diff options
Diffstat (limited to 'linux/radeon_i2c.c')
-rw-r--r-- | linux/radeon_i2c.c | 157 |
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 |