hw/arm: Add I2C sensors for NPCM750 eval board

Add I2C temperature sensors for NPCM750 eval board.

Reviewed-by: Doug Evans<dje@google.com>
Reviewed-by: Tyrong Ting<kfting@nuvoton.com>
Signed-off-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210210220426.3577804-3-wuhaotsh@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/hw/arm/npcm7xx_boards.c b/hw/arm/npcm7xx_boards.c
index 3fdd5ca..47a215b 100644
--- a/hw/arm/npcm7xx_boards.c
+++ b/hw/arm/npcm7xx_boards.c
@@ -98,6 +98,24 @@ static NPCM7xxState *npcm7xx_create_soc(MachineState *machine,
     return NPCM7XX(obj);
 }
 
+static I2CBus *npcm7xx_i2c_get_bus(NPCM7xxState *soc, uint32_t num)
+{
+    g_assert(num < ARRAY_SIZE(soc->smbus));
+    return I2C_BUS(qdev_get_child_bus(DEVICE(&soc->smbus[num]), "i2c-bus"));
+}
+
+static void npcm750_evb_i2c_init(NPCM7xxState *soc)
+{
+    /* lm75 temperature sensor on SVB, tmp105 is compatible */
+    i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 0), "tmp105", 0x48);
+    /* lm75 temperature sensor on EB, tmp105 is compatible */
+    i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 1), "tmp105", 0x48);
+    /* tmp100 temperature sensor on EB, tmp105 is compatible */
+    i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 2), "tmp105", 0x48);
+    /* tmp100 temperature sensor on SVB, tmp105 is compatible */
+    i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 6), "tmp105", 0x48);
+}
+
 static void npcm750_evb_init(MachineState *machine)
 {
     NPCM7xxState *soc;
@@ -108,6 +126,7 @@ static void npcm750_evb_init(MachineState *machine)
 
     npcm7xx_load_bootrom(machine, soc);
     npcm7xx_connect_flash(&soc->fiu[0], 0, "w25q256", drive_get(IF_MTD, 0, 0));
+    npcm750_evb_i2c_init(soc);
     npcm7xx_load_kernel(machine, soc);
 }