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[209.132.180.67]) by mx.google.com with ESMTP id et3si682924pbc.420.2014.04.02.00.41.15; Wed, 02 Apr 2014 00:41:15 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758071AbaDBHlG (ORCPT + 27 others); Wed, 2 Apr 2014 03:41:06 -0400 Received: from mail-wi0-f179.google.com ([209.85.212.179]:45010 "EHLO mail-wi0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757335AbaDBHlD (ORCPT ); Wed, 2 Apr 2014 03:41:03 -0400 Received: by mail-wi0-f179.google.com with SMTP id z2so4745665wiv.12 for ; Wed, 02 Apr 2014 00:41:00 -0700 (PDT) X-Received: by 10.180.189.139 with SMTP id gi11mr26311135wic.53.1396424460532; Wed, 02 Apr 2014 00:41:00 -0700 (PDT) Received: from localhost.localdomain ([85.235.11.236]) by mx.google.com with ESMTPSA id vc7sm1687429wjc.1.2014.04.02.00.40.58 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 02 Apr 2014 00:40:59 -0700 (PDT) From: Linus Walleij To: Samuel Ortiz , Lee Jones , linux-kernel@vger.kernel.org Cc: Linus Walleij , Russell King , Dmitry Eremin-Solenikov , Alessandro Gardich , Dmitry Artamonow Subject: [PATCH v2] MFD: driver for Atmel Microcontroller on iPaq h3xxx Date: Wed, 2 Apr 2014 09:40:51 +0200 Message-Id: <1396424451-16438-1-git-send-email-linus.walleij@linaro.org> X-Mailer: git-send-email 1.9.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: linus.walleij@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.220.170 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , This adds a driver for the Atmel Microcontroller found on the iPAQ h3xxx series. This device handles some keys, the touchscreen, and the battery monitoring. This is a port of a driver from handhelds.org 2.6.21 kernel, written by Alessandro Gardich based on Andrew Christians original HAL-driver. It has been heavily cleaned and converted to mfd-core by Dmitry Artamonow and rewritten again for the v3.x series kernels by Linus Walleij, bringing back some of the functionality lost from Andrew's original driver. Cc: Russell King Cc: Dmitry Eremin-Solenikov Acked-by: Greg Kroah-Hartman Signed-off-by: Alessandro Gardich Signed-off-by: Dmitry Artamonow Signed-off-by: Linus Walleij --- ChangeLog v1->v2: - Addressed Lee's review comments, added Greg's ACK. --- drivers/mfd/Kconfig | 10 + drivers/mfd/Makefile | 1 + drivers/mfd/ipaq-micro.c | 487 +++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/ipaq-micro.h | 148 +++++++++++++ 4 files changed, 646 insertions(+) create mode 100644 drivers/mfd/ipaq-micro.c create mode 100644 include/linux/mfd/ipaq-micro.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 49bb445d846a..255807afc582 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -242,6 +242,16 @@ config MFD_INTEL_MSIC Passage) chip. This chip embeds audio, battery, GPIO, etc. devices used in Intel Medfield platforms. +config MFD_IPAQ_MICRO + bool "Atmel Micro ASIC (iPAQ h3100/h3600/h3700) Support" + depends on SA1100_H3100 || SA1100_H3600 + select MFD_CORE + help + Select this to get support for the Microcontroller found in + the Compaq iPAQ handheld computers. This is an Atmel + AT90LS8535 microcontroller flashed with a special iPAQ + firmware using the custom protocol implemented in this driver. + config MFD_JANZ_CMODIO tristate "Janz CMOD-IO PCI MODULbus Carrier Board" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 5aea5ef0a62f..cf8081fcb3ac 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -166,3 +166,4 @@ obj-$(CONFIG_MFD_RETU) += retu-mfd.o obj-$(CONFIG_MFD_AS3711) += as3711.o obj-$(CONFIG_MFD_AS3722) += as3722.o obj-$(CONFIG_MFD_STW481X) += stw481x.o +obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c new file mode 100644 index 000000000000..f71dffdd3f0f --- /dev/null +++ b/drivers/mfd/ipaq-micro.c @@ -0,0 +1,487 @@ +/* + * Compaq iPAQ h3xxx Atmel microcontroller companion support + * + * This is an Atmel AT90LS8535 with a special flashed-in firmware that + * implements the special protocol used by this driver. + * + * based on previous kernel 2.4 version by Andrew Christian + * Author : Alessandro Gardich + * Author : Dmitry Artamonow + * Author : Linus Walleij + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +static void ipaq_micro_trigger_tx(struct ipaq_micro *micro) +{ + struct ipaq_micro_txdev *tx = µ->tx; + struct ipaq_micro_msg *msg = micro->msg; + int i, bp; + u8 checksum; + u32 val; + + bp = 0; + tx->buf[bp++] = CHAR_SOF; + + checksum = ((msg->id & 0x0f) << 4) | (msg->tx_len & 0x0f); + tx->buf[bp++] = checksum; + + for (i = 0; i < msg->tx_len; i++) { + tx->buf[bp++] = msg->tx_data[i]; + checksum += msg->tx_data[i]; + } + + tx->buf[bp++] = checksum; + tx->len = bp; + tx->index = 0; + print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_OFFSET, 16, 1, + tx->buf, tx->len, true); + + /* Enable interrupt */ + val = readl(micro->base + UTCR3); + val |= UTCR3_TIE; + writel(val, micro->base + UTCR3); +} + +int ipaq_micro_tx_msg(struct ipaq_micro *micro, struct ipaq_micro_msg *msg) +{ + unsigned long flags; + + dev_dbg(micro->dev, "TX msg: %02x, %d bytes\n", msg->id, msg->tx_len); + + spin_lock_irqsave(µ->lock, flags); + if (micro->msg) { + list_add_tail(&msg->node, µ->queue); + spin_unlock_irqrestore(µ->lock, flags); + return 0; + } + micro->msg = msg; + ipaq_micro_trigger_tx(micro); + spin_unlock_irqrestore(µ->lock, flags); + return 0; +} +EXPORT_SYMBOL(ipaq_micro_tx_msg); + +static void micro_rx_msg(struct ipaq_micro *micro, u8 id, int len, u8 *data) +{ + int i; + + dev_dbg(micro->dev, "RX msg: %02x, %d bytes\n", id, len); + + spin_lock(µ->lock); + switch (id) { + case MSG_VERSION: + case MSG_EEPROM_READ: + case MSG_EEPROM_WRITE: + case MSG_BACKLIGHT: + case MSG_NOTIFY_LED: + case MSG_THERMAL_SENSOR: + case MSG_BATTERY: + /* Handle synchronous messages */ + if (micro->msg && micro->msg->id == id) { + struct ipaq_micro_msg *msg = micro->msg; + + memcpy(msg->rx_data, data, len); + msg->rx_len = len; + complete(µ->msg->ack); + if (!list_empty(µ->queue)) { + micro->msg = list_entry(micro->queue.next, + struct ipaq_micro_msg, + node); + list_del_init(µ->msg->node); + ipaq_micro_trigger_tx(micro); + } else + micro->msg = NULL; + dev_dbg(micro->dev, "OK RX message 0x%02x\n", id); + } else { + dev_err(micro->dev, + "out of band RX message 0x%02x\n", id); + if(!micro->msg) + dev_info(micro->dev, "no message queued\n"); + else + dev_info(micro->dev, "expected message %02x\n", + micro->msg->id); + } + break; + case MSG_KEYBOARD: + if (micro->key) + micro->key(micro->key_data, len, data); + else + dev_dbg(micro->dev, "key message ignored, no handle \n"); + break; + case MSG_TOUCHSCREEN: + if (micro->ts) + micro->ts(micro->ts_data, len, data); + else + dev_dbg(micro->dev, "touchscreen message ignored, no handle \n"); + break; + default: + dev_err(micro->dev, + "unknown msg %d [%d] ", id, len); + for (i = 0; i < len; ++i) + pr_cont("0x%02x ", data[i]); + pr_cont("\n"); + } + spin_unlock(µ->lock); +} + +static void micro_process_char(struct ipaq_micro *micro, u8 ch) +{ + struct ipaq_micro_rxdev *rx = µ->rx; + + switch (rx->state) { + case STATE_SOF: /* Looking for SOF */ + if (ch == CHAR_SOF) + rx->state = STATE_ID; /* Next byte is the id and len */ + break; + case STATE_ID: /* Looking for id and len byte */ + rx->id = (ch & 0xf0) >> 4 ; + rx->len = (ch & 0x0f); + rx->index = 0; + rx->chksum = ch; + rx->state = (rx->len > 0) ? STATE_DATA : STATE_CHKSUM; + break; + case STATE_DATA: /* Looking for 'len' data bytes */ + rx->chksum += ch; + rx->buf[rx->index] = ch; + if (++rx->index == rx->len) + rx->state = STATE_CHKSUM; + break; + case STATE_CHKSUM: /* Looking for the checksum */ + if (ch == rx->chksum) + micro_rx_msg(micro, rx->id, rx->len, rx->buf); + rx->state = STATE_SOF; + break; + } +} + +static void micro_rx_chars(struct ipaq_micro *micro) +{ + u32 status, ch; + + while ((status = readl(micro->base + UTSR1)) & UTSR1_RNE) { + ch = readl(micro->base + UTDR); + if (status & UTSR1_PRE) + dev_err(micro->dev, "rx: parity error\n"); + else if (status & UTSR1_FRE) + dev_err(micro->dev, "rx: framing error\n"); + else if (status & UTSR1_ROR) + dev_err(micro->dev, "rx: overrun error\n"); + micro_process_char(micro, ch); + } +} + +static void ipaq_micro_get_version(struct ipaq_micro *micro) +{ + struct ipaq_micro_msg msg = { + .id = MSG_VERSION, + }; + + ipaq_micro_tx_msg_sync(micro, &msg); + if (msg.rx_len == 4) { + memcpy(micro->version, msg.rx_data, 4); + micro->version[4] = '\0'; + } else if (msg.rx_len == 9) { + memcpy(micro->version, msg.rx_data, 4); + micro->version[4] = '\0'; + /* Bytes 4-7 are "pack", byte 8 is "boot type" */ + } else { + dev_err(micro->dev, + "illegal version message %d bytes\n", msg.rx_len); + } +} + +static void ipaq_micro_eeprom_read(struct ipaq_micro *micro, + u8 address, u8 len, u8 *data) +{ + struct ipaq_micro_msg msg = { + .id = MSG_EEPROM_READ, + }; + u8 i; + + for (i = 0; i < len; i++) { + msg.tx_data[0] = address + i; + msg.tx_data[1] = 1; + msg.tx_len = 2; + ipaq_micro_tx_msg_sync(micro, &msg); + memcpy(data + (i * 2), msg.rx_data, 2); + } +} + +static char *ipaq_micro_str(u8 *wchar, u8 len) +{ + char retstr[256]; + u8 i; + + for (i = 0; i < len / 2; i++) + retstr[i] = wchar[i * 2]; + return kstrdup(retstr, GFP_KERNEL); +} + +static u16 ipaq_micro_to_u16(u8 *data) +{ + return data[1] << 8 | data[0]; +} + +static void ipaq_micro_eeprom_dump(struct ipaq_micro *micro) +{ + u8 dump[256]; + char *str; + + ipaq_micro_eeprom_read(micro, 0, 128, dump); + str = ipaq_micro_str(dump, 10); + if (str) { + dev_info(micro->dev, "HM version %s\n", str); + kfree(str); + } + str = ipaq_micro_str(dump+10, 40); + if (str) { + dev_info(micro->dev, "serial number: %s\n", str); + /* Feed the random pool with this */ + add_device_randomness(str, strlen(str)); + kfree(str); + } + str = ipaq_micro_str(dump+50, 20); + if (str) { + dev_info(micro->dev, "module ID: %s\n", str); + kfree(str); + } + str = ipaq_micro_str(dump+70, 10); + if (str) { + dev_info(micro->dev, "product revision: %s\n", str); + kfree(str); + } + dev_info(micro->dev, "product ID: %u\n", ipaq_micro_to_u16(dump+80)); + dev_info(micro->dev, "frame rate: %u fps\n", + ipaq_micro_to_u16(dump+82)); + dev_info(micro->dev, "page mode: %u\n", ipaq_micro_to_u16(dump+84)); + dev_info(micro->dev, "country ID: %u\n", ipaq_micro_to_u16(dump+86)); + dev_info(micro->dev, "color display: %s\n", + ipaq_micro_to_u16(dump+88) ? "yes" : "no"); + dev_info(micro->dev, "ROM size: %u MiB\n", ipaq_micro_to_u16(dump+90)); + dev_info(micro->dev, "RAM size: %u KiB\n", ipaq_micro_to_u16(dump+92)); + dev_info(micro->dev, "screen: %u x %u\n", + ipaq_micro_to_u16(dump+94), ipaq_micro_to_u16(dump+96)); + print_hex_dump(KERN_DEBUG, "eeprom: ", DUMP_PREFIX_OFFSET, 16, 1, + dump, 256, true); + +} + +static void micro_tx_chars(struct ipaq_micro *micro) +{ + struct ipaq_micro_txdev *tx = µ->tx; + u32 val; + + while ((tx->index < tx->len) && + (readl(micro->base + UTSR1) & UTSR1_TNF)) { + writel(tx->buf[tx->index], micro->base + UTDR); + tx->index++; + } + + /* Stop interrupts */ + val = readl(micro->base + UTCR3); + val &= ~UTCR3_TIE; + writel(val, micro->base + UTCR3); +} + +static void micro_reset_comm(struct ipaq_micro *micro) +{ + struct ipaq_micro_rxdev *rx = µ->rx; + u32 val; + + if (micro->msg) + complete(µ->msg->ack); + + /* Initialize Serial channel protocol frame */ + rx->state = STATE_SOF; /* Reset the state machine */ + + /* Set up interrupts */ + writel(0x01, micro->sdlc + 0x0); /* Select UART mode */ + + /* Clean up CR3 */ + writel(0x0, micro->base + UTCR3); + + /* Format: 8N1 */ + writel(UTCR0_8BitData | UTCR0_1StpBit, micro->base + UTCR0); + + /* Baud rate: 115200 */ + writel(0x0, micro->base + UTCR1); + writel(0x1, micro->base + UTCR2); + + /* Clear SR0 */ + writel(0xff, micro->base + UTSR0); + + /* Enable RX int, disable TX int */ + writel(UTCR3_TXE | UTCR3_RXE | UTCR3_RIE, micro->base + UTCR3); + val = readl(micro->base + UTCR3); + val &= ~UTCR3_TIE; + writel(val, micro->base + UTCR3); +} + +static irqreturn_t micro_serial_isr(int irq, void *dev_id) +{ + struct ipaq_micro *micro = dev_id; + struct ipaq_micro_txdev *tx = µ->tx; + u32 status; + + status = readl(micro->base + UTSR0); + do { + if (status & (UTSR0_RID | UTSR0_RFS)) { + if (status & UTSR0_RID) + /* Clear the Receiver IDLE bit */ + writel(UTSR0_RID, micro->base + UTSR0); + micro_rx_chars(micro); + } + + /* Clear break bits */ + if (status & (UTSR0_RBB | UTSR0_REB)) + writel(status & (UTSR0_RBB | UTSR0_REB), + micro->base + UTSR0); + + if (status & UTSR0_TFS) + micro_tx_chars(micro); + + status = readl(micro->base + UTSR0); + + } while (((tx->index < tx->len) && (status & UTSR0_TFS)) || + (status & (UTSR0_RFS | UTSR0_RID))); + + return IRQ_HANDLED; +} + +static struct mfd_cell micro_cells[] = { + { .name = "ipaq-micro-backlight", }, + { .name = "ipaq-micro-battery", }, + { .name = "ipaq-micro-keys", }, + { .name = "ipaq-micro-ts", }, + { .name = "ipaq-micro-leds", }, +}; + +static int micro_suspend(struct device *dev) +{ + return 0; +} + +static int micro_resume(struct device *dev) +{ + struct ipaq_micro *micro = dev_get_drvdata(dev); + + micro_reset_comm(micro); + mdelay(10); + + return 0; +} + +static int micro_probe(struct platform_device *pdev) +{ + struct ipaq_micro *micro; + struct resource *res; + int ret; + int irq; + + micro = devm_kzalloc(&pdev->dev, sizeof(*micro), GFP_KERNEL); + if (!micro) + return -ENOMEM; + + micro->dev = &pdev->dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + + micro->base = devm_request_and_ioremap(&pdev->dev, res); + if (!micro->base) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) + return -EINVAL; + + micro->sdlc = devm_request_and_ioremap(&pdev->dev, res); + if (!micro->sdlc) + return -ENOMEM; + + micro_reset_comm(micro); + + irq = platform_get_irq(pdev, 0); + if (!irq) + return -EINVAL; + ret = devm_request_irq(&pdev->dev, irq, micro_serial_isr, + IRQF_SHARED, "ipaq-micro", + micro); + if (ret) { + dev_err(&pdev->dev, "unable to grab serial port IRQ\n"); + return ret; + } else + dev_info(&pdev->dev, "grabbed serial port IRQ\n"); + + spin_lock_init(µ->lock); + INIT_LIST_HEAD(µ->queue); + platform_set_drvdata(pdev, micro); + + ret = mfd_add_devices(&pdev->dev, pdev->id, micro_cells, + ARRAY_SIZE(micro_cells), NULL, 0, NULL); + if (ret) { + dev_err(&pdev->dev, "error adding MFD cells"); + return ret; + } + + /* Check version */ + ipaq_micro_get_version(micro); + dev_info(&pdev->dev, "Atmel micro ASIC version %s\n", micro->version); + ipaq_micro_eeprom_dump(micro); + + return 0; +} + +static int micro_remove(struct platform_device *pdev) +{ + struct ipaq_micro *micro = platform_get_drvdata(pdev); + u32 val; + + mfd_remove_devices(&pdev->dev); + + val = readl(micro->base + UTCR3); + val &= ~(UTCR3_RXE | UTCR3_RIE); /* disable receive interrupt */ + val &= ~(UTCR3_TXE | UTCR3_TIE); /* disable transmit interrupt */ + writel(val, micro->base + UTCR3); + + return 0; +} + +static const struct dev_pm_ops micro_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(micro_suspend, micro_resume) +}; + +static struct platform_driver micro_device_driver = { + .driver = { + .name = "ipaq-h3xxx-micro", + .pm = µ_dev_pm_ops, + }, + .probe = micro_probe, + .remove = micro_remove, + /* .shutdown = micro_suspend, // FIXME */ +}; +module_platform_driver(micro_device_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("driver for iPAQ Atmel micro core and backlight"); diff --git a/include/linux/mfd/ipaq-micro.h b/include/linux/mfd/ipaq-micro.h new file mode 100644 index 000000000000..5c4d29f6674f --- /dev/null +++ b/include/linux/mfd/ipaq-micro.h @@ -0,0 +1,148 @@ +/* + * Header file for the compaq Micro MFD + */ + +#ifndef _MFD_IPAQ_MICRO_H_ +#define _MFD_IPAQ_MICRO_H_ + +#include +#include +#include + +#define TX_BUF_SIZE 32 +#define RX_BUF_SIZE 16 +#define CHAR_SOF 0x02 + +/* + * These are the different messages that can be sent to the microcontroller + * to control various aspects. + */ +#define MSG_VERSION 0x0 +#define MSG_KEYBOARD 0x2 +#define MSG_TOUCHSCREEN 0x3 +#define MSG_EEPROM_READ 0x4 +#define MSG_EEPROM_WRITE 0x5 +#define MSG_THERMAL_SENSOR 0x6 +#define MSG_NOTIFY_LED 0x8 +#define MSG_BATTERY 0x9 +#define MSG_SPI_READ 0xb +#define MSG_SPI_WRITE 0xc +#define MSG_BACKLIGHT 0xd /* H3600 only */ +#define MSG_CODEC_CTRL 0xe /* H3100 only */ +#define MSG_DISPLAY_CTRL 0xf /* H3100 only */ + +/* state of receiver parser */ +enum rx_state { + STATE_SOF = 0, /* Next byte should be start of frame */ + STATE_ID, /* Next byte is ID & message length */ + STATE_DATA, /* Next byte is a data byte */ + STATE_CHKSUM /* Next byte should be checksum */ +}; + +/** + * struct ipaq_micro_txdev - TX state + * @len: length of message in TX buffer + * @index: current index into TX buffer + * @buf: TX buffer + */ +struct ipaq_micro_txdev { + u8 len; + u8 index; + u8 buf[TX_BUF_SIZE]; +}; + +/** + * struct ipaq_micro_rxdev - RX state + * @state: context of RX state machine + * @chksum: calculated checksum + * @id: message ID from packet + * @len: RX buffer length + * @index: RX buffer index + * @buf: RX buffer + */ +struct ipaq_micro_rxdev { + enum rx_state state; + unsigned char chksum; + u8 id; + unsigned int len; + unsigned int index; + u8 buf[RX_BUF_SIZE]; +}; + +/** + * struct ipaq_micro_msg - message to the iPAQ microcontroller + * @id: 4-bit ID of the message + * @tx_len: length of TX data + * @tx_data: TX data to send + * @rx_len: length of receieved RX data + * @rx_data: RX data to recieve + * @ack: a completion that will be completed when RX is complete + * @node: list node if message gets queued + */ +struct ipaq_micro_msg { + u8 id; + u8 tx_len; + u8 tx_data[TX_BUF_SIZE]; + u8 rx_len; + u8 rx_data[RX_BUF_SIZE]; + struct completion ack; + struct list_head node; +}; + +/** + * struct ipaq_micro - iPAQ microcontroller state + * @dev: corresponding platform device + * @base: virtual memory base for underlying serial device + * @sdlc: virtual memory base for Synchronous Data Link Controller + * @version: version string + * @tx: TX state + * @rx: RX state + * @lock: lock for this state container + * @msg: current message + * @queue: message queue + * @key: callback for asynchronous key events + * @key_data: data to pass along with key events + * @ts: callback for asynchronous touchscreen events + * @ts_data: data to pass along with key events + */ +struct ipaq_micro { + struct device *dev; + void __iomem *base; + void __iomem *sdlc; + char version[5]; + struct ipaq_micro_txdev tx; /* transmit ISR state */ + struct ipaq_micro_rxdev rx; /* receive ISR state */ + spinlock_t lock; + struct ipaq_micro_msg *msg; + struct list_head queue; + void (*key) (void *data, int len, unsigned char *rxdata); + void *key_data; + void (*ts) (void *data, int len, unsigned char *rxdata); + void *ts_data; +}; + +extern int +ipaq_micro_tx_msg(struct ipaq_micro *micro, struct ipaq_micro_msg *msg); + +static inline int +ipaq_micro_tx_msg_sync(struct ipaq_micro *micro, + struct ipaq_micro_msg *msg) +{ + int ret; + + init_completion(&msg->ack); + ret = ipaq_micro_tx_msg(micro, msg); + wait_for_completion(&msg->ack); + + return ret; +} + +static inline int +ipaq_micro_tx_msg_async(struct ipaq_micro *micro, + struct ipaq_micro_msg *msg) +{ + init_completion(&msg->ack); + return ipaq_micro_tx_msg(micro, msg); +} + +#endif /* _MFD_IPAQ_MICRO_H_ */