device/mipi: Move to drivers/mipi

Sounds like we prefer to have this under drivers/ instead of device/.
Also move all MIPI-related headers out from device/ into their own
directory.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ib3e66954b8f0cf85b28d8d186b09d7846707559d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57128
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/drivers/mipi/panel.c b/src/drivers/mipi/panel.c
new file mode 100644
index 0000000000..e8469a6e36
--- /dev/null
+++ b/src/drivers/mipi/panel.c
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <delay.h>
+#include <mipi/panel.h>
+
+cb_err_t mipi_panel_parse_init_commands(const void *buf, mipi_cmd_func_t cmd_func)
+{
+	const struct panel_init_command *init = buf;
+
+	/*
+	 * The given commands should be in a buffer containing a packed array of
+	 * panel_init_command and each element may be in variable size so we have
+	 * to parse and scan.
+	 */
+
+	for (; init->cmd != PANEL_CMD_END; init = (const void *)buf) {
+		/*
+		 * For some commands like DELAY, the init->len should not be
+		 * counted for buf.
+		 */
+		buf += sizeof(*init);
+
+		u32 cmd = init->cmd, len = init->len;
+
+		switch (cmd) {
+		case PANEL_CMD_DELAY:
+			mdelay(len);
+			break;
+
+		case PANEL_CMD_DCS:
+		case PANEL_CMD_GENERIC:
+			buf += len;
+
+			cb_err_t ret = cmd_func(cmd, init->data, len);
+			if (ret != CB_SUCCESS)
+				return ret;
+			break;
+
+		default:
+			printk(BIOS_ERR, "%s: Unknown command code: %d, "
+			       "abort panel initialization.\n", __func__, cmd);
+			return CB_ERR;
+		}
+	}
+
+	return CB_SUCCESS;
+}