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-rw-r--r--drivers/misc/Kconfig19
-rw-r--r--drivers/misc/Makefile1
-rw-r--r--drivers/misc/eeprom/at24.c1
-rw-r--r--drivers/misc/eeprom/at25.c1
-rw-r--r--drivers/misc/iwmc3200top/fw-download.c50
-rw-r--r--drivers/misc/iwmc3200top/iwmc3200top.h4
-rw-r--r--drivers/misc/iwmc3200top/log.h31
-rw-r--r--drivers/misc/iwmc3200top/main.c61
-rw-r--r--drivers/misc/lkdtm.c472
-rw-r--r--drivers/misc/phantom.c13
-rw-r--r--drivers/misc/sgi-gru/grutables.h15
-rw-r--r--drivers/misc/sgi-xp/xpnet.c2
-rw-r--r--drivers/misc/tsl2550.c473
13 files changed, 967 insertions, 176 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index e3551d20464..2191c8d896a 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -212,6 +212,15 @@ config CS5535_MFGPT_DEFAULT_IRQ
want to use a different IRQ by default. This is here for
architectures to set as necessary.
+config CS5535_CLOCK_EVENT_SRC
+ tristate "CS5535/CS5536 high-res timer (MFGPT) events"
+ depends on GENERIC_TIME && GENERIC_CLOCKEVENTS && CS5535_MFGPT
+ help
+ This driver provides a clock event source based on the MFGPT
+ timer(s) in the CS5535 and CS5536 companion chips.
+ MFGPTs have a better resolution and max interval than the
+ generic PIT, and are suitable for use as high-res timers.
+
config HP_ILO
tristate "Channel interface driver for HP iLO/iLO2 processor"
depends on PCI
@@ -259,6 +268,16 @@ config ISL29003
This driver can also be built as a module. If so, the module
will be called isl29003.
+config SENSORS_TSL2550
+ tristate "Taos TSL2550 ambient light sensor"
+ depends on I2C && SYSFS
+ help
+ If you say yes here you get support for the Taos TSL2550
+ ambient light sensor.
+
+ This driver can also be built as a module. If so, the module
+ will be called tsl2550.
+
config EP93XX_PWM
tristate "EP93xx PWM support"
depends on ARCH_EP93XX
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 049ff2482f3..27c48435541 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_SGI_GRU) += sgi-gru/
obj-$(CONFIG_CS5535_MFGPT) += cs5535-mfgpt.o
obj-$(CONFIG_HP_ILO) += hpilo.o
obj-$(CONFIG_ISL29003) += isl29003.o
+obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o
obj-$(CONFIG_EP93XX_PWM) += ep93xx_pwm.o
obj-$(CONFIG_DS1682) += ds1682.o
obj-$(CONFIG_TI_DAC7512) += ti_dac7512.o
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 2cb2736d65a..db7d0f21b65 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -505,6 +505,7 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
* Export the EEPROM bytes through sysfs, since that's convenient.
* By default, only root should see the data (maybe passwords etc)
*/
+ sysfs_bin_attr_init(&at24->bin);
at24->bin.attr.name = "eeprom";
at24->bin.attr.mode = chip.flags & AT24_FLAG_IRUGO ? S_IRUGO : S_IRUSR;
at24->bin.read = at24_bin_read;
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index d902d81dde3..d194212a41f 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -347,6 +347,7 @@ static int at25_probe(struct spi_device *spi)
* that's sensitive for read and/or write, like ethernet addresses,
* security codes, board-specific manufacturing calibrations, etc.
*/
+ sysfs_bin_attr_init(&at25->bin);
at25->bin.attr.name = "eeprom";
at25->bin.attr.mode = S_IRUSR;
at25->bin.read = at25_bin_read;
diff --git a/drivers/misc/iwmc3200top/fw-download.c b/drivers/misc/iwmc3200top/fw-download.c
index 50d431e469f..9dbaeb574e6 100644
--- a/drivers/misc/iwmc3200top/fw-download.c
+++ b/drivers/misc/iwmc3200top/fw-download.c
@@ -43,15 +43,14 @@ static int iwmct_fw_parser_init(struct iwmct_priv *priv, const u8 *file,
struct iwmct_parser *parser = &priv->parser;
struct iwmct_fw_hdr *fw_hdr = &parser->versions;
- LOG_INFOEX(priv, INIT, "-->\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "-->\n");
LOG_INFO(priv, FW_DOWNLOAD, "file_size=%zd\n", file_size);
parser->file = file;
parser->file_size = file_size;
parser->cur_pos = 0;
- parser->buf = NULL;
-
+ parser->entry_point = 0;
parser->buf = kzalloc(block_size, GFP_KERNEL);
if (!parser->buf) {
LOG_ERROR(priv, FW_DOWNLOAD, "kzalloc error\n");
@@ -70,7 +69,7 @@ static int iwmct_fw_parser_init(struct iwmct_priv *priv, const u8 *file,
parser->cur_pos += sizeof(struct iwmct_fw_hdr);
- LOG_INFOEX(priv, INIT, "<--\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "<--\n");
return 0;
}
@@ -113,7 +112,7 @@ static int iwmct_parse_next_section(struct iwmct_priv *priv, const u8 **p_sec,
struct iwmct_dbg *dbg = &priv->dbg;
struct iwmct_fw_sec_hdr *sec_hdr;
- LOG_INFOEX(priv, INIT, "-->\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "-->\n");
while (parser->cur_pos + sizeof(struct iwmct_fw_sec_hdr)
<= parser->file_size) {
@@ -152,7 +151,7 @@ static int iwmct_parse_next_section(struct iwmct_priv *priv, const u8 **p_sec,
"finished with section cur_pos=%zd\n", parser->cur_pos);
}
- LOG_INFOEX(priv, INIT, "<--\n");
+ LOG_TRACE(priv, INIT, "<--\n");
return 0;
}
@@ -167,7 +166,7 @@ static int iwmct_download_section(struct iwmct_priv *priv, const u8 *p_sec,
int ret = 0;
u32 cmd = 0;
- LOG_INFOEX(priv, INIT, "-->\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "-->\n");
LOG_INFO(priv, FW_DOWNLOAD, "Download address 0x%x size 0x%zx\n",
addr, sec_size);
@@ -229,7 +228,7 @@ static int iwmct_download_section(struct iwmct_priv *priv, const u8 *p_sec,
hdr->cmd = cpu_to_le32(cmd);
/* send it down */
/* TODO: add more proper sending and error checking */
- ret = iwmct_tx(priv, 0, parser->buf, trans_size);
+ ret = iwmct_tx(priv, parser->buf, trans_size);
if (ret != 0) {
LOG_INFO(priv, FW_DOWNLOAD,
"iwmct_tx returned %d\n", ret);
@@ -251,7 +250,7 @@ static int iwmct_download_section(struct iwmct_priv *priv, const u8 *p_sec,
if (sent < sec_size)
ret = -EINVAL;
exit:
- LOG_INFOEX(priv, INIT, "<--\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "<--\n");
return ret;
}
@@ -262,7 +261,7 @@ static int iwmct_kick_fw(struct iwmct_priv *priv, bool jump)
int ret;
u32 cmd;
- LOG_INFOEX(priv, INIT, "-->\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "-->\n");
memset(parser->buf, 0, parser->buf_size);
cmd = IWMC_CMD_SIGNATURE << CMD_HDR_SIGNATURE_POS;
@@ -281,11 +280,11 @@ static int iwmct_kick_fw(struct iwmct_priv *priv, bool jump)
LOG_HEXDUMP(FW_DOWNLOAD, parser->buf, sizeof(*hdr));
/* send it down */
/* TODO: add more proper sending and error checking */
- ret = iwmct_tx(priv, 0, parser->buf, IWMC_SDIO_BLK_SIZE);
+ ret = iwmct_tx(priv, parser->buf, IWMC_SDIO_BLK_SIZE);
if (ret)
LOG_INFO(priv, FW_DOWNLOAD, "iwmct_tx returned %d", ret);
- LOG_INFOEX(priv, INIT, "<--\n");
+ LOG_TRACE(priv, FW_DOWNLOAD, "<--\n");
return 0;
}
@@ -298,8 +297,16 @@ int iwmct_fw_load(struct iwmct_priv *priv)
__le32 addr;
int ret;
- /* clear parser struct */
- memset(&priv->parser, 0, sizeof(struct iwmct_parser));
+
+ LOG_INFO(priv, FW_DOWNLOAD, "barker download request 0x%x is:\n",
+ priv->barker);
+ LOG_INFO(priv, FW_DOWNLOAD, "******* Top FW %s requested ********\n",
+ (priv->barker & BARKER_DNLOAD_TOP_MSK) ? "was" : "not");
+ LOG_INFO(priv, FW_DOWNLOAD, "******* GPS FW %s requested ********\n",
+ (priv->barker & BARKER_DNLOAD_GPS_MSK) ? "was" : "not");
+ LOG_INFO(priv, FW_DOWNLOAD, "******* BT FW %s requested ********\n",
+ (priv->barker & BARKER_DNLOAD_BT_MSK) ? "was" : "not");
+
/* get the firmware */
ret = request_firmware(&raw, fw_name, &priv->func->dev);
@@ -317,6 +324,7 @@ int iwmct_fw_load(struct iwmct_priv *priv)
LOG_INFO(priv, FW_DOWNLOAD, "Read firmware '%s'\n", fw_name);
+ /* clear parser struct */
ret = iwmct_fw_parser_init(priv, raw->data, raw->size, priv->trans_len);
if (ret < 0) {
LOG_ERROR(priv, FW_DOWNLOAD,
@@ -324,7 +332,6 @@ int iwmct_fw_load(struct iwmct_priv *priv)
goto exit;
}
- /* checksum */
if (!iwmct_checksum(priv)) {
LOG_ERROR(priv, FW_DOWNLOAD, "checksum error\n");
ret = -EINVAL;
@@ -333,23 +340,18 @@ int iwmct_fw_load(struct iwmct_priv *priv)
/* download firmware to device */
while (iwmct_parse_next_section(priv, &pdata, &len, &addr)) {
- if (iwmct_download_section(priv, pdata, len, addr)) {
+ ret = iwmct_download_section(priv, pdata, len, addr);
+ if (ret) {
LOG_ERROR(priv, FW_DOWNLOAD,
"%s download section failed\n", fw_name);
- ret = -EIO;
goto exit;
}
}
- iwmct_kick_fw(priv, !!(priv->barker & BARKER_DNLOAD_JUMP_MSK));
+ ret = iwmct_kick_fw(priv, !!(priv->barker & BARKER_DNLOAD_JUMP_MSK));
exit:
kfree(priv->parser.buf);
-
- if (raw)
- release_firmware(raw);
-
- raw = NULL;
-
+ release_firmware(raw);
return ret;
}
diff --git a/drivers/misc/iwmc3200top/iwmc3200top.h b/drivers/misc/iwmc3200top/iwmc3200top.h
index 43bd510e187..740ff0738ea 100644
--- a/drivers/misc/iwmc3200top/iwmc3200top.h
+++ b/drivers/misc/iwmc3200top/iwmc3200top.h
@@ -196,9 +196,7 @@ struct iwmct_priv {
struct list_head read_req_list;
};
-extern int iwmct_tx(struct iwmct_priv *priv, unsigned int addr,
- void *src, int count);
-
+extern int iwmct_tx(struct iwmct_priv *priv, void *src, int count);
extern int iwmct_fw_load(struct iwmct_priv *priv);
extern void iwmct_dbg_init_params(struct iwmct_priv *drv);
diff --git a/drivers/misc/iwmc3200top/log.h b/drivers/misc/iwmc3200top/log.h
index aba8121f978..4434bb16cea 100644
--- a/drivers/misc/iwmc3200top/log.h
+++ b/drivers/misc/iwmc3200top/log.h
@@ -37,13 +37,26 @@
#define LOG_SEV_INFO 3
#define LOG_SEV_INFOEX 4
-#define LOG_SEV_FILTER_ALL \
- (BIT(LOG_SEV_CRITICAL) | \
- BIT(LOG_SEV_ERROR) | \
- BIT(LOG_SEV_WARNING) | \
- BIT(LOG_SEV_INFO) | \
+/* Log levels not defined for FW */
+#define LOG_SEV_TRACE 5
+#define LOG_SEV_DUMP 6
+
+#define LOG_SEV_FW_FILTER_ALL \
+ (BIT(LOG_SEV_CRITICAL) | \
+ BIT(LOG_SEV_ERROR) | \
+ BIT(LOG_SEV_WARNING) | \
+ BIT(LOG_SEV_INFO) | \
BIT(LOG_SEV_INFOEX))
+#define LOG_SEV_FILTER_ALL \
+ (BIT(LOG_SEV_CRITICAL) | \
+ BIT(LOG_SEV_ERROR) | \
+ BIT(LOG_SEV_WARNING) | \
+ BIT(LOG_SEV_INFO) | \
+ BIT(LOG_SEV_INFOEX) | \
+ BIT(LOG_SEV_TRACE) | \
+ BIT(LOG_SEV_DUMP))
+
/* log source */
#define LOG_SRC_INIT 0
#define LOG_SRC_DEBUGFS 1
@@ -104,16 +117,16 @@ do { \
__func__, __LINE__, ##args); \
} while (0)
-#define LOG_INFOEX(priv, src, fmt, args...) \
+#define LOG_TRACE(priv, src, fmt, args...) \
do { \
- if (iwmct_logdefs[LOG_SRC_ ## src] & BIT(LOG_SEV_INFOEX)) \
+ if (iwmct_logdefs[LOG_SRC_ ## src] & BIT(LOG_SEV_TRACE)) \
dev_dbg(priv2dev(priv), "%s %d: " fmt, \
__func__, __LINE__, ##args); \
} while (0)
#define LOG_HEXDUMP(src, ptr, len) \
do { \
- if (iwmct_logdefs[LOG_SRC_ ## src] & BIT(LOG_SEV_INFOEX)) \
+ if (iwmct_logdefs[LOG_SRC_ ## src] & BIT(LOG_SEV_DUMP)) \
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE, \
16, 1, ptr, len, false); \
} while (0)
@@ -142,7 +155,7 @@ ssize_t store_iwmct_log_level_fw(struct device *d,
#define LOG_ERROR(priv, src, fmt, args...)
#define LOG_WARNING(priv, src, fmt, args...)
#define LOG_INFO(priv, src, fmt, args...)
-#define LOG_INFOEX(priv, src, fmt, args...)
+#define LOG_TRACE(priv, src, fmt, args...)
#define LOG_HEXDUMP(src, ptr, len)
static inline void iwmct_log_top_message(struct iwmct_priv *priv,
diff --git a/drivers/misc/iwmc3200top/main.c b/drivers/misc/iwmc3200top/main.c
index fafcaa481d7..3b7292a5cea 100644
--- a/drivers/misc/iwmc3200top/main.c
+++ b/drivers/misc/iwmc3200top/main.c
@@ -49,6 +49,20 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR(DRIVER_COPYRIGHT);
MODULE_FIRMWARE(FW_NAME(FW_API_VER));
+
+static inline int __iwmct_tx(struct iwmct_priv *priv, void *src, int count)
+{
+ return sdio_memcpy_toio(priv->func, IWMC_SDIO_DATA_ADDR, src, count);
+
+}
+int iwmct_tx(struct iwmct_priv *priv, void *src, int count)
+{
+ int ret;
+ sdio_claim_host(priv->func);
+ ret = __iwmct_tx(priv, src, count);
+ sdio_release_host(priv->func);
+ return ret;
+}
/*
* This workers main task is to wait for OP_OPR_ALIVE
* from TOP FW until ALIVE_MSG_TIMOUT timeout is elapsed.
@@ -66,7 +80,7 @@ static void iwmct_rescan_worker(struct work_struct *ws)
ret = bus_rescan_devices(priv->func->dev.bus);
if (ret < 0)
- LOG_INFO(priv, FW_DOWNLOAD, "bus_rescan_devices FAILED!!!\n");
+ LOG_INFO(priv, INIT, "bus_rescan_devices FAILED!!!\n");
}
static void op_top_message(struct iwmct_priv *priv, struct top_msg *msg)
@@ -137,7 +151,7 @@ int iwmct_send_hcmd(struct iwmct_priv *priv, u8 *cmd, u16 len)
int ret;
u8 *buf;
- LOG_INFOEX(priv, FW_MSG, "Sending hcmd:\n");
+ LOG_TRACE(priv, FW_MSG, "Sending hcmd:\n");
/* add padding to 256 for IWMC */
((struct top_msg *)cmd)->hdr.flags |= CMD_FLAG_PADDING_256;
@@ -158,27 +172,12 @@ int iwmct_send_hcmd(struct iwmct_priv *priv, u8 *cmd, u16 len)
}
memcpy(buf, cmd, len);
-
- sdio_claim_host(priv->func);
- ret = sdio_memcpy_toio(priv->func, IWMC_SDIO_DATA_ADDR, buf,
- FW_HCMD_BLOCK_SIZE);
- sdio_release_host(priv->func);
+ ret = iwmct_tx(priv, buf, FW_HCMD_BLOCK_SIZE);
kfree(buf);
return ret;
}
-int iwmct_tx(struct iwmct_priv *priv, unsigned int addr,
- void *src, int count)
-{
- int ret;
-
- sdio_claim_host(priv->func);
- ret = sdio_memcpy_toio(priv->func, addr, src, count);
- sdio_release_host(priv->func);
-
- return ret;
-}
static void iwmct_irq_read_worker(struct work_struct *ws)
{
@@ -192,7 +191,7 @@ static void iwmct_irq_read_worker(struct work_struct *ws)
priv = container_of(ws, struct iwmct_priv, isr_worker);
- LOG_INFO(priv, IRQ, "enter iwmct_irq_read_worker %p\n", ws);
+ LOG_TRACE(priv, IRQ, "enter iwmct_irq_read_worker %p\n", ws);
/* --------------------- Handshake with device -------------------- */
sdio_claim_host(priv->func);
@@ -273,8 +272,7 @@ static void iwmct_irq_read_worker(struct work_struct *ws)
if (barker & BARKER_DNLOAD_SYNC_MSK) {
/* Send the same barker back */
- ret = sdio_memcpy_toio(priv->func, IWMC_SDIO_DATA_ADDR,
- buf, iosize);
+ ret = __iwmct_tx(priv, buf, iosize);
if (ret) {
LOG_ERROR(priv, IRQ,
"error %d echoing barker\n", ret);
@@ -292,15 +290,6 @@ static void iwmct_irq_read_worker(struct work_struct *ws)
sdio_release_host(priv->func);
-
- LOG_INFO(priv, IRQ, "barker download request 0x%x is:\n", priv->barker);
- LOG_INFO(priv, IRQ, "******* Top FW %s requested ********\n",
- (priv->barker & BARKER_DNLOAD_TOP_MSK) ? "was" : "not");
- LOG_INFO(priv, IRQ, "******* GPS FW %s requested ********\n",
- (priv->barker & BARKER_DNLOAD_GPS_MSK) ? "was" : "not");
- LOG_INFO(priv, IRQ, "******* BT FW %s requested ********\n",
- (priv->barker & BARKER_DNLOAD_BT_MSK) ? "was" : "not");
-
if (priv->dbg.fw_download)
iwmct_fw_load(priv);
else
@@ -312,7 +301,7 @@ exit_release:
sdio_release_host(priv->func);
exit:
kfree(buf);
- LOG_INFO(priv, IRQ, "exit iwmct_irq_read_worker\n");
+ LOG_TRACE(priv, IRQ, "exit iwmct_irq_read_worker\n");
}
static void iwmct_irq(struct sdio_func *func)
@@ -325,12 +314,12 @@ static void iwmct_irq(struct sdio_func *func)
priv = sdio_get_drvdata(func);
- LOG_INFO(priv, IRQ, "enter iwmct_irq\n");
+ LOG_TRACE(priv, IRQ, "enter iwmct_irq\n");
/* read the function's status register */
val = sdio_readb(func, IWMC_SDIO_INTR_STATUS_ADDR, &ret);
- LOG_INFO(priv, IRQ, "iir value = %d, ret=%d\n", val, ret);
+ LOG_TRACE(priv, IRQ, "iir value = %d, ret=%d\n", val, ret);
if (!val) {
LOG_ERROR(priv, IRQ, "iir = 0, exiting ISR\n");
@@ -372,7 +361,7 @@ static void iwmct_irq(struct sdio_func *func)
queue_work(priv->wq, &priv->isr_worker);
- LOG_INFO(priv, IRQ, "exit iwmct_irq\n");
+ LOG_TRACE(priv, IRQ, "exit iwmct_irq\n");
return;
@@ -608,8 +597,6 @@ static void iwmct_remove(struct sdio_func *func)
struct iwmct_work_struct *read_req;
struct iwmct_priv *priv = sdio_get_drvdata(func);
- priv = sdio_get_drvdata(func);
-
LOG_INFO(priv, INIT, "enter\n");
sdio_claim_host(func);
@@ -660,7 +647,7 @@ static int __init iwmct_init(void)
/* Default log filter settings */
iwmct_log_set_filter(LOG_SRC_ALL, LOG_SEV_FILTER_RUNTIME);
- iwmct_log_set_filter(LOG_SRC_FW_MSG, LOG_SEV_FILTER_ALL);
+ iwmct_log_set_filter(LOG_SRC_FW_MSG, LOG_SEV_FW_FILTER_ALL);
iwmct_log_set_fw_filter(LOG_SRC_ALL, FW_LOG_SEV_FILTER_RUNTIME);
rc = sdio_register_driver(&iwmct_driver);
diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c
index 3648b23d5c9..4a0648301fd 100644
--- a/drivers/misc/lkdtm.c
+++ b/drivers/misc/lkdtm.c
@@ -26,21 +26,9 @@
* It is adapted from the Linux Kernel Dump Test Tool by
* Fernando Luis Vazquez Cao <http://lkdtt.sourceforge.net>
*
- * Usage : insmod lkdtm.ko [recur_count={>0}] cpoint_name=<> cpoint_type=<>
- * [cpoint_count={>0}]
+ * Debugfs support added by Simon Kagstrom <simon.kagstrom@netinsight.net>
*
- * recur_count : Recursion level for the stack overflow test. Default is 10.
- *
- * cpoint_name : Crash point where the kernel is to be crashed. It can be
- * one of INT_HARDWARE_ENTRY, INT_HW_IRQ_EN, INT_TASKLET_ENTRY,
- * FS_DEVRW, MEM_SWAPOUT, TIMERADD, SCSI_DISPATCH_CMD,
- * IDE_CORE_CP
- *
- * cpoint_type : Indicates the action to be taken on hitting the crash point.
- * It can be one of PANIC, BUG, EXCEPTION, LOOP, OVERFLOW
- *
- * cpoint_count : Indicates the number of times the crash point is to be hit
- * to trigger an action. The default is 10.
+ * See Documentation/fault-injection/provoke-crashes.txt for instructions
*/
#include <linux/kernel.h>
@@ -53,13 +41,12 @@
#include <linux/interrupt.h>
#include <linux/hrtimer.h>
#include <scsi/scsi_cmnd.h>
+#include <linux/debugfs.h>
#ifdef CONFIG_IDE
#include <linux/ide.h>
#endif
-#define NUM_CPOINTS 8
-#define NUM_CPOINT_TYPES 5
#define DEFAULT_COUNT 10
#define REC_NUM_DEFAULT 10
@@ -72,7 +59,8 @@ enum cname {
MEM_SWAPOUT,
TIMERADD,
SCSI_DISPATCH_CMD,
- IDE_CORE_CP
+ IDE_CORE_CP,
+ DIRECT,
};
enum ctype {
@@ -81,7 +69,11 @@ enum ctype {
BUG,
EXCEPTION,
LOOP,
- OVERFLOW
+ OVERFLOW,
+ CORRUPT_STACK,
+ UNALIGNED_LOAD_STORE_WRITE,
+ OVERWRITE_ALLOCATION,
+ WRITE_AFTER_FREE,
};
static char* cp_name[] = {
@@ -92,7 +84,8 @@ static char* cp_name[] = {
"MEM_SWAPOUT",
"TIMERADD",
"SCSI_DISPATCH_CMD",
- "IDE_CORE_CP"
+ "IDE_CORE_CP",
+ "DIRECT",
};
static char* cp_type[] = {
@@ -100,7 +93,11 @@ static char* cp_type[] = {
"BUG",
"EXCEPTION",
"LOOP",
- "OVERFLOW"
+ "OVERFLOW",
+ "CORRUPT_STACK",
+ "UNALIGNED_LOAD_STORE_WRITE",
+ "OVERWRITE_ALLOCATION",
+ "WRITE_AFTER_FREE",
};
static struct jprobe lkdtm;
@@ -193,34 +190,66 @@ int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file,
}
#endif
+/* Return the crashpoint number or NONE if the name is invalid */
+static enum ctype parse_cp_type(const char *what, size_t count)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cp_type); i++) {
+ if (!strcmp(what, cp_type[i]))
+ return i + 1;
+ }
+
+ return NONE;
+}
+
+static const char *cp_type_to_str(enum ctype type)
+{
+ if (type == NONE || type < 0 || type > ARRAY_SIZE(cp_type))
+ return "None";
+
+ return cp_type[type - 1];
+}
+
+static const char *cp_name_to_str(enum cname name)
+{
+ if (name == INVALID || name < 0 || name > ARRAY_SIZE(cp_name))
+ return "INVALID";
+
+ return cp_name[name - 1];
+}
+
+
static int lkdtm_parse_commandline(void)
{
int i;
- if (cpoint_name == NULL || cpoint_type == NULL ||
- cpoint_count < 1 || recur_count < 1)
+ if (cpoint_count < 1 || recur_count < 1)
return -EINVAL;
- for (i = 0; i < NUM_CPOINTS; ++i) {
+ count = cpoint_count;
+
+ /* No special parameters */
+ if (!cpoint_type && !cpoint_name)
+ return 0;
+
+ /* Neither or both of these need to be set */
+ if (!cpoint_type || !cpoint_name)
+ return -EINVAL;
+
+ cptype = parse_cp_type(cpoint_type, strlen(cpoint_type));
+ if (cptype == NONE)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(cp_name); i++) {
if (!strcmp(cpoint_name, cp_name[i])) {
cpoint = i + 1;
- break;
- }
- }
-
- for (i = 0; i < NUM_CPOINT_TYPES; ++i) {
- if (!strcmp(cpoint_type, cp_type[i])) {
- cptype = i + 1;
- break;
+ return 0;
}
}
- if (cpoint == INVALID || cptype == NONE)
- return -EINVAL;
-
- count = cpoint_count;
-
- return 0;
+ /* Could not find a valid crash point */
+ return -EINVAL;
}
static int recursive_loop(int a)
@@ -235,53 +264,92 @@ static int recursive_loop(int a)
return recursive_loop(a);
}
-void lkdtm_handler(void)
+static void lkdtm_do_action(enum ctype which)
{
- printk(KERN_INFO "lkdtm : Crash point %s of type %s hit\n",
- cpoint_name, cpoint_type);
- --count;
+ switch (which) {
+ case PANIC:
+ panic("dumptest");
+ break;
+ case BUG:
+ BUG();
+ break;
+ case EXCEPTION:
+ *((int *) 0) = 0;
+ break;
+ case LOOP:
+ for (;;)
+ ;
+ break;
+ case OVERFLOW:
+ (void) recursive_loop(0);
+ break;
+ case CORRUPT_STACK: {
+ volatile u32 data[8];
+ volatile u32 *p = data;
+
+ p[12] = 0x12345678;
+ break;
+ }
+ case UNALIGNED_LOAD_STORE_WRITE: {
+ static u8 data[5] __attribute__((aligned(4))) = {1, 2,
+ 3, 4, 5};
+ u32 *p;
+ u32 val = 0x12345678;
+
+ p = (u32 *)(data + 1);
+ if (*p == 0)
+ val = 0x87654321;
+ *p = val;
+ break;
+ }
+ case OVERWRITE_ALLOCATION: {
+ size_t len = 1020;
+ u32 *data = kmalloc(len, GFP_KERNEL);
+
+ data[1024 / sizeof(u32)] = 0x12345678;
+ kfree(data);
+ break;
+ }
+ case WRITE_AFTER_FREE: {
+ size_t len = 1024;
+ u32 *data = kmalloc(len, GFP_KERNEL);
+
+ kfree(data);
+ schedule();
+ memset(data, 0x78, len);
+ break;
+ }
+ case NONE:
+ default:
+ break;
+ }
+
+}
+
+static void lkdtm_handler(void)
+{
+ count--;
+ printk(KERN_INFO "lkdtm: Crash point %s of type %s hit, trigger in %d rounds\n",
+ cp_name_to_str(cpoint), cp_type_to_str(cptype), count);
if (count == 0) {
- switch (cptype) {
- case NONE:
- break;
- case PANIC:
- printk(KERN_INFO "lkdtm : PANIC\n");
- panic("dumptest");
- break;
- case BUG:
- printk(KERN_INFO "lkdtm : BUG\n");
- BUG();
- break;
- case EXCEPTION:
- printk(KERN_INFO "lkdtm : EXCEPTION\n");
- *((int *) 0) = 0;
- break;
- case LOOP:
- printk(KERN_INFO "lkdtm : LOOP\n");
- for (;;);
- break;
- case OVERFLOW:
- printk(KERN_INFO "lkdtm : OVERFLOW\n");
- (void) recursive_loop(0);
- break;
- default:
- break;
- }
+ lkdtm_do_action(cptype);
count = cpoint_count;
}
}
-static int __init lkdtm_module_init(void)
+static int lkdtm_register_cpoint(enum cname which)
{
int ret;
- if (lkdtm_parse_commandline() == -EINVAL) {
- printk(KERN_INFO "lkdtm : Invalid command\n");
- return -EINVAL;
- }
+ cpoint = INVALID;
+ if (lkdtm.entry != NULL)
+ unregister_jprobe(&lkdtm);
- switch (cpoint) {
+ switch (which) {
+ case DIRECT:
+ lkdtm_do_action(cptype);
+ return 0;
case INT_HARDWARE_ENTRY:
lkdtm.kp.symbol_name = "do_IRQ";
lkdtm.entry = (kprobe_opcode_t*) jp_do_irq;
@@ -315,28 +383,268 @@ static int __init lkdtm_module_init(void)
lkdtm.kp.symbol_name = "generic_ide_ioctl";
lkdtm.entry = (kprobe_opcode_t*) jp_generic_ide_ioctl;
#else
- printk(KERN_INFO "lkdtm : Crash point not available\n");
+ printk(KERN_INFO "lkdtm: Crash point not available\n");
+ return -EINVAL;
#endif
break;
default:
- printk(KERN_INFO "lkdtm : Invalid Crash Point\n");
- break;
+ printk(KERN_INFO "lkdtm: Invalid Crash Point\n");
+ return -EINVAL;
}
+ cpoint = which;
if ((ret = register_jprobe(&lkdtm)) < 0) {
- printk(KERN_INFO "lkdtm : Couldn't register jprobe\n");
- return ret;
+ printk(KERN_INFO "lkdtm: Couldn't register jprobe\n");
+ cpoint = INVALID;
+ }
+
+ return ret;
+}
+
+static ssize_t do_register_entry(enum cname which, struct file *f,
+ const char __user *user_buf, size_t count, loff_t *off)
+{
+ char *buf;
+ int err;
+
+ if (count >= PAGE_SIZE)
+ return -EINVAL;
+
+ buf = (char *)__get_free_page(GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ if (copy_from_user(buf, user_buf, count)) {
+ free_page((unsigned long) buf);
+ return -EFAULT;
+ }
+ /* NULL-terminate and remove enter */
+ buf[count] = '\0';
+ strim(buf);
+
+ cptype = parse_cp_type(buf, count);
+ free_page((unsigned long) buf);
+
+ if (cptype == NONE)
+ return -EINVAL;
+
+ err = lkdtm_register_cpoint(which);
+ if (err < 0)
+ return err;
+
+ *off += count;
+
+ return count;
+}
+
+/* Generic read callback that just prints out the available crash types */
+static ssize_t lkdtm_debugfs_read(struct file *f, char __user *user_buf,
+ size_t count, loff_t *off)
+{
+ char *buf;
+ int i, n, out;
+
+ buf = (char *)__get_free_page(GFP_KERNEL);
+
+ n = snprintf(buf, PAGE_SIZE, "Available crash types:\n");
+ for (i = 0; i < ARRAY_SIZE(cp_type); i++)
+ n += snprintf(buf + n, PAGE_SIZE - n, "%s\n", cp_type[i]);
+ buf[n] = '\0';
+
+ out = simple_read_from_buffer(user_buf, count, off,
+ buf, n);
+ free_page((unsigned long) buf);
+
+ return out;
+}
+
+static int lkdtm_debugfs_open(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+
+static ssize_t int_hardware_entry(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(INT_HARDWARE_ENTRY, f, buf, count, off);
+}
+
+static ssize_t int_hw_irq_en(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(INT_HW_IRQ_EN, f, buf, count, off);
+}
+
+static ssize_t int_tasklet_entry(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(INT_TASKLET_ENTRY, f, buf, count, off);
+}
+
+static ssize_t fs_devrw_entry(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(FS_DEVRW, f, buf, count, off);
+}
+
+static ssize_t mem_swapout_entry(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(MEM_SWAPOUT, f, buf, count, off);
+}
+
+static ssize_t timeradd_entry(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(TIMERADD, f, buf, count, off);
+}
+
+static ssize_t scsi_dispatch_cmd_entry(struct file *f,
+ const char __user *buf, size_t count, loff_t *off)
+{
+ return do_register_entry(SCSI_DISPATCH_CMD, f, buf, count, off);
+}
+
+static ssize_t ide_core_cp_entry(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ return do_register_entry(IDE_CORE_CP, f, buf, count, off);
+}
+
+/* Special entry to just crash directly. Available without KPROBEs */
+static ssize_t direct_entry(struct file *f, const char __user *user_buf,
+ size_t count, loff_t *off)
+{
+ enum ctype type;
+ char *buf;
+
+ if (count >= PAGE_SIZE)
+ return -EINVAL;
+ if (count < 1)
+ return -EINVAL;
+
+ buf = (char *)__get_free_page(GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ if (copy_from_user(buf, user_buf, count)) {
+ free_page((unsigned long) buf);
+ return -EFAULT;
+ }
+ /* NULL-terminate and remove enter */
+ buf[count] = '\0';
+ strim(buf);
+
+ type = parse_cp_type(buf, count);
+ free_page((unsigned long) buf);
+ if (type == NONE)
+ return -EINVAL;
+
+ printk(KERN_INFO "lkdtm: Performing direct entry %s\n",
+ cp_type_to_str(type));
+ lkdtm_do_action(type);
+ *off += count;
+
+ return count;
+}
+
+struct crash_entry {
+ const char *name;
+ const struct file_operations fops;
+};
+
+static const struct crash_entry crash_entries[] = {
+ {"DIRECT", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = direct_entry} },
+ {"INT_HARDWARE_ENTRY", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = int_hardware_entry} },
+ {"INT_HW_IRQ_EN", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = int_hw_irq_en} },
+ {"INT_TASKLET_ENTRY", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = int_tasklet_entry} },
+ {"FS_DEVRW", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = fs_devrw_entry} },
+ {"MEM_SWAPOUT", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = mem_swapout_entry} },
+ {"TIMERADD", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = timeradd_entry} },
+ {"SCSI_DISPATCH_CMD", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = scsi_dispatch_cmd_entry} },
+ {"IDE_CORE_CP", {.read = lkdtm_debugfs_read,
+ .open = lkdtm_debugfs_open,
+ .write = ide_core_cp_entry} },
+};
+
+static struct dentry *lkdtm_debugfs_root;
+
+static int __init lkdtm_module_init(void)
+{
+ int ret = -EINVAL;
+ int n_debugfs_entries = 1; /* Assume only the direct entry */
+ int i;
+
+ /* Register debugfs interface */
+ lkdtm_debugfs_root = debugfs_create_dir("provoke-crash", NULL);
+ if (!lkdtm_debugfs_root) {
+ printk(KERN_ERR "lkdtm: creating root dir failed\n");
+ return -ENODEV;
+ }
+
+#ifdef CONFIG_KPROBES
+ n_debugfs_entries = ARRAY_SIZE(crash_entries);
+#endif
+
+ for (i = 0; i < n_debugfs_entries; i++) {
+ const struct crash_entry *cur = &crash_entries[i];
+ struct dentry *de;
+
+ de = debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root,
+ NULL, &cur->fops);
+ if (de == NULL) {
+ printk(KERN_ERR "lkdtm: could not create %s\n",
+ cur->name);
+ goto out_err;
+ }
+ }
+
+ if (lkdtm_parse_commandline() == -EINVAL) {
+ printk(KERN_INFO "lkdtm: Invalid command\n");
+ goto out_err;
+ }
+
+ if (cpoint != INVALID && cptype != NONE) {
+ ret = lkdtm_register_cpoint(cpoint);
+ if (ret < 0) {
+ printk(KERN_INFO "lkdtm: Invalid crash point %d\n",
+ cpoint);
+ goto out_err;
+ }
+ printk(KERN_INFO "lkdtm: Crash point %s of type %s registered\n",
+ cpoint_name, cpoint_type);
+ } else {
+ printk(KERN_INFO "lkdtm: No crash points registered, enable through debugfs\n");
}
- printk(KERN_INFO "lkdtm : Crash point %s of type %s registered\n",
- cpoint_name, cpoint_type);
return 0;
+
+out_err:
+ debugfs_remove_recursive(lkdtm_debugfs_root);
+ return ret;
}
static void __exit lkdtm_module_exit(void)
{
- unregister_jprobe(&lkdtm);
- printk(KERN_INFO "lkdtm : Crash point unregistered\n");
+ debugfs_remove_recursive(lkdtm_debugfs_root);
+
+ unregister_jprobe(&lkdtm);
+ printk(KERN_INFO "lkdtm: Crash point unregistered\n");
}
module_init(lkdtm_module_init);
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index 04c27266f56..779aa8ebe4c 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -497,12 +497,7 @@ static struct pci_driver phantom_pci_driver = {
.resume = phantom_resume
};
-static ssize_t phantom_show_version(struct class *cls, char *buf)
-{
- return sprintf(buf, PHANTOM_VERSION "\n");
-}
-
-static CLASS_ATTR(version, 0444, phantom_show_version, NULL);
+static CLASS_ATTR_STRING(version, 0444, PHANTOM_VERSION);
static int __init phantom_init(void)
{
@@ -515,7 +510,7 @@ static int __init phantom_init(void)
printk(KERN_ERR "phantom: can't register phantom class\n");
goto err;
}
- retval = class_create_file(phantom_class, &class_attr_version);
+ retval = class_create_file(phantom_class, &class_attr_version.attr);
if (retval) {
printk(KERN_ERR "phantom: can't create sysfs version file\n");
goto err_class;
@@ -541,7 +536,7 @@ static int __init phantom_init(void)
err_unchr:
unregister_chrdev_region(dev, PHANTOM_MAX_MINORS);
err_attr:
- class_remove_file(phantom_class, &class_attr_version);
+ class_remove_file(phantom_class, &class_attr_version.attr);
err_class:
class_destroy(phantom_class);
err:
@@ -554,7 +549,7 @@ static void __exit phantom_exit(void)
unregister_chrdev_region(MKDEV(phantom_major, 0), PHANTOM_MAX_MINORS);
- class_remove_file(phantom_class, &class_attr_version);
+ class_remove_file(phantom_class, &class_attr_version.attr);
class_destroy(phantom_class);
pr_debug("phantom: module successfully removed\n");
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 02a77b8b8ee..7a8b9068ea0 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -516,8 +516,7 @@ struct gru_blade_state {
/* Scan all active GRUs in a GRU bitmap */
#define for_each_gru_in_bitmap(gid, map) \
- for ((gid) = find_first_bit((map), GRU_MAX_GRUS); (gid) < GRU_MAX_GRUS;\
- (gid)++, (gid) = find_next_bit((map), GRU_MAX_GRUS, (gid)))
+ for_each_set_bit((gid), (map), GRU_MAX_GRUS)
/* Scan all active GRUs on a specific blade */
#define for_each_gru_on_blade(gru, nid, i) \
@@ -536,23 +535,17 @@ struct gru_blade_state {
/* Scan each CBR whose bit is set in a TFM (or copy of) */
#define for_each_cbr_in_tfm(i, map) \
- for ((i) = find_first_bit(map, GRU_NUM_CBE); \
- (i) < GRU_NUM_CBE; \
- (i)++, (i) = find_next_bit(map, GRU_NUM_CBE, i))
+ for_each_set_bit((i), (map), GRU_NUM_CBE)
/* Scan each CBR in a CBR bitmap. Note: multiple CBRs in an allocation unit */
#define for_each_cbr_in_allocation_map(i, map, k) \
- for ((k) = find_first_bit(map, GRU_CBR_AU); (k) < GRU_CBR_AU; \
- (k) = find_next_bit(map, GRU_CBR_AU, (k) + 1)) \
+ for_each_set_bit((k), (map), GRU_CBR_AU) \
for ((i) = (k)*GRU_CBR_AU_SIZE; \
(i) < ((k) + 1) * GRU_CBR_AU_SIZE; (i)++)
/* Scan each DSR in a DSR bitmap. Note: multiple DSRs in an allocation unit */
#define for_each_dsr_in_allocation_map(i, map, k) \
- for ((k) = find_first_bit((const unsigned long *)map, GRU_DSR_AU);\
- (k) < GRU_DSR_AU; \
- (k) = find_next_bit((const unsigned long *)map, \
- GRU_DSR_AU, (k) + 1)) \
+ for_each_set_bit((k), (const unsigned long *)(map), GRU_DSR_AU) \
for ((i) = (k) * GRU_DSR_AU_CL; \
(i) < ((k) + 1) * GRU_DSR_AU_CL; (i)++)
diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c
index 16f0abda142..57b152f8d1b 100644
--- a/drivers/misc/sgi-xp/xpnet.c
+++ b/drivers/misc/sgi-xp/xpnet.c
@@ -475,7 +475,7 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (skb->data[0] == 0xff) {
/* we are being asked to broadcast to all partitions */
- for_each_bit(dest_partid, xpnet_broadcast_partitions,
+ for_each_set_bit(dest_partid, xpnet_broadcast_partitions,
xp_max_npartitions) {
xpnet_send(skb, queued_msg, start_addr, end_addr,
diff --git a/drivers/misc/tsl2550.c b/drivers/misc/tsl2550.c
new file mode 100644
index 00000000000..483ae5f7f68
--- /dev/null
+++ b/drivers/misc/tsl2550.c
@@ -0,0 +1,473 @@
+/*
+ * tsl2550.c - Linux kernel modules for ambient light sensor
+ *
+ * Copyright (C) 2007 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (C) 2007 Eurotech S.p.A. <info@eurotech.it>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+
+#define TSL2550_DRV_NAME "tsl2550"
+#define DRIVER_VERSION "1.2"
+
+/*
+ * Defines
+ */
+
+#define TSL2550_POWER_DOWN 0x00
+#define TSL2550_POWER_UP 0x03
+#define TSL2550_STANDARD_RANGE 0x18
+#define TSL2550_EXTENDED_RANGE 0x1d
+#define TSL2550_READ_ADC0 0x43
+#define TSL2550_READ_ADC1 0x83
+
+/*
+ * Structs
+ */
+
+struct tsl2550_data {
+ struct i2c_client *client;
+ struct mutex update_lock;
+
+ unsigned int power_state:1;
+ unsigned int operating_mode:1;
+};
+
+/*
+ * Global data
+ */
+
+static const u8 TSL2550_MODE_RANGE[2] = {
+ TSL2550_STANDARD_RANGE, TSL2550_EXTENDED_RANGE,
+};
+
+/*
+ * Management functions
+ */
+
+static int tsl2550_set_operating_mode(struct i2c_client *client, int mode)
+{
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+
+ int ret = i2c_smbus_write_byte(client, TSL2550_MODE_RANGE[mode]);
+
+ data->operating_mode = mode;
+
+ return ret;
+}
+
+static int tsl2550_set_power_state(struct i2c_client *client, int state)
+{
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+ int ret;
+
+ if (state == 0)
+ ret = i2c_smbus_write_byte(client, TSL2550_POWER_DOWN);
+ else {
+ ret = i2c_smbus_write_byte(client, TSL2550_POWER_UP);
+
+ /* On power up we should reset operating mode also... */
+ tsl2550_set_operating_mode(client, data->operating_mode);
+ }
+
+ data->power_state = state;
+
+ return ret;
+}
+
+static int tsl2550_get_adc_value(struct i2c_client *client, u8 cmd)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, cmd);
+ if (ret < 0)
+ return ret;
+ if (!(ret & 0x80))
+ return -EAGAIN;
+ return ret & 0x7f; /* remove the "valid" bit */
+}
+
+/*
+ * LUX calculation
+ */
+
+#define TSL2550_MAX_LUX 1846
+
+static const u8 ratio_lut[] = {
+ 100, 100, 100, 100, 100, 100, 100, 100,
+ 100, 100, 100, 100, 100, 100, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 98, 98, 98, 98, 98,
+ 98, 98, 97, 97, 97, 97, 97, 96,
+ 96, 96, 96, 95, 95, 95, 94, 94,
+ 93, 93, 93, 92, 92, 91, 91, 90,
+ 89, 89, 88, 87, 87, 86, 85, 84,
+ 83, 82, 81, 80, 79, 78, 77, 75,
+ 74, 73, 71, 69, 68, 66, 64, 62,
+ 60, 58, 56, 54, 52, 49, 47, 44,
+ 42, 41, 40, 40, 39, 39, 38, 38,
+ 37, 37, 37, 36, 36, 36, 35, 35,
+ 35, 35, 34, 34, 34, 34, 33, 33,
+ 33, 33, 32, 32, 32, 32, 32, 31,
+ 31, 31, 31, 31, 30, 30, 30, 30,
+ 30,
+};
+
+static const u16 count_lut[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15,
+ 16, 18, 20, 22, 24, 26, 28, 30,
+ 32, 34, 36, 38, 40, 42, 44, 46,
+ 49, 53, 57, 61, 65, 69, 73, 77,
+ 81, 85, 89, 93, 97, 101, 105, 109,
+ 115, 123, 131, 139, 147, 155, 163, 171,
+ 179, 187, 195, 203, 211, 219, 227, 235,
+ 247, 263, 279, 295, 311, 327, 343, 359,
+ 375, 391, 407, 423, 439, 455, 471, 487,
+ 511, 543, 575, 607, 639, 671, 703, 735,
+ 767, 799, 831, 863, 895, 927, 959, 991,
+ 1039, 1103, 1167, 1231, 1295, 1359, 1423, 1487,
+ 1551, 1615, 1679, 1743, 1807, 1871, 1935, 1999,
+ 2095, 2223, 2351, 2479, 2607, 2735, 2863, 2991,
+ 3119, 3247, 3375, 3503, 3631, 3759, 3887, 4015,
+};
+
+/*
+ * This function is described into Taos TSL2550 Designer's Notebook
+ * pages 2, 3.
+ */
+static int tsl2550_calculate_lux(u8 ch0, u8 ch1)
+{
+ unsigned int lux;
+
+ /* Look up count from channel values */
+ u16 c0 = count_lut[ch0];
+ u16 c1 = count_lut[ch1];
+
+ /*
+ * Calculate ratio.
+ * Note: the "128" is a scaling factor
+ */
+ u8 r = 128;
+
+ /* Avoid division by 0 and count 1 cannot be greater than count 0 */
+ if (c1 <= c0)
+ if (c0) {
+ r = c1 * 128 / c0;
+
+ /* Calculate LUX */
+ lux = ((c0 - c1) * ratio_lut[r]) / 256;
+ } else
+ lux = 0;
+ else
+ return -EAGAIN;
+
+ /* LUX range check */
+ return lux > TSL2550_MAX_LUX ? TSL2550_MAX_LUX : lux;
+}
+
+/*
+ * SysFS support
+ */
+
+static ssize_t tsl2550_show_power_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2550_data *data = i2c_get_clientdata(to_i2c_client(dev));
+
+ return sprintf(buf, "%u\n", data->power_state);
+}
+
+static ssize_t tsl2550_store_power_state(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ int ret;
+
+ if (val < 0 || val > 1)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ ret = tsl2550_set_power_state(client, val);
+ mutex_unlock(&data->update_lock);
+
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(power_state, S_IWUSR | S_IRUGO,
+ tsl2550_show_power_state, tsl2550_store_power_state);
+
+static ssize_t tsl2550_show_operating_mode(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct tsl2550_data *data = i2c_get_clientdata(to_i2c_client(dev));
+
+ return sprintf(buf, "%u\n", data->operating_mode);
+}
+
+static ssize_t tsl2550_store_operating_mode(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ int ret;
+
+ if (val < 0 || val > 1)
+ return -EINVAL;
+
+ if (data->power_state == 0)
+ return -EBUSY;
+
+ mutex_lock(&data->update_lock);
+ ret = tsl2550_set_operating_mode(client, val);
+ mutex_unlock(&data->update_lock);
+
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(operating_mode, S_IWUSR | S_IRUGO,
+ tsl2550_show_operating_mode, tsl2550_store_operating_mode);
+
+static ssize_t __tsl2550_show_lux(struct i2c_client *client, char *buf)
+{
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+ u8 ch0, ch1;
+ int ret;
+
+ ret = tsl2550_get_adc_value(client, TSL2550_READ_ADC0);
+ if (ret < 0)
+ return ret;
+ ch0 = ret;
+
+ ret = tsl2550_get_adc_value(client, TSL2550_READ_ADC1);
+ if (ret < 0)
+ return ret;
+ ch1 = ret;
+
+ /* Do the job */
+ ret = tsl2550_calculate_lux(ch0, ch1);
+ if (ret < 0)
+ return ret;
+ if (data->operating_mode == 1)
+ ret *= 5;
+
+ return sprintf(buf, "%d\n", ret);
+}
+
+static ssize_t tsl2550_show_lux1_input(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+ int ret;
+
+ /* No LUX data if not operational */
+ if (!data->power_state)
+ return -EBUSY;
+
+ mutex_lock(&data->update_lock);
+ ret = __tsl2550_show_lux(client, buf);
+ mutex_unlock(&data->update_lock);
+
+ return ret;
+}
+
+static DEVICE_ATTR(lux1_input, S_IRUGO,
+ tsl2550_show_lux1_input, NULL);
+
+static struct attribute *tsl2550_attributes[] = {
+ &dev_attr_power_state.attr,
+ &dev_attr_operating_mode.attr,
+ &dev_attr_lux1_input.attr,
+ NULL
+};
+
+static const struct attribute_group tsl2550_attr_group = {
+ .attrs = tsl2550_attributes,
+};
+
+/*
+ * Initialization function
+ */
+
+static int tsl2550_init_client(struct i2c_client *client)
+{
+ struct tsl2550_data *data = i2c_get_clientdata(client);
+ int err;
+
+ /*
+ * Probe the chip. To do so we try to power up the device and then to
+ * read back the 0x03 code
+ */
+ err = i2c_smbus_read_byte_data(client, TSL2550_POWER_UP);
+ if (err < 0)
+ return err;
+ if (err != TSL2550_POWER_UP)
+ return -ENODEV;
+ data->power_state = 1;
+
+ /* Set the default operating mode */
+ err = i2c_smbus_write_byte(client,
+ TSL2550_MODE_RANGE[data->operating_mode]);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+/*
+ * I2C init/probing/exit functions
+ */
+
+static struct i2c_driver tsl2550_driver;
+static int __devinit tsl2550_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct tsl2550_data *data;
+ int *opmode, err = 0;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE
+ | I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
+ err = -EIO;
+ goto exit;
+ }
+
+ data = kzalloc(sizeof(struct tsl2550_data), GFP_KERNEL);
+ if (!data) {
+ err = -ENOMEM;
+ goto exit;
+ }
+ data->client = client;
+ i2c_set_clientdata(client, data);
+
+ /* Check platform data */
+ opmode = client->dev.platform_data;
+ if (opmode) {
+ if (*opmode < 0 || *opmode > 1) {
+ dev_err(&client->dev, "invalid operating_mode (%d)\n",
+ *opmode);
+ err = -EINVAL;
+ goto exit_kfree;
+ }
+ data->operating_mode = *opmode;
+ } else
+ data->operating_mode = 0; /* default mode is standard */
+ dev_info(&client->dev, "%s operating mode\n",
+ data->operating_mode ? "extended" : "standard");
+
+ mutex_init(&data->update_lock);
+
+ /* Initialize the TSL2550 chip */
+ err = tsl2550_init_client(client);
+ if (err)
+ goto exit_kfree;
+
+ /* Register sysfs hooks */
+ err = sysfs_create_group(&client->dev.kobj, &tsl2550_attr_group);
+ if (err)
+ goto exit_kfree;
+
+ dev_info(&client->dev, "support ver. %s enabled\n", DRIVER_VERSION);
+
+ return 0;
+
+exit_kfree:
+ kfree(data);
+exit:
+ return err;
+}
+
+static int __devexit tsl2550_remove(struct i2c_client *client)
+{
+ sysfs_remove_group(&client->dev.kobj, &tsl2550_attr_group);
+
+ /* Power down the device */
+ tsl2550_set_power_state(client, 0);
+
+ kfree(i2c_get_clientdata(client));
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int tsl2550_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+ return tsl2550_set_power_state(client, 0);
+}
+
+static int tsl2550_resume(struct i2c_client *client)
+{
+ return tsl2550_set_power_state(client, 1);
+}
+
+#else
+
+#define tsl2550_suspend NULL
+#define tsl2550_resume NULL
+
+#endif /* CONFIG_PM */
+
+static const struct i2c_device_id tsl2550_id[] = {
+ { "tsl2550", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tsl2550_id);
+
+static struct i2c_driver tsl2550_driver = {
+ .driver = {
+ .name = TSL2550_DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .suspend = tsl2550_suspend,
+ .resume = tsl2550_resume,
+ .probe = tsl2550_probe,
+ .remove = __devexit_p(tsl2550_remove),
+ .id_table = tsl2550_id,
+};
+
+static int __init tsl2550_init(void)
+{
+ return i2c_add_driver(&tsl2550_driver);
+}
+
+static void __exit tsl2550_exit(void)
+{
+ i2c_del_driver(&tsl2550_driver);
+}
+
+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
+MODULE_DESCRIPTION("TSL2550 ambient light sensor driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+module_init(tsl2550_init);
+module_exit(tsl2550_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 16:01:32 +0000