diff options
| -rw-r--r-- | Documentation/fb/intelfb.txt | 11 | ||||
| -rw-r--r-- | drivers/video/Kconfig | 26 | ||||
| -rw-r--r-- | drivers/video/intelfb/Makefile | 4 | ||||
| -rw-r--r-- | drivers/video/intelfb/intelfb.h | 79 | ||||
| -rw-r--r-- | drivers/video/intelfb/intelfb_i2c.c | 200 | ||||
| -rw-r--r-- | drivers/video/intelfb/intelfbdrv.c | 64 | ||||
| -rw-r--r-- | drivers/video/intelfb/intelfbhw.c | 136 | ||||
| -rw-r--r-- | drivers/video/intelfb/intelfbhw.h | 25 | ||||
| -rw-r--r-- | include/linux/i2c-id.h | 1 |
9 files changed, 535 insertions, 11 deletions
diff --git a/Documentation/fb/intelfb.txt b/Documentation/fb/intelfb.txt index c12d39a23c3..aa0d322db17 100644 --- a/Documentation/fb/intelfb.txt +++ b/Documentation/fb/intelfb.txt @@ -1,16 +1,19 @@ -Intel 830M/845G/852GM/855GM/865G/915G Framebuffer driver +Intel 830M/845G/852GM/855GM/865G/915G/945G Framebuffer driver ================================================================ A. Introduction - This is a framebuffer driver for various Intel 810/815 compatible + This is a framebuffer driver for various Intel 8xx/9xx compatible graphics devices. These would include: Intel 830M - Intel 810E845G + Intel 845G Intel 852GM Intel 855GM Intel 865G Intel 915G + Intel 915GM + Intel 945G + Intel 945GM B. List of available options @@ -78,7 +81,7 @@ C. Kernel booting Separate each option/option-pair by commas (,) and the option from its value with an equals sign (=) as in the following: -video=i810fb:option1,option2=value2 +video=intelfb:option1,option2=value2 Sample Usage ------------ diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 702eb933cf8..e0ef3328942 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -825,30 +825,48 @@ config FB_I810_I2C help config FB_INTEL - tristate "Intel 830M/845G/852GM/855GM/865G support (EXPERIMENTAL)" + tristate "Intel 830M/845G/852GM/855GM/865G/915G/945G support (EXPERIMENTAL)" depends on FB && EXPERIMENTAL && PCI && X86 select AGP select AGP_INTEL + select I2C_ALGOBIT if FB_INTEL_I2C + select I2C if FB_INTEL_I2C select FB_MODE_HELPERS select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT help This driver supports the on-board graphics built in to the Intel - 830M/845G/852GM/855GM/865G chipsets. + 830M/845G/852GM/855GM/865G/915G/915GM/945G/945GM chipsets. Say Y if you have and plan to use such a board. - To compile this driver as a module, choose M here: the + If you say Y here and want DDC/I2C support you must first say Y to + "I2C support" and "I2C bit-banging support" in the character devices + section. + + If you say M here then "I2C support" and "I2C bit-banging support" + can be build either as modules or built-in. + + To compile this driver as a module, choose M here: the module will be called intelfb. + For more information, please read <file:Documentation/fb/intelfb.txt> + config FB_INTEL_DEBUG - bool "Intel driver Debug Messages" + bool "Intel driver Debug Messages" depends on FB_INTEL ---help--- Say Y here if you want the Intel driver to output all sorts of debugging informations to provide to the maintainer when something goes wrong. +config FB_INTEL_I2C + bool "DDC/I2C for Intel framebuffer support" + depends on FB_INTEL + default y + help + Say Y here if you want DDC/I2C support for your on-board Intel graphics. + config FB_MATROX tristate "Matrox acceleration" depends on FB && PCI diff --git a/drivers/video/intelfb/Makefile b/drivers/video/intelfb/Makefile index 722d21d6e5c..6c782d3ae1b 100644 --- a/drivers/video/intelfb/Makefile +++ b/drivers/video/intelfb/Makefile @@ -1,6 +1,8 @@ obj-$(CONFIG_FB_INTEL) += intelfb.o -intelfb-objs := intelfbdrv.o intelfbhw.o +intelfb-y := intelfbdrv.o intelfbhw.o +intelfb-$(CONFIG_FB_INTEL_I2C) += intelfb_i2c.o +intelfb-objs := $(intelfb-y) ifdef CONFIG_FB_INTEL_DEBUG #EXTRA_CFLAGS += -DDEBUG -DVERBOSE -DREGDUMP diff --git a/drivers/video/intelfb/intelfb.h b/drivers/video/intelfb/intelfb.h index e290d7460e1..80b94c19a9f 100644 --- a/drivers/video/intelfb/intelfb.h +++ b/drivers/video/intelfb/intelfb.h @@ -6,6 +6,10 @@ #include <linux/agp_backend.h> #include <linux/fb.h> +#ifdef CONFIG_FB_INTEL_I2C +#include <linux/i2c.h> +#include <linux/i2c-algo-bit.h> +#endif /*** Version/name ***/ #define INTELFB_VERSION "0.9.4" @@ -115,6 +119,29 @@ /* Intel agpgart driver */ #define AGP_PHYSICAL_MEMORY 2 +/* store information about an Ixxx DVO */ +/* The i830->i865 use multiple DVOs with multiple i2cs */ +/* the i915, i945 have a single sDVO i2c bus - which is different */ +#define MAX_OUTPUTS 6 + +/* these are outputs from the chip - integrated only + external chips are via DVO or SDVO output */ +#define INTELFB_OUTPUT_UNUSED 0 +#define INTELFB_OUTPUT_ANALOG 1 +#define INTELFB_OUTPUT_DVO 2 +#define INTELFB_OUTPUT_SDVO 3 +#define INTELFB_OUTPUT_LVDS 4 +#define INTELFB_OUTPUT_TVOUT 5 + +#define INTELFB_DVO_CHIP_NONE 0 +#define INTELFB_DVO_CHIP_LVDS 1 +#define INTELFB_DVO_CHIP_TMDS 2 +#define INTELFB_DVO_CHIP_TVOUT 4 + +#define INTELFB_OUTPUT_PIPE_NC 0 +#define INTELFB_OUTPUT_PIPE_A 1 +#define INTELFB_OUTPUT_PIPE_B 2 + /*** Data Types ***/ /* supported chipsets */ @@ -195,6 +222,10 @@ struct intelfb_hwstate { u32 mem_mode; u32 fw_blc_0; u32 fw_blc_1; + u16 hwstam; + u16 ier; + u16 iir; + u16 imr; }; struct intelfb_heap_data { @@ -204,6 +235,33 @@ struct intelfb_heap_data { u32 size; // in bytes }; +#ifdef CONFIG_FB_INTEL_I2C +struct intelfb_i2c_chan { + struct intelfb_info *dinfo; + u32 reg; + struct i2c_adapter adapter; + struct i2c_algo_bit_data algo; +}; +#endif + +struct intelfb_output_rec { + int type; + int pipe; + int flags; + +#ifdef CONFIG_FB_INTEL_I2C + struct intelfb_i2c_chan i2c_bus; + struct intelfb_i2c_chan ddc_bus; +#endif +}; + +struct intelfb_vsync { + wait_queue_head_t wait; + unsigned int count; + int pan_display; + u32 pan_offset; +}; + struct intelfb_info { struct fb_info *info; struct fb_ops *fbops; @@ -220,7 +278,7 @@ struct intelfb_info { u8 fbmem_gart; /* mtrr support */ - u32 mtrr_reg; + int mtrr_reg; u32 has_mtrr; /* heap data */ @@ -267,6 +325,12 @@ struct intelfb_info { int fixed_mode; int ring_active; int flag; + unsigned long irq_flags; + int open; + + /* vsync */ + struct intelfb_vsync vsync; + spinlock_t int_lock; /* hw cursor */ int cursor_on; @@ -285,12 +349,25 @@ struct intelfb_info { /* index into plls */ int pll_index; + + /* outputs */ + int num_outputs; + struct intelfb_output_rec output[MAX_OUTPUTS]; }; #define IS_I9XX(dinfo) (((dinfo)->chipset == INTEL_915G)||(dinfo->chipset == INTEL_915GM)||((dinfo)->chipset == INTEL_945G)||(dinfo->chipset==INTEL_945GM)) +#ifndef FBIO_WAITFORVSYNC +#define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32) +#endif + /*** function prototypes ***/ extern int intelfb_var_to_depth(const struct fb_var_screeninfo *var); +#ifdef CONFIG_FB_INTEL_I2C +extern void intelfb_create_i2c_busses(struct intelfb_info *dinfo); +extern void intelfb_delete_i2c_busses(struct intelfb_info *dinfo); +#endif + #endif /* _INTELFB_H */ diff --git a/drivers/video/intelfb/intelfb_i2c.c b/drivers/video/intelfb/intelfb_i2c.c new file mode 100644 index 00000000000..c1113d6e941 --- /dev/null +++ b/drivers/video/intelfb/intelfb_i2c.c @@ -0,0 +1,200 @@ +/************************************************************************** + + Copyright 2006 Dave Airlie <airlied@linux.ie> + +All Rights Reserved. + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the "Software"), +to deal in the Software without restriction, including without limitation +on the rights to use, copy, modify, merge, publish, distribute, sub +license, and/or sell copies of the Software, and to permit persons to whom +the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice (including the next +paragraph) shall be included in all copies or substantial portions of the +Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL +THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, +DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +USE OR OTHER DEALINGS IN THE SOFTWARE. + +**************************************************************************/ + +#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 "intelfb.h" +#include "intelfbhw.h" + +/* bit locations in the registers */ +#define SCL_DIR_MASK 0x0001 +#define SCL_DIR 0x0002 +#define SCL_VAL_MASK 0x0004 +#define SCL_VAL_OUT 0x0008 +#define SCL_VAL_IN 0x0010 +#define SDA_DIR_MASK 0x0100 +#define SDA_DIR 0x0200 +#define SDA_VAL_MASK 0x0400 +#define SDA_VAL_OUT 0x0800 +#define SDA_VAL_IN 0x1000 + +static void intelfb_gpio_setscl(void *data, int state) +{ + struct intelfb_i2c_chan *chan = data; + struct intelfb_info *dinfo = chan->dinfo; + u32 val; + + OUTREG(chan->reg, (state ? SCL_VAL_OUT : 0) | SCL_DIR | SCL_DIR_MASK | SCL_VAL_MASK); + val = INREG(chan->reg); +} + +static void intelfb_gpio_setsda(void *data, int state) +{ + struct intelfb_i2c_chan *chan = data; + struct intelfb_info *dinfo = chan->dinfo; + u32 val; + + OUTREG(chan->reg, (state ? SDA_VAL_OUT : 0) | SDA_DIR | SDA_DIR_MASK | SDA_VAL_MASK); + val = INREG(chan->reg); +} + +static int intelfb_gpio_getscl(void *data) +{ + struct intelfb_i2c_chan *chan = data; + struct intelfb_info *dinfo = chan->dinfo; + u32 val; + + OUTREG(chan->reg, SCL_DIR_MASK); + OUTREG(chan->reg, 0); + val = INREG(chan->reg); + return ((val & SCL_VAL_IN) != 0); +} + +static int intelfb_gpio_getsda(void *data) +{ + struct intelfb_i2c_chan *chan = data; + struct intelfb_info *dinfo = chan->dinfo; + u32 val; + + OUTREG(chan->reg, SDA_DIR_MASK); + OUTREG(chan->reg, 0); + val = INREG(chan->reg); + return ((val & SDA_VAL_IN) != 0); +} + +static int intelfb_setup_i2c_bus(struct intelfb_info *dinfo, + struct intelfb_i2c_chan *chan, + const u32 reg, const char *name) +{ + int rc; + + chan->dinfo = dinfo; + chan->reg = reg; + snprintf(chan->adapter.name, I2C_NAME_SIZE, "intelfb %s", name); + chan->adapter.owner = THIS_MODULE; + chan->adapter.id = I2C_HW_B_INTELFB; + chan->adapter.algo_data = &chan->algo; + chan->adapter.dev.parent = &chan->dinfo->pdev->dev; + chan->algo.setsda = intelfb_gpio_setsda; + chan->algo.setscl = intelfb_gpio_setscl; + chan->algo.getsda = intelfb_gpio_getsda; + chan->algo.getscl = intelfb_gpio_getscl; + chan->algo.udelay = 40; + chan->algo.timeout = 20; + chan->algo.data = chan; + + i2c_set_adapdata(&chan->adapter, chan); + + /* Raise SCL and SDA */ + intelfb_gpio_setsda(chan, 1); + intelfb_gpio_setscl(chan, 1); + udelay(20); + + rc = i2c_bit_add_bus(&chan->adapter); + if (rc == 0) + DBG_MSG("I2C bus %s registered.\n", name); + else + WRN_MSG("Failed to register I2C bus %s.\n", name); + return rc; +} + +void intelfb_create_i2c_busses(struct intelfb_info *dinfo) +{ + int i = 0; + + /* everyone has at least a single analog output */ + dinfo->num_outputs = 1; + dinfo->output[i].type = INTELFB_OUTPUT_ANALOG; + + /* setup the DDC bus for analog output */ + intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].ddc_bus, GPIOA, "CRTDDC_A"); + i++; + + /* need to add the output busses for each device + - this function is very incomplete + - i915GM has LVDS and TVOUT for example + */ + switch(dinfo->chipset) { + case INTEL_830M: + case INTEL_845G: + case INTEL_855GM: + case INTEL_865G: + dinfo->output[i].type = INTELFB_OUTPUT_DVO; + intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].ddc_bus, GPIOD, "DVODDC_D"); + intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].i2c_bus, GPIOE, "DVOI2C_E"); + i++; + break; + case INTEL_915G: + case INTEL_915GM: + /* has some LVDS + tv-out */ + case INTEL_945G: + case INTEL_945GM: + /* SDVO ports have a single control bus - 2 devices */ + dinfo->output[i].type = INTELFB_OUTPUT_SDVO; + intelfb_setup_i2c_bus(dinfo, &dinfo->output[i].i2c_bus, GPIOE, "SDVOCTRL_E"); + /* TODO: initialize the SDVO */ +// I830SDVOInit(pScrn, i, DVOB); + i++; + + /* set up SDVOC */ + dinfo->output[i].type = INTELFB_OUTPUT_SDVO; + dinfo->output[i].i2c_bus = dinfo->output[i - 1].i2c_bus; + /* TODO: initialize the SDVO */ +// I830SDVOInit(pScrn, i, DVOC); + i++; + break; + } + dinfo->num_outputs = i; +} + +void intelfb_delete_i2c_busses(struct intelfb_info *dinfo) +{ + int i; + + for (i = 0; i < MAX_OUTPUTS; i++) { + if (dinfo->output[i].i2c_bus.dinfo) { + i2c_bit_del_bus(&dinfo->output[i].i2c_bus.adapter); + dinfo->output[i].i2c_bus.dinfo = NULL; + } + if (dinfo->output[i].ddc_bus.dinfo) { + i2c_bit_del_bus(&dinfo->output[i].ddc_bus.adapter); + dinfo->output[i].ddc_bus.dinfo = NULL; + } + } +} diff --git a/drivers/video/intelfb/intelfbdrv.c b/drivers/video/intelfb/intelfbdrv.c index 06af89d44a0..6f9de04193d 100644 --- a/drivers/video/intelfb/intelfbdrv.c +++ b/drivers/video/intelfb/intelfbdrv.c @@ -136,6 +136,8 @@ static void __devinit get_initial_mode(struct intelfb_info *dinfo); static void update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var); +static int intelfb_open(struct fb_info *info, int user); +static int intelfb_release(struct fb_info *info, int user); static int intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info); static int intelfb_set_par(struct fb_info *info); @@ -194,6 +196,8 @@ static int num_registered = 0; /* fb ops */ static struct fb_ops intel_fb_ops = { .owner = THIS_MODULE, + .fb_open = intelfb_open, + .fb_release = intelfb_release, .fb_check_var = intelfb_check_var, .fb_set_par = intelfb_set_par, .fb_setcolreg = intelfb_setcolreg, @@ -446,6 +450,8 @@ cleanup(struct intelfb_info *dinfo) if (!dinfo) return; + intelfbhw_disable_irq(dinfo); + fb_dealloc_cmap(&dinfo->info->cmap); kfree(dinfo->info->pixmap.addr); @@ -467,6 +473,11 @@ cleanup(struct intelfb_info *dinfo) agp_free_memory(dinfo->gtt_ring_mem); } +#ifdef CONFIG_FB_INTEL_I2C + /* un-register I2C bus */ + intelfb_delete_i2c_busses(dinfo); +#endif + if (dinfo->mmio_base) iounmap((void __iomem *)dinfo->mmio_base); if (dinfo->aperture.virtual) @@ -844,6 +855,11 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) if (bailearly == 5) bailout(dinfo); +#ifdef CONFIG_FB_INTEL_I2C + /* register I2C bus */ + intelfb_create_i2c_busses(dinfo); +#endif + if (bailearly == 6) bailout(dinfo); @@ -888,6 +904,13 @@ intelfb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) } dinfo->registered = 1; + dinfo->open = 0; + + init_waitqueue_head(&dinfo->vsync.wait); + spin_lock_init(&dinfo->int_lock); + dinfo->irq_flags = 0; + dinfo->vsync.pan_display = 0; + dinfo->vsync.pan_offset = 0; return 0; @@ -1188,6 +1211,34 @@ update_dinfo(struct intelfb_info *dinfo, struct fb_var_screeninfo *var) ***************************************************************/ static int +intelfb_open(struct fb_info *info, int user) +{ + struct intelfb_info *dinfo = GET_DINFO(info); + + if (user) { + dinfo->open++; + } + + return 0; +} + +static int +intelfb_release(struct fb_info *info, int user) +{ + struct intelfb_info *dinfo = GET_DINFO(info); + + if (user) { + dinfo->open--; + msleep(1); + if (!dinfo->open) { + intelfbhw_disable_irq(dinfo); + } + } + + return 0; +} + +static int intelfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { int change_var = 0; @@ -1433,6 +1484,19 @@ static int intelfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { int retval = 0; + struct intelfb_info *dinfo = GET_DINFO(info); + u32 pipe = 0; + + switch (cmd) { + case FBIO_WAITFORVSYNC: + if (get_user(pipe, (__u32 __user *)arg)) + return -EFAULT; + + retval = intelfbhw_wait_for_vsync(dinfo, pipe); + break; + default: + break; + } return retval; } diff --git a/drivers/video/intelfb/intelfbhw.c b/drivers/video/intelfb/intelfbhw.c index 2a9322f9cfd..f887f1efd3f 100644 --- a/drivers/video/intelfb/intelfbhw.c +++ b/drivers/video/intelfb/intelfbhw.c @@ -32,6 +32,7 @@ #include <linux/pci.h> #include <linux/vmalloc.h> #include <linux/pagemap.h> +#include <linux/interrupt.h> #include <asm/io.h> @@ -368,7 +369,13 @@ intelfbhw_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) offset += dinfo->fb.offset << 12; - OUTREG(DSPABASE, offset); + dinfo->vsync.pan_offset = offset; + if ((var->activate & FB_ACTIVATE_VBL) && !intelfbhw_enable_irq(dinfo, 0)) { + dinfo->vsync.pan_display = 1; + } else { + dinfo->vsync.pan_display = 0; + OUTREG(DSPABASE, offset); + } return 0; } @@ -585,6 +592,11 @@ intelfbhw_read_hw_state(struct intelfb_info *dinfo, struct intelfb_hwstate *hw, hw->fw_blc_0 = INREG(FW_BLC_0); hw->fw_blc_1 = INREG(FW_BLC_1); + hw->hwstam = INREG16(HWSTAM); + hw->ier = INREG16(IER); + hw->iir = INREG16(IIR); + hw->imr = INREG16(IMR); + return 0; } @@ -613,6 +625,7 @@ static int calc_vclock(int index, int m1, int m2, int n, int p1, int p2, int lvd return vco / p; } +#if REGDUMP static void intelfbhw_get_p1p2(struct intelfb_info *dinfo, int dpll, int *o_p1, int *o_p2) { @@ -638,6 +651,7 @@ intelfbhw_get_p1p2(struct intelfb_info *dinfo, int dpll, int *o_p1, int *o_p2) *o_p1 = p1; *o_p2 = p2; } +#endif void @@ -794,6 +808,10 @@ intelfbhw_print_hw_state(struct intelfb_info *dinfo, struct intelfb_hwstate *hw) printk(" FW_BLC_0 0x%08x\n", hw->fw_blc_0); printk(" FW_BLC_1 0x%08x\n", hw->fw_blc_1); + printk(" HWSTAM 0x%04x\n", hw->hwstam); + printk(" IER 0x%04x\n", hw->ier); + printk(" IIR 0x%04x\n", hw->iir); + printk(" IMR 0x%04x\n", hw->imr); printk("hw state dump end\n"); #endif } @@ -1932,3 +1950,119 @@ intelfbhw_cursor_reset(struct intelfb_info *dinfo) { addr += 16; } } + +static irqreturn_t +intelfbhw_irq(int irq, void *dev_id, struct pt_regs *fp) { + int handled = 0; + u16 tmp; + struct intelfb_info *dinfo = (struct intelfb_info *)dev_id; + + spin_lock(&dinfo->int_lock); + + tmp = INREG16(IIR); + tmp &= VSYNC_PIPE_A_INTERRUPT; + + if (tmp == 0) { + spin_unlock(&dinfo->int_lock); + return IRQ_RETVAL(handled); + } + + OUTREG16(IIR, tmp); + + if (tmp & VSYNC_PIPE_A_INTERRUPT) { + dinfo->vsync.count++; + if (dinfo->vsync.pan_display) { + dinfo->vsync.pan_display = 0; + OUTREG(DSPABASE, dinfo->vsync.pan_offset); + } + wake_up_interruptible(&dinfo->vsync.wait); + handled = 1; + } + + spin_unlock(&dinfo->int_lock); + + return IRQ_RETVAL(handled); +} + +int +intelfbhw_enable_irq(struct intelfb_info *dinfo, int reenable) { + + if (!test_and_set_bit(0, &dinfo->irq_flags)) { + if (request_irq(dinfo->pdev->irq, intelfbhw_irq, SA_SHIRQ, "intelfb", dinfo)) { + clear_bit(0, &dinfo->irq_flags); + return -EINVAL; + } + + spin_lock_irq(&dinfo->int_lock); + OUTREG16(HWSTAM, 0xfffe); + OUTREG16(IMR, 0x0); + OUTREG16(IER, VSYNC_PIPE_A_INTERRUPT); + spin_unlock_irq(&dinfo->int_lock); + } else if (reenable) { + u16 ier; + + spin_lock_irq(&dinfo->int_lock); + ier = INREG16(IER); + if ((ier & VSYNC_PIPE_A_INTERRUPT)) { + DBG_MSG("someone disabled the IRQ [%08X]\n", ier); + OUTREG(IER, VSYNC_PIPE_A_INTERRUPT); + } + spin_unlock_irq(&dinfo->int_lock); + } + return 0; +} + +void +intelfbhw_disable_irq(struct intelfb_info *dinfo) { + u16 tmp; + + if (test_and_clear_bit(0, &dinfo->irq_flags)) { + if (dinfo->vsync.pan_display) { + dinfo->vsync.pan_display = 0; + OUTREG(DSPABASE, dinfo->vsync.pan_offset); + } + spin_lock_irq(&dinfo->int_lock); + OUTREG16(HWSTAM, 0xffff); + OUTREG16(IMR, 0xffff); + OUTREG16(IER, 0x0); + + tmp = INREG16(IIR); + OUTREG16(IIR, tmp); + spin_unlock_irq(&dinfo->int_lock); + + free_irq(dinfo->pdev->irq, dinfo); + } +} + +int +intelfbhw_wait_for_vsync(struct intelfb_info *dinfo, u32 pipe) { + struct intelfb_vsync *vsync; + unsigned int count; + int ret; + + switch (pipe) { + case 0: + vsync = &dinfo->vsync; + break; + default: + return -ENODEV; + } + + ret = intelfbhw_enable_irq(dinfo, 0); + if (ret) { + return ret; + } + + count = vsync->count; + ret = wait_event_interruptible_timeout(vsync->wait, count != vsync->count, HZ/10); + if (ret < 0) { + return ret; + } + if (ret == 0) { + intelfbhw_enable_irq(dinfo, 1); + DBG_MSG("wait_for_vsync timed out!\n"); + return -ETIMEDOUT; + } + + return 0; +} diff --git a/drivers/video/intelfb/intelfbhw.h b/drivers/video/intelfb/intelfbhw.h index 10acda098b7..8c54ba8fbdd 100644 --- a/drivers/video/intelfb/intelfbhw.h +++ b/drivers/video/intelfb/intelfbhw.h @@ -88,6 +88,19 @@ #define INSTDONE 0x2090 #define PRI_RING_EMPTY 1 +#define HWSTAM 0x2098 +#define IER 0x20A0 +#define IIR 0x20A4 +#define IMR 0x20A8 +#define VSYNC_PIPE_A_INTERRUPT (1 << 7) +#define PIPE_A_EVENT_INTERRUPT (1 << 4) +#define VSYNC_PIPE_B_INTERRUPT (1 << 5) +#define PIPE_B_EVENT_INTERRUPT (1 << 4) +#define HOST_PORT_EVENT_INTERRUPT (1 << 3) +#define CAPTURE_EVENT_INTERRUPT (1 << 2) +#define USER_DEFINED_INTERRUPT (1 << 1) +#define BREAKPOINT_INTERRUPT 1 + #define INSTPM 0x20c0 #define SYNC_FLUSH_ENABLE (1 << 5) @@ -113,6 +126,12 @@ #define FW_DISPC_BL_SHIFT 8 #define FW_DISPC_BL_MASK 0x7 +#define GPIOA 0x5010 +#define GPIOB 0x5014 +#define GPIOC 0x5018 // this may be external DDC on i830 +#define GPIOD 0x501C // this is DVO DDC +#define GPIOE 0x5020 // this is DVO i2C +#define GPIOF 0x5024 /* PLL registers */ #define VGA0_DIVISOR 0x06000 @@ -468,9 +487,12 @@ /* I/O macros */ #define INREG8(addr) readb((u8 __iomem *)(dinfo->mmio_base + (addr))) +#define INREG16(addr) readw((u16 __iomem *)(dinfo->mmio_base + (addr))) #define INREG(addr) readl((u32 __iomem *)(dinfo->mmio_base + (addr))) #define OUTREG8(addr, val) writeb((val),(u8 __iomem *)(dinfo->mmio_base + \ (addr))) +#define OUTREG16(addr, val) writew((val),(u16 __iomem *)(dinfo->mmio_base + \ + (addr))) #define OUTREG(addr, val) writel((val),(u32 __iomem *)(dinfo->mmio_base + \ (addr))) @@ -545,5 +567,8 @@ extern void intelfbhw_cursor_setcolor(struct intelfb_info *dinfo, u32 bg, extern void intelfbhw_cursor_load(struct intelfb_info *dinfo, int width, int height, u8 *data); extern void intelfbhw_cursor_reset(struct intelfb_info *dinfo); +extern int intelfbhw_enable_irq(struct intelfb_info *dinfo, int reenable); +extern void intelfbhw_disable_irq(struct intelfb_info *dinfo); +extern int intelfbhw_wait_for_vsync(struct intelfb_info *dinfo, u32 pipe); #endif /* _INTELFBHW_H */ diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h index 9418519a55d..0a8f750cbed 100644 --- a/include/linux/i2c-id.h +++ b/include/linux/i2c-id.h @@ -193,6 +193,7 @@ #define I2C_HW_B_RADEON 0x01001e /* radeon framebuffer driver */ #define I2C_HW_B_EM28XX 0x01001f /* em28xx video capture cards */ #define I2C_HW_B_CX2341X 0x010020 /* Conexant CX2341X MPEG encoder cards */ +#define I2C_HW_B_INTELFB 0x010021 /* intel framebuffer driver */ /* --- PCF 8584 based algorithms */ #define I2C_HW_P_LP 0x020000 /* Parallel port interface */ |