+++ /dev/null
-/*
- * Copyright © 2013 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Author: Jani Nikula <jani.nikula@intel.com>
- */
-
-#include <linux/export.h>
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <video/mipi_display.h>
-#include "i915_drv.h"
-#include "intel_drv.h"
-#include "intel_dsi.h"
-#include "intel_dsi_cmd.h"
-
-/*
- * XXX: MIPI_DATA_ADDRESS, MIPI_DATA_LENGTH, MIPI_COMMAND_LENGTH, and
- * MIPI_COMMAND_ADDRESS registers.
- *
- * Apparently these registers provide a MIPI adapter level way to send (lots of)
- * commands and data to the receiver, without having to write the commands and
- * data to MIPI_{HS,LP}_GEN_{CTRL,DATA} registers word by word.
- *
- * Presumably for anything other than MIPI_DCS_WRITE_MEMORY_START and
- * MIPI_DCS_WRITE_MEMORY_CONTINUE (which are used to update the external
- * framebuffer in command mode displays) these are just an optimization that can
- * come later.
- *
- * For memory writes, these should probably be used for performance.
- */
-
-static void print_stat(struct intel_dsi *intel_dsi, enum port port)
-{
- struct drm_encoder *encoder = &intel_dsi->base.base;
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 val;
-
- val = I915_READ(MIPI_INTR_STAT(port));
-
-#define STAT_BIT(val, bit) (val) & (bit) ? " " #bit : ""
- DRM_DEBUG_KMS("MIPI_INTR_STAT(%c) = %08x"
- "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
- "\n", port_name(port), val,
- STAT_BIT(val, TEARING_EFFECT),
- STAT_BIT(val, SPL_PKT_SENT_INTERRUPT),
- STAT_BIT(val, GEN_READ_DATA_AVAIL),
- STAT_BIT(val, LP_GENERIC_WR_FIFO_FULL),
- STAT_BIT(val, HS_GENERIC_WR_FIFO_FULL),
- STAT_BIT(val, RX_PROT_VIOLATION),
- STAT_BIT(val, RX_INVALID_TX_LENGTH),
- STAT_BIT(val, ACK_WITH_NO_ERROR),
- STAT_BIT(val, TURN_AROUND_ACK_TIMEOUT),
- STAT_BIT(val, LP_RX_TIMEOUT),
- STAT_BIT(val, HS_TX_TIMEOUT),
- STAT_BIT(val, DPI_FIFO_UNDERRUN),
- STAT_BIT(val, LOW_CONTENTION),
- STAT_BIT(val, HIGH_CONTENTION),
- STAT_BIT(val, TXDSI_VC_ID_INVALID),
- STAT_BIT(val, TXDSI_DATA_TYPE_NOT_RECOGNISED),
- STAT_BIT(val, TXCHECKSUM_ERROR),
- STAT_BIT(val, TXECC_MULTIBIT_ERROR),
- STAT_BIT(val, TXECC_SINGLE_BIT_ERROR),
- STAT_BIT(val, TXFALSE_CONTROL_ERROR),
- STAT_BIT(val, RXDSI_VC_ID_INVALID),
- STAT_BIT(val, RXDSI_DATA_TYPE_NOT_REGOGNISED),
- STAT_BIT(val, RXCHECKSUM_ERROR),
- STAT_BIT(val, RXECC_MULTIBIT_ERROR),
- STAT_BIT(val, RXECC_SINGLE_BIT_ERROR),
- STAT_BIT(val, RXFALSE_CONTROL_ERROR),
- STAT_BIT(val, RXHS_RECEIVE_TIMEOUT_ERROR),
- STAT_BIT(val, RX_LP_TX_SYNC_ERROR),
- STAT_BIT(val, RXEXCAPE_MODE_ENTRY_ERROR),
- STAT_BIT(val, RXEOT_SYNC_ERROR),
- STAT_BIT(val, RXSOT_SYNC_ERROR),
- STAT_BIT(val, RXSOT_ERROR));
-#undef STAT_BIT
-}
-
-/* enable or disable command mode hs transmissions */
-void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable,
- enum port port)
-{
- struct drm_encoder *encoder = &intel_dsi->base.base;
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 temp;
- u32 mask = DBI_FIFO_EMPTY;
-
- if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & mask) == mask, 50))
- DRM_ERROR("Timeout waiting for DBI FIFO empty\n");
-
- temp = I915_READ(MIPI_HS_LP_DBI_ENABLE(port));
- temp &= DBI_HS_LP_MODE_MASK;
- I915_WRITE(MIPI_HS_LP_DBI_ENABLE(port), enable ? DBI_HS_MODE : DBI_LP_MODE);
-
- intel_dsi->hs = enable;
-}