board: acer: picasso: add Acer Iconia Tab A500 support
The Acer Iconia A500 is a tablet computer designed, developed and
marketed by Acer Inc. It is powered by 1 GHz Nvidia Tegra 2 processor
and 1GB DDR2 RAM. The A500 is sold with 64 GB, although both 16 GB
and 32 GB models are available.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/board/acer/picasso/picasso.c b/board/acer/picasso/picasso.c
new file mode 100644
index 0000000..d3e600c
--- /dev/null
+++ b/board/acer/picasso/picasso.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * (C) Copyright 2024
+ * Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+/* Picasso derives from Ventana board */
+
+#include <dm.h>
+#include <i2c.h>
+#include <log.h>
+#include <linux/delay.h>
+
+#define TPS6586X_I2C_ADDRESS 0x34
+#define TPS6586X_SUPPLYENE 0x14
+#define EXITSLREQ_BIT BIT(1)
+#define SLEEP_MODE_BIT BIT(3)
+
+#ifdef CONFIG_CMD_POWEROFF
+int do_poweroff(struct cmd_tbl *cmdtp,
+ int flag, int argc, char *const argv[])
+{
+ struct udevice *dev;
+ uchar data_buffer[1];
+ int ret;
+
+ ret = i2c_get_chip_for_busnum(0, TPS6586X_I2C_ADDRESS, 1, &dev);
+ if (ret) {
+ log_debug("cannot find PMIC I2C chip\n");
+ return 0;
+ }
+
+ ret = dm_i2c_read(dev, TPS6586X_SUPPLYENE, data_buffer, 1);
+ if (ret)
+ return ret;
+
+ data_buffer[0] &= ~EXITSLREQ_BIT;
+
+ ret = dm_i2c_write(dev, TPS6586X_SUPPLYENE, data_buffer, 1);
+ if (ret)
+ return ret;
+
+ data_buffer[0] |= SLEEP_MODE_BIT;
+
+ ret = dm_i2c_write(dev, TPS6586X_SUPPLYENE, data_buffer, 1);
+ if (ret)
+ return ret;
+
+ // wait some time and then print error
+ mdelay(5000);
+ printf("Failed to power off!!!\n");
+ return 1;
+}
+#endif