From b4a3ac9a3c26e82e31f8a8f55cb014bc580b1216 Mon Sep 17 00:00:00 2001 From: John Linn Date: Mon, 27 Oct 2008 22:17:22 -0400 Subject: Input: xilinx_ps2 - various cleanups Review comments were incorporated to improve the driver. 1. Some data was eliminated that was not needed. 2. Renaming of variables for clarity. 3. Removed unneeded type casting. 4. Changed to use dev_err rather than other I/O. 5. Merged together some functions. 6. Added kerneldoc format to functions. Signed-off-by: Sadanand Signed-off-by: John Linn Acked-by: Peter Korsgaard Acked-by: Grant Likely Signed-off-by: Dmitry Torokhov --- drivers/input/serio/xilinx_ps2.c | 220 ++++++++++++++++++++------------------- 1 file changed, 113 insertions(+), 107 deletions(-) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/xilinx_ps2.c b/drivers/input/serio/xilinx_ps2.c index 765007899d9..ebb22f88c84 100644 --- a/drivers/input/serio/xilinx_ps2.c +++ b/drivers/input/serio/xilinx_ps2.c @@ -58,23 +58,20 @@ /* Mask for all the Receive Interrupts */ #define XPS2_IPIXR_RX_ALL (XPS2_IPIXR_RX_OVF | XPS2_IPIXR_RX_ERR | \ - XPS2_IPIXR_RX_FULL) + XPS2_IPIXR_RX_FULL) /* Mask for all the Interrupts */ #define XPS2_IPIXR_ALL (XPS2_IPIXR_TX_ALL | XPS2_IPIXR_RX_ALL | \ - XPS2_IPIXR_WDT_TOUT) + XPS2_IPIXR_WDT_TOUT) /* Global Interrupt Enable mask */ #define XPS2_GIER_GIE_MASK 0x80000000 struct xps2data { int irq; - u32 phys_addr; - u32 remap_size; spinlock_t lock; - u8 rxb; /* Rx buffer */ void __iomem *base_address; /* virt. address of control registers */ - unsigned int dfl; + unsigned int flags; struct serio serio; /* serio */ }; @@ -82,8 +79,13 @@ struct xps2data { /* XPS PS/2 data transmission calls */ /************************************/ -/* - * xps2_recv() will attempt to receive a byte of data from the PS/2 port. +/** + * xps2_recv() - attempts to receive a byte from the PS/2 port. + * @drvdata: pointer to ps2 device private data structure + * @byte: address where the read data will be copied + * + * If there is any data available in the PS/2 receiver, this functions reads + * the data, otherwise it returns error. */ static int xps2_recv(struct xps2data *drvdata, u8 *byte) { @@ -116,33 +118,27 @@ static irqreturn_t xps2_interrupt(int irq, void *dev_id) /* Check which interrupt is active */ if (intr_sr & XPS2_IPIXR_RX_OVF) - printk(KERN_WARNING "%s: receive overrun error\n", - drvdata->serio.name); + dev_warn(drvdata->serio.dev.parent, "receive overrun error\n"); if (intr_sr & XPS2_IPIXR_RX_ERR) - drvdata->dfl |= SERIO_PARITY; + drvdata->flags |= SERIO_PARITY; if (intr_sr & (XPS2_IPIXR_TX_NOACK | XPS2_IPIXR_WDT_TOUT)) - drvdata->dfl |= SERIO_TIMEOUT; + drvdata->flags |= SERIO_TIMEOUT; if (intr_sr & XPS2_IPIXR_RX_FULL) { - status = xps2_recv(drvdata, &drvdata->rxb); + status = xps2_recv(drvdata, &c); /* Error, if a byte is not received */ if (status) { - printk(KERN_ERR - "%s: wrong rcvd byte count (%d)\n", - drvdata->serio.name, status); + dev_err(drvdata->serio.dev.parent, + "wrong rcvd byte count (%d)\n", status); } else { - c = drvdata->rxb; - serio_interrupt(&drvdata->serio, c, drvdata->dfl); - drvdata->dfl = 0; + serio_interrupt(&drvdata->serio, c, drvdata->flags); + drvdata->flags = 0; } } - if (intr_sr & XPS2_IPIXR_TX_ACK) - drvdata->dfl = 0; - return IRQ_HANDLED; } @@ -150,8 +146,15 @@ static irqreturn_t xps2_interrupt(int irq, void *dev_id) /* serio callbacks */ /*******************/ -/* - * sxps2_write() sends a byte out through the PS/2 interface. +/** + * sxps2_write() - sends a byte out through the PS/2 port. + * @pserio: pointer to the serio structure of the PS/2 port + * @c: data that needs to be written to the PS/2 port + * + * This function checks if the PS/2 transmitter is empty and sends a byte. + * Otherwise it returns error. Transmission fails only when nothing is connected + * to the PS/2 port. Thats why, we do not try to resend the data in case of a + * failure. */ static int sxps2_write(struct serio *pserio, unsigned char c) { @@ -174,33 +177,39 @@ static int sxps2_write(struct serio *pserio, unsigned char c) return status; } -/* - * sxps2_open() is called when a port is open by the higher layer. +/** + * sxps2_open() - called when a port is opened by the higher layer. + * @pserio: pointer to the serio structure of the PS/2 device + * + * This function requests irq and enables interrupts for the PS/2 device. */ static int sxps2_open(struct serio *pserio) { struct xps2data *drvdata = pserio->port_data; - int retval; + int error; + u8 c; - retval = request_irq(drvdata->irq, &xps2_interrupt, 0, + error = request_irq(drvdata->irq, &xps2_interrupt, 0, DRIVER_NAME, drvdata); - if (retval) { - printk(KERN_ERR - "%s: Couldn't allocate interrupt %d\n", - drvdata->serio.name, drvdata->irq); - return retval; + if (error) { + dev_err(drvdata->serio.dev.parent, + "Couldn't allocate interrupt %d\n", drvdata->irq); + return error; } /* start reception by enabling the interrupts */ out_be32(drvdata->base_address + XPS2_GIER_OFFSET, XPS2_GIER_GIE_MASK); out_be32(drvdata->base_address + XPS2_IPIER_OFFSET, XPS2_IPIXR_RX_ALL); - (void)xps2_recv(drvdata, &drvdata->rxb); + (void)xps2_recv(drvdata, &c); return 0; /* success */ } -/* - * sxps2_close() frees the interrupt. +/** + * sxps2_close() - frees the interrupt. + * @pserio: pointer to the serio structure of the PS/2 device + * + * This function frees the irq and disables interrupts for the PS/2 device. */ static void sxps2_close(struct serio *pserio) { @@ -212,24 +221,41 @@ static void sxps2_close(struct serio *pserio) free_irq(drvdata->irq, drvdata); } -/*********************/ -/* Device setup code */ -/*********************/ - -static int xps2_setup(struct device *dev, struct resource *regs_res, - struct resource *irq_res) +/** + * xps2_of_probe - probe method for the PS/2 device. + * @of_dev: pointer to OF device structure + * @match: pointer to the stucture used for matching a device + * + * This function probes the PS/2 device in the device tree. + * It initializes the driver data structure and the hardware. + * It returns 0, if the driver is bound to the PS/2 device, or a negative + * value if there is an error. + */ +static int __devinit xps2_of_probe(struct of_device *ofdev, + const struct of_device_id *match) { + struct resource r_irq; /* Interrupt resources */ + struct resource r_mem; /* IO mem resources */ struct xps2data *drvdata; struct serio *serio; - unsigned long remap_size; - int retval; + struct device *dev = &ofdev->dev; + resource_size_t remap_size, phys_addr; + int error; + + dev_info(dev, "Device Tree Probing \'%s\'\n", + ofdev->node->name); - if (!dev) - return -EINVAL; + /* Get iospace for the device */ + error = of_address_to_resource(ofdev->node, 0, &r_mem); + if (error) { + dev_err(dev, "invalid address\n"); + return error; + } - if (!regs_res || !irq_res) { - dev_err(dev, "IO resource(s) not found\n"); - return -EINVAL; + /* Get IRQ for the device */ + if (of_irq_to_resource(ofdev->node, 0, &r_irq) == NO_IRQ) { + dev_err(dev, "no IRQ found\n"); + return -ENODEV; } drvdata = kzalloc(sizeof(struct xps2data), GFP_KERNEL); @@ -241,24 +267,23 @@ static int xps2_setup(struct device *dev, struct resource *regs_res, dev_set_drvdata(dev, drvdata); spin_lock_init(&drvdata->lock); - drvdata->irq = irq_res->start; - - remap_size = regs_res->end - regs_res->start + 1; - if (!request_mem_region(regs_res->start, remap_size, DRIVER_NAME)) { - dev_err(dev, "Couldn't lock memory region at 0x%08X\n", - (unsigned int)regs_res->start); - retval = -EBUSY; + drvdata->irq = r_irq.start; + + phys_addr = r_mem.start; + remap_size = r_mem.end - r_mem.start + 1; + if (!request_mem_region(phys_addr, remap_size, DRIVER_NAME)) { + dev_err(dev, "Couldn't lock memory region at 0x%08llX\n", + (unsigned long long)phys_addr); + error = -EBUSY; goto failed1; } /* Fill in configuration data and add them to the list */ - drvdata->phys_addr = regs_res->start; - drvdata->remap_size = remap_size; - drvdata->base_address = ioremap(regs_res->start, remap_size); + drvdata->base_address = ioremap(phys_addr, remap_size); if (drvdata->base_address == NULL) { - dev_err(dev, "Couldn't ioremap memory at 0x%08X\n", - (unsigned int)regs_res->start); - retval = -EFAULT; + dev_err(dev, "Couldn't ioremap memory at 0x%08llX\n", + (unsigned long long)phys_addr); + error = -EFAULT; goto failed2; } @@ -269,8 +294,9 @@ static int xps2_setup(struct device *dev, struct resource *regs_res, * we have the PS2 in a good state */ out_be32(drvdata->base_address + XPS2_SRST_OFFSET, XPS2_SRST_RESET); - dev_info(dev, "Xilinx PS2 at 0x%08X mapped to 0x%p, irq=%d\n", - drvdata->phys_addr, drvdata->base_address, drvdata->irq); + dev_info(dev, "Xilinx PS2 at 0x%08llX mapped to 0x%p, irq=%d\n", + (unsigned long long)phys_addr, drvdata->base_address, + drvdata->irq); serio = &drvdata->serio; serio->id.type = SERIO_8042; @@ -280,71 +306,51 @@ static int xps2_setup(struct device *dev, struct resource *regs_res, serio->port_data = drvdata; serio->dev.parent = dev; snprintf(serio->name, sizeof(serio->name), - "Xilinx XPS PS/2 at %08X", drvdata->phys_addr); + "Xilinx XPS PS/2 at %08llX", (unsigned long long)phys_addr); snprintf(serio->phys, sizeof(serio->phys), - "xilinxps2/serio at %08X", drvdata->phys_addr); + "xilinxps2/serio at %08llX", (unsigned long long)phys_addr); + serio_register_port(serio); return 0; /* success */ failed2: - release_mem_region(regs_res->start, remap_size); + release_mem_region(phys_addr, remap_size); failed1: kfree(drvdata); dev_set_drvdata(dev, NULL); - return retval; -} - -/***************************/ -/* OF Platform Bus Support */ -/***************************/ - -static int __devinit xps2_of_probe(struct of_device *ofdev, const struct - of_device_id * match) -{ - struct resource r_irq; /* Interrupt resources */ - struct resource r_mem; /* IO mem resources */ - int rc = 0; - - printk(KERN_INFO "Device Tree Probing \'%s\'\n", - ofdev->node->name); - - /* Get iospace for the device */ - rc = of_address_to_resource(ofdev->node, 0, &r_mem); - if (rc) { - dev_err(&ofdev->dev, "invalid address\n"); - return rc; - } - - /* Get IRQ for the device */ - rc = of_irq_to_resource(ofdev->node, 0, &r_irq); - if (rc == NO_IRQ) { - dev_err(&ofdev->dev, "no IRQ found\n"); - return rc; - } - - return xps2_setup(&ofdev->dev, &r_mem, &r_irq); + return error; } +/** + * xps2_of_remove - unbinds the driver from the PS/2 device. + * @of_dev: pointer to OF device structure + * + * This function is called if a device is physically removed from the system or + * if the driver module is being unloaded. It frees any resources allocated to + * the device. + */ static int __devexit xps2_of_remove(struct of_device *of_dev) { struct device *dev = &of_dev->dev; - struct xps2data *drvdata; - - if (!dev) - return -EINVAL; - - drvdata = dev_get_drvdata(dev); + struct xps2data *drvdata = dev_get_drvdata(dev); + struct resource r_mem; /* IO mem resources */ serio_unregister_port(&drvdata->serio); iounmap(drvdata->base_address); - release_mem_region(drvdata->phys_addr, drvdata->remap_size); + + /* Get iospace of the device */ + if (of_address_to_resource(of_dev->node, 0, &r_mem)) + dev_err(dev, "invalid address\n"); + else + release_mem_region(r_mem.start, r_mem.end - r_mem.start + 1); + kfree(drvdata); dev_set_drvdata(dev, NULL); - return 0; /* success */ + return 0; } /* Match table for of_platform binding */ -- cgit v1.2.3 From a6c2490f010d9235b1424110c6f414460e41dfe1 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Thu, 30 Oct 2008 00:07:50 -0400 Subject: Input: struct device - replace bus_id with dev_name(), dev_set_name() Acked-by: Greg Kroah-Hartman Signed-off-by: Kay Sievers Signed-off-by: Dmitry Torokhov --- drivers/input/serio/pcips2.c | 2 +- drivers/input/serio/serio.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/pcips2.c b/drivers/input/serio/pcips2.c index 1b404f9e3bf..1dacbe0d934 100644 --- a/drivers/input/serio/pcips2.c +++ b/drivers/input/serio/pcips2.c @@ -153,7 +153,7 @@ static int __devinit pcips2_probe(struct pci_dev *dev, const struct pci_device_i serio->open = pcips2_open; serio->close = pcips2_close; strlcpy(serio->name, pci_name(dev), sizeof(serio->name)); - strlcpy(serio->phys, dev->dev.bus_id, sizeof(serio->phys)); + strlcpy(serio->phys, dev_name(&dev->dev), sizeof(serio->phys)); serio->port_data = ps2if; serio->dev.parent = &dev->dev; ps2if->io = serio; diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index 2f12d60eee3..bc033250dfc 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -546,8 +546,8 @@ static void serio_init_port(struct serio *serio) spin_lock_init(&serio->lock); mutex_init(&serio->drv_mutex); device_initialize(&serio->dev); - snprintf(serio->dev.bus_id, sizeof(serio->dev.bus_id), - "serio%ld", (long)atomic_inc_return(&serio_no) - 1); + dev_set_name(&serio->dev, "serio%ld", + (long)atomic_inc_return(&serio_no) - 1); serio->dev.bus = &serio_bus; serio->dev.release = serio_release_port; if (serio->parent) { -- cgit v1.2.3 From a2d781fc8d9b16113dd9440107d73c0f21d7cbef Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Wed, 19 Nov 2008 17:02:24 -0500 Subject: Input: libps2 - handle 0xfc responses from devices Signed-off-by: Dmitry Torokhov --- drivers/input/serio/libps2.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c index 2b304c22c20..67248c31e19 100644 --- a/drivers/input/serio/libps2.c +++ b/drivers/input/serio/libps2.c @@ -262,9 +262,17 @@ int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data) break; case PS2_RET_NAK: - ps2dev->nak = 1; + ps2dev->flags |= PS2_FLAG_NAK; + ps2dev->nak = PS2_RET_NAK; break; + case PS2_RET_ERR: + if (ps2dev->flags & PS2_FLAG_NAK) { + ps2dev->flags &= ~PS2_FLAG_NAK; + ps2dev->nak = PS2_RET_ERR; + break; + } + /* * Workaround for mice which don't ACK the Get ID command. * These are valid mouse IDs that we recognize. @@ -282,8 +290,11 @@ int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data) } - if (!ps2dev->nak && ps2dev->cmdcnt) - ps2dev->flags |= PS2_FLAG_CMD | PS2_FLAG_CMD1; + if (!ps2dev->nak) { + ps2dev->flags &= ~PS2_FLAG_NAK; + if (ps2dev->cmdcnt) + ps2dev->flags |= PS2_FLAG_CMD | PS2_FLAG_CMD1; + } ps2dev->flags &= ~PS2_FLAG_ACK; wake_up(&ps2dev->wait); @@ -329,6 +340,7 @@ void ps2_cmd_aborted(struct ps2dev *ps2dev) if (ps2dev->flags & (PS2_FLAG_ACK | PS2_FLAG_CMD)) wake_up(&ps2dev->wait); - ps2dev->flags = 0; + /* reset all flags except last nack */ + ps2dev->flags &= PS2_FLAG_NAK; } EXPORT_SYMBOL(ps2_cmd_aborted); -- cgit v1.2.3 From a6f66ddf7a8b34bb28e4d1c47531b61c671eac9b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ozan=20=C3=87a=C4=9Flayan?= Date: Sat, 20 Dec 2008 04:04:51 -0500 Subject: Input: i8042 - add Gigabyte M912 netbook to noloop exception table MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Gigabyte M912's touchpad needs i8042.noloop for working. Signed-off-by: Ozan Çağlayan Signed-off-by: Dmitry Torokhov --- drivers/input/serio/i8042-x86ia64io.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 29e686388a2..e196bf246f3 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -143,6 +143,14 @@ static struct dmi_system_id __initdata i8042_dmi_noloop_table[] = { DMI_MATCH(DMI_PRODUCT_VERSION, "M606"), }, }, + { + .ident = "Gigabyte M912", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "M912"), + DMI_MATCH(DMI_PRODUCT_VERSION, "01"), + }, + }, { } }; -- cgit v1.2.3 From c10a93a0a36b245ce48493f134b9e243a8bfddd1 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 29 Dec 2008 04:44:44 -0800 Subject: Input: HIL drivers - add MODULE_ALIAS() Add MODULE_ALIAS() to the HIL keyboard (hil_kbd.c) and HIL mouse (hil_ptr.c) drivers to make kernel module autoloader functional. Report HIL port number ID in serio id.id field. Signed-off-by: Helge Deller Signed-off-by: Dmitry Torokhov --- drivers/input/serio/hil_mlc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/hil_mlc.c b/drivers/input/serio/hil_mlc.c index 37586a68d34..7ba9f2b2c04 100644 --- a/drivers/input/serio/hil_mlc.c +++ b/drivers/input/serio/hil_mlc.c @@ -934,6 +934,7 @@ int hil_mlc_register(hil_mlc *mlc) snprintf(mlc_serio->name, sizeof(mlc_serio->name)-1, "HIL_SERIO%d", i); snprintf(mlc_serio->phys, sizeof(mlc_serio->phys)-1, "HIL%d", i); mlc_serio->id = hil_mlc_serio_id; + mlc_serio->id.id = i; /* HIL port no. */ mlc_serio->write = hil_mlc_serio_write; mlc_serio->open = hil_mlc_serio_open; mlc_serio->close = hil_mlc_serio_close; -- cgit v1.2.3 From 9334e90d5ac5ee1fa6d8b75acb7c64a8907787d1 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Tue, 6 Jan 2009 01:35:45 -0800 Subject: Input: i8042 - add Dell Vostro 1510 to nomux list Dell Vostro needs 'nomux' quirk, otherwise the touchpad misbehaves. Reported-by: Robert Kiwanuka Signed-off-by: Jiri Kosina Signed-off-by: Dmitry Torokhov --- drivers/input/serio/i8042-x86ia64io.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index e196bf246f3..6fa2deff744 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -359,6 +359,13 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "HEL80I"), }, }, + { + .ident = "Dell Vostro 1510", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro1510"), + }, + }, { } }; -- cgit v1.2.3