From patchwork Thu Dec 30 11:11:43 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: manjunatha_halli@ti.com X-Patchwork-Id: 440471 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oBUMBEn2000490 for ; Thu, 30 Dec 2010 22:12:48 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754052Ab0L3Ksf (ORCPT ); Thu, 30 Dec 2010 05:48:35 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:37238 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753420Ab0L3Ksc (ORCPT ); Thu, 30 Dec 2010 05:48:32 -0500 Received: from dlep34.itg.ti.com ([157.170.170.115]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id oBUAmLUI015972 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 30 Dec 2010 04:48:21 -0600 Received: from localhost.localdomain (localhost [127.0.0.1]) by dlep34.itg.ti.com (8.13.7/8.13.7) with ESMTP id oBUAmH5S021230; Thu, 30 Dec 2010 04:48:17 -0600 (CST) From: manjunatha_halli@ti.com To: mchehab@infradead.org, hverkuil@xs4all.nl Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Manjunatha Halli Subject: [RFC V8 3/7] drivers:media:radio: wl128x: fmdrv_common sources Date: Thu, 30 Dec 2010 06:11:43 -0500 Message-Id: <1293707507-3376-4-git-send-email-manjunatha_halli@ti.com> X-Mailer: git-send-email 1.5.6.5 In-Reply-To: <1293707507-3376-3-git-send-email-manjunatha_halli@ti.com> References: <1293707507-3376-1-git-send-email-manjunatha_halli@ti.com> <1293707507-3376-2-git-send-email-manjunatha_halli@ti.com> <1293707507-3376-3-git-send-email-manjunatha_halli@ti.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Thu, 30 Dec 2010 22:12:49 +0000 (UTC) diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c new file mode 100644 index 0000000..874dbd8 --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_common.c @@ -0,0 +1,1970 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * + * This sub-module of FM driver is common for FM RX and TX + * functionality. This module is responsible for: + * 1) Forming group of Channel-8 commands to perform particular + * functionality (eg., frequency set require more than + * one Channel-8 command to be sent to the chip). + * 2) Sending each Channel-8 command to the chip and reading + * response back over Shared Transport. + * 3) Managing TX and RX Queues and Tasklets. + * 4) Handling FM Interrupt packet and taking appropriate action. + * 5) Loading FM firmware to the chip (common, FM TX, and FM RX + * firmware files based on mode selection) + * + * Copyright (C) 2010 Texas Instruments + * Author: Raja Mani + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include "fmdrv.h" +#include "fmdrv_v4l2.h" +#include "fmdrv_common.h" +#include +#include "fmdrv_rx.h" +#include "fmdrv_tx.h" + +/* Region info */ +static struct region_info region_configs[] = { + /* Europe/US */ + { + .channel_spacing = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL, + .bottom_frequency = 87500, /* 87.5 MHz */ + .top_frequency = 108000, /* 108 MHz */ + .region_index = 0, + }, + /* Japan */ + { + .channel_spacing = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL, + .bottom_frequency = 76000, /* 76 MHz */ + .top_frequency = 90000, /* 90 MHz */ + .region_index = 1, + }, +}; + +/* Band selection */ +static unsigned char default_radio_region; /* Europe/US */ +module_param(default_radio_region, byte, 0); +MODULE_PARM_DESC(default_radio_region, "Region: 0=Europe/US, 1=Japan"); + +/* RDS buffer blocks */ +static unsigned int default_rds_buf = 300; +module_param(default_rds_buf, uint, 0444); +MODULE_PARM_DESC(rds_buf, "RDS buffer entries"); + +/* Radio Nr */ +static int radio_nr = -1; +module_param(radio_nr, int, 0444); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + +/* FM irq handlers forward declaration */ +static void fm_irq_send_flag_getcmd(void *); +static void fm_irq_handle_flag_getcmd_resp(void *); +static void fm_irq_handle_hw_malfunction(void *); +static void fm_irq_handle_rds_start(void *); +static void fm_irq_send_rdsdata_getcmd(void *); +static void fm_irq_handle_rdsdata_getcmd_resp(void *); +static void fm_irq_handle_rds_finish(void *); +static void fm_irq_handle_tune_op_ended(void *); +static void fm_irq_handle_power_enb(void *); +static void fm_irq_handle_low_rssi_start(void *); +static void fm_irq_afjump_set_pi(void *); +static void fm_irq_handle_set_pi_resp(void *); +static void fm_irq_afjump_set_pimask(void *); +static void fm_irq_handle_set_pimask_resp(void *); +static void fm_irq_afjump_setfreq(void *); +static void fm_irq_handle_setfreq_resp(void *); +static void fm_irq_afjump_enableint(void *); +static void fm_irq_afjump_enableint_resp(void *); +static void fm_irq_start_afjump(void *); +static void fm_irq_handle_start_afjump_resp(void *); +static void fm_irq_afjump_rd_freq(void *); +static void fm_irq_afjump_rd_freq_resp(void *); +static void fm_irq_handle_low_rssi_finish(void *); +static void fm_irq_send_intmsk_cmd(void *); +static void fm_irq_handle_intmsk_cmd_resp(void *); + +/* + * When FM common module receives interrupt packet, following handlers + * will be executed one after another to service the interrupt(s) + */ +enum fmc_irq_handler_index { + FM_SEND_FLAG_GETCMD_INDEX, + FM_HANDLE_FLAG_GETCMD_RESP_INDEX, + + /* HW malfunction irq handler */ + FM_HW_MAL_FUNC_INDEX, + + /* RDS threshold reached irq handler */ + FM_RDS_START_INDEX, + FM_RDS_SEND_RDS_GETCMD_INDEX, + FM_RDS_HANDLE_RDS_GETCMD_RESP_INDEX, + FM_RDS_FINISH_INDEX, + + /* Tune operation ended irq handler */ + FM_HW_TUNE_OP_ENDED_INDEX, + + /* TX power enable irq handler */ + FM_HW_POWER_ENB_INDEX, + + /* Low RSSI irq handler */ + FM_LOW_RSSI_START_INDEX, + FM_AF_JUMP_SETPI_INDEX, + FM_AF_JUMP_HANDLE_SETPI_RESP_INDEX, + FM_AF_JUMP_SETPI_MASK_INDEX, + FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_INDEX, + FM_AF_JUMP_SET_AF_FREQ_INDEX, + FM_AF_JUMP_HENDLE_SET_AFFREQ_RESP_INDEX, + FM_AF_JUMP_ENABLE_INT_INDEX, + FM_AF_JUMP_ENABLE_INT_RESP_INDEX, + FM_AF_JUMP_START_AFJUMP_INDEX, + FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_INDEX, + FM_AF_JUMP_RD_FREQ_INDEX, + FM_AF_JUMP_RD_FREQ_RESP_INDEX, + FM_LOW_RSSI_FINISH_INDEX, + + /* Interrupt process post action */ + FM_SEND_INTMSK_CMD_INDEX, + FM_HANDLE_INTMSK_CMD_RESP_INDEX, +}; + +/* FM interrupt handler table */ +static int_handler_prototype g_IntHandlerTable[] = { + fm_irq_send_flag_getcmd, + fm_irq_handle_flag_getcmd_resp, + fm_irq_handle_hw_malfunction, + fm_irq_handle_rds_start, /* RDS threshold reached irq handler */ + fm_irq_send_rdsdata_getcmd, + fm_irq_handle_rdsdata_getcmd_resp, + fm_irq_handle_rds_finish, + fm_irq_handle_tune_op_ended, + fm_irq_handle_power_enb, /* TX power enable irq handler */ + fm_irq_handle_low_rssi_start, + fm_irq_afjump_set_pi, + fm_irq_handle_set_pi_resp, + fm_irq_afjump_set_pimask, + fm_irq_handle_set_pimask_resp, + fm_irq_afjump_setfreq, + fm_irq_handle_setfreq_resp, + fm_irq_afjump_enableint, + fm_irq_afjump_enableint_resp, + fm_irq_start_afjump, + fm_irq_handle_start_afjump_resp, + fm_irq_afjump_rd_freq, + fm_irq_afjump_rd_freq_resp, + fm_irq_handle_low_rssi_finish, + fm_irq_send_intmsk_cmd, /* Interrupt process post action */ + fm_irq_handle_intmsk_cmd_resp +}; + +long (*g_st_write) (struct sk_buff *skb); +static struct completion wait_for_fmdrv_reg_comp; + +#ifdef FM_DUMP_TXRX_PKT + /* To dump outgoing FM Channel-8 packets */ +inline void dump_tx_skb_data(struct sk_buff *skb) +{ + int len, len_org; + char index; + struct fm_cmd_msg_hdr *cmd_hdr; + + cmd_hdr = (struct fm_cmd_msg_hdr *)skb->data; + printk(KERN_INFO "<<%shdr:%02x len:%02x opcode:%02x type:%s dlen:%02x", + fm_cb(skb)->completion ? " " : "*", cmd_hdr->header, + cmd_hdr->len, cmd_hdr->fm_opcode, + cmd_hdr->rd_wr ? "RD" : "WR", cmd_hdr->dlen); + + len_org = skb->len - FM_CMD_MSG_HDR_SIZE; + if (len_org > 0) { + printk("\n data(%d): ", cmd_hdr->dlen); + len = min(len_org, 14); + for (index = 0; index < len; index++) + printk("%x ", + skb->data[FM_CMD_MSG_HDR_SIZE + index]); + printk("%s", (len_org > 14) ? ".." : ""); + } + printk("\n"); +} + + /* To dump incoming FM Channel-8 packets */ +inline void dump_rx_skb_data(struct sk_buff *skb) +{ + int len, len_org; + char index; + struct fm_event_msg_hdr *evt_hdr; + + evt_hdr = (struct fm_event_msg_hdr *)skb->data; + printk(KERN_INFO ">> hdr:%02x len:%02x sts:%02x numhci:%02x " + "opcode:%02x type:%s dlen:%02x", evt_hdr->header, evt_hdr->len, + evt_hdr->status, evt_hdr->num_fm_hci_cmds, evt_hdr->fm_opcode, + (evt_hdr->rd_wr) ? "RD" : "WR", evt_hdr->dlen); + + len_org = skb->len - FM_EVT_MSG_HDR_SIZE; + if (len_org > 0) { + printk("\n data(%d): ", evt_hdr->dlen); + len = min(len_org, 14); + for (index = 0; index < len; index++) + printk("%x ", + skb->data[FM_EVT_MSG_HDR_SIZE + index]); + printk("%s", (len_org > 14) ? ".." : ""); + } + printk("\n"); +} +#endif + +void fmc_update_region_info(struct fmdrv_ops *fmdev, + unsigned char region_to_set) +{ + memcpy(&fmdev->rx.region, ®ion_configs[region_to_set], + sizeof(struct region_info)); +} + +/* + * FM common sub-module will schedule this tasklet whenever it receives + * FM packet from ST driver. + */ +static void __recv_tasklet(unsigned long arg) +{ + struct fmdrv_ops *fmdev; + struct fm_event_msg_hdr *fm_evt_hdr; + struct sk_buff *skb; + unsigned char num_fm_hci_cmds; + unsigned long flags; + + fmdev = (struct fmdrv_ops *)arg; + /* Process all packets in the RX queue */ + while ((skb = skb_dequeue(&fmdev->rx_q))) { + if (skb->len < sizeof(struct fm_event_msg_hdr)) { + pr_err("(fmdrv): skb(%p) has only %d bytes" + "atleast need %d bytes to decode\n", + skb, skb->len, + sizeof(struct fm_event_msg_hdr)); + kfree_skb(skb); + continue; + } + + fm_evt_hdr = (void *)skb->data; + num_fm_hci_cmds = fm_evt_hdr->num_fm_hci_cmds; + + /* FM interrupt packet? */ + if (fm_evt_hdr->fm_opcode == FM_INTERRUPT) { + /* FM interrupt handler started already? */ + if (!test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) { + set_bit(FM_INTTASK_RUNNING, &fmdev->flag); + if (fmdev->irq_info.stage_index != 0) { + pr_err("(fmdrv): Invalid stage index," + "resetting to zero\n"); + fmdev->irq_info.stage_index = 0; + } + + /* + * Execute first function in interrupt handler + * table. + */ + fmdev->irq_info.fm_int_handlers + [fmdev->irq_info.stage_index](fmdev); + } else { + set_bit(FM_INTTASK_SCHEDULE_PENDING, + &fmdev->flag); + } + kfree_skb(skb); + } + /* Anyone waiting for this with completion handler? */ + else if (fm_evt_hdr->fm_opcode == fmdev->last_sent_pkt_opcode && + fmdev->response_completion != NULL) { + if (fmdev->response_skb != NULL) + pr_err("(fmdrv): Response SKB ptr not NULL\n"); + + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + fmdev->response_skb = skb; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + complete(fmdev->response_completion); + + fmdev->response_completion = NULL; + atomic_set(&fmdev->tx_cnt, 1); + } + /* Is this for interrupt handler? */ + else if (fm_evt_hdr->fm_opcode == fmdev->last_sent_pkt_opcode && + fmdev->response_completion == NULL) { + if (fmdev->response_skb != NULL) + pr_err("(fmdrv): Response SKB ptr not NULL\n"); + + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + fmdev->response_skb = skb; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + + /* Execute interrupt handler where state index points */ + fmdev->irq_info.fm_int_handlers + [fmdev->irq_info.stage_index](fmdev); + + kfree_skb(skb); + atomic_set(&fmdev->tx_cnt, 1); + } else { + pr_err("(fmdrv): Nobody claimed SKB(%p),purging\n", + skb); + } + + /* + * Check flow control field. If Num_FM_HCI_Commands field is + * not zero, schedule FM TX tasklet. + */ + if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt)) + if (!skb_queue_empty(&fmdev->tx_q)) + tasklet_schedule(&fmdev->tx_task); + } +} + +/* FM send tasklet: is scheduled when FM packet has to be sent to chip */ +static void __send_tasklet(unsigned long arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int len; + + fmdev = (struct fmdrv_ops *)arg; + /* Check, is there any timeout happenned to last transmitted packet */ + if (!atomic_read(&fmdev->tx_cnt) && + ((jiffies - fmdev->last_tx_jiffies) > FM_DRV_TX_TIMEOUT)) { + pr_err("(fmdrv): TX timeout occurred\n"); + atomic_set(&fmdev->tx_cnt, 1); + } + /* Send queued FM TX packets */ + if (atomic_read(&fmdev->tx_cnt)) { + skb = skb_dequeue(&fmdev->tx_q); + if (skb) { + atomic_dec(&fmdev->tx_cnt); + fmdev->last_sent_pkt_opcode = fm_cb(skb)->fm_opcode; + + if (fmdev->response_completion != NULL) + pr_err("(fmdrv): Response completion handler" + "is not NULL\n"); + + fmdev->response_completion = fm_cb(skb)->completion; + + /* Write FM packet to ST driver */ + len = g_st_write(skb); + if (len < 0) { + kfree_skb(skb); + fmdev->response_completion = NULL; + pr_err("(fmdrv): TX tasklet failed to send" + "skb(%p)\n", skb); + atomic_set(&fmdev->tx_cnt, 1); + } else { + fmdev->last_tx_jiffies = jiffies; + } + } + } +} + +/* + * Queues FM Channel-8 packet to FM TX queue and schedules FM TX tasklet for + * transmission + */ +static int __fm_send_cmd(struct fmdrv_ops *fmdev, unsigned char fm_opcode, + unsigned short int type, void *payload, + int payload_len, + struct completion *wait_completion) +{ + struct sk_buff *skb; + struct fm_cmd_msg_hdr *cmd_hdr; + int size; + + + if (fm_opcode >= FM_INTERRUPT) { + pr_err("(fmdrv): Invalid fm register index\n"); + return -EINVAL; + } + if (test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag) && + payload == NULL) { + pr_err("(fmdrv): Payload data is NULL during fw download\n"); + return -EINVAL; + } + if (!test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag)) + size = + FM_CMD_MSG_HDR_SIZE + ((payload == NULL) ? 0 : payload_len); + else + size = payload_len; + + skb = alloc_skb(size, GFP_ATOMIC); + if (!skb) { + pr_err("(fmdrv): No memory to create new SKB\n"); + return -ENOMEM; + } + /* + * Don't fill FM header info for the commands which come from + * FM firmware file. + */ + if (!test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag) || + test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) { + /* Fill command header info */ + cmd_hdr = + (struct fm_cmd_msg_hdr *)skb_put(skb, FM_CMD_MSG_HDR_SIZE); + cmd_hdr->header = FM_PKT_LOGICAL_CHAN_NUMBER; /* 0x08 */ + /* 3 (fm_opcode,rd_wr,dlen) + payload len) */ + cmd_hdr->len = ((payload == NULL) ? 0 : payload_len) + 3; + /* FM opcode */ + cmd_hdr->fm_opcode = fm_opcode; + /* read/write type */ + cmd_hdr->rd_wr = type; + cmd_hdr->dlen = payload_len; + fm_cb(skb)->fm_opcode = fm_opcode; + /* + * If firmware download has finished and the command is + * not a read command then payload is != NULL - a write + * command with unsigned short payload - convert to be16 + */ + if (payload != NULL) + *(unsigned short *)payload = + cpu_to_be16(*(unsigned short *)payload); + } else if (payload != NULL) { + fm_cb(skb)->fm_opcode = *((char *)payload + 2); + } + if (payload != NULL) + memcpy(skb_put(skb, payload_len), payload, payload_len); + + fm_cb(skb)->completion = wait_completion; + skb_queue_tail(&fmdev->tx_q, skb); + tasklet_schedule(&fmdev->tx_task); + + return 0; +} + +/* Sends FM Channel-8 command to the chip and waits for the reponse */ +int fmc_send_cmd(struct fmdrv_ops *fmdev, unsigned char fm_opcode, + unsigned short int type, void *payload, int payload_len, + void *reponse, int *reponse_len) +{ + struct sk_buff *skb; + struct fm_event_msg_hdr *fm_evt_hdr; + unsigned long timeleft; + unsigned long flags; + int ret; + + init_completion(&fmdev->maintask_completion); + ret = __fm_send_cmd(fmdev, fm_opcode, type, payload, payload_len, + &fmdev->maintask_completion); + if (ret < 0) + goto exit; + + timeleft = wait_for_completion_timeout(&fmdev->maintask_completion, + FM_DRV_TX_TIMEOUT); + if (!timeleft) { + pr_err("(fmdrv): Timeout(%d sec),didn't get reg" + "completion signal from RX tasklet\n", + jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); + return -ETIMEDOUT; + goto exit; + } + if (!fmdev->response_skb) { + pr_err("(fmdrv): Reponse SKB is missing\n"); + return -EFAULT; + goto exit; + } + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + skb = fmdev->response_skb; + fmdev->response_skb = NULL; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + + fm_evt_hdr = (void *)skb->data; + if (fm_evt_hdr->status != 0) { + pr_err("(fmdrv): Received event pkt status(%d) is not zero\n", + fm_evt_hdr->status); + kfree_skb(skb); + ret = -EIO; + goto exit; + } + /* Send reponse data to caller */ + if (reponse != NULL && reponse_len != NULL && fm_evt_hdr->dlen) { + /* Skip header info and copy only response data */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + memcpy(reponse, skb->data, fm_evt_hdr->dlen); + *reponse_len = fm_evt_hdr->dlen; + } else if (reponse_len != NULL && fm_evt_hdr->dlen == 0) { + *reponse_len = 0; + } + kfree_skb(skb); +exit: + if (ret < 0) { + pr_err("(fmdrv): Command %d failed\n", fm_opcode); + return ret; + } + + return ret; +} + +/* --- Helper functions used in FM interrupt handlers ---*/ +static inline int __check_cmdresp_status(struct fmdrv_ops *fmdev, + struct sk_buff **skb) +{ + struct fm_event_msg_hdr *fm_evt_hdr; + unsigned long flags; + + del_timer(&fmdev->irq_info.int_timeout_timer); + + spin_lock_irqsave(&fmdev->resp_skb_lock, flags); + *skb = fmdev->response_skb; + fmdev->response_skb = NULL; + spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags); + + fm_evt_hdr = (void *)(*skb)->data; + if (fm_evt_hdr->status != 0) { + pr_err("(fmdrv): irq: opcode %x response status is not zero " + "Initiating irq recovery process\n", + fm_evt_hdr->fm_opcode); + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); + return -1; + } + + return 0; +} + +/* + * Interrupt process timeout handler. + * One of the irq handler did not get proper response from the chip. So take + * recovery action here. FM interrupts are disabled in the beginning of + * interrupt process. Therefore reset stage index to re-enable default + * interrupts. So that next interrupt will be processed as usual. + */ +static void __int_timeout_handler(unsigned long data) +{ + struct fmdrv_ops *fmdev; + + pr_debug("(fmdrv): irq: timeout,trying to re-enable fm interrupts\n"); + fmdev = (struct fmdrv_ops *)data; + fmdev->irq_info.irq_service_timeout_retry++; + + if (fmdev->irq_info.irq_service_timeout_retry <= + FM_IRQ_TIMEOUT_RETRY_MAX) { + fmdev->irq_info.stage_index = FM_SEND_INTMSK_CMD_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info. + stage_index] (fmdev); + } else { + /* + * Stop recovery action (interrupt reenable process) and + * reset stage index & retry count values + */ + fmdev->irq_info.stage_index = 0; + fmdev->irq_info.irq_service_timeout_retry = 0; + pr_err("(fmdrv): Recovery action failed during" + "irq processing, max retry reached\n"); + } +} + +/* --------- FM interrupt handlers ------------*/ +static void fm_irq_send_flag_getcmd(void *arg) +{ + struct fmdrv_ops *fmdev; + unsigned short flag; + int ret; + + fmdev = arg; + /* Send FLAG_GET command , to know the source of interrupt */ + ret = __fm_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, sizeof(flag), NULL); + if (ret) + pr_err("(fmdrv): irq: failed to send flag_get command," + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = FM_HANDLE_FLAG_GETCMD_RESP_INDEX; + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_handle_flag_getcmd_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + struct fm_event_msg_hdr *fm_evt_hdr; + char ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + fm_evt_hdr = (void *)skb->data; + + /* Skip header info and copy only response data */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + memcpy(&fmdev->irq_info.flag, skb->data, fm_evt_hdr->dlen); + + fmdev->irq_info.flag = be16_to_cpu(fmdev->irq_info.flag); + pr_debug("(fmdrv): irq: flag register(0x%x)\n", fmdev->irq_info.flag); + + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_HW_MAL_FUNC_INDEX; + + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_hw_malfunction(void *arg) +{ + struct fmdrv_ops *fmdev; + + fmdev = arg; + if (fmdev->irq_info.flag & FM_MAL_EVENT & fmdev->irq_info.mask) + pr_err("(fmdrv): irq: HW MAL int received - do nothing\n"); + + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_RDS_START_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_rds_start(void *arg) +{ + struct fmdrv_ops *fmdev; + + fmdev = arg; + if (fmdev->irq_info.flag & FM_RDS_EVENT & fmdev->irq_info.mask) { + pr_debug("(fmdrv): irq: rds threshold reached\n"); + fmdev->irq_info.stage_index = FM_RDS_SEND_RDS_GETCMD_INDEX; + } else { + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_HW_TUNE_OP_ENDED_INDEX; + } + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_send_rdsdata_getcmd(void *arg) +{ + struct fmdrv_ops *fmdev; + int ret; + + fmdev = arg; + /* Send the command to read RDS data from the chip */ + ret = __fm_send_cmd(fmdev, RDS_DATA_GET, REG_RD, NULL, + (FM_RX_RDS_FIFO_THRESHOLD * 3), NULL); + if (ret < 0) + pr_err("(fmdrv): irq : failed to send rds get command," + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = + FM_RDS_HANDLE_RDS_GETCMD_RESP_INDEX; + + /* Start timer to track timeout */ + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +/* Keeps track of current RX channel AF (Alternate Frequency) */ +static void __fm_rx_update_af_cache(struct fmdrv_ops *fmdev, + unsigned char af) +{ + unsigned char index; + unsigned int freq; + + /* First AF indicates the number of AF follows. Reset the list */ + if ((af >= FM_RDS_1_AF_FOLLOWS) && (af <= FM_RDS_25_AF_FOLLOWS)) { + fmdev->rx.cur_station_info.af_list_max = + (af - FM_RDS_1_AF_FOLLOWS + 1); + fmdev->rx.cur_station_info.no_of_items_in_afcache = 0; + pr_debug("(fmdrv): No of expected AF : %d\n", + fmdev->rx.cur_station_info.af_list_max); + } else if (((af >= FM_RDS_MIN_AF) + && (fmdev->rx.region.region_index == FM_BAND_EUROPE_US) + && (af <= FM_RDS_MAX_AF)) || ((af >= FM_RDS_MIN_AF) + && (fmdev->rx.region. + region_index == + FM_BAND_JAPAN) + && (af <= + FM_RDS_MAX_AF_JAPAN))) { + freq = fmdev->rx.region.bottom_frequency + (af * 100); + if (freq == fmdev->rx.curr_freq) { + pr_debug("(fmdrv): Current frequency(%d) is" + "matching with received AF(%d)\n", + fmdev->rx.curr_freq, freq); + return; + } + /* Do check in AF cache */ + for (index = 0; + index < fmdev->rx.cur_station_info.no_of_items_in_afcache; + index++) { + if (fmdev->rx.cur_station_info.af_cache[index] == freq) + break; + } + /* Reached the limit of the list - ignore the next AF */ + if (index == fmdev->rx.cur_station_info.af_list_max) { + pr_debug("(fmdrv): AF cache is full\n"); + return; + } + /* + * If we reached the end of the list then this AF is not + * in the list - add it. + */ + if (index == fmdev->rx.cur_station_info. + no_of_items_in_afcache) { + pr_debug("(fmdrv): Storing AF %d to cache index %d\n", + freq, index); + fmdev->rx.cur_station_info.af_cache[index] = freq; + fmdev->rx.cur_station_info.no_of_items_in_afcache++; + } + } +} + +/* + * Converts RDS buffer data from big endian format + * to little endian format. + */ +static void __fm_rdsparse_swapbytes(struct fmdrv_ops *fmdev, + struct fm_rdsdata_format *rds_format) +{ + unsigned char byte1; + unsigned char index = 0; + char *rds_buff; + + /* + * Since in Orca the 2 RDS Data bytes are in little endian and + * in Dolphin they are in big endian, the parsing of the RDS data + * is chip dependent + */ + if (fmdev->asci_id != 0x6350) { + rds_buff = &rds_format->rdsdata.groupdatabuff.rdsbuff[0]; + while (index + 1 < FM_RX_RDS_INFO_FIELD_MAX) { + byte1 = rds_buff[index]; + rds_buff[index] = rds_buff[index + 1]; + rds_buff[index + 1] = byte1; + index += 2; + } + } +} + +static void fm_irq_handle_rdsdata_getcmd_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + char *rds_data; + char meta_data; + unsigned char type, block_index; + unsigned long group_index; + struct fm_rdsdata_format rds_format; + int rds_len, ret; + unsigned short cur_picode; + unsigned char tmpbuf[3]; + unsigned long flags; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + /* Skip header info */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + rds_data = skb->data; + rds_len = skb->len; + + /* Parse the RDS data */ + while (rds_len >= FM_RDS_BLOCK_SIZE) { + meta_data = rds_data[2]; + /* + * Get the type: + * 0=A, 1=B, 2=C, 3=C', 4=D, 5=E + */ + type = (meta_data & 0x07); + + /* + * Transform the block type into an + * index sequence (0, 1, 2, 3, 4) + */ + block_index = (type <= FM_RDS_BLOCK_C ? type : (type - 1)); + pr_debug("(fmdrv): Block index:%d(%s)\n", block_index, + (meta_data & FM_RDS_STATUS_ERROR_MASK) ? "Bad" : + "Ok"); + if (((meta_data & FM_RDS_STATUS_ERROR_MASK) == 0) + && (block_index == FM_RDS_BLOCK_INDEX_A + || (block_index == fmdev->rx.rds.last_block_index + 1 + && block_index <= FM_RDS_BLOCK_INDEX_D))) { + /* + * Skip checkword (control) byte and copy only data + * byte + */ + memcpy(&rds_format.rdsdata.groupdatabuff. + rdsbuff[block_index * (FM_RDS_BLOCK_SIZE - 1)], + rds_data, (FM_RDS_BLOCK_SIZE - 1)); + fmdev->rx.rds.last_block_index = block_index; + + /* If completed a whole group then handle it */ + if (block_index == FM_RDS_BLOCK_INDEX_D) { + pr_debug("(fmdrv): Good block received\n"); + __fm_rdsparse_swapbytes(fmdev, &rds_format); + + /* + * Extract PI code and store in local cache. + * We need this during AF switch processing. + */ + cur_picode = be16_to_cpu + (rds_format.rdsdata.groupgeneral.pidata); + if (fmdev->rx.cur_station_info.picode != + cur_picode) + fmdev->rx.cur_station_info.picode = + cur_picode; + pr_debug("(fmdrv): picode:%d\n", cur_picode); + + group_index = + (rds_format.rdsdata.groupgeneral. + block_b_byte1 >> 3); + pr_debug("(fmdrv):Group:%ld%s\n", group_index/2, + (group_index % 2) ? "B" : "A"); + + group_index = + 1 << (rds_format.rdsdata.groupgeneral. + block_b_byte1 >> 3); + if (group_index == FM_RDS_GROUP_TYPE_MASK_0A) { + __fm_rx_update_af_cache + (fmdev, rds_format.rdsdata. + group0A.firstaf); + __fm_rx_update_af_cache + (fmdev, rds_format. + rdsdata.group0A.secondaf); + } + } + } else { + pr_debug("(fmdrv): Block sequence mismatch\n"); + fmdev->rx.rds.last_block_index = -1; + } + rds_len -= FM_RDS_BLOCK_SIZE; + rds_data += FM_RDS_BLOCK_SIZE; + } + + /* Copy raw rds data to internal rds buffer */ + rds_data = skb->data; + rds_len = skb->len; + + spin_lock_irqsave(&fmdev->rds_buff_lock, flags); + while (rds_len > 0) { + /* + * Fill RDS buffer as per V4L2 specification. + * Store control byte + */ + type = (rds_data[2] & 0x07); + block_index = (type <= FM_RDS_BLOCK_C ? type : (type - 1)); + tmpbuf[2] = block_index; /* Offset name */ + tmpbuf[2] |= block_index << 3; /* Received offset */ + + /* Store data byte */ + tmpbuf[0] = rds_data[0]; + tmpbuf[1] = rds_data[1]; + + memcpy(&fmdev->rx.rds.buffer[fmdev->rx.rds.wr_index], &tmpbuf, + FM_RDS_BLOCK_SIZE); + fmdev->rx.rds.wr_index = + (fmdev->rx.rds.wr_index + + FM_RDS_BLOCK_SIZE) % fmdev->rx.rds.buf_size; + + /* Check for overflow & start over */ + if (fmdev->rx.rds.wr_index == fmdev->rx.rds.rd_index) { + pr_debug("(fmdrv): RDS buffer overflow\n"); + fmdev->rx.rds.wr_index = 0; + fmdev->rx.rds.rd_index = 0; + break; + } + rds_len -= FM_RDS_BLOCK_SIZE; + rds_data += FM_RDS_BLOCK_SIZE; + } + spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags); + + /* Wakeup read queue */ + if (fmdev->rx.rds.wr_index != fmdev->rx.rds.rd_index) + wake_up_interruptible(&fmdev->rx.rds.read_queue); + + fmdev->irq_info.stage_index = FM_RDS_FINISH_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_rds_finish(void *arg) +{ + struct fmdrv_ops *fmdev; + + fmdev = arg; + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_HW_TUNE_OP_ENDED_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_tune_op_ended(void *arg) +{ + struct fmdrv_ops *fmdev; + fmdev = arg; + if (fmdev->irq_info.flag & (FM_FR_EVENT | FM_BL_EVENT) & fmdev-> + irq_info.mask) { + pr_debug("(fmdrv): irq: tune ended/bandlimit reached\n"); + if (test_and_clear_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag)) { + fmdev->irq_info.stage_index = FM_AF_JUMP_RD_FREQ_INDEX; + } else { + complete(&fmdev->maintask_completion); + fmdev->irq_info.stage_index = FM_HW_POWER_ENB_INDEX; + } + } else + fmdev->irq_info.stage_index = FM_HW_POWER_ENB_INDEX; + + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_power_enb(void *arg) +{ + struct fmdrv_ops *fmdev; + + fmdev = arg; + if (fmdev->irq_info.flag & FM_POW_ENB_EVENT) { + pr_debug("(fmdrv): irq: Power Enabled/Disabled\n"); + complete(&fmdev->maintask_completion); + } + + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_LOW_RSSI_START_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_low_rssi_start(void *arg) +{ + struct fmdrv_ops *fmdev; + + fmdev = arg; + if ((fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) && + (fmdev->irq_info.flag & FM_LEV_EVENT & fmdev->irq_info.mask) && + (fmdev->rx.curr_freq != FM_UNDEFINED_FREQ) && + (fmdev->rx.cur_station_info.no_of_items_in_afcache != 0)) { + pr_debug("(fmdrv): irq: rssi level has fallen below" + " threshold level\n"); + + /* Disable further low RSSI interrupts */ + fmdev->irq_info.mask &= ~FM_LEV_EVENT; + + fmdev->rx.cur_afjump_index = 0; + fmdev->rx.freq_before_jump = fmdev->rx.curr_freq; + fmdev->irq_info.stage_index = FM_AF_JUMP_SETPI_INDEX; + } else { + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_SEND_INTMSK_CMD_INDEX; + } + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_afjump_set_pi(void *arg) +{ + struct fmdrv_ops *fmdev; + int ret; + unsigned short payload; + + fmdev = arg; + /* Set PI code - must be updated if the AF list is not empty */ + payload = fmdev->rx.cur_station_info.picode; + ret = __fm_send_cmd(fmdev, RDS_PI_SET, REG_WR, &payload, + sizeof(payload), NULL); + if (ret < 0) + pr_err("(fmdrv): irq : failed to set PI," + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = + FM_AF_JUMP_HANDLE_SETPI_RESP_INDEX; + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_handle_set_pi_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_AF_JUMP_SETPI_MASK_INDEX; + + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +/* + * Set PI mask. + * 0xFFFF = Enable PI code matching + * 0x0000 = Disable PI code matching + */ +static void fm_irq_afjump_set_pimask(void *arg) +{ + struct fmdrv_ops *fmdev; + int ret; + unsigned short payload; + + fmdev = arg; + payload = 0x0000; + ret = __fm_send_cmd(fmdev, RDS_PI_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL); + if (ret < 0) + pr_err("(fmdrv): irq: failed to set PI mask, " + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = + FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_INDEX; + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_handle_set_pimask_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_AF_JUMP_SET_AF_FREQ_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_afjump_setfreq(void *arg) +{ + struct fmdrv_ops *fmdev; + unsigned short frq_index; + unsigned short payload; + int ret; + + fmdev = arg; + pr_debug("(fmdrv): Swtiching to %d KHz\n", + fmdev->rx.cur_station_info.af_cache[fmdev->rx.cur_afjump_index]); + frq_index = + (fmdev->rx.cur_station_info.af_cache[fmdev->rx.cur_afjump_index] - + fmdev->rx.region.bottom_frequency) / FM_FREQ_MUL; + + payload = frq_index; + ret = __fm_send_cmd(fmdev, AF_FREQ_SET, REG_WR, &payload, + sizeof(payload), NULL); + if (ret < 0) + pr_err("(fmdrv): irq : failed to set AF freq, " + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = + FM_AF_JUMP_HENDLE_SET_AFFREQ_RESP_INDEX; + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_handle_setfreq_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) { + return; + } else { + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_AF_JUMP_ENABLE_INT_INDEX; + } + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_afjump_enableint(void *arg) +{ + struct fmdrv_ops *fmdev; + unsigned short payload; + int ret; + + fmdev = arg; + /* Enable FR (tuning operation ended) interrupt */ + payload = FM_FR_EVENT; + ret = __fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL); + if (ret) + pr_err("(fmdrv): irq : failed to enable FR interrupt, " + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = FM_AF_JUMP_ENABLE_INT_RESP_INDEX; + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_afjump_enableint_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_AF_JUMP_START_AFJUMP_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_start_afjump(void *arg) +{ + struct fmdrv_ops *fmdev; + unsigned short payload; + int ret; + + fmdev = arg; + payload = FM_TUNER_AF_JUMP_MODE; + ret = __fm_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload, + sizeof(payload), NULL); + if (ret) + pr_err("(fmdrv): irq : failed to start af switch, " + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = + FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_INDEX; + + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_handle_start_afjump_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + fmdev->irq_info.stage_index = FM_SEND_FLAG_GETCMD_INDEX; + set_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag); + clear_bit(FM_INTTASK_RUNNING, &fmdev->flag); +} + +static void fm_irq_afjump_rd_freq(void *arg) +{ + struct fmdrv_ops *fmdev; + unsigned short payload; + int ret; + + fmdev = arg; + ret = __fm_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, + sizeof(payload), NULL); + if (ret < 0) + pr_err("(fmdrv): irq: failed to read cur freq, " + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = FM_AF_JUMP_RD_FREQ_RESP_INDEX; + + /* Start timer to track timeout */ + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_afjump_rd_freq_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + unsigned short read_freq; + unsigned int curr_freq, jumped_freq; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + + /* Skip header info and copy only response data */ + skb_pull(skb, sizeof(struct fm_event_msg_hdr)); + memcpy(&read_freq, skb->data, sizeof(read_freq)); + read_freq = be16_to_cpu(read_freq); + curr_freq = fmdev->rx.region.bottom_frequency + + ((unsigned int)read_freq * FM_FREQ_MUL); + + jumped_freq = + fmdev->rx.cur_station_info.af_cache[fmdev->rx.cur_afjump_index]; + + /* If the frequency was changed the jump succeeded */ + if ((curr_freq != fmdev->rx.freq_before_jump) && + (curr_freq == jumped_freq)) { + pr_debug("(fmdrv): Successfully switched to alternate" + "frequency %d\n", curr_freq); + fmdev->rx.curr_freq = curr_freq; + fm_rx_reset_rds_cache(fmdev); + + /* AF feature is on, enable low level RSSI interrupt */ + if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) + fmdev->irq_info.mask |= FM_LEV_EVENT; + + fmdev->irq_info.stage_index = FM_LOW_RSSI_FINISH_INDEX; + } else { /* jump to the next freq in the AF list */ + fmdev->rx.cur_afjump_index++; + + /* If we reached the end of the list - stop searching */ + if (fmdev->rx.cur_afjump_index >= + fmdev->rx.cur_station_info.no_of_items_in_afcache) { + pr_debug("(fmdrv): AF switch processing failed\n"); + fmdev->irq_info.stage_index = FM_LOW_RSSI_FINISH_INDEX; + } else { /* AF List is not over - try next one */ + + pr_debug("(fmdrv): Trying next freq in AF cache\n"); + fmdev->irq_info.stage_index = FM_AF_JUMP_SETPI_INDEX; + } + } + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_handle_low_rssi_finish(void *arg) +{ + struct fmdrv_ops *fmdev; + + fmdev = arg; + /* Continue next function in interrupt handler table */ + fmdev->irq_info.stage_index = FM_SEND_INTMSK_CMD_INDEX; + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev); +} + +static void fm_irq_send_intmsk_cmd(void *arg) +{ + struct fmdrv_ops *fmdev; + unsigned short payload; + int ret; + + fmdev = arg; + + /* Re-enable FM interrupts */ + payload = fmdev->irq_info.mask; + ret = __fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, + sizeof(payload), NULL); + if (ret) + pr_err("(fmdrv): irq: failed to send int_mask_set cmd, " + "initiating irq recovery process\n"); + else + fmdev->irq_info.stage_index = FM_HANDLE_INTMSK_CMD_RESP_INDEX; + + /* Start timer to track timeout */ + mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies + + FM_DRV_TX_TIMEOUT); +} + +static void fm_irq_handle_intmsk_cmd_resp(void *arg) +{ + struct fmdrv_ops *fmdev; + struct sk_buff *skb; + int ret; + + fmdev = arg; + + ret = __check_cmdresp_status(fmdev, &skb); + if (ret < 0) + return; + /* + * This is last function in interrupt table to be executed. + * So, reset stage index to 0. + */ + fmdev->irq_info.stage_index = FM_SEND_FLAG_GETCMD_INDEX; + + /* Start processing any pending interrupt */ + if (test_and_clear_bit(FM_INTTASK_SCHEDULE_PENDING, &fmdev->flag)) { + fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index] + (fmdev); + } else + clear_bit(FM_INTTASK_RUNNING, &fmdev->flag); +} + +/* Returns availability of RDS data in internel buffer */ +int fmc_is_rds_data_available(struct fmdrv_ops *fmdev, struct file *file, + struct poll_table_struct *pts) +{ + poll_wait(file, &fmdev->rx.rds.read_queue, pts); + if (fmdev->rx.rds.rd_index != fmdev->rx.rds.wr_index) + return 0; + + return -EAGAIN; +} + +/* Copies RDS data from internal buffer to user buffer */ +int fmc_transfer_rds_from_internal_buff(struct fmdrv_ops *fmdev, + struct file *file, + char __user *buf, size_t count) +{ + unsigned int block_count; + unsigned long flags; + int ret; + + if (fmdev->rx.rds.wr_index == fmdev->rx.rds.rd_index) { + if (file->f_flags & O_NONBLOCK) + return -EWOULDBLOCK; + + ret = wait_event_interruptible(fmdev->rx.rds.read_queue, + (fmdev->rx.rds.wr_index != + fmdev->rx.rds.rd_index)); + if (ret) + return -EINTR; + } + + /* Calculate block count from byte count */ + count /= 3; + block_count = 0; + ret = 0; + + spin_lock_irqsave(&fmdev->rds_buff_lock, flags); + + while (block_count < count) { + if (fmdev->rx.rds.wr_index == fmdev->rx.rds.rd_index) + break; + + if (copy_to_user + (buf, &fmdev->rx.rds.buffer[fmdev->rx.rds.rd_index], + FM_RDS_BLOCK_SIZE)) + break; + + fmdev->rx.rds.rd_index += FM_RDS_BLOCK_SIZE; + if (fmdev->rx.rds.rd_index >= fmdev->rx.rds.buf_size) + fmdev->rx.rds.rd_index = 0; + + block_count++; + buf += FM_RDS_BLOCK_SIZE; + ret += FM_RDS_BLOCK_SIZE; + } + spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags); + return ret; +} + +int fmc_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set) +{ + int ret; + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + ret = fm_rx_set_frequency(fmdev, freq_to_set); + break; + + case FM_MODE_TX: + ret = fm_tx_set_frequency(fmdev, freq_to_set); + break; + + default: + ret = -EINVAL; + } + return ret; +} + +int fmc_get_frequency(struct fmdrv_ops *fmdev, unsigned int *cur_tuned_frq) +{ + int ret = 0; + + if (fmdev->rx.curr_freq == FM_UNDEFINED_FREQ) { + pr_err("(fmdrv): RX frequency is not set\n"); + return -EPERM; + } + if (cur_tuned_frq == NULL) { + pr_err("(fmdrv): Invalid memory\n"); + return -ENOMEM; + } + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + *cur_tuned_frq = fmdev->rx.curr_freq; + break; + + case FM_MODE_TX: + *cur_tuned_frq = 0; /* TODO : Change this later */ + break; + + default: + ret = -EINVAL; + } + + return ret; +} + +int fmc_set_region(struct fmdrv_ops *fmdev, unsigned char region_to_set) +{ + int ret; + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + ret = fm_rx_set_region(fmdev, region_to_set); + break; + + case FM_MODE_TX: + ret = fm_tx_set_region(fmdev, region_to_set); + break; + + default: + ret = -EINVAL; + } + return ret; +} + +int fmc_set_mute_mode(struct fmdrv_ops *fmdev, unsigned char mute_mode_toset) +{ + int ret; + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + ret = fm_rx_set_mute_mode(fmdev, mute_mode_toset); + break; + + case FM_MODE_TX: + ret = fm_tx_set_mute_mode(fmdev, mute_mode_toset); + break; + + default: + ret = -EINVAL; + } + return ret; +} + +int fmc_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode) +{ + int ret; + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + ret = fm_rx_set_stereo_mono(fmdev, mode); + break; + + case FM_MODE_TX: + ret = fm_tx_set_stereo_mono(fmdev, mode); + break; + + default: + ret = -EINVAL; + } + return ret; +} + +int fmc_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis) +{ + int ret; + + switch (fmdev->curr_fmmode) { + case FM_MODE_RX: + ret = fm_rx_set_rds_mode(fmdev, rds_en_dis); + break; + + case FM_MODE_TX: + ret = fm_tx_set_rds_mode(fmdev, rds_en_dis); + break; + + default: + ret = -EINVAL; + } + return ret; +} + +/* Sends power off command to the chip */ +static int fm_power_down(struct fmdrv_ops *fmdev) +{ + unsigned short payload; + int ret = 0; + + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + pr_err("(fmdrv): FM core is not ready\n"); + return -EPERM; + } + if (fmdev->curr_fmmode == FM_MODE_OFF) { + pr_debug("(fmdrv): FM chip is already in OFF state\n"); + return ret; + } + + payload = 0x0; + ret = fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + return ret; + + ret = fmc_release(fmdev); + if (ret < 0) + pr_err("(fmdrv): FM CORE release failed\n"); + + return ret; +} + +/* Reads init command from FM firmware file and loads to the chip */ +static int fm_download_firmware(struct fmdrv_ops *fmdev, + const char *firmware_name) +{ + const struct firmware *fw_entry; + struct bts_header *fw_header; + struct bts_action *action; + struct bts_action_delay *delay; + char *fw_data; + int ret, fw_len, cmd_cnt; + + cmd_cnt = 0; + set_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag); + + ret = request_firmware(&fw_entry, firmware_name, + &fmdev->radio_dev->dev); + if (ret < 0) { + pr_err("(fmdrv): Unable to read firmware(%s) content\n", + firmware_name); + return ret; + } + pr_debug("(fmdrv): Firmware(%s) length : %d bytes\n", firmware_name, + fw_entry->size); + + fw_data = (void *)fw_entry->data; + fw_len = fw_entry->size; + + fw_header = (struct bts_header *)fw_data; + if (fw_header->magic != FM_FW_FILE_HEADER_MAGIC) { + pr_err("(fmdrv): %s not a legal TI firmware file\n", + firmware_name); + ret = -EINVAL; + goto rel_fw; + } + pr_debug("(fmdrv): Firmware(%s) magic number : 0x%x\n", firmware_name, + fw_header->magic); + + /* Skip file header info , we already verified it */ + fw_data += sizeof(struct bts_header); + fw_len -= sizeof(struct bts_header); + + while (fw_data && fw_len > 0) { + action = (struct bts_action *)fw_data; + + switch (action->type) { + case ACTION_SEND_COMMAND: /* Send */ + ret = fmc_send_cmd(fmdev, 0, 0, action->data, + action->size, NULL, NULL); + if (ret < 0) + goto rel_fw; + + cmd_cnt++; + break; + + case ACTION_DELAY: /* Delay */ + delay = (struct bts_action_delay *)action->data; + mdelay(delay->msec); + break; + } + + fw_data += (sizeof(struct bts_action) + (action->size)); + fw_len -= (sizeof(struct bts_action) + (action->size)); + } + pr_debug("(fmdrv): Firmare commands(%d) loaded to chip\n", cmd_cnt); +rel_fw: + release_firmware(fw_entry); + clear_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag); + + return ret; +} + +/* Loads default RX configuration to the chip */ +static int __load_default_rx_configuration(struct fmdrv_ops *fmdev) +{ + int ret; + + ret = fm_rx_set_volume(fmdev, FM_DEFAULT_RX_VOLUME); + if (ret < 0) + return ret; + + ret = fm_rx_set_rssi_threshold(fmdev, FM_DEFAULT_RSSI_THRESHOLD); + return ret; +} + +/* Does FM power on sequence */ +static int fm_power_up(struct fmdrv_ops *fmdev, unsigned char fw_option) +{ + unsigned short payload, asic_id, asic_ver; + int resp_len, ret; + char fw_name[50]; + + if (fw_option >= FM_MODE_ENTRY_MAX) { + pr_err("(fmdrv): Invalid firmware download option\n"); + return -EINVAL; + } + + /* + * Initialize FM common module. FM GPIO toggling is + * taken care in Shared Transport driver. + */ + ret = fmc_prepare(fmdev); + if (ret < 0) { + pr_err("(fmdrv): Unable to prepare FM Common\n"); + return ret; + } + + payload = FM_ENABLE; + ret = fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload, + sizeof(payload), NULL, NULL); + if (ret < 0) + goto rel; + + /* Allow the chip to settle down in Channel-8 mode */ + msleep(20); + + ret = fmc_send_cmd(fmdev, ASIC_ID_GET, REG_RD, NULL, + sizeof(asic_id), &asic_id, &resp_len); + if (ret < 0) + goto rel; + + ret = fmc_send_cmd(fmdev, ASIC_VER_GET, REG_RD, NULL, + sizeof(asic_ver), &asic_ver, &resp_len); + if (ret < 0) + goto rel; + + pr_debug("(fmdrv): ASIC ID: 0x%x , ASIC Version: %d\n", + be16_to_cpu(asic_id), be16_to_cpu(asic_ver)); + + sprintf(fw_name, "%s_%x.%d.bts", FM_FMC_FW_FILE_START, + be16_to_cpu(asic_id), be16_to_cpu(asic_ver)); + ret = fm_download_firmware(fmdev, fw_name); + if (ret < 0) { + pr_debug("(fmdrv): Failed to download firmware file %s\n", + fw_name); + goto rel; + } + + sprintf(fw_name, "%s_%x.%d.bts", (fw_option == FM_MODE_RX) ? + FM_RX_FW_FILE_START : FM_TX_FW_FILE_START, + be16_to_cpu(asic_id), be16_to_cpu(asic_ver)); + ret = fm_download_firmware(fmdev, fw_name); + if (ret < 0) { + pr_debug("(fmdrv): Failed to download firmware file %s\n", + fw_name); + goto rel; + } else + return ret; +rel: + fmc_release(fmdev); + + return ret; +} + +/* Set FM Modes(TX, RX, OFF) */ +int fmc_set_mode(struct fmdrv_ops *fmdev, unsigned char fm_mode) +{ + int ret = 0; + + if (fm_mode >= FM_MODE_ENTRY_MAX) { + pr_err("(fmdrv): Invalid FM mode\n"); + return -EINVAL; + } + if (fmdev->curr_fmmode == fm_mode) { + pr_debug("(fmdrv): Already fm is in mode(%d)\n", fm_mode); + return ret; + } + + switch (fm_mode) { + case FM_MODE_OFF: /* OFF Mode */ + ret = fm_power_down(fmdev); + if (ret < 0) { + pr_err("(fmdrv): Failed to set OFF mode\n"); + return ret; + } + break; + + case FM_MODE_TX: /* TX Mode */ + case FM_MODE_RX: /* RX Mode */ + /* Power down before switching to TX or RX mode */ + if (fmdev->curr_fmmode != FM_MODE_OFF) { + ret = fm_power_down(fmdev); + if (ret < 0) { + pr_err("(fmdrv): Failed to set OFF mode\n"); + return ret; + } + msleep(30); + } + ret = fm_power_up(fmdev, fm_mode); + if (ret < 0) { + pr_err("(fmdrv): Failed to load firmware\n"); + return ret; + } + } + fmdev->curr_fmmode = fm_mode; + + /* Set default configuration */ + if (fmdev->curr_fmmode == FM_MODE_RX) { + pr_debug("(fmdrv): Loading default rx configuration..\n"); + ret = __load_default_rx_configuration(fmdev); + if (ret < 0) + pr_err("(fmdrv): Failed to load default values\n"); + } + + return ret; +} + +/* Returns current FM mode (TX, RX, OFF) */ +int fmc_get_mode(struct fmdrv_ops *fmdev, unsigned char *fmmode) +{ + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + pr_err("(fmdrv): FM core is not ready\n"); + return -EPERM; + } + if (fmmode == NULL) { + pr_err("(fmdrv): Invalid memory\n"); + return -ENOMEM; + } + + *fmmode = fmdev->curr_fmmode; + return 0; +} + +/* Called by ST layer when FM packet is available */ +static long fm_st_receive(void *arg, struct sk_buff *skb) +{ + struct fmdrv_ops *fmdev; + + fmdev = (struct fmdrv_ops *)arg; + + if (skb == NULL) { + pr_err("(fmdrv): Invalid SKB received from ST\n"); + return -EFAULT; + } + + if (skb->cb[0] != FM_PKT_LOGICAL_CHAN_NUMBER) { + pr_err("(fmdrv): Received SKB (%p) is not FM Channel 8 pkt\n", + skb); + return -EINVAL; + } + + memcpy(skb_push(skb, 1), &skb->cb[0], 1); + skb_queue_tail(&fmdev->rx_q, skb); + tasklet_schedule(&fmdev->rx_task); + + return 0; +} + +/* + * Called by ST layer to indicate protocol registration completion + * status. + */ +static void fm_st_reg_comp_cb(void *arg, char data) +{ + struct fmdrv_ops *fmdev; + + fmdev = (struct fmdrv_ops *)arg; + fmdev->streg_cbdata = data; + complete(&wait_for_fmdrv_reg_comp); +} + +/* + * This function will be called from FM V4L2 open function. + * Register with ST driver and initialize driver data. + */ +int fmc_prepare(struct fmdrv_ops *fmdev) +{ + static struct st_proto_s fm_st_proto; + unsigned long timeleft; + int ret = 0; + + if (test_bit(FM_CORE_READY, &fmdev->flag)) { + pr_debug("(fmdrv): FM Core is already up\n"); + return ret; + } + + memset(&fm_st_proto, 0, sizeof(fm_st_proto)); + fm_st_proto.type = ST_FM; + fm_st_proto.recv = fm_st_receive; + fm_st_proto.match_packet = NULL; + fm_st_proto.reg_complete_cb = fm_st_reg_comp_cb; + fm_st_proto.write = NULL; /* TI ST driver will fill write pointer */ + fm_st_proto.priv_data = fmdev; + + ret = st_register(&fm_st_proto); + if (ret == -EINPROGRESS) { + init_completion(&wait_for_fmdrv_reg_comp); + fmdev->streg_cbdata = -EINPROGRESS; + pr_debug("(fmdrv): %s waiting for ST reg completion signal\n", + __func__); + + timeleft = + wait_for_completion_timeout(&wait_for_fmdrv_reg_comp, + FM_ST_REGISTER_TIMEOUT); + + if (!timeleft) { + pr_err("(fmdrv): Timeout(%d sec), didn't get reg " + "completion signal from ST\n", + jiffies_to_msecs(FM_ST_REGISTER_TIMEOUT) / 1000); + return -ETIMEDOUT; + } + if (fmdev->streg_cbdata != 0) { + pr_err("(fmdrv): ST reg comp CB called with error " + "status %d\n", fmdev->streg_cbdata); + return -EAGAIN; + } + ret = 0; + } else if (ret == -1) { + pr_err("(fmdrv): st_register failed %d\n", ret); + return -EAGAIN; + } + + if (fm_st_proto.write != NULL) { + g_st_write = fm_st_proto.write; + } else { + pr_err("(fmdrv): Failed to get ST write func pointer\n"); + ret = st_unregister(ST_FM); + if (ret < 0) + pr_err("(fmdrv): st_unregister failed %d\n", ret); + return -EAGAIN; + } + + spin_lock_init(&fmdev->rds_buff_lock); + spin_lock_init(&fmdev->resp_skb_lock); + + /* Initialize TX queue and TX tasklet */ + skb_queue_head_init(&fmdev->tx_q); + tasklet_init(&fmdev->tx_task, __send_tasklet, (unsigned long)fmdev); + + /* Initialize RX Queue and RX tasklet */ + skb_queue_head_init(&fmdev->rx_q); + tasklet_init(&fmdev->rx_task, __recv_tasklet, (unsigned long)fmdev); + + fmdev->irq_info.stage_index = 0; + atomic_set(&fmdev->tx_cnt, 1); + fmdev->response_completion = NULL; + + init_timer(&fmdev->irq_info.int_timeout_timer); + fmdev->irq_info.int_timeout_timer.function = + &__int_timeout_handler; + fmdev->irq_info.int_timeout_timer.data = (unsigned long)fmdev; + fmdev->irq_info.mask = + FM_MAL_EVENT /*| FM_STIC_EVENT <> */ ; + + /* Region info */ + memcpy(&fmdev->rx.region, ®ion_configs[default_radio_region], + sizeof(struct region_info)); + + fmdev->rx.curr_mute_mode = FM_MUTE_OFF; + fmdev->rx.curr_rf_depend_mute = FM_RX_RF_DEPENDENT_MUTE_OFF; + fmdev->rx.rds.flag = FM_RDS_DISABLE; + fmdev->rx.curr_freq = FM_UNDEFINED_FREQ; + fmdev->rx.rds_mode = FM_RDS_SYSTEM_RDS; + fmdev->rx.af_mode = FM_RX_RDS_AF_SWITCH_MODE_OFF; + fmdev->irq_info.irq_service_timeout_retry = 0; + + fm_rx_reset_rds_cache(fmdev); + init_waitqueue_head(&fmdev->rx.rds.read_queue); + + fm_rx_reset_curr_station_info(fmdev); + set_bit(FM_CORE_READY, &fmdev->flag); + + return ret; +} + +/* + * This function will be called from FM V4L2 release function. + * Unregister from ST driver. + */ +int fmc_release(struct fmdrv_ops *fmdev) +{ + int ret; + + if (!test_bit(FM_CORE_READY, &fmdev->flag)) { + pr_debug("(fmdrv): FM Core is already down\n"); + return 0; + } + /* Sevice pending read */ + wake_up_interruptible(&fmdev->rx.rds.read_queue); + + tasklet_kill(&fmdev->tx_task); + tasklet_kill(&fmdev->rx_task); + + skb_queue_purge(&fmdev->tx_q); + skb_queue_purge(&fmdev->rx_q); + + fmdev->response_completion = NULL; + fmdev->rx.curr_freq = 0; + + ret = st_unregister(ST_FM); + if (ret < 0) + pr_err("(fmdrv): Failed to de-register FM from ST %d\n", ret); + else + pr_debug("(fmdrv): Successfully unregistered from ST\n"); + + clear_bit(FM_CORE_READY, &fmdev->flag); + return ret; +} + +/* + * Module init function. Ask FM V4L module to register video device. + * Allocate memory for FM driver context and RX RDS buffer. + */ +static int __init fm_drv_init(void) +{ + struct fmdrv_ops *fmdev = NULL; + int ret = -ENOMEM; + + pr_debug("(fmdrv): FM driver version %s\n", FM_DRV_VERSION); + + fmdev = kzalloc(sizeof(struct fmdrv_ops), GFP_KERNEL); + if (NULL == fmdev) { + pr_err("(fmdrv): Can't allocate operation structure memory\n"); + return ret; + } + fmdev->rx.rds.buf_size = default_rds_buf * FM_RDS_BLOCK_SIZE; + fmdev->rx.rds.buffer = kzalloc(fmdev->rx.rds.buf_size, GFP_KERNEL); + if (NULL == fmdev->rx.rds.buffer) { + pr_err("(fmdrv): Can't allocate rds ring buffer\n"); + goto rel_dev; + } + + ret = fm_v4l2_init_video_device(fmdev, radio_nr); + if (ret < 0) + goto rel_rdsbuf; + + fmdev->irq_info.fm_int_handlers = g_IntHandlerTable; + fmdev->curr_fmmode = FM_MODE_OFF; + fmdev->tx_data.pwr_lvl = FM_PWR_LVL_DEF; + fmdev->tx_data.preemph = FM_TX_PREEMPH_50US; + return ret; + +rel_rdsbuf: + kfree(fmdev->rx.rds.buffer); +rel_dev: + kfree(fmdev); + + return ret; +} + +/* Module exit function. Ask FM V4L module to unregister video device */ +static void __exit fm_drv_exit(void) +{ + struct fmdrv_ops *fmdev = NULL; + + fmdev = fm_v4l2_deinit_video_device(); + if (fmdev != NULL) { + kfree(fmdev->rx.rds.buffer); + kfree(fmdev); + } +} + +module_init(fm_drv_init); +module_exit(fm_drv_exit); + +/* ------------- Module Info ------------- */ +MODULE_AUTHOR("Raja Mani "); +MODULE_DESCRIPTION("FM Driver for Connectivity chip of Texas Instruments. " + FM_DRV_VERSION); +MODULE_VERSION(FM_DRV_VERSION); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/radio/wl128x/fmdrv_common.h b/drivers/media/radio/wl128x/fmdrv_common.h new file mode 100644 index 0000000..d76550d --- /dev/null +++ b/drivers/media/radio/wl128x/fmdrv_common.h @@ -0,0 +1,402 @@ +/* + * FM Driver for Connectivity chip of Texas Instruments. + * FM Common module header file + * + * Copyright (C) 2010 Texas Instruments + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _FMDRV_COMMON_H +#define _FMDRV_COMMON_H + +#define FM_ST_REGISTER_TIMEOUT msecs_to_jiffies(6000) /* 6 sec */ +#define FM_PKT_LOGICAL_CHAN_NUMBER 0x08 /* Logical channel 8 */ + +#define REG_RD 0x1 +#define REG_WR 0x0 + +struct fm_reg_table { + unsigned char opcode; + unsigned char type; + char *name; +}; + +#define STEREO_GET 0 +#define RSSI_LVL_GET 1 +#define IF_COUNT_GET 2 +#define FLAG_GET 3 +#define RDS_SYNC_GET 4 +#define RDS_DATA_GET 5 +#define FREQ_SET 10 +#define AF_FREQ_SET 11 +#define MOST_MODE_SET 12 +#define MOST_BLEND_SET 13 +#define DEMPH_MODE_SET 14 +#define SEARCH_LVL_SET 15 +#define BAND_SET 16 +#define MUTE_STATUS_SET 17 +#define RDS_PAUSE_LVL_SET 18 +#define RDS_PAUSE_DUR_SET 19 +#define RDS_MEM_SET 20 +#define RDS_BLK_B_SET 21 +#define RDS_MSK_B_SET 22 +#define RDS_PI_MASK_SET 23 +#define RDS_PI_SET 24 +#define RDS_SYSTEM_SET 25 +#define INT_MASK_SET 26 +#define SEARCH_DIR_SET 27 +#define VOLUME_SET 28 +#define AUDIO_ENABLE_SET 29 +#define PCM_MODE_SET 30 +#define I2S_MODE_CONFIG_SET 31 +#define POWER_SET 32 +#define INTX_CONFIG_SET 33 +#define PULL_EN_SET 34 +#define HILO_SET 35 +#define SWITCH2FREF 36 +#define FREQ_DRIFT_REPORT 37 + +#define PCE_GET 40 +#define FIRM_VER_GET 41 +#define ASIC_VER_GET 42 +#define ASIC_ID_GET 43 +#define MAN_ID_GET 44 +#define TUNER_MODE_SET 45 +#define STOP_SEARCH 46 +#define RDS_CNTRL_SET 47 + +#define WRITE_HARDWARE_REG 100 +#define CODE_DOWNLOAD 101 +#define RESET 102 + +#define FM_POWER_MODE 254 +#define FM_INTERRUPT 255 + +/* Transmitter API */ + +#define CHANL_SET 55 +#define CHANL_BW_SET 56 +#define REF_SET 57 +#define POWER_ENB_SET 90 +#define POWER_ATT_SET 58 +#define POWER_LEV_SET 59 +#define AUDIO_DEV_SET 60 +#define PILOT_DEV_SET 61 +#define RDS_DEV_SET 62 +#define TX_BAND_SET 65 +#define PUPD_SET 91 +#define AUDIO_IO_SET 63 +#define PREMPH_SET 64 +#define MONO_SET 66 +#define MUTE 92 +#define MPX_LMT_ENABLE 67 +#define PI_SET 93 +#define ECC_SET 69 +#define PTY 70 +#define AF 71 +#define DISPLAY_MODE 74 +#define RDS_REP_SET 77 +#define RDS_CONFIG_DATA_SET 98 +#define RDS_DATA_SET 99 +#define RDS_DATA_ENB 94 +#define TA_SET 78 +#define TP_SET 79 +#define DI_SET 80 +#define MS_SET 81 +#define PS_SCROLL_SPEED 82 +#define TX_AUDIO_LEVEL_TEST 96 +#define TX_AUDIO_LEVEL_TEST_THRESHOLD 73 +#define TX_AUDIO_INPUT_LEVEL_RANGE_SET 54 +#define RX_ANTENNA_SELECT 87 +#define I2C_DEV_ADDR_SET 86 +#define REF_ERR_CALIB_PARAM_SET 88 +#define REF_ERR_CALIB_PERIODICITY_SET 89 +#define SOC_INT_TRIGGER 52 +#define SOC_AUDIO_PATH_SET 83 +#define SOC_PCMI_OVERRIDE 84 +#define SOC_I2S_OVERRIDE 85 +#define RSSI_BLOCK_SCAN_FREQ_SET 95 +#define RSSI_BLOCK_SCAN_START 97 +#define RSSI_BLOCK_SCAN_DATA_GET 5 +#define READ_FMANT_TUNE_VALUE 104 + +/* SKB helpers */ +struct fm_skb_cb { + __u8 fm_opcode; + struct completion *completion; +}; + +#define fm_cb(skb) ((struct fm_skb_cb *)(skb->cb)) + +/* FM Channel-8 command message format */ +struct fm_cmd_msg_hdr { + __u8 header; /* Logical Channel-8 */ + __u8 len; /* Number of bytes follows */ + __u8 fm_opcode; /* FM Opcode */ + __u8 rd_wr; /* Read/Write command */ + __u8 dlen; /* Length of payload */ +} __attribute__ ((packed)); + +#define FM_CMD_MSG_HDR_SIZE 5 /* sizeof(struct fm_cmd_msg_hdr) */ + +/* FM Channel-8 event messgage format */ +struct fm_event_msg_hdr { + __u8 header; /* Logical Channel-8 */ + __u8 len; /* Number of bytes follows */ + __u8 status; /* Event status */ + __u8 num_fm_hci_cmds; /* Number of pkts the host allowed to send */ + __u8 fm_opcode; /* FM Opcode */ + __u8 rd_wr; /* Read/Write command */ + __u8 dlen; /* Length of payload */ +} __attribute__ ((packed)); + +#define FM_EVT_MSG_HDR_SIZE 7 /* sizeof(struct fm_event_msg_hdr) */ + +/* TI's magic number in firmware file */ +#define FM_FW_FILE_HEADER_MAGIC 0x42535442 + +#define FM_ENABLE 1 +#define FM_DISABLE 0 + +/* FLAG_GET register bits */ +#define FM_FR_EVENT (1 << 0) +#define FM_BL_EVENT (1 << 1) +#define FM_RDS_EVENT (1 << 2) +#define FM_BBLK_EVENT (1 << 3) +#define FM_LSYNC_EVENT (1 << 4) +#define FM_LEV_EVENT (1 << 5) +#define FM_IFFR_EVENT (1 << 6) +#define FM_PI_EVENT (1 << 7) +#define FM_PD_EVENT (1 << 8) +#define FM_STIC_EVENT (1 << 9) +#define FM_MAL_EVENT (1 << 10) +#define FM_POW_ENB_EVENT (1 << 11) + +/* + * Firmware files of FM. ASIC ID and ASIC version will be appened to this, + * later. + */ +#define FM_FMC_FW_FILE_START ("fmc_ch8") +#define FM_RX_FW_FILE_START ("fm_rx_ch8") +#define FM_TX_FW_FILE_START ("fm_tx_ch8") + +#define FM_UNDEFINED_FREQ 0xFFFFFFFF + +/* Band types */ +#define FM_BAND_EUROPE_US 0 +#define FM_BAND_JAPAN 1 + +/* Seek directions */ +#define FM_SEARCH_DIRECTION_DOWN 0 +#define FM_SEARCH_DIRECTION_UP 1 + +/* Tunner modes */ +#define FM_TUNER_STOP_SEARCH_MODE 0 +#define FM_TUNER_PRESET_MODE 1 +#define FM_TUNER_AUTONOMOUS_SEARCH_MODE 2 +#define FM_TUNER_AF_JUMP_MODE 3 + +/* Min and Max volume */ +#define FM_RX_VOLUME_MIN 0 +#define FM_RX_VOLUME_MAX 70 + +/* Volume gain step */ +#define FM_RX_VOLUME_GAIN_STEP 0x370 + +/* Mute modes */ +#define FM_MUTE_OFF 0 +#define FM_MUTE_ON 1 +#define FM_MUTE_ATTENUATE 2 + +#define FM_RX_MUTE_UNMUTE_MODE 0x00 +#define FM_RX_MUTE_RF_DEP_MODE 0x01 +#define FM_RX_MUTE_AC_MUTE_MODE 0x02 +#define FM_RX_MUTE_HARD_MUTE_LEFT_MODE 0x04 +#define FM_RX_MUTE_HARD_MUTE_RIGHT_MODE 0x08 +#define FM_RX_MUTE_SOFT_MUTE_FORCE_MODE 0x10 + +/* RF dependent mute mode */ +#define FM_RX_RF_DEPENDENT_MUTE_ON 1 +#define FM_RX_RF_DEPENDENT_MUTE_OFF 0 + +/* RSSI threshold min and max */ +#define FM_RX_RSSI_THRESHOLD_MIN -128 +#define FM_RX_RSSI_THRESHOLD_MAX 127 + +/* Stereo/Mono mode */ +#define FM_STEREO_MODE 0 +#define FM_MONO_MODE 1 +#define FM_STEREO_SOFT_BLEND 1 + +/* FM RX De-emphasis filter modes */ +#define FM_RX_EMPHASIS_FILTER_50_USEC 0 +#define FM_RX_EMPHASIS_FILTER_75_USEC 1 + +/* FM RDS modes */ +#define FM_RDS_DISABLE 0 +#define FM_RDS_ENABLE 1 + +#define FM_NO_PI_CODE 0 + +/* FM and RX RDS block enable/disable */ +#define FM_RX_POWER_SET_FM_ON_RDS_OFF 0x1 +#define FM_RX_POWET_SET_FM_AND_RDS_BLK_ON 0x3 +#define FM_RX_POWET_SET_FM_AND_RDS_BLK_OFF 0x0 + +/* RX RDS */ +#define FM_RX_RDS_FLUSH_FIFO 0x1 +#define FM_RX_RDS_FIFO_THRESHOLD 64 /* tuples */ +#define FM_RDS_BLOCK_SIZE 3 /* 3 bytes */ + +/* RDS block types */ +#define FM_RDS_BLOCK_A 0 +#define FM_RDS_BLOCK_B 1 +#define FM_RDS_BLOCK_C 2 +#define FM_RDS_BLOCK_Ctag 3 +#define FM_RDS_BLOCK_D 4 +#define FM_RDS_BLOCK_E 5 + +#define FM_RDS_BLOCK_INDEX_A 0 +#define FM_RDS_BLOCK_INDEX_B 1 +#define FM_RDS_BLOCK_INDEX_C 2 +#define FM_RDS_BLOCK_INDEX_D 3 +#define FM_RDS_BLOCK_INDEX_UNKNOWN 0xF0 + +#define FM_RDS_STATUS_ERROR_MASK 0x18 + +/* + * Represents an RDS group type & version. + * There are 15 groups, each group has 2 versions: A and B. + */ +#define FM_RDS_GROUP_TYPE_MASK_0A ((unsigned long)1<<0) +#define FM_RDS_GROUP_TYPE_MASK_0B ((unsigned long)1<<1) +#define FM_RDS_GROUP_TYPE_MASK_1A ((unsigned long)1<<2) +#define FM_RDS_GROUP_TYPE_MASK_1B ((unsigned long)1<<3) +#define FM_RDS_GROUP_TYPE_MASK_2A ((unsigned long)1<<4) +#define FM_RDS_GROUP_TYPE_MASK_2B ((unsigned long)1<<5) +#define FM_RDS_GROUP_TYPE_MASK_3A ((unsigned long)1<<6) +#define FM_RDS_GROUP_TYPE_MASK_3B ((unsigned long)1<<7) +#define FM_RDS_GROUP_TYPE_MASK_4A ((unsigned long)1<<8) +#define FM_RDS_GROUP_TYPE_MASK_4B ((unsigned long)1<<9) +#define FM_RDS_GROUP_TYPE_MASK_5A ((unsigned long)1<<10) +#define FM_RDS_GROUP_TYPE_MASK_5B ((unsigned long)1<<11) +#define FM_RDS_GROUP_TYPE_MASK_6A ((unsigned long)1<<12) +#define FM_RDS_GROUP_TYPE_MASK_6B ((unsigned long)1<<13) +#define FM_RDS_GROUP_TYPE_MASK_7A ((unsigned long)1<<14) +#define FM_RDS_GROUP_TYPE_MASK_7B ((unsigned long)1<<15) +#define FM_RDS_GROUP_TYPE_MASK_8A ((unsigned long)1<<16) +#define FM_RDS_GROUP_TYPE_MASK_8B ((unsigned long)1<<17) +#define FM_RDS_GROUP_TYPE_MASK_9A ((unsigned long)1<<18) +#define FM_RDS_GROUP_TYPE_MASK_9B ((unsigned long)1<<19) +#define FM_RDS_GROUP_TYPE_MASK_10A ((unsigned long)1<<20) +#define FM_RDS_GROUP_TYPE_MASK_10B ((unsigned long)1<<21) +#define FM_RDS_GROUP_TYPE_MASK_11A ((unsigned long)1<<22) +#define FM_RDS_GROUP_TYPE_MASK_11B ((unsigned long)1<<23) +#define FM_RDS_GROUP_TYPE_MASK_12A ((unsigned long)1<<24) +#define FM_RDS_GROUP_TYPE_MASK_12B ((unsigned long)1<<25) +#define FM_RDS_GROUP_TYPE_MASK_13A ((unsigned long)1<<26) +#define FM_RDS_GROUP_TYPE_MASK_13B ((unsigned long)1<<27) +#define FM_RDS_GROUP_TYPE_MASK_14A ((unsigned long)1<<28) +#define FM_RDS_GROUP_TYPE_MASK_14B ((unsigned long)1<<29) +#define FM_RDS_GROUP_TYPE_MASK_15A ((unsigned long)1<<30) +#define FM_RDS_GROUP_TYPE_MASK_15B ((unsigned long)1<<31) + +/* RX Alternate Frequency info */ +#define FM_RDS_MIN_AF 1 +#define FM_RDS_MAX_AF 204 +#define FM_RDS_MAX_AF_JAPAN 140 +#define FM_RDS_1_AF_FOLLOWS 225 +#define FM_RDS_25_AF_FOLLOWS 249 + +/* RDS system type (RDS/RBDS) */ +#define FM_RDS_SYSTEM_RDS 0 +#define FM_RDS_SYSTEM_RBDS 1 + +/* AF on/off */ +#define FM_RX_RDS_AF_SWITCH_MODE_ON 1 +#define FM_RX_RDS_AF_SWITCH_MODE_OFF 0 + +/* Retry count when interrupt process goes wrong */ +#define FM_IRQ_TIMEOUT_RETRY_MAX 5 /* 5 times */ + +/* Audio IO set values */ +#define FM_RX_FM_AUDIO_ENABLE_I2S 0x01 +#define FM_RX_FM_AUDIO_ENABLE_ANALOG 0x02 +#define FM_RX_FM_AUDIO_ENABLE_I2S_AND_ANALOG 0x03 +#define FM_RX_FM_AUDIO_ENABLE_DISABLE 0x00 + +/* HI/LO set values */ +#define FM_RX_IFFREQ_TO_HI_SIDE 0x0 +#define FM_RX_IFFREQ_TO_LO_SIDE 0x1 +#define FM_RX_IFFREQ_HILO_AUTOMATIC 0x2 + +/* + * Default RX mode configuration. Chip will be configured + * with this default values after loading RX firmware. + */ +#define FM_DEFAULT_RX_VOLUME 10 +#define FM_DEFAULT_RSSI_THRESHOLD 3 + +/* Range for TX power level in units for dB/uV */ +#define FM_PWR_LVL_LOW 91 +#define FM_PWR_LVL_HIGH 122 + +/* Chip specific default TX power level value */ +#define FM_PWR_LVL_DEF 4 + +/* FM TX Pre-emphasis filter values */ +#define FM_TX_PREEMPH_OFF 1 +#define FM_TX_PREEMPH_50US 0 +#define FM_TX_PREEMPH_75US 2 + +/* FM TX antenna impedence values */ +#define FM_TX_ANT_IMP_50 0 +#define FM_TX_ANT_IMP_200 1 +#define FM_TX_ANT_IMP_500 2 + +/* Functions exported by FM common sub-module */ +int fmc_prepare(struct fmdrv_ops *); +int fmc_release(struct fmdrv_ops *); + +void fmc_update_region_info(struct fmdrv_ops *, unsigned char); +int fmc_send_cmd(struct fmdrv_ops *, unsigned char, unsigned short int, + void *, int, void *, int *); +int fmc_is_rds_data_available(struct fmdrv_ops *, struct file *, + struct poll_table_struct *); +int fmc_transfer_rds_from_internal_buff(struct fmdrv_ops *, struct file *, + char __user *, size_t); + +int fmc_set_frequency(struct fmdrv_ops *, unsigned int); +int fmc_set_mode(struct fmdrv_ops *, unsigned char); +int fmc_set_region(struct fmdrv_ops *, unsigned char); +int fmc_set_mute_mode(struct fmdrv_ops *, unsigned char); +int fmc_set_stereo_mono(struct fmdrv_ops *, unsigned short); +int fmc_set_rds_mode(struct fmdrv_ops *, unsigned char); + +int fmc_get_frequency(struct fmdrv_ops *, unsigned int *); +int fmc_get_region(struct fmdrv_ops *, unsigned char *); +int fmc_get_mode(struct fmdrv_ops *, unsigned char *); + +/* + * channel spacing + */ +#define FM_CHANNEL_SPACING_50KHZ 1 +#define FM_CHANNEL_SPACING_100KHZ 2 +#define FM_CHANNEL_SPACING_200KHZ 4 +#define FM_FREQ_MUL 50 + +#endif +