[PATCH RESEND 3/9] nvidiafb: Bring back generic ddc reading
DORMANTno replies
From: "Antonino A. Daplas" <adaplas@gmail.com>
Date: 2007-02-25 10:27:03
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
Make nvidiafb use fb_ddc_read(). This patch was submitted before but was reverted due to problems in a non-x86 platform. This includes a fix for that where ddc reading is bypassed if there is no DDC bus (duh). Signed-off-by: Antonino Daplas <adaplas@gmail.com> --- drivers/video/nvidia/nv_i2c.c | 44 ++--------------------------------------- 1 files changed, 2 insertions(+), 42 deletions(-)
diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c
index b858897..b91d404 100644
--- a/drivers/video/nvidia/nv_i2c.c
+++ b/drivers/video/nvidia/nv_i2c.c@@ -70,8 +70,6 @@ static int nvidia_gpio_getscl(void *data if (VGA_RD08(par->PCIO, 0x3d5) & 0x04) val = 1; - val = VGA_RD08(par->PCIO, 0x3d5); - return val; }
@@ -159,51 +157,13 @@ void nvidia_delete_i2c_busses(struct nvi } -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 (par->chan[conn - 1].par) + edid = fb_ddc_read(&par->chan[conn - 1].adapter); if (!edid && conn == 1) { /* try to get from firmware */ -------------------------------------------------------------------------
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