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Message-ID: <1292585051-28442-1-git-send-email-par-gunnar.p.hjalmdahl@stericsson.com>
Date: Fri, 17 Dec 2010 12:24:11 +0100
From: Par-Gunnar Hjalmdahl <par-gunnar.p.hjalmdahl@...ricsson.com>
To: Pavan Savoy <pavan_savoy@...y.com>,
Vitaly Wool <vitalywool@...il.com>,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Arnd Bergmann <arnd@...db.de>,
Samuel Ortiz <sameo@...ux.intel.com>,
Marcel Holtmann <marcel@...tmann.org>
Cc: <linux-kernel@...r.kernel.org>, <linux-bluetooth@...r.kernel.org>,
Lukasz Rymanowski <Lukasz.Rymanowski@...to.com>,
Linus Walleij <linus.walleij@...ricsson.com>,
Par-Gunnar Hjalmdahl <pghatwork@...il.com>,
Par-Gunnar Hjalmdahl <par-gunnar.p.hjalmdahl@...ricsson.com>
Subject: [PATCH 04/11] mfd: Add support for STLC2690 controller
This patch adds support for the ST-Ericsson STLC2690
framework. The STLC2690 is a chip supporting Bluetooth and FM radio.
Only Bluetooth however supports the H:4 channels where first byte
identifies current channel.
This patch adds support for allocating H:4 channels for both
Kernel and User space (using char devs) using MFD framework.
Signed-off-by: Par-Gunnar Hjalmdahl <par-gunnar.p.hjalmdahl@...ricsson.com>
---
drivers/mfd/Kconfig | 8 +
drivers/mfd/cg2900/Makefile | 1 +
drivers/mfd/cg2900/stlc2690_chip.c | 1673 ++++++++++++++++++++++++++++++++++++
drivers/mfd/cg2900/stlc2690_chip.h | 47 +
4 files changed, 1729 insertions(+), 0 deletions(-)
create mode 100644 drivers/mfd/cg2900/stlc2690_chip.c
create mode 100644 drivers/mfd/cg2900/stlc2690_chip.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 1328b5d..931cb58 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -282,6 +282,14 @@ config MFD_CG2900_CHIP
H:4 interface where first byte determines channel used.
CG2900 support Bluetooth, FM radio, and GPS.
+config MFD_STLC2690_CHIP
+ tristate "Support STLC2690 Connectivity controller"
+ depends on MFD_CG2900
+ help
+ Support for ST-Ericsson STLC2690 Connectivity Controller.
+ STLC2690 support Bluetooth and FM radio, however FM is not supported
+ over H:4 interface.
+
config PMIC_DA903X
bool "Dialog Semiconductor DA9030/DA9034 PMIC Support"
depends on I2C=y
diff --git a/drivers/mfd/cg2900/Makefile b/drivers/mfd/cg2900/Makefile
index 9a5e228..c4f4fc8 100644
--- a/drivers/mfd/cg2900/Makefile
+++ b/drivers/mfd/cg2900/Makefile
@@ -8,4 +8,5 @@ export-objs := cg2900_core.o cg2900_lib.o
obj-$(CONFIG_MFD_CG2900) += cg2900_char_devices.o
obj-$(CONFIG_MFD_CG2900_CHIP) += cg2900_chip.o
+obj-$(CONFIG_MFD_STLC2690_CHIP) += stlc2690_chip.o
diff --git a/drivers/mfd/cg2900/stlc2690_chip.c b/drivers/mfd/cg2900/stlc2690_chip.c
new file mode 100644
index 0000000..3507217
--- /dev/null
+++ b/drivers/mfd/cg2900/stlc2690_chip.c
@@ -0,0 +1,1673 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ * Authors:
+ * Par-Gunnar Hjalmdahl (par-gunnar.p.hjalmdahl@...ricsson.com) for ST-Ericsson.
+ * Henrik Possung (henrik.possung@...ricsson.com) for ST-Ericsson.
+ * Josef Kindberg (josef.kindberg@...ricsson.com) for ST-Ericsson.
+ * Dariusz Szymszak (dariusz.xd.szymczak@...ricsson.com) for ST-Ericsson.
+ * Kjell Andersson (kjell.k.andersson@...ricsson.com) for ST-Ericsson.
+ * License terms: GNU General Public License (GPL), version 2
+ *
+ * Linux Bluetooth HCI H:4 Driver for ST-Ericsson STLC2690 BT/FM controller.
+ */
+#define NAME "stlc2690_chip"
+#define pr_fmt(fmt) NAME ": " fmt "\n"
+
+#include <asm/byteorder.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/gfp.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/stat.h>
+#include <linux/time.h>
+#include <linux/timer.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/cg2900.h>
+#include <linux/mfd/core.h>
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci.h>
+
+#include "cg2900_core.h"
+#include "cg2900_lib.h"
+#include "stlc2690_chip.h"
+
+#define MAIN_DEV (main_info->dev)
+#define BOOT_DEV (info->user_in_charge->dev)
+
+#define WQ_NAME "stlc2690_chip_wq"
+#define PATCH_INFO_FILE "cg2900_patch_info.fw"
+#define FACTORY_SETTINGS_INFO_FILE "cg2900_settings_info.fw"
+
+#define LINE_TOGGLE_DETECT_TIMEOUT 50 /* ms */
+#define CHIP_READY_TIMEOUT 100 /* ms */
+#define CHIP_STARTUP_TIMEOUT 15000 /* ms */
+#define CHIP_SHUTDOWN_TIMEOUT 15000 /* ms */
+
+/** CHANNEL_BT_CMD - Bluetooth HCI H:4 channel
+ * for Bluetooth commands in the ST-Ericsson connectivity controller.
+ */
+#define CHANNEL_BT_CMD 0x01
+
+/** CHANNEL_BT_ACL - Bluetooth HCI H:4 channel
+ * for Bluetooth ACL data in the ST-Ericsson connectivity controller.
+ */
+#define CHANNEL_BT_ACL 0x02
+
+/** CHANNEL_BT_EVT - Bluetooth HCI H:4 channel
+ * for Bluetooth events in the ST-Ericsson connectivity controller.
+ */
+#define CHANNEL_BT_EVT 0x04
+
+/** CHANNEL_HCI_LOGGER - Bluetooth HCI H:4 channel
+ * for logging all transmitted H4 packets (on all channels).
+ */
+#define CHANNEL_HCI_LOGGER 0xFA
+
+/** CHANNEL_CORE - Bluetooth HCI H:4 channel
+ * for user space control of the ST-Ericsson connectivity controller.
+ */
+#define CHANNEL_CORE 0xFD
+
+/*
+ * For the char dev names we keep the same names in order to be able to reuse
+ * the users and to keep a consistent interface.
+ */
+
+/** STLC2690_BT_CMD - Bluetooth HCI H4 channel for Bluetooth commands.
+ */
+#define STLC2690_BT_CMD "cg2900_bt_cmd"
+
+/** STLC2690_BT_ACL - Bluetooth HCI H4 channel for Bluetooth ACL data.
+ */
+#define STLC2690_BT_ACL "cg2900_bt_acl"
+
+/** STLC2690_BT_EVT - Bluetooth HCI H4 channel for Bluetooth events.
+ */
+#define STLC2690_BT_EVT "cg2900_bt_evt"
+
+/** STLC2690_HCI_LOGGER - BT channel for logging all transmitted H4 packets.
+ * Data read is copy of all data transferred on the other channels.
+ * Only write allowed is configuration of the HCI Logger.
+ */
+#define STLC2690_HCI_LOGGER "cg2900_hci_logger"
+
+/** STLC2690_CORE- Channel for keeping ST-Ericsson STLC2690 enabled.
+ * Opening this channel forces the chip to stay powered.
+ * No data can be written to or read from this channel.
+ */
+#define STLC2690_CORE "cg2900_core"
+
+/**
+ * enum main_state - Main-state for STLC2690 driver.
+ * @STLC2690_INIT: STLC2690 initializing.
+ * @STLC2690_IDLE: No user registered to STLC2690 driver.
+ * @STLC2690_BOOTING: STLC2690 booting after first user is registered.
+ * @STLC2690_CLOSING: STLC2690 closing after last user has deregistered.
+ * @STLC2690_RESETING: STLC2690 reset requested.
+ * @STLC2690_ACTIVE: STLC2690 up and running with at least one user.
+ */
+enum main_state {
+ STLC2690_INIT,
+ STLC2690_IDLE,
+ STLC2690_BOOTING,
+ STLC2690_CLOSING,
+ STLC2690_RESETING,
+ STLC2690_ACTIVE
+};
+
+/**
+ * enum boot_state - BOOT-state for STLC2690 chip driver.
+ * @BOOT_RESET: HCI Reset has been sent.
+ * @BOOT_SEND_BD_ADDRESS: VS Store In FS command with BD address
+ * has been sent.
+ * @BOOT_GET_FILES_TO_LOAD: STLC2690 chip driver is retrieving file
+ * to load.
+ * @BOOT_DOWNLOAD_PATCH: STLC2690 chip driver is downloading
+ * patches.
+ * @BOOT_ACTIVATE_PATCHES_AND_SETTINGS: STLC2690 chip driver is activating
+ * patches and settings.
+ * @BOOT_READY: STLC2690 chip driver boot is ready.
+ * @BOOT_FAILED: STLC2690 chip driver boot failed.
+ */
+enum boot_state {
+ BOOT_RESET,
+ BOOT_SEND_BD_ADDRESS,
+ BOOT_GET_FILES_TO_LOAD,
+ BOOT_DOWNLOAD_PATCH,
+ BOOT_ACTIVATE_PATCHES_AND_SETTINGS,
+ BOOT_READY,
+ BOOT_FAILED
+};
+
+/**
+ * enum file_load_state - BOOT_FILE_LOAD-state for STLC2690 chip driver.
+ * @FILE_LOAD_GET_PATCH: Loading patches.
+ * @FILE_LOAD_GET_STATIC_SETTINGS: Loading static settings.
+ * @FILE_LOAD_NO_MORE_FILES: No more files to load.
+ * @FILE_LOAD_FAILED: File loading failed.
+ */
+enum file_load_state {
+ FILE_LOAD_GET_PATCH,
+ FILE_LOAD_GET_STATIC_SETTINGS,
+ FILE_LOAD_NO_MORE_FILES,
+ FILE_LOAD_FAILED
+};
+
+/**
+ * enum download_state - BOOT_DOWNLOAD state.
+ * @DOWNLOAD_PENDING: Download in progress.
+ * @DOWNLOAD_SUCCESS: Download successfully finished.
+ * @DOWNLOAD_FAILED: Downloading failed.
+ */
+enum download_state {
+ DOWNLOAD_PENDING,
+ DOWNLOAD_SUCCESS,
+ DOWNLOAD_FAILED
+};
+
+
+/**
+ * struct stlc2690_channel_item - List object for channel.
+ * @list: list_head struct.
+ * @user: User for this channel.
+ */
+struct stlc2690_channel_item {
+ struct list_head list;
+ struct cg2900_user_data *user;
+};
+
+/**
+ * struct stlc2690_skb_data - Structure for storing private data in an sk_buffer.
+ * @dev: STLC2690 device for this sk_buffer.
+ */
+struct stlc2690_skb_data {
+ struct cg2900_user_data *user;
+};
+#define stlc2690_skb_data(__skb) ((struct stlc2690_skb_data *)((__skb)->cb))
+
+/**
+ * struct stlc2690_chip_info - Main info structure for STLC2690 chip driver.
+ * @patch_file_name: Stores patch file name.
+ * @settings_file_name: Stores settings file name.
+ * @file_info: Firmware file info (patch or settings).
+ * @main_state: Current MAIN-state of STLC2690 chip driver.
+ * @boot_state: Current BOOT-state of STLC2690 chip driver.
+ * @file_load_state: Current BOOT_FILE_LOAD-state of STLC2690 chip
+ * driver.
+ * @download_state: Current BOOT_DOWNLOAD-state of STLC2690 chip
+ * driver.
+ * @wq: STLC2690 chip driver workqueue.
+ * @chip_dev: Chip handler info.
+ * @user_in_charge: User currently operating. Normally used at
+ * channel open and close.
+ * @last_user: Last user of this chip.
+ * @logger: Logger user of this chip.
+ */
+struct stlc2690_chip_info {
+ char *patch_file_name;
+ char *settings_file_name;
+ struct cg2900_file_info file_info;
+ enum main_state main_state;
+ enum boot_state boot_state;
+ enum file_load_state file_load_state;
+ enum download_state download_state;
+ struct workqueue_struct *wq;
+ struct cg2900_chip_dev *chip_dev;
+ spinlock_t rw_lock;
+ struct list_head open_channels;
+ struct cg2900_user_data *user_in_charge;
+ struct cg2900_user_data *last_user;
+ struct cg2900_user_data *logger;
+};
+
+/**
+ * struct main_info - Main info structure for STLC2690 chip driver.
+ * @dev: Device structure.
+ * @cell_base_id: Base ID for MFD cells.
+ * @man_mutex: Management mutex.
+ */
+struct main_info {
+ struct device *dev;
+ int cell_base_id;
+ struct mutex man_mutex;
+};
+
+static struct main_info *main_info;
+
+/*
+ * main_wait_queue - Main Wait Queue in STLC2690 driver.
+ */
+static DECLARE_WAIT_QUEUE_HEAD(main_wait_queue);
+
+static void chip_startup_finished(struct stlc2690_chip_info *info, int err);
+
+/**
+ * send_bd_address() - Send HCI VS command with BD address to the chip.
+ */
+static void send_bd_address(struct stlc2690_chip_info *info)
+{
+ struct bt_vs_store_in_fs_cmd *cmd;
+ u8 plen = sizeof(*cmd) + BT_BDADDR_SIZE;
+
+ cmd = kmalloc(plen, GFP_KERNEL);
+ if (!cmd)
+ return;
+
+ cmd->opcode = cpu_to_le16(STLC2690_BT_OP_VS_STORE_IN_FS);
+ cmd->plen = BT_PARAM_LEN(plen);
+ cmd->user_id = STLC2690_VS_STORE_IN_FS_USR_ID_BD_ADDR;
+ cmd->len = BT_BDADDR_SIZE;
+ /* Now copy the BD address received from user space control app. */
+ memcpy(cmd->data, bd_address, BT_BDADDR_SIZE);
+
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_SEND_BD_ADDRESS\n");
+ info->boot_state = BOOT_SEND_BD_ADDRESS;
+
+ cg2900_send_bt_cmd(info->user_in_charge, info->logger, cmd, plen);
+
+ kfree(cmd);
+}
+
+/**
+ * send_settings_file() - Transmit settings file.
+ *
+ * The send_settings_file() function transmit settings file.
+ * The file is read in parts to fit in HCI packets. When finished,
+ * close the settings file and send HCI reset to activate settings and patches.
+ */
+static void send_settings_file(struct stlc2690_chip_info *info)
+{
+ int bytes_sent;
+
+ bytes_sent = cg2900_read_and_send_file_part(info->user_in_charge,
+ info->logger,
+ &info->file_info);
+ if (bytes_sent > 0) {
+ /* Data sent. Wait for CmdComplete */
+ return;
+ } else if (bytes_sent < 0) {
+ dev_err(BOOT_DEV, "send_settings_file: Error %d occurred\n",
+ bytes_sent);
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_FAILED\n");
+ info->boot_state = BOOT_FAILED;
+ chip_startup_finished(info, bytes_sent);
+ return;
+ }
+
+ /* No data was sent. This file is finished */
+ info->download_state = DOWNLOAD_SUCCESS;
+
+ /* Settings file finished. Release used resources */
+ dev_dbg(BOOT_DEV, "Settings file finished, release used resources\n");
+ release_firmware(info->file_info.fw_file);
+ info->file_info.fw_file = NULL;
+
+ dev_dbg(BOOT_DEV, "New file_load_state: FILE_LOAD_NO_MORE_FILES\n");
+ info->file_load_state = FILE_LOAD_NO_MORE_FILES;
+
+ /* Create and send HCI VS Store In FS command with bd address. */
+ send_bd_address(info);
+}
+
+/**
+ * send_patch_file - Transmit patch file.
+ *
+ * The send_patch_file() function transmit patch file.
+ * The file is read in parts to fit in HCI packets. When the complete file is
+ * transmitted, the file is closed.
+ * When finished, continue with settings file.
+ */
+static void send_patch_file(struct stlc2690_chip_info *info)
+{
+ int err;
+ int bytes_sent;
+
+ bytes_sent = cg2900_read_and_send_file_part(info->user_in_charge,
+ info->logger,
+ &info->file_info);
+ if (bytes_sent > 0) {
+ /* Data sent. Wait for CmdComplete */
+ return;
+ } else if (bytes_sent < 0) {
+ dev_err(BOOT_DEV, "send_patch_file: Error %d occurred\n",
+ bytes_sent);
+ err = bytes_sent;
+ goto error_handling;
+ }
+
+ /* No data was sent. This file is finished */
+ info->download_state = DOWNLOAD_SUCCESS;
+
+ dev_dbg(BOOT_DEV, "Patch file finished, release used resources\n");
+ release_firmware(info->file_info.fw_file);
+ info->file_info.fw_file = NULL;
+ /* Retrieve the settings file */
+ err = request_firmware(&info->file_info.fw_file,
+ info->settings_file_name,
+ info->chip_dev->dev);
+ if (err) {
+ dev_err(BOOT_DEV, "Couldn't get settings file (%d)\n", err);
+ goto error_handling;
+ }
+ /* Now send the settings file */
+ dev_dbg(BOOT_DEV,
+ "New file_load_state: FILE_LOAD_GET_STATIC_SETTINGS\n");
+ info->file_load_state = FILE_LOAD_GET_STATIC_SETTINGS;
+ dev_dbg(BOOT_DEV, "New download_state: DOWNLOAD_PENDING\n");
+ info->download_state = DOWNLOAD_PENDING;
+ send_settings_file(info);
+ return;
+
+error_handling:
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_FAILED\n");
+ info->boot_state = BOOT_FAILED;
+ chip_startup_finished(info, err);
+}
+
+/**
+ * work_reset_after_error() - Handle reset.
+ * @work: Reference to work data.
+ *
+ * Handle a reset after received Command Complete event.
+ */
+static void work_reset_after_error(struct work_struct *work)
+{
+ struct cg2900_work *my_work;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ if (!work) {
+ dev_err(MAIN_DEV, "work_reset_after_error: work == NULL\n");
+ return;
+ }
+
+ my_work = container_of(work, struct cg2900_work, work);
+ dev = my_work->user_data;
+ info = dev->c_data;
+
+ chip_startup_finished(info, -EIO);
+
+ kfree(my_work);
+}
+
+/**
+ * work_load_patch_and_settings() - Start loading patches and settings.
+ * @work: Reference to work data.
+ */
+static void work_load_patch_and_settings(struct work_struct *work)
+{
+ int err = 0;
+ bool file_found;
+ const struct firmware *patch_info;
+ const struct firmware *settings_info;
+ struct cg2900_work *my_work;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ if (!work) {
+ dev_err(MAIN_DEV,
+ "work_load_patch_and_settings: work == NULL\n");
+ return;
+ }
+
+ my_work = container_of(work, struct cg2900_work, work);
+ dev = my_work->user_data;
+ info = dev->c_data;
+
+ /* Check that we are in the right state */
+ if (info->boot_state != BOOT_GET_FILES_TO_LOAD)
+ goto finished;
+
+ /* Open patch info file. */
+ err = request_firmware(&patch_info, PATCH_INFO_FILE,
+ dev->dev);
+ if (err) {
+ dev_err(BOOT_DEV, "Couldn't get patch info file (%d)\n", err);
+ goto error_handling;
+ }
+
+ /*
+ * Now we have the patch info file.
+ * See if we can find the right patch file as well
+ */
+ file_found = cg2900_get_file_name(patch_info, &info->patch_file_name,
+ info->chip_dev->chip.hci_revision,
+ info->chip_dev->chip.hci_sub_version);
+
+ /* Now we are finished with the patch info file */
+ release_firmware(patch_info);
+
+ if (!file_found) {
+ dev_err(BOOT_DEV, "Couldn't find patch file! Major error\n");
+ goto error_handling;
+ }
+
+ /* Open settings info file. */
+ err = request_firmware(&settings_info,
+ FACTORY_SETTINGS_INFO_FILE,
+ dev->dev);
+ if (err) {
+ dev_err(BOOT_DEV, "Couldn't get settings info file (%d)\n",
+ err);
+ goto error_handling;
+ }
+
+ /*
+ * Now we have the settings info file.
+ * See if we can find the right settings file as well.
+ */
+ file_found = cg2900_get_file_name(settings_info,
+ &info->settings_file_name,
+ info->chip_dev->chip.hci_revision,
+ info->chip_dev->chip.hci_sub_version);
+
+ /* Now we are finished with the patch info file */
+ release_firmware(settings_info);
+
+ if (!file_found) {
+ dev_err(BOOT_DEV, "Couldn't find settings file! Major error\n");
+ goto error_handling;
+ }
+
+ /* We now all info needed */
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_DOWNLOAD_PATCH\n");
+ info->boot_state = BOOT_DOWNLOAD_PATCH;
+ dev_dbg(BOOT_DEV, "New download_state: DOWNLOAD_PENDING\n");
+ info->download_state = DOWNLOAD_PENDING;
+ dev_dbg(BOOT_DEV, "New file_load_state: FILE_LOAD_GET_PATCH\n");
+ info->file_load_state = FILE_LOAD_GET_PATCH;
+ info->file_info.chunk_id = 0;
+ info->file_info.file_offset = 0;
+ info->file_info.fw_file = NULL;
+
+ /* OK. Now it is time to download the patches */
+ err = request_firmware(&(info->file_info.fw_file),
+ info->patch_file_name,
+ dev->dev);
+ if (err < 0) {
+ dev_err(BOOT_DEV, "Couldn't get patch file (%d)\n", err);
+ goto error_handling;
+ }
+ send_patch_file(info);
+
+ goto finished;
+
+error_handling:
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_FAILED\n");
+ info->boot_state = BOOT_FAILED;
+ chip_startup_finished(info, -EIO);
+finished:
+ kfree(my_work);
+}
+
+/**
+ * work_cont_file_download() - A file block has been written.
+ * @work: Reference to work data.
+ *
+ * Handle a received HCI VS Write File Block Complete event.
+ * Normally this means continue to send files to the controller.
+ */
+static void work_cont_file_download(struct work_struct *work)
+{
+ struct cg2900_work *my_work;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ if (!work) {
+ dev_err(MAIN_DEV, "work_cont_file_download: work == NULL\n");
+ return;
+ }
+
+ my_work = container_of(work, struct cg2900_work, work);
+ dev = my_work->user_data;
+ info = dev->c_data;
+
+ /* Continue to send patches or settings to the controller */
+ if (info->file_load_state == FILE_LOAD_GET_PATCH)
+ send_patch_file(info);
+ else if (info->file_load_state == FILE_LOAD_GET_STATIC_SETTINGS)
+ send_settings_file(info);
+ else
+ dev_dbg(BOOT_DEV, "No more files to load\n");
+
+ kfree(my_work);
+}
+
+/**
+ * handle_reset_cmd_complete() - Handles HCI Reset Command Complete event.
+ * @data: Pointer to received HCI data packet.
+ *
+ * Returns:
+ * true, if packet was handled internally,
+ * false, otherwise.
+ */
+static bool handle_reset_cmd_complete(struct cg2900_chip_dev *dev, u8 *data)
+{
+ u8 status = data[0];
+ struct stlc2690_chip_info *info = dev->c_data;
+
+ dev_dbg(BOOT_DEV, "Received Reset complete event with status 0x%X\n",
+ status);
+
+ if (BOOT_RESET != info->boot_state &&
+ BOOT_ACTIVATE_PATCHES_AND_SETTINGS != info->boot_state)
+ return false;
+
+ if (HCI_BT_ERROR_NO_ERROR != status) {
+ dev_err(BOOT_DEV, "Command complete for HciReset received with "
+ "error 0x%X\n", status);
+ cg2900_create_work_item(info->wq, work_reset_after_error, dev);
+ return true;
+ }
+
+ if (BOOT_RESET == info->boot_state) {
+ info->boot_state = BOOT_GET_FILES_TO_LOAD;
+ cg2900_create_work_item(info->wq, work_load_patch_and_settings,
+ dev);
+ } else {
+ /*
+ * The boot sequence is now finished successfully.
+ * Set states and signal to waiting thread.
+ */
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_READY\n");
+ info->boot_state = BOOT_READY;
+ chip_startup_finished(info, 0);
+ }
+
+ return true;
+}
+
+
+/**
+ * handle_vs_store_in_fs_cmd_complete() - Handles HCI VS StoreInFS Command Complete event.
+ * @data: Pointer to received HCI data packet.
+ *
+ * Returns:
+ * true, if packet was handled internally,
+ * false, otherwise.
+ */
+static bool handle_vs_store_in_fs_cmd_complete(struct cg2900_chip_dev *dev,
+ u8 *data)
+{
+ u8 status = data[0];
+ struct stlc2690_chip_info *info = dev->c_data;
+
+ dev_dbg(BOOT_DEV,
+ "Received Store_in_FS complete event with status 0x%X\n",
+ status);
+
+ if (info->boot_state != BOOT_SEND_BD_ADDRESS)
+ return false;
+
+ if (HCI_BT_ERROR_NO_ERROR == status) {
+ struct hci_command_hdr cmd;
+
+ /* Send HCI Reset command to activate patches */
+ dev_dbg(BOOT_DEV,
+ "New boot_state: BOOT_ACTIVATE_PATCHES_AND_SETTINGS\n");
+ info->boot_state = BOOT_ACTIVATE_PATCHES_AND_SETTINGS;
+
+ cmd.opcode = cpu_to_le16(HCI_OP_RESET);
+ cmd.plen = 0; /* No parameters for Reset */
+ cg2900_send_bt_cmd(info->user_in_charge, info->logger, &cmd,
+ sizeof(cmd));
+ } else {
+ dev_err(BOOT_DEV,
+ "Command complete for StoreInFS received with error "
+ "0x%X\n", status);
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_FAILED\n");
+ info->boot_state = BOOT_FAILED;
+ cg2900_create_work_item(info->wq, work_reset_after_error, dev);
+ }
+
+ return true;
+}
+
+/**
+ * handle_vs_write_file_block_cmd_complete() - Handles HCI VS WriteFileBlock Command Complete event.
+ * @data: Pointer to received HCI data packet.
+ *
+ * Returns:
+ * true, if packet was handled internally,
+ * false, otherwise.
+ */
+static bool handle_vs_write_file_block_cmd_complete(struct cg2900_chip_dev *dev,
+ u8 *data)
+{
+ u8 status = data[0];
+ struct stlc2690_chip_info *info = dev->c_data;
+
+ if (info->boot_state != BOOT_DOWNLOAD_PATCH ||
+ info->download_state != DOWNLOAD_PENDING)
+ return false;
+
+ if (HCI_BT_ERROR_NO_ERROR == status)
+ cg2900_create_work_item(info->wq, work_cont_file_download, dev);
+ else {
+ dev_err(BOOT_DEV,
+ "Command complete for WriteFileBlock received with"
+ " error 0x%X\n", status);
+ dev_dbg(BOOT_DEV, "New download_state: DOWNLOAD_FAILED\n");
+ info->download_state = DOWNLOAD_FAILED;
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_FAILED\n");
+ info->boot_state = BOOT_FAILED;
+ if (info->file_info.fw_file) {
+ release_firmware(info->file_info.fw_file);
+ info->file_info.fw_file = NULL;
+ }
+ cg2900_create_work_item(info->wq, work_reset_after_error, dev);
+ }
+
+ return true;
+}
+
+/**
+ * handle_vs_write_file_block_cmd_status() - Handles HCI VS WriteFileBlock Command Status event.
+ * @status: Returned status of WriteFileBlock command.
+ *
+ * Returns:
+ * true, if packet was handled internally,
+ * false, otherwise.
+ */
+static bool handle_vs_write_file_block_cmd_status(struct cg2900_chip_dev *dev,
+ u8 status)
+{
+ struct stlc2690_chip_info *info = dev->c_data;
+
+ if (info->boot_state != BOOT_DOWNLOAD_PATCH ||
+ info->download_state != DOWNLOAD_PENDING)
+ return false;
+
+ /*
+ * Only do something if there is an error. Otherwise we will wait for
+ * CmdComplete.
+ */
+ if (HCI_BT_ERROR_NO_ERROR != status) {
+ dev_err(BOOT_DEV,
+ "Command status for WriteFileBlock received with"
+ " error 0x%X\n", status);
+ dev_dbg(BOOT_DEV, "New download_state: DOWNLOAD_FAILED\n");
+ info->download_state = DOWNLOAD_FAILED;
+ dev_dbg(BOOT_DEV, "New boot_state: BOOT_FAILED\n");
+ info->boot_state = BOOT_FAILED;
+ if (info->file_info.fw_file) {
+ release_firmware(info->file_info.fw_file);
+ info->file_info.fw_file = NULL;
+ }
+ cg2900_create_work_item(info->wq, work_reset_after_error, dev);
+ }
+
+ return true;
+}
+
+/**
+ * handle_rx_data_bt_evt() - Check if received data should be handled in STLC2690 chip driver.
+ * @skb: Data packet
+ *
+ * The handle_rx_data_bt_evt() function checks if received data should be
+ * handled in STLC2690 chip driver. If so handle it correctly.
+ * Received data is always HCI BT Event.
+ *
+ * Returns:
+ * True, if packet was handled internally,
+ * False, otherwise.
+ */
+static bool handle_rx_data_bt_evt(struct cg2900_chip_dev *dev,
+ struct sk_buff *skb)
+{
+ bool pkt_handled = false;
+ /* skb cannot be NULL here so it is safe to de-reference */
+ u8 *data = skb->data;
+ struct hci_event_hdr *evt;
+ u16 op_code;
+
+ evt = (struct hci_event_hdr *)data;
+ data += sizeof(*evt);
+
+ /* First check the event code. */
+ if (HCI_EV_CMD_COMPLETE == evt->evt) {
+ struct hci_ev_cmd_complete *cmd_complete;
+
+ cmd_complete = (struct hci_ev_cmd_complete *)data;
+ op_code = le16_to_cpu(cmd_complete->opcode);
+ dev_dbg(dev->dev,
+ "Received Command Complete: op_code = 0x%04X\n",
+ op_code);
+ /* Move to first byte after OCF */
+ data += sizeof(*cmd_complete);
+
+ if (op_code == HCI_OP_RESET)
+ pkt_handled = handle_reset_cmd_complete(dev, data);
+ else if (op_code == STLC2690_BT_OP_VS_STORE_IN_FS)
+ pkt_handled = handle_vs_store_in_fs_cmd_complete(dev,
+ data);
+ else if (op_code == STLC2690_BT_OP_VS_WRITE_FILE_BLOCK)
+ pkt_handled =
+ handle_vs_write_file_block_cmd_complete(dev,
+ data);
+ } else if (HCI_EV_CMD_STATUS == evt->evt) {
+ struct hci_ev_cmd_status *cmd_status;
+
+ cmd_status = (struct hci_ev_cmd_status *)data;
+
+ op_code = le16_to_cpu(cmd_status->opcode);
+
+ dev_dbg(dev->dev, "Received Command Status: op_code = 0x%04X\n",
+ op_code);
+
+ if (op_code == STLC2690_BT_OP_VS_WRITE_FILE_BLOCK)
+ pkt_handled = handle_vs_write_file_block_cmd_status
+ (dev, cmd_status->status);
+ } else if (HCI_EV_HW_ERROR == evt->evt) {
+ struct hci_ev_hw_error *hw_error;
+
+ hw_error = (struct hci_ev_hw_error *)data;
+ /*
+ * Only do a printout. There might be a receiving stack that can
+ * handle this event
+ */
+ dev_err(dev->dev, "HW Error event received with error 0x%02X\n",
+ hw_error->hw_code);
+ return false;
+ } else
+ return false;
+
+ if (pkt_handled)
+ kfree_skb(skb);
+
+ return pkt_handled;
+}
+
+/**
+ * data_from_chip() - Called when data is received from the chip.
+ * @dev: Chip info.
+ * @skb: Packet received.
+ *
+ * The data_from_chip() function checks if packet is a response for a packet it
+ * itself has transmitted. If not it finds the correct user and sends the packet
+ * to the user.
+ */
+static void data_from_chip(struct cg2900_chip_dev *dev,
+ struct sk_buff *skb)
+{
+ int h4_channel;
+ struct list_head *cursor;
+ struct stlc2690_channel_item *tmp;
+ struct stlc2690_chip_info *info = dev->c_data;
+ struct cg2900_user_data *user = NULL;
+
+ h4_channel = skb->data[0];
+ skb_pull(skb, HCI_H4_SIZE);
+
+ /* Then check if this is a response to data we have sent */
+ if (h4_channel == CHANNEL_BT_EVT && handle_rx_data_bt_evt(dev, skb))
+ return;
+
+ spin_lock_bh(&info->rw_lock);
+
+ /* Let's see if this packet has the same user as the last one */
+ if (info->last_user && info->last_user->h4_channel == h4_channel) {
+ user = info->last_user;
+ goto user_found;
+ }
+
+ /* Search through the list of all open channels to find the user */
+ list_for_each(cursor, &info->open_channels) {
+ tmp = list_entry(cursor, struct stlc2690_channel_item, list);
+ if (tmp->user->h4_channel == h4_channel) {
+ user = tmp->user;
+ goto user_found;
+ }
+ }
+
+user_found:
+ info->last_user = user;
+ spin_unlock_bh(&info->rw_lock);
+
+ if (user)
+ user->read_cb(user, skb);
+ else {
+ dev_err(dev->dev,
+ "Could not find corresponding user to h4_channel %d\n",
+ h4_channel);
+ kfree_skb(skb);
+ }
+}
+
+static void chip_removed(struct cg2900_chip_dev *dev)
+{
+ struct stlc2690_chip_info *info = dev->c_data;
+
+ mfd_remove_devices(dev->dev);
+ kfree(info->settings_file_name);
+ kfree(info->patch_file_name);
+ destroy_workqueue(info->wq);
+ kfree(info);
+ dev->c_data = NULL;
+ dev->c_cb.chip_removed = NULL;
+ dev->c_cb.data_from_chip = NULL;
+}
+
+/**
+ * chip_shutdown() - Reset and power the chip off.
+ */
+static void chip_shutdown(struct cg2900_user_data *user)
+{
+ struct cg2900_chip_dev *dev = cg2900_get_prv(user);
+ struct stlc2690_chip_info *info = dev->c_data;
+
+ dev_dbg(user->dev, "chip_shutdown\n");
+
+ /* Close the transport, which will power off the chip */
+ if (dev->t_cb.close)
+ dev->t_cb.close(dev);
+
+ /* Chip shut-down finished, set correct state and wake up the chip. */
+ dev_dbg(dev->dev, "New main_state: STLC2690_IDLE\n");
+ info->main_state = STLC2690_IDLE;
+ wake_up_interruptible_all(&main_wait_queue);
+}
+
+static void chip_startup_finished(struct stlc2690_chip_info *info, int err)
+{
+ dev_dbg(BOOT_DEV, "chip_startup_finished (%d)\n", err);
+
+ if (err)
+ /* Shutdown the chip */
+ chip_shutdown(info->user_in_charge);
+ else {
+ dev_dbg(BOOT_DEV, "New main_state: CORE_ACTIVE\n");
+ info->main_state = STLC2690_ACTIVE;
+ }
+
+ wake_up_interruptible_all(&main_wait_queue);
+
+ if (err)
+ return;
+
+ if (!info->chip_dev->t_cb.chip_startup_finished)
+ dev_err(BOOT_DEV, "chip_startup_finished callback not found\n");
+ else
+ info->chip_dev->t_cb.chip_startup_finished(info->chip_dev);
+}
+
+static int stlc2690_open(struct cg2900_user_data *user)
+{
+ int err;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+ struct list_head *cursor;
+ struct stlc2690_channel_item *tmp;
+ struct hci_command_hdr cmd;
+
+ BUG_ON(!main_info);
+
+ if (!user) {
+ dev_err(MAIN_DEV, "stlc2690_open: Calling with NULL pointer\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(user->dev, "stlc2690_open\n");
+
+ dev = cg2900_get_prv(user);
+ info = dev->c_data;
+
+ mutex_lock(&main_info->man_mutex);
+
+ /* Add a minor wait in order to avoid CPU blocking, looping openings */
+ err = wait_event_interruptible_timeout(main_wait_queue,
+ (STLC2690_IDLE == info->main_state ||
+ STLC2690_ACTIVE == info->main_state),
+ msecs_to_jiffies(LINE_TOGGLE_DETECT_TIMEOUT));
+ if (err <= 0) {
+ if (STLC2690_INIT == info->main_state)
+ dev_err(user->dev, "Transport not opened\n");
+ else
+ dev_err(user->dev, "stlc2690_open currently busy "
+ "(0x%X). Try again\n", info->main_state);
+ err = -EBUSY;
+ goto err_free_mutex;
+ }
+
+ err = 0;
+
+ list_for_each(cursor, &info->open_channels) {
+ tmp = list_entry(cursor, struct stlc2690_channel_item, list);
+ if (tmp->user->h4_channel == user->h4_channel) {
+ dev_err(user->dev, "Channel %d is already opened\n",
+ user->h4_channel);
+ err = -EACCES;
+ goto err_free_mutex;
+ }
+ }
+
+ tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
+ if (!tmp) {
+ dev_err(user->dev, "Could not allocate tmp\n");
+ err = -ENOMEM;
+ goto err_free_mutex;
+ }
+ tmp->user = user;
+
+ if (STLC2690_ACTIVE != info->main_state &&
+ !user->chip_independent) {
+ /* Open transport and start-up the chip */
+ if (dev->t_cb.set_chip_power)
+ dev->t_cb.set_chip_power(dev, true);
+
+ /* Wait to be sure that the chip is ready */
+ schedule_timeout_interruptible(
+ msecs_to_jiffies(CHIP_READY_TIMEOUT));
+
+ if (dev->t_cb.open)
+ err = dev->t_cb.open(dev);
+ if (err) {
+ if (dev->t_cb.set_chip_power)
+ dev->t_cb.set_chip_power(dev, false);
+ goto err_free_list_item;
+ }
+
+ /* Start the boot sequence */
+ info->user_in_charge = user;
+ info->last_user = user;
+ dev_dbg(user->dev, "New boot_state: BOOT_RESET\n");
+ info->boot_state = BOOT_RESET;
+ dev_dbg(user->dev, "New main_state: STLC2690_BOOTING\n");
+ info->main_state = STLC2690_BOOTING;
+ cmd.opcode = cpu_to_le16(HCI_OP_RESET);
+ cmd.plen = 0; /* No parameters for HCI reset */
+ cg2900_send_bt_cmd(user, info->logger, &cmd, sizeof(cmd));
+
+ dev_dbg(user->dev, "Wait up to 15 seconds for chip to start\n");
+ wait_event_interruptible_timeout(main_wait_queue,
+ (STLC2690_ACTIVE == info->main_state ||
+ STLC2690_IDLE == info->main_state),
+ msecs_to_jiffies(CHIP_STARTUP_TIMEOUT));
+ if (STLC2690_ACTIVE != info->main_state) {
+ dev_err(user->dev, "STLC2690 driver failed to start\n");
+
+ if (dev->t_cb.close)
+ dev->t_cb.close(dev);
+
+ dev_dbg(user->dev, "New main_state: CORE_IDLE\n");
+ info->main_state = STLC2690_IDLE;
+ err = -EIO;
+ goto err_free_list_item;
+ }
+ }
+
+ list_add_tail(&tmp->list, &info->open_channels);
+
+ user->opened = true;
+
+ dev_dbg(user->dev, "H:4 channel opened\n");
+
+ mutex_unlock(&main_info->man_mutex);
+ return 0;
+err_free_list_item:
+ kfree(tmp);
+err_free_mutex:
+ mutex_unlock(&main_info->man_mutex);
+ return err;
+}
+
+static int stlc2690_hci_log_open(struct cg2900_user_data *user)
+{
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+ int err;
+
+ BUG_ON(!main_info);
+
+ if (!user) {
+ dev_err(MAIN_DEV,
+ "stlc2690_hci_log_open: Calling with NULL pointer\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(user->dev, "stlc2690_hci_log_open\n");
+
+ dev = cg2900_get_prv(user);
+ info = dev->c_data;
+
+ if (info->logger) {
+ dev_err(user->dev, "HCI Logger already stored\n");
+ return -EACCES;
+ }
+
+ info->logger = user;
+ err = stlc2690_open(user);
+ if (err)
+ info->logger = NULL;
+ return err;
+}
+
+static void stlc2690_close(struct cg2900_user_data *user)
+{
+ bool keep_powered = false;
+ struct list_head *cursor, *next;
+ struct stlc2690_channel_item *tmp;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ BUG_ON(!main_info);
+
+ if (!user) {
+ dev_err(MAIN_DEV,
+ "stlc2690_close: Calling with NULL pointer\n");
+ return;
+ }
+
+ dev_dbg(user->dev, "stlc2690_close\n");
+
+ dev = cg2900_get_prv(user);
+ info = dev->c_data;
+
+ mutex_lock(&main_info->man_mutex);
+
+ /*
+ * Go through each open channel. Remove our channel and check if there
+ * is any other channel that want to keep the chip running
+ */
+ list_for_each_safe(cursor, next, &info->open_channels) {
+ tmp = list_entry(cursor, struct stlc2690_channel_item, list);
+ if (tmp->user == user) {
+ list_del(cursor);
+ kfree(tmp);
+ } else if (!tmp->user->chip_independent)
+ keep_powered = true;
+ }
+
+ if (keep_powered)
+ /* This was not the last user, we're done. */
+ goto finished;
+
+ if (STLC2690_IDLE == info->main_state)
+ /* Chip has already been shut down. */
+ goto finished;
+
+ dev_dbg(user->dev, "New main_state: CORE_CLOSING\n");
+ info->main_state = STLC2690_CLOSING;
+ chip_shutdown(user);
+
+ dev_dbg(user->dev, "Wait up to 15 seconds for chip to shut-down\n");
+ wait_event_interruptible_timeout(main_wait_queue,
+ (STLC2690_IDLE == info->main_state),
+ msecs_to_jiffies(CHIP_SHUTDOWN_TIMEOUT));
+
+ /* Force shutdown if we timed out */
+ if (STLC2690_IDLE != info->main_state) {
+ dev_err(user->dev,
+ "ST-Ericsson STLC2690 Core Driver was shut-down with "
+ "problems\n");
+
+ if (dev->t_cb.close)
+ dev->t_cb.close(dev);
+
+ dev_dbg(user->dev, "New main_state: CORE_IDLE\n");
+ info->main_state = STLC2690_IDLE;
+ }
+
+finished:
+ mutex_unlock(&main_info->man_mutex);
+ user->opened = false;
+ dev_dbg(user->dev, "H:4 channel closed\n");
+}
+
+static void stlc2690_hci_log_close(struct cg2900_user_data *user)
+{
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ BUG_ON(!main_info);
+
+ if (!user) {
+ dev_err(MAIN_DEV,
+ "stlc2690_hci_log_close: Calling with NULL pointer\n");
+ return;
+ }
+
+ dev_dbg(user->dev, "stlc2690_hci_log_close\n");
+
+ dev = cg2900_get_prv(user);
+ info = dev->c_data;
+
+ info->logger = NULL;
+ stlc2690_close(user);
+}
+
+static int stlc2690_reset(struct cg2900_user_data *user)
+{
+ struct list_head *cursor, *next;
+ struct stlc2690_channel_item *tmp;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ if (!user) {
+ dev_err(MAIN_DEV,
+ "stlc2690_reset: Calling with NULL pointer\n");
+ return -EINVAL;
+ }
+
+ dev = cg2900_get_prv(user);
+ info = dev->c_data;
+
+ dev_info(user->dev, "stlc2690_reset\n");
+
+ BUG_ON(!main_info);
+
+ mutex_lock(&main_info->man_mutex);
+
+ dev_dbg(user->dev, "New main_state: CORE_RESETING\n");
+ info->main_state = STLC2690_RESETING;
+
+ chip_shutdown(user);
+
+ /*
+ * Inform all opened channels about the reset and free the user devices
+ */
+ list_for_each_safe(cursor, next, &info->open_channels) {
+ tmp = list_entry(cursor, struct stlc2690_channel_item, list);
+ list_del(cursor);
+ tmp->user->opened = false;
+ tmp->user->reset_cb(tmp->user);
+ kfree(tmp);
+ }
+
+ /* Reset finished. We are now idle until first channel is opened */
+ dev_dbg(user->dev, "New main_state: STLC2690_IDLE\n");
+ info->main_state = STLC2690_IDLE;
+
+ mutex_unlock(&main_info->man_mutex);
+
+ /*
+ * Send wake-up since this might have been called from a failed boot.
+ * No harm done if it is a STLC2690 chip user who called.
+ */
+ wake_up_interruptible_all(&main_wait_queue);
+
+ return 0;
+}
+
+static struct sk_buff *stlc2690_alloc_skb(unsigned int size, gfp_t priority)
+{
+ struct sk_buff *skb;
+
+ dev_dbg(MAIN_DEV, "stlc2690_alloc_skb size %d bytes\n", size);
+
+ /* Allocate the SKB and reserve space for the header */
+ skb = alloc_skb(size + CG2900_SKB_RESERVE, priority);
+ if (skb)
+ skb_reserve(skb, CG2900_SKB_RESERVE);
+
+ return skb;
+}
+
+static int stlc2690_write(struct cg2900_user_data *user, struct sk_buff *skb)
+{
+ int err = 0;
+ u8 *h4_header;
+ struct cg2900_chip_dev *dev;
+ struct stlc2690_chip_info *info;
+
+ BUG_ON(!main_info);
+
+ if (!user) {
+ dev_err(MAIN_DEV,
+ "stlc2690_write: Calling with NULL pointer\n");
+ return -EINVAL;
+ }
+
+ if (!skb) {
+ dev_err(user->dev, "stlc2690_write with no sk_buffer\n");
+ return -EINVAL;
+ }
+
+ dev = cg2900_get_prv(user);
+ info = dev->c_data;
+
+ dev_dbg(user->dev, "stlc2690_write length %d bytes\n", skb->len);
+
+ if (!user->opened) {
+ dev_err(user->dev,
+ "Trying to transmit data on a closed channel\n");
+ return -EACCES;
+ }
+
+ /*
+ * Move the data pointer to the H:4 header position and
+ * store the H4 header.
+ */
+ h4_header = skb_push(skb, CG2900_SKB_RESERVE);
+ *h4_header = (u8)user->h4_channel;
+ cg2900_tx_to_chip(user, info->logger, skb);
+
+ return err;
+}
+
+static int stlc2690_no_write(struct cg2900_user_data *user,
+ struct sk_buff *skb)
+{
+ dev_err(user->dev, "Not allowed to send on this channel\n");
+ return -EPERM;
+}
+
+static bool stlc2690_get_local_revision(struct cg2900_user_data *user,
+ struct cg2900_rev_data *rev_data)
+{
+ struct cg2900_chip_dev *dev;
+
+ BUG_ON(!main_info);
+
+ if (!user) {
+ dev_err(MAIN_DEV, "stlc2690_get_local_revision: Calling with "
+ "NULL pointer\n");
+ return false;
+ }
+
+ if (!rev_data) {
+ dev_err(user->dev, "Calling with rev_data NULL\n");
+ return false;
+ }
+
+ dev = cg2900_get_prv(user);
+
+ rev_data->revision = dev->chip.hci_revision;
+ rev_data->sub_version = dev->chip.hci_sub_version;
+
+ return true;
+}
+
+static struct cg2900_user_data btcmd_data = {
+ .h4_channel = CHANNEL_BT_CMD,
+};
+static struct cg2900_user_data btacl_data = {
+ .h4_channel = CHANNEL_BT_ACL,
+};
+static struct cg2900_user_data btevt_data = {
+ .h4_channel = CHANNEL_BT_EVT,
+};
+static struct cg2900_user_data hci_logger_data = {
+ .h4_channel = CHANNEL_HCI_LOGGER,
+ .chip_independent = true,
+ .write = stlc2690_no_write,
+ .open = stlc2690_hci_log_open,
+ .close = stlc2690_hci_log_close,
+};
+static struct cg2900_user_data core_data = {
+ .h4_channel = CHANNEL_CORE,
+ .write = stlc2690_no_write,
+};
+
+static struct mfd_cell stlc2690_devs[] = {
+ {
+ .name = "cg2900-btcmd",
+ .platform_data = &btcmd_data,
+ .data_size = sizeof(btcmd_data),
+ },
+ {
+ .name = "cg2900-btacl",
+ .platform_data = &btacl_data,
+ .data_size = sizeof(btacl_data),
+ },
+ {
+ .name = "cg2900-btevt",
+ .platform_data = &btevt_data,
+ .data_size = sizeof(btevt_data),
+ },
+ {
+ .name = "cg2900-hcilogger",
+ .platform_data = &hci_logger_data,
+ .data_size = sizeof(hci_logger_data),
+ },
+ {
+ .name = "cg2900-core",
+ .platform_data = &core_data,
+ .data_size = sizeof(core_data),
+ },
+};
+
+static struct cg2900_user_data char_btcmd_data = {
+ .channel_data = {
+ .char_dev_name = STLC2690_BT_CMD,
+ },
+ .h4_channel = CHANNEL_BT_CMD,
+};
+static struct cg2900_user_data char_btacl_data = {
+ .channel_data = {
+ .char_dev_name = STLC2690_BT_ACL,
+ },
+ .h4_channel = CHANNEL_BT_ACL,
+};
+static struct cg2900_user_data char_btevt_data = {
+ .channel_data = {
+ .char_dev_name = STLC2690_BT_EVT,
+ },
+ .h4_channel = CHANNEL_BT_EVT,
+};
+static struct cg2900_user_data char_hci_logger_data = {
+ .channel_data = {
+ .char_dev_name = STLC2690_HCI_LOGGER,
+ },
+ .h4_channel = CHANNEL_HCI_LOGGER,
+ .chip_independent = true,
+ .write = stlc2690_no_write,
+ .open = stlc2690_hci_log_open,
+ .close = stlc2690_hci_log_close,
+};
+static struct cg2900_user_data char_core_data = {
+ .channel_data = {
+ .char_dev_name = STLC2690_CORE,
+ },
+ .h4_channel = CHANNEL_CORE,
+ .write = stlc2690_no_write,
+};
+
+static struct mfd_cell stlc2690_char_devs[] = {
+ {
+ .name = "cg2900-chardev",
+ .id = 0,
+ .platform_data = &char_btcmd_data,
+ .data_size = sizeof(char_btcmd_data),
+ },
+ {
+ .name = "cg2900-chardev",
+ .id = 1,
+ .platform_data = &char_btacl_data,
+ .data_size = sizeof(char_btacl_data),
+ },
+ {
+ .name = "cg2900-chardev",
+ .id = 2,
+ .platform_data = &char_btevt_data,
+ .data_size = sizeof(char_btevt_data),
+ },
+ {
+ .name = "cg2900-chardev",
+ .id = 7,
+ .platform_data = &char_hci_logger_data,
+ .data_size = sizeof(char_hci_logger_data),
+ },
+ {
+ .name = "cg2900-chardev",
+ .id = 8,
+ .platform_data = &char_core_data,
+ .data_size = sizeof(char_core_data),
+ },
+};
+
+/**
+ * set_plat_data() - Initializes data for an MFD cell.
+ * @cell: MFD cell.
+ * @dev: Current chip.
+ *
+ * Sets each callback to default function unless already set.
+ */
+static void set_plat_data(struct mfd_cell *cell, struct cg2900_chip_dev *dev)
+{
+ struct cg2900_user_data *user = cell->platform_data;
+
+ if (!user->open)
+ user->open = stlc2690_open;
+ if (!user->close)
+ user->close = stlc2690_close;
+ if (!user->reset)
+ user->reset = stlc2690_reset;
+ if (!user->alloc_skb)
+ user->alloc_skb = stlc2690_alloc_skb;
+ if (!user->write)
+ user->write = stlc2690_write;
+ if (!user->get_local_revision)
+ user->get_local_revision = stlc2690_get_local_revision;
+
+ cg2900_set_prv(user, dev);
+}
+
+/**
+ * check_chip_support() - Checks if connected chip is handled by this driver.
+ * @dev: Chip info structure.
+ *
+ * If supported return true and fill in @callbacks.
+ *
+ * Returns:
+ * true if chip is handled by this driver.
+ * false otherwise.
+ */
+static bool check_chip_support(struct cg2900_chip_dev *dev)
+{
+ struct cg2900_platform_data *pf_data;
+ struct stlc2690_chip_info *info;
+ int i;
+ int err;
+
+ dev_dbg(dev->dev, "check_chip_support\n");
+
+ /*
+ * Check if this is a STLC2690 revision.
+ * We do not care about the sub-version at the moment. Change this if
+ * necessary.
+ */
+ if (dev->chip.manufacturer != STLC2690_SUPP_MANUFACTURER ||
+ dev->chip.hci_revision < STLC2690_SUPP_REVISION_MIN ||
+ dev->chip.hci_revision > STLC2690_SUPP_REVISION_MAX) {
+ dev_dbg(dev->dev, "Chip not supported by STLC2690 driver\n"
+ "\tMan: 0x%02X\n"
+ "\tRev: 0x%04X\n"
+ "\tSub: 0x%04X\n",
+ dev->chip.manufacturer, dev->chip.hci_revision,
+ dev->chip.hci_sub_version);
+ return false;
+ }
+
+ /* Store needed data */
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ dev_err(dev->dev, "Couldn't allocate info struct\n");
+ return false;
+ }
+
+ /* Initialize all variables */
+ INIT_LIST_HEAD(&info->open_channels);
+ spin_lock_init(&info->rw_lock);
+ info->chip_dev = dev;
+
+ info->wq = create_singlethread_workqueue(WQ_NAME);
+ if (!info->wq) {
+ dev_err(dev->dev, "Could not create workqueue\n");
+ goto err_handling_free_info;
+ }
+
+ info->patch_file_name = kzalloc(NAME_MAX + 1, GFP_ATOMIC);
+ if (!info->patch_file_name) {
+ dev_err(dev->dev,
+ "Couldn't allocate name buffer for patch file\n");
+ goto err_handling_destroy_wq;
+ }
+
+ info->settings_file_name = kzalloc(NAME_MAX + 1, GFP_ATOMIC);
+ if (!info->settings_file_name) {
+ dev_err(dev->dev,
+ "Couldn't allocate name buffers settings file\n");
+ goto err_handling_free_patch_name;
+ }
+
+ dev->c_data = info;
+ /* Set the callbacks */
+ dev->c_cb.data_from_chip = data_from_chip;
+ dev->c_cb.chip_removed = chip_removed,
+ info->chip_dev = dev;
+
+ mutex_lock(&main_info->man_mutex);
+
+ pf_data = dev_get_platdata(dev->dev);
+ btcmd_data.channel_data.bt_bus = pf_data->bus;
+ btacl_data.channel_data.bt_bus = pf_data->bus;
+ btevt_data.channel_data.bt_bus = pf_data->bus;
+
+ for (i = 0; i < ARRAY_SIZE(stlc2690_devs); i++)
+ set_plat_data(&stlc2690_devs[i], dev);
+ for (i = 0; i < ARRAY_SIZE(stlc2690_char_devs); i++)
+ set_plat_data(&stlc2690_char_devs[i], dev);
+
+ err = mfd_add_devices(dev->dev, main_info->cell_base_id, stlc2690_devs,
+ ARRAY_SIZE(stlc2690_devs), NULL, 0);
+ if (err) {
+ dev_err(dev->dev, "Failed to add stlc2690_devs (%d)\n", err);
+ goto err_handling_free_settings_name;
+ }
+
+ err = mfd_add_devices(dev->dev, main_info->cell_base_id,
+ stlc2690_char_devs,
+ ARRAY_SIZE(stlc2690_char_devs), NULL, 0);
+ if (err) {
+ dev_err(dev->dev, "Failed to add stlc2690_char_devs (%d)\n",
+ err);
+ goto err_handling_remove_devs;
+ }
+
+ main_info->cell_base_id += 30;
+ mutex_unlock(&main_info->man_mutex);
+
+ dev_info(dev->dev, "Chip supported by the STLC2690 chip driver\n");
+
+ /* Close the transport, which will power off the chip */
+ if (dev->t_cb.close)
+ dev->t_cb.close(dev);
+
+ dev_dbg(dev->dev, "New main_state: STLC2690_IDLE\n");
+ info->main_state = STLC2690_IDLE;
+
+ return true;
+
+err_handling_remove_devs:
+ mfd_remove_devices(dev->dev);
+err_handling_free_settings_name:
+ kfree(info->settings_file_name);
+err_handling_free_patch_name:
+ kfree(info->patch_file_name);
+err_handling_destroy_wq:
+ destroy_workqueue(info->wq);
+err_handling_free_info:
+ kfree(info);
+ return false;
+}
+
+static struct cg2900_id_callbacks chip_support_callbacks = {
+ .check_chip_support = check_chip_support,
+};
+
+/**
+ * stlc2690_chip_probe() - Initialize STLC2690 chip handler resources.
+ * @pdev: Platform device.
+ *
+ * This function initializes the STLC2690 driver, then registers to
+ * the CG2900 Core.
+ *
+ * Returns:
+ * 0 if success.
+ * -ENOMEM for failed alloc or structure creation.
+ * Error codes generated by cg2900_register_chip_driver.
+ */
+static int __devinit stlc2690_chip_probe(struct platform_device *pdev)
+{
+ int err;
+
+ dev_dbg(&pdev->dev, "stlc2690_chip_probe\n");
+
+ main_info = kzalloc(sizeof(*main_info), GFP_ATOMIC);
+ if (!main_info) {
+ dev_err(&pdev->dev, "Couldn't allocate main_info\n");
+ return -ENOMEM;
+ }
+
+ main_info->dev = &pdev->dev;
+ mutex_init(&main_info->man_mutex);
+
+ err = cg2900_register_chip_driver(&chip_support_callbacks);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Couldn't register chip driver (%d)\n", err);
+ goto error_handling;
+ }
+
+ dev_info(&pdev->dev, "STLC2690 chip driver started\n");
+
+ return 0;
+
+error_handling:
+ mutex_destroy(&main_info->man_mutex);
+ kfree(main_info);
+ main_info = NULL;
+ return err;
+}
+
+/**
+ * stlc2690_chip_remove() - Release STLC2690 chip handler resources.
+ * @pdev: Platform device.
+ *
+ * Returns:
+ * 0 if success (always success).
+ */
+static int __devexit stlc2690_chip_remove(struct platform_device *pdev)
+{
+ dev_info(&pdev->dev, "STLC2690 chip driver removed\n");
+
+ cg2900_deregister_chip_driver(&chip_support_callbacks);
+
+ if (!main_info)
+ return 0;
+
+ mutex_destroy(&main_info->man_mutex);
+ kfree(main_info);
+ main_info = NULL;
+ return 0;
+}
+
+static struct platform_driver stlc2690_chip_driver = {
+ .driver = {
+ .name = "stlc2690-chip",
+ .owner = THIS_MODULE,
+ },
+ .probe = stlc2690_chip_probe,
+ .remove = __devexit_p(stlc2690_chip_remove),
+};
+
+/**
+ * stlc2690_chip_init() - Initialize module.
+ *
+ * Registers platform driver.
+ */
+static int __init stlc2690_chip_init(void)
+{
+ pr_debug("stlc2690_chip_init");
+ return platform_driver_register(&stlc2690_chip_driver);
+}
+
+/**
+ * stlc2690_chip_exit() - Remove module.
+ *
+ * Unregisters platform driver.
+ */
+static void __exit stlc2690_chip_exit(void)
+{
+ pr_debug("stlc2690_chip_exit");
+ platform_driver_unregister(&stlc2690_chip_driver);
+}
+
+module_init(stlc2690_chip_init);
+module_exit(stlc2690_chip_exit);
+
+MODULE_AUTHOR("Par-Gunnar Hjalmdahl ST-Ericsson");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Linux STLC2690 Connectivity Device Driver");
diff --git a/drivers/mfd/cg2900/stlc2690_chip.h b/drivers/mfd/cg2900/stlc2690_chip.h
new file mode 100644
index 0000000..63670c1
--- /dev/null
+++ b/drivers/mfd/cg2900/stlc2690_chip.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ * Authors:
+ * Par-Gunnar Hjalmdahl (par-gunnar.p.hjalmdahl@...ricsson.com) for ST-Ericsson.
+ * Henrik Possung (henrik.possung@...ricsson.com) for ST-Ericsson.
+ * Josef Kindberg (josef.kindberg@...ricsson.com) for ST-Ericsson.
+ * Dariusz Szymszak (dariusz.xd.szymczak@...ricsson.com) for ST-Ericsson.
+ * Kjell Andersson (kjell.k.andersson@...ricsson.com) for ST-Ericsson.
+ * License terms: GNU General Public License (GPL), version 2
+ *
+ * Linux Bluetooth HCI H:4 Driver for ST-Ericsson STLC2690 BT/FM controller.
+ */
+
+#ifndef _STLC2690_CHIP_H_
+#define _STLC2690_CHIP_H_
+
+/* Supported chips */
+#define STLC2690_SUPP_MANUFACTURER 0x30
+#define STLC2690_SUPP_REVISION_MIN 0x0500
+#define STLC2690_SUPP_REVISION_MAX 0x06FF
+
+#define BT_SIZE_OF_HDR (sizeof(__le16) + sizeof(__u8))
+#define BT_PARAM_LEN(__pkt_len) (__pkt_len - BT_SIZE_OF_HDR)
+
+/* BT VS Store In FS command */
+#define STLC2690_BT_OP_VS_STORE_IN_FS 0xFC22
+struct bt_vs_store_in_fs_cmd {
+ __le16 opcode;
+ __u8 plen;
+ __u8 user_id;
+ __u8 len;
+ __u8 data[];
+} __attribute__((packed));
+
+/* BT VS Write File Block command */
+#define STLC2690_BT_OP_VS_WRITE_FILE_BLOCK 0xFC2E
+struct bt_vs_write_file_block_cmd {
+ __le16 opcode;
+ __u8 plen;
+ __u8 id;
+ __u8 data[];
+} __attribute__((packed));
+
+/* User ID for storing BD address in chip using Store_In_FS command */
+#define STLC2690_VS_STORE_IN_FS_USR_ID_BD_ADDR 0xFE
+
+#endif /* _STLC2690_CHIP_H_ */
--
1.7.3.2
--
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