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-rw-r--r--drivers/i2c/busses/Kconfig2
-rw-r--r--drivers/i2c/busses/i2c-eg20t.c4
-rw-r--r--drivers/i2c/busses/i2c-imx.c8
-rw-r--r--drivers/i2c/busses/i2c-mxs.c14
-rw-r--r--drivers/i2c/busses/i2c-pnx.c160
-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
-rw-r--r--drivers/i2c/busses/i2c-tegra.c8
9 files changed, 220 insertions, 78 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index d2c5095deea..94468a64ce3 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
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index f086131cb1c..c811289b61e 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -324,7 +324,7 @@ static s32 pch_i2c_wait_for_xfer_complete(struct i2c_algo_pch_data *adap)
{
long ret;
ret = wait_event_timeout(pch_event,
- (adap->pch_event_flag != 0), msecs_to_jiffies(50));
+ (adap->pch_event_flag != 0), msecs_to_jiffies(1000));
if (ret == 0) {
pch_err(adap, "timeout: %x\n", adap->pch_event_flag);
@@ -1063,6 +1063,6 @@ module_exit(pch_pci_exit);
MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semico ML7213/ML7223/ML7831 IOH I2C");
MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Tomoya MORINAGA. <tomoya-linux@dsn.lapis-semi.com>");
+MODULE_AUTHOR("Tomoya MORINAGA. <tomoya.rohm@gmail.com>");
module_param(pch_i2c_speed, int, (S_IRUSR | S_IWUSR));
module_param(pch_clk, int, (S_IRUSR | S_IWUSR));
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index dfb84b7ee55..56bce9a8bcb 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 3d471d56bf1..7fa73eed84a 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -26,6 +26,7 @@
#include <linux/platform_device.h>
#include <linux/jiffies.h>
#include <linux/io.h>
+#include <linux/pinctrl/consumer.h>
#include <mach/common.h>
@@ -227,6 +228,7 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg,
return -EINVAL;
init_completion(&i2c->cmd_complete);
+ i2c->cmd_err = 0;
flags = stop ? MXS_I2C_CTRL0_POST_SEND_STOP : 0;
@@ -252,6 +254,9 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg,
if (i2c->cmd_err == -ENXIO)
mxs_i2c_reset(i2c);
+ else
+ writel(MXS_I2C_QUEUECTRL_QUEUE_RUN,
+ i2c->regs + MXS_I2C_QUEUECTRL_CLR);
dev_dbg(i2c->dev, "Done with err=%d\n", i2c->cmd_err);
@@ -299,8 +304,6 @@ static irqreturn_t mxs_i2c_isr(int this_irq, void *dev_id)
MXS_I2C_CTRL1_SLAVE_STOP_IRQ | MXS_I2C_CTRL1_SLAVE_IRQ))
/* MXS_I2C_CTRL1_OVERSIZE_XFER_TERM_IRQ is only for slaves */
i2c->cmd_err = -EIO;
- else
- i2c->cmd_err = 0;
is_last_cmd = (readl(i2c->regs + MXS_I2C_QUEUESTAT) &
MXS_I2C_QUEUESTAT_WRITE_QUEUE_CNT_MASK) == 0;
@@ -323,10 +326,15 @@ 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;
@@ -384,8 +392,6 @@ static int __devexit mxs_i2c_remove(struct platform_device *pdev)
if (ret)
return -EBUSY;
- writel(MXS_I2C_QUEUECTRL_QUEUE_RUN,
- i2c->regs + MXS_I2C_QUEUECTRL_CLR);
writel(MXS_I2C_CTRL0_SFTRST, i2c->regs + MXS_I2C_CTRL0_SET);
platform_set_drvdata(pdev, NULL);
diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c
index 04be9f82e14..99389d2eae5 100644
--- a/drivers/i2c/busses/i2c-pnx.c
+++ b/drivers/i2c/busses/i2c-pnx.c
@@ -23,16 +23,61 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/slab.h>
+#include <linux/of_i2c.h>
+
+#define I2C_PNX_TIMEOUT_DEFAULT 10 /* msec */
+#define I2C_PNX_SPEED_KHZ_DEFAULT 100
+#define I2C_PNX_REGION_SIZE 0x100
+
+enum {
+ mstatus_tdi = 0x00000001,
+ mstatus_afi = 0x00000002,
+ mstatus_nai = 0x00000004,
+ mstatus_drmi = 0x00000008,
+ mstatus_active = 0x00000020,
+ mstatus_scl = 0x00000040,
+ mstatus_sda = 0x00000080,
+ mstatus_rff = 0x00000100,
+ mstatus_rfe = 0x00000200,
+ mstatus_tff = 0x00000400,
+ mstatus_tfe = 0x00000800,
+};
-#include <mach/hardware.h>
-#include <mach/i2c.h>
+enum {
+ mcntrl_tdie = 0x00000001,
+ mcntrl_afie = 0x00000002,
+ mcntrl_naie = 0x00000004,
+ mcntrl_drmie = 0x00000008,
+ mcntrl_daie = 0x00000020,
+ mcntrl_rffie = 0x00000040,
+ mcntrl_tffie = 0x00000080,
+ mcntrl_reset = 0x00000100,
+ mcntrl_cdbmode = 0x00000400,
+};
-#define I2C_PNX_TIMEOUT 10 /* msec */
-#define I2C_PNX_SPEED_KHZ 100
-#define I2C_PNX_REGION_SIZE 0x100
+enum {
+ rw_bit = 1 << 0,
+ start_bit = 1 << 8,
+ stop_bit = 1 << 9,
+};
-static inline int wait_timeout(long timeout, struct i2c_pnx_algo_data *data)
+#define I2C_REG_RX(a) ((a)->ioaddr) /* Rx FIFO reg (RO) */
+#define I2C_REG_TX(a) ((a)->ioaddr) /* Tx FIFO reg (WO) */
+#define I2C_REG_STS(a) ((a)->ioaddr + 0x04) /* Status reg (RO) */
+#define I2C_REG_CTL(a) ((a)->ioaddr + 0x08) /* Ctl reg */
+#define I2C_REG_CKL(a) ((a)->ioaddr + 0x0c) /* Clock divider low */
+#define I2C_REG_CKH(a) ((a)->ioaddr + 0x10) /* Clock divider high */
+#define I2C_REG_ADR(a) ((a)->ioaddr + 0x14) /* I2C address */
+#define I2C_REG_RFL(a) ((a)->ioaddr + 0x18) /* Rx FIFO level (RO) */
+#define I2C_REG_TFL(a) ((a)->ioaddr + 0x1c) /* Tx FIFO level (RO) */
+#define I2C_REG_RXB(a) ((a)->ioaddr + 0x20) /* Num of bytes Rx-ed (RO) */
+#define I2C_REG_TXB(a) ((a)->ioaddr + 0x24) /* Num of bytes Tx-ed (RO) */
+#define I2C_REG_TXS(a) ((a)->ioaddr + 0x28) /* Tx slave FIFO (RO) */
+#define I2C_REG_STFL(a) ((a)->ioaddr + 0x2c) /* Tx slave FIFO level (RO) */
+
+static inline int wait_timeout(struct i2c_pnx_algo_data *data)
{
+ long timeout = data->timeout;
while (timeout > 0 &&
(ioread32(I2C_REG_STS(data)) & mstatus_active)) {
mdelay(1);
@@ -41,8 +86,9 @@ static inline int wait_timeout(long timeout, struct i2c_pnx_algo_data *data)
return (timeout <= 0);
}
-static inline int wait_reset(long timeout, struct i2c_pnx_algo_data *data)
+static inline int wait_reset(struct i2c_pnx_algo_data *data)
{
+ long timeout = data->timeout;
while (timeout > 0 &&
(ioread32(I2C_REG_CTL(data)) & mcntrl_reset)) {
mdelay(1);
@@ -54,7 +100,7 @@ static inline int wait_reset(long timeout, struct i2c_pnx_algo_data *data)
static inline void i2c_pnx_arm_timer(struct i2c_pnx_algo_data *alg_data)
{
struct timer_list *timer = &alg_data->mif.timer;
- unsigned long expires = msecs_to_jiffies(I2C_PNX_TIMEOUT);
+ unsigned long expires = msecs_to_jiffies(alg_data->timeout);
if (expires <= 1)
expires = 2;
@@ -92,7 +138,7 @@ static int i2c_pnx_start(unsigned char slave_addr,
}
/* First, make sure bus is idle */
- if (wait_timeout(I2C_PNX_TIMEOUT, alg_data)) {
+ if (wait_timeout(alg_data)) {
/* Somebody else is monopolizing the bus */
dev_err(&alg_data->adapter.dev,
"%s: Bus busy. Slave addr = %02x, cntrl = %x, stat = %x\n",
@@ -185,7 +231,7 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data)
if (alg_data->mif.len == 0) {
if (alg_data->last) {
/* Wait until the STOP is seen. */
- if (wait_timeout(I2C_PNX_TIMEOUT, alg_data))
+ if (wait_timeout(alg_data))
dev_err(&alg_data->adapter.dev,
"The bus is still active after timeout\n");
}
@@ -283,7 +329,7 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data)
if (alg_data->mif.len == 0) {
if (alg_data->last)
/* Wait until the STOP is seen. */
- if (wait_timeout(I2C_PNX_TIMEOUT, alg_data))
+ if (wait_timeout(alg_data))
dev_err(&alg_data->adapter.dev,
"The bus is still active after timeout\n");
@@ -399,7 +445,7 @@ static void i2c_pnx_timeout(unsigned long data)
ctl |= mcntrl_reset;
iowrite32(ctl, I2C_REG_CTL(alg_data));
- wait_reset(I2C_PNX_TIMEOUT, alg_data);
+ wait_reset(alg_data);
alg_data->mif.ret = -EIO;
complete(&alg_data->mif.complete);
}
@@ -414,18 +460,18 @@ static inline void bus_reset_if_active(struct i2c_pnx_algo_data *alg_data)
alg_data->adapter.name);
iowrite32(ioread32(I2C_REG_CTL(alg_data)) | mcntrl_reset,
I2C_REG_CTL(alg_data));
- wait_reset(I2C_PNX_TIMEOUT, alg_data);
+ wait_reset(alg_data);
} else if (!(stat & mstatus_rfe) || !(stat & mstatus_tfe)) {
/* If there is data in the fifo's after transfer,
* flush fifo's by reset.
*/
iowrite32(ioread32(I2C_REG_CTL(alg_data)) | mcntrl_reset,
I2C_REG_CTL(alg_data));
- wait_reset(I2C_PNX_TIMEOUT, alg_data);
+ wait_reset(alg_data);
} else if (stat & mstatus_nai) {
iowrite32(ioread32(I2C_REG_CTL(alg_data)) | mcntrl_reset,
I2C_REG_CTL(alg_data));
- wait_reset(I2C_PNX_TIMEOUT, alg_data);
+ wait_reset(alg_data);
}
}
@@ -546,8 +592,7 @@ static int i2c_pnx_controller_suspend(struct platform_device *pdev,
{
struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev);
- /* FIXME: shouldn't this be clk_disable? */
- clk_enable(alg_data->clk);
+ clk_disable(alg_data->clk);
return 0;
}
@@ -569,14 +614,8 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
int ret = 0;
struct i2c_pnx_algo_data *alg_data;
unsigned long freq;
- struct i2c_pnx_data *i2c_pnx = pdev->dev.platform_data;
-
- if (!i2c_pnx || !i2c_pnx->name) {
- dev_err(&pdev->dev, "%s: no platform data supplied\n",
- __func__);
- ret = -EINVAL;
- goto out;
- }
+ struct resource *res;
+ u32 speed = I2C_PNX_SPEED_KHZ_DEFAULT * 1000;
alg_data = kzalloc(sizeof(*alg_data), GFP_KERNEL);
if (!alg_data) {
@@ -586,14 +625,27 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, alg_data);
- strlcpy(alg_data->adapter.name, i2c_pnx->name,
- sizeof(alg_data->adapter.name));
alg_data->adapter.dev.parent = &pdev->dev;
alg_data->adapter.algo = &pnx_algorithm;
alg_data->adapter.algo_data = alg_data;
alg_data->adapter.nr = pdev->id;
- alg_data->i2c_pnx = i2c_pnx;
+ alg_data->timeout = I2C_PNX_TIMEOUT_DEFAULT;
+#ifdef CONFIG_OF
+ alg_data->adapter.dev.of_node = of_node_get(pdev->dev.of_node);
+ if (pdev->dev.of_node) {
+ of_property_read_u32(pdev->dev.of_node, "clock-frequency",
+ &speed);
+ /*
+ * At this point, it is planned to add an OF timeout property.
+ * As soon as there is a consensus about how to call and handle
+ * this, sth. like the following can be put here:
+ *
+ * of_property_read_u32(pdev->dev.of_node, "timeout",
+ * &alg_data->timeout);
+ */
+ }
+#endif
alg_data->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(alg_data->clk)) {
ret = PTR_ERR(alg_data->clk);
@@ -604,17 +656,27 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
alg_data->mif.timer.function = i2c_pnx_timeout;
alg_data->mif.timer.data = (unsigned long)alg_data;
+ snprintf(alg_data->adapter.name, sizeof(alg_data->adapter.name),
+ "%s", pdev->name);
+
/* Register I/O resource */
- if (!request_mem_region(i2c_pnx->base, I2C_PNX_REGION_SIZE,
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Unable to get mem resource.\n");
+ ret = -EBUSY;
+ goto out_clkget;
+ }
+ if (!request_mem_region(res->start, I2C_PNX_REGION_SIZE,
pdev->name)) {
dev_err(&pdev->dev,
"I/O region 0x%08x for I2C already in use.\n",
- i2c_pnx->base);
- ret = -ENODEV;
+ res->start);
+ ret = -ENOMEM;
goto out_clkget;
}
- alg_data->ioaddr = ioremap(i2c_pnx->base, I2C_PNX_REGION_SIZE);
+ alg_data->base = res->start;
+ alg_data->ioaddr = ioremap(res->start, I2C_PNX_REGION_SIZE);
if (!alg_data->ioaddr) {
dev_err(&pdev->dev, "Couldn't ioremap I2C I/O region\n");
ret = -ENOMEM;
@@ -638,20 +700,25 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
* the deglitching filter length.
*/
- tmp = ((freq / 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2;
+ tmp = (freq / speed) / 2 - 2;
if (tmp > 0x3FF)
tmp = 0x3FF;
iowrite32(tmp, I2C_REG_CKH(alg_data));
iowrite32(tmp, I2C_REG_CKL(alg_data));
iowrite32(mcntrl_reset, I2C_REG_CTL(alg_data));
- if (wait_reset(I2C_PNX_TIMEOUT, alg_data)) {
+ if (wait_reset(alg_data)) {
ret = -ENODEV;
goto out_clock;
}
init_completion(&alg_data->mif.complete);
- ret = request_irq(i2c_pnx->irq, i2c_pnx_interrupt,
+ alg_data->irq = platform_get_irq(pdev, 0);
+ if (alg_data->irq < 0) {
+ dev_err(&pdev->dev, "Failed to get IRQ from platform resource\n");
+ goto out_irq;
+ }
+ ret = request_irq(alg_data->irq, i2c_pnx_interrupt,
0, pdev->name, alg_data);
if (ret)
goto out_clock;
@@ -663,39 +730,39 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
goto out_irq;
}
+ of_i2c_register_devices(&alg_data->adapter);
+
dev_dbg(&pdev->dev, "%s: Master at %#8x, irq %d.\n",
- alg_data->adapter.name, i2c_pnx->base, i2c_pnx->irq);
+ alg_data->adapter.name, res->start, alg_data->irq);
return 0;
out_irq:
- free_irq(i2c_pnx->irq, alg_data);
+ free_irq(alg_data->irq, alg_data);
out_clock:
clk_disable(alg_data->clk);
out_unmap:
iounmap(alg_data->ioaddr);
out_release:
- release_mem_region(i2c_pnx->base, I2C_PNX_REGION_SIZE);
+ release_mem_region(res->start, I2C_PNX_REGION_SIZE);
out_clkget:
clk_put(alg_data->clk);
out_drvdata:
kfree(alg_data);
err_kzalloc:
platform_set_drvdata(pdev, NULL);
-out:
return ret;
}
static int __devexit i2c_pnx_remove(struct platform_device *pdev)
{
struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev);
- struct i2c_pnx_data *i2c_pnx = alg_data->i2c_pnx;
- free_irq(i2c_pnx->irq, alg_data);
+ free_irq(alg_data->irq, alg_data);
i2c_del_adapter(&alg_data->adapter);
clk_disable(alg_data->clk);
iounmap(alg_data->ioaddr);
- release_mem_region(i2c_pnx->base, I2C_PNX_REGION_SIZE);
+ release_mem_region(alg_data->base, I2C_PNX_REGION_SIZE);
clk_put(alg_data->clk);
kfree(alg_data);
platform_set_drvdata(pdev, NULL);
@@ -703,10 +770,19 @@ static int __devexit i2c_pnx_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id i2c_pnx_of_match[] = {
+ { .compatible = "nxp,pnx-i2c" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, i2c_pnx_of_match);
+#endif
+
static struct platform_driver i2c_pnx_driver = {
.driver = {
.name = "pnx-i2c",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(i2c_pnx_of_match),
},
.probe = i2c_pnx_probe,
.remove = __devexit_p(i2c_pnx_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
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index e978635e60f..55e5ea62cce 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -516,6 +516,14 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
if (likely(i2c_dev->msg_err == I2C_ERR_NONE))
return 0;
+ /*
+ * NACK interrupt is generated before the I2C controller generates the
+ * STOP condition on the bus. So wait for 2 clock periods before resetting
+ * the controller so that STOP condition has been delivered properly.
+ */
+ if (i2c_dev->msg_err == I2C_ERR_NO_ACK)
+ udelay(DIV_ROUND_UP(2 * 1000000, i2c_dev->bus_clk_rate));
+
tegra_i2c_init(i2c_dev);
if (i2c_dev->msg_err == I2C_ERR_NO_ACK) {
if (msg->flags & I2C_M_IGNORE_NAK)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 00:34:55 +0000