Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / hwmon / adt7460.c

diff --git a/qemu/roms/u-boot/drivers/hwmon/adt7460.c b/qemu/roms/u-boot/drivers/hwmon/adt7460.c
new file mode 100644 (file)
index 0000000..fd05c17
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/hwmon/adt7460.c
@@ -0,0 +1,73 @@
+/*
+ * (C) Copyright 2008
+ * Ricado Ribalda-Universidad Autonoma de Madrid, ricardo.ribalda@uam.es
+ * This work has been supported by: QTechnology  http://qtec.com/
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <dtt.h>
+
+#define ADT7460_ADDRESS                0x2c
+#define ADT7460_INVALID                128
+#define ADT7460_CONFIG         0x40
+#define ADT7460_REM1_TEMP      0x25
+#define ADT7460_LOCAL_TEMP     0x26
+#define ADT7460_REM2_TEMP      0x27
+
+int dtt_read(int sensor, int reg)
+{
+       u8 dir = reg;
+       u8 data;
+
+       if (i2c_read(ADT7460_ADDRESS, dir, 1, &data, 1) == -1)
+               return -1;
+       if (data == ADT7460_INVALID)
+               return -1;
+
+       return data;
+}
+
+int dtt_write(int sensor, int reg, int val)
+{
+       u8 dir = reg;
+       u8 data = val;
+
+       if (i2c_write(ADT7460_ADDRESS, dir, 1, &data, 1) == -1)
+               return -1;
+
+       return 0;
+}
+
+int dtt_init_one(int sensor)
+{
+       printf("ADT7460 at I2C address 0x%2x\n", ADT7460_ADDRESS);
+
+       if (dtt_write(0, ADT7460_CONFIG, 1) == -1) {
+               puts("Error initialiting ADT7460\n");
+               return -1;
+       }
+
+       return 0;
+}
+
+int dtt_get_temp(int sensor)
+{
+       int aux;
+       u8 table[] =
+           { ADT7460_REM1_TEMP, ADT7460_LOCAL_TEMP, ADT7460_REM2_TEMP };
+
+       if (sensor > 2) {
+               puts("DTT sensor does not exist\n");
+               return -1;
+       }
+
+       aux = dtt_read(0, table[sensor]);
+       if (aux == -1) {
+               puts("DTT temperature read failed\n");
+               return -1;
+       }
+
+       return aux;
+}