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-rw-r--r--drivers/i2c/busses/Kconfig3
-rw-r--r--drivers/i2c/busses/i2c-imx.c8
-rw-r--r--drivers/i2c/busses/i2c-mxs.c28
-rw-r--r--drivers/i2c/busses/i2c-powermac.c98
-rw-r--r--drivers/i2c/busses/i2c-s6000.c2
-rw-r--r--drivers/i2c/busses/i2c-s6000.h2
6 files changed, 104 insertions, 37 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 188543d0e8b..7244c8be606 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -351,7 +351,7 @@ config I2C_DAVINCI
For details please see http://www.ti.com/davinci
config I2C_DESIGNWARE_PLATFORM
- tristate "Synopsys DesignWare Platfrom"
+ tristate "Synopsys DesignWare Platform"
depends on HAVE_CLK
help
If you say yes to this option, support will be included for the
@@ -469,6 +469,7 @@ config I2C_MV64XXX
config I2C_MXS
tristate "Freescale i.MX28 I2C interface"
depends on SOC_IMX28
+ select STMP_DEVICE
help
Say Y here if you want to use the I2C bus controller on
the Freescale i.MX28 processors.
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index cdcf313098b..8d6b504d65c 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -51,6 +51,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_i2c.h>
+#include <linux/pinctrl/consumer.h>
#include <mach/irqs.h>
#include <mach/hardware.h>
@@ -470,6 +471,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
struct imx_i2c_struct *i2c_imx;
struct resource *res;
struct imxi2c_platform_data *pdata = pdev->dev.platform_data;
+ struct pinctrl *pinctrl;
void __iomem *base;
resource_size_t res_size;
int irq, bitrate;
@@ -520,6 +522,12 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
i2c_imx->base = base;
i2c_imx->res = res;
+ pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ ret = PTR_ERR(pinctrl);
+ goto fail3;
+ }
+
/* Get I2C clock */
i2c_imx->clk = clk_get(&pdev->dev, "i2c_clk");
if (IS_ERR(i2c_imx->clk)) {
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 76b8af44f63..04eb441b6ce 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -26,8 +26,11 @@
#include <linux/platform_device.h>
#include <linux/jiffies.h>
#include <linux/io.h>
-
-#include <mach/common.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/stmp_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_i2c.h>
#define DRIVER_NAME "mxs-i2c"
@@ -111,13 +114,9 @@ struct mxs_i2c_dev {
struct i2c_adapter adapter;
};
-/*
- * TODO: check if calls to here are really needed. If not, we could get rid of
- * mxs_reset_block and the mach-dependency. Needs an I2C analyzer, probably.
- */
static void mxs_i2c_reset(struct mxs_i2c_dev *i2c)
{
- mxs_reset_block(i2c->regs);
+ stmp_reset_block(i2c->regs);
writel(MXS_I2C_IRQ_MASK << 8, i2c->regs + MXS_I2C_CTRL1_SET);
writel(MXS_I2C_QUEUECTRL_PIO_QUEUE_MODE,
i2c->regs + MXS_I2C_QUEUECTRL_SET);
@@ -325,10 +324,15 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct mxs_i2c_dev *i2c;
struct i2c_adapter *adap;
+ struct pinctrl *pinctrl;
struct resource *res;
resource_size_t res_size;
int err, irq;
+ pinctrl = devm_pinctrl_get_select_default(dev);
+ if (IS_ERR(pinctrl))
+ return PTR_ERR(pinctrl);
+
i2c = devm_kzalloc(dev, sizeof(struct mxs_i2c_dev), GFP_KERNEL);
if (!i2c)
return -ENOMEM;
@@ -365,6 +369,7 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev)
adap->algo = &mxs_i2c_algo;
adap->dev.parent = dev;
adap->nr = pdev->id;
+ adap->dev.of_node = pdev->dev.of_node;
i2c_set_adapdata(adap, i2c);
err = i2c_add_numbered_adapter(adap);
if (err) {
@@ -374,6 +379,8 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev)
return err;
}
+ of_i2c_register_devices(adap);
+
return 0;
}
@@ -393,10 +400,17 @@ static int __devexit mxs_i2c_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id mxs_i2c_dt_ids[] = {
+ { .compatible = "fsl,imx28-i2c", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_i2c_dt_ids);
+
static struct platform_driver mxs_i2c_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
+ .of_match_table = mxs_i2c_dt_ids,
},
.remove = __devexit_p(mxs_i2c_remove),
};
diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 7b397c6f607..31c47e18d83 100644
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -227,6 +227,72 @@ static int __devexit i2c_powermac_remove(struct platform_device *dev)
return 0;
}
+static void __devinit i2c_powermac_register_devices(struct i2c_adapter *adap,
+ struct pmac_i2c_bus *bus)
+{
+ struct i2c_client *newdev;
+ struct device_node *node;
+
+ for_each_child_of_node(adap->dev.of_node, node) {
+ struct i2c_board_info info = {};
+ struct dev_archdata dev_ad = {};
+ const __be32 *reg;
+ char tmp[16];
+ u32 addr;
+ int len;
+
+ /* Get address & channel */
+ reg = of_get_property(node, "reg", &len);
+ if (!reg || (len < sizeof(int))) {
+ dev_err(&adap->dev, "i2c-powermac: invalid reg on %s\n",
+ node->full_name);
+ continue;
+ }
+ addr = be32_to_cpup(reg);
+
+ /* Multibus setup, check channel */
+ if (!pmac_i2c_match_adapter(node, adap))
+ continue;
+
+ dev_dbg(&adap->dev, "i2c-powermac: register %s\n",
+ node->full_name);
+
+ /* Make up a modalias. Note: we to _NOT_ want the standard
+ * i2c drivers to match with any of our powermac stuff
+ * unless they have been specifically modified to handle
+ * it on a case by case basis. For example, for thermal
+ * control, things like lm75 etc... shall match with their
+ * corresponding windfarm drivers, _NOT_ the generic ones,
+ * so we force a prefix of AAPL, onto the modalias to
+ * make that happen
+ */
+ if (of_modalias_node(node, tmp, sizeof(tmp)) < 0) {
+ dev_err(&adap->dev, "i2c-powermac: modalias failure"
+ " on %s\n", node->full_name);
+ continue;
+ }
+ snprintf(info.type, sizeof(info.type), "MAC,%s", tmp);
+
+ /* Fill out the rest of the info structure */
+ info.addr = (addr & 0xff) >> 1;
+ info.irq = irq_of_parse_and_map(node, 0);
+ info.of_node = of_node_get(node);
+ info.archdata = &dev_ad;
+
+ newdev = i2c_new_device(adap, &info);
+ if (!newdev) {
+ dev_err(&adap->dev, "i2c-powermac: Failure to register"
+ " %s\n", node->full_name);
+ of_node_put(node);
+ /* We do not dispose of the interrupt mapping on
+ * purpose. It's not necessary (interrupt cannot be
+ * re-used) and somebody else might have grabbed it
+ * via direct DT lookup so let's not bother
+ */
+ continue;
+ }
+ }
+}
static int __devinit i2c_powermac_probe(struct platform_device *dev)
{
@@ -272,6 +338,7 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev)
adapter->algo = &i2c_powermac_algorithm;
i2c_set_adapdata(adapter, bus);
adapter->dev.parent = &dev->dev;
+ adapter->dev.of_node = dev->dev.of_node;
rc = i2c_add_adapter(adapter);
if (rc) {
printk(KERN_ERR "i2c-powermac: Adapter %s registration "
@@ -281,33 +348,10 @@ static int __devinit i2c_powermac_probe(struct platform_device *dev)
printk(KERN_INFO "PowerMac i2c bus %s registered\n", adapter->name);
- if (!strncmp(basename, "uni-n", 5)) {
- struct device_node *np;
- const u32 *prop;
- struct i2c_board_info info;
-
- /* Instantiate I2C motion sensor if present */
- np = of_find_node_by_name(NULL, "accelerometer");
- if (np && of_device_is_compatible(np, "AAPL,accelerometer_1") &&
- (prop = of_get_property(np, "reg", NULL))) {
- int i2c_bus;
- const char *tmp_bus;
-
- /* look for bus either using "reg" or by path */
- tmp_bus = strstr(np->full_name, "/i2c-bus@");
- if (tmp_bus)
- i2c_bus = *(tmp_bus + 9) - '0';
- else
- i2c_bus = ((*prop) >> 8) & 0x0f;
-
- if (pmac_i2c_get_channel(bus) == i2c_bus) {
- memset(&info, 0, sizeof(struct i2c_board_info));
- info.addr = ((*prop) & 0xff) >> 1;
- strlcpy(info.type, "ams", I2C_NAME_SIZE);
- i2c_new_device(adapter, &info);
- }
- }
- }
+ /* Cannot use of_i2c_register_devices() due to Apple device-tree
+ * funkyness
+ */
+ i2c_powermac_register_devices(adapter, bus);
return rc;
}
diff --git a/drivers/i2c/busses/i2c-s6000.c b/drivers/i2c/busses/i2c-s6000.c
index c64ba736f48..b76a29d1f8e 100644
--- a/drivers/i2c/busses/i2c-s6000.c
+++ b/drivers/i2c/busses/i2c-s6000.c
@@ -3,7 +3,7 @@
*
* Description: Driver for S6000 Family I2C Interface
* Copyright (c) 2008 emlix GmbH
- * Author: Oskar Schirmer <os@emlix.com>
+ * Author: Oskar Schirmer <oskar@scara.com>
*
* Partially based on i2c-bfin-twi.c driver by <sonic.zhang@analog.com>
* Copyright (c) 2005-2007 Analog Devices, Inc.
diff --git a/drivers/i2c/busses/i2c-s6000.h b/drivers/i2c/busses/i2c-s6000.h
index ff23b81ded4..4936f9f2256 100644
--- a/drivers/i2c/busses/i2c-s6000.h
+++ b/drivers/i2c/busses/i2c-s6000.h
@@ -6,7 +6,7 @@
* for more details.
*
* Copyright (C) 2008 Emlix GmbH <info@emlix.com>
- * Author: Oskar Schirmer <os@emlix.com>
+ * Author: Oskar Schirmer <oskar@scara.com>
*/
#ifndef __DRIVERS_I2C_BUSSES_I2C_S6000_H
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-22 02:51:23 +0000