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Merge tag 'i2c-for-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Browse Source 
Pull i2c fixes from Wolfram Sang:
 "Biggest news is that Andi Shyti steps in for maintaining the
  controller drivers. Thank you very much!

  Other than that, one new driver maintainer and the rest is usual
  driver bugfixes. at24 has a Kconfig dependecy fix"

* tag 'i2c-for-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  MAINTAINERS: Add entries for Renesas RZ/V2M I2C driver
  eeprom: at24: also select REGMAP
  i2c: sprd: Delete i2c adapter in .remove's error path
  i2c: mv64xxx: Fix reading invalid status value in atomic mode
  i2c: designware: fix idx_write_cnt in read loop
  i2c: mchp-pci1xxxx: Avoid cast to incompatible function type
  i2c: img-scb: Fix spelling mistake "innacurate" -> "inaccurate"
  MAINTAINERS: Add myself as I2C host drivers maintainer
This commit is contained in:
Linus Torvalds
2023-06-10 13:36:07 -07:00
parent 6be5e47b69 33f36147be
commit 022ce8862d
8 changed files with 37 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
MAINTAINERS
View File

@@ -9696,8 +9696,9 @@ F: include/uapi/linux/i2c-*.h
F: include/uapi/linux/i2c.h
I2C SUBSYSTEM HOST DRIVERS
M: Andi Shyti <andi.shyti@kernel.org>
L: linux-i2c@vger.kernel.org
S: Odd Fixes
S: Maintained
W: https://i2c.wiki.kernel.org/
Q: https://patchwork.ozlabs.org/project/linux-i2c/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git
@@ -18047,6 +18048,14 @@ S: Maintained
F: Documentation/devicetree/bindings/usb/renesas,rzn1-usbf.yaml
F: drivers/usb/gadget/udc/renesas_usbf.c
RENESAS RZ/V2M I2C DRIVER
M: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
L: linux-i2c@vger.kernel.org
L: linux-renesas-soc@vger.kernel.org
S: Supported
F: Documentation/devicetree/bindings/i2c/renesas,rzv2m.yaml
F: drivers/i2c/busses/i2c-rzv2m.c
RENESAS USB PHY DRIVER
M: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
L: linux-renesas-soc@vger.kernel.org

1
drivers/i2c/busses/i2c-designware-core.h
View File

@@ -40,6 +40,7 @@
#define DW_IC_CON_BUS_CLEAR_CTRL BIT(11)
#define DW_IC_DATA_CMD_DAT GENMASK(7, 0)
#define DW_IC_DATA_CMD_FIRST_DATA_BYTE BIT(11)
/*
* Registers offset

4
drivers/i2c/busses/i2c-designware-slave.c
View File

@@ -176,6 +176,10 @@ static irqreturn_t i2c_dw_isr_slave(int this_irq, void *dev_id)
do {
regmap_read(dev->map, DW_IC_DATA_CMD, &tmp);
if (tmp & DW_IC_DATA_CMD_FIRST_DATA_BYTE)
i2c_slave_event(dev->slave,
I2C_SLAVE_WRITE_REQUESTED,
&val);
val = tmp;
i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_RECEIVED,
&val);

2
drivers/i2c/busses/i2c-img-scb.c
View File

@@ -257,7 +257,7 @@
#define IMG_I2C_TIMEOUT (msecs_to_jiffies(1000))
/*
* Worst incs are 1 (innacurate) and 16*256 (irregular).
* Worst incs are 1 (inaccurate) and 16*256 (irregular).
* So a sensible inc is the logarithmic mean: 64 (2^6), which is
* in the middle of the valid range (0-127).
*/

6
drivers/i2c/busses/i2c-mchp-pci1xxxx.c
View File

@@ -1118,8 +1118,10 @@ static int pci1xxxx_i2c_resume(struct device *dev)
static DEFINE_SIMPLE_DEV_PM_OPS(pci1xxxx_i2c_pm_ops, pci1xxxx_i2c_suspend,
pci1xxxx_i2c_resume);
static void pci1xxxx_i2c_shutdown(struct pci1xxxx_i2c *i2c)
static void pci1xxxx_i2c_shutdown(void *data)
{
struct pci1xxxx_i2c *i2c = data;
pci1xxxx_i2c_config_padctrl(i2c, false);
pci1xxxx_i2c_configure_core_reg(i2c, false);
}
@@ -1156,7 +1158,7 @@ static int pci1xxxx_i2c_probe_pci(struct pci_dev *pdev,
init_completion(&i2c->i2c_xfer_done);
pci1xxxx_i2c_init(i2c);
ret = devm_add_action(dev, (void (*)(void *))pci1xxxx_i2c_shutdown, i2c);
ret = devm_add_action(dev, pci1xxxx_i2c_shutdown, i2c);
if (ret)
return ret;

11
drivers/i2c/busses/i2c-mv64xxx.c
View File

@@ -520,6 +520,17 @@ mv64xxx_i2c_intr(int irq, void *dev_id)
while (readl(drv_data->reg_base + drv_data->reg_offsets.control) &
MV64XXX_I2C_REG_CONTROL_IFLG) {
/*
* It seems that sometime the controller updates the status
* register only after it asserts IFLG in control register.
* This may result in weird bugs when in atomic mode. A delay
* of 100 ns before reading the status register solves this
* issue. This bug does not seem to appear when using
* interrupts.
*/
if (drv_data->atomic)
ndelay(100);
status = readl(drv_data->reg_base + drv_data->reg_offsets.status);
mv64xxx_i2c_fsm(drv_data, status);
mv64xxx_i2c_do_action(drv_data);

8
drivers/i2c/busses/i2c-sprd.c
View File

@@ -576,12 +576,14 @@ static int sprd_i2c_remove(struct platform_device *pdev)
struct sprd_i2c *i2c_dev = platform_get_drvdata(pdev);
int ret;
ret = pm_runtime_resume_and_get(i2c_dev->dev);
ret = pm_runtime_get_sync(i2c_dev->dev);
if (ret < 0)
return ret;
dev_err(&pdev->dev, "Failed to resume device (%pe)\n", ERR_PTR(ret));
i2c_del_adapter(&i2c_dev->adap);
clk_disable_unprepare(i2c_dev->clk);
if (ret >= 0)
clk_disable_unprepare(i2c_dev->clk);
pm_runtime_put_noidle(i2c_dev->dev);
pm_runtime_disable(i2c_dev->dev);

1
drivers/misc/eeprom/Kconfig
View File

@@ -6,6 +6,7 @@ config EEPROM_AT24
depends on I2C && SYSFS
select NVMEM
select NVMEM_SYSFS
select REGMAP
select REGMAP_I2C
help
Enable this driver to get read/write support to most I2C EEPROMs