Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:

 - new driver for ICY, an Amiga Zorro card :)

 - axxia driver gained slave mode support, NXP driver gained ACPI

 - the slave EEPROM backend gained 16 bit address support

 - and lots of regular driver updates and reworks

* 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (52 commits)
  i2c: tegra: Move suspend handling to NOIRQ phase
  i2c: imx: ACPI support for NXP i2c controller
  i2c: uniphier(-f): remove all dev_dbg()
  i2c: uniphier(-f): use devm_platform_ioremap_resource()
  i2c: slave-eeprom: Add comment about address handling
  i2c: exynos5: Remove IRQF_ONESHOT
  i2c: stm32f7: Make structure stm32f7_i2c_algo constant
  i2c: cht-wc: drop check because i2c_unregister_device() is NULL safe
  i2c-eeprom_slave: Add support for more eeprom models
  i2c: fsi: Add of_put_node() before break
  i2c: synquacer: Make synquacer_i2c_ops constant
  i2c: hix5hd2: Remove IRQF_ONESHOT
  i2c: i801: Use iTCO version 6 in Cannon Lake PCH and beyond
  watchdog: iTCO: Add support for Cannon Lake PCH iTCO
  i2c: iproc: Make bcm_iproc_i2c_quirks constant
  i2c: iproc: Add full name of devicetree node to adapter name
  i2c: piix4: Add ACPI support
  i2c: piix4: Fix probing of reserved ports on AMD Family 16h Model 30h
  i2c: ocores: use request_any_context_irq() to register IRQ handler
  i2c: designware: Fix optional reset error handling
  ...

1 files changed, 24 insertions, 2 deletions

diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index c559f706ae7e..156360e37714 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -48,6 +48,7 @@
 
 /* Includes */
 #include <linux/acpi.h>			/* For ACPI support */
+#include <linux/bits.h>			/* For BIT() */
 #include <linux/module.h>		/* For module specific items */
 #include <linux/moduleparam.h>		/* For new moduleparam's */
 #include <linux/types.h>		/* For standard types (like size_t) */
@@ -215,6 +216,23 @@ static int update_no_reboot_bit_mem(void *priv, bool set)
 	return 0;
 }
 
+static int update_no_reboot_bit_cnt(void *priv, bool set)
+{
+	struct iTCO_wdt_private *p = priv;
+	u16 val, newval;
+
+	val = inw(TCO1_CNT(p));
+	if (set)
+		val |= BIT(0);
+	else
+		val &= ~BIT(0);
+	outw(val, TCO1_CNT(p));
+	newval = inw(TCO1_CNT(p));
+
+	/* make sure the update is successful */
+	return val != newval ? -EIO : 0;
+}
+
 static void iTCO_wdt_no_reboot_bit_setup(struct iTCO_wdt_private *p,
 		struct itco_wdt_platform_data *pdata)
 {
@@ -224,7 +242,9 @@ static void iTCO_wdt_no_reboot_bit_setup(struct iTCO_wdt_private *p,
 		return;
 	}
 
-	if (p->iTCO_version >= 2)
+	if (p->iTCO_version >= 6)
+		p->update_no_reboot_bit = update_no_reboot_bit_cnt;
+	else if (p->iTCO_version >= 2)
 		p->update_no_reboot_bit = update_no_reboot_bit_mem;
 	else if (p->iTCO_version == 1)
 		p->update_no_reboot_bit = update_no_reboot_bit_pci;
@@ -452,7 +472,8 @@ static int iTCO_wdt_probe(struct platform_device *pdev)
 	 * Get the Memory-Mapped GCS or PMC register, we need it for the
 	 * NO_REBOOT flag (TCO v2 and v3).
 	 */
-	if (p->iTCO_version >= 2 && !pdata->update_no_reboot_bit) {
+	if (p->iTCO_version >= 2 && p->iTCO_version < 6 &&
+	    !pdata->update_no_reboot_bit) {
 		p->gcs_pmc_res = platform_get_resource(pdev,
 						       IORESOURCE_MEM,
 						       ICH_RES_MEM_GCS_PMC);
@@ -502,6 +523,7 @@ static int iTCO_wdt_probe(struct platform_device *pdev)
 
 	/* Clear out the (probably old) status */
 	switch (p->iTCO_version) {
+	case 6:
 	case 5:
 	case 4:
 		outw(0x0008, TCO1_STS(p)); /* Clear the Time Out Status bit */