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authorLinus Torvalds <torvalds@linux-foundation.org>2011-08-26 13:05:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-26 13:05:09 -0700
commit3ab47029d91993745212624e49d16a75abc8f207 (patch)
treee0953f10e43bfaa9a3567ebe2c45a20a21d8e80b
parent0cf0adb073908a66b6875ef8e016b235b9d43ee3 (diff)
parent651d62a8b0378b911f083a1712d9d228894f46d8 (diff)
downloadlinux-stericsson-3ab47029d91993745212624e49d16a75abc8f207.tar.gz
Merge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: drivers:misc: ti-st: fix unexpected UART close drivers:misc: ti-st: free skb on firmware download drivers:misc: ti-st: wait for completion at fail drivers:misc: ti-st: reinit completion before send drivers:misc: ti-st: fail-safe on wrong pkt type drivers:misc: ti-st: reinit completion on ver read drivers:misc:ti-st: platform hooks for chip states drivers:misc: ti-st: avoid a misleading dbg msg base/devres.c: quiet sparse noise about context imbalance pti: add missing CONFIG_PCI dependency drivers/base/devtmpfs.c: correct annotation of `setup_done' driver core: fix kernel-doc warning in platform.c firmware: fix google/gsmi.c build warning
-rw-r--r--drivers/base/devres.c1
-rw-r--r--drivers/base/devtmpfs.c2
-rw-r--r--drivers/base/platform.c2
-rw-r--r--drivers/firmware/google/gsmi.c2
-rw-r--r--drivers/misc/Kconfig1
-rw-r--r--drivers/misc/ti-st/st_core.c10
-rw-r--r--drivers/misc/ti-st/st_kim.c33
-rw-r--r--drivers/misc/ti-st/st_ll.c19
-rw-r--r--include/linux/ti_wilink_st.h27
9 files changed, 92 insertions, 5 deletions
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index cf7a0c788052..65cd74832450 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -397,6 +397,7 @@ static int remove_nodes(struct device *dev,
static int release_nodes(struct device *dev, struct list_head *first,
struct list_head *end, unsigned long flags)
+ __releases(&dev->devres_lock)
{
LIST_HEAD(todo);
int cnt;
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 33e1bed68fdd..a4760e095ff5 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -376,7 +376,7 @@ int devtmpfs_mount(const char *mntdir)
return err;
}
-static __initdata DECLARE_COMPLETION(setup_done);
+static DECLARE_COMPLETION(setup_done);
static int handle(const char *name, mode_t mode, struct device *dev)
{
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 0cad9c7f6bb5..99a5272d7c2f 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -33,7 +33,7 @@ EXPORT_SYMBOL_GPL(platform_bus);
/**
* arch_setup_pdev_archdata - Allow manipulation of archdata before its used
- * @dev: platform device
+ * @pdev: platform device
*
* This is called before platform_device_add() such that any pdev_archdata may
* be setup before the platform_notifier is called. So if a user needs to
diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
index 68810fd1a59d..aa83de9db1b9 100644
--- a/drivers/firmware/google/gsmi.c
+++ b/drivers/firmware/google/gsmi.c
@@ -420,7 +420,7 @@ static efi_status_t gsmi_get_next_variable(unsigned long *name_size,
static efi_status_t gsmi_set_variable(efi_char16_t *name,
efi_guid_t *vendor,
- unsigned long attr,
+ u32 attr,
unsigned long data_size,
void *data)
{
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 0a4d86c6c4a4..2d6423c2d193 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -146,6 +146,7 @@ config PHANTOM
config INTEL_MID_PTI
tristate "Parallel Trace Interface for MIPI P1149.7 cJTAG standard"
+ depends on PCI
default n
help
The PTI (Parallel Trace Interface) driver directs
diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c
index 54c91ffe4a91..ba168a7d54d4 100644
--- a/drivers/misc/ti-st/st_core.c
+++ b/drivers/misc/ti-st/st_core.c
@@ -338,6 +338,12 @@ void st_int_recv(void *disc_data,
/* Unknow packet? */
default:
type = *ptr;
+ if (st_gdata->list[type] == NULL) {
+ pr_err("chip/interface misbehavior dropping"
+ " frame starting with 0x%02x", type);
+ goto done;
+
+ }
st_gdata->rx_skb = alloc_skb(
st_gdata->list[type]->max_frame_size,
GFP_ATOMIC);
@@ -354,6 +360,7 @@ void st_int_recv(void *disc_data,
ptr++;
count--;
}
+done:
spin_unlock_irqrestore(&st_gdata->lock, flags);
pr_debug("done %s", __func__);
return;
@@ -717,9 +724,10 @@ static void st_tty_close(struct tty_struct *tty)
*/
spin_lock_irqsave(&st_gdata->lock, flags);
for (i = ST_BT; i < ST_MAX_CHANNELS; i++) {
- if (st_gdata->list[i] != NULL)
+ if (st_gdata->is_registered[i] == true)
pr_err("%d not un-registered", i);
st_gdata->list[i] = NULL;
+ st_gdata->is_registered[i] = false;
}
st_gdata->protos_registered = 0;
spin_unlock_irqrestore(&st_gdata->lock, flags);
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 38fd2f04c07e..3a3580566dfc 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -68,6 +68,7 @@ void validate_firmware_response(struct kim_data_s *kim_gdata)
if (unlikely(skb->data[5] != 0)) {
pr_err("no proper response during fw download");
pr_err("data6 %x", skb->data[5]);
+ kfree_skb(skb);
return; /* keep waiting for the proper response */
}
/* becos of all the script being downloaded */
@@ -210,6 +211,7 @@ static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name)
pr_err(" waiting for ver info- timed out ");
return -ETIMEDOUT;
}
+ INIT_COMPLETION(kim_gdata->kim_rcvd);
version =
MAKEWORD(kim_gdata->resp_buffer[13],
@@ -298,6 +300,7 @@ static long download_firmware(struct kim_data_s *kim_gdata)
switch (((struct bts_action *)ptr)->type) {
case ACTION_SEND_COMMAND: /* action send */
+ pr_debug("S");
action_ptr = &(((struct bts_action *)ptr)->data[0]);
if (unlikely
(((struct hci_command *)action_ptr)->opcode ==
@@ -335,6 +338,10 @@ static long download_firmware(struct kim_data_s *kim_gdata)
release_firmware(kim_gdata->fw_entry);
return -ETIMEDOUT;
}
+ /* reinit completion before sending for the
+ * relevant wait
+ */
+ INIT_COMPLETION(kim_gdata->kim_rcvd);
/*
* Free space found in uart buffer, call st_int_write
@@ -361,6 +368,7 @@ static long download_firmware(struct kim_data_s *kim_gdata)
}
break;
case ACTION_WAIT_EVENT: /* wait */
+ pr_debug("W");
if (!wait_for_completion_timeout
(&kim_gdata->kim_rcvd,
msecs_to_jiffies(CMD_RESP_TIME))) {
@@ -434,11 +442,17 @@ long st_kim_start(void *kim_data)
{
long err = 0;
long retry = POR_RETRY_COUNT;
+ struct ti_st_plat_data *pdata;
struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
pr_info(" %s", __func__);
+ pdata = kim_gdata->kim_pdev->dev.platform_data;
do {
+ /* platform specific enabling code here */
+ if (pdata->chip_enable)
+ pdata->chip_enable(kim_gdata);
+
/* Configure BT nShutdown to HIGH state */
gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
mdelay(5); /* FIXME: a proper toggle */
@@ -460,6 +474,12 @@ long st_kim_start(void *kim_data)
pr_info("ldisc_install = 0");
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
NULL, "install");
+ /* the following wait is never going to be completed,
+ * since the ldisc was never installed, hence serving
+ * as a mdelay of LDISC_TIME msecs */
+ err = wait_for_completion_timeout
+ (&kim_gdata->ldisc_installed,
+ msecs_to_jiffies(LDISC_TIME));
err = -ETIMEDOUT;
continue;
} else {
@@ -472,6 +492,13 @@ long st_kim_start(void *kim_data)
pr_info("ldisc_install = 0");
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
NULL, "install");
+ /* this wait might be completed, though in the
+ * tty_close() since the ldisc is already
+ * installed */
+ err = wait_for_completion_timeout
+ (&kim_gdata->ldisc_installed,
+ msecs_to_jiffies(LDISC_TIME));
+ err = -EINVAL;
continue;
} else { /* on success don't retry */
break;
@@ -489,6 +516,8 @@ long st_kim_stop(void *kim_data)
{
long err = 0;
struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
+ struct ti_st_plat_data *pdata =
+ kim_gdata->kim_pdev->dev.platform_data;
INIT_COMPLETION(kim_gdata->ldisc_installed);
@@ -515,6 +544,10 @@ long st_kim_stop(void *kim_data)
gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
mdelay(1);
gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
+
+ /* platform specific disable */
+ if (pdata->chip_disable)
+ pdata->chip_disable(kim_gdata);
return err;
}
diff --git a/drivers/misc/ti-st/st_ll.c b/drivers/misc/ti-st/st_ll.c
index 3f2495138855..1ff460a8e9c7 100644
--- a/drivers/misc/ti-st/st_ll.c
+++ b/drivers/misc/ti-st/st_ll.c
@@ -22,6 +22,7 @@
#define pr_fmt(fmt) "(stll) :" fmt
#include <linux/skbuff.h>
#include <linux/module.h>
+#include <linux/platform_device.h>
#include <linux/ti_wilink_st.h>
/**********************************************************************/
@@ -37,6 +38,9 @@ static void send_ll_cmd(struct st_data_s *st_data,
static void ll_device_want_to_sleep(struct st_data_s *st_data)
{
+ struct kim_data_s *kim_data;
+ struct ti_st_plat_data *pdata;
+
pr_debug("%s", __func__);
/* sanity check */
if (st_data->ll_state != ST_LL_AWAKE)
@@ -46,10 +50,19 @@ static void ll_device_want_to_sleep(struct st_data_s *st_data)
send_ll_cmd(st_data, LL_SLEEP_ACK);
/* update state */
st_data->ll_state = ST_LL_ASLEEP;
+
+ /* communicate to platform about chip asleep */
+ kim_data = st_data->kim_data;
+ pdata = kim_data->kim_pdev->dev.platform_data;
+ if (pdata->chip_asleep)
+ pdata->chip_asleep(NULL);
}
static void ll_device_want_to_wakeup(struct st_data_s *st_data)
{
+ struct kim_data_s *kim_data;
+ struct ti_st_plat_data *pdata;
+
/* diff actions in diff states */
switch (st_data->ll_state) {
case ST_LL_ASLEEP:
@@ -70,6 +83,12 @@ static void ll_device_want_to_wakeup(struct st_data_s *st_data)
}
/* update state */
st_data->ll_state = ST_LL_AWAKE;
+
+ /* communicate to platform about chip wakeup */
+ kim_data = st_data->kim_data;
+ pdata = kim_data->kim_pdev->dev.platform_data;
+ if (pdata->chip_asleep)
+ pdata->chip_awake(NULL);
}
/**********************************************************************/
diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h
index b004e557caa9..2ef4385da6bf 100644
--- a/include/linux/ti_wilink_st.h
+++ b/include/linux/ti_wilink_st.h
@@ -410,7 +410,28 @@ struct gps_event_hdr {
u16 plen;
} __attribute__ ((packed));
-/* platform data */
+/**
+ * struct ti_st_plat_data - platform data shared between ST driver and
+ * platform specific board file which adds the ST device.
+ * @nshutdown_gpio: Host's GPIO line to which chip's BT_EN is connected.
+ * @dev_name: The UART/TTY name to which chip is interfaced. (eg: /dev/ttyS1)
+ * @flow_cntrl: Should always be 1, since UART's CTS/RTS is used for PM
+ * purposes.
+ * @baud_rate: The baud rate supported by the Host UART controller, this will
+ * be shared across with the chip via a HCI VS command from User-Space Init
+ * Mgr application.
+ * @suspend:
+ * @resume: legacy PM routines hooked to platform specific board file, so as
+ * to take chip-host interface specific action.
+ * @chip_enable:
+ * @chip_disable: Platform/Interface specific mux mode setting, GPIO
+ * configuring, Host side PM disabling etc.. can be done here.
+ * @chip_asleep:
+ * @chip_awake: Chip specific deep sleep states is communicated to Host
+ * specific board-xx.c to take actions such as cut UART clocks when chip
+ * asleep or run host faster when chip awake etc..
+ *
+ */
struct ti_st_plat_data {
long nshutdown_gpio;
unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */
@@ -418,6 +439,10 @@ struct ti_st_plat_data {
unsigned long baud_rate;
int (*suspend)(struct platform_device *, pm_message_t);
int (*resume)(struct platform_device *);
+ int (*chip_enable) (struct kim_data_s *);
+ int (*chip_disable) (struct kim_data_s *);
+ int (*chip_asleep) (struct kim_data_s *);
+ int (*chip_awake) (struct kim_data_s *);
};
#endif /* TI_WILINK_ST_H */