media: coda: avoid hardware lockups with more than 13 capture buffers

	} else {

		if (dev->devtype->product == CODA_960) {

			/*

			 * The CODA960 seems to have an internal list of

			 * buffers with 64 entries that includes the

			 * registered frame buffers as well as the rotator

			 * buffer output.

			 *

			 * ROT_INDEX needs to be < 0x40, but >

			 * ctx->num_internal_frames.

			 * It was previously assumed that the CODA960 has an

			 * internal list of 64 buffer entries that contains

			 * both the registered internal frame buffers as well

			 * as the rotator buffer output, and that the ROT_INDEX

			 * register must be set to a value between the last

			 * internal frame buffers' index and 64.

			 * At least on firmware version 3.1.1 it turns out that

			 * setting ROT_INDEX to any value >= 32 causes CODA

			 * hangups that it can not recover from with the SRC VPU

			 * reset.

			 * It does appear to work however, to just set it to a

			 * fixed value in the [ctx->num_internal_frames, 31]

			 * range, for example CODA_MAX_FRAMEBUFFERS.

			 */

			coda_write(dev,

				   CODA_MAX_FRAMEBUFFERS + dst_buf->vb2_buf.index,

			coda_write(dev, CODA_MAX_FRAMEBUFFERS,

				   CODA9_CMD_DEC_PIC_ROT_INDEX);

			reg_addr = CODA9_CMD_DEC_PIC_ROT_ADDR_Y;