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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-25 14:21:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-25 14:21:18 -0800
commit7067739df23ffd641ca99c967830e0ed2ba39eab (patch)
treea29417bb61cc9802502b4ded00b4c706cf25fc10 /drivers/misc
parentac1820fb286b552b6885d40ab34f1e59b815f1f1 (diff)
parent4c21541d8da17fbe94ecadbfc913d6dff3be7ca2 (diff)
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Merge branch 'i2c/for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang: "I2C has for you two new drivers (Tegra BPMP and STM32F4), interrupt support for pca954x muxes, and a bunch of driver bugfixes and improvements. Nothing really special this cycle. A few commits have been added to my tree just recently. Those are the Tegra BPMP driver and a few straightforward bugfixes or cleanups which I prefer to have upstream rather soonish. The rest had proper linux-next exposure" * 'i2c/for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (25 commits) i2c: thunderx: Replace pci_enable_msix() i2c: exynos5: fix arbitration lost handling i2c: exynos5: disable fifo-almost-empty irq signal when necessary i2c: at91: ensure state is restored after suspending i2c: bcm2835: Avoid possible NULL ptr dereference i2c: Add Tegra BPMP I2C proxy driver dt-bindings: Add Tegra186 BPMP I2C binding misc: eeprom: at24: use device_property_*() functions instead of of_get_property() i2c: mux: pca954x: Add interrupt controller support dt: bindings: i2c-mux-pca954x: Add documentation for interrupt controller i2c: mux: pca954x: Add missing pca9542 definition to chip_desc i2c: riic: correctly finish transfers i2c: i801: Add support for Intel Gemini Lake i2c: mux: pca9541: Export OF device ID table as module aliases i2c: mux: pca954x: Export OF device ID table as module aliases i2c: mux: mlxcpld: remove unused including <linux/version.h> i2c: busses: constify i2c_algorithm structures i2c: i2c-mux-gpio: rename i2c-gpio-mux to i2c-mux-gpio i2c: sh_mobile: document support for r8a7796 (R-Car M3-W) i2c: i2c-cros-ec-tunnel: Reduce logging noise ...
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/eeprom/at24.c45
1 files changed, 19 insertions, 26 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 051b14766ef9..764ff5df0dbc 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -19,7 +19,7 @@
#include <linux/log2.h>
#include <linux/bitops.h>
#include <linux/jiffies.h>
-#include <linux/of.h>
+#include <linux/property.h>
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/nvmem-provider.h>
@@ -562,26 +562,26 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count)
return 0;
}
-#ifdef CONFIG_OF
-static void at24_get_ofdata(struct i2c_client *client,
- struct at24_platform_data *chip)
+static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip)
{
- const __be32 *val;
- struct device_node *node = client->dev.of_node;
-
- if (node) {
- if (of_get_property(node, "read-only", NULL))
- chip->flags |= AT24_FLAG_READONLY;
- val = of_get_property(node, "pagesize", NULL);
- if (val)
- chip->page_size = be32_to_cpup(val);
+ int err;
+ u32 val;
+
+ if (device_property_present(dev, "read-only"))
+ chip->flags |= AT24_FLAG_READONLY;
+
+ err = device_property_read_u32(dev, "pagesize", &val);
+ if (!err) {
+ chip->page_size = val;
+ } else {
+ /*
+ * This is slow, but we can't know all eeproms, so we better
+ * play safe. Specifying custom eeprom-types via platform_data
+ * is recommended anyhow.
+ */
+ chip->page_size = 1;
}
}
-#else
-static void at24_get_ofdata(struct i2c_client *client,
- struct at24_platform_data *chip)
-{ }
-#endif /* CONFIG_OF */
static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
@@ -613,15 +613,8 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
chip.byte_len = BIT(magic & AT24_BITMASK(AT24_SIZE_BYTELEN));
magic >>= AT24_SIZE_BYTELEN;
chip.flags = magic & AT24_BITMASK(AT24_SIZE_FLAGS);
- /*
- * This is slow, but we can't know all eeproms, so we better
- * play safe. Specifying custom eeprom-types via platform_data
- * is recommended anyhow.
- */
- chip.page_size = 1;
- /* update chipdata if OF is present */
- at24_get_ofdata(client, &chip);
+ at24_get_pdata(&client->dev, &chip);
chip.setup = NULL;
chip.context = NULL;