summaryrefslogtreecommitdiff
path: root/linux/radeon_i2c.c
diff options
context:
space:
mode:
authorJon Smirl <jonsmirl@yahoo.com>2004-09-24 03:12:17 +0000
committerJon Smirl <jonsmirl@yahoo.com>2004-09-24 03:12:17 +0000
commit74f063fc9d445f263242063e7acab1864ff75205 (patch)
treeefa4cbd32db328d11e0c9777b48094f4e75bbed1 /linux/radeon_i2c.c
parent36a257cfe9e45e7a2022f19100a193eb73e30d4b (diff)
Create new linux-2.6 build. Move all gpl files into the 2.6 build. If you
edit files for 2.6 be sure and break the link to the 2.4 directory and copy the cvs history.
Diffstat (limited to 'linux/radeon_i2c.c')
-rw-r--r--linux/radeon_i2c.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/linux/radeon_i2c.c b/linux/radeon_i2c.c
deleted file mode 100644
index e2591723..00000000
--- a/linux/radeon_i2c.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * linux/radeon_i2c.c
- *
- * Original author probably Benjamin Herrenschmidt <benh@kernel.crashing.org>
- * or Kronos <kronos@kronoz.cjb.net>
- * Based on Xfree sources
- * (C) Copyright 2004 Jon Smirl <jonsmirl@gmail.com>
- *
- * This is a GPL licensed file from the Linux kernel, don't add it to the BSD build
- *
- * Radeon I2C support routines
- *
- */
-
-#include <linux/config.h>
-#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 <linux/version.h>
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-
-#include <asm/io.h>
-#include <video/radeon.h>
-
-#include "radeon.h"
-#include "drmP.h"
-#include "drm.h"
-#include "radeon_drm.h"
-#include "radeon_drv.h"
-
-static void gpio_setscl(void* data, int state)
-{
- struct radeon_i2c_chan *chan = data;
- drm_radeon_private_t *dev_priv = chan->dev->dev_private;
- u32 val;
-
- val = RADEON_READ(chan->ddc_reg) & ~(VGA_DDC_CLK_OUT_EN);
- if (!state)
- val |= VGA_DDC_CLK_OUT_EN;
-
- RADEON_WRITE(chan->ddc_reg, val);
- (void)RADEON_READ(chan->ddc_reg);
-}
-
-static void gpio_setsda(void* data, int state)
-{
- struct radeon_i2c_chan *chan = data;
- drm_radeon_private_t *dev_priv = chan->dev->dev_private;
- u32 val;
-
- val = RADEON_READ(chan->ddc_reg) & ~(VGA_DDC_DATA_OUT_EN);
- if (!state)
- val |= VGA_DDC_DATA_OUT_EN;
-
- RADEON_WRITE(chan->ddc_reg, val);
- (void)RADEON_READ(chan->ddc_reg);
-}
-
-static int gpio_getscl(void* data)
-{
- struct radeon_i2c_chan *chan = data;
- drm_radeon_private_t *dev_priv = chan->dev->dev_private;
- u32 val;
-
- val = RADEON_READ(chan->ddc_reg);
-
- return (val & VGA_DDC_CLK_INPUT) ? 1 : 0;
-}
-
-static int gpio_getsda(void* data)
-{
- struct radeon_i2c_chan *chan = data;
- drm_radeon_private_t *dev_priv = chan->dev->dev_private;
- u32 val;
-
- val = RADEON_READ(chan->ddc_reg);
-
- return (val & VGA_DDC_DATA_INPUT) ? 1 : 0;
-}
-
-static int setup_i2c_bus(struct radeon_i2c_chan *chan, const char *name)
-{
- int rc;
-
- strcpy(chan->adapter.name, name);
- chan->adapter.owner = THIS_MODULE;
- chan->adapter.id = I2C_ALGO_ATI;
- chan->adapter.algo_data = &chan->algo;
- chan->adapter.dev.parent = &chan->dev->pdev->dev;
- chan->algo.setsda = gpio_setsda;
- chan->algo.setscl = gpio_setscl;
- chan->algo.getsda = gpio_getsda;
- chan->algo.getscl = gpio_getscl;
- chan->algo.udelay = 40;
- chan->algo.timeout = 20;
- chan->algo.data = chan;
-
- i2c_set_adapdata(&chan->adapter, chan);
-
- /* Raise SCL and SDA */
- gpio_setsda(chan, 1);
- gpio_setscl(chan, 1);
- udelay(20);
-
- rc = i2c_bit_add_bus(&chan->adapter);
- if (rc == 0)
- DRM_DEBUG("I2C bus %s registered.\n", name);
- else
- DRM_ERROR("Failed to register I2C bus %s.\n", name);
- return rc;
-}
-
-int radeon_create_i2c_busses(drm_device_t *dev)
-{
- drm_radeon_private_t *dev_priv = dev->dev_private;
- int ret;
-
- dev_priv->i2c[0].dev = dev;
- dev_priv->i2c[0].ddc_reg = GPIO_MONID;
- if ((ret = setup_i2c_bus(&dev_priv->i2c[0], "monid")))
- return ret;
-
- dev_priv->i2c[1].dev = dev;
- dev_priv->i2c[1].ddc_reg = GPIO_DVI_DDC;
- if ((ret = setup_i2c_bus(&dev_priv->i2c[1], "dvi")))
- return ret;
-
- dev_priv->i2c[2].dev = dev;
- dev_priv->i2c[2].ddc_reg = GPIO_VGA_DDC;
- if ((ret = setup_i2c_bus(&dev_priv->i2c[2], "vga")))
- return ret;
-
- dev_priv->i2c[3].dev = dev;
- dev_priv->i2c[3].ddc_reg = GPIO_CRT2_DDC;
- if ((ret = setup_i2c_bus(&dev_priv->i2c[3], "crt2")))
- return ret;
- return 0;
-}
-
-void radeon_delete_i2c_busses(drm_device_t *dev)
-{
- drm_radeon_private_t *dev_priv = dev->dev_private;
- int i, ret;
-
- for (i = 0; i < 4; i++) {
- if (dev_priv->i2c[i].dev) {
- ret = i2c_bit_del_bus(&dev_priv->i2c[i].adapter);
- }
- dev_priv->i2c[i].dev = NULL;
- }
-}
-
-#endif