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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-17 01:05:40 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-17 01:05:40 +0300
commita5e6b135bdff649e4330f98e2e80dbb1984f7e77 (patch)
tree475bfb1163c59d1370fd77415255afba768f9520 /drivers/misc
parent971f115a50afbe409825c9f3399d5a3b9aca4381 (diff)
parent9d90c8d9cde929cbc575098e825d7c29d9f45054 (diff)
downloadlinux-a5e6b135bdff649e4330f98e2e80dbb1984f7e77.tar.xz
Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (50 commits) printk: do not mangle valid userspace syslog prefixes efivars: Add Documentation efivars: Expose efivars functionality to external drivers. efivars: Parameterize operations. efivars: Split out variable registration efivars: parameterize efivars efivars: Make efivars bin_attributes dynamic efivars: move efivars globals into struct efivars drivers:misc: ti-st: fix debugging code kref: Fix typo in kref documentation UIO: add PRUSS UIO driver support Fix spelling mistakes in Documentation/zh_CN/SubmittingPatches firmware: Fix unaligned memory accesses in dmi-sysfs firmware: Add documentation for /sys/firmware/dmi firmware: Expose DMI type 15 System Event Log firmware: Break out system_event_log in dmi-sysfs firmware: Basic dmi-sysfs support firmware: Add DMI entry types to the headers Driver core: convert platform_{get,set}_drvdata to static inline functions Translate linux-2.6/Documentation/magic-number.txt into Chinese ...
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/Kconfig7
-rw-r--r--drivers/misc/pch_phub.c69
-rw-r--r--drivers/misc/ti-st/st_core.c419
-rw-r--r--drivers/misc/ti-st/st_kim.c491
-rw-r--r--drivers/misc/ti-st/st_ll.c10
5 files changed, 448 insertions, 548 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index cc8e49db45fe..b7d5ef234ac9 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -441,7 +441,7 @@ config BMP085
module will be called bmp085.
config PCH_PHUB
- tristate "PCH Packet Hub of Intel Topcliff"
+ tristate "PCH Packet Hub of Intel Topcliff / OKI SEMICONDUCTOR ML7213"
depends on PCI
help
This driver is for PCH(Platform controller Hub) PHUB(Packet Hub) of
@@ -449,6 +449,11 @@ config PCH_PHUB
processor. The Topcliff has MAC address and Option ROM data in SROM.
This driver can access MAC address and Option ROM data in SROM.
+ This driver also can be used for OKI SEMICONDUCTOR's ML7213 which is
+ for IVI(In-Vehicle Infotainment) use.
+ ML7213 is companion chip for Intel Atom E6xx series.
+ ML7213 is completely compatible for Intel EG20T PCH.
+
To compile this driver as a module, choose M here: the module will
be called pch_phub.
diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
index 744b804aca15..98bffc471b17 100644
--- a/drivers/misc/pch_phub.c
+++ b/drivers/misc/pch_phub.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
+ * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
*
* 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
@@ -33,7 +33,12 @@
#define PHUB_TIMEOUT 0x05 /* Time out value for Status Register */
#define PCH_PHUB_ROM_WRITE_ENABLE 0x01 /* Enabling for writing ROM */
#define PCH_PHUB_ROM_WRITE_DISABLE 0x00 /* Disabling for writing ROM */
-#define PCH_PHUB_ROM_START_ADDR 0x14 /* ROM data area start address offset */
+#define PCH_PHUB_MAC_START_ADDR 0x20C /* MAC data area start address offset */
+#define PCH_PHUB_ROM_START_ADDR_EG20T 0x14 /* ROM data area start address offset
+ (Intel EG20T PCH)*/
+#define PCH_PHUB_ROM_START_ADDR_ML7213 0x400 /* ROM data area start address
+ offset(OKI SEMICONDUCTOR ML7213)
+ */
/* MAX number of INT_REDUCE_CONTROL registers */
#define MAX_NUM_INT_REDUCE_CONTROL_REG 128
@@ -42,6 +47,10 @@
#define CLKCFG_CAN_50MHZ 0x12000000
#define CLKCFG_CANCLK_MASK 0xFF000000
+/* Macros for ML7213 */
+#define PCI_VENDOR_ID_ROHM 0x10db
+#define PCI_DEVICE_ID_ROHM_ML7213_PHUB 0x801A
+
/* SROM ACCESS Macro */
#define PCH_WORD_ADDR_MASK (~((1 << 2) - 1))
@@ -298,7 +307,7 @@ static void pch_phub_read_serial_rom_val(struct pch_phub_reg *chip,
{
unsigned int mem_addr;
- mem_addr = PCH_PHUB_ROM_START_ADDR +
+ mem_addr = PCH_PHUB_ROM_START_ADDR_EG20T +
pch_phub_mac_offset[offset_address];
pch_phub_read_serial_rom(chip, mem_addr, data);
@@ -315,7 +324,7 @@ static int pch_phub_write_serial_rom_val(struct pch_phub_reg *chip,
int retval;
unsigned int mem_addr;
- mem_addr = PCH_PHUB_ROM_START_ADDR +
+ mem_addr = PCH_PHUB_ROM_START_ADDR_EG20T +
pch_phub_mac_offset[offset_address];
retval = pch_phub_write_serial_rom(chip, mem_addr, data);
@@ -594,23 +603,38 @@ static int __devinit pch_phub_probe(struct pci_dev *pdev,
"pch_phub_extrom_base_address variable is %p\n", __func__,
chip->pch_phub_extrom_base_address);
- pci_set_drvdata(pdev, chip);
-
- retval = sysfs_create_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr);
- if (retval)
- goto err_sysfs_create;
-
- retval = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
- if (retval)
- goto exit_bin_attr;
-
- pch_phub_read_modify_write_reg(chip, (unsigned int)CLKCFG_REG_OFFSET,
- CLKCFG_CAN_50MHZ, CLKCFG_CANCLK_MASK);
+ if (id->driver_data == 1) {
+ retval = sysfs_create_file(&pdev->dev.kobj,
+ &dev_attr_pch_mac.attr);
+ if (retval)
+ goto err_sysfs_create;
- /* set the prefech value */
- iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
- /* set the interrupt delay value */
- iowrite32(0x25, chip->pch_phub_base_address + 0x44);
+ retval = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
+ if (retval)
+ goto exit_bin_attr;
+
+ pch_phub_read_modify_write_reg(chip,
+ (unsigned int)CLKCFG_REG_OFFSET,
+ CLKCFG_CAN_50MHZ,
+ CLKCFG_CANCLK_MASK);
+
+ /* set the prefech value */
+ iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
+ /* set the interrupt delay value */
+ iowrite32(0x25, chip->pch_phub_base_address + 0x44);
+ } else if (id->driver_data == 2) {
+ retval = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
+ if (retval)
+ goto err_sysfs_create;
+ /* set the prefech value
+ * Device2(USB OHCI #1/ USB EHCI #1/ USB Device):a
+ * Device4(SDIO #0,1,2):f
+ * Device6(SATA 2):f
+ * Device8(USB OHCI #0/ USB EHCI #0):a
+ */
+ iowrite32(0x000affa0, chip->pch_phub_base_address + 0x14);
+ }
+ pci_set_drvdata(pdev, chip);
return 0;
exit_bin_attr:
@@ -687,8 +711,9 @@ static int pch_phub_resume(struct pci_dev *pdev)
#endif /* CONFIG_PM */
static struct pci_device_id pch_phub_pcidev_id[] = {
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PCH1_PHUB)},
- {0,}
+ { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB), 1, },
+ { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7213_PHUB), 2, },
+ { }
};
static struct pci_driver pch_phub_driver = {
diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c
index f9aad06d1ae5..486117f72c9f 100644
--- a/drivers/misc/ti-st/st_core.c
+++ b/drivers/misc/ti-st/st_core.c
@@ -25,10 +25,9 @@
#include <linux/init.h>
#include <linux/tty.h>
-/* understand BT, FM and GPS for now */
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-#include <net/bluetooth/hci.h>
+#include <linux/seq_file.h>
+#include <linux/skbuff.h>
+
#include <linux/ti_wilink_st.h>
/* function pointer pointing to either,
@@ -38,21 +37,38 @@
void (*st_recv) (void*, const unsigned char*, long);
/********************************************************************/
-#if 0
-/* internal misc functions */
-bool is_protocol_list_empty(void)
+static void add_channel_to_table(struct st_data_s *st_gdata,
+ struct st_proto_s *new_proto)
{
- unsigned char i = 0;
- pr_debug(" %s ", __func__);
- for (i = 0; i < ST_MAX; i++) {
- if (st_gdata->list[i] != NULL)
- return ST_NOTEMPTY;
- /* not empty */
+ pr_info("%s: id %d\n", __func__, new_proto->chnl_id);
+ /* list now has the channel id as index itself */
+ st_gdata->list[new_proto->chnl_id] = new_proto;
+}
+
+static void remove_channel_from_table(struct st_data_s *st_gdata,
+ struct st_proto_s *proto)
+{
+ pr_info("%s: id %d\n", __func__, proto->chnl_id);
+ st_gdata->list[proto->chnl_id] = NULL;
+}
+
+/*
+ * called from KIM during firmware download.
+ *
+ * This is a wrapper function to tty->ops->write_room.
+ * It returns number of free space available in
+ * uart tx buffer.
+ */
+int st_get_uart_wr_room(struct st_data_s *st_gdata)
+{
+ struct tty_struct *tty;
+ if (unlikely(st_gdata == NULL || st_gdata->tty == NULL)) {
+ pr_err("tty unavailable to perform write");
+ return -1;
}
- /* list empty */
- return ST_EMPTY;
+ tty = st_gdata->tty;
+ return tty->ops->write_room(tty);
}
-#endif
/* can be called in from
* -- KIM (during fw download)
@@ -67,7 +83,7 @@ int st_int_write(struct st_data_s *st_gdata,
struct tty_struct *tty;
if (unlikely(st_gdata == NULL || st_gdata->tty == NULL)) {
pr_err("tty unavailable to perform write");
- return -1;
+ return -EINVAL;
}
tty = st_gdata->tty;
#ifdef VERBOSE
@@ -82,15 +98,15 @@ int st_int_write(struct st_data_s *st_gdata,
* push the skb received to relevant
* protocol stacks
*/
-void st_send_frame(enum proto_type protoid, struct st_data_s *st_gdata)
+void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
{
- pr_info(" %s(prot:%d) ", __func__, protoid);
+ pr_debug(" %s(prot:%d) ", __func__, chnl_id);
if (unlikely
(st_gdata == NULL || st_gdata->rx_skb == NULL
- || st_gdata->list[protoid] == NULL)) {
- pr_err("protocol %d not registered, no data to send?",
- protoid);
+ || st_gdata->list[chnl_id] == NULL)) {
+ pr_err("chnl_id %d not registered, no data to send?",
+ chnl_id);
kfree_skb(st_gdata->rx_skb);
return;
}
@@ -99,17 +115,17 @@ void st_send_frame(enum proto_type protoid, struct st_data_s *st_gdata)
* - should be just skb_queue_tail for the
* protocol stack driver
*/
- if (likely(st_gdata->list[protoid]->recv != NULL)) {
+ if (likely(st_gdata->list[chnl_id]->recv != NULL)) {
if (unlikely
- (st_gdata->list[protoid]->recv
- (st_gdata->list[protoid]->priv_data, st_gdata->rx_skb)
+ (st_gdata->list[chnl_id]->recv
+ (st_gdata->list[chnl_id]->priv_data, st_gdata->rx_skb)
!= 0)) {
- pr_err(" proto stack %d's ->recv failed", protoid);
+ pr_err(" proto stack %d's ->recv failed", chnl_id);
kfree_skb(st_gdata->rx_skb);
return;
}
} else {
- pr_err(" proto stack %d's ->recv null", protoid);
+ pr_err(" proto stack %d's ->recv null", chnl_id);
kfree_skb(st_gdata->rx_skb);
}
return;
@@ -124,16 +140,22 @@ void st_reg_complete(struct st_data_s *st_gdata, char err)
{
unsigned char i = 0;
pr_info(" %s ", __func__);
- for (i = 0; i < ST_MAX; i++) {
+ for (i = 0; i < ST_MAX_CHANNELS; i++) {
if (likely(st_gdata != NULL && st_gdata->list[i] != NULL &&
- st_gdata->list[i]->reg_complete_cb != NULL))
+ st_gdata->list[i]->reg_complete_cb != NULL)) {
st_gdata->list[i]->reg_complete_cb
(st_gdata->list[i]->priv_data, err);
+ pr_info("protocol %d's cb sent %d\n", i, err);
+ if (err) { /* cleanup registered protocol */
+ st_gdata->protos_registered--;
+ st_gdata->list[i] = NULL;
+ }
+ }
}
}
static inline int st_check_data_len(struct st_data_s *st_gdata,
- int protoid, int len)
+ unsigned char chnl_id, int len)
{
int room = skb_tailroom(st_gdata->rx_skb);
@@ -144,7 +166,7 @@ static inline int st_check_data_len(struct st_data_s *st_gdata,
* has zero length payload. So, ask ST CORE to
* forward the packet to protocol driver (BT/FM/GPS)
*/
- st_send_frame(protoid, st_gdata);
+ st_send_frame(chnl_id, st_gdata);
} else if (len > room) {
/* Received packet's payload length is larger.
@@ -157,7 +179,7 @@ static inline int st_check_data_len(struct st_data_s *st_gdata,
/* Packet header has non-zero payload length and
* we have enough space in created skb. Lets read
* payload data */
- st_gdata->rx_state = ST_BT_W4_DATA;
+ st_gdata->rx_state = ST_W4_DATA;
st_gdata->rx_count = len;
return len;
}
@@ -167,6 +189,7 @@ static inline int st_check_data_len(struct st_data_s *st_gdata,
st_gdata->rx_state = ST_W4_PACKET_TYPE;
st_gdata->rx_skb = NULL;
st_gdata->rx_count = 0;
+ st_gdata->rx_chnl = 0;
return 0;
}
@@ -208,14 +231,12 @@ void st_int_recv(void *disc_data,
const unsigned char *data, long count)
{
char *ptr;
- struct hci_event_hdr *eh;
- struct hci_acl_hdr *ah;
- struct hci_sco_hdr *sh;
- struct fm_event_hdr *fm;
- struct gps_event_hdr *gps;
- int len = 0, type = 0, dlen = 0;
- static enum proto_type protoid = ST_MAX;
+ struct st_proto_s *proto;
+ unsigned short payload_len = 0;
+ int len = 0, type = 0;
+ unsigned char *plen;
struct st_data_s *st_gdata = (struct st_data_s *)disc_data;
+ unsigned long flags;
ptr = (char *)data;
/* tty_receive sent null ? */
@@ -224,10 +245,11 @@ void st_int_recv(void *disc_data,
return;
}
- pr_info("count %ld rx_state %ld"
+ pr_debug("count %ld rx_state %ld"
"rx_count %ld", count, st_gdata->rx_state,
st_gdata->rx_count);
+ spin_lock_irqsave(&st_gdata->lock, flags);
/* Decode received bytes here */
while (count) {
if (st_gdata->rx_count) {
@@ -242,64 +264,36 @@ void st_int_recv(void *disc_data,
/* Check ST RX state machine , where are we? */
switch (st_gdata->rx_state) {
-
- /* Waiting for complete packet ? */
- case ST_BT_W4_DATA:
+ /* Waiting for complete packet ? */
+ case ST_W4_DATA:
pr_debug("Complete pkt received");
-
/* Ask ST CORE to forward
* the packet to protocol driver */
- st_send_frame(protoid, st_gdata);
+ st_send_frame(st_gdata->rx_chnl, st_gdata);
st_gdata->rx_state = ST_W4_PACKET_TYPE;
st_gdata->rx_skb = NULL;
- protoid = ST_MAX; /* is this required ? */
continue;
-
- /* Waiting for Bluetooth event header ? */
- case ST_BT_W4_EVENT_HDR:
- eh = (struct hci_event_hdr *)st_gdata->rx_skb->
- data;
-
- pr_debug("Event header: evt 0x%2.2x"
- "plen %d", eh->evt, eh->plen);
-
- st_check_data_len(st_gdata, protoid, eh->plen);
- continue;
-
- /* Waiting for Bluetooth acl header ? */
- case ST_BT_W4_ACL_HDR:
- ah = (struct hci_acl_hdr *)st_gdata->rx_skb->
- data;
- dlen = __le16_to_cpu(ah->dlen);
-
- pr_info("ACL header: dlen %d", dlen);
-
- st_check_data_len(st_gdata, protoid, dlen);
- continue;
-
- /* Waiting for Bluetooth sco header ? */
- case ST_BT_W4_SCO_HDR:
- sh = (struct hci_sco_hdr *)st_gdata->rx_skb->
- data;
-
- pr_info("SCO header: dlen %d", sh->dlen);
-
- st_check_data_len(st_gdata, protoid, sh->dlen);
- continue;
- case ST_FM_W4_EVENT_HDR:
- fm = (struct fm_event_hdr *)st_gdata->rx_skb->
- data;
- pr_info("FM Header: ");
- st_check_data_len(st_gdata, ST_FM, fm->plen);
- continue;
- /* TODO : Add GPS packet machine logic here */
- case ST_GPS_W4_EVENT_HDR:
- /* [0x09 pkt hdr][R/W byte][2 byte len] */
- gps = (struct gps_event_hdr *)st_gdata->rx_skb->
- data;
- pr_info("GPS Header: ");
- st_check_data_len(st_gdata, ST_GPS, gps->plen);
+ /* parse the header to know details */
+ case ST_W4_HEADER:
+ proto = st_gdata->list[st_gdata->rx_chnl];
+ plen =
+ &st_gdata->rx_skb->data
+ [proto->offset_len_in_hdr];
+ pr_debug("plen pointing to %x\n", *plen);
+ if (proto->len_size == 1)/* 1 byte len field */
+ payload_len = *(unsigned char *)plen;
+ else if (proto->len_size == 2)
+ payload_len =
+ __le16_to_cpu(*(unsigned short *)plen);
+ else
+ pr_info("%s: invalid length "
+ "for id %d\n",
+ __func__, proto->chnl_id);
+ st_check_data_len(st_gdata, proto->chnl_id,
+ payload_len);
+ pr_debug("off %d, pay len %d\n",
+ proto->offset_len_in_hdr, payload_len);
continue;
} /* end of switch rx_state */
}
@@ -308,123 +302,56 @@ void st_int_recv(void *disc_data,
/* Check first byte of packet and identify module
* owner (BT/FM/GPS) */
switch (*ptr) {
-
- /* Bluetooth event packet? */
- case HCI_EVENT_PKT:
- pr_info("Event packet");
- st_gdata->rx_state = ST_BT_W4_EVENT_HDR;
- st_gdata->rx_count = HCI_EVENT_HDR_SIZE;
- type = HCI_EVENT_PKT;
- protoid = ST_BT;
- break;
-
- /* Bluetooth acl packet? */
- case HCI_ACLDATA_PKT:
- pr_info("ACL packet");
- st_gdata->rx_state = ST_BT_W4_ACL_HDR;
- st_gdata->rx_count = HCI_ACL_HDR_SIZE;
- type = HCI_ACLDATA_PKT;
- protoid = ST_BT;
- break;
-
- /* Bluetooth sco packet? */
- case HCI_SCODATA_PKT:
- pr_info("SCO packet");
- st_gdata->rx_state = ST_BT_W4_SCO_HDR;
- st_gdata->rx_count = HCI_SCO_HDR_SIZE;
- type = HCI_SCODATA_PKT;
- protoid = ST_BT;
- break;
-
- /* Channel 8(FM) packet? */
- case ST_FM_CH8_PKT:
- pr_info("FM CH8 packet");
- type = ST_FM_CH8_PKT;
- st_gdata->rx_state = ST_FM_W4_EVENT_HDR;
- st_gdata->rx_count = FM_EVENT_HDR_SIZE;
- protoid = ST_FM;
- break;
-
- /* Channel 9(GPS) packet? */
- case 0x9: /*ST_LL_GPS_CH9_PKT */
- pr_info("GPS CH9 packet");
- type = 0x9; /* ST_LL_GPS_CH9_PKT; */
- protoid = ST_GPS;
- st_gdata->rx_state = ST_GPS_W4_EVENT_HDR;
- st_gdata->rx_count = 3; /* GPS_EVENT_HDR_SIZE -1*/
- break;
case LL_SLEEP_IND:
case LL_SLEEP_ACK:
case LL_WAKE_UP_IND:
- pr_info("PM packet");
+ pr_debug("PM packet");
/* this takes appropriate action based on
* sleep state received --
*/
st_ll_sleep_state(st_gdata, *ptr);
+ /* if WAKEUP_IND collides copy from waitq to txq
+ * and assume chip awake
+ */
+ spin_unlock_irqrestore(&st_gdata->lock, flags);
+ if (st_ll_getstate(st_gdata) == ST_LL_AWAKE)
+ st_wakeup_ack(st_gdata, LL_WAKE_UP_ACK);
+ spin_lock_irqsave(&st_gdata->lock, flags);
+
ptr++;
count--;
continue;
case LL_WAKE_UP_ACK:
- pr_info("PM packet");
+ pr_debug("PM packet");
+
+ spin_unlock_irqrestore(&st_gdata->lock, flags);
/* wake up ack received */
st_wakeup_ack(st_gdata, *ptr);
+ spin_lock_irqsave(&st_gdata->lock, flags);
+
ptr++;
count--;
continue;
/* Unknow packet? */
default:
- pr_err("Unknown packet type %2.2x", (__u8) *ptr);
- ptr++;
- count--;
- continue;
+ type = *ptr;
+ st_gdata->rx_skb = alloc_skb(
+ st_gdata->list[type]->max_frame_size,
+ GFP_ATOMIC);
+ skb_reserve(st_gdata->rx_skb,
+ st_gdata->list[type]->reserve);
+ /* next 2 required for BT only */
+ st_gdata->rx_skb->cb[0] = type; /*pkt_type*/
+ st_gdata->rx_skb->cb[1] = 0; /*incoming*/
+ st_gdata->rx_chnl = *ptr;
+ st_gdata->rx_state = ST_W4_HEADER;
+ st_gdata->rx_count = st_gdata->list[type]->hdr_len;
+ pr_debug("rx_count %ld\n", st_gdata->rx_count);
};
ptr++;
count--;
-
- switch (protoid) {
- case ST_BT:
- /* Allocate new packet to hold received data */
- st_gdata->rx_skb =
- bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
- if (!st_gdata->rx_skb) {
- pr_err("Can't allocate mem for new packet");
- st_gdata->rx_state = ST_W4_PACKET_TYPE;
- st_gdata->rx_count = 0;
- return;
- }
- bt_cb(st_gdata->rx_skb)->pkt_type = type;
- break;
- case ST_FM: /* for FM */
- st_gdata->rx_skb =
- alloc_skb(FM_MAX_FRAME_SIZE, GFP_ATOMIC);
- if (!st_gdata->rx_skb) {
- pr_err("Can't allocate mem for new packet");
- st_gdata->rx_state = ST_W4_PACKET_TYPE;
- st_gdata->rx_count = 0;
- return;
- }
- /* place holder 0x08 */
- skb_reserve(st_gdata->rx_skb, 1);
- st_gdata->rx_skb->cb[0] = ST_FM_CH8_PKT;
- break;
- case ST_GPS:
- /* for GPS */
- st_gdata->rx_skb =
- alloc_skb(100 /*GPS_MAX_FRAME_SIZE */ , GFP_ATOMIC);
- if (!st_gdata->rx_skb) {
- pr_err("Can't allocate mem for new packet");
- st_gdata->rx_state = ST_W4_PACKET_TYPE;
- st_gdata->rx_count = 0;
- return;
- }
- /* place holder 0x09 */
- skb_reserve(st_gdata->rx_skb, 1);
- st_gdata->rx_skb->cb[0] = 0x09; /*ST_GPS_CH9_PKT; */
- break;
- case ST_MAX:
- break;
- }
}
+ spin_unlock_irqrestore(&st_gdata->lock, flags);
pr_debug("done %s", __func__);
return;
}
@@ -466,7 +393,7 @@ void st_int_enqueue(struct st_data_s *st_gdata, struct sk_buff *skb)
switch (st_ll_getstate(st_gdata)) {
case ST_LL_AWAKE:
- pr_info("ST LL is AWAKE, sending normally");
+ pr_debug("ST LL is AWAKE, sending normally");
skb_queue_tail(&st_gdata->txq, skb);
break;
case ST_LL_ASLEEP_TO_AWAKE:
@@ -506,7 +433,7 @@ void st_tx_wakeup(struct st_data_s *st_data)
pr_debug("%s", __func__);
/* check for sending & set flag sending here */
if (test_and_set_bit(ST_TX_SENDING, &st_data->tx_state)) {
- pr_info("ST already sending");
+ pr_debug("ST already sending");
/* keep sending */
set_bit(ST_TX_WAKEUP, &st_data->tx_state);
return;
@@ -548,9 +475,9 @@ void kim_st_list_protocols(struct st_data_s *st_gdata, void *buf)
{
seq_printf(buf, "[%d]\nBT=%c\nFM=%c\nGPS=%c\n",
st_gdata->protos_registered,
- st_gdata->list[ST_BT] != NULL ? 'R' : 'U',
- st_gdata->list[ST_FM] != NULL ? 'R' : 'U',
- st_gdata->list[ST_GPS] != NULL ? 'R' : 'U');
+ st_gdata->list[0x04] != NULL ? 'R' : 'U',
+ st_gdata->list[0x08] != NULL ? 'R' : 'U',
+ st_gdata->list[0x09] != NULL ? 'R' : 'U');
}
/********************************************************************/
@@ -565,20 +492,20 @@ long st_register(struct st_proto_s *new_proto)
unsigned long flags = 0;
st_kim_ref(&st_gdata, 0);
- pr_info("%s(%d) ", __func__, new_proto->type);
+ pr_info("%s(%d) ", __func__, new_proto->chnl_id);
if (st_gdata == NULL || new_proto == NULL || new_proto->recv == NULL
|| new_proto->reg_complete_cb == NULL) {
pr_err("gdata/new_proto/recv or reg_complete_cb not ready");
- return -1;
+ return -EINVAL;
}
- if (new_proto->type < ST_BT || new_proto->type >= ST_MAX) {
- pr_err("protocol %d not supported", new_proto->type);
+ if (new_proto->chnl_id >= ST_MAX_CHANNELS) {
+ pr_err("chnl_id %d not supported", new_proto->chnl_id);
return -EPROTONOSUPPORT;
}
- if (st_gdata->list[new_proto->type] != NULL) {
- pr_err("protocol %d already registered", new_proto->type);
+ if (st_gdata->list[new_proto->chnl_id] != NULL) {
+ pr_err("chnl_id %d already registered", new_proto->chnl_id);
return -EALREADY;
}
@@ -586,11 +513,10 @@ long st_register(struct st_proto_s *new_proto)
spin_lock_irqsave(&st_gdata->lock, flags);
if (test_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state)) {
- pr_info(" ST_REG_IN_PROGRESS:%d ", new_proto->type);
+ pr_info(" ST_REG_IN_PROGRESS:%d ", new_proto->chnl_id);
/* fw download in progress */
- st_kim_chip_toggle(new_proto->type, KIM_GPIO_ACTIVE);
- st_gdata->list[new_proto->type] = new_proto;
+ add_channel_to_table(st_gdata, new_proto);
st_gdata->protos_registered++;
new_proto->write = st_write;
@@ -598,7 +524,7 @@ long st_register(struct st_proto_s *new_proto)
spin_unlock_irqrestore(&st_gdata->lock, flags);
return -EINPROGRESS;
} else if (st_gdata->protos_registered == ST_EMPTY) {
- pr_info(" protocol list empty :%d ", new_proto->type);
+ pr_info(" chnl_id list empty :%d ", new_proto->chnl_id);
set_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
st_recv = st_kim_recv;
@@ -616,16 +542,11 @@ long st_register(struct st_proto_s *new_proto)
if ((st_gdata->protos_registered != ST_EMPTY) &&
(test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
pr_err(" KIM failure complete callback ");
- st_reg_complete(st_gdata, -1);
+ st_reg_complete(st_gdata, err);
}
-
- return -1;
+ return -EINVAL;
}
- /* the protocol might require other gpios to be toggled
- */
- st_kim_chip_toggle(new_proto->type, KIM_GPIO_ACTIVE);
-
clear_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
st_recv = st_int_recv;
@@ -642,14 +563,14 @@ long st_register(struct st_proto_s *new_proto)
/* check for already registered once more,
* since the above check is old
*/
- if (st_gdata->list[new_proto->type] != NULL) {
+ if (st_gdata->list[new_proto->chnl_id] != NULL) {
pr_err(" proto %d already registered ",
- new_proto->type);
+ new_proto->chnl_id);
return -EALREADY;
}
spin_lock_irqsave(&st_gdata->lock, flags);
- st_gdata->list[new_proto->type] = new_proto;
+ add_channel_to_table(st_gdata, new_proto);
st_gdata->protos_registered++;
new_proto->write = st_write;
spin_unlock_irqrestore(&st_gdata->lock, flags);
@@ -657,22 +578,7 @@ long st_register(struct st_proto_s *new_proto)
}
/* if fw is already downloaded & new stack registers protocol */
else {
- switch (new_proto->type) {
- case ST_BT:
- /* do nothing */
- break;
- case ST_FM:
- case ST_GPS:
- st_kim_chip_toggle(new_proto->type, KIM_GPIO_ACTIVE);
- break;
- case ST_MAX:
- default:
- pr_err("%d protocol not supported",
- new_proto->type);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- return -EPROTONOSUPPORT;
- }
- st_gdata->list[new_proto->type] = new_proto;
+ add_channel_to_table(st_gdata, new_proto);
st_gdata->protos_registered++;
new_proto->write = st_write;
@@ -680,48 +586,42 @@ long st_register(struct st_proto_s *new_proto)
spin_unlock_irqrestore(&st_gdata->lock, flags);
return err;
}
- pr_debug("done %s(%d) ", __func__, new_proto->type);
+ pr_debug("done %s(%d) ", __func__, new_proto->chnl_id);
}
EXPORT_SYMBOL_GPL(st_register);
/* to unregister a protocol -
* to be called from protocol stack driver
*/
-long st_unregister(enum proto_type type)
+long st_unregister(struct st_proto_s *proto)
{
long err = 0;
unsigned long flags = 0;
struct st_data_s *st_gdata;
- pr_debug("%s: %d ", __func__, type);
+ pr_debug("%s: %d ", __func__, proto->chnl_id);
st_kim_ref(&st_gdata, 0);
- if (type < ST_BT || type >= ST_MAX) {
- pr_err(" protocol %d not supported", type);
+ if (proto->chnl_id >= ST_MAX_CHANNELS) {
+ pr_err(" chnl_id %d not supported", proto->chnl_id);
return -EPROTONOSUPPORT;
}
spin_lock_irqsave(&st_gdata->lock, flags);
- if (st_gdata->list[type] == NULL) {
- pr_err(" protocol %d not registered", type);
+ if (st_gdata->list[proto->chnl_id] == NULL) {
+ pr_err(" chnl_id %d not registered", proto->chnl_id);
spin_unlock_irqrestore(&st_gdata->lock, flags);
return -EPROTONOSUPPORT;
}
st_gdata->protos_registered--;
- st_gdata->list[type] = NULL;
-
- /* kim ignores BT in the below function
- * and handles the rest, BT is toggled
- * only in kim_start and kim_stop
- */
- st_kim_chip_toggle(type, KIM_GPIO_INACTIVE);
+ remove_channel_from_table(st_gdata, proto);
spin_unlock_irqrestore(&st_gdata->lock, flags);
if ((st_gdata->protos_registered == ST_EMPTY) &&
(!test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
- pr_info(" all protocols unregistered ");
+ pr_info(" all chnl_ids unregistered ");
/* stop traffic on tty */
if (st_gdata->tty) {
@@ -729,7 +629,7 @@ long st_unregister(enum proto_type type)
stop_tty(st_gdata->tty);
}
- /* all protocols now unregistered */
+ /* all chnl_ids now unregistered */
st_kim_stop(st_gdata->kim_data);
/* disable ST LL */
st_ll_disable(st_gdata);
@@ -744,37 +644,15 @@ long st_unregister(enum proto_type type)
long st_write(struct sk_buff *skb)
{
struct st_data_s *st_gdata;
-#ifdef DEBUG
- enum proto_type protoid = ST_MAX;
-#endif
long len;
st_kim_ref(&st_gdata, 0);
if (unlikely(skb == NULL || st_gdata == NULL
|| st_gdata->tty == NULL)) {
pr_err("data/tty unavailable to perform write");
- return -1;
+ return -EINVAL;
}
-#ifdef DEBUG /* open-up skb to read the 1st byte */
- switch (skb->data[0]) {
- case HCI_COMMAND_PKT:
- case HCI_ACLDATA_PKT:
- case HCI_SCODATA_PKT:
- protoid = ST_BT;
- break;
- case ST_FM_CH8_PKT:
- protoid = ST_FM;
- break;
- case 0x09:
- protoid = ST_GPS;
- break;
- }
- if (unlikely(st_gdata->list[protoid] == NULL)) {
- pr_err(" protocol %d not registered, and writing? ",
- protoid);
- return -1;
- }
-#endif
+
pr_debug("%d to be written", skb->len);
len = skb->len;
@@ -824,7 +702,7 @@ static int st_tty_open(struct tty_struct *tty)
static void st_tty_close(struct tty_struct *tty)
{
- unsigned char i = ST_MAX;
+ unsigned char i = ST_MAX_CHANNELS;
unsigned long flags = 0;
struct st_data_s *st_gdata = tty->disc_data;
@@ -835,7 +713,7 @@ static void st_tty_close(struct tty_struct *tty)
* un-installed for some reason - what should be done ?
*/
spin_lock_irqsave(&st_gdata->lock, flags);
- for (i = ST_BT; i < ST_MAX; i++) {
+ for (i = ST_BT; i < ST_MAX_CHANNELS; i++) {
if (st_gdata->list[i] != NULL)
pr_err("%d not un-registered", i);
st_gdata->list[i] = NULL;
@@ -869,7 +747,6 @@ static void st_tty_close(struct tty_struct *tty)
static void st_tty_receive(struct tty_struct *tty, const unsigned char *data,
char *tty_flags, int count)
{
-
#ifdef VERBOSE
print_hex_dump(KERN_DEBUG, ">in>", DUMP_PREFIX_NONE,
16, 1, data, count, 0);
@@ -960,7 +837,7 @@ int st_core_init(struct st_data_s **core_data)
err = tty_unregister_ldisc(N_TI_WL);
if (err)
pr_err("unable to un-register ldisc");
- return -1;
+ return err;
}
*core_data = st_gdata;
return 0;
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 73b6c8b0e869..9ee4c788aa69 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -30,50 +30,12 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/sched.h>
-#include <linux/rfkill.h>
-
-/* understand BT events for fw response */
-#include <net/bluetooth/bluetooth.h>
-#include <net/bluetooth/hci_core.h>
-#include <net/bluetooth/hci.h>
+#include <linux/tty.h>
+#include <linux/skbuff.h>
#include <linux/ti_wilink_st.h>
-static int kim_probe(struct platform_device *pdev);
-static int kim_remove(struct platform_device *pdev);
-
-/* KIM platform device driver structure */
-static struct platform_driver kim_platform_driver = {
- .probe = kim_probe,
- .remove = kim_remove,
- /* TODO: ST driver power management during suspend/resume ?
- */
-#if 0
- .suspend = kim_suspend,
- .resume = kim_resume,
-#endif
- .driver = {
- .name = "kim",
- .owner = THIS_MODULE,
- },
-};
-
-static int kim_toggle_radio(void*, bool);
-static const struct rfkill_ops kim_rfkill_ops = {
- .set_block = kim_toggle_radio,
-};
-
-/* strings to be used for rfkill entries and by
- * ST Core to be used for sysfs debug entry
- */
-#define PROTO_ENTRY(type, name) name
-const unsigned char *protocol_names[] = {
- PROTO_ENTRY(ST_BT, "Bluetooth"),
- PROTO_ENTRY(ST_FM, "FM"),
- PROTO_ENTRY(ST_GPS, "GPS"),
-};
-
#define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */
static struct platform_device *st_kim_devices[MAX_ST_DEVICES];
@@ -134,7 +96,7 @@ static inline int kim_check_data_len(struct kim_data_s *kim_gdata, int len)
/* Packet header has non-zero payload length and
* we have enough space in created skb. Lets read
* payload data */
- kim_gdata->rx_state = ST_BT_W4_DATA;
+ kim_gdata->rx_state = ST_W4_DATA;
kim_gdata->rx_count = len;
return len;
}
@@ -158,8 +120,8 @@ void kim_int_recv(struct kim_data_s *kim_gdata,
const unsigned char *data, long count)
{
const unsigned char *ptr;
- struct hci_event_hdr *eh;
int len = 0, type = 0;
+ unsigned char *plen;
pr_debug("%s", __func__);
/* Decode received bytes here */
@@ -183,29 +145,27 @@ void kim_int_recv(struct kim_data_s *kim_gdata,
/* Check ST RX state machine , where are we? */
switch (kim_gdata->rx_state) {
/* Waiting for complete packet ? */
- case ST_BT_W4_DATA:
+ case ST_W4_DATA:
pr_debug("Complete pkt received");
validate_firmware_response(kim_gdata);
kim_gdata->rx_state = ST_W4_PACKET_TYPE;
kim_gdata->rx_skb = NULL;
continue;
/* Waiting for Bluetooth event header ? */
- case ST_BT_W4_EVENT_HDR:
- eh = (struct hci_event_hdr *)kim_gdata->
- rx_skb->data;
- pr_debug("Event header: evt 0x%2.2x"
- "plen %d", eh->evt, eh->plen);
- kim_check_data_len(kim_gdata, eh->plen);
+ case ST_W4_HEADER:
+ plen =
+ (unsigned char *)&kim_gdata->rx_skb->data[1];
+ pr_debug("event hdr: plen 0x%02x\n", *plen);
+ kim_check_data_len(kim_gdata, *plen);
continue;
} /* end of switch */
} /* end of if rx_state */
switch (*ptr) {
/* Bluetooth event packet? */
- case HCI_EVENT_PKT:
- pr_info("Event packet");
- kim_gdata->rx_state = ST_BT_W4_EVENT_HDR;
- kim_gdata->rx_count = HCI_EVENT_HDR_SIZE;
- type = HCI_EVENT_PKT;
+ case 0x04:
+ kim_gdata->rx_state = ST_W4_HEADER;
+ kim_gdata->rx_count = 2;
+ type = *ptr;
break;
default:
pr_info("unknown packet");
@@ -216,16 +176,18 @@ void kim_int_recv(struct kim_data_s *kim_gdata,
ptr++;
count--;
kim_gdata->rx_skb =
- bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ alloc_skb(1024+8, GFP_ATOMIC);
if (!kim_gdata->rx_skb) {
pr_err("can't allocate mem for new packet");
kim_gdata->rx_state = ST_W4_PACKET_TYPE;
kim_gdata->rx_count = 0;
return;
}
- bt_cb(kim_gdata->rx_skb)->pkt_type = type;
+ skb_reserve(kim_gdata->rx_skb, 8);
+ kim_gdata->rx_skb->cb[0] = 4;
+ kim_gdata->rx_skb->cb[1] = 0;
+
}
- pr_info("done %s", __func__);
return;
}
@@ -239,13 +201,13 @@ static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name)
INIT_COMPLETION(kim_gdata->kim_rcvd);
if (4 != st_int_write(kim_gdata->core_data, read_ver_cmd, 4)) {
pr_err("kim: couldn't write 4 bytes");
- return -1;
+ return -EIO;
}
if (!wait_for_completion_timeout
(&kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) {
pr_err(" waiting for ver info- timed out ");
- return -1;
+ return -ETIMEDOUT;
}
version =
@@ -270,6 +232,26 @@ static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name)
return 0;
}
+void skip_change_remote_baud(unsigned char **ptr, long *len)
+{
+ unsigned char *nxt_action, *cur_action;
+ cur_action = *ptr;
+
+ nxt_action = cur_action + sizeof(struct bts_action) +
+ ((struct bts_action *) cur_action)->size;
+
+ if (((struct bts_action *) nxt_action)->type != ACTION_WAIT_EVENT) {
+ pr_err("invalid action after change remote baud command");
+ } else {
+ *ptr = *ptr + sizeof(struct bts_action) +
+ ((struct bts_action *)nxt_action)->size;
+ *len = *len - (sizeof(struct bts_action) +
+ ((struct bts_action *)nxt_action)->size);
+ /* warn user on not commenting these in firmware */
+ pr_warn("skipping the wait event of change remote baud");
+ }
+}
+
/**
* download_firmware -
* internal function which parses through the .bts firmware
@@ -282,6 +264,9 @@ static long download_firmware(struct kim_data_s *kim_gdata)
unsigned char *ptr = NULL;
unsigned char *action_ptr = NULL;
unsigned char bts_scr_name[30] = { 0 }; /* 30 char long bts scr name? */
+ int wr_room_space;
+ int cmd_size;
+ unsigned long timeout;
err = read_local_version(kim_gdata, bts_scr_name);
if (err != 0) {
@@ -295,7 +280,7 @@ static long download_firmware(struct kim_data_s *kim_gdata)
(kim_gdata->fw_entry->size == 0))) {
pr_err(" request_firmware failed(errno %ld) for %s", err,
bts_scr_name);
- return -1;
+ return -EINVAL;
}
ptr = (void *)kim_gdata->fw_entry->data;
len = kim_gdata->fw_entry->size;
@@ -318,29 +303,72 @@ static long download_firmware(struct kim_data_s *kim_gdata)
0xFF36)) {
/* ignore remote change
* baud rate HCI VS command */
- pr_err
- (" change remote baud"
+ pr_warn("change remote baud"
" rate command in firmware");
+ skip_change_remote_baud(&ptr, &len);
break;
}
+ /*
+ * Make sure we have enough free space in uart
+ * tx buffer to write current firmware command
+ */
+ cmd_size = ((struct bts_action *)ptr)->size;
+ timeout = jiffies + msecs_to_jiffies(CMD_WR_TIME);
+ do {
+ wr_room_space =
+ st_get_uart_wr_room(kim_gdata->core_data);
+ if (wr_room_space < 0) {
+ pr_err("Unable to get free "
+ "space info from uart tx buffer");
+ release_firmware(kim_gdata->fw_entry);
+ return wr_room_space;
+ }
+ mdelay(1); /* wait 1ms before checking room */
+ } while ((wr_room_space < cmd_size) &&
+ time_before(jiffies, timeout));
+
+ /* Timeout happened ? */
+ if (time_after_eq(jiffies, timeout)) {
+ pr_err("Timeout while waiting for free "
+ "free space in uart tx buffer");
+ release_firmware(kim_gdata->fw_entry);
+ return -ETIMEDOUT;
+ }
- INIT_COMPLETION(kim_gdata->kim_rcvd);
+ /*
+ * Free space found in uart buffer, call st_int_write
+ * to send current firmware command to the uart tx
+ * buffer.
+ */
err = st_int_write(kim_gdata->core_data,
((struct bts_action_send *)action_ptr)->data,
((struct bts_action *)ptr)->size);
if (unlikely(err < 0)) {
release_firmware(kim_gdata->fw_entry);
- return -1;
+ return err;
}
+ /*
+ * Check number of bytes written to the uart tx buffer
+ * and requested command write size
+ */
+ if (err != cmd_size) {
+ pr_err("Number of bytes written to uart "
+ "tx buffer are not matching with "
+ "requested cmd write size");
+ release_firmware(kim_gdata->fw_entry);
+ return -EIO;
+ }
+ break;
+ case ACTION_WAIT_EVENT: /* wait */
if (!wait_for_completion_timeout
- (&kim_gdata->kim_rcvd,
- msecs_to_jiffies(CMD_RESP_TIME))) {
- pr_err
- (" response timeout during fw download ");
+ (&kim_gdata->kim_rcvd,
+ msecs_to_jiffies(CMD_RESP_TIME))) {
+ pr_err("response timeout during fw download ");
/* timed out */
release_firmware(kim_gdata->fw_entry);
- return -1;
+ return -ETIMEDOUT;
}
+ INIT_COMPLETION(kim_gdata->kim_rcvd);
break;
case ACTION_DELAY: /* sleep */
pr_info("sleep command in scr");
@@ -362,50 +390,6 @@ static long download_firmware(struct kim_data_s *kim_gdata)
/**********************************************************************/
/* functions called from ST core */
-/* function to toggle the GPIO
- * needs to know whether the GPIO is active high or active low
- */
-void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state)
-{
- struct platform_device *kim_pdev;
- struct kim_data_s *kim_gdata;
- pr_info(" %s ", __func__);
-
- kim_pdev = st_get_plat_device(0);
- kim_gdata = dev_get_drvdata(&kim_pdev->dev);
-
- if (kim_gdata->gpios[type] == -1) {
- pr_info(" gpio not requested for protocol %s",
- protocol_names[type]);
- return;
- }
- switch (type) {
- case ST_BT:
- /*Do Nothing */
- break;
-
- case ST_FM:
- if (state == KIM_GPIO_ACTIVE)
- gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_LOW);
- else
- gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_HIGH);
- break;
-
- case ST_GPS:
- if (state == KIM_GPIO_ACTIVE)
- gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_HIGH);
- else
- gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_LOW);
- break;
-
- case ST_MAX:
- default:
- break;
- }
-
- return;
-}
-
/* called from ST Core, when REG_IN_PROGRESS (registration in progress)
* can be because of
* 1. response to read local version
@@ -416,7 +400,6 @@ void st_kim_recv(void *disc_data, const unsigned char *data, long count)
struct st_data_s *st_gdata = (struct st_data_s *)disc_data;
struct kim_data_s *kim_gdata = st_gdata->kim_data;
- pr_info(" %s ", __func__);
/* copy to local buffer */
if (unlikely(data[4] == 0x01 && data[5] == 0x10 && data[0] == 0x04)) {
/* must be the read_ver_cmd */
@@ -455,35 +438,28 @@ long st_kim_start(void *kim_data)
pr_info(" %s", __func__);
do {
- /* TODO: this is only because rfkill sub-system
- * doesn't send events to user-space if the state
- * isn't changed
- */
- rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1);
/* Configure BT nShutdown to HIGH state */
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
mdelay(5); /* FIXME: a proper toggle */
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
mdelay(100);
/* re-initialize the completion */
INIT_COMPLETION(kim_gdata->ldisc_installed);
-#if 0 /* older way of signalling user-space UIM */
- /* send signal to UIM */
- err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 0);
- if (err != 0) {
- pr_info(" sending SIGUSR2 to uim failed %ld", err);
- err = -1;
- continue;
- }
-#endif
- /* unblock and send event to UIM via /dev/rfkill */
- rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 0);
+ /* send notification to UIM */
+ kim_gdata->ldisc_install = 1;
+ pr_info("ldisc_install = 1");
+ sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
+ NULL, "install");
/* wait for ldisc to be installed */
err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
msecs_to_jiffies(LDISC_TIME));
if (!err) { /* timeout */
pr_err("line disc installation timed out ");
- err = -1;
+ kim_gdata->ldisc_install = 0;
+ pr_info("ldisc_install = 0");
+ sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
+ NULL, "install");
+ err = -ETIMEDOUT;
continue;
} else {
/* ldisc installed now */
@@ -491,6 +467,10 @@ long st_kim_start(void *kim_data)
err = download_firmware(kim_gdata);
if (err != 0) {
pr_err("download firmware failed");
+ kim_gdata->ldisc_install = 0;
+ pr_info("ldisc_install = 0");
+ sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
+ NULL, "install");
continue;
} else { /* on success don't retry */
break;
@@ -510,31 +490,30 @@ long st_kim_stop(void *kim_data)
struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
INIT_COMPLETION(kim_gdata->ldisc_installed);
-#if 0 /* older way of signalling user-space UIM */
- /* send signal to UIM */
- err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 1);
- if (err != 0) {
- pr_err("sending SIGUSR2 to uim failed %ld", err);
- return -1;
- }
-#endif
- /* set BT rfkill to be blocked */
- err = rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1);
+
+ /* Flush any pending characters in the driver and discipline. */
+ tty_ldisc_flush(kim_gdata->core_data->tty);
+ tty_driver_flush_buffer(kim_gdata->core_data->tty);
+
+ /* send uninstall notification to UIM */
+ pr_info("ldisc_install = 0");
+ kim_gdata->ldisc_install = 0;
+ sysfs_notify(&kim_gdata->kim_pdev->dev.kobj, NULL, "install");
/* wait for ldisc to be un-installed */
err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
msecs_to_jiffies(LDISC_TIME));
if (!err) { /* timeout */
pr_err(" timed out waiting for ldisc to be un-installed");
- return -1;
+ return -ETIMEDOUT;
}
/* By default configure BT nShutdown to LOW state */
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
mdelay(1);
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_HIGH);
mdelay(1);
- gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
+ gpio_set_value(kim_gdata->nshutdown, GPIO_LOW);
return err;
}
@@ -558,33 +537,59 @@ static int show_list(struct seq_file *s, void *unused)
return 0;
}
-/* function called from rfkill subsystem, when someone from
- * user space would write 0/1 on the sysfs entry
- * /sys/class/rfkill/rfkill0,1,3/state
- */
-static int kim_toggle_radio(void *data, bool blocked)
+static ssize_t show_install(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- enum proto_type type = *((enum proto_type *)data);
- pr_debug(" %s: %d ", __func__, type);
-
- switch (type) {
- case ST_BT:
- /* do nothing */
- break;
- case ST_FM:
- case ST_GPS:
- if (blocked)
- st_kim_chip_toggle(type, KIM_GPIO_INACTIVE);
- else
- st_kim_chip_toggle(type, KIM_GPIO_ACTIVE);
- break;
- case ST_MAX:
- pr_err(" wrong proto type ");
- break;
- }
- return 0;
+ struct kim_data_s *kim_data = dev_get_drvdata(dev);
+ return sprintf(buf, "%d\n", kim_data->ldisc_install);
}
+static ssize_t show_dev_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kim_data_s *kim_data = dev_get_drvdata(dev);
+ return sprintf(buf, "%s\n", kim_data->dev_name);
+}
+
+static ssize_t show_baud_rate(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kim_data_s *kim_data = dev_get_drvdata(dev);
+ return sprintf(buf, "%ld\n", kim_data->baud_rate);
+}
+
+static ssize_t show_flow_cntrl(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct kim_data_s *kim_data = dev_get_drvdata(dev);
+ return sprintf(buf, "%d\n", kim_data->flow_cntrl);
+}
+
+/* structures specific for sysfs entries */
+static struct kobj_attribute ldisc_install =
+__ATTR(install, 0444, (void *)show_install, NULL);
+
+static struct kobj_attribute uart_dev_name =
+__ATTR(dev_name, 0444, (void *)show_dev_name, NULL);
+
+static struct kobj_attribute uart_baud_rate =
+__ATTR(baud_rate, 0444, (void *)show_baud_rate, NULL);
+
+static struct kobj_attribute uart_flow_cntrl =
+__ATTR(flow_cntrl, 0444, (void *)show_flow_cntrl, NULL);
+
+static struct attribute *uim_attrs[] = {
+ &ldisc_install.attr,
+ &uart_dev_name.attr,
+ &uart_baud_rate.attr,
+ &uart_flow_cntrl.attr,
+ NULL,
+};
+
+static struct attribute_group uim_attr_grp = {
+ .attrs = uim_attrs,
+};
+
/**
* st_kim_ref - reference the core's data
* This references the per-ST platform device in the arch/xx/
@@ -637,9 +642,8 @@ struct dentry *kim_debugfs_dir;
static int kim_probe(struct platform_device *pdev)
{
long status;
- long proto;
- long *gpios = pdev->dev.platform_data;
struct kim_data_s *kim_gdata;
+ struct ti_st_plat_data *pdata = pdev->dev.platform_data;
if ((pdev->id != -1) && (pdev->id < MAX_ST_DEVICES)) {
/* multiple devices could exist */
@@ -659,44 +663,24 @@ static int kim_probe(struct platform_device *pdev)
status = st_core_init(&kim_gdata->core_data);
if (status != 0) {
pr_err(" ST core init failed");
- return -1;
+ return -EIO;
}
/* refer to itself */
kim_gdata->core_data->kim_data = kim_gdata;
- for (proto = 0; proto < ST_MAX; proto++) {
- kim_gdata->gpios[proto] = gpios[proto];
- pr_info(" %ld gpio to be requested", gpios[proto]);
+ /* Claim the chip enable nShutdown gpio from the system */
+ kim_gdata->nshutdown = pdata->nshutdown_gpio;
+ status = gpio_request(kim_gdata->nshutdown, "kim");
+ if (unlikely(status)) {
+ pr_err(" gpio %ld request failed ", kim_gdata->nshutdown);
+ return status;
}
- for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
- /* Claim the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- status = gpio_request(gpios[proto], "kim");
- if (unlikely(status)) {
- pr_err(" gpio %ld request failed ", gpios[proto]);
- proto -= 1;
- while (proto >= 0) {
- if (gpios[proto] != -1)
- gpio_free(gpios[proto]);
- }
- return status;
- }
-
- /* Configure nShutdown GPIO as output=0 */
- status =
- gpio_direction_output(gpios[proto], 0);
- if (unlikely(status)) {
- pr_err(" unable to configure gpio %ld",
- gpios[proto]);
- proto -= 1;
- while (proto >= 0) {
- if (gpios[proto] != -1)
- gpio_free(gpios[proto]);
- }
- return status;
- }
+ /* Configure nShutdown GPIO as output=0 */
+ status = gpio_direction_output(kim_gdata->nshutdown, 0);
+ if (unlikely(status)) {
+ pr_err(" unable to configure gpio %ld", kim_gdata->nshutdown);
+ return status;
}
/* get reference of pdev for request_firmware
*/
@@ -704,34 +688,23 @@ static int kim_probe(struct platform_device *pdev)
init_completion(&kim_gdata->kim_rcvd);
init_completion(&kim_gdata->ldisc_installed);
- for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
- /* TODO: should all types be rfkill_type_bt ? */
- kim_gdata->rf_protos[proto] = proto;
- kim_gdata->rfkill[proto] = rfkill_alloc(protocol_names[proto],
- &pdev->dev, RFKILL_TYPE_BLUETOOTH,
- &kim_rfkill_ops, &kim_gdata->rf_protos[proto]);
- if (kim_gdata->rfkill[proto] == NULL) {
- pr_err("cannot create rfkill entry for gpio %ld",
- gpios[proto]);
- continue;
- }
- /* block upon creation */
- rfkill_init_sw_state(kim_gdata->rfkill[proto], 1);
- status = rfkill_register(kim_gdata->rfkill[proto]);
- if (unlikely(status)) {
- pr_err("rfkill registration failed for gpio %ld",
- gpios[proto]);
- rfkill_unregister(kim_gdata->rfkill[proto]);
- continue;
- }
- pr_info("rfkill entry created for %ld", gpios[proto]);
+ status = sysfs_create_group(&pdev->dev.kobj, &uim_attr_grp);
+ if (status) {
+ pr_err("failed to create sysfs entries");
+ return status;
}
+ /* copying platform data */
+ strncpy(kim_gdata->dev_name, pdata->dev_name, UART_DEV_NAME_LEN);
+ kim_gdata->flow_cntrl = pdata->flow_cntrl;
+ kim_gdata->baud_rate = pdata->baud_rate;
+ pr_info("sysfs entries created\n");
+
kim_debugfs_dir = debugfs_create_dir("ti-st", NULL);
if (IS_ERR(kim_debugfs_dir)) {
pr_err(" debugfs entries creation failed ");
kim_debugfs_dir = NULL;
- return -1;
+ return -EIO;
}
debugfs_create_file("version", S_IRUGO, kim_debugfs_dir,
@@ -744,25 +717,22 @@ static int kim_probe(struct platform_device *pdev)
static int kim_remove(struct platform_device *pdev)
{
- /* free the GPIOs requested
- */
- long *gpios = pdev->dev.platform_data;
- long proto;
+ /* free the GPIOs requested */
+ struct ti_st_plat_data *pdata = pdev->dev.platform_data;
struct kim_data_s *kim_gdata;
kim_gdata = dev_get_drvdata(&pdev->dev);
- for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
- /* Claim the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- gpio_free(gpios[proto]);
- rfkill_unregister(kim_gdata->rfkill[proto]);
- rfkill_destroy(kim_gdata->rfkill[proto]);
- kim_gdata->rfkill[proto] = NULL;
- }
- pr_info("kim: GPIO Freed");
+ /* Free the Bluetooth/FM/GPIO
+ * nShutdown gpio from the system
+ */
+ gpio_free(pdata->nshutdown_gpio);
+ pr_info("nshutdown GPIO Freed");
+
debugfs_remove_recursive(kim_debugfs_dir);
+ sysfs_remove_group(&pdev->dev.kobj, &uim_attr_grp);
+ pr_info("sysfs entries removed");
+
kim_gdata->kim_pdev = NULL;
st_core_exit(kim_gdata->core_data);
@@ -771,23 +741,46 @@ static int kim_remove(struct platform_device *pdev)
return 0;
}
+int kim_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct ti_st_plat_data *pdata = pdev->dev.platform_data;
+
+ if (pdata->suspend)
+ return pdata->suspend(pdev, state);
+
+ return -EOPNOTSUPP;
+}
+
+int kim_resume(struct platform_device *pdev)
+{
+ struct ti_st_plat_data *pdata = pdev->dev.platform_data;
+
+ if (pdata->resume)
+ return pdata->resume(pdev);
+
+ return -EOPNOTSUPP;
+}
+
/**********************************************************************/
/* entry point for ST KIM module, called in from ST Core */
+static struct platform_driver kim_platform_driver = {
+ .probe = kim_probe,
+ .remove = kim_remove,
+ .suspend = kim_suspend,
+ .resume = kim_resume,
+ .driver = {
+ .name = "kim",
+ .owner = THIS_MODULE,
+ },
+};
static int __init st_kim_init(void)
{
- long ret = 0;
- ret = platform_driver_register(&kim_platform_driver);
- if (ret != 0) {
- pr_err("platform drv registration failed");
- return -1;
- }
- return 0;
+ return platform_driver_register(&kim_platform_driver);
}
static void __exit st_kim_deinit(void)
{
- /* the following returns void */
platform_driver_unregister(&kim_platform_driver);
}
diff --git a/drivers/misc/ti-st/st_ll.c b/drivers/misc/ti-st/st_ll.c
index 2bda8dea15b0..3f2495138855 100644
--- a/drivers/misc/ti-st/st_ll.c
+++ b/drivers/misc/ti-st/st_ll.c
@@ -30,7 +30,7 @@ static void send_ll_cmd(struct st_data_s *st_data,
unsigned char cmd)
{
- pr_info("%s: writing %x", __func__, cmd);
+ pr_debug("%s: writing %x", __func__, cmd);
st_int_write(st_data, &cmd, 1);
return;
}
@@ -114,23 +114,23 @@ unsigned long st_ll_sleep_state(struct st_data_s *st_data,
{
switch (cmd) {
case LL_SLEEP_IND: /* sleep ind */
- pr_info("sleep indication recvd");
+ pr_debug("sleep indication recvd");
ll_device_want_to_sleep(st_data);
break;
case LL_SLEEP_ACK: /* sleep ack */
pr_err("sleep ack rcvd: host shouldn't");
break;
case LL_WAKE_UP_IND: /* wake ind */
- pr_info("wake indication recvd");
+ pr_debug("wake indication recvd");
ll_device_want_to_wakeup(st_data);
break;
case LL_WAKE_UP_ACK: /* wake ack */
- pr_info("wake ack rcvd");
+ pr_debug("wake ack rcvd");
st_data->ll_state = ST_LL_AWAKE;
break;
default:
pr_err(" unknown input/state ");
- return -1;
+ return -EINVAL;
}
return 0;
}