--- /dev/null
+/*
+ * Copyright © 2007 Dave Mueller
+ *
+ * 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:
+ * Dave Mueller <dave.mueller@gmx.ch>
+ *
+ */
+
+#include "dvo.h"
+
+/* register definitions according to the TFP410 data sheet */
+#define TFP410_VID 0x014C
+#define TFP410_DID 0x0410
+
+#define TFP410_VID_LO 0x00
+#define TFP410_VID_HI 0x01
+#define TFP410_DID_LO 0x02
+#define TFP410_DID_HI 0x03
+#define TFP410_REV 0x04
+
+#define TFP410_CTL_1 0x08
+#define TFP410_CTL_1_TDIS (1<<6)
+#define TFP410_CTL_1_VEN (1<<5)
+#define TFP410_CTL_1_HEN (1<<4)
+#define TFP410_CTL_1_DSEL (1<<3)
+#define TFP410_CTL_1_BSEL (1<<2)
+#define TFP410_CTL_1_EDGE (1<<1)
+#define TFP410_CTL_1_PD (1<<0)
+
+#define TFP410_CTL_2 0x09
+#define TFP410_CTL_2_VLOW (1<<7)
+#define TFP410_CTL_2_MSEL_MASK (0x7<<4)
+#define TFP410_CTL_2_MSEL (1<<4)
+#define TFP410_CTL_2_TSEL (1<<3)
+#define TFP410_CTL_2_RSEN (1<<2)
+#define TFP410_CTL_2_HTPLG (1<<1)
+#define TFP410_CTL_2_MDI (1<<0)
+
+#define TFP410_CTL_3 0x0A
+#define TFP410_CTL_3_DK_MASK (0x7<<5)
+#define TFP410_CTL_3_DK (1<<5)
+#define TFP410_CTL_3_DKEN (1<<4)
+#define TFP410_CTL_3_CTL_MASK (0x7<<1)
+#define TFP410_CTL_3_CTL (1<<1)
+
+#define TFP410_USERCFG 0x0B
+
+#define TFP410_DE_DLY 0x32
+
+#define TFP410_DE_CTL 0x33
+#define TFP410_DE_CTL_DEGEN (1<<6)
+#define TFP410_DE_CTL_VSPOL (1<<5)
+#define TFP410_DE_CTL_HSPOL (1<<4)
+#define TFP410_DE_CTL_DEDLY8 (1<<0)
+
+#define TFP410_DE_TOP 0x34
+
+#define TFP410_DE_CNT_LO 0x36
+#define TFP410_DE_CNT_HI 0x37
+
+#define TFP410_DE_LIN_LO 0x38
+#define TFP410_DE_LIN_HI 0x39
+
+#define TFP410_H_RES_LO 0x3A
+#define TFP410_H_RES_HI 0x3B
+
+#define TFP410_V_RES_LO 0x3C
+#define TFP410_V_RES_HI 0x3D
+
+struct tfp410_priv {
+ bool quiet;
+};
+
+static bool tfp410_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
+{
+ struct tfp410_priv *tfp = dvo->dev_priv;
+ struct i2c_adapter *adapter = dvo->i2c_bus;
+ u8 out_buf[2];
+ u8 in_buf[2];
+
+ struct i2c_msg msgs[] = {
+ {
+ .addr = dvo->slave_addr,
+ .flags = 0,
+ .len = 1,
+ .buf = out_buf,
+ },
+ {
+ .addr = dvo->slave_addr,
+ .flags = I2C_M_RD,
+ .len = 1,
+ .buf = in_buf,
+ }
+ };
+
+ out_buf[0] = addr;
+ out_buf[1] = 0;
+
+ if (i2c_transfer(adapter, msgs, 2) == 2) {
+ *ch = in_buf[0];
+ return true;
+ }
+
+ if (!tfp->quiet) {
+ DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
+ addr, adapter->name, dvo->slave_addr);
+ }
+ return false;
+}
+
+static bool tfp410_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
+{
+ struct tfp410_priv *tfp = dvo->dev_priv;
+ struct i2c_adapter *adapter = dvo->i2c_bus;
+ uint8_t out_buf[2];
+ struct i2c_msg msg = {
+ .addr = dvo->slave_addr,
+ .flags = 0,
+ .len = 2,
+ .buf = out_buf,
+ };
+
+ out_buf[0] = addr;
+ out_buf[1] = ch;
+
+ if (i2c_transfer(adapter, &msg, 1) == 1)
+ return true;
+
+ if (!tfp->quiet) {
+ DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
+ addr, adapter->name, dvo->slave_addr);
+ }
+
+ return false;
+}
+
+static int tfp410_getid(struct intel_dvo_device *dvo, int addr)
+{
+ uint8_t ch1, ch2;
+
+ if (tfp410_readb(dvo, addr+0, &ch1) &&
+ tfp410_readb(dvo, addr+1, &ch2))
+ return ((ch2 << 8) & 0xFF00) | (ch1 & 0x00FF);
+
+ return -1;
+}
+
+/* Ti TFP410 driver for chip on i2c bus */
+static bool tfp410_init(struct intel_dvo_device *dvo,
+ struct i2c_adapter *adapter)
+{
+ /* this will detect the tfp410 chip on the specified i2c bus */
+ struct tfp410_priv *tfp;
+ int id;
+
+ tfp = kzalloc(sizeof(struct tfp410_priv), GFP_KERNEL);
+ if (tfp == NULL)
+ return false;
+
+ dvo->i2c_bus = adapter;
+ dvo->dev_priv = tfp;
+ tfp->quiet = true;
+
+ if ((id = tfp410_getid(dvo, TFP410_VID_LO)) != TFP410_VID) {
+ DRM_DEBUG_KMS("tfp410 not detected got VID %X: from %s "
+ "Slave %d.\n",
+ id, adapter->name, dvo->slave_addr);
+ goto out;
+ }
+
+ if ((id = tfp410_getid(dvo, TFP410_DID_LO)) != TFP410_DID) {
+ DRM_DEBUG_KMS("tfp410 not detected got DID %X: from %s "
+ "Slave %d.\n",
+ id, adapter->name, dvo->slave_addr);
+ goto out;
+ }
+ tfp->quiet = false;
+ return true;
+out:
+ kfree(tfp);
+ return false;
+}
+
+static enum drm_connector_status tfp410_detect(struct intel_dvo_device *dvo)
+{
+ enum drm_connector_status ret = connector_status_disconnected;
+ uint8_t ctl2;
+
+ if (tfp410_readb(dvo, TFP410_CTL_2, &ctl2)) {
+ if (ctl2 & TFP410_CTL_2_RSEN)
+ ret = connector_status_connected;
+ else
+ ret = connector_status_disconnected;
+ }
+
+ return ret;
+}
+
+static enum drm_mode_status tfp410_mode_valid(struct intel_dvo_device *dvo,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static void tfp410_mode_set(struct intel_dvo_device *dvo,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ /* As long as the basics are set up, since we don't have clock dependencies
+ * in the mode setup, we can just leave the registers alone and everything
+ * will work fine.
+ */
+ /* don't do much */
+ return;
+}
+
+/* set the tfp410 power state */
+static void tfp410_dpms(struct intel_dvo_device *dvo, bool enable)
+{
+ uint8_t ctl1;
+
+ if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
+ return;
+
+ if (enable)
+ ctl1 |= TFP410_CTL_1_PD;
+ else
+ ctl1 &= ~TFP410_CTL_1_PD;
+
+ tfp410_writeb(dvo, TFP410_CTL_1, ctl1);
+}
+
+static bool tfp410_get_hw_state(struct intel_dvo_device *dvo)
+{
+ uint8_t ctl1;
+
+ if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
+ return false;
+
+ if (ctl1 & TFP410_CTL_1_PD)
+ return true;
+ else
+ return false;
+}
+
+static void tfp410_dump_regs(struct intel_dvo_device *dvo)
+{
+ uint8_t val, val2;
+
+ tfp410_readb(dvo, TFP410_REV, &val);
+ DRM_DEBUG_KMS("TFP410_REV: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_CTL_1, &val);
+ DRM_DEBUG_KMS("TFP410_CTL1: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_CTL_2, &val);
+ DRM_DEBUG_KMS("TFP410_CTL2: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_CTL_3, &val);
+ DRM_DEBUG_KMS("TFP410_CTL3: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_USERCFG, &val);
+ DRM_DEBUG_KMS("TFP410_USERCFG: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_DE_DLY, &val);
+ DRM_DEBUG_KMS("TFP410_DE_DLY: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_DE_CTL, &val);
+ DRM_DEBUG_KMS("TFP410_DE_CTL: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_DE_TOP, &val);
+ DRM_DEBUG_KMS("TFP410_DE_TOP: 0x%02X\n", val);
+ tfp410_readb(dvo, TFP410_DE_CNT_LO, &val);
+ tfp410_readb(dvo, TFP410_DE_CNT_HI, &val2);
+ DRM_DEBUG_KMS("TFP410_DE_CNT: 0x%02X%02X\n", val2, val);
+ tfp410_readb(dvo, TFP410_DE_LIN_LO, &val);
+ tfp410_readb(dvo, TFP410_DE_LIN_HI, &val2);
+ DRM_DEBUG_KMS("TFP410_DE_LIN: 0x%02X%02X\n", val2, val);
+ tfp410_readb(dvo, TFP410_H_RES_LO, &val);
+ tfp410_readb(dvo, TFP410_H_RES_HI, &val2);
+ DRM_DEBUG_KMS("TFP410_H_RES: 0x%02X%02X\n", val2, val);
+ tfp410_readb(dvo, TFP410_V_RES_LO, &val);
+ tfp410_readb(dvo, TFP410_V_RES_HI, &val2);
+ DRM_DEBUG_KMS("TFP410_V_RES: 0x%02X%02X\n", val2, val);
+}
+
+static void tfp410_destroy(struct intel_dvo_device *dvo)
+{
+ struct tfp410_priv *tfp = dvo->dev_priv;
+
+ if (tfp) {
+ kfree(tfp);
+ dvo->dev_priv = NULL;
+ }
+}
+
+struct intel_dvo_dev_ops tfp410_ops = {
+ .init = tfp410_init,
+ .detect = tfp410_detect,
+ .mode_valid = tfp410_mode_valid,
+ .mode_set = tfp410_mode_set,
+ .dpms = tfp410_dpms,
+ .get_hw_state = tfp410_get_hw_state,
+ .dump_regs = tfp410_dump_regs,
+ .destroy = tfp410_destroy,
+};
Code Review / kvmfornfv.git / blobdiff