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-rw-r--r--drivers/i2c/busses/Kconfig1
-rw-r--r--drivers/i2c/busses/i2c-omap.c30
-rw-r--r--drivers/i2c/busses/i2c-qup.c4
-rw-r--r--drivers/i2c/busses/i2c-stm32.c8
-rw-r--r--drivers/i2c/busses/i2c-stm32f7.c24
-rw-r--r--drivers/i2c/busses/i2c-tegra.c24
-rw-r--r--drivers/i2c/busses/i2c-virtio.c15
7 files changed, 54 insertions, 52 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 2254abda5c46..0e679cc50148 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -937,6 +937,7 @@ config I2C_OMAP
tristate "OMAP I2C adapter"
depends on ARCH_OMAP || ARCH_K3 || COMPILE_TEST
default MACH_OMAP_OSK
+ select MULTIPLEXER
help
If you say yes to this option, support will be included for the
I2C interface on the Texas Instruments OMAP1/2 family of processors.
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 8c9cf08ad45e..0bdee43dc134 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/mux/consumer.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/platform_data/i2c-omap.h>
@@ -211,6 +212,7 @@ struct omap_i2c_dev {
u16 syscstate;
u16 westate;
u16 errata;
+ struct mux_state *mux_state;
};
static const u8 reg_map_ip_v1[] = {
@@ -1452,8 +1454,27 @@ omap_i2c_probe(struct platform_device *pdev)
(1000 * omap->speed / 8);
}
+ if (of_property_present(node, "mux-states")) {
+ struct mux_state *mux_state;
+
+ mux_state = devm_mux_state_get(&pdev->dev, NULL);
+ if (IS_ERR(mux_state)) {
+ r = PTR_ERR(mux_state);
+ dev_dbg(&pdev->dev, "failed to get I2C mux: %d\n", r);
+ goto err_put_pm;
+ }
+ omap->mux_state = mux_state;
+ r = mux_state_select(omap->mux_state);
+ if (r) {
+ dev_err(&pdev->dev, "failed to select I2C mux: %d\n", r);
+ goto err_put_pm;
+ }
+ }
+
/* reset ASAP, clearing any IRQs */
- omap_i2c_init(omap);
+ r = omap_i2c_init(omap);
+ if (r)
+ goto err_mux_state_deselect;
if (omap->rev < OMAP_I2C_OMAP1_REV_2)
r = devm_request_irq(&pdev->dev, omap->irq, omap_i2c_omap1_isr,
@@ -1496,6 +1517,10 @@ omap_i2c_probe(struct platform_device *pdev)
err_unuse_clocks:
omap_i2c_write_reg(omap, OMAP_I2C_CON_REG, 0);
+err_mux_state_deselect:
+ if (omap->mux_state)
+ mux_state_deselect(omap->mux_state);
+err_put_pm:
pm_runtime_dont_use_autosuspend(omap->dev);
pm_runtime_put_sync(omap->dev);
err_disable_pm:
@@ -1511,6 +1536,9 @@ static void omap_i2c_remove(struct platform_device *pdev)
i2c_del_adapter(&omap->adapter);
+ if (omap->mux_state)
+ mux_state_deselect(omap->mux_state);
+
ret = pm_runtime_get_sync(&pdev->dev);
if (ret < 0)
dev_err(omap->dev, "Failed to resume hardware, skip disable\n");
diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c
index eb97abcb4cd3..592b754f48e9 100644
--- a/drivers/i2c/busses/i2c-qup.c
+++ b/drivers/i2c/busses/i2c-qup.c
@@ -452,8 +452,10 @@ static int qup_i2c_bus_active(struct qup_i2c_dev *qup, int len)
if (!(status & I2C_STATUS_BUS_ACTIVE))
break;
- if (time_after(jiffies, timeout))
+ if (time_after(jiffies, timeout)) {
ret = -ETIMEDOUT;
+ break;
+ }
usleep_range(len, len * 2);
}
diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c
index 157c64e27d0b..f84ec056e36d 100644
--- a/drivers/i2c/busses/i2c-stm32.c
+++ b/drivers/i2c/busses/i2c-stm32.c
@@ -102,7 +102,6 @@ int stm32_i2c_prep_dma_xfer(struct device *dev, struct stm32_i2c_dma *dma,
void *dma_async_param)
{
struct dma_async_tx_descriptor *txdesc;
- struct device *chan_dev;
int ret;
if (rd_wr) {
@@ -116,11 +115,10 @@ int stm32_i2c_prep_dma_xfer(struct device *dev, struct stm32_i2c_dma *dma,
}
dma->dma_len = len;
- chan_dev = dma->chan_using->device->dev;
- dma->dma_buf = dma_map_single(chan_dev, buf, dma->dma_len,
+ dma->dma_buf = dma_map_single(dev, buf, dma->dma_len,
dma->dma_data_dir);
- if (dma_mapping_error(chan_dev, dma->dma_buf)) {
+ if (dma_mapping_error(dev, dma->dma_buf)) {
dev_err(dev, "DMA mapping failed\n");
return -EINVAL;
}
@@ -150,7 +148,7 @@ int stm32_i2c_prep_dma_xfer(struct device *dev, struct stm32_i2c_dma *dma,
return 0;
err:
- dma_unmap_single(chan_dev, dma->dma_buf, dma->dma_len,
+ dma_unmap_single(dev, dma->dma_buf, dma->dma_len,
dma->dma_data_dir);
return ret;
}
diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
index 0174ead99de6..a4587f281216 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -739,12 +739,13 @@ static void stm32f7_i2c_disable_dma_req(struct stm32f7_i2c_dev *i2c_dev)
static void stm32f7_i2c_dma_callback(void *arg)
{
- struct stm32f7_i2c_dev *i2c_dev = (struct stm32f7_i2c_dev *)arg;
+ struct stm32f7_i2c_dev *i2c_dev = arg;
struct stm32_i2c_dma *dma = i2c_dev->dma;
- struct device *dev = dma->chan_using->device->dev;
stm32f7_i2c_disable_dma_req(i2c_dev);
- dma_unmap_single(dev, dma->dma_buf, dma->dma_len, dma->dma_data_dir);
+ dmaengine_terminate_async(dma->chan_using);
+ dma_unmap_single(i2c_dev->dev, dma->dma_buf, dma->dma_len,
+ dma->dma_data_dir);
complete(&dma->dma_complete);
}
@@ -1510,7 +1511,6 @@ static irqreturn_t stm32f7_i2c_handle_isr_errs(struct stm32f7_i2c_dev *i2c_dev,
u16 addr = f7_msg->addr;
void __iomem *base = i2c_dev->base;
struct device *dev = i2c_dev->dev;
- struct stm32_i2c_dma *dma = i2c_dev->dma;
/* Bus error */
if (status & STM32F7_I2C_ISR_BERR) {
@@ -1551,10 +1551,8 @@ static irqreturn_t stm32f7_i2c_handle_isr_errs(struct stm32f7_i2c_dev *i2c_dev,
}
/* Disable dma */
- if (i2c_dev->use_dma) {
- stm32f7_i2c_disable_dma_req(i2c_dev);
- dmaengine_terminate_async(dma->chan_using);
- }
+ if (i2c_dev->use_dma)
+ stm32f7_i2c_dma_callback(i2c_dev);
i2c_dev->master_mode = false;
complete(&i2c_dev->complete);
@@ -1600,7 +1598,6 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data)
{
struct stm32f7_i2c_dev *i2c_dev = data;
struct stm32f7_i2c_msg *f7_msg = &i2c_dev->f7_msg;
- struct stm32_i2c_dma *dma = i2c_dev->dma;
void __iomem *base = i2c_dev->base;
u32 status, mask;
int ret;
@@ -1619,10 +1616,8 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data)
dev_dbg(i2c_dev->dev, "<%s>: Receive NACK (addr %x)\n",
__func__, f7_msg->addr);
writel_relaxed(STM32F7_I2C_ICR_NACKCF, base + STM32F7_I2C_ICR);
- if (i2c_dev->use_dma) {
- stm32f7_i2c_disable_dma_req(i2c_dev);
- dmaengine_terminate_async(dma->chan_using);
- }
+ if (i2c_dev->use_dma)
+ stm32f7_i2c_dma_callback(i2c_dev);
f7_msg->result = -ENXIO;
}
@@ -1640,8 +1635,7 @@ static irqreturn_t stm32f7_i2c_isr_event_thread(int irq, void *data)
ret = wait_for_completion_timeout(&i2c_dev->dma->dma_complete, HZ);
if (!ret) {
dev_dbg(i2c_dev->dev, "<%s>: Timed out\n", __func__);
- stm32f7_i2c_disable_dma_req(i2c_dev);
- dmaengine_terminate_async(dma->chan_using);
+ stm32f7_i2c_dma_callback(i2c_dev);
f7_msg->result = -ETIMEDOUT;
}
}
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 89ce8a62b37c..fbab82d457fb 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -607,7 +607,6 @@ static int tegra_i2c_wait_for_config_load(struct tegra_i2c_dev *i2c_dev)
static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
{
u32 val, clk_divisor, clk_multiplier, tsu_thd, tlow, thigh, non_hs_mode;
- acpi_handle handle = ACPI_HANDLE(i2c_dev->dev);
struct i2c_timings *t = &i2c_dev->timings;
int err;
@@ -619,11 +618,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
* emit a noisy warning on error, which won't stay unnoticed and
* won't hose machine entirely.
*/
- if (handle)
- err = acpi_evaluate_object(handle, "_RST", NULL, NULL);
- else
- err = reset_control_reset(i2c_dev->rst);
-
+ err = device_reset(i2c_dev->dev);
WARN_ON_ONCE(err);
if (IS_DVC(i2c_dev))
@@ -1666,19 +1661,6 @@ static void tegra_i2c_parse_dt(struct tegra_i2c_dev *i2c_dev)
i2c_dev->is_vi = true;
}
-static int tegra_i2c_init_reset(struct tegra_i2c_dev *i2c_dev)
-{
- if (ACPI_HANDLE(i2c_dev->dev))
- return 0;
-
- i2c_dev->rst = devm_reset_control_get_exclusive(i2c_dev->dev, "i2c");
- if (IS_ERR(i2c_dev->rst))
- return dev_err_probe(i2c_dev->dev, PTR_ERR(i2c_dev->rst),
- "failed to get reset control\n");
-
- return 0;
-}
-
static int tegra_i2c_init_clocks(struct tegra_i2c_dev *i2c_dev)
{
int err;
@@ -1788,10 +1770,6 @@ static int tegra_i2c_probe(struct platform_device *pdev)
tegra_i2c_parse_dt(i2c_dev);
- err = tegra_i2c_init_reset(i2c_dev);
- if (err)
- return err;
-
err = tegra_i2c_init_clocks(i2c_dev);
if (err)
return err;
diff --git a/drivers/i2c/busses/i2c-virtio.c b/drivers/i2c/busses/i2c-virtio.c
index 2a351f961b89..c8c40ff9765d 100644
--- a/drivers/i2c/busses/i2c-virtio.c
+++ b/drivers/i2c/busses/i2c-virtio.c
@@ -116,15 +116,16 @@ static int virtio_i2c_complete_reqs(struct virtqueue *vq,
for (i = 0; i < num; i++) {
struct virtio_i2c_req *req = &reqs[i];
- wait_for_completion(&req->completion);
-
- if (!failed && req->in_hdr.status != VIRTIO_I2C_MSG_OK)
- failed = true;
+ if (!failed) {
+ if (wait_for_completion_interruptible(&req->completion))
+ failed = true;
+ else if (req->in_hdr.status != VIRTIO_I2C_MSG_OK)
+ failed = true;
+ else
+ j++;
+ }
i2c_put_dma_safe_msg_buf(reqs[i].buf, &msgs[i], !failed);
-
- if (!failed)
- j++;
}
return j;
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-08 10:18:42 +0300