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path: root/drivers/video/fbdev/intelfb/intelfb_i2c.c
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Diffstat (limited to 'drivers/video/fbdev/intelfb/intelfb_i2c.c')
-rw-r--r--drivers/video/fbdev/intelfb/intelfb_i2c.c209
1 files changed, 0 insertions, 209 deletions
diff --git a/drivers/video/fbdev/intelfb/intelfb_i2c.c b/drivers/video/fbdev/intelfb/intelfb_i2c.c
deleted file mode 100644
index 3300bd31d9d7..000000000000
--- a/drivers/video/fbdev/intelfb/intelfb_i2c.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/**************************************************************************
-
- Copyright 2006 Dave Airlie <airlied@linux.ie>
-
-All Rights Reserved.
-
-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
-on the rights to use, copy, modify, merge, publish, distribute, sub
-license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
-THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS 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.
-
-**************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/fb.h>
-
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-#include <asm/io.h>
-
-#include "intelfb.h"
-#include "intelfbhw.h"
-
-/* bit locations in the registers */
-#define SCL_DIR_MASK 0x0001
-#define SCL_DIR 0x0002
-#define SCL_VAL_MASK 0x0004
-#define SCL_VAL_OUT 0x0008
-#define SCL_VAL_IN 0x0010
-#define SDA_DIR_MASK 0x0100
-#define SDA_DIR 0x0200
-#define SDA_VAL_MASK 0x0400
-#define SDA_VAL_OUT 0x0800
-#define SDA_VAL_IN 0x1000
-
-static void intelfb_gpio_setscl(void *data, int state)
-{
- struct intelfb_i2c_chan *chan = data;
- struct intelfb_info *dinfo = chan->dinfo;
- u32 val;
-
- OUTREG(chan->reg, (state ? SCL_VAL_OUT : 0) |
- SCL_DIR | SCL_DIR_MASK | SCL_VAL_MASK);
- val = INREG(chan->reg);
-}
-
-static void intelfb_gpio_setsda(void *data, int state)
-{
- struct intelfb_i2c_chan *chan = data;
- struct intelfb_info *dinfo = chan->dinfo;
- u32 val;
-
- OUTREG(chan->reg, (state ? SDA_VAL_OUT : 0) |
- SDA_DIR | SDA_DIR_MASK | SDA_VAL_MASK);
- val = INREG(chan->reg);
-}
-
-static int intelfb_gpio_getscl(void *data)
-{
- struct intelfb_i2c_chan *chan = data;
- struct intelfb_info *dinfo = chan->dinfo;
- u32 val;
-
- OUTREG(chan->reg, SCL_DIR_MASK);
- OUTREG(chan->reg, 0);
- val = INREG(chan->reg);
- return ((val & SCL_VAL_IN) != 0);
-}
-
-static int intelfb_gpio_getsda(void *data)
-{
- struct intelfb_i2c_chan *chan = data;
- struct intelfb_info *dinfo = chan->dinfo;
- u32 val;
-
- OUTREG(chan->reg, SDA_DIR_MASK);
- OUTREG(chan->reg, 0);
- val = INREG(chan->reg);
- return ((val & SDA_VAL_IN) != 0);
-}
-
-static int intelfb_setup_i2c_bus(struct intelfb_info *dinfo,
- struct intelfb_i2c_chan *chan,
- const u32 reg, const char *name,
- int class)
-{
- int rc;
-
- chan->dinfo = dinfo;
- chan->reg = reg;
- snprintf(chan->adapter.name, sizeof(chan->adapter.name),
- "intelfb %s", name);
- chan->adapter.class = class;
- chan->adapter.owner = THIS_MODULE;
- chan->adapter.algo_data = &chan->algo;
- chan->adapter.dev.parent = &chan->dinfo->pdev->dev;
- chan->algo.setsda = intelfb_gpio_setsda;
- chan->algo.setscl = intelfb_gpio_setscl;
- chan->algo.getsda = intelfb_gpio_getsda;
- chan->algo.getscl = intelfb_gpio_getscl;
- chan->algo.udelay = 40;
- chan->algo.timeout = 20;
- chan->algo.data = chan;
-
- i2c_set_adapdata(&chan->adapter, chan);
-
- /* Raise SCL and SDA */
- intelfb_gpio_setsda(chan, 1);
- intelfb_gpio_setscl(chan, 1);
- udelay(20);
-
- rc = i2c_bit_add_bus(&chan->adapter);
- if (rc == 0)
- DBG_MSG("I2C bus %s registered.\n", name);
- else
- WRN_MSG("Failed to register I2C bus %s.\n", name);
- return rc;
-}
-
-void intelfb_create_i2c_busses(struct intelfb_info *dinfo)
-{
- int i = 0;
-
- /* everyone has at least a single analog output */
- dinfo->num_outputs = 1;
- dinfo->output[i].type = INTELFB_OUTPUT_ANALOG;
-
- /* setup the DDC bus for analog output */
- intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].ddc_bus, GPIOA,
- "CRTDDC_A", I2C_CLASS_DDC);
- i++;
-
- /* need to add the output busses for each device
- - this function is very incomplete
- - i915GM has LVDS and TVOUT for example
- */
- switch(dinfo->chipset) {
- case INTEL_830M:
- case INTEL_845G:
- case INTEL_854:
- case INTEL_855GM:
- case INTEL_865G:
- dinfo->output[i].type = INTELFB_OUTPUT_DVO;
- intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].ddc_bus,
- GPIOD, "DVODDC_D", I2C_CLASS_DDC);
- intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].i2c_bus,
- GPIOE, "DVOI2C_E", 0);
- i++;
- break;
- case INTEL_915G:
- case INTEL_915GM:
- /* has some LVDS + tv-out */
- case INTEL_945G:
- case INTEL_945GM:
- case INTEL_945GME:
- case INTEL_965G:
- case INTEL_965GM:
- /* SDVO ports have a single control bus - 2 devices */
- dinfo->output[i].type = INTELFB_OUTPUT_SDVO;
- intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].i2c_bus,
- GPIOE, "SDVOCTRL_E", 0);
- /* TODO: initialize the SDVO */
- /* I830SDVOInit(pScrn, i, DVOB); */
- i++;
-
- /* set up SDVOC */
- dinfo->output[i].type = INTELFB_OUTPUT_SDVO;
- dinfo->output[i].i2c_bus = dinfo->output[i - 1].i2c_bus;
- /* TODO: initialize the SDVO */
- /* I830SDVOInit(pScrn, i, DVOC); */
- i++;
- break;
- }
- dinfo->num_outputs = i;
-}
-
-void intelfb_delete_i2c_busses(struct intelfb_info *dinfo)
-{
- int i;
-
- for (i = 0; i < MAX_OUTPUTS; i++) {
- if (dinfo->output[i].i2c_bus.dinfo) {
- i2c_del_adapter(&dinfo->output[i].i2c_bus.adapter);
- dinfo->output[i].i2c_bus.dinfo = NULL;
- }
- if (dinfo->output[i].ddc_bus.dinfo) {
- i2c_del_adapter(&dinfo->output[i].ddc_bus.adapter);
- dinfo->output[i].ddc_bus.dinfo = NULL;
- }
- }
-}
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