diff options
Diffstat (limited to 'drivers/video/fbdev/intelfb/intelfb_i2c.c')
| -rw-r--r-- | drivers/video/fbdev/intelfb/intelfb_i2c.c | 209 |
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; - } - } -} |