summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/amba/bus.c88
-rw-r--r--drivers/gpio/pl061.c4
-rw-r--r--drivers/misc/Kconfig10
-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/arm-charlcd.c396
-rw-r--r--drivers/mmc/host/mmci.c148
-rw-r--r--drivers/mmc/host/mmci.h39
-rw-r--r--drivers/regulator/ab3100.c4
-rw-r--r--drivers/regulator/tps6507x-regulator.c36
-rw-r--r--drivers/regulator/wm8350-regulator.c2
-rw-r--r--drivers/rtc/rtc-pl031.c2
-rw-r--r--drivers/s390/scsi/zfcp_erp.c8
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c10
-rw-r--r--drivers/s390/scsi/zfcp_qdio.c10
-rw-r--r--drivers/scsi/ibmvscsi/rpa_vscsi.c13
-rw-r--r--drivers/scsi/ipr.c51
-rw-r--r--drivers/scsi/ipr.h5
-rw-r--r--drivers/serial/amba-pl010.c2
-rw-r--r--drivers/serial/amba-pl011.c90
-rw-r--r--drivers/usb/gadget/at91_udc.c205
-rw-r--r--drivers/usb/gadget/at91_udc.h3
-rw-r--r--drivers/video/omap2/vram.c33
22 files changed, 906 insertions, 254 deletions
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index f60b2b6a0931..d31590e7011b 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -122,6 +122,31 @@ static int __init amba_init(void)
postcore_initcall(amba_init);
+static int amba_get_enable_pclk(struct amba_device *pcdev)
+{
+ struct clk *pclk = clk_get(&pcdev->dev, "apb_pclk");
+ int ret;
+
+ pcdev->pclk = pclk;
+
+ if (IS_ERR(pclk))
+ return PTR_ERR(pclk);
+
+ ret = clk_enable(pclk);
+ if (ret)
+ clk_put(pclk);
+
+ return ret;
+}
+
+static void amba_put_disable_pclk(struct amba_device *pcdev)
+{
+ struct clk *pclk = pcdev->pclk;
+
+ clk_disable(pclk);
+ clk_put(pclk);
+}
+
/*
* These are the device model conversion veneers; they convert the
* device model structures to our more specific structures.
@@ -130,17 +155,33 @@ static int amba_probe(struct device *dev)
{
struct amba_device *pcdev = to_amba_device(dev);
struct amba_driver *pcdrv = to_amba_driver(dev->driver);
- struct amba_id *id;
+ struct amba_id *id = amba_lookup(pcdrv->id_table, pcdev);
+ int ret;
- id = amba_lookup(pcdrv->id_table, pcdev);
+ do {
+ ret = amba_get_enable_pclk(pcdev);
+ if (ret)
+ break;
+
+ ret = pcdrv->probe(pcdev, id);
+ if (ret == 0)
+ break;
- return pcdrv->probe(pcdev, id);
+ amba_put_disable_pclk(pcdev);
+ } while (0);
+
+ return ret;
}
static int amba_remove(struct device *dev)
{
+ struct amba_device *pcdev = to_amba_device(dev);
struct amba_driver *drv = to_amba_driver(dev->driver);
- return drv->remove(to_amba_device(dev));
+ int ret = drv->remove(pcdev);
+
+ amba_put_disable_pclk(pcdev);
+
+ return ret;
}
static void amba_shutdown(struct device *dev)
@@ -203,7 +244,6 @@ static void amba_device_release(struct device *dev)
*/
int amba_device_register(struct amba_device *dev, struct resource *parent)
{
- u32 pid, cid;
u32 size;
void __iomem *tmp;
int i, ret;
@@ -241,25 +281,35 @@ int amba_device_register(struct amba_device *dev, struct resource *parent)
goto err_release;
}
- /*
- * Read pid and cid based on size of resource
- * they are located at end of region
- */
- for (pid = 0, i = 0; i < 4; i++)
- pid |= (readl(tmp + size - 0x20 + 4 * i) & 255) << (i * 8);
- for (cid = 0, i = 0; i < 4; i++)
- cid |= (readl(tmp + size - 0x10 + 4 * i) & 255) << (i * 8);
+ ret = amba_get_enable_pclk(dev);
+ if (ret == 0) {
+ u32 pid, cid;
- iounmap(tmp);
+ /*
+ * Read pid and cid based on size of resource
+ * they are located at end of region
+ */
+ for (pid = 0, i = 0; i < 4; i++)
+ pid |= (readl(tmp + size - 0x20 + 4 * i) & 255) <<
+ (i * 8);
+ for (cid = 0, i = 0; i < 4; i++)
+ cid |= (readl(tmp + size - 0x10 + 4 * i) & 255) <<
+ (i * 8);
- if (cid == 0xb105f00d)
- dev->periphid = pid;
+ amba_put_disable_pclk(dev);
- if (!dev->periphid) {
- ret = -ENODEV;
- goto err_release;
+ if (cid == 0xb105f00d)
+ dev->periphid = pid;
+
+ if (!dev->periphid)
+ ret = -ENODEV;
}
+ iounmap(tmp);
+
+ if (ret)
+ goto err_release;
+
ret = device_add(&dev->dev);
if (ret)
goto err_release;
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index ee568c8fcbd0..5005990f751f 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -232,7 +232,7 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc)
desc->chip->unmask(irq);
}
-static int __init pl061_probe(struct amba_device *dev, struct amba_id *id)
+static int pl061_probe(struct amba_device *dev, struct amba_id *id)
{
struct pl061_platform_data *pdata;
struct pl061_gpio *chip;
@@ -333,7 +333,7 @@ free_mem:
return ret;
}
-static struct amba_id pl061_ids[] __initdata = {
+static struct amba_id pl061_ids[] = {
{
.id = 0x00041061,
.mask = 0x000fffff,
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 26386a92f5aa..9b089dfb173e 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -353,6 +353,16 @@ config VMWARE_BALLOON
To compile this driver as a module, choose M here: the
module will be called vmware_balloon.
+config ARM_CHARLCD
+ bool "ARM Ltd. Character LCD Driver"
+ depends on PLAT_VERSATILE
+ help
+ This is a driver for the character LCD found on the ARM Ltd.
+ Versatile and RealView Platform Baseboards. It doesn't do
+ very much more than display the text "ARM Linux" on the first
+ line and the Linux version on the second line, but that's
+ still useful.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 6ed06a19474a..67552d6e9327 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -31,3 +31,4 @@ obj-$(CONFIG_IWMC3200TOP) += iwmc3200top/
obj-y += eeprom/
obj-y += cb710/
obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o
+obj-$(CONFIG_ARM_CHARLCD) += arm-charlcd.o
diff --git a/drivers/misc/arm-charlcd.c b/drivers/misc/arm-charlcd.c
new file mode 100644
index 000000000000..9e3879ef58f2
--- /dev/null
+++ b/drivers/misc/arm-charlcd.c
@@ -0,0 +1,396 @@
+/*
+ * Driver for the on-board character LCD found on some ARM reference boards
+ * This is basically an Hitachi HD44780 LCD with a custom IP block to drive it
+ * http://en.wikipedia.org/wiki/HD44780_Character_LCD
+ * Currently it will just display the text "ARM Linux" and the linux version
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ * Author: Linus Walleij <triad@df.lth.se>
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <generated/utsrelease.h>
+
+#define DRIVERNAME "arm-charlcd"
+#define CHARLCD_TIMEOUT (msecs_to_jiffies(1000))
+
+/* Offsets to registers */
+#define CHAR_COM 0x00U
+#define CHAR_DAT 0x04U
+#define CHAR_RD 0x08U
+#define CHAR_RAW 0x0CU
+#define CHAR_MASK 0x10U
+#define CHAR_STAT 0x14U
+
+#define CHAR_RAW_CLEAR 0x00000000U
+#define CHAR_RAW_VALID 0x00000100U
+
+/* Hitachi HD44780 display commands */
+#define HD_CLEAR 0x01U
+#define HD_HOME 0x02U
+#define HD_ENTRYMODE 0x04U
+#define HD_ENTRYMODE_INCREMENT 0x02U
+#define HD_ENTRYMODE_SHIFT 0x01U
+#define HD_DISPCTRL 0x08U
+#define HD_DISPCTRL_ON 0x04U
+#define HD_DISPCTRL_CURSOR_ON 0x02U
+#define HD_DISPCTRL_CURSOR_BLINK 0x01U
+#define HD_CRSR_SHIFT 0x10U
+#define HD_CRSR_SHIFT_DISPLAY 0x08U
+#define HD_CRSR_SHIFT_DISPLAY_RIGHT 0x04U
+#define HD_FUNCSET 0x20U
+#define HD_FUNCSET_8BIT 0x10U
+#define HD_FUNCSET_2_LINES 0x08U
+#define HD_FUNCSET_FONT_5X10 0x04U
+#define HD_SET_CGRAM 0x40U
+#define HD_SET_DDRAM 0x80U
+#define HD_BUSY_FLAG 0x80U
+
+/**
+ * @dev: a pointer back to containing device
+ * @phybase: the offset to the controller in physical memory
+ * @physize: the size of the physical page
+ * @virtbase: the offset to the controller in virtual memory
+ * @irq: reserved interrupt number
+ * @complete: completion structure for the last LCD command
+ */
+struct charlcd {
+ struct device *dev;
+ u32 phybase;
+ u32 physize;
+ void __iomem *virtbase;
+ int irq;
+ struct completion complete;
+ struct delayed_work init_work;
+};
+
+static irqreturn_t charlcd_interrupt(int irq, void *data)
+{
+ struct charlcd *lcd = data;
+ u8 status;
+
+ status = readl(lcd->virtbase + CHAR_STAT) & 0x01;
+ /* Clear IRQ */
+ writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
+ if (status)
+ complete(&lcd->complete);
+ else
+ dev_info(lcd->dev, "Spurious IRQ (%02x)\n", status);
+ return IRQ_HANDLED;
+}
+
+
+static void charlcd_wait_complete_irq(struct charlcd *lcd)
+{
+ int ret;
+
+ ret = wait_for_completion_interruptible_timeout(&lcd->complete,
+ CHARLCD_TIMEOUT);
+ /* Disable IRQ after completion */
+ writel(0x00, lcd->virtbase + CHAR_MASK);
+
+ if (ret < 0) {
+ dev_err(lcd->dev,
+ "wait_for_completion_interruptible_timeout() "
+ "returned %d waiting for ready\n", ret);
+ return;
+ }
+
+ if (ret == 0) {
+ dev_err(lcd->dev, "charlcd controller timed out "
+ "waiting for ready\n");
+ return;
+ }
+}
+
+static u8 charlcd_4bit_read_char(struct charlcd *lcd)
+{
+ u8 data;
+ u32 val;
+ int i;
+
+ /* If we can, use an IRQ to wait for the data, else poll */
+ if (lcd->irq >= 0)
+ charlcd_wait_complete_irq(lcd);
+ else {
+ i = 0;
+ val = 0;
+ while (!(val & CHAR_RAW_VALID) && i < 10) {
+ udelay(100);
+ val = readl(lcd->virtbase + CHAR_RAW);
+ i++;
+ }
+
+ writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
+ }
+ msleep(1);
+
+ /* Read the 4 high bits of the data */
+ data = readl(lcd->virtbase + CHAR_RD) & 0xf0;
+
+ /*
+ * The second read for the low bits does not trigger an IRQ
+ * so in this case we have to poll for the 4 lower bits
+ */
+ i = 0;
+ val = 0;
+ while (!(val & CHAR_RAW_VALID) && i < 10) {
+ udelay(100);
+ val = readl(lcd->virtbase + CHAR_RAW);
+ i++;
+ }
+ writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
+ msleep(1);
+
+ /* Read the 4 low bits of the data */
+ data |= (readl(lcd->virtbase + CHAR_RD) >> 4) & 0x0f;
+
+ return data;
+}
+
+static bool charlcd_4bit_read_bf(struct charlcd *lcd)
+{
+ if (lcd->irq >= 0) {
+ /*
+ * If we'll use IRQs to wait for the busyflag, clear any
+ * pending flag and enable IRQ
+ */
+ writel(CHAR_RAW_CLEAR, lcd->virtbase + CHAR_RAW);
+ init_completion(&lcd->complete);
+ writel(0x01, lcd->virtbase + CHAR_MASK);
+ }
+ readl(lcd->virtbase + CHAR_COM);
+ return charlcd_4bit_read_char(lcd) & HD_BUSY_FLAG ? true : false;
+}
+
+static void charlcd_4bit_wait_busy(struct charlcd *lcd)
+{
+ int retries = 50;
+
+ udelay(100);
+ while (charlcd_4bit_read_bf(lcd) && retries)
+ retries--;
+ if (!retries)
+ dev_err(lcd->dev, "timeout waiting for busyflag\n");
+}
+
+static void charlcd_4bit_command(struct charlcd *lcd, u8 cmd)
+{
+ u32 cmdlo = (cmd << 4) & 0xf0;
+ u32 cmdhi = (cmd & 0xf0);
+
+ writel(cmdhi, lcd->virtbase + CHAR_COM);
+ udelay(10);
+ writel(cmdlo, lcd->virtbase + CHAR_COM);
+ charlcd_4bit_wait_busy(lcd);
+}
+
+static void charlcd_4bit_char(struct charlcd *lcd, u8 ch)
+{
+ u32 chlo = (ch << 4) & 0xf0;
+ u32 chhi = (ch & 0xf0);
+
+ writel(chhi, lcd->virtbase + CHAR_DAT);
+ udelay(10);
+ writel(chlo, lcd->virtbase + CHAR_DAT);
+ charlcd_4bit_wait_busy(lcd);
+}
+
+static void charlcd_4bit_print(struct charlcd *lcd, int line, const char *str)
+{
+ u8 offset;
+ int i;
+
+ /*
+ * We support line 0, 1
+ * Line 1 runs from 0x00..0x27
+ * Line 2 runs from 0x28..0x4f
+ */
+ if (line == 0)
+ offset = 0;
+ else if (line == 1)
+ offset = 0x28;
+ else
+ return;
+
+ /* Set offset */
+ charlcd_4bit_command(lcd, HD_SET_DDRAM | offset);
+
+ /* Send string */
+ for (i = 0; i < strlen(str) && i < 0x28; i++)
+ charlcd_4bit_char(lcd, str[i]);
+}
+
+static void charlcd_4bit_init(struct charlcd *lcd)
+{
+ /* These commands cannot be checked with the busy flag */
+ writel(HD_FUNCSET | HD_FUNCSET_8BIT, lcd->virtbase + CHAR_COM);
+ msleep(5);
+ writel(HD_FUNCSET | HD_FUNCSET_8BIT, lcd->virtbase + CHAR_COM);
+ udelay(100);
+ writel(HD_FUNCSET | HD_FUNCSET_8BIT, lcd->virtbase + CHAR_COM);
+ udelay(100);
+ /* Go to 4bit mode */
+ writel(HD_FUNCSET, lcd->virtbase + CHAR_COM);
+ udelay(100);
+ /*
+ * 4bit mode, 2 lines, 5x8 font, after this the number of lines
+ * and the font cannot be changed until the next initialization sequence
+ */
+ charlcd_4bit_command(lcd, HD_FUNCSET | HD_FUNCSET_2_LINES);
+ charlcd_4bit_command(lcd, HD_DISPCTRL | HD_DISPCTRL_ON);
+ charlcd_4bit_command(lcd, HD_ENTRYMODE | HD_ENTRYMODE_INCREMENT);
+ charlcd_4bit_command(lcd, HD_CLEAR);
+ charlcd_4bit_command(lcd, HD_HOME);
+ /* Put something useful in the display */
+ charlcd_4bit_print(lcd, 0, "ARM Linux");
+ charlcd_4bit_print(lcd, 1, UTS_RELEASE);
+}
+
+static void charlcd_init_work(struct work_struct *work)
+{
+ struct charlcd *lcd =
+ container_of(work, struct charlcd, init_work.work);
+
+ charlcd_4bit_init(lcd);
+}
+
+static int __init charlcd_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct charlcd *lcd;
+ struct resource *res;
+
+ lcd = kzalloc(sizeof(struct charlcd), GFP_KERNEL);
+ if (!lcd)
+ return -ENOMEM;
+
+ lcd->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ ret = -ENOENT;
+ goto out_no_resource;
+ }
+ lcd->phybase = res->start;
+ lcd->physize = resource_size(res);
+
+ if (request_mem_region(lcd->phybase, lcd->physize,
+ DRIVERNAME) == NULL) {
+ ret = -EBUSY;
+ goto out_no_memregion;
+ }
+
+ lcd->virtbase = ioremap(lcd->phybase, lcd->physize);
+ if (!lcd->virtbase) {
+ ret = -ENOMEM;
+ goto out_no_remap;
+ }
+
+ lcd->irq = platform_get_irq(pdev, 0);
+ /* If no IRQ is supplied, we'll survive without it */
+ if (lcd->irq >= 0) {
+ if (request_irq(lcd->irq, charlcd_interrupt, IRQF_DISABLED,
+ DRIVERNAME, lcd)) {
+ ret = -EIO;
+ goto out_no_irq;
+ }
+ }
+
+ platform_set_drvdata(pdev, lcd);
+
+ /*
+ * Initialize the display in a delayed work, because
+ * it is VERY slow and would slow down the boot of the system.
+ */
+ INIT_DELAYED_WORK(&lcd->init_work, charlcd_init_work);
+ schedule_delayed_work(&lcd->init_work, 0);
+
+ dev_info(&pdev->dev, "initalized ARM character LCD at %08x\n",
+ lcd->phybase);
+
+ return 0;
+
+out_no_irq:
+ iounmap(lcd->virtbase);
+out_no_remap:
+ platform_set_drvdata(pdev, NULL);
+out_no_memregion:
+ release_mem_region(lcd->phybase, SZ_4K);
+out_no_resource:
+ kfree(lcd);
+ return ret;
+}
+
+static int __exit charlcd_remove(struct platform_device *pdev)
+{
+ struct charlcd *lcd = platform_get_drvdata(pdev);
+
+ if (lcd) {
+ free_irq(lcd->irq, lcd);
+ iounmap(lcd->virtbase);
+ release_mem_region(lcd->phybase, lcd->physize);
+ platform_set_drvdata(pdev, NULL);
+ kfree(lcd);
+ }
+
+ return 0;
+}
+
+static int charlcd_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct charlcd *lcd = platform_get_drvdata(pdev);
+
+ /* Power the display off */
+ charlcd_4bit_command(lcd, HD_DISPCTRL);
+ return 0;
+}
+
+static int charlcd_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct charlcd *lcd = platform_get_drvdata(pdev);
+
+ /* Turn the display back on */
+ charlcd_4bit_command(lcd, HD_DISPCTRL | HD_DISPCTRL_ON);
+ return 0;
+}
+
+static const struct dev_pm_ops charlcd_pm_ops = {
+ .suspend = charlcd_suspend,
+ .resume = charlcd_resume,
+};
+
+static struct platform_driver charlcd_driver = {
+ .driver = {
+ .name = DRIVERNAME,
+ .owner = THIS_MODULE,
+ .pm = &charlcd_pm_ops,
+ },
+ .remove = __exit_p(charlcd_remove),
+};
+
+static int __init charlcd_init(void)
+{
+ return platform_driver_probe(&charlcd_driver, charlcd_probe);
+}
+
+static void __exit charlcd_exit(void)
+{
+ platform_driver_unregister(&charlcd_driver);
+}
+
+module_init(charlcd_init);
+module_exit(charlcd_exit);
+
+MODULE_AUTHOR("Linus Walleij <triad@df.lth.se>");
+MODULE_DESCRIPTION("ARM Character LCD Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 4917af96bae1..7edae83603dd 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -26,7 +26,6 @@
#include <linux/amba/mmci.h>
#include <linux/regulator/consumer.h>
-#include <asm/cacheflush.h>
#include <asm/div64.h>
#include <asm/io.h>
#include <asm/sizes.h>
@@ -37,12 +36,39 @@
static unsigned int fmax = 515633;
+/**
+ * struct variant_data - MMCI variant-specific quirks
+ * @clkreg: default value for MCICLOCK register
+ * @clkreg_enable: enable value for MMCICLOCK register
+ * @datalength_bits: number of bits in the MMCIDATALENGTH register
+ */
+struct variant_data {
+ unsigned int clkreg;
+ unsigned int clkreg_enable;
+ unsigned int datalength_bits;
+};
+
+static struct variant_data variant_arm = {
+ .datalength_bits = 16,
+};
+
+static struct variant_data variant_u300 = {
+ .clkreg_enable = 1 << 13, /* HWFCEN */
+ .datalength_bits = 16,
+};
+
+static struct variant_data variant_ux500 = {
+ .clkreg = MCI_CLK_ENABLE,
+ .clkreg_enable = 1 << 14, /* HWFCEN */
+ .datalength_bits = 24,
+};
/*
* This must be called with host->lock held
*/
static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
{
- u32 clk = 0;
+ struct variant_data *variant = host->variant;
+ u32 clk = variant->clkreg;
if (desired) {
if (desired >= host->mclk) {
@@ -54,8 +80,8 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
clk = 255;
host->cclk = host->mclk / (2 * (clk + 1));
}
- if (host->hw_designer == AMBA_VENDOR_ST)
- clk |= MCI_ST_FCEN; /* Bug fix in ST IP block */
+
+ clk |= variant->clkreg_enable;
clk |= MCI_CLK_ENABLE;
/* This hasn't proven to be worthwhile */
/* clk |= MCI_CLK_PWRSAVE; */
@@ -98,6 +124,18 @@ static void mmci_stop_data(struct mmci_host *host)
host->data = NULL;
}
+static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
+{
+ unsigned int flags = SG_MITER_ATOMIC;
+
+ if (data->flags & MMC_DATA_READ)
+ flags |= SG_MITER_TO_SG;
+ else
+ flags |= SG_MITER_FROM_SG;
+
+ sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
+}
+
static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
{
unsigned int datactrl, timeout, irqmask;
@@ -109,7 +147,7 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
data->blksz, data->blocks, data->flags);
host->data = data;
- host->size = data->blksz;
+ host->size = data->blksz * data->blocks;
host->data_xfered = 0;
mmci_init_sg(host, data);
@@ -210,8 +248,17 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data,
* We hit an error condition. Ensure that any data
* partially written to a page is properly coherent.
*/
- if (host->sg_len && data->flags & MMC_DATA_READ)
- flush_dcache_page(sg_page(host->sg_ptr));
+ if (data->flags & MMC_DATA_READ) {
+ struct sg_mapping_iter *sg_miter = &host->sg_miter;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ if (sg_miter_next(sg_miter)) {
+ flush_dcache_page(sg_miter->page);
+ sg_miter_stop(sg_miter);
+ }
+ local_irq_restore(flags);
+ }
}
if (status & MCI_DATAEND) {
mmci_stop_data(host);
@@ -314,15 +361,18 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem
static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
{
struct mmci_host *host = dev_id;
+ struct sg_mapping_iter *sg_miter = &host->sg_miter;
void __iomem *base = host->base;
+ unsigned long flags;
u32 status;
status = readl(base + MMCISTATUS);
dev_dbg(mmc_dev(host->mmc), "irq1 (pio) %08x\n", status);
+ local_irq_save(flags);
+
do {
- unsigned long flags;
unsigned int remain, len;
char *buffer;
@@ -336,11 +386,11 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
if (!(status & (MCI_TXFIFOHALFEMPTY|MCI_RXDATAAVLBL)))
break;
- /*
- * Map the current scatter buffer.
- */
- buffer = mmci_kmap_atomic(host, &flags) + host->sg_off;
- remain = host->sg_ptr->length - host->sg_off;
+ if (!sg_miter_next(sg_miter))
+ break;
+
+ buffer = sg_miter->addr;
+ remain = sg_miter->length;
len = 0;
if (status & MCI_RXACTIVE)
@@ -348,31 +398,24 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id)
if (status & MCI_TXACTIVE)
len = mmci_pio_write(host, buffer, remain, status);
- /*
- * Unmap the buffer.
- */
- mmci_kunmap_atomic(host, buffer, &flags);
+ sg_miter->consumed = len;
- host->sg_off += len;
host->size -= len;
remain -= len;
if (remain)
break;
- /*
- * If we were reading, and we have completed this
- * page, ensure that the data cache is coherent.
- */
if (status & MCI_RXACTIVE)
- flush_dcache_page(sg_page(host->sg_ptr));
-
- if (!mmci_next_sg(host))
- break;
+ flush_dcache_page(sg_miter->page);
status = readl(base + MMCISTATUS);
} while (1);
+ sg_miter_stop(sg_miter);
+
+ local_irq_restore(flags);
+
/*
* If we're nearing the end of the read, switch to
* "any data available" mode.
@@ -477,16 +520,9 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
/* This implicitly enables the regulator */
mmc_regulator_set_ocr(host->vcc, ios->vdd);
#endif
- /*
- * The translate_vdd function is not used if you have
- * an external regulator, or your design is really weird.
- * Using it would mean sending in power control BOTH using
- * a regulator AND the 4 MMCIPWR bits. If we don't have
- * a regulator, we might have some other platform specific
- * power control behind this translate function.
- */
- if (!host->vcc && host->plat->translate_vdd)
- pwr |= host->plat->translate_vdd(mmc_dev(mmc), ios->vdd);
+ if (host->plat->vdd_handler)
+ pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
+ ios->power_mode);
/* The ST version does not have this, fall through to POWER_ON */
if (host->hw_designer != AMBA_VENDOR_ST) {
pwr |= MCI_PWR_UP;
@@ -551,21 +587,10 @@ static const struct mmc_host_ops mmci_ops = {
.get_cd = mmci_get_cd,
};
-static void mmci_check_status(unsigned long data)
-{
- struct mmci_host *host = (struct mmci_host *)data;
- unsigned int status = mmci_get_cd(host->mmc);
-
- if (status ^ host->oldstat)
- mmc_detect_change(host->mmc, 0);
-
- host->oldstat = status;
- mod_timer(&host->timer, jiffies + HZ);
-}
-
static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
{
struct mmci_platform_data *plat = dev->dev.platform_data;
+ struct variant_data *variant = id->data;
struct mmci_host *host;
struct mmc_host *mmc;
int ret;
@@ -609,6 +634,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
goto clk_free;
host->plat = plat;
+ host->variant = variant;
host->mclk = clk_get_rate(host->clk);
/*
* According to the spec, mclk is max 100 MHz,
@@ -669,6 +695,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
if (host->vcc == NULL)
mmc->ocr_avail = plat->ocr_mask;
mmc->caps = plat->capabilities;
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
/*
* We can do SGIO
@@ -677,10 +704,11 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
mmc->max_phys_segs = NR_SG;
/*
- * Since we only have a 16-bit data length register, we must
- * ensure that we don't exceed 2^16-1 bytes in a single request.
+ * Since only a certain number of bits are valid in the data length
+ * register, we must ensure that we don't exceed 2^num-1 bytes in a
+ * single request.
*/
- mmc->max_req_size = 65535;
+ mmc->max_req_size = (1 << variant->datalength_bits) - 1;
/*
* Set the maximum segment size. Since we aren't doing DMA
@@ -734,7 +762,6 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
amba_set_drvdata(dev, mmc);
- host->oldstat = mmci_get_cd(host->mmc);
mmc_add_host(mmc);
@@ -742,12 +769,6 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
mmc_hostname(mmc), amba_rev(dev), amba_config(dev),
(unsigned long long)dev->res.start, dev->irq[0], dev->irq[1]);
- init_timer(&host->timer);
- host->timer.data = (unsigned long)host;
- host->timer.function = mmci_check_status;
- host->timer.expires = jiffies + HZ;
- add_timer(&host->timer);
-
return 0;
irq0_free:
@@ -781,8 +802,6 @@ static int __devexit mmci_remove(struct amba_device *dev)
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
- del_timer_sync(&host->timer);
-
mmc_remove_host(mmc);
writel(0, host->base + MMCIMASK0);
@@ -856,19 +875,28 @@ static struct amba_id mmci_ids[] = {
{
.id = 0x00041180,
.mask = 0x000fffff,
+ .data = &variant_arm,
},
{
.id = 0x00041181,
.mask = 0x000fffff,
+ .data = &variant_arm,
},
/* ST Micro variants */
{
.id = 0x00180180,
.mask = 0x00ffffff,
+ .data = &variant_u300,
},
{
.id = 0x00280180,
.mask = 0x00ffffff,
+ .data = &variant_u300,
+ },
+ {
+ .id = 0x00480180,
+ .mask = 0x00ffffff,
+ .data = &variant_ux500,
},
{ 0, 0 },
};
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index d77062e5e3af..68970cfb81e1 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -28,8 +28,6 @@
#define MCI_4BIT_BUS (1 << 11)
/* 8bit wide buses supported in ST Micro versions */
#define MCI_ST_8BIT_BUS (1 << 12)
-/* HW flow control on the ST Micro version */
-#define MCI_ST_FCEN (1 << 13)
#define MMCIARGUMENT 0x008
#define MMCICOMMAND 0x00c
@@ -145,6 +143,7 @@
#define NR_SG 16
struct clk;
+struct variant_data;
struct mmci_host {
void __iomem *base;
@@ -164,6 +163,7 @@ struct mmci_host {
unsigned int cclk;
u32 pwr;
struct mmci_platform_data *plat;
+ struct variant_data *variant;
u8 hw_designer;
u8 hw_revision:4;
@@ -171,42 +171,9 @@ struct mmci_host {
struct timer_list timer;
unsigned int oldstat;
- unsigned int sg_len;
-
/* pio stuff */
- struct scatterlist *sg_ptr;
- unsigned int sg_off;
+ struct sg_mapping_iter sg_miter;
unsigned int size;
struct regulator *vcc;
};
-static inline void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
-{
- /*
- * Ideally, we want the higher levels to pass us a scatter list.
- */
- host->sg_len = data->sg_len;
- host->sg_ptr = data->sg;
- host->sg_off = 0;
-}
-
-static inline int mmci_next_sg(struct mmci_host *host)
-{
- host->sg_ptr++;
- host->sg_off = 0;
- return --host->sg_len;
-}
-
-static inline char *mmci_kmap_atomic(struct mmci_host *host, unsigned long *flags)
-{
- struct scatterlist *sg = host->sg_ptr;
-
- local_irq_save(*flags);
- return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
-}
-
-static inline void mmci_kunmap_atomic(struct mmci_host *host, void *buffer, unsigned long *flags)
-{
- kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
- local_irq_restore(*flags);
-}
diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
index 7b14a67bdca2..11790990277a 100644
--- a/drivers/regulator/ab3100.c
+++ b/drivers/regulator/ab3100.c
@@ -286,7 +286,7 @@ static int ab3100_list_voltage_regulator(struct regulator_dev *reg,
{
struct ab3100_regulator *abreg = reg->reg_data;
- if (selector > abreg->voltages_len)
+ if (selector >= abreg->voltages_len)
return -EINVAL;
return abreg->typ_voltages[selector];
}
@@ -318,7 +318,7 @@ static int ab3100_get_voltage_regulator(struct regulator_dev *reg)
regval &= 0xE0;
regval >>= 5;
- if (regval > abreg->voltages_len) {
+ if (regval >= abreg->voltages_len) {
dev_err(&reg->dev,
"regulator register %02x contains an illegal voltage setting\n",
abreg->regreg);
diff --git a/drivers/regulator/tps6507x-regulator.c b/drivers/regulator/tps6507x-regulator.c
index 14b4576281c5..8152d65220f5 100644
--- a/drivers/regulator/tps6507x-regulator.c
+++ b/drivers/regulator/tps6507x-regulator.c
@@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/tps6507x.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/mfd/tps6507x.h>
@@ -101,9 +102,12 @@ struct tps_info {
unsigned max_uV;
u8 table_len;
const u16 *table;
+
+ /* Does DCDC high or the low register defines output voltage? */
+ bool defdcdc_default;
};
-static const struct tps_info tps6507x_pmic_regs[] = {
+static struct tps_info tps6507x_pmic_regs[] = {
{
.name = "VDCDC1",
.min_uV = 725000,
@@ -145,7 +149,7 @@ struct tps6507x_pmic {
struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
struct tps6507x_dev *mfd;
struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
- const struct tps_info *info[TPS6507X_NUM_REGULATOR];
+ struct tps_info *info[TPS6507X_NUM_REGULATOR];
struct mutex io_lock;
};
static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
@@ -341,10 +345,16 @@ static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
reg = TPS6507X_REG_DEFDCDC1;
break;
case TPS6507X_DCDC_2:
- reg = TPS6507X_REG_DEFDCDC2_LOW;
+ if (tps->info[dcdc]->defdcdc_default)
+ reg = TPS6507X_REG_DEFDCDC2_HIGH;
+ else
+ reg = TPS6507X_REG_DEFDCDC2_LOW;
break;
case TPS6507X_DCDC_3:
- reg = TPS6507X_REG_DEFDCDC3_LOW;
+ if (tps->info[dcdc]->defdcdc_default)
+ reg = TPS6507X_REG_DEFDCDC3_HIGH;
+ else
+ reg = TPS6507X_REG_DEFDCDC3_LOW;
break;
default:
return -EINVAL;
@@ -370,10 +380,16 @@ static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
reg = TPS6507X_REG_DEFDCDC1;
break;
case TPS6507X_DCDC_2:
- reg = TPS6507X_REG_DEFDCDC2_LOW;
+ if (tps->info[dcdc]->defdcdc_default)
+ reg = TPS6507X_REG_DEFDCDC2_HIGH;
+ else
+ reg = TPS6507X_REG_DEFDCDC2_LOW;
break;
case TPS6507X_DCDC_3:
- reg = TPS6507X_REG_DEFDCDC3_LOW;
+ if (tps->info[dcdc]->defdcdc_default)
+ reg = TPS6507X_REG_DEFDCDC3_HIGH;
+ else
+ reg = TPS6507X_REG_DEFDCDC3_LOW;
break;
default:
return -EINVAL;
@@ -532,7 +548,7 @@ int tps6507x_pmic_probe(struct platform_device *pdev)
{
struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
static int desc_id;
- const struct tps_info *info = &tps6507x_pmic_regs[0];
+ struct tps_info *info = &tps6507x_pmic_regs[0];
struct regulator_init_data *init_data;
struct regulator_dev *rdev;
struct tps6507x_pmic *tps;
@@ -569,6 +585,12 @@ int tps6507x_pmic_probe(struct platform_device *pdev)
for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
/* Register the regulators */
tps->info[i] = info;
+ if (init_data->driver_data) {
+ struct tps6507x_reg_platform_data *data =
+ init_data->driver_data;
+ tps->info[i]->defdcdc_default = data->defdcdc_default;
+ }
+
tps->desc[i].name = info->name;
tps->desc[i].id = desc_id++;
tps->desc[i].n_voltages = num_voltages[i];
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c
index 723cd1fb4867..0e6ed7db9364 100644
--- a/drivers/regulator/wm8350-regulator.c
+++ b/drivers/regulator/wm8350-regulator.c
@@ -1495,7 +1495,7 @@ int wm8350_register_regulator(struct wm8350 *wm8350, int reg,
if (ret != 0) {
dev_err(wm8350->dev, "Failed to register regulator %d: %d\n",
reg, ret);
- platform_device_del(pdev);
+ platform_device_put(pdev);
wm8350->pmic.pdev[reg] = NULL;
}
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 3587d9922f28..71bbefc3544e 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -456,7 +456,7 @@ static struct rtc_class_ops stv2_pl031_ops = {
.irq_set_freq = pl031_irq_set_freq,
};
-static struct amba_id pl031_ids[] __initdata = {
+static struct amba_id pl031_ids[] = {
{
.id = 0x00041031,
.mask = 0x000fffff,
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index e3dbeda97179..fd068bc1bd0a 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -714,6 +714,14 @@ static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *act)
if (zfcp_erp_adapter_strategy_open_fsf_xport(act) == ZFCP_ERP_FAILED)
return ZFCP_ERP_FAILED;
+ if (mempool_resize(act->adapter->pool.status_read_data,
+ act->adapter->stat_read_buf_num, GFP_KERNEL))
+ return ZFCP_ERP_FAILED;
+
+ if (mempool_resize(act->adapter->pool.status_read_req,
+ act->adapter->stat_read_buf_num, GFP_KERNEL))
+ return ZFCP_ERP_FAILED;
+
atomic_set(&act->adapter->stat_miss, act->adapter->stat_read_buf_num);
if (zfcp_status_read_refill(act->adapter))
return ZFCP_ERP_FAILED;
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 9ac6a6e4a604..71663fb77310 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -496,7 +496,8 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
adapter->hydra_version = bottom->adapter_type;
adapter->timer_ticks = bottom->timer_interval;
- adapter->stat_read_buf_num = max(bottom->status_read_buf_num, (u16)16);
+ adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
+ (u16)FSF_STATUS_READS_RECOM);
if (fc_host_permanent_port_name(shost) == -1)
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
@@ -719,11 +720,6 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
req->qtcb, sizeof(struct fsf_qtcb));
- if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
- zfcp_fsf_req_free(req);
- return ERR_PTR(-EIO);
- }
-
return req;
}
@@ -981,7 +977,7 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
}
/* use single, unchained SBAL if it can hold the request */
- if (zfcp_qdio_sg_one_sbale(sg_req) || zfcp_qdio_sg_one_sbale(sg_resp)) {
+ if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
sg_req, sg_resp);
return 0;
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 28117e130e2c..6fa5e0453176 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -251,7 +251,8 @@ static int zfcp_qdio_sbal_check(struct zfcp_qdio *qdio)
struct zfcp_qdio_queue *req_q = &qdio->req_q;
spin_lock_bh(&qdio->req_q_lock);
- if (atomic_read(&req_q->count))
+ if (atomic_read(&req_q->count) ||
+ !(atomic_read(&qdio->adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP))
return 1;
spin_unlock_bh(&qdio->req_q_lock);
return 0;
@@ -274,8 +275,13 @@ int zfcp_qdio_sbal_get(struct zfcp_qdio *qdio)
spin_unlock_bh(&qdio->req_q_lock);
ret = wait_event_interruptible_timeout(qdio->req_q_wq,
zfcp_qdio_sbal_check(qdio), 5 * HZ);
+
+ if (!(atomic_read(&qdio->adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP))
+ return -EIO;
+
if (ret > 0)
return 0;
+
if (!ret) {
atomic_inc(&qdio->req_q_full);
/* assume hanging outbound queue, try queue recovery */
@@ -375,6 +381,8 @@ void zfcp_qdio_close(struct zfcp_qdio *qdio)
atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &qdio->adapter->status);
spin_unlock_bh(&qdio->req_q_lock);
+ wake_up(&qdio->req_q_wq);
+
qdio_shutdown(qdio->adapter->ccw_device,
QDIO_FLAG_CLEANUP_USING_CLEAR);
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
index a864ccc0a342..989b9a8ba72d 100644
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c
@@ -277,6 +277,12 @@ static int rpavscsi_init_crq_queue(struct crq_queue *queue,
goto reg_crq_failed;
}
+ queue->cur = 0;
+ spin_lock_init(&queue->lock);
+
+ tasklet_init(&hostdata->srp_task, (void *)rpavscsi_task,
+ (unsigned long)hostdata);
+
if (request_irq(vdev->irq,
rpavscsi_handle_event,
0, "ibmvscsi", (void *)hostdata) != 0) {
@@ -291,15 +297,10 @@ static int rpavscsi_init_crq_queue(struct crq_queue *queue,
goto req_irq_failed;
}
- queue->cur = 0;
- spin_lock_init(&queue->lock);
-
- tasklet_init(&hostdata->srp_task, (void *)rpavscsi_task,
- (unsigned long)hostdata);
-
return retrc;
req_irq_failed:
+ tasklet_kill(&hostdata->srp_task);
do {
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 82ea4a8226b0..f820cffb7f00 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -1129,20 +1129,22 @@ static int ipr_is_same_device(struct ipr_resource_entry *res,
}
/**
- * ipr_format_resource_path - Format the resource path for printing.
+ * ipr_format_res_path - Format the resource path for printing.
* @res_path: resource path
* @buf: buffer
*
* Return value:
* pointer to buffer
**/
-static char *ipr_format_resource_path(u8 *res_path, char *buffer)
+static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
{
int i;
+ char *p = buffer;
- sprintf(buffer, "%02X", res_path[0]);
- for (i=1; res_path[i] != 0xff; i++)
- sprintf(buffer, "%s-%02X", buffer, res_path[i]);
+ res_path[0] = '\0';
+ p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
+ for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
+ p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
return buffer;
}
@@ -1187,7 +1189,8 @@ static void ipr_update_res_entry(struct ipr_resource_entry *res,
if (res->sdev && new_path)
sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
- ipr_format_resource_path(&res->res_path[0], &buffer[0]));
+ ipr_format_res_path(res->res_path, buffer,
+ sizeof(buffer)));
} else {
res->flags = cfgtew->u.cfgte->flags;
if (res->flags & IPR_IS_IOA_RESOURCE)
@@ -1573,7 +1576,8 @@ static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
ipr_err_separator;
ipr_err("Device %d : %s", i + 1,
- ipr_format_resource_path(&dev_entry->res_path[0], &buffer[0]));
+ ipr_format_res_path(dev_entry->res_path, buffer,
+ sizeof(buffer)));
ipr_log_ext_vpd(&dev_entry->vpd);
ipr_err("-----New Device Information-----\n");
@@ -1919,13 +1923,14 @@ static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
path_active_desc[i].desc, path_state_desc[j].desc,
- ipr_format_resource_path(&fabric->res_path[0], &buffer[0]));
+ ipr_format_res_path(fabric->res_path, buffer,
+ sizeof(buffer)));
return;
}
}
ipr_err("Path state=%02X Resource Path=%s\n", path_state,
- ipr_format_resource_path(&fabric->res_path[0], &buffer[0]));
+ ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
}
static const struct {
@@ -2066,7 +2071,8 @@ static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
path_status_desc[j].desc, path_type_desc[i].desc,
- ipr_format_resource_path(&cfg->res_path[0], &buffer[0]),
+ ipr_format_res_path(cfg->res_path, buffer,
+ sizeof(buffer)),
link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
return;
@@ -2074,7 +2080,7 @@ static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
}
ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
"WWN=%08X%08X\n", cfg->type_status,
- ipr_format_resource_path(&cfg->res_path[0], &buffer[0]),
+ ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
}
@@ -2139,7 +2145,7 @@ static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
ipr_err("RAID %s Array Configuration: %s\n",
error->protection_level,
- ipr_format_resource_path(&error->last_res_path[0], &buffer[0]));
+ ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
ipr_err_separator;
@@ -2160,9 +2166,11 @@ static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
ipr_err("Array Member %d:\n", i);
ipr_log_ext_vpd(&array_entry->vpd);
ipr_err("Current Location: %s",
- ipr_format_resource_path(&array_entry->res_path[0], &buffer[0]));
+ ipr_format_res_path(array_entry->res_path, buffer,
+ sizeof(buffer)));
ipr_err("Expected Location: %s",
- ipr_format_resource_path(&array_entry->expected_res_path[0], &buffer[0]));
+ ipr_format_res_path(array_entry->expected_res_path,
+ buffer, sizeof(buffer)));
ipr_err_separator;
}
@@ -4079,7 +4087,8 @@ static struct device_attribute ipr_adapter_handle_attr = {
};
/**
- * ipr_show_resource_path - Show the resource path for this device.
+ * ipr_show_resource_path - Show the resource path or the resource address for
+ * this device.
* @dev: device struct
* @buf: buffer
*
@@ -4097,9 +4106,14 @@ static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribut
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
res = (struct ipr_resource_entry *)sdev->hostdata;
- if (res)
+ if (res && ioa_cfg->sis64)
len = snprintf(buf, PAGE_SIZE, "%s\n",
- ipr_format_resource_path(&res->res_path[0], &buffer[0]));
+ ipr_format_res_path(res->res_path, buffer,
+ sizeof(buffer)));
+ else if (res)
+ len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
+ res->bus, res->target, res->lun);
+
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
return len;
}
@@ -4351,7 +4365,8 @@ static int ipr_slave_configure(struct scsi_device *sdev)
scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
if (ioa_cfg->sis64)
sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
- ipr_format_resource_path(&res->res_path[0], &buffer[0]));
+ ipr_format_res_path(res->res_path, buffer,
+ sizeof(buffer)));
return 0;
}
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h
index 9ecd2259eb39..b965f3587c9d 100644
--- a/drivers/scsi/ipr.h
+++ b/drivers/scsi/ipr.h
@@ -1684,8 +1684,9 @@ struct ipr_ucode_image_header {
if (ipr_is_device(hostrcb)) { \
if ((hostrcb)->ioa_cfg->sis64) { \
printk(KERN_ERR IPR_NAME ": %s: " fmt, \
- ipr_format_resource_path(&hostrcb->hcam.u.error64.fd_res_path[0], \
- &hostrcb->rp_buffer[0]), \
+ ipr_format_res_path(hostrcb->hcam.u.error64.fd_res_path, \
+ hostrcb->rp_buffer, \
+ sizeof(hostrcb->rp_buffer)), \
__VA_ARGS__); \
} else { \
ipr_ra_err((hostrcb)->ioa_cfg, \
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index b09a638d051f..50441ffe8e38 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -782,7 +782,7 @@ static int pl010_resume(struct amba_device *dev)
return 0;
}
-static struct amba_id pl010_ids[] __initdata = {
+static struct amba_id pl010_ids[] = {
{
.id = 0x00041010,
.mask = 0x000fffff,
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index eb4cb480b93e..6ca7a44f29c2 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -69,9 +69,12 @@
struct uart_amba_port {
struct uart_port port;
struct clk *clk;
- unsigned int im; /* interrupt mask */
+ unsigned int im; /* interrupt mask */
unsigned int old_status;
- unsigned int ifls; /* vendor-specific */
+ unsigned int ifls; /* vendor-specific */
+ unsigned int lcrh_tx; /* vendor-specific */
+ unsigned int lcrh_rx; /* vendor-specific */
+ bool oversampling; /* vendor-specific */
bool autorts;
};
@@ -79,16 +82,25 @@ struct uart_amba_port {
struct vendor_data {
unsigned int ifls;
unsigned int fifosize;
+ unsigned int lcrh_tx;
+ unsigned int lcrh_rx;
+ bool oversampling;
};
static struct vendor_data vendor_arm = {
.ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8,
.fifosize = 16,
+ .lcrh_tx = UART011_LCRH,
+ .lcrh_rx = UART011_LCRH,
+ .oversampling = false,
};
static struct vendor_data vendor_st = {
.ifls = UART011_IFLS_RX_HALF|UART011_IFLS_TX_HALF,
.fifosize = 64,
+ .lcrh_tx = ST_UART011_LCRH_TX,
+ .lcrh_rx = ST_UART011_LCRH_RX,
+ .oversampling = true,
};
static void pl011_stop_tx(struct uart_port *port)
@@ -327,12 +339,12 @@ static void pl011_break_ctl(struct uart_port *port, int break_state)
unsigned int lcr_h;
spin_lock_irqsave(&uap->port.lock, flags);
- lcr_h = readw(uap->port.membase + UART011_LCRH);
+ lcr_h = readw(uap->port.membase + uap->lcrh_tx);
if (break_state == -1)
lcr_h |= UART01x_LCRH_BRK;
else
lcr_h &= ~UART01x_LCRH_BRK;
- writew(lcr_h, uap->port.membase + UART011_LCRH);
+ writew(lcr_h, uap->port.membase + uap->lcrh_tx);
spin_unlock_irqrestore(&uap->port.lock, flags);
}
@@ -393,7 +405,17 @@ static int pl011_startup(struct uart_port *port)
writew(cr, uap->port.membase + UART011_CR);
writew(0, uap->port.membase + UART011_FBRD);
writew(1, uap->port.membase + UART011_IBRD);
- writew(0, uap->port.membase + UART011_LCRH);
+ writew(0, uap->port.membase + uap->lcrh_rx);
+ if (uap->lcrh_tx != uap->lcrh_rx) {
+ int i;
+ /*
+ * Wait 10 PCLKs before writing LCRH_TX register,
+ * to get this delay write read only register 10 times
+ */
+ for (i = 0; i < 10; ++i)
+ writew(0xff, uap->port.membase + UART011_MIS);
+ writew(0, uap->port.membase + uap->lcrh_tx);
+ }
writew(0, uap->port.membase + UART01x_DR);
while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY)
barrier();
@@ -422,10 +444,19 @@ static int pl011_startup(struct uart_port *port)
return retval;
}
+static void pl011_shutdown_channel(struct uart_amba_port *uap,
+ unsigned int lcrh)
+{
+ unsigned long val;
+
+ val = readw(uap->port.membase + lcrh);
+ val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN);
+ writew(val, uap->port.membase + lcrh);
+}
+
static void pl011_shutdown(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned long val;
/*
* disable all interrupts
@@ -450,9 +481,9 @@ static void pl011_shutdown(struct uart_port *port)
/*
* disable break condition and fifos
*/
- val = readw(uap->port.membase + UART011_LCRH);
- val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN);
- writew(val, uap->port.membase + UART011_LCRH);
+ pl011_shutdown_channel(uap, uap->lcrh_rx);
+ if (uap->lcrh_rx != uap->lcrh_tx)
+ pl011_shutdown_channel(uap, uap->lcrh_tx);
/*
* Shut down the clock producer
@@ -472,8 +503,13 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
/*
* Ask the core to calculate the divisor for us.
*/
- baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
- quot = port->uartclk * 4 / baud;
+ baud = uart_get_baud_rate(port, termios, old, 0,
+ port->uartclk/(uap->oversampling ? 8 : 16));
+
+ if (baud > port->uartclk/16)
+ quot = DIV_ROUND_CLOSEST(port->uartclk * 8, baud);
+ else
+ quot = DIV_ROUND_CLOSEST(port->uartclk * 4, baud);
switch (termios->c_cflag & CSIZE) {
case CS5:
@@ -552,6 +588,13 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
uap->autorts = false;
}
+ if (uap->oversampling) {
+ if (baud > port->uartclk/16)
+ old_cr |= ST_UART011_CR_OVSFACT;
+ else
+ old_cr &= ~ST_UART011_CR_OVSFACT;
+ }
+
/* Set baud rate */
writew(quot & 0x3f, port->membase + UART011_FBRD);
writew(quot >> 6, port->membase + UART011_IBRD);
@@ -561,7 +604,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
* NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
* ----------^----------^----------^----------^-----
*/
- writew(lcr_h, port->membase + UART011_LCRH);
+ writew(lcr_h, port->membase + uap->lcrh_rx);
+ if (uap->lcrh_rx != uap->lcrh_tx) {
+ int i;
+ /*
+ * Wait 10 PCLKs before writing LCRH_TX register,
+ * to get this delay write read only register 10 times
+ */
+ for (i = 0; i < 10; ++i)
+ writew(0xff, uap->port.membase + UART011_MIS);
+ writew(lcr_h, port->membase + uap->lcrh_tx);
+ }
writew(old_cr, port->membase + UART011_CR);
spin_unlock_irqrestore(&port->lock, flags);
@@ -688,7 +741,7 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud,
if (readw(uap->port.membase + UART011_CR) & UART01x_CR_UARTEN) {
unsigned int lcr_h, ibrd, fbrd;
- lcr_h = readw(uap->port.membase + UART011_LCRH);
+ lcr_h = readw(uap->port.membase + uap->lcrh_tx);
*parity = 'n';
if (lcr_h & UART01x_LCRH_PEN) {
@@ -707,6 +760,12 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud,
fbrd = readw(uap->port.membase + UART011_FBRD);
*baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd);
+
+ if (uap->oversampling) {
+ if (readw(uap->port.membase + UART011_CR)
+ & ST_UART011_CR_OVSFACT)
+ *baud *= 2;
+ }
}
}
@@ -800,6 +859,9 @@ static int pl011_probe(struct amba_device *dev, struct amba_id *id)
}
uap->ifls = vendor->ifls;
+ uap->lcrh_rx = vendor->lcrh_rx;
+ uap->lcrh_tx = vendor->lcrh_tx;
+ uap->oversampling = vendor->oversampling;
uap->port.dev = &dev->dev;
uap->port.mapbase = dev->res.start;
uap->port.membase = base;
@@ -868,7 +930,7 @@ static int pl011_resume(struct amba_device *dev)
}
#endif
-static struct amba_id pl011_ids[] __initdata = {
+static struct amba_id pl011_ids[] = {
{
.id = 0x00041011,
.mask = 0x000fffff,
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index eaa79c8a9b8c..93ead19507b6 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -76,11 +76,12 @@
static const char driver_name [] = "at91_udc";
static const char ep0name[] = "ep0";
+#define VBUS_POLL_TIMEOUT msecs_to_jiffies(1000)
-#define at91_udp_read(dev, reg) \
- __raw_readl((dev)->udp_baseaddr + (reg))
-#define at91_udp_write(dev, reg, val) \
- __raw_writel((val), (dev)->udp_baseaddr + (reg))
+#define at91_udp_read(udc, reg) \
+ __raw_readl((udc)->udp_baseaddr + (reg))
+#define at91_udp_write(udc, reg, val) \
+ __raw_writel((val), (udc)->udp_baseaddr + (reg))
/*-------------------------------------------------------------------------*/
@@ -102,8 +103,9 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
u32 csr;
struct at91_request *req;
unsigned long flags;
+ struct at91_udc *udc = ep->udc;
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
csr = __raw_readl(ep->creg);
@@ -147,7 +149,7 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
&req->req, length,
req->req.length, req->req.buf);
}
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
}
static void proc_irq_show(struct seq_file *s, const char *label, u32 mask)
@@ -272,7 +274,9 @@ static void done(struct at91_ep *ep, struct at91_request *req, int status)
VDBG("%s done %p, status %d\n", ep->ep.name, req, status);
ep->stopped = 1;
+ spin_unlock(&udc->lock);
req->req.complete(&ep->ep, &req->req);
+ spin_lock(&udc->lock);
ep->stopped = stopped;
/* ep0 is always ready; other endpoints need a non-empty queue */
@@ -472,7 +476,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
const struct usb_endpoint_descriptor *desc)
{
struct at91_ep *ep = container_of(_ep, struct at91_ep, ep);
- struct at91_udc *dev = ep->udc;
+ struct at91_udc *udc = ep->udc;
u16 maxpacket;
u32 tmp;
unsigned long flags;
@@ -487,7 +491,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
return -EINVAL;
}
- if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+ if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
DBG("bogus device state\n");
return -ESHUTDOWN;
}
@@ -521,7 +525,7 @@ bogus_max:
}
ok:
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
/* initialize endpoint to match this descriptor */
ep->is_in = usb_endpoint_dir_in(desc);
@@ -540,10 +544,10 @@ ok:
* reset/init endpoint fifo. NOTE: leaves fifo_bank alone,
* since endpoint resets don't reset hw pingpong state.
*/
- at91_udp_write(dev, AT91_UDP_RST_EP, ep->int_mask);
- at91_udp_write(dev, AT91_UDP_RST_EP, 0);
+ at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask);
+ at91_udp_write(udc, AT91_UDP_RST_EP, 0);
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return 0;
}
@@ -556,7 +560,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
if (ep == &ep->udc->ep[0])
return -EINVAL;
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
nuke(ep, -ESHUTDOWN);
@@ -571,7 +575,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
__raw_writel(0, ep->creg);
}
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return 0;
}
@@ -607,7 +611,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
{
struct at91_request *req;
struct at91_ep *ep;
- struct at91_udc *dev;
+ struct at91_udc *udc;
int status;
unsigned long flags;
@@ -625,9 +629,9 @@ static int at91_ep_queue(struct usb_ep *_ep,
return -EINVAL;
}
- dev = ep->udc;
+ udc = ep->udc;
- if (!dev || !dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+ if (!udc || !udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
DBG("invalid device\n");
return -EINVAL;
}
@@ -635,7 +639,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
_req->status = -EINPROGRESS;
_req->actual = 0;
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
/* try to kickstart any empty and idle queue */
if (list_empty(&ep->queue) && !ep->stopped) {
@@ -653,7 +657,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
if (is_ep0) {
u32 tmp;
- if (!dev->req_pending) {
+ if (!udc->req_pending) {
status = -EINVAL;
goto done;
}
@@ -662,11 +666,11 @@ static int at91_ep_queue(struct usb_ep *_ep,
* defer changing CONFG until after the gadget driver
* reconfigures the endpoints.
*/
- if (dev->wait_for_config_ack) {
- tmp = at91_udp_read(dev, AT91_UDP_GLB_STAT);
+ if (udc->wait_for_config_ack) {
+ tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT);
tmp ^= AT91_UDP_CONFG;
VDBG("toggle config\n");
- at91_udp_write(dev, AT91_UDP_GLB_STAT, tmp);
+ at91_udp_write(udc, AT91_UDP_GLB_STAT, tmp);
}
if (req->req.length == 0) {
ep0_in_status:
@@ -676,7 +680,7 @@ ep0_in_status:
tmp &= ~SET_FX;
tmp |= CLR_FX | AT91_UDP_TXPKTRDY;
__raw_writel(tmp, ep->creg);
- dev->req_pending = 0;
+ udc->req_pending = 0;
goto done;
}
}
@@ -695,31 +699,40 @@ ep0_in_status:
if (req && !status) {
list_add_tail (&req->queue, &ep->queue);
- at91_udp_write(dev, AT91_UDP_IER, ep->int_mask);
+ at91_udp_write(udc, AT91_UDP_IER, ep->int_mask);
}
done:
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return (status < 0) ? status : 0;
}
static int at91_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
{
- struct at91_ep *ep;
+ struct at91_ep *ep;
struct at91_request *req;
+ unsigned long flags;
+ struct at91_udc *udc;
ep = container_of(_ep, struct at91_ep, ep);
if (!_ep || ep->ep.name == ep0name)
return -EINVAL;
+ udc = ep->udc;
+
+ spin_lock_irqsave(&udc->lock, flags);
+
/* make sure it's actually queued on this endpoint */
list_for_each_entry (req, &ep->queue, queue) {
if (&req->req == _req)
break;
}
- if (&req->req != _req)
+ if (&req->req != _req) {
+ spin_unlock_irqrestore(&udc->lock, flags);
return -EINVAL;
+ }
done(ep, req, -ECONNRESET);
+ spin_unlock_irqrestore(&udc->lock, flags);
return 0;
}
@@ -736,7 +749,7 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value)
return -EINVAL;
creg = ep->creg;
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
csr = __raw_readl(creg);
@@ -761,7 +774,7 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value)
__raw_writel(csr, creg);
}
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return status;
}
@@ -795,7 +808,7 @@ static int at91_wakeup(struct usb_gadget *gadget)
unsigned long flags;
DBG("%s\n", __func__ );
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
if (!udc->clocked || !udc->suspended)
goto done;
@@ -809,7 +822,7 @@ static int at91_wakeup(struct usb_gadget *gadget)
at91_udp_write(udc, AT91_UDP_GLB_STAT, glbstate);
done:
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return status;
}
@@ -851,8 +864,11 @@ static void stop_activity(struct at91_udc *udc)
ep->stopped = 1;
nuke(ep, -ESHUTDOWN);
}
- if (driver)
+ if (driver) {
+ spin_unlock(&udc->lock);
driver->disconnect(&udc->gadget);
+ spin_lock(&udc->lock);
+ }
udc_reinit(udc);
}
@@ -935,13 +951,13 @@ static int at91_vbus_session(struct usb_gadget *gadget, int is_active)
unsigned long flags;
// VDBG("vbus %s\n", is_active ? "on" : "off");
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
udc->vbus = (is_active != 0);
if (udc->driver)
pullup(udc, is_active);
else
pullup(udc, 0);
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return 0;
}
@@ -950,10 +966,10 @@ static int at91_pullup(struct usb_gadget *gadget, int is_on)
struct at91_udc *udc = to_udc(gadget);
unsigned long flags;
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
udc->enabled = is_on = !!is_on;
pullup(udc, is_on);
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return 0;
}
@@ -962,9 +978,9 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on)
struct at91_udc *udc = to_udc(gadget);
unsigned long flags;
- local_irq_save(flags);
+ spin_lock_irqsave(&udc->lock, flags);
udc->selfpowered = (is_on != 0);
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&udc->lock, flags);
return 0;
}
@@ -1226,8 +1242,11 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr)
#undef w_length
/* pass request up to the gadget driver */
- if (udc->driver)
+ if (udc->driver) {
+ spin_unlock(&udc->lock);
status = udc->driver->setup(&udc->gadget, &pkt.r);
+ spin_lock(&udc->lock);
+ }
else
status = -ENODEV;
if (status < 0) {
@@ -1378,6 +1397,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
struct at91_udc *udc = _udc;
u32 rescans = 5;
int disable_clock = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&udc->lock, flags);
if (!udc->clocked) {
clk_on(udc);
@@ -1433,8 +1455,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
* and then into standby to avoid drawing more than
* 500uA power (2500uA for some high-power configs).
*/
- if (udc->driver && udc->driver->suspend)
+ if (udc->driver && udc->driver->suspend) {
+ spin_unlock(&udc->lock);
udc->driver->suspend(&udc->gadget);
+ spin_lock(&udc->lock);
+ }
/* host initiated resume */
} else if (status & AT91_UDP_RXRSM) {
@@ -1451,8 +1476,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
* would normally want to switch out of slow clock
* mode into normal mode.
*/
- if (udc->driver && udc->driver->resume)
+ if (udc->driver && udc->driver->resume) {
+ spin_unlock(&udc->lock);
udc->driver->resume(&udc->gadget);
+ spin_lock(&udc->lock);
+ }
/* endpoint IRQs are cleared by handling them */
} else {
@@ -1474,6 +1502,8 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
if (disable_clock)
clk_off(udc);
+ spin_unlock_irqrestore(&udc->lock, flags);
+
return IRQ_HANDLED;
}
@@ -1556,24 +1586,53 @@ static struct at91_udc controller = {
/* ep6 and ep7 are also reserved (custom silicon might use them) */
};
+static void at91_vbus_update(struct at91_udc *udc, unsigned value)
+{
+ value ^= udc->board.vbus_active_low;
+ if (value != udc->vbus)
+ at91_vbus_session(&udc->gadget, value);
+}
+
static irqreturn_t at91_vbus_irq(int irq, void *_udc)
{
struct at91_udc *udc = _udc;
- unsigned value;
/* vbus needs at least brief debouncing */
udelay(10);
- value = gpio_get_value(udc->board.vbus_pin);
- if (value != udc->vbus)
- at91_vbus_session(&udc->gadget, value);
+ at91_vbus_update(udc, gpio_get_value(udc->board.vbus_pin));
return IRQ_HANDLED;
}
+static void at91_vbus_timer_work(struct work_struct *work)
+{
+ struct at91_udc *udc = container_of(work, struct at91_udc,
+ vbus_timer_work);
+
+ at91_vbus_update(udc, gpio_get_value_cansleep(udc->board.vbus_pin));
+
+ if (!timer_pending(&udc->vbus_timer))
+ mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT);
+}
+
+static void at91_vbus_timer(unsigned long data)
+{
+ struct at91_udc *udc = (struct at91_udc *)data;
+
+ /*
+ * If we are polling vbus it is likely that the gpio is on an
+ * bus such as i2c or spi which may sleep, so schedule some work
+ * to read the vbus gpio
+ */
+ if (!work_pending(&udc->vbus_timer_work))
+ schedule_work(&udc->vbus_timer_work);
+}
+
int usb_gadget_register_driver (struct usb_gadget_driver *driver)
{
struct at91_udc *udc = &controller;
int retval;
+ unsigned long flags;
if (!driver
|| driver->speed < USB_SPEED_FULL
@@ -1605,9 +1664,9 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
return retval;
}
- local_irq_disable();
+ spin_lock_irqsave(&udc->lock, flags);
pullup(udc, 1);
- local_irq_enable();
+ spin_unlock_irqrestore(&udc->lock, flags);
DBG("bound to %s\n", driver->driver.name);
return 0;
@@ -1617,15 +1676,16 @@ EXPORT_SYMBOL (usb_gadget_register_driver);
int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
{
struct at91_udc *udc = &controller;
+ unsigned long flags;
if (!driver || driver != udc->driver || !driver->unbind)
return -EINVAL;
- local_irq_disable();
+ spin_lock_irqsave(&udc->lock, flags);
udc->enabled = 0;
at91_udp_write(udc, AT91_UDP_IDR, ~0);
pullup(udc, 0);
- local_irq_enable();
+ spin_unlock_irqrestore(&udc->lock, flags);
driver->unbind(&udc->gadget);
udc->gadget.dev.driver = NULL;
@@ -1641,8 +1701,13 @@ EXPORT_SYMBOL (usb_gadget_unregister_driver);
static void at91udc_shutdown(struct platform_device *dev)
{
+ struct at91_udc *udc = platform_get_drvdata(dev);
+ unsigned long flags;
+
/* force disconnect on reboot */
+ spin_lock_irqsave(&udc->lock, flags);
pullup(platform_get_drvdata(dev), 0);
+ spin_unlock_irqrestore(&udc->lock, flags);
}
static int __init at91udc_probe(struct platform_device *pdev)
@@ -1683,6 +1748,7 @@ static int __init at91udc_probe(struct platform_device *pdev)
udc->board = *(struct at91_udc_data *) dev->platform_data;
udc->pdev = pdev;
udc->enabled = 0;
+ spin_lock_init(&udc->lock);
/* rm9200 needs manual D+ pullup; off by default */
if (cpu_is_at91rm9200()) {
@@ -1763,13 +1829,23 @@ static int __init at91udc_probe(struct platform_device *pdev)
* Get the initial state of VBUS - we cannot expect
* a pending interrupt.
*/
- udc->vbus = gpio_get_value(udc->board.vbus_pin);
- if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
- IRQF_DISABLED, driver_name, udc)) {
- DBG("request vbus irq %d failed\n",
- udc->board.vbus_pin);
- retval = -EBUSY;
- goto fail3;
+ udc->vbus = gpio_get_value_cansleep(udc->board.vbus_pin) ^
+ udc->board.vbus_active_low;
+
+ if (udc->board.vbus_polled) {
+ INIT_WORK(&udc->vbus_timer_work, at91_vbus_timer_work);
+ setup_timer(&udc->vbus_timer, at91_vbus_timer,
+ (unsigned long)udc);
+ mod_timer(&udc->vbus_timer,
+ jiffies + VBUS_POLL_TIMEOUT);
+ } else {
+ if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
+ IRQF_DISABLED, driver_name, udc)) {
+ DBG("request vbus irq %d failed\n",
+ udc->board.vbus_pin);
+ retval = -EBUSY;
+ goto fail3;
+ }
}
} else {
DBG("no VBUS detection, assuming always-on\n");
@@ -1804,13 +1880,16 @@ static int __exit at91udc_remove(struct platform_device *pdev)
{
struct at91_udc *udc = platform_get_drvdata(pdev);
struct resource *res;
+ unsigned long flags;
DBG("remove\n");
if (udc->driver)
return -EBUSY;
+ spin_lock_irqsave(&udc->lock, flags);
pullup(udc, 0);
+ spin_unlock_irqrestore(&udc->lock, flags);
device_init_wakeup(&pdev->dev, 0);
remove_debug_file(udc);
@@ -1840,6 +1919,7 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
{
struct at91_udc *udc = platform_get_drvdata(pdev);
int wake = udc->driver && device_may_wakeup(&pdev->dev);
+ unsigned long flags;
/* Unless we can act normally to the host (letting it wake us up
* whenever it has work for us) force disconnect. Wakeup requires
@@ -1849,13 +1929,15 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
if ((!udc->suspended && udc->addr)
|| !wake
|| at91_suspend_entering_slow_clock()) {
+ spin_lock_irqsave(&udc->lock, flags);
pullup(udc, 0);
wake = 0;
+ spin_unlock_irqrestore(&udc->lock, flags);
} else
enable_irq_wake(udc->udp_irq);
udc->active_suspend = wake;
- if (udc->board.vbus_pin > 0 && wake)
+ if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled && wake)
enable_irq_wake(udc->board.vbus_pin);
return 0;
}
@@ -1863,15 +1945,20 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
static int at91udc_resume(struct platform_device *pdev)
{
struct at91_udc *udc = platform_get_drvdata(pdev);
+ unsigned long flags;
- if (udc->board.vbus_pin > 0 && udc->active_suspend)
+ if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled &&
+ udc->active_suspend)
disable_irq_wake(udc->board.vbus_pin);
/* maybe reconnect to host; if so, clocks on */
if (udc->active_suspend)
disable_irq_wake(udc->udp_irq);
- else
+ else {
+ spin_lock_irqsave(&udc->lock, flags);
pullup(udc, 1);
+ spin_unlock_irqrestore(&udc->lock, flags);
+ }
return 0;
}
#else
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
index c65d62295890..108ca54f9092 100644
--- a/drivers/usb/gadget/at91_udc.h
+++ b/drivers/usb/gadget/at91_udc.h
@@ -144,6 +144,9 @@ struct at91_udc {
struct proc_dir_entry *pde;
void __iomem *udp_baseaddr;
int udp_irq;
+ spinlock_t lock;
+ struct timer_list vbus_timer;
+ struct work_struct vbus_timer_work;
};
static inline struct at91_udc *to_udc(struct usb_gadget *g)
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index 3b1237ad85ed..f6fdc2085f3e 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/completion.h>
#include <linux/debugfs.h>
#include <linux/jiffies.h>
@@ -525,10 +525,8 @@ early_param("vram", omap_vram_early_vram);
* Called from map_io. We need to call to this early enough so that we
* can reserve the fixed SDRAM regions before VM could get hold of them.
*/
-void __init omap_vram_reserve_sdram(void)
+void __init omap_vram_reserve_sdram_memblock(void)
{
- struct bootmem_data *bdata;
- unsigned long sdram_start, sdram_size;
u32 paddr;
u32 size = 0;
@@ -555,29 +553,28 @@ void __init omap_vram_reserve_sdram(void)
size = PAGE_ALIGN(size);
- bdata = NODE_DATA(0)->bdata;
- sdram_start = bdata->node_min_pfn << PAGE_SHIFT;
- sdram_size = (bdata->node_low_pfn << PAGE_SHIFT) - sdram_start;
-
if (paddr) {
- if ((paddr & ~PAGE_MASK) || paddr < sdram_start ||
- paddr + size > sdram_start + sdram_size) {
+ struct memblock_property res;
+
+ res.base = paddr;
+ res.size = size;
+ if ((paddr & ~PAGE_MASK) || memblock_find(&res) ||
+ res.base != paddr || res.size != size) {
pr_err("Illegal SDRAM region for VRAM\n");
return;
}
- if (reserve_bootmem(paddr, size, BOOTMEM_EXCLUSIVE) < 0) {
- pr_err("FB: failed to reserve VRAM\n");
+ if (memblock_is_region_reserved(paddr, size)) {
+ pr_err("FB: failed to reserve VRAM - busy\n");
return;
}
- } else {
- if (size > sdram_size) {
- pr_err("Illegal SDRAM size for VRAM\n");
+
+ if (memblock_reserve(paddr, size) < 0) {
+ pr_err("FB: failed to reserve VRAM - no memory\n");
return;
}
-
- paddr = virt_to_phys(alloc_bootmem_pages(size));
- BUG_ON(paddr & ~PAGE_MASK);
+ } else {
+ paddr = memblock_alloc_base(size, PAGE_SIZE, MEMBLOCK_REAL_LIMIT);
}
omap_vram_add_region(paddr, size);
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-01 06:41:20 +0000