![Greg Kroah-Hartman](/assets/img/avatar_default.png)
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
791 lines
20 KiB
C
791 lines
20 KiB
C
/*
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* Copyright 1998-2009 VIA Technologies, Inc. All Rights Reserved.
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* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
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* Copyright 2009 Jonathan Corbet <corbet@lwn.net>
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*/
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/*
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* Core code for the Via multifunction framebuffer device.
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*/
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#include <linux/via-core.h>
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#include <linux/via_i2c.h>
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#include <linux/via-gpio.h>
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#include "global.h"
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/list.h>
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#include <linux/pm.h>
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#include <asm/olpc.h>
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/*
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* The default port config.
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*/
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static struct via_port_cfg adap_configs[] = {
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[VIA_PORT_26] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x26 },
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[VIA_PORT_31] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x31 },
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[VIA_PORT_25] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x25 },
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[VIA_PORT_2C] = { VIA_PORT_GPIO, VIA_MODE_I2C, VIASR, 0x2c },
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[VIA_PORT_3D] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x3d },
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{ 0, 0, 0, 0 }
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};
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/*
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* The OLPC XO-1.5 puts the camera power and reset lines onto
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* GPIO 2C.
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*/
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static struct via_port_cfg olpc_adap_configs[] = {
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[VIA_PORT_26] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x26 },
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[VIA_PORT_31] = { VIA_PORT_I2C, VIA_MODE_I2C, VIASR, 0x31 },
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[VIA_PORT_25] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x25 },
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[VIA_PORT_2C] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x2c },
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[VIA_PORT_3D] = { VIA_PORT_GPIO, VIA_MODE_GPIO, VIASR, 0x3d },
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{ 0, 0, 0, 0 }
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};
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/*
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* We currently only support one viafb device (will there ever be
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* more than one?), so just declare it globally here.
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*/
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static struct viafb_dev global_dev;
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/*
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* Basic register access; spinlock required.
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*/
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static inline void viafb_mmio_write(int reg, u32 v)
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{
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iowrite32(v, global_dev.engine_mmio + reg);
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}
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static inline int viafb_mmio_read(int reg)
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{
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return ioread32(global_dev.engine_mmio + reg);
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}
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/* ---------------------------------------------------------------------- */
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/*
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* Interrupt management. We have a single IRQ line for a lot of
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* different functions, so we need to share it. The design here
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* is that we don't want to reimplement the shared IRQ code here;
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* we also want to avoid having contention for a single handler thread.
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* So each subdev driver which needs interrupts just requests
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* them directly from the kernel. We just have what's needed for
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* overall access to the interrupt control register.
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*/
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/*
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* Which interrupts are enabled now?
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*/
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static u32 viafb_enabled_ints;
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static void viafb_int_init(void)
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{
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viafb_enabled_ints = 0;
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viafb_mmio_write(VDE_INTERRUPT, 0);
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}
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/*
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* Allow subdevs to ask for specific interrupts to be enabled. These
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* functions must be called with reg_lock held
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*/
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void viafb_irq_enable(u32 mask)
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{
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viafb_enabled_ints |= mask;
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viafb_mmio_write(VDE_INTERRUPT, viafb_enabled_ints | VDE_I_ENABLE);
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}
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EXPORT_SYMBOL_GPL(viafb_irq_enable);
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void viafb_irq_disable(u32 mask)
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{
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viafb_enabled_ints &= ~mask;
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if (viafb_enabled_ints == 0)
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viafb_mmio_write(VDE_INTERRUPT, 0); /* Disable entirely */
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else
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viafb_mmio_write(VDE_INTERRUPT,
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viafb_enabled_ints | VDE_I_ENABLE);
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}
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EXPORT_SYMBOL_GPL(viafb_irq_disable);
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/* ---------------------------------------------------------------------- */
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/*
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* Currently, the camera driver is the only user of the DMA code, so we
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* only compile it in if the camera driver is being built. Chances are,
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* most viafb systems will not need to have this extra code for a while.
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* As soon as another user comes long, the ifdef can be removed.
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*/
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#if defined(CONFIG_VIDEO_VIA_CAMERA) || defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
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/*
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* Access to the DMA engine. This currently provides what the camera
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* driver needs (i.e. outgoing only) but is easily expandable if need
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* be.
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*/
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/*
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* There are four DMA channels in the vx855. For now, we only
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* use one of them, though. Most of the time, the DMA channel
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* will be idle, so we keep the IRQ handler unregistered except
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* when some subsystem has indicated an interest.
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*/
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static int viafb_dma_users;
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static DECLARE_COMPLETION(viafb_dma_completion);
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/*
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* This mutex protects viafb_dma_users and our global interrupt
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* registration state; it also serializes access to the DMA
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* engine.
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*/
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static DEFINE_MUTEX(viafb_dma_lock);
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/*
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* The VX855 DMA descriptor (used for s/g transfers) looks
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* like this.
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*/
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struct viafb_vx855_dma_descr {
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u32 addr_low; /* Low part of phys addr */
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u32 addr_high; /* High 12 bits of addr */
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u32 fb_offset; /* Offset into FB memory */
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u32 seg_size; /* Size, 16-byte units */
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u32 tile_mode; /* "tile mode" setting */
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u32 next_desc_low; /* Next descriptor addr */
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u32 next_desc_high;
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u32 pad; /* Fill out to 64 bytes */
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};
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/*
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* Flags added to the "next descriptor low" pointers
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*/
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#define VIAFB_DMA_MAGIC 0x01 /* ??? Just has to be there */
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#define VIAFB_DMA_FINAL_SEGMENT 0x02 /* Final segment */
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/*
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* The completion IRQ handler.
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*/
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static irqreturn_t viafb_dma_irq(int irq, void *data)
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{
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int csr;
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irqreturn_t ret = IRQ_NONE;
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spin_lock(&global_dev.reg_lock);
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csr = viafb_mmio_read(VDMA_CSR0);
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if (csr & VDMA_C_DONE) {
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viafb_mmio_write(VDMA_CSR0, VDMA_C_DONE);
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complete(&viafb_dma_completion);
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ret = IRQ_HANDLED;
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}
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spin_unlock(&global_dev.reg_lock);
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return ret;
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}
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/*
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* Indicate a need for DMA functionality.
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*/
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int viafb_request_dma(void)
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{
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int ret = 0;
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/*
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* Only VX855 is supported currently.
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*/
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if (global_dev.chip_type != UNICHROME_VX855)
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return -ENODEV;
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/*
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* Note the new user and set up our interrupt handler
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* if need be.
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*/
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mutex_lock(&viafb_dma_lock);
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viafb_dma_users++;
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if (viafb_dma_users == 1) {
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ret = request_irq(global_dev.pdev->irq, viafb_dma_irq,
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IRQF_SHARED, "via-dma", &viafb_dma_users);
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if (ret)
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viafb_dma_users--;
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else
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viafb_irq_enable(VDE_I_DMA0TDEN);
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}
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mutex_unlock(&viafb_dma_lock);
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return ret;
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}
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EXPORT_SYMBOL_GPL(viafb_request_dma);
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void viafb_release_dma(void)
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{
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mutex_lock(&viafb_dma_lock);
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viafb_dma_users--;
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if (viafb_dma_users == 0) {
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viafb_irq_disable(VDE_I_DMA0TDEN);
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free_irq(global_dev.pdev->irq, &viafb_dma_users);
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}
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mutex_unlock(&viafb_dma_lock);
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}
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EXPORT_SYMBOL_GPL(viafb_release_dma);
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#if 0
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/*
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* Copy a single buffer from FB memory, synchronously. This code works
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* but is not currently used.
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*/
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void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len)
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{
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unsigned long flags;
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int csr;
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mutex_lock(&viafb_dma_lock);
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init_completion(&viafb_dma_completion);
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/*
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* Program the controller.
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*/
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spin_lock_irqsave(&global_dev.reg_lock, flags);
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viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_DONE);
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/* Enable ints; must happen after CSR0 write! */
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viafb_mmio_write(VDMA_MR0, VDMA_MR_TDIE);
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viafb_mmio_write(VDMA_MARL0, (int) (paddr & 0xfffffff0));
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viafb_mmio_write(VDMA_MARH0, (int) ((paddr >> 28) & 0xfff));
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/* Data sheet suggests DAR0 should be <<4, but it lies */
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viafb_mmio_write(VDMA_DAR0, offset);
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viafb_mmio_write(VDMA_DQWCR0, len >> 4);
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viafb_mmio_write(VDMA_TMR0, 0);
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viafb_mmio_write(VDMA_DPRL0, 0);
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viafb_mmio_write(VDMA_DPRH0, 0);
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viafb_mmio_write(VDMA_PMR0, 0);
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csr = viafb_mmio_read(VDMA_CSR0);
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viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_START);
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spin_unlock_irqrestore(&global_dev.reg_lock, flags);
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/*
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* Now we just wait until the interrupt handler says
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* we're done.
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*/
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wait_for_completion_interruptible(&viafb_dma_completion);
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viafb_mmio_write(VDMA_MR0, 0); /* Reset int enable */
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mutex_unlock(&viafb_dma_lock);
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}
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EXPORT_SYMBOL_GPL(viafb_dma_copy_out);
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#endif
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/*
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* Do a scatter/gather DMA copy from FB memory. You must have done
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* a successful call to viafb_request_dma() first.
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*/
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int viafb_dma_copy_out_sg(unsigned int offset, struct scatterlist *sg, int nsg)
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{
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struct viafb_vx855_dma_descr *descr;
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void *descrpages;
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dma_addr_t descr_handle;
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unsigned long flags;
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int i;
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struct scatterlist *sgentry;
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dma_addr_t nextdesc;
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/*
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* Get a place to put the descriptors.
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*/
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descrpages = dma_alloc_coherent(&global_dev.pdev->dev,
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nsg*sizeof(struct viafb_vx855_dma_descr),
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&descr_handle, GFP_KERNEL);
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if (descrpages == NULL) {
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dev_err(&global_dev.pdev->dev, "Unable to get descr page.\n");
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return -ENOMEM;
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}
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mutex_lock(&viafb_dma_lock);
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/*
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* Fill them in.
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*/
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descr = descrpages;
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nextdesc = descr_handle + sizeof(struct viafb_vx855_dma_descr);
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for_each_sg(sg, sgentry, nsg, i) {
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dma_addr_t paddr = sg_dma_address(sgentry);
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descr->addr_low = paddr & 0xfffffff0;
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descr->addr_high = ((u64) paddr >> 32) & 0x0fff;
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descr->fb_offset = offset;
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descr->seg_size = sg_dma_len(sgentry) >> 4;
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descr->tile_mode = 0;
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descr->next_desc_low = (nextdesc&0xfffffff0) | VIAFB_DMA_MAGIC;
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descr->next_desc_high = ((u64) nextdesc >> 32) & 0x0fff;
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descr->pad = 0xffffffff; /* VIA driver does this */
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offset += sg_dma_len(sgentry);
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nextdesc += sizeof(struct viafb_vx855_dma_descr);
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descr++;
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}
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descr[-1].next_desc_low = VIAFB_DMA_FINAL_SEGMENT|VIAFB_DMA_MAGIC;
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/*
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* Program the engine.
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*/
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spin_lock_irqsave(&global_dev.reg_lock, flags);
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init_completion(&viafb_dma_completion);
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viafb_mmio_write(VDMA_DQWCR0, 0);
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viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_DONE);
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viafb_mmio_write(VDMA_MR0, VDMA_MR_TDIE | VDMA_MR_CHAIN);
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viafb_mmio_write(VDMA_DPRL0, descr_handle | VIAFB_DMA_MAGIC);
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viafb_mmio_write(VDMA_DPRH0,
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(((u64)descr_handle >> 32) & 0x0fff) | 0xf0000);
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(void) viafb_mmio_read(VDMA_CSR0);
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viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_START);
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spin_unlock_irqrestore(&global_dev.reg_lock, flags);
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/*
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* Now we just wait until the interrupt handler says
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* we're done. Except that, actually, we need to wait a little
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* longer: the interrupts seem to jump the gun a little and we
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* get corrupted frames sometimes.
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*/
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wait_for_completion_timeout(&viafb_dma_completion, 1);
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msleep(1);
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if ((viafb_mmio_read(VDMA_CSR0)&VDMA_C_DONE) == 0)
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printk(KERN_ERR "VIA DMA timeout!\n");
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/*
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* Clean up and we're done.
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*/
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viafb_mmio_write(VDMA_CSR0, VDMA_C_DONE);
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viafb_mmio_write(VDMA_MR0, 0); /* Reset int enable */
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mutex_unlock(&viafb_dma_lock);
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dma_free_coherent(&global_dev.pdev->dev,
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nsg*sizeof(struct viafb_vx855_dma_descr), descrpages,
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descr_handle);
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return 0;
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}
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EXPORT_SYMBOL_GPL(viafb_dma_copy_out_sg);
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#endif /* CONFIG_VIDEO_VIA_CAMERA */
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/* ---------------------------------------------------------------------- */
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/*
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* Figure out how big our framebuffer memory is. Kind of ugly,
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* but evidently we can't trust the information found in the
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* fbdev configuration area.
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*/
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static u16 via_function3[] = {
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CLE266_FUNCTION3, KM400_FUNCTION3, CN400_FUNCTION3, CN700_FUNCTION3,
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CX700_FUNCTION3, KM800_FUNCTION3, KM890_FUNCTION3, P4M890_FUNCTION3,
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P4M900_FUNCTION3, VX800_FUNCTION3, VX855_FUNCTION3, VX900_FUNCTION3,
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};
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/* Get the BIOS-configured framebuffer size from PCI configuration space
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* of function 3 in the respective chipset */
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static int viafb_get_fb_size_from_pci(int chip_type)
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{
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int i;
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u8 offset = 0;
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u32 FBSize;
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u32 VideoMemSize;
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/* search for the "FUNCTION3" device in this chipset */
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for (i = 0; i < ARRAY_SIZE(via_function3); i++) {
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struct pci_dev *pdev;
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pdev = pci_get_device(PCI_VENDOR_ID_VIA, via_function3[i],
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NULL);
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if (!pdev)
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continue;
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DEBUG_MSG(KERN_INFO "Device ID = %x\n", pdev->device);
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switch (pdev->device) {
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case CLE266_FUNCTION3:
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case KM400_FUNCTION3:
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offset = 0xE0;
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break;
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case CN400_FUNCTION3:
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case CN700_FUNCTION3:
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case CX700_FUNCTION3:
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case KM800_FUNCTION3:
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case KM890_FUNCTION3:
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case P4M890_FUNCTION3:
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case P4M900_FUNCTION3:
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case VX800_FUNCTION3:
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case VX855_FUNCTION3:
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case VX900_FUNCTION3:
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/*case CN750_FUNCTION3: */
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offset = 0xA0;
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break;
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}
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if (!offset)
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break;
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pci_read_config_dword(pdev, offset, &FBSize);
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pci_dev_put(pdev);
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}
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if (!offset) {
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printk(KERN_ERR "cannot determine framebuffer size\n");
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return -EIO;
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}
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FBSize = FBSize & 0x00007000;
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DEBUG_MSG(KERN_INFO "FB Size = %x\n", FBSize);
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if (chip_type < UNICHROME_CX700) {
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switch (FBSize) {
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case 0x00004000:
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VideoMemSize = (16 << 20); /*16M */
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break;
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case 0x00005000:
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VideoMemSize = (32 << 20); /*32M */
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break;
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case 0x00006000:
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VideoMemSize = (64 << 20); /*64M */
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break;
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default:
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VideoMemSize = (32 << 20); /*32M */
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break;
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}
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} else {
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switch (FBSize) {
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case 0x00001000:
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VideoMemSize = (8 << 20); /*8M */
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break;
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case 0x00002000:
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VideoMemSize = (16 << 20); /*16M */
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break;
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case 0x00003000:
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VideoMemSize = (32 << 20); /*32M */
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break;
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case 0x00004000:
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VideoMemSize = (64 << 20); /*64M */
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break;
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case 0x00005000:
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VideoMemSize = (128 << 20); /*128M */
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break;
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case 0x00006000:
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VideoMemSize = (256 << 20); /*256M */
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break;
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case 0x00007000: /* Only on VX855/875 */
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VideoMemSize = (512 << 20); /*512M */
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break;
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default:
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VideoMemSize = (32 << 20); /*32M */
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break;
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}
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}
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return VideoMemSize;
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}
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/*
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* Figure out and map our MMIO regions.
|
|
*/
|
|
static int via_pci_setup_mmio(struct viafb_dev *vdev)
|
|
{
|
|
int ret;
|
|
/*
|
|
* Hook up to the device registers. Note that we soldier
|
|
* on if it fails; the framebuffer can operate (without
|
|
* acceleration) without this region.
|
|
*/
|
|
vdev->engine_start = pci_resource_start(vdev->pdev, 1);
|
|
vdev->engine_len = pci_resource_len(vdev->pdev, 1);
|
|
vdev->engine_mmio = ioremap_nocache(vdev->engine_start,
|
|
vdev->engine_len);
|
|
if (vdev->engine_mmio == NULL)
|
|
dev_err(&vdev->pdev->dev,
|
|
"Unable to map engine MMIO; operation will be "
|
|
"slow and crippled.\n");
|
|
/*
|
|
* Map in framebuffer memory. For now, failure here is
|
|
* fatal. Unfortunately, in the absence of significant
|
|
* vmalloc space, failure here is also entirely plausible.
|
|
* Eventually we want to move away from mapping this
|
|
* entire region.
|
|
*/
|
|
if (vdev->chip_type == UNICHROME_VX900)
|
|
vdev->fbmem_start = pci_resource_start(vdev->pdev, 2);
|
|
else
|
|
vdev->fbmem_start = pci_resource_start(vdev->pdev, 0);
|
|
ret = vdev->fbmem_len = viafb_get_fb_size_from_pci(vdev->chip_type);
|
|
if (ret < 0)
|
|
goto out_unmap;
|
|
|
|
/* try to map less memory on failure, 8 MB should be still enough */
|
|
for (; vdev->fbmem_len >= 8 << 20; vdev->fbmem_len /= 2) {
|
|
vdev->fbmem = ioremap_wc(vdev->fbmem_start, vdev->fbmem_len);
|
|
if (vdev->fbmem)
|
|
break;
|
|
}
|
|
|
|
if (vdev->fbmem == NULL) {
|
|
ret = -ENOMEM;
|
|
goto out_unmap;
|
|
}
|
|
return 0;
|
|
out_unmap:
|
|
iounmap(vdev->engine_mmio);
|
|
return ret;
|
|
}
|
|
|
|
static void via_pci_teardown_mmio(struct viafb_dev *vdev)
|
|
{
|
|
iounmap(vdev->fbmem);
|
|
iounmap(vdev->engine_mmio);
|
|
}
|
|
|
|
/*
|
|
* Create our subsidiary devices.
|
|
*/
|
|
static struct viafb_subdev_info {
|
|
char *name;
|
|
struct platform_device *platdev;
|
|
} viafb_subdevs[] = {
|
|
{
|
|
.name = "viafb-gpio",
|
|
},
|
|
{
|
|
.name = "viafb-i2c",
|
|
},
|
|
#if defined(CONFIG_VIDEO_VIA_CAMERA) || defined(CONFIG_VIDEO_VIA_CAMERA_MODULE)
|
|
{
|
|
.name = "viafb-camera",
|
|
},
|
|
#endif
|
|
};
|
|
#define N_SUBDEVS ARRAY_SIZE(viafb_subdevs)
|
|
|
|
static int via_create_subdev(struct viafb_dev *vdev,
|
|
struct viafb_subdev_info *info)
|
|
{
|
|
int ret;
|
|
|
|
info->platdev = platform_device_alloc(info->name, -1);
|
|
if (!info->platdev) {
|
|
dev_err(&vdev->pdev->dev, "Unable to allocate pdev %s\n",
|
|
info->name);
|
|
return -ENOMEM;
|
|
}
|
|
info->platdev->dev.parent = &vdev->pdev->dev;
|
|
info->platdev->dev.platform_data = vdev;
|
|
ret = platform_device_add(info->platdev);
|
|
if (ret) {
|
|
dev_err(&vdev->pdev->dev, "Unable to add pdev %s\n",
|
|
info->name);
|
|
platform_device_put(info->platdev);
|
|
info->platdev = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int via_setup_subdevs(struct viafb_dev *vdev)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* Ignore return values. Even if some of the devices
|
|
* fail to be created, we'll still be able to use some
|
|
* of the rest.
|
|
*/
|
|
for (i = 0; i < N_SUBDEVS; i++)
|
|
via_create_subdev(vdev, viafb_subdevs + i);
|
|
return 0;
|
|
}
|
|
|
|
static void via_teardown_subdevs(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < N_SUBDEVS; i++)
|
|
if (viafb_subdevs[i].platdev) {
|
|
viafb_subdevs[i].platdev->dev.platform_data = NULL;
|
|
platform_device_unregister(viafb_subdevs[i].platdev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Power management functions
|
|
*/
|
|
#ifdef CONFIG_PM
|
|
static LIST_HEAD(viafb_pm_hooks);
|
|
static DEFINE_MUTEX(viafb_pm_hooks_lock);
|
|
|
|
void viafb_pm_register(struct viafb_pm_hooks *hooks)
|
|
{
|
|
INIT_LIST_HEAD(&hooks->list);
|
|
|
|
mutex_lock(&viafb_pm_hooks_lock);
|
|
list_add_tail(&hooks->list, &viafb_pm_hooks);
|
|
mutex_unlock(&viafb_pm_hooks_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(viafb_pm_register);
|
|
|
|
void viafb_pm_unregister(struct viafb_pm_hooks *hooks)
|
|
{
|
|
mutex_lock(&viafb_pm_hooks_lock);
|
|
list_del(&hooks->list);
|
|
mutex_unlock(&viafb_pm_hooks_lock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(viafb_pm_unregister);
|
|
|
|
static int via_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct viafb_pm_hooks *hooks;
|
|
|
|
if (state.event != PM_EVENT_SUSPEND)
|
|
return 0;
|
|
/*
|
|
* "I've occasionally hit a few drivers that caused suspend
|
|
* failures, and each and every time it was a driver bug, and
|
|
* the right thing to do was to just ignore the error and suspend
|
|
* anyway - returning an error code and trying to undo the suspend
|
|
* is not what anybody ever really wants, even if our model
|
|
*_allows_ for it."
|
|
* -- Linus Torvalds, Dec. 7, 2009
|
|
*/
|
|
mutex_lock(&viafb_pm_hooks_lock);
|
|
list_for_each_entry_reverse(hooks, &viafb_pm_hooks, list)
|
|
hooks->suspend(hooks->private);
|
|
mutex_unlock(&viafb_pm_hooks_lock);
|
|
|
|
pci_save_state(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
return 0;
|
|
}
|
|
|
|
static int via_resume(struct pci_dev *pdev)
|
|
{
|
|
struct viafb_pm_hooks *hooks;
|
|
|
|
/* Get the bus side powered up */
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_restore_state(pdev);
|
|
if (pci_enable_device(pdev))
|
|
return 0;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
/* Now bring back any subdevs */
|
|
mutex_lock(&viafb_pm_hooks_lock);
|
|
list_for_each_entry(hooks, &viafb_pm_hooks, list)
|
|
hooks->resume(hooks->private);
|
|
mutex_unlock(&viafb_pm_hooks_lock);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
static int via_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
int ret;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* Global device initialization.
|
|
*/
|
|
memset(&global_dev, 0, sizeof(global_dev));
|
|
global_dev.pdev = pdev;
|
|
global_dev.chip_type = ent->driver_data;
|
|
global_dev.port_cfg = adap_configs;
|
|
if (machine_is_olpc())
|
|
global_dev.port_cfg = olpc_adap_configs;
|
|
|
|
spin_lock_init(&global_dev.reg_lock);
|
|
ret = via_pci_setup_mmio(&global_dev);
|
|
if (ret)
|
|
goto out_disable;
|
|
/*
|
|
* Set up interrupts and create our subdevices. Continue even if
|
|
* some things fail.
|
|
*/
|
|
viafb_int_init();
|
|
via_setup_subdevs(&global_dev);
|
|
/*
|
|
* Set up the framebuffer device
|
|
*/
|
|
ret = via_fb_pci_probe(&global_dev);
|
|
if (ret)
|
|
goto out_subdevs;
|
|
return 0;
|
|
|
|
out_subdevs:
|
|
via_teardown_subdevs();
|
|
via_pci_teardown_mmio(&global_dev);
|
|
out_disable:
|
|
pci_disable_device(pdev);
|
|
return ret;
|
|
}
|
|
|
|
static void via_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
via_teardown_subdevs();
|
|
via_fb_pci_remove(pdev);
|
|
via_pci_teardown_mmio(&global_dev);
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
|
|
static struct pci_device_id via_pci_table[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CLE266_DID),
|
|
.driver_data = UNICHROME_CLE266 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_K400_DID),
|
|
.driver_data = UNICHROME_K400 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_K800_DID),
|
|
.driver_data = UNICHROME_K800 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_PM800_DID),
|
|
.driver_data = UNICHROME_PM800 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CN700_DID),
|
|
.driver_data = UNICHROME_CN700 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CX700_DID),
|
|
.driver_data = UNICHROME_CX700 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_CN750_DID),
|
|
.driver_data = UNICHROME_CN750 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_K8M890_DID),
|
|
.driver_data = UNICHROME_K8M890 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_P4M890_DID),
|
|
.driver_data = UNICHROME_P4M890 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_P4M900_DID),
|
|
.driver_data = UNICHROME_P4M900 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX800_DID),
|
|
.driver_data = UNICHROME_VX800 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX855_DID),
|
|
.driver_data = UNICHROME_VX855 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_VIA, UNICHROME_VX900_DID),
|
|
.driver_data = UNICHROME_VX900 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, via_pci_table);
|
|
|
|
static struct pci_driver via_driver = {
|
|
.name = "viafb",
|
|
.id_table = via_pci_table,
|
|
.probe = via_pci_probe,
|
|
.remove = via_pci_remove,
|
|
#ifdef CONFIG_PM
|
|
.suspend = via_suspend,
|
|
.resume = via_resume,
|
|
#endif
|
|
};
|
|
|
|
static int __init via_core_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = viafb_init();
|
|
if (ret)
|
|
return ret;
|
|
viafb_i2c_init();
|
|
viafb_gpio_init();
|
|
return pci_register_driver(&via_driver);
|
|
}
|
|
|
|
static void __exit via_core_exit(void)
|
|
{
|
|
pci_unregister_driver(&via_driver);
|
|
viafb_gpio_exit();
|
|
viafb_i2c_exit();
|
|
viafb_exit();
|
|
}
|
|
|
|
module_init(via_core_init);
|
|
module_exit(via_core_exit);
|