Merge "msm: camera: icp: Reduce delay between subsequent HFI polls" into dev/msm-4.9-camx

#define HFI_MAX_POLL_TRY 5

#define HFI_MAX_PC_POLL_TRY 50

#define HFI_POLL_TRY_SLEEP 20

static struct hfi_info *g_hfi;

unsigned int g_icp_mmu_hdl;

static DEFINE_MUTEX(hfi_cmd_q_mutex);

	uint32_t val;

	uint32_t try = 0;

	while (try < HFI_MAX_POLL_TRY) {

		data = cam_io_r(icp_base + HFI_REG_A5_CSR_A5_STATUS);

	while (try < HFI_MAX_PC_POLL_TRY) {

		data = cam_io_r_mb(icp_base + HFI_REG_A5_CSR_A5_STATUS);

		CAM_DBG(CAM_HFI, "wfi status = %x\n", (int)data);

		if (data & ICP_CSR_A5_STATUS_WFI)

		 * and Host can the proceed. No interrupt is expected from FW

		 * at this time.

		 */

		msleep(100);

		msleep_interruptible(HFI_POLL_TRY_SLEEP);

		try++;

	}