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-rw-r--r--src/tfp410/tfp410.c265
1 files changed, 265 insertions, 0 deletions
diff --git a/src/tfp410/tfp410.c b/src/tfp410/tfp410.c
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+++ b/src/tfp410/tfp410.c
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+/* -*- c-basic-offset: 4 -*- */
+/*
+ * 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>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86Resources.h"
+#include "compiler.h"
+#include "miscstruct.h"
+#include "xf86i2c.h"
+#include "xf86Crtc.h"
+#define DPMS_SERVER
+#include <X11/extensions/dpms.h>
+
+#include "../i2c_vid.h"
+#include "tfp410.h"
+#include "tfp410_reg.h"
+
+static Bool
+tfp410ReadByte(TFP410Ptr tfp, int addr, CARD8 *ch)
+{
+ if (!xf86I2CReadByte(&(tfp->d), addr, ch)) {
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_ERROR,
+ "Unable to read from %s Slave %d.\n",
+ tfp->d.pI2CBus->BusName, tfp->d.SlaveAddr);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static Bool
+tfp410WriteByte(TFP410Ptr tfp, int addr, CARD8 ch)
+{
+ if (!xf86I2CWriteByte(&(tfp->d), addr, ch)) {
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_ERROR,
+ "Unable to write to %s Slave %d.\n",
+ tfp->d.pI2CBus->BusName, tfp->d.SlaveAddr);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static int
+tfp410GetID(TFP410Ptr tfp, int addr)
+{
+ unsigned char ch1, ch2;
+
+ if (tfp410ReadByte(tfp, addr+0, &ch1) &&
+ tfp410ReadByte(tfp, addr+1, &ch2)) {
+
+ return ((ch2<<8) & 0xFF00) | (ch1 & 0x00FF);
+ }
+ return -1;
+}
+
+/* Ti TFP410 driver for chip on i2c bus */
+static void *
+tfp410_init(I2CBusPtr b, I2CSlaveAddr addr)
+{
+ /* this will detect the tfp410 chip on the specified i2c bus */
+ TFP410Ptr tfp;
+ int id;
+
+ xf86DrvMsg(b->scrnIndex, X_INFO, "detecting tfp410\n");
+
+ tfp = xcalloc(1, sizeof(TFP410Rec));
+ if (tfp == NULL)
+ return NULL;
+
+ tfp->d.DevName = "TFP410 TMDS Controller";
+ tfp->d.SlaveAddr = addr;
+ tfp->d.pI2CBus = b;
+ tfp->d.StartTimeout = b->StartTimeout;
+ tfp->d.BitTimeout = b->BitTimeout;
+ tfp->d.AcknTimeout = b->AcknTimeout;
+ tfp->d.ByteTimeout = b->ByteTimeout;
+ tfp->d.DriverPrivate.ptr = tfp;
+
+ if ((id = tfp410GetID(tfp, TFP410_VID_LO)) != TFP410_VID) {
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_ERROR,
+ "tfp410 not detected got VID %X: from %s Slave %d.\n",
+ id, tfp->d.pI2CBus->BusName, tfp->d.SlaveAddr);
+ goto out;
+ }
+
+ if ((id = tfp410GetID(tfp, TFP410_DID_LO)) != TFP410_DID) {
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_ERROR,
+ "tfp410 not detected got DID %X: from %s Slave %d.\n",
+ id, tfp->d.pI2CBus->BusName, tfp->d.SlaveAddr);
+ goto out;
+ }
+
+ if (!xf86I2CDevInit(&(tfp->d))) {
+ goto out;
+ }
+
+ return tfp;
+
+out:
+ xfree(tfp);
+ return NULL;
+}
+
+static xf86OutputStatus
+tfp410_detect(I2CDevPtr d)
+{
+ TFP410Ptr tfp = TFPPTR(d);
+ xf86OutputStatus ret = XF86OutputStatusDisconnected;
+ unsigned char ctl2;
+
+ if (tfp410ReadByte(tfp, TFP410_CTL_2, &ctl2)) {
+ if (ctl2 & TFP410_CTL_2_HTPLG)
+ ret = XF86OutputStatusConnected;
+ else
+ ret = XF86OutputStatusDisconnected;
+ }
+
+ return ret;
+}
+
+static ModeStatus
+tfp410_mode_valid(I2CDevPtr d, DisplayModePtr mode)
+{
+ return MODE_OK;
+}
+
+static void
+tfp410_mode_set(I2CDevPtr d, DisplayModePtr mode, DisplayModePtr 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(I2CDevPtr d, int mode)
+{
+ TFP410Ptr tfp = TFPPTR(d);
+ unsigned char ctl1;
+
+ if (!tfp410ReadByte(tfp, TFP410_CTL_1, &ctl1))
+ return;
+
+ if (mode == DPMSModeOn)
+ ctl1 |= TFP410_CTL_1_PD;
+ else
+ ctl1 &= ~TFP410_CTL_1_PD;
+
+ tfp410WriteByte(tfp, TFP410_CTL_1, ctl1);
+}
+
+static void
+tfp410_dump_regs(I2CDevPtr d)
+{
+ TFP410Ptr tfp = TFPPTR(d);
+ CARD8 val, val2;
+
+ tfp410ReadByte(tfp, TFP410_REV, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_REV: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_CTL_1, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_CTL1: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_CTL_2, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_CTL2: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_CTL_3, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_CTL3: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_USERCFG, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_USERCFG: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_DE_DLY, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_DE_DLY: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_DE_CTL, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_DE_CTL: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_DE_TOP, &val);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_DE_TOP: 0x%02X\n", val);
+ tfp410ReadByte(tfp, TFP410_DE_CNT_LO, &val);
+ tfp410ReadByte(tfp, TFP410_DE_CNT_HI, &val2);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_DE_CNT: 0x%02X%02X\n", val2, val);
+ tfp410ReadByte(tfp, TFP410_DE_LIN_LO, &val);
+ tfp410ReadByte(tfp, TFP410_DE_LIN_HI, &val2);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_DE_LIN: 0x%02X%02X\n", val2, val);
+ tfp410ReadByte(tfp, TFP410_H_RES_LO, &val);
+ tfp410ReadByte(tfp, TFP410_H_RES_HI, &val2);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_H_RES: 0x%02X%02X\n", val2, val);
+ tfp410ReadByte(tfp, TFP410_V_RES_LO, &val);
+ tfp410ReadByte(tfp, TFP410_V_RES_HI, &val2);
+ xf86DrvMsg(tfp->d.pI2CBus->scrnIndex, X_INFO,
+ "TFP410_V_RES: 0x%02X%02X\n", val2, val);
+}
+
+static void
+tfp410_save(I2CDevPtr d)
+{
+ TFP410Ptr tfp = TFPPTR(d);
+
+ if (!tfp410ReadByte(tfp, TFP410_CTL_1, &tfp->SavedReg.ctl1))
+ return;
+
+ if (!tfp410ReadByte(tfp, TFP410_CTL_2, &tfp->SavedReg.ctl2))
+ return;
+}
+
+static void
+tfp410_restore(I2CDevPtr d)
+{
+ TFP410Ptr tfp = TFPPTR(d);
+
+ /* Restore it powered down initially */
+ tfp410WriteByte(tfp, TFP410_CTL_1, tfp->SavedReg.ctl1 & ~0x1);
+
+ tfp410WriteByte(tfp, TFP410_CTL_2, tfp->SavedReg.ctl2);
+ tfp410WriteByte(tfp, TFP410_CTL_1, tfp->SavedReg.ctl1);
+}
+
+I830I2CVidOutputRec TFP410VidOutput = {
+ .init = tfp410_init,
+ .detect = tfp410_detect,
+ .mode_valid = tfp410_mode_valid,
+ .mode_set = tfp410_mode_set,
+ .dpms = tfp410_dpms,
+ .dump_regs = tfp410_dump_regs,
+ .save = tfp410_save,
+ .restore = tfp410_restore,
+};
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