Merge tag 'leds-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds

Pull LED updates from Lee Jones:

 - Allow struct bin_attribute instances to be placed in read-only memory
   for enhanced protection

 - Fix a memory leak in the cht-wcove driver by using
   devm_led_classdev_register()

 - Fix an OF node reference leak in the netxbig driver

 - Ensure PWM is disabled properly in pwm-multicolor suspend

 - Add support for Texas Instruments LP8864, LP8864S, LP8866
   LED-backlight drivers

 - Add support for STMicroelectronics's LED1202 12-channel LED driver

 - Convert LP8860 bindings to YAML format

 - Add bindings for the TI LP8864/LP8866 LED drivers

 - Add LED1202 LED controller bindings

 - Fix path to color definitions in leds-class-multicolor.yaml

 - Add pm660l compatible to qcom,spmi-flash-led bindings

 - Extend cznic,turris-omnia-leds binding with interrupts property

 - Add documentation for the STMicroelectronics LED1202 driver

 - Add entry for AAEON UP board FPGA drivers in MAINTAINERS

 - Fix a wrong format specifier in the ledtrig-activity driver

 - Fix a bug in the lp8860 driver where only half of the EEPROM was
   written

* tag 'leds-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (28 commits)
  leds: triggers: Constify 'struct bin_attribute'
  leds: cht-wcove: Use devm_led_classdev_register() to avoid memory leak
  leds: lp8864: Add support for Texas Instruments LP8864, LP8864S, LP8866 LED-backlights
  dt-bindings: leds: Convert LP8860 into YAML format
  leds: Add LED1202 I2C driver
  dt-bindings: leds: Add LED1202 LED Controller
  Documentation:leds: Add leds-st1202.rst
  leds: pwm-multicolor: Disable PWM when going to suspend
  leds: netxbig: Fix an OF node reference leak in netxbig_leds_get_of_pdata()
  turris-omnia-mcu-interface.h: Move macro definitions outside of enums
  MAINTAINERS: Add entry for AAEON UP board FPGA drivers
  leds: Add AAEON UP board LED driver
  leds: trigger: netdev: Check offload ability on interface up
  leds: turris-omnia: Use uppercase first letter in all comments
  leds: turris-omnia: Use dev_err_probe() where appropriate
  leds: turris-omnia: Inform about missing LED gamma correction feature in the MCU driver
  platform: cznic: turris-omnia-mcu: Inform about missing LED panel brightness change interrupt feature
  leds: turris-omnia: Notify sysfs on MCU global LEDs brightness change
  leds: turris-omnia: Document driver private structures
  dt-bindings: leds: cznic,turris-omnia-leds: Allow interrupts property
  ...

1 files changed, 149 insertions, 1 deletions

diff --git a/include/linux/turris-omnia-mcu-interface.h b/include/linux/turris-omnia-mcu-interface.h
index 2da8cbeb158a..38b45ab00053 100644
--- a/include/linux/turris-omnia-mcu-interface.h
+++ b/include/linux/turris-omnia-mcu-interface.h
@@ -9,7 +9,10 @@
 #define __TURRIS_OMNIA_MCU_INTERFACE_H
 
 #include <linux/bitfield.h>
-#include <linux/bits.h>
+#include <linux/bitops.h>
+#include <linux/types.h>
+#include <linux/unaligned.h>
+#include <asm/byteorder.h>
 
 enum omnia_commands_e {
 	OMNIA_CMD_GET_STATUS_WORD		= 0x01, /* slave sends status word back */
@@ -236,6 +239,20 @@ enum omnia_int_e {
 	OMNIA_INT_LAN5_LED1		= BIT(31),
 };
 
+enum omnia_cmd_led_mode_e {
+	OMNIA_CMD_LED_MODE_LED_MASK	= GENMASK(3, 0),
+	OMNIA_CMD_LED_MODE_USER		= BIT(4),
+};
+
+#define OMNIA_CMD_LED_MODE_LED(_l)	FIELD_PREP(OMNIA_CMD_LED_MODE_LED_MASK, _l)
+
+enum omnia_cmd_led_state_e {
+	OMNIA_CMD_LED_STATE_LED_MASK	= GENMASK(3, 0),
+	OMNIA_CMD_LED_STATE_ON		= BIT(4),
+};
+
+#define OMNIA_CMD_LED_STATE_LED(_l)	FIELD_PREP(OMNIA_CMD_LED_STATE_LED_MASK, _l)
+
 enum omnia_cmd_poweroff_e {
 	OMNIA_CMD_POWER_OFF_POWERON_BUTTON	= BIT(0),
 	OMNIA_CMD_POWER_OFF_MAGIC		= 0xdead,
@@ -246,4 +263,135 @@ enum omnia_cmd_usb_ovc_prot_e {
 	OMNIA_CMD_xET_USB_OVC_PROT_ENABLE	= BIT(4),
 };
 
+/* Command execution functions */
+
+struct i2c_client;
+
+int omnia_cmd_write_read(const struct i2c_client *client,
+			 void *cmd, unsigned int cmd_len,
+			 void *reply, unsigned int reply_len);
+
+static inline int omnia_cmd_write(const struct i2c_client *client, void *cmd,
+				  unsigned int len)
+{
+	return omnia_cmd_write_read(client, cmd, len, NULL, 0);
+}
+
+static inline int omnia_cmd_write_u8(const struct i2c_client *client, u8 cmd,
+				     u8 val)
+{
+	u8 buf[2] = { cmd, val };
+
+	return omnia_cmd_write(client, buf, sizeof(buf));
+}
+
+static inline int omnia_cmd_write_u16(const struct i2c_client *client, u8 cmd,
+				      u16 val)
+{
+	u8 buf[3];
+
+	buf[0] = cmd;
+	put_unaligned_le16(val, &buf[1]);
+
+	return omnia_cmd_write(client, buf, sizeof(buf));
+}
+
+static inline int omnia_cmd_write_u32(const struct i2c_client *client, u8 cmd,
+				      u32 val)
+{
+	u8 buf[5];
+
+	buf[0] = cmd;
+	put_unaligned_le32(val, &buf[1]);
+
+	return omnia_cmd_write(client, buf, sizeof(buf));
+}
+
+static inline int omnia_cmd_read(const struct i2c_client *client, u8 cmd,
+				 void *reply, unsigned int len)
+{
+	return omnia_cmd_write_read(client, &cmd, 1, reply, len);
+}
+
+static inline unsigned int
+omnia_compute_reply_length(unsigned long mask, bool interleaved,
+			   unsigned int offset)
+{
+	if (!mask)
+		return 0;
+
+	return ((__fls(mask) >> 3) << interleaved) + 1 + offset;
+}
+
+/* Returns 0 on success */
+static inline int omnia_cmd_read_bits(const struct i2c_client *client, u8 cmd,
+				      unsigned long bits, unsigned long *dst)
+{
+	__le32 reply;
+	int err;
+
+	if (!bits) {
+		*dst = 0;
+		return 0;
+	}
+
+	err = omnia_cmd_read(client, cmd, &reply,
+			     omnia_compute_reply_length(bits, false, 0));
+	if (err)
+		return err;
+
+	*dst = le32_to_cpu(reply) & bits;
+
+	return 0;
+}
+
+static inline int omnia_cmd_read_bit(const struct i2c_client *client, u8 cmd,
+				     unsigned long bit)
+{
+	unsigned long reply;
+	int err;
+
+	err = omnia_cmd_read_bits(client, cmd, bit, &reply);
+	if (err)
+		return err;
+
+	return !!reply;
+}
+
+static inline int omnia_cmd_read_u32(const struct i2c_client *client, u8 cmd,
+				     u32 *dst)
+{
+	__le32 reply;
+	int err;
+
+	err = omnia_cmd_read(client, cmd, &reply, sizeof(reply));
+	if (err)
+		return err;
+
+	*dst = le32_to_cpu(reply);
+
+	return 0;
+}
+
+static inline int omnia_cmd_read_u16(const struct i2c_client *client, u8 cmd,
+				     u16 *dst)
+{
+	__le16 reply;
+	int err;
+
+	err = omnia_cmd_read(client, cmd, &reply, sizeof(reply));
+	if (err)
+		return err;
+
+	*dst = le16_to_cpu(reply);
+
+	return 0;
+}
+
+static inline int omnia_cmd_read_u8(const struct i2c_client *client, u8 cmd,
+				    u8 *reply)
+{
+	return omnia_cmd_read(client, cmd, reply, sizeof(*reply));
+}
+
 #endif /* __TURRIS_OMNIA_MCU_INTERFACE_H */