@@ -90,7 +90,8 @@ i915-y += dvo_ch7017.o \
intel_lvds.o \
intel_panel.o \
intel_sdvo.o \
- intel_tv.o
+ intel_tv.o \
+ intel_lspcon.o
# virtual gpu code
i915-y += i915_vgpu.o
new file mode 100644
@@ -0,0 +1,114 @@
+/*
+ * Copyright © 2016 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.
+ *
+ * Authors:
+ * Shashank Sharma <shashank.sharma@intel.com>
+ * Akashdeep Sharma <akashdeep.sharma@intel.com>
+ *
+ */
+#include <drm/drm_edid.h>
+#include <drm/drm_atomic_helper.h>
+#include "intel_drv.h"
+
+#define LSPCON_I2C_ADDRESS 0x80
+#define LSPCON_MODE_CHANGE_OFFSET 0x40
+#define LSPCON_MODE_CHECK_OFFSET 0x41
+#define LSPCON_ADAPTER_SIGN_OFFSET 0x00
+#define LSPCON_IDENTIFIER_OFFSET 0x10
+#define LSPCON_IDENTIFIER_LENGTH 0x10
+#define LSPCON_ADAPTER 0xA8
+#define DP_TYPE2_ADAPTER 0xA0
+#define ADAPTER_TYPE_MASK 0xF0
+#define LSPCON_MODE_MASK 0x1
+
+struct intel_digital_port *lspcon_to_dig_port(struct intel_lspcon *lspcon)
+{
+ return container_of(lspcon, struct intel_digital_port, lspcon);
+}
+
+struct intel_hdmi *lspcon_to_hdmi(struct intel_lspcon *lspcon)
+{
+ return &lspcon_to_dig_port(lspcon)->hdmi;
+}
+
+struct intel_lspcon *enc_to_lspcon(struct drm_encoder *encoder)
+{
+ struct intel_digital_port *intel_dig_port =
+ container_of(encoder, struct intel_digital_port, base.base);
+ return &intel_dig_port->lspcon;
+}
+
+int lspcon_ioa_read(struct i2c_adapter *adapter, u8 *buffer,
+ u8 address, u8 offset, u8 no_of_bytes)
+{
+ int err = 0;
+
+ struct i2c_msg msgs[] = {
+ {
+ .addr = address >> 1,
+ .flags = 0,
+ .len = 1,
+ .buf = &offset,
+ }, {
+ .addr = address >> 1,
+ .flags = I2C_M_RD,
+ .len = no_of_bytes,
+ .buf = buffer,
+ }
+ };
+
+ /* I2C over AUX here */
+ err = adapter->algo->master_xfer(adapter, msgs, 2);
+ if (err < 0)
+ DRM_ERROR("LSPCON: Failed I2C over Aux read(addr=0x%x)\n",
+ (unsigned int)offset);
+
+ return err;
+}
+
+int lspcon_ioa_write(struct i2c_adapter *adapter, u8 *buffer,
+ u8 address, u8 offset, u8 no_of_bytes)
+{
+ int err = 0;
+
+ struct i2c_msg msgs[] = {
+ {
+ .addr = address >> 1,
+ .flags = 0,
+ .len = 1,
+ .buf = &offset,
+ }, {
+ .addr = address >> 1,
+ .flags = 0,
+ .len = no_of_bytes,
+ .buf = buffer,
+ }
+ };
+
+ /* I2C over AUX here */
+ err = adapter->algo->master_xfer(adapter, msgs, 2);
+ if (err < 0)
+ DRM_ERROR("LSPCON: Failed I2C over Aux write(addr=0x%x)\n",
+ (unsigned int)offset);
+
+ return err;
+}