IOP3XX_ISR_ALD | IOP3XX_ISR_BERRD,
status, any_bits_set);
}
-static int
+static int
iop3xx_i2c_wait_idle(struct i2c_algo_iop3xx_data *iop3xx_adap, int *status)
{
- return iop3xx_i2c_wait_event(
+ return iop3xx_i2c_wait_event(
iop3xx_adap, IOP3XX_ISR_UNITBUSY, status, all_bits_clear);
}
-static int
-iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
+static int
+iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
struct i2c_msg* msg)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
@@ -247,7 +248,7 @@ iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
}
__raw_writel(iic_cook_addr(msg), iop3xx_adap->ioaddr + DBR_OFFSET);
-
+
cr &= ~(IOP3XX_ICR_MSTOP | IOP3XX_ICR_NACK);
cr |= IOP3XX_ICR_MSTART | IOP3XX_ICR_TBYTE;
@@ -257,8 +258,8 @@ iop3xx_i2c_send_target_addr(struct i2c_algo_iop3xx_data *iop3xx_adap,
return rc;
}
-static int
-iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
+static int
+iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
int stop)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
@@ -277,10 +278,10 @@ iop3xx_i2c_write_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char byte,
rc = iop3xx_i2c_wait_tx_done(iop3xx_adap, &status);
return rc;
-}
+}
-static int
-iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
+static int
+iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
int stop)
{
unsigned long cr = __raw_readl(iop3xx_adap->ioaddr + CR_OFFSET);
@@ -304,19 +305,19 @@ iop3xx_i2c_read_byte(struct i2c_algo_iop3xx_data *iop3xx_adap, char* byte,
return rc;
}
-static int
+static int
iop3xx_i2c_writebytes(struct i2c_adapter *i2c_adap, const char *buf, int count)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
int ii;
int rc = 0;
- for (ii = 0; rc == 0 && ii != count; ++ii)
+ for (ii = 0; rc == 0 && ii != count; ++ii)
rc = iop3xx_i2c_write_byte(iop3xx_adap, buf[ii], ii==count-1);
return rc;
}
-static int
+static int
iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
@@ -325,7 +326,7 @@ iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
for (ii = 0; rc == 0 && ii != count; ++ii)
rc = iop3xx_i2c_read_byte(iop3xx_adap, &buf[ii], ii==count-1);
-
+
return rc;
}
@@ -336,8 +337,8 @@ iop3xx_i2c_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
* Each transfer (i.e. a read or a write) is separated by a repeated start
* condition.
*/
-static int
-iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
+static int
+iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
int rc;
@@ -357,8 +358,8 @@ iop3xx_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg* pmsg)
/*
* master_xfer() - main read/write entry
*/
-static int
-iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
+static int
+iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
int num)
{
struct i2c_algo_iop3xx_data *iop3xx_adap = i2c_adap->algo_data;
@@ -375,14 +376,14 @@ iop3xx_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
}
iop3xx_i2c_transaction_cleanup(iop3xx_adap);
-
+
if(ret)
return ret;
- return im;
+ return im;
}
-static u32
+static u32
iop3xx_i2c_func(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
@@ -393,11 +394,11 @@ static const struct i2c_algorithm iop3xx_i2c_algo = {
.functionality = iop3xx_i2c_func,
};
-static int
+static int
iop3xx_i2c_remove(struct platform_device *pdev)
{
struct i2c_adapter *padapter = platform_get_drvdata(pdev);
- struct i2c_algo_iop3xx_data *adapter_data =
+ struct i2c_algo_iop3xx_data *adapter_data =
(struct i2c_algo_iop3xx_data *)padapter->algo_data;
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
unsigned long cr = __raw_readl(adapter_data->ioaddr + CR_OFFSET);
@@ -419,7 +420,7 @@ iop3xx_i2c_remove(struct platform_device *pdev)
return 0;
}
-static int
+static int
iop3xx_i2c_probe(struct platform_device *pdev)
{
struct resource *res;