diff options
Diffstat (limited to 'drivers/video/nvidia/nv_i2c.c')
| -rw-r--r-- | drivers/video/nvidia/nv_i2c.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c deleted file mode 100644 index 19eef3a0902..00000000000 --- a/drivers/video/nvidia/nv_i2c.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * linux/drivers/video/nvidia/nvidia-i2c.c - nVidia i2c - * - * Copyright 2004 Antonino A. Daplas <adaplas @pol.net> - * - * Based on rivafb-i2c.c - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/pci.h> -#include <linux/fb.h> - -#include <asm/io.h> - -#include "nv_type.h" -#include "nv_local.h" -#include "nv_proto.h" - -#include "../edid.h" - -static void nvidia_gpio_setscl(void *data, int state) -{ - struct nvidia_i2c_chan *chan = data; - struct nvidia_par *par = chan->par; - u32 val; - - VGA_WR08(par->PCIO, 0x3d4, chan->ddc_base + 1); - val = VGA_RD08(par->PCIO, 0x3d5) & 0xf0; - - if (state) - val |= 0x20; - else - val &= ~0x20; - - VGA_WR08(par->PCIO, 0x3d4, chan->ddc_base + 1); - VGA_WR08(par->PCIO, 0x3d5, val | 0x1); -} - -static void nvidia_gpio_setsda(void *data, int state) -{ - struct nvidia_i2c_chan *chan = data; - struct nvidia_par *par = chan->par; - u32 val; - - VGA_WR08(par->PCIO, 0x3d4, chan->ddc_base + 1); - val = VGA_RD08(par->PCIO, 0x3d5) & 0xf0; - - if (state) - val |= 0x10; - else - val &= ~0x10; - - VGA_WR08(par->PCIO, 0x3d4, chan->ddc_base + 1); - VGA_WR08(par->PCIO, 0x3d5, val | 0x1); -} - -static int nvidia_gpio_getscl(void *data) -{ - struct nvidia_i2c_chan *chan = data; - struct nvidia_par *par = chan->par; - u32 val = 0; - - VGA_WR08(par->PCIO, 0x3d4, chan->ddc_base); - if (VGA_RD08(par->PCIO, 0x3d5) & 0x04) - val = 1; - - val = VGA_RD08(par->PCIO, 0x3d5); - - return val; -} - -static int nvidia_gpio_getsda(void *data) -{ - struct nvidia_i2c_chan *chan = data; - struct nvidia_par *par = chan->par; - u32 val = 0; - - VGA_WR08(par->PCIO, 0x3d4, chan->ddc_base); - if (VGA_RD08(par->PCIO, 0x3d5) & 0x08) - val = 1; - - return val; -} - -static int nvidia_setup_i2c_bus(struct nvidia_i2c_chan *chan, const char *name) -{ - int rc; - - strcpy(chan->adapter.name, name); - chan->adapter.owner = THIS_MODULE; - chan->adapter.id = I2C_HW_B_NVIDIA; - chan->adapter.algo_data = &chan->algo; - chan->adapter.dev.parent = &chan->par->pci_dev->dev; - chan->algo.setsda = nvidia_gpio_setsda; - chan->algo.setscl = nvidia_gpio_setscl; - chan->algo.getsda = nvidia_gpio_getsda; - chan->algo.getscl = nvidia_gpio_getscl; - chan->algo.udelay = 40; - chan->algo.timeout = msecs_to_jiffies(2); - chan->algo.data = chan; - - i2c_set_adapdata(&chan->adapter, chan); - - /* Raise SCL and SDA */ - nvidia_gpio_setsda(chan, 1); - nvidia_gpio_setscl(chan, 1); - udelay(20); - - rc = i2c_bit_add_bus(&chan->adapter); - if (rc == 0) - dev_dbg(&chan->par->pci_dev->dev, - "I2C bus %s registered.\n", name); - else { - dev_warn(&chan->par->pci_dev->dev, - "Failed to register I2C bus %s.\n", name); - chan->par = NULL; - } - - return rc; -} - -void nvidia_create_i2c_busses(struct nvidia_par *par) -{ - par->bus = 3; - - par->chan[0].par = par; - par->chan[1].par = par; - par->chan[2].par = par; - - par->chan[0].ddc_base = 0x3e; - nvidia_setup_i2c_bus(&par->chan[0], "nvidia #0"); - - par->chan[1].ddc_base = 0x36; - nvidia_setup_i2c_bus(&par->chan[1], "nvidia #1"); - - par->chan[2].ddc_base = 0x50; - nvidia_setup_i2c_bus(&par->chan[2], "nvidia #2"); -} - -void nvidia_delete_i2c_busses(struct nvidia_par *par) -{ - if (par->chan[0].par) - i2c_bit_del_bus(&par->chan[0].adapter); - par->chan[0].par = NULL; - - if (par->chan[1].par) - i2c_bit_del_bus(&par->chan[1].adapter); - par->chan[1].par = NULL; - - if (par->chan[2].par) - i2c_bit_del_bus(&par->chan[2].adapter); - par->chan[2].par = NULL; - -} - -static u8 *nvidia_do_probe_i2c_edid(struct nvidia_i2c_chan *chan) -{ - u8 start = 0x0; - struct i2c_msg msgs[] = { - { - .addr = 0x50, - .len = 1, - .buf = &start, - }, { - .addr = 0x50, - .flags = I2C_M_RD, - .len = EDID_LENGTH, - }, - }; - u8 *buf; - - if (!chan->par) - return NULL; - - buf = kmalloc(EDID_LENGTH, GFP_KERNEL); - if (!buf) { - dev_warn(&chan->par->pci_dev->dev, "Out of memory!\n"); - return NULL; - } - msgs[1].buf = buf; - - if (i2c_transfer(&chan->adapter, msgs, 2) == 2) - return buf; - dev_dbg(&chan->par->pci_dev->dev, "Unable to read EDID block.\n"); - kfree(buf); - return NULL; -} - -int nvidia_probe_i2c_connector(struct fb_info *info, int conn, u8 **out_edid) -{ - struct nvidia_par *par = info->par; - u8 *edid = NULL; - int i; - - for (i = 0; i < 3; i++) { - /* Do the real work */ - edid = nvidia_do_probe_i2c_edid(&par->chan[conn - 1]); - if (edid) - break; - } - - if (!edid && conn == 1) { - /* try to get from firmware */ - const u8 *e = fb_firmware_edid(info->device); - - if (e != NULL) { - edid = kmalloc(EDID_LENGTH, GFP_KERNEL); - if (edid) - memcpy(edid, e, EDID_LENGTH); - } - } - - *out_edid = edid; - - return (edid) ? 0 : 1; -} |