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path: root/drivers/video/aty/radeon_i2c.c
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Diffstat (limited to 'drivers/video/aty/radeon_i2c.c')
-rw-r--r--drivers/video/aty/radeon_i2c.c265
1 files changed, 0 insertions, 265 deletions
diff --git a/drivers/video/aty/radeon_i2c.c b/drivers/video/aty/radeon_i2c.c
deleted file mode 100644
index 762244164c8..00000000000
--- a/drivers/video/aty/radeon_i2c.c
+++ /dev/null
@@ -1,265 +0,0 @@
-#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/i2c.h>
-#include <linux/i2c-id.h>
-#include <linux/i2c-algo-bit.h>
-
-#include <asm/io.h>
-
-#include <video/radeon.h>
-#include "radeonfb.h"
-#include "../edid.h"
-
-#define RADEON_DDC 0x50
-
-static void radeon_gpio_setscl(void* data, int state)
-{
- struct radeon_i2c_chan *chan = data;
- struct radeonfb_info *rinfo = chan->rinfo;
- u32 val;
-
- val = INREG(chan->ddc_reg) & ~(VGA_DDC_CLK_OUT_EN);
- if (!state)
- val |= VGA_DDC_CLK_OUT_EN;
-
- OUTREG(chan->ddc_reg, val);
- (void)INREG(chan->ddc_reg);
-}
-
-static void radeon_gpio_setsda(void* data, int state)
-{
- struct radeon_i2c_chan *chan = data;
- struct radeonfb_info *rinfo = chan->rinfo;
- u32 val;
-
- val = INREG(chan->ddc_reg) & ~(VGA_DDC_DATA_OUT_EN);
- if (!state)
- val |= VGA_DDC_DATA_OUT_EN;
-
- OUTREG(chan->ddc_reg, val);
- (void)INREG(chan->ddc_reg);
-}
-
-static int radeon_gpio_getscl(void* data)
-{
- struct radeon_i2c_chan *chan = data;
- struct radeonfb_info *rinfo = chan->rinfo;
- u32 val;
-
- val = INREG(chan->ddc_reg);
-
- return (val & VGA_DDC_CLK_INPUT) ? 1 : 0;
-}
-
-static int radeon_gpio_getsda(void* data)
-{
- struct radeon_i2c_chan *chan = data;
- struct radeonfb_info *rinfo = chan->rinfo;
- u32 val;
-
- val = INREG(chan->ddc_reg);
-
- return (val & VGA_DDC_DATA_INPUT) ? 1 : 0;
-}
-
-static int radeon_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->rinfo->pdev->dev;
- chan->algo.setsda = radeon_gpio_setsda;
- chan->algo.setscl = radeon_gpio_setscl;
- chan->algo.getsda = radeon_gpio_getsda;
- chan->algo.getscl = radeon_gpio_getscl;
- chan->algo.udelay = 40;
- chan->algo.timeout = 20;
- chan->algo.data = chan;
-
- i2c_set_adapdata(&chan->adapter, chan);
-
- /* Raise SCL and SDA */
- radeon_gpio_setsda(chan, 1);
- radeon_gpio_setscl(chan, 1);
- udelay(20);
-
- rc = i2c_bit_add_bus(&chan->adapter);
- if (rc == 0)
- dev_dbg(&chan->rinfo->pdev->dev, "I2C bus %s registered.\n", name);
- else
- dev_warn(&chan->rinfo->pdev->dev, "Failed to register I2C bus %s.\n", name);
- return rc;
-}
-
-void radeon_create_i2c_busses(struct radeonfb_info *rinfo)
-{
- rinfo->i2c[0].rinfo = rinfo;
- rinfo->i2c[0].ddc_reg = GPIO_MONID;
- radeon_setup_i2c_bus(&rinfo->i2c[0], "monid");
-
- rinfo->i2c[1].rinfo = rinfo;
- rinfo->i2c[1].ddc_reg = GPIO_DVI_DDC;
- radeon_setup_i2c_bus(&rinfo->i2c[1], "dvi");
-
- rinfo->i2c[2].rinfo = rinfo;
- rinfo->i2c[2].ddc_reg = GPIO_VGA_DDC;
- radeon_setup_i2c_bus(&rinfo->i2c[2], "vga");
-
- rinfo->i2c[3].rinfo = rinfo;
- rinfo->i2c[3].ddc_reg = GPIO_CRT2_DDC;
- radeon_setup_i2c_bus(&rinfo->i2c[3], "crt2");
-}
-
-void radeon_delete_i2c_busses(struct radeonfb_info *rinfo)
-{
- if (rinfo->i2c[0].rinfo)
- i2c_bit_del_bus(&rinfo->i2c[0].adapter);
- rinfo->i2c[0].rinfo = NULL;
-
- if (rinfo->i2c[1].rinfo)
- i2c_bit_del_bus(&rinfo->i2c[1].adapter);
- rinfo->i2c[1].rinfo = NULL;
-
- if (rinfo->i2c[2].rinfo)
- i2c_bit_del_bus(&rinfo->i2c[2].adapter);
- rinfo->i2c[2].rinfo = NULL;
-
- if (rinfo->i2c[3].rinfo)
- i2c_bit_del_bus(&rinfo->i2c[3].adapter);
- rinfo->i2c[3].rinfo = NULL;
-}
-
-
-static u8 *radeon_do_probe_i2c_edid(struct radeon_i2c_chan *chan)
-{
- u8 start = 0x0;
- struct i2c_msg msgs[] = {
- {
- .addr = RADEON_DDC,
- .len = 1,
- .buf = &start,
- }, {
- .addr = RADEON_DDC,
- .flags = I2C_M_RD,
- .len = EDID_LENGTH,
- },
- };
- u8 *buf;
-
- buf = kmalloc(EDID_LENGTH, GFP_KERNEL);
- if (!buf) {
- dev_warn(&chan->rinfo->pdev->dev, "Out of memory!\n");
- return NULL;
- }
- msgs[1].buf = buf;
-
- if (i2c_transfer(&chan->adapter, msgs, 2) == 2)
- return buf;
- dev_dbg(&chan->rinfo->pdev->dev, "Unable to read EDID block.\n");
- kfree(buf);
- return NULL;
-}
-
-
-int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn, u8 **out_edid)
-{
- u32 reg = rinfo->i2c[conn-1].ddc_reg;
- u8 *edid = NULL;
- int i, j;
-
- OUTREG(reg, INREG(reg) &
- ~(VGA_DDC_DATA_OUTPUT | VGA_DDC_CLK_OUTPUT));
-
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN));
- (void)INREG(reg);
-
- for (i = 0; i < 3; i++) {
- /* For some old monitors we need the
- * following process to initialize/stop DDC
- */
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_DATA_OUT_EN));
- (void)INREG(reg);
- msleep(13);
-
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN));
- (void)INREG(reg);
- for (j = 0; j < 5; j++) {
- msleep(10);
- if (INREG(reg) & VGA_DDC_CLK_INPUT)
- break;
- }
- if (j == 5)
- continue;
-
- OUTREG(reg, INREG(reg) | VGA_DDC_DATA_OUT_EN);
- (void)INREG(reg);
- msleep(15);
- OUTREG(reg, INREG(reg) | VGA_DDC_CLK_OUT_EN);
- (void)INREG(reg);
- msleep(15);
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_DATA_OUT_EN));
- (void)INREG(reg);
- msleep(15);
-
- /* Do the real work */
- edid = radeon_do_probe_i2c_edid(&rinfo->i2c[conn-1]);
-
- OUTREG(reg, INREG(reg) |
- (VGA_DDC_DATA_OUT_EN | VGA_DDC_CLK_OUT_EN));
- (void)INREG(reg);
- msleep(15);
-
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN));
- (void)INREG(reg);
- for (j = 0; j < 10; j++) {
- msleep(10);
- if (INREG(reg) & VGA_DDC_CLK_INPUT)
- break;
- }
-
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_DATA_OUT_EN));
- (void)INREG(reg);
- msleep(15);
- OUTREG(reg, INREG(reg) |
- (VGA_DDC_DATA_OUT_EN | VGA_DDC_CLK_OUT_EN));
- (void)INREG(reg);
- if (edid)
- break;
- }
- /* Release the DDC lines when done or the Apple Cinema HD display
- * will switch off
- */
- OUTREG(reg, INREG(reg) & ~(VGA_DDC_CLK_OUT_EN | VGA_DDC_DATA_OUT_EN));
- (void)INREG(reg);
-
- if (out_edid)
- *out_edid = edid;
- if (!edid) {
- RTRACE("radeonfb: I2C (port %d) ... not found\n", conn);
- return MT_NONE;
- }
- if (edid[0x14] & 0x80) {
- /* Fix detection using BIOS tables */
- if (rinfo->is_mobility /*&& conn == ddc_dvi*/ &&
- (INREG(LVDS_GEN_CNTL) & LVDS_ON)) {
- RTRACE("radeonfb: I2C (port %d) ... found LVDS panel\n", conn);
- return MT_LCD;
- } else {
- RTRACE("radeonfb: I2C (port %d) ... found TMDS panel\n", conn);
- return MT_DFP;
- }
- }
- RTRACE("radeonfb: I2C (port %d) ... found CRT display\n", conn);
- return MT_CRT;
-}
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 05:57:50 +0000