* [RFC 0/4] FM V4L2 driver for WL128x
@ 2010-08-02 13:13 raja_mani
2010-08-02 13:13 ` [RFC 1/4] drivers:staging:ti-st: sources for FM common interfaces raja_mani
0 siblings, 1 reply; 5+ messages in thread
From: raja_mani @ 2010-08-02 13:13 UTC (permalink / raw)
To: olbpdev, linux-media; +Cc: mchehab, Raja-Mani
From: Raja-Mani <x0102026@ti.com>
The following patches are FM V4L2-Radio drivers for WL128x
(backward compatible for WL127x).
This driver makes use of TI Shared Transport driver for its
transport via UART/TTY.
Only FM Rx is supported as of now. Any FM V4L2 Radio standard application
can make use of the '/dev/radioX' interface exposed by this driver to
communicate with the TI FM chip.
This doesn't include the handling of audio path and has support for
RDS, FM firmware download, HW Seek, Tune, Volume control,etc.
Tested with internal FM app and as well as with open source gnome-radio
application and verified on SDP4430, kernel 2.6.35-rc5.
Note: The patches however are re-based to the Stephen Rothwell's linux-next's
drivers/staging/ti-st since the latest version of ST drivers exist there.
Raja-Mani (4):
drivers:staging:ti-st: sources for FM common interfaces
drivers:staging:ti-st: Sources for FM RX
drivers:staging:ti-st: Sources for FM V4L2 interfaces
drivers:staging:ti-st: Sources for FM common header
drivers/staging/ti-st/fmdrv.h | 225 ++++
drivers/staging/ti-st/fmdrv_common.c | 2127 ++++++++++++++++++++++++++++++++++
drivers/staging/ti-st/fmdrv_common.h | 459 ++++++++
drivers/staging/ti-st/fmdrv_rx.c | 805 +++++++++++++
drivers/staging/ti-st/fmdrv_rx.h | 56 +
drivers/staging/ti-st/fmdrv_v4l2.c | 550 +++++++++
drivers/staging/ti-st/fmdrv_v4l2.h | 32 +
7 files changed, 4254 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv.h
create mode 100644 drivers/staging/ti-st/fmdrv_common.c
create mode 100644 drivers/staging/ti-st/fmdrv_common.h
create mode 100644 drivers/staging/ti-st/fmdrv_rx.c
create mode 100644 drivers/staging/ti-st/fmdrv_rx.h
create mode 100644 drivers/staging/ti-st/fmdrv_v4l2.c
create mode 100644 drivers/staging/ti-st/fmdrv_v4l2.h
^ permalink raw reply [flat|nested] 5+ messages in thread
* [RFC 1/4] drivers:staging:ti-st: sources for FM common interfaces
2010-08-02 13:13 [RFC 0/4] FM V4L2 driver for WL128x raja_mani
@ 2010-08-02 13:13 ` raja_mani
2010-08-02 13:13 ` [RFC 2/4] drivers:staging:ti-st: Sources for FM RX raja_mani
0 siblings, 1 reply; 5+ messages in thread
From: raja_mani @ 2010-08-02 13:13 UTC (permalink / raw)
To: olbpdev, linux-media; +Cc: mchehab, Raja-Mani, Pramodh AG
From: Raja-Mani <x0102026@ti.com>
These are the sources for the common interfaces required by the FM V4L2
driver for WL128x chipsets.
These implement the FM channel-8 protocol communication with the chip.
This makes use of the Shared Transport as its transport.
Signed-off-by: Pramodh AG <pramodh_ag@ti.com>
Signed-off-by: Raja-Mani <x0102026@ti.com>
---
drivers/staging/ti-st/fmdrv_common.c | 2127 ++++++++++++++++++++++++++++++++++
drivers/staging/ti-st/fmdrv_common.h | 459 ++++++++
2 files changed, 2586 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv_common.c
create mode 100644 drivers/staging/ti-st/fmdrv_common.h
diff --git a/drivers/staging/ti-st/fmdrv_common.c b/drivers/staging/ti-st/fmdrv_common.c
new file mode 100644
index 0000000..47e335a
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_common.c
@@ -0,0 +1,2127 @@
+/*
+ * 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
+ *
+ * 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 <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include "fmdrv.h"
+#include "fmdrv_v4l2.h"
+#include "fmdrv_common.h"
+#include "st.h"
+#include "fmdrv_rx.h"
+/* TODO: Enable when FM TX is supported */
+/* #include "fmdrv_tx.h" */
+
+/* FM chip register table */
+static struct fm_reg_table fm_reg_info[] = {
+ /* ----- FM RX registers -------*/
+ /* opcode, type(rd/wr), reg name */
+ {0x00, REG_RD, "STEREO_GET"},
+ {0x01, REG_RD, "RSSI_LVL_GET"},
+ {0x02, REG_RD, "IF_COUNT_GET"},
+ {0x03, REG_RD, "FLAG_GET"},
+ {0x04, REG_RD, "RDS_SYNC_GET"},
+ {0x05, REG_RD, "RDS_DATA_GET"},
+ {0x0a, REG_WR, "FREQ_SET"},
+ {0x0a, REG_RD, "FREQ_GET"},
+ {0x0b, REG_WR, "AF_FREQ_SET"},
+ {0x0b, REG_RD, "AF_FREQ_GET"},
+ {0x0c, REG_WR, "MOST_MODE_SET"},
+ {0x0c, REG_RD, "MOST_MODE_GET"},
+ {0x0d, REG_WR, "MOST_BLEND_SET"},
+ {0x0d, REG_RD, "MOST_BLEND_GET"},
+ {0x0e, REG_WR, "DEMPH_MODE_SET"},
+ {0x0e, REG_RD, "DEMPH_MODE_GET"},
+ {0x0f, REG_WR, "SEARCH_LVL_SET"},
+ {0x0f, REG_RD, "SEARCH_LVL_GET"},
+ {0x10, REG_WR, "RX_BAND_SET"},
+ {0x10, REG_RD, "RX_BAND_GET"},
+ {0x11, REG_WR, "MUTE_STATUS_SET"},
+ {0x11, REG_RD, "MUTE_STATUS_GET"},
+ {0x12, REG_WR, "RDS_PAUSE_LVL_SET"},
+ {0x12, REG_RD, "RDS_PAUSE_LVL_GET"},
+ {0x13, REG_WR, "RDS_PAUSE_DUR_SET"},
+ {0x13, REG_RD, "RDS_PAUSE_DUR_GET"},
+ {0x14, REG_WR, "RDS_MEM_SET"},
+ {0x14, REG_RD, "RDS_MEM_GET"},
+ {0x15, REG_WR, "RDS_BLK_B_SET"},
+ {0x15, REG_RD, "RDS_BLK_B_GET"},
+ {0x16, REG_WR, "RDS_MSK_B_SET"},
+ {0x16, REG_RD, "RDS_MSK_B_GET"},
+ {0x17, REG_WR, "RDS_PI_MASK_SET"},
+ {0x17, REG_RD, "RDS_PI_MASK_GET"},
+ {0x18, REG_WR, "RDS_PI_SET"},
+ {0x18, REG_RD, "RDS_PI_GET"},
+ {0x19, REG_WR, "RDS_SYSTEM_SET"},
+ {0x19, REG_RD, "RDS_SYSTEM_GET"},
+ {0x1a, REG_WR, "INT_MASK_SET"},
+ {0x1a, REG_RD, "INT_MASK_GET"},
+ {0x1b, REG_WR, "SRCH_DIR_SET"},
+ {0x1b, REG_RD, "SRCH_DIR_GET"},
+ {0x1c, REG_WR, "VOLUME_SET"},
+ {0x1c, REG_RD, "VOLUME_GET"},
+ {0x1d, REG_WR, "AUDIO_ENABLE(SET)"},
+ {0x1d, REG_RD, "AUDIO_ENABLE(GET)"},
+ {0x1e, REG_WR, "PCM_MODE_SET"},
+ {0x1e, REG_RD, "PCM_MODE_SET"},
+ {0x1f, REG_WR, "I2S_MD_CFG_SET"},
+ {0x1f, REG_RD, "I2S_MD_CFG_GET"},
+ {0x20, REG_WR, "POWER_SET"},
+ {0x20, REG_RD, "POWER_GET"},
+ {0x21, REG_WR, "INTx_CONFIG_SET"},
+ {0x21, REG_RD, "INTx_CONFIG_GET"},
+ {0x22, REG_WR, "PULL_EN_SET"},
+ {0x22, REG_RD, "PULL_EN_GET"},
+ {0x23, REG_WR, "HILO_SET"},
+ {0x23, REG_RD, "HILO_GET"},
+ {0x24, REG_WR, "SWITCH2FREF"},
+ {0x25, REG_WR, "FREQ_DRIFT_REP"},
+ {0x28, REG_RD, "PCE_GET"},
+ {0x29, REG_RD, "FIRM_VER_GET"},
+ {0x2a, REG_RD, "ASIC_VER_GET"},
+ {0x2b, REG_RD, "ASIC_ID_GET"},
+ {0x2c, REG_RD, "MAIN_ID_GET"},
+ {0x2d, REG_WR, "TUNER_MODE_SET"},
+ {0x2e, REG_WR, "STOP_SEARCH"},
+ {0x2f, REG_WR, "RDS_CNTRL_SET"},
+ {0x64, REG_WR, "WR_HW_REG"},
+ {0x65, REG_WR, "CODE_DOWNLOAD"},
+ {0x66, REG_WR, "RESET"},
+ {0xfe, REG_WR, "FM_POWER_MODE(SET)"},
+ {0xff, REG_RD, "FM_INTERRUPT"},
+
+ /* --- FM TX registers ------ */
+ {0x37, REG_WR, "CHANL_SET"},
+ {0x37, REG_RD, "CHANL_GET"},
+ {0x38, REG_WR, "CHANL_BW_SET"},
+ {0x38, REG_RD, "CHANL_BW_GET"},
+ {0x87, REG_WR, "REF_SET"},
+ {0x87, REG_RD, "REF_GET"},
+ {0x5a, REG_WR, "POWER_ENB_SET"},
+ {0x3a, REG_WR, "POWER_ATT_SET"},
+ {0x3a, REG_RD, "POWER_ATT_GET"},
+ {0x3b, REG_WR, "POWER_LEL_SET"},
+ {0x3b, REG_RD, "POWER_LEL_GET"},
+ {0x3c, REG_WR, "AUDIO_DEV_SET"},
+ {0x3c, REG_RD, "AUDIO_DEV_GET"},
+ {0x3d, REG_WR, "PILOT_DEV_SET"},
+ {0x3d, REG_RD, "PILOT_DEV_GET"},
+ {0x3e, REG_WR, "RDS_DEV_SET"},
+ {0x3e, REG_RD, "RDS_DEV_GET"},
+ {0x5b, REG_WR, "PUPD_SET"},
+ {0x3f, REG_WR, "AUDIO_IO_SET"},
+ {0x40, REG_WR, "PREMPH_SET"},
+ {0x40, REG_RD, "PREMPH_GET"},
+ {0x41, REG_WR, "TX_BAND_SET"},
+ {0x41, REG_RD, "TX_BAND_GET"},
+ {0x42, REG_WR, "MONO_SET"},
+ {0x42, REG_RD, "MONO_GET"},
+ {0x5C, REG_WR, "MUTE"},
+ {0x43, REG_WR, "MPX_LMT_ENABLE"},
+ {0x06, REG_RD, "LOCK_GET"},
+ {0x5d, REG_WR, "REF_ERR_SET"},
+ {0x44, REG_WR, "PI_SET"},
+ {0x44, REG_RD, "PI_GET"},
+ {0x45, REG_WR, "TYPE_SET"},
+ {0x45, REG_RD, "TYPE_GET"},
+ {0x46, REG_WR, "PTY_SET"},
+ {0x46, REG_RD, "PTY_GET"},
+ {0x47, REG_WR, "AF_SET"},
+ {0x47, REG_RD, "AF_GET"},
+ {0x48, REG_WR, "DISPLAY_SIZE_SET"},
+ {0x48, REG_RD, "DISPLAY_SIZE_GET"},
+ {0x49, REG_WR, "RDS_MODE_SET"},
+ {0x49, REG_RD, "RDS_MODE_GET"},
+ {0x4a, REG_WR, "DISPLAY_MODE_SET"},
+ {0x4a, REG_RD, "DISPLAY_MODE_GET"},
+ {0x62, REG_WR, "LENGHT_SET"},
+ {0x4b, REG_RD, "LENGHT_GET"},
+ {0x4c, REG_WR, "TOGGLE_AB_SET"},
+ {0x4c, REG_RD, "TOGGLE_AB_GET"},
+ {0x4d, REG_WR, "RDS_REP_SET"},
+ {0x4d, REG_RD, "RDS_REP_GET"},
+ {0x63, REG_WR, "RDS_DATA_SET"},
+ {0x5e, REG_WR, "RDS_DATA_ENB"},
+ {0x4e, REG_WR, "TA_SET"},
+ {0x4e, REG_RD, "TA_GET"},
+ {0x4f, REG_WR, "TP_SET"},
+ {0x4f, REG_RD, "TP_GET"},
+ {0x50, REG_WR, "DI_SET"},
+ {0x50, REG_RD, "DI_GET"},
+ {0x51, REG_WR, "MS_SET"},
+ {0x51, REG_RD, "MS_GET"},
+ {0x52, REG_WR, "PS_SCROLL_SPEED_SET"},
+ {0x52, REG_RD, "PS_SCROLL_SPEED_GET"},
+};
+
+/* Region info */
+static struct region_info region_configs[] = {
+ /* Europe/US */
+ {
+ .channel_spacing = 50, /* 50 KHz */
+ .bottom_frequency = 87500, /* 87.5 MHz */
+ .top_frequency = 108000, /* 108 MHz */
+ .region_index = 0,
+ },
+ /* Japan */
+ {
+ .channel_spacing = 50, /* 50 KHz */
+ .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",
+ 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_reg_info[FM_INTERRUPT].opcode) {
+ /* 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");
+ 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");
+
+ 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");
+
+ 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", 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");
+ 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");
+
+ 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)", 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 fmreg_index,
+ void *payload, int payload_len,
+ struct completion *wait_completion)
+{
+ struct sk_buff *skb;
+ struct fm_cmd_msg_hdr *cmd_hdr;
+ int size;
+
+
+ if (fmreg_index >= FM_REG_MAX_ENTRIES) {
+ pr_err("(fmdrv): Invalid fm register index");
+ return -EINVAL;
+ }
+ if (test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag) &&
+ payload == NULL) {
+ pr_err("(fmdrv): Payload data is NULL during fw download");
+ 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");
+ 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_reg_info[fmreg_index].opcode;
+ /* read/write type */
+ cmd_hdr->rd_wr = fm_reg_info[fmreg_index].type;
+ cmd_hdr->dlen = payload_len;
+ fm_cb(skb)->fm_opcode = fm_reg_info[fmreg_index].opcode;
+ } 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 fmreg_index,
+ void *payload, int payload_len,
+ struct completion *wait_completion, 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(wait_completion);
+ ret = __fm_send_cmd(fmdev, fmreg_index, payload, payload_len,
+ wait_completion);
+ if (ret < 0)
+ return ret;
+
+ timeleft = wait_for_completion_timeout(wait_completion,
+ FM_DRV_TX_TIMEOUT);
+ if (!timeleft) {
+ pr_err("(fmdrv): Timeout(%d sec),didn't get reg"
+ "completion signal from RX tasklet",
+ jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
+ return -ETIMEDOUT;
+ }
+ if (!fmdev->response_skb) {
+ pr_err("(fmdrv): Reponse SKB is missing ");
+ return -EFAULT;
+ }
+ 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",
+ fm_evt_hdr->status);
+ kfree_skb(skb);
+ return -EIO;
+ }
+ /* 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);
+ return 0;
+}
+
+/* --- 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;
+
+ 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",
+ fm_evt_hdr->fm_opcode);
+ 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_info("(fmdrv): irq: timeout,trying to re-enable fm interrupts");
+ 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");
+ }
+}
+
+/* --------- 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, NULL, sizeof(flag), NULL);
+ if (ret)
+ pr_err("(fmdrv): irq: failed to send flag_get command,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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);
+
+ FM_STORE_BE16_TO_LE16(fmdev->irq_info.flag, fmdev->irq_info.flag);
+ pr_info("(fmdrv): irq: flag register(0x%x)", 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 interrupt received - do nothing");
+
+ /* 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_info("(fmdrv): irq: rds threshold reached");
+ 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, 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");
+ 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_info("(fmdrv): No of expected AF : %d",
+ 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_info("(fmdrv): Current frequency(%d) is \
+ matching with received AF(%d)",
+ 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_info("(fmdrv): AF cache is full");
+ 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_info("(fmdrv): Storing AF %d to AF cache index %d",
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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_info("(fmdrv): Block index:%d(%s) ", 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_info("(fmdrv): Good block received");
+ __fm_rdsparse_swapbytes(fmdev, &rds_format);
+
+ /* Extract PI code and store in local cache.
+ * We need this during AF switch processing */
+ cur_picode =
+ FM_BE16_TO_LE16(rds_format.rdsdata.
+ groupgeneral.pidata);
+ if (fmdev->rx.cur_station_info.picode !=
+ cur_picode)
+ fmdev->rx.cur_station_info.picode =
+ cur_picode;
+ pr_info("(fmdrv): picode:%d", cur_picode);
+
+ group_index =
+ (rds_format.rdsdata.groupgeneral.
+ block_b_byte1 >> 3);
+ pr_info("(fmdrv):Group:%ld%s", 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_info("(fmdrv): Block sequence mismatch");
+ 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_info("(fmdrv): RDS buffer overflow");
+ 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_info("(fmdrv): irq: tune ended/bandlimit reached");
+ 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_info("(fmdrv): irq: Power Enabled/Disabled");
+ 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_info("(fmdrv): irq: rssi level has fallen below" \
+ " threshold level");
+
+ /* 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 = FM_LE16_TO_BE16(fmdev->rx.cur_station_info.picode);
+ ret = __fm_send_cmd(fmdev, RDS_PI_SET, &payload, sizeof(payload),
+ NULL);
+ if (ret < 0)
+ pr_err("(fmdrv): irq : failed to set PI,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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, &payload, sizeof(payload),
+ NULL);
+ if (ret < 0)
+ pr_err("(fmdrv): irq: failed to set PI mask,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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_info("(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) /
+ fmdev->rx.region.channel_spacing;
+
+ FM_STORE_LE16_TO_BE16(payload, frq_index);
+ ret = __fm_send_cmd(fmdev, AF_FREQ_SET, &payload, sizeof(payload),
+ NULL);
+ if (ret < 0)
+ pr_err("(fmdrv): irq : failed to set AF freq,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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_LE16_TO_BE16(FM_FR_EVENT);
+ ret = __fm_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ NULL);
+ if (ret)
+ pr_err("(fmdrv): irq : failed to enable FR interrupt,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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;
+ FM_STORE_LE16_TO_BE16(payload, FM_TUNER_AF_JUMP_MODE);
+ ret = __fm_send_cmd(fmdev, TUNER_MODE_SET, &payload, sizeof(payload),
+ NULL);
+ if (ret)
+ pr_err("(fmdrv): irq : failed to start af switch,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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_GET, NULL, sizeof(payload), NULL);
+ if (ret < 0)
+ pr_err("(fmdrv): irq: failed to read cur freq,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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 = FM_BE16_TO_LE16(read_freq);
+ curr_freq = fmdev->rx.region.bottom_frequency +
+ ((unsigned int)read_freq * fmdev->rx.region.channel_spacing);
+
+ 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_info("(fmdrv): Successfully switched to alternate" \
+ "frequency %d", 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_info("(fmdrv): AF switch processing failed");
+ fmdev->irq_info.stage_index = FM_LOW_RSSI_FINISH_INDEX;
+ } else { /* AF List is not over - try next one */
+
+ pr_info("(fmdrv): Trying next frequency in af cache");
+ 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 */
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = __fm_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ NULL);
+ if (ret)
+ pr_err("(fmdrv): irq: failed to send int_mask_set cmd,"
+ "initiating irq recovery process");
+ 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;
+ del_timer(&fmdev->irq_info.int_timeout_timer);
+
+ ret = __check_cmdresp_status(fmdev, &skb);
+ if (ret < 0) {
+ pr_err("(fmdrv): Initiating irq recovery process");
+ mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+ FM_DRV_TX_TIMEOUT);
+ 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:
+ /* TODO: Enable when FM TX is supported */
+ /* 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");
+ ret = -EPERM;
+ goto exit;
+ }
+ if (cur_tuned_frq == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ 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;
+ }
+exit:
+ return ret;
+}
+
+/* Returns current band index (0-Europe/US; 1-Japan) */
+int fmc_get_region(struct fmdrv_ops *fmdev, unsigned char *region)
+{
+ *region = fmdev->rx.region.region_index;
+ return 0;
+}
+
+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:
+ /* TODO: Enable when FM TX is supported */
+ /* 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:
+ /* TODO: Enable when FM TX is supported */
+ /* 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:
+ /* TODO: Enable when FM TX is supported */
+ /* 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:
+ /* TODO: Enable when FM TX is supported */
+ /* 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");
+ ret = -EPERM;
+ goto exit;
+ }
+ if (fmdev->curr_fmmode == FM_MODE_OFF) {
+ pr_err("(fmdrv): FM chip is already in OFF state");
+ goto exit;
+ }
+
+ FM_STORE_LE16_TO_BE16(payload, 0x0);
+ ret = fmc_send_cmd(fmdev, FM_POWER_MODE, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ ret = fmc_release(fmdev);
+ if (ret < 0)
+ pr_err("(fmdrv): FM CORE release failed");
+
+exit:
+ 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);
+ goto exit;
+ }
+ pr_info("(fmdrv): Firmware(%s) length : %d bytes", 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",
+ firmware_name);
+ ret = -EINVAL;
+ goto rel_fw;
+ }
+ pr_info("(fmdrv): Firmware(%s) magic number : 0x%x", 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, action->data,
+ action->size, &fmdev->maintask_completion,
+ 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_info("(fmdrv): Firmare commands(%d) loaded to the chip", cmd_cnt);
+rel_fw:
+ release_firmware(fw_entry);
+ clear_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag);
+exit:
+ 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");
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ /* 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");
+ goto exit;
+ }
+
+ FM_STORE_LE16_TO_BE16(payload, FM_ENABLE);
+ ret = fmc_send_cmd(fmdev, FM_POWER_MODE, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed enable FM over Channel 8");
+ goto rel;
+ }
+
+ /* Allow the chip to settle down in Channel-8 mode */
+ msleep(5);
+
+ ret = fmc_send_cmd(fmdev, ASIC_ID_GET, NULL, sizeof(asic_id),
+ &fmdev->maintask_completion, &asic_id,
+ &resp_len);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed read FM chip ASIC ID");
+ goto rel;
+ }
+ ret = fmc_send_cmd(fmdev, ASIC_VER_GET, NULL, sizeof(asic_ver),
+ &fmdev->maintask_completion, &asic_ver,
+ &resp_len);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed read FM chip ASIC Version");
+ goto rel;
+ }
+
+ pr_info("(fmdrv): ASIC ID: 0x%x , ASIC Version: %d",
+ FM_BE16_TO_LE16(asic_id), FM_BE16_TO_LE16(asic_ver));
+
+ sprintf(fw_name, "%s_%x.%d.bts", FM_FMC_FW_FILE_START,
+ FM_BE16_TO_LE16(asic_id), FM_BE16_TO_LE16(asic_ver));
+ ret = fm_download_firmware(fmdev, fw_name);
+ if (ret < 0) {
+ pr_info("(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,
+ FM_BE16_TO_LE16(asic_id), FM_BE16_TO_LE16(asic_ver));
+ ret = fm_download_firmware(fmdev, fw_name);
+ if (ret < 0) {
+ pr_info("(fmdrv): Failed to download firmware file %s\n",
+ fw_name);
+ goto rel;
+ } else
+ goto exit;
+rel:
+ fmc_release(fmdev);
+exit:
+ 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");
+ ret = -EINVAL;
+ goto exit;
+ }
+ if (fmdev->curr_fmmode == fm_mode) {
+ pr_info("(fmdrv): Already fm is in mode(%d)", fm_mode);
+ goto exit;
+ }
+
+ 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");
+ goto exit;
+ }
+ 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");
+ goto exit;
+ }
+ msleep(30);
+ }
+ ret = fm_power_up(fmdev, fm_mode);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to load firmware\n");
+ goto exit;
+ }
+ }
+ fmdev->curr_fmmode = fm_mode;
+
+ /* Set default configuration */
+ if (fmdev->curr_fmmode == FM_MODE_RX) {
+ pr_info("(fmdrv): Loading default rx configuration..\n");
+ ret = __load_default_rx_configuration(fmdev);
+ if (ret < 0)
+ pr_err("(fmdrv): Failed to load default values\n");
+ }
+exit:
+ 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");
+ return -EPERM;
+ }
+ if (fmmode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ 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");
+ return -EFAULT;
+ }
+
+ if (skb->cb[0] != FM_PKT_LOGICAL_CHAN_NUMBER) {
+ pr_err("(fmdrv): Received SKB (%p) is not FM Channel 8 pkt",
+ 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_info("(fmdrv): FM Core is already up");
+ goto exit;
+ }
+
+ 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_info("(fmdrv): %s waiting for ST reg completion signal",
+ __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",
+ jiffies_to_msecs(FM_ST_REGISTER_TIMEOUT) /
+ 1000);
+ ret = -ETIMEDOUT;
+ goto exit;
+ }
+ if (fmdev->streg_cbdata != 0) {
+ pr_err("(fmdrv): ST reg comp CB called with error"
+ "status %d", fmdev->streg_cbdata);
+ ret = -EAGAIN;
+ goto exit;
+ }
+ ret = 0;
+ } else if (ret == -1) {
+ pr_err("(fmdrv): st_register failed %d", ret);
+ ret = -EAGAIN;
+ goto exit;
+ }
+
+ if (fm_st_proto.write != NULL) {
+ g_st_write = fm_st_proto.write;
+ } else {
+ pr_err("(fmdrv): Failed to get ST write func pointer");
+ ret = st_unregister(ST_FM);
+ if (ret < 0)
+ pr_err("(fmdrv): st_unregister failed %d", ret);
+ ret = -EAGAIN;
+ goto exit;
+ }
+
+ 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 <<Enable this later>> */ ;
+
+ /* 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);
+exit:
+ 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_info("(fmdrv): FM Core is already down");
+ 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", ret);
+ else
+ pr_info("(fmdrv): Successfully unregistered from ST");
+
+ 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_info("(fmdrv): FM driver version %s", FM_DRV_VERSION);
+
+ fmdev = kzalloc(sizeof(struct fmdrv_ops), GFP_KERNEL);
+ if (NULL == fmdev) {
+ pr_err("(fmdrv): Can't allocate operation structure memory");
+ goto exit;
+ }
+ 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");
+ 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;
+ goto exit;
+
+rel_rdsbuf:
+ kfree(fmdev->rx.rds.buffer);
+rel_dev:
+ kfree(fmdev);
+exit:
+ 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 <raja_mani@ti.com>");
+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/staging/ti-st/fmdrv_common.h b/drivers/staging/ti-st/fmdrv_common.h
new file mode 100644
index 0000000..7fb55f3
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_common.h
@@ -0,0 +1,459 @@
+/*
+ * 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;
+};
+
+/* FM register index */
+enum fm_reg_index {
+ /* FM RX registers */
+ STEREO_GET,
+ RSSI_LVL_GET,
+ IF_COUNT_GET,
+ FLAG_GET,
+ RDS_SYNC_GET,
+ RDS_DATA_GET,
+ FREQ_SET,
+ FREQ_GET,
+ AF_FREQ_SET,
+ AF_FREQ_GET,
+ MOST_MODE_SET,
+ MOST_MODE_GET,
+ MOST_BLEND_SET,
+ MOST_BLEND_GET,
+ DEMPH_MODE_SET,
+ DEMPH_MODE_GET,
+ SEARCH_LVL_SET,
+ SEARCH_LVL_GET,
+ RX_BAND_SET,
+ RX_BAND_GET,
+ MUTE_STATUS_SET,
+ MUTE_STATUS_GET,
+ RDS_PAUSE_LVL_SET,
+ RDS_PAUSE_LVL_GET,
+ RDS_PAUSE_DUR_SET,
+ RDS_PAUSE_DUR_GET,
+ RDS_MEM_SET,
+ RDS_MEM_GET,
+ RDS_BLK_B_SET,
+ RDS_BLK_B_GET,
+ RDS_MSK_B_SET,
+ RDS_MSK_B_GET,
+ RDS_PI_MASK_SET,
+ RDS_PI_MASK_GET,
+ RDS_PI_SET,
+ RDS_PI_GET,
+ RDS_SYSTEM_SET,
+ RDS_SYSTEM_GET,
+ INT_MASK_SET,
+ INT_MASK_GET,
+ SEARCH_DIR_SET,
+ SEARCH_DIR_GET,
+ VOLUME_SET,
+ VOLUME_GET,
+ AUDIO_ENABLE_SET,
+ AUDIO_ENABLE_GET,
+ PCM_MODE_SET,
+ PCM_MODE_GET,
+ I2S_MODE_CONFIG_SET,
+ I2S_MODE_CONFIG_GET,
+ POWER_SET,
+ POWER_GET,
+ INTx_CONFIG_SET,
+ INTx_CONFIG_GET,
+ PULL_EN_SET,
+ PULL_EN_GET,
+ HILO_SET,
+ HILO_GET,
+ SWITCH2FREF,
+ FREQ_DRIFT_REPORT,
+ PCE_GET,
+ FIRM_VER_GET,
+ ASIC_VER_GET,
+ ASIC_ID_GET,
+ MAIN_ID_GET,
+ TUNER_MODE_SET,
+ STOP_SEARCH,
+ RDS_CNTRL_SET,
+ WRITE_HARDWARE_REG,
+ CODE_DOWNLOAD,
+ RESET,
+ FM_POWER_MODE,
+ FM_INTERRUPT,
+
+ /* FM TX registers */
+ CHANL_SET,
+ CHANL_GET,
+ CHANL_BW_SET,
+ CHANL_BW_GET,
+ REF_SET,
+ REF_GET,
+ POWER_ENB_SET,
+ POWER_ATT_SET,
+ POWER_ATT_GET,
+ POWER_LEL_SET,
+ POWER_LEL_GET,
+ AUDIO_DEV_SET,
+ AUDIO_DEV_GET,
+ PILOT_DEV_SET,
+ PILOT_DEV_GET,
+ RDS_DEV_SET,
+ RDS_DEV_GET,
+ PUPD_SET,
+ AUDIO_IO_SET,
+ PREMPH_SET,
+ PREMPH_GET,
+ TX_BAND_SET,
+ TX_BAND_GET,
+ MONO_SET,
+ MONO_GET,
+ MUTE,
+ MPX_LMT_ENABLE,
+ LOCK_GET,
+ REF_ERR_SET,
+ PI_SET,
+ PI_GET,
+ TYPE_SET,
+ TYPE_GET,
+ PTY_SET,
+ PTY_GET,
+ AF_SET,
+ AF_GET,
+ DISPLAY_SIZE_SET,
+ DISPLAY_SIZE_GET,
+ RDS_MODE_SET,
+ RDS_MODE_GET,
+ DISPLAY_MODE_SET,
+ DISPLAY_MODE_GET,
+ LENGHT_SET,
+ LENGHT_GET,
+ TOGGLE_AB_SET,
+ TOGGLE_AB_GET,
+ RDS_REP_SET,
+ RDS_REP_GET,
+ RDS_DATA_SET,
+ RDS_DATA_ENB,
+ TA_SET,
+ TA_GET,
+ TP_SET,
+ TP_GET,
+ DI_SET,
+ DI_GET,
+ MS_SET,
+ MS_GET,
+ PS_SCROLL_SPEED_SET,
+ PS_SCROLL_SPEED_GET,
+
+ FM_REG_MAX_ENTRIES
+};
+
+/* 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
+
+/* Firmware header */
+struct bts_header {
+ uint32_t magic;
+ uint32_t version;
+ uint8_t future[24];
+ uint8_t actions[0];
+} __attribute__ ((packed));
+
+/* Firmware action */
+struct bts_action {
+ uint16_t type;
+ uint16_t size;
+ uint8_t data[0];
+} __attribute__ ((packed));
+
+/* Firmware delay */
+struct bts_action_delay {
+ uint32_t msec;
+} __attribute__ ((packed));
+
+#define ACTION_SEND_COMMAND 1
+#define ACTION_WAIT_EVENT 2
+#define ACTION_SERIAL 3
+#define ACTION_DELAY 4
+#define ACTION_REMARKS 6
+
+/* Converts little endian to big endian */
+#define FM_STORE_LE16_TO_BE16(data, value) \
+ (data = ((value >> 8) | ((value & 0xFF) << 8)))
+#define FM_LE16_TO_BE16(value) (((value >> 8) | ((value & 0xFF) << 8)))
+
+/* Converts big endian to little endian */
+#define FM_STORE_BE16_TO_LE16(data, value) \
+ (data = ((value & 0xFF) << 8) | ((value >> 8)))
+#define FM_BE16_TO_LE16(value) (((value & 0xFF) << 8) | ((value >> 8)))
+
+#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 the 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_CHECK_SEND_CMD_STATUS(ret) \
+ if (ret < 0) {\
+ return ret;\
+ }
+#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_ON 0
+#define FM_MUTE_OFF 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
+
+/* 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, void *, int,
+ struct completion *, 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 *);
+
+#endif
+
--
1.5.6.3
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [RFC 2/4] drivers:staging:ti-st: Sources for FM RX
2010-08-02 13:13 ` [RFC 1/4] drivers:staging:ti-st: sources for FM common interfaces raja_mani
@ 2010-08-02 13:13 ` raja_mani
2010-08-02 13:13 ` [RFC 3/4] drivers:staging:ti-st: Sources for FM V4L2 interfaces raja_mani
0 siblings, 1 reply; 5+ messages in thread
From: raja_mani @ 2010-08-02 13:13 UTC (permalink / raw)
To: olbpdev, linux-media; +Cc: mchehab, Raja-Mani, Pramodh AG
From: Raja-Mani <x0102026@ti.com>
This has implementation for FM RX functionality.
It communicates with FM V4l2 module and FM common module.
Signed-off-by: Pramodh AG <pramodh_ag@ti.com>
Signed-off-by: Raja-Mani <x0102026@ti.com>
---
drivers/staging/ti-st/fmdrv_rx.c | 805 ++++++++++++++++++++++++++++++++++++++
drivers/staging/ti-st/fmdrv_rx.h | 56 +++
2 files changed, 861 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv_rx.c
create mode 100644 drivers/staging/ti-st/fmdrv_rx.h
diff --git a/drivers/staging/ti-st/fmdrv_rx.c b/drivers/staging/ti-st/fmdrv_rx.c
new file mode 100644
index 0000000..8d5b9e9
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_rx.c
@@ -0,0 +1,805 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ * This sub-module of FM driver implements FM RX functionality.
+ *
+ * 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
+ *
+ */
+
+#include "fmdrv.h"
+#include "fmdrv_common.h"
+#include "fmdrv_rx.h"
+
+void fm_rx_reset_rds_cache(struct fmdrv_ops *fmdev)
+{
+ fmdev->rx.rds.flag = FM_RDS_DISABLE;
+ fmdev->rx.rds.last_block_index = 0;
+ fmdev->rx.rds.wr_index = 0;
+ fmdev->rx.rds.rd_index = 0;
+
+ if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
+ fmdev->irq_info.mask |= FM_LEV_EVENT;
+
+}
+
+void fm_rx_reset_curr_station_info(struct fmdrv_ops *fmdev)
+{
+ fmdev->rx.cur_station_info.picode = FM_NO_PI_CODE;
+ fmdev->rx.cur_station_info.no_of_items_in_afcache = 0;
+ fmdev->rx.cur_station_info.af_list_max = 0;
+}
+
+int fm_rx_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set)
+{
+ unsigned long timeleft;
+ unsigned short payload, curr_frq, frq_index;
+ unsigned int curr_frq_in_khz;
+ int ret, resp_len;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX) {
+ ret = -EPERM;
+ goto exit;
+ }
+
+ if (freq_to_set < fmdev->rx.region.bottom_frequency ||
+ freq_to_set > fmdev->rx.region.top_frequency) {
+ pr_err("(fmdrv): Invalid frequency %d", freq_to_set);
+ ret = -EINVAL;
+ goto exit;
+ }
+ /* Set audio enable */
+ FM_STORE_LE16_TO_BE16(payload, FM_RX_FM_AUDIO_ENABLE_I2S_AND_ANALOG);
+ ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Set hilo to automatic selection */
+ FM_STORE_LE16_TO_BE16(payload, FM_RX_IFFREQ_HILO_AUTOMATIC);
+ ret = fmc_send_cmd(fmdev, HILO_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Calculate frequency index to write */
+ frq_index = (freq_to_set - fmdev->rx.region.bottom_frequency) /
+ fmdev->rx.region.channel_spacing;
+
+ /* Set frequency index */
+ FM_STORE_LE16_TO_BE16(payload, frq_index);
+ ret = fmc_send_cmd(fmdev, FREQ_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Read flags - just to clear any pending interrupts if we had */
+ ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2,
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Enable FR, BL interrupts */
+ fmdev->irq_info.mask |= (FM_FR_EVENT | FM_BL_EVENT);
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Start tune */
+ FM_STORE_LE16_TO_BE16(payload, FM_TUNER_PRESET_MODE);
+ ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Wait for tune ended interrupt */
+ init_completion(&fmdev->maintask_completion);
+ timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+ FM_DRV_TX_TIMEOUT);
+ if (!timeleft) {
+ pr_err("(fmdrv): Timeout(%d sec),didn't get tune ended int",
+ jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
+ ret = -ETIMEDOUT;
+ goto exit;
+ }
+
+ /* Read freq back to confirm */
+ ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_frq, &resp_len);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ curr_frq = FM_BE16_TO_LE16(curr_frq);
+ curr_frq_in_khz = (fmdev->rx.region.bottom_frequency
+ + ((unsigned int)curr_frq * fmdev->rx.region.channel_spacing));
+
+ /* Re-enable default FM interrupts */
+ fmdev->irq_info.mask &= ~(FM_FR_EVENT | FM_BL_EVENT);
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ if (curr_frq_in_khz != freq_to_set) {
+ pr_err("(fmdrv): Current chip frequency(%d) is not matching"
+ " with requested frequency(%d)", curr_frq_in_khz,
+ freq_to_set);
+ ret = -EAGAIN;
+ goto exit;
+ }
+
+ /* Update local cache */
+ fmdev->rx.curr_freq = curr_frq_in_khz;
+
+ /* Reset RDS cache and current station pointers */
+ fm_rx_reset_rds_cache(fmdev);
+ fm_rx_reset_curr_station_info(fmdev);
+
+ /* Do we need to reset anything else? */
+exit:
+ return ret;
+}
+
+int fm_rx_seek(struct fmdrv_ops *fmdev, unsigned int seek_upward,
+ unsigned int wrap_around)
+{
+ int resp_len;
+ unsigned short curr_frq, next_frq, last_frq;
+ unsigned short payload, int_reason;
+ char offset;
+ unsigned long timeleft;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX) {
+ ret = -EPERM;
+ goto exit;
+ }
+
+ /* Read the current frequency from chip */
+ ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, sizeof(curr_frq),
+ &fmdev->maintask_completion, &curr_frq, &resp_len);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ curr_frq = FM_BE16_TO_LE16(curr_frq);
+
+ last_frq =
+ (fmdev->rx.region.top_frequency - fmdev->rx.region.bottom_frequency)
+ / fmdev->rx.region.channel_spacing;
+
+ /* Check the offset in order to be aligned to the 100KHz steps */
+ offset = curr_frq % 2;
+
+ next_frq = seek_upward ? curr_frq + 2 /* Seek Up */ :
+ curr_frq - 2 /* Seek Down */ ;
+
+ /* Add or subtract offset (0/1) in order
+ * to stay aligned to the 100KHz steps
+ */
+ if ((short)next_frq < 0)
+ next_frq = last_frq - offset;
+ else if (next_frq > last_frq)
+ next_frq = 0 + offset;
+
+ /* Set calculated next frequency to perform seek */
+ FM_STORE_LE16_TO_BE16(payload, next_frq);
+ ret = fmc_send_cmd(fmdev, FREQ_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Set search direction (0:Seek Down, 1:Seek Up) */
+ FM_STORE_LE16_TO_BE16(payload, (seek_upward ? FM_SEARCH_DIRECTION_UP :
+ FM_SEARCH_DIRECTION_DOWN));
+ ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Read flags - just to clear any pending interrupts if we had */
+ ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2,
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Enable FR, BL interrupts */
+ fmdev->irq_info.mask |= (FM_FR_EVENT | FM_BL_EVENT);
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Start seek */
+ FM_STORE_LE16_TO_BE16(payload, FM_TUNER_AUTONOMOUS_SEARCH_MODE);
+ ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Wait for tune ended/band limit reached interrupt */
+ init_completion(&fmdev->maintask_completion);
+ timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+ FM_DRV_RX_SEEK_TIMEOUT);
+ if (!timeleft) {
+ pr_err("(fmdrv): Timeout(%d sec),didn't get tune ended int",
+ jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
+ ret = -ETIMEDOUT;
+ goto exit;
+ }
+ int_reason = fmdev->irq_info.flag & 0x3;
+
+ /* Re-enable default FM interrupts */
+ fmdev->irq_info.mask &= ~(FM_FR_EVENT | FM_BL_EVENT);
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Read freq to know where operation tune operation stopped */
+ ret = fmc_send_cmd(fmdev, FREQ_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_frq, &resp_len);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ curr_frq = FM_BE16_TO_LE16(curr_frq);
+ fmdev->rx.curr_freq = (fmdev->rx.region.bottom_frequency +
+ ((unsigned int)curr_frq *
+ fmdev->rx.region.channel_spacing));
+
+ /* Reset RDS cache and current station pointers */
+ fm_rx_reset_rds_cache(fmdev);
+ fm_rx_reset_curr_station_info(fmdev);
+
+ /* Return error if band limit is reached */
+ if (int_reason & FM_BL_EVENT) {
+ pr_info("(fmdrv): band limit reached\n");
+ ret = -EAGAIN;
+ }
+exit:
+ return ret;
+}
+
+int fm_rx_set_volume(struct fmdrv_ops *fmdev, unsigned short vol_to_set)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (vol_to_set > FM_RX_VOLUME_MAX) {
+ pr_err("(fmdrv): Volume is not within(%d-%d) range",
+ FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX);
+ return -EINVAL;
+ }
+ vol_to_set *= FM_RX_VOLUME_GAIN_STEP;
+
+ FM_STORE_LE16_TO_BE16(payload, vol_to_set);
+ ret = fmc_send_cmd(fmdev, VOLUME_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ fmdev->rx.curr_volume = vol_to_set;
+ return ret;
+}
+
+/* Get volume */
+int fm_rx_get_volume(struct fmdrv_ops *fmdev, unsigned short *curr_vol)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (curr_vol == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *curr_vol = fmdev->rx.curr_volume / FM_RX_VOLUME_GAIN_STEP;
+ return 0;
+}
+
+/* To get current band's bottom and top frequency */
+int fm_rx_get_currband_lowhigh_freq(struct fmdrv_ops *fmdev,
+ unsigned int *bottom_frequency,
+ unsigned int *top_frequency)
+{
+ if (bottom_frequency != NULL)
+ *bottom_frequency = fmdev->rx.region.bottom_frequency;
+
+ if (top_frequency != NULL)
+ *top_frequency = fmdev->rx.region.top_frequency;
+
+ return 0;
+}
+
+/* Sets band (0-Europe/US; 1-Japan) */
+int fm_rx_set_region(struct fmdrv_ops *fmdev,
+ unsigned char region_to_set)
+{
+ unsigned short payload;
+ unsigned int new_frq;
+ int ret = -EPERM;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ goto exit;
+
+ if (region_to_set != FM_BAND_EUROPE_US &&
+ region_to_set != FM_BAND_JAPAN) {
+ pr_err("(fmdrv): Invalid band\n");
+ ret = -EINVAL;
+ goto exit;
+ }
+ if (fmdev->rx.region.region_index == region_to_set) {
+ pr_err("(fmdrv): Requested band is already configured\n");
+ goto exit;
+ }
+ /* Send cmd to set the band */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)region_to_set);
+ ret = fmc_send_cmd(fmdev, RX_BAND_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ fmc_update_region_info(fmdev, region_to_set);
+
+ /* Check whether current RX frequency is within band boundary */
+ if (fmdev->curr_fmmode == FM_MODE_RX) {
+ new_frq = 0;
+ if (fmdev->rx.curr_freq < fmdev->rx.region.bottom_frequency)
+ new_frq = fmdev->rx.region.bottom_frequency;
+ else if (fmdev->rx.curr_freq > fmdev->rx.region.top_frequency)
+ new_frq = fmdev->rx.region.top_frequency;
+
+ if (new_frq) {
+ pr_info("(fmdrv): "
+ "Current freq is not within band limit boundary,"
+ "switching to %d KHz", new_frq);
+ /* Current RX frequency is not
+ * within boundary. So, update it
+ */
+ ret = fm_rx_set_frequency(fmdev, new_frq);
+ }
+ }
+exit:
+ return ret;
+}
+
+/* Reads current mute mode (Mute Off/On/Attenuate)*/
+int fm_rx_get_mute_mode(struct fmdrv_ops *fmdev,
+ unsigned char *curr_mute_mode)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (curr_mute_mode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *curr_mute_mode = fmdev->rx.curr_mute_mode;
+ return 0;
+}
+
+static int __fm_config_rx_mute_reg(struct fmdrv_ops *fmdev)
+{
+ unsigned short payload, muteval;
+ int ret;
+
+ muteval = 0;
+ switch (fmdev->rx.curr_mute_mode) {
+ case FM_MUTE_ON:
+ muteval = FM_RX_MUTE_AC_MUTE_MODE;
+ break;
+ case FM_MUTE_OFF:
+ muteval = FM_RX_MUTE_UNMUTE_MODE;
+ break;
+ case FM_MUTE_ATTENUATE:
+ muteval = FM_RX_MUTE_SOFT_MUTE_FORCE_MODE;
+ break;
+ }
+ if (fmdev->rx.curr_rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON)
+ muteval |= FM_RX_MUTE_RF_DEP_MODE;
+ else
+ muteval &= ~FM_RX_MUTE_RF_DEP_MODE;
+
+ FM_STORE_LE16_TO_BE16(payload, muteval);
+ ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+ return 0;
+}
+
+/* Configures mute mode (Mute Off/On/Attenuate) */
+int fm_rx_set_mute_mode(struct fmdrv_ops *fmdev,
+ unsigned char mute_mode_toset)
+{
+ unsigned char org_state;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (fmdev->rx.curr_mute_mode == mute_mode_toset)
+ return 0;
+
+ org_state = fmdev->rx.curr_mute_mode;
+ fmdev->rx.curr_mute_mode = mute_mode_toset;
+
+ ret = __fm_config_rx_mute_reg(fmdev);
+ if (ret < 0) {
+ fmdev->rx.curr_mute_mode = org_state;
+ return ret;
+ }
+ return 0;
+}
+
+/* Gets RF dependent soft mute mode enable/disable status */
+int fm_rx_get_rfdepend_softmute(struct fmdrv_ops *fmdev,
+ unsigned char *curr_mute_mode)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+
+ if (curr_mute_mode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *curr_mute_mode = fmdev->rx.curr_rf_depend_mute;
+ return 0;
+}
+
+/* Sets RF dependent soft mute mode */
+int fm_rx_set_rfdepend_softmute(struct fmdrv_ops *fmdev,
+ unsigned char rfdepend_mute)
+{
+ unsigned char org_state;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+
+ if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON &&
+ rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) {
+ pr_err("(fmdrv): Invalid RF dependent soft mute");
+ return -EINVAL;
+ }
+ if (fmdev->rx.curr_rf_depend_mute == rfdepend_mute)
+ return 0;
+
+ org_state = fmdev->rx.curr_rf_depend_mute;
+ fmdev->rx.curr_rf_depend_mute = rfdepend_mute;
+
+ ret = __fm_config_rx_mute_reg(fmdev);
+ if (ret < 0) {
+ fmdev->rx.curr_rf_depend_mute = org_state;
+ return ret;
+ }
+ return 0;
+}
+
+/* Returns the signal strength level of current channel */
+int fm_rx_get_rssi_level(struct fmdrv_ops *fmdev,
+ unsigned short *rssilvl)
+{
+ unsigned short curr_rssi_lel;
+ int resp_len;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (rssilvl == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ /* Read current RSSI level */
+ ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_rssi_lel, &resp_len);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ *rssilvl = FM_BE16_TO_LE16(curr_rssi_lel);
+
+ return 0;
+}
+
+/* Sets the signal strength level that once reached
+ * will stop the auto search process
+ */
+int fm_rx_set_rssi_threshold(struct fmdrv_ops *fmdev,
+ short rssi_lvl_toset)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN ||
+ rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) {
+ pr_err("(fmdrv): Invalid RSSI threshold level");
+ return -EINVAL;
+ }
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)rssi_lvl_toset);
+ ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ fmdev->rx.curr_rssi_threshold = rssi_lvl_toset;
+ return 0;
+}
+
+/* Returns current RX RSSI threshold value */
+int fm_rx_get_rssi_threshold(struct fmdrv_ops *fmdev, short *curr_rssi_lvl)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (curr_rssi_lvl == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *curr_rssi_lvl = fmdev->rx.curr_rssi_threshold;
+ return 0;
+}
+
+/* Sets RX stereo/mono modes */
+int fm_rx_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) {
+ pr_err("(fmdrv): Invalid mode");
+ return -EINVAL;
+ }
+ /* Set stereo/mono mode */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)mode);
+ ret = fmc_send_cmd(fmdev, MOST_MODE_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Set stereo blending mode */
+ FM_STORE_LE16_TO_BE16(payload, FM_STEREO_SOFT_BLEND);
+ ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ return 0;
+}
+
+/* Gets current RX stereo/mono mode */
+int fm_rx_get_stereo_mono(struct fmdrv_ops *fmdev, unsigned short *mode)
+{
+ unsigned short curr_mode;
+ int ret, resp_len;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (mode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ ret = fmc_send_cmd(fmdev, MOST_MODE_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_mode, &resp_len);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ *mode = FM_BE16_TO_LE16(curr_mode);
+ return 0;
+}
+
+/* Choose RX de-emphasis filter mode (50us/75us) */
+int fm_rx_set_deemphasis_mode(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (mode != FM_RX_EMPHASIS_FILTER_50_USEC &&
+ mode != FM_RX_EMPHASIS_FILTER_75_USEC) {
+ pr_err("(fmdrv): Invalid rx de-emphasis mode");
+ return -EINVAL;
+ }
+ FM_STORE_LE16_TO_BE16(payload, mode);
+ ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ return 0;
+}
+
+/* Gets current RX de-emphasis filter mode */
+int fm_rx_get_deemphasis_mode(struct fmdrv_ops *fmdev,
+ unsigned short *curr_deemphasis_mode)
+{
+ unsigned short curr_mode;
+ int ret, resp_len;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (curr_deemphasis_mode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ ret = fmc_send_cmd(fmdev, DEMPH_MODE_GET, NULL, 2,
+ &fmdev->maintask_completion, &curr_mode, &resp_len);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ *curr_deemphasis_mode = FM_BE16_TO_LE16(curr_mode);
+ return 0;
+}
+
+/* Enable/Disable RX RDS */
+int fm_rx_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) {
+ pr_err("(fmdrv): Invalid rds option");
+ return -EINVAL;
+ }
+ if (rds_en_dis == FM_RDS_ENABLE
+ && fmdev->rx.rds.flag == FM_RDS_DISABLE) {
+ /* Turn on RX RDS */
+ /* Turn on RDS circuit */
+ FM_STORE_LE16_TO_BE16(payload,
+ FM_RX_POWET_SET_FM_AND_RDS_BLK_ON);
+ ret = fmc_send_cmd(fmdev, POWER_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Clear and rest RDS FIFO */
+ FM_STORE_LE16_TO_BE16(payload, FM_RX_RDS_FLUSH_FIFO);
+ ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, &payload,
+ sizeof(payload), &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Read flags - just to clear any
+ * pending interrupts if we had
+ */
+ ret = fmc_send_cmd(fmdev, FLAG_GET, NULL, 2,
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Set RDS FIFO threshold value */
+ FM_STORE_LE16_TO_BE16(payload, FM_RX_RDS_FIFO_THRESHOLD);
+ ret = fmc_send_cmd(fmdev, RDS_MEM_SET, &payload,
+ sizeof(payload), &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Enable RDS interrupt */
+ fmdev->irq_info.mask |= FM_RDS_EVENT;
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload,
+ sizeof(payload), &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Update our local flag */
+ fmdev->rx.rds.flag = FM_RDS_ENABLE;
+ } else if (rds_en_dis == FM_RDS_DISABLE
+ && fmdev->rx.rds.flag == FM_RDS_ENABLE) {
+ /* Turn off RX RDS */
+ /* Turn off RDS circuit */
+ FM_STORE_LE16_TO_BE16(payload, FM_RX_POWER_SET_FM_ON_RDS_OFF);
+ ret = fmc_send_cmd(fmdev, POWER_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ /* Reset RDS pointers */
+ fmdev->rx.rds.last_block_index = 0;
+ fmdev->rx.rds.wr_index = 0;
+ fmdev->rx.rds.rd_index = 0;
+ fm_rx_reset_curr_station_info(fmdev);
+
+ /* Update RDS local cache */
+ fmdev->irq_info.mask &= ~(FM_RDS_EVENT);
+ fmdev->rx.rds.flag = FM_RDS_DISABLE;
+ }
+ return 0;
+}
+
+/* Returns current RX RDS enable/disable status */
+int fm_rx_get_rds_mode(struct fmdrv_ops *fmdev,
+ unsigned char *curr_rds_en_dis)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (curr_rds_en_dis == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *curr_rds_en_dis = fmdev->rx.rds.flag;
+ return 0;
+}
+
+/* Sets RDS operation mode (RDS/RDBS) */
+int fm_rx_set_rds_system(struct fmdrv_ops *fmdev, unsigned char rds_mode)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) {
+ pr_err("(fmdrv): Invalid rds mode");
+ return -EINVAL;
+ }
+ /* Set RDS operation mode */
+ FM_STORE_LE16_TO_BE16(payload, (unsigned short)rds_mode);
+ ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ fmdev->rx.rds_mode = rds_mode;
+ return 0;
+}
+
+/* Returns current RDS operation mode */
+int fm_rx_get_rds_system(struct fmdrv_ops *fmdev,
+ unsigned char *rds_mode)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (rds_mode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *rds_mode = fmdev->rx.rds_mode;
+ return 0;
+}
+
+/* Configures Alternate Frequency switch mode */
+int fm_rx_set_af_switch(struct fmdrv_ops *fmdev, unsigned char af_mode)
+{
+ unsigned short payload;
+ int ret;
+
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON &&
+ af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) {
+ pr_err("(fmdrv): Invalid af mode");
+ return -EINVAL;
+ }
+ /* Enable/disable low RSSI interrupt based on af_mode */
+ if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
+ fmdev->irq_info.mask |= FM_LEV_EVENT;
+ else
+ fmdev->irq_info.mask &= ~FM_LEV_EVENT;
+
+ FM_STORE_LE16_TO_BE16(payload, fmdev->irq_info.mask);
+ ret = fmc_send_cmd(fmdev, INT_MASK_SET, &payload, sizeof(payload),
+ &fmdev->maintask_completion, NULL, NULL);
+ FM_CHECK_SEND_CMD_STATUS(ret);
+
+ fmdev->rx.af_mode = af_mode;
+ return 0;
+}
+
+/* Returns Alternate Frequency switch status */
+int fm_rx_get_af_switch(struct fmdrv_ops *fmdev, unsigned char *af_mode)
+{
+ if (fmdev->curr_fmmode != FM_MODE_RX)
+ return -EPERM;
+
+ if (af_mode == NULL) {
+ pr_err("(fmdrv): Invalid memory");
+ return -ENOMEM;
+ }
+ *af_mode = fmdev->rx.af_mode;
+ return 0;
+}
diff --git a/drivers/staging/ti-st/fmdrv_rx.h b/drivers/staging/ti-st/fmdrv_rx.h
new file mode 100644
index 0000000..2ca3eda
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_rx.h
@@ -0,0 +1,56 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ * FM RX module header.
+ *
+ * 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_RX_H
+#define _FMDRV_RX_H
+
+int fm_rx_set_frequency(struct fmdrv_ops*, unsigned int);
+int fm_rx_set_mute_mode(struct fmdrv_ops*, unsigned char);
+int fm_rx_set_stereo_mono(struct fmdrv_ops*, unsigned short);
+int fm_rx_set_rds_mode(struct fmdrv_ops*, unsigned char);
+int fm_rx_set_rds_system(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_volume(struct fmdrv_ops*, unsigned short);
+int fm_rx_set_rssi_threshold(struct fmdrv_ops*, short);
+int fm_rx_set_region(struct fmdrv_ops*, unsigned char);
+int fm_rx_set_rfdepend_softmute(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_deemphasis_mode(struct fmdrv_ops *, unsigned short);
+int fm_rx_set_af_switch(struct fmdrv_ops *, unsigned char);
+
+void fm_rx_reset_rds_cache(struct fmdrv_ops *);
+void fm_rx_reset_curr_station_info(struct fmdrv_ops *);
+
+int fm_rx_seek(struct fmdrv_ops*, unsigned int, unsigned int);
+
+int fm_rx_get_rds_mode(struct fmdrv_ops*, unsigned char*);
+int fm_rx_get_rds_system(struct fmdrv_ops *, unsigned char*);
+int fm_rx_get_mute_mode(struct fmdrv_ops*, unsigned char*);
+int fm_rx_get_volume(struct fmdrv_ops*, unsigned short*);
+int fm_rx_get_currband_lowhigh_freq(struct fmdrv_ops*,
+ unsigned int*, unsigned int*);
+int fm_rx_get_stereo_mono(struct fmdrv_ops *, unsigned short*);
+int fm_rx_get_rssi_level(struct fmdrv_ops *, unsigned short*);
+int fm_rx_get_rssi_threshold(struct fmdrv_ops *, short*);
+int fm_rx_get_rfdepend_softmute(struct fmdrv_ops *, unsigned char*);
+int fm_rx_get_deemphasis_mode(struct fmdrv_ops *, unsigned short*);
+int fm_rx_get_af_switch(struct fmdrv_ops *, unsigned char *);
+
+#endif
+
--
1.5.6.3
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [RFC 3/4] drivers:staging:ti-st: Sources for FM V4L2 interfaces
2010-08-02 13:13 ` [RFC 2/4] drivers:staging:ti-st: Sources for FM RX raja_mani
@ 2010-08-02 13:13 ` raja_mani
2010-08-02 13:13 ` [RFC 4/4] drivers:staging:ti-st: Sources for FM common header raja_mani
0 siblings, 1 reply; 5+ messages in thread
From: raja_mani @ 2010-08-02 13:13 UTC (permalink / raw)
To: olbpdev, linux-media; +Cc: mchehab, Raja-Mani, Pramodh AG
From: Raja-Mani <x0102026@ti.com>
This module interfaces V4L2 subsystem and FM common
module. It registers itself with V4L2 as Radio module.
Signed-off-by: Pramodh AG <pramodh_ag@ti.com>
Signed-off-by: Raja-Mani <x0102026@ti.com>
---
drivers/staging/ti-st/fmdrv_v4l2.c | 550 ++++++++++++++++++++++++++++++++++++
drivers/staging/ti-st/fmdrv_v4l2.h | 32 ++
2 files changed, 582 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv_v4l2.c
create mode 100644 drivers/staging/ti-st/fmdrv_v4l2.h
diff --git a/drivers/staging/ti-st/fmdrv_v4l2.c b/drivers/staging/ti-st/fmdrv_v4l2.c
new file mode 100644
index 0000000..047bce5
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_v4l2.c
@@ -0,0 +1,550 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ * This file provides interfaces to V4L2 subsystem.
+ *
+ * This module registers with V4L2 subsystem as Radio
+ * data system interface (/dev/radio). During the registration,
+ * it will expose two set of function pointers to V4L2 subsystem.
+ *
+ * 1) File operation related API (open, close, read, write, poll...etc).
+ * 2) Set of V4L2 IOCTL complaint API.
+ *
+ * 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
+ *
+ */
+
+#include "fmdrv.h"
+#include "fmdrv_v4l2.h"
+#include "fmdrv_common.h"
+#include "fmdrv_rx.h"
+/* TODO: Enable when FM TX is supported */
+/* #include "fmdrv_tx.h" */
+
+static struct video_device *gradio_dev;
+static unsigned char radio_disconnected;
+
+/* Query control */
+static struct v4l2_queryctrl fmdrv_v4l2_queryctrl[] = {
+ {
+ .id = V4L2_CID_AUDIO_VOLUME,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Volume",
+ .minimum = FM_RX_VOLUME_MIN,
+ .maximum = FM_RX_VOLUME_MAX,
+ .step = 1,
+ .default_value = FM_DEFAULT_RX_VOLUME,
+ },
+ {
+ .id = V4L2_CID_AUDIO_BALANCE,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+ {
+ .id = V4L2_CID_AUDIO_BASS,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+ {
+ .id = V4L2_CID_AUDIO_TREBLE,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+ {
+ .id = V4L2_CID_AUDIO_MUTE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Mute",
+ .minimum = 0,
+ .maximum = 2,
+ .step = 1,
+ .default_value = FM_MUTE_OFF,
+ },
+ {
+ .id = V4L2_CID_AUDIO_LOUDNESS,
+ .flags = V4L2_CTRL_FLAG_DISABLED,
+ },
+};
+
+/* -- V4L2 RADIO (/dev/radioX) device file operation interfaces --- */
+/* Read RX RDS data */
+static ssize_t fm_v4l2_fops_read(struct file *file, char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ unsigned char rds_mode;
+ int ret;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+
+ if (!radio_disconnected) {
+ pr_err("(fmdrv): FM device is already disconnected\n");
+ ret = -EIO;
+ goto exit;
+ }
+
+ /* Turn on RDS mode , if it is disabled */
+ ret = fm_rx_get_rds_mode(fmdev, &rds_mode);
+ if (ret < 0) {
+ pr_err("(fmdrv): Unable to read current rds mode");
+ goto exit;
+ }
+ if (rds_mode == FM_RDS_DISABLE) {
+ ret = fmc_set_rds_mode(fmdev, FM_RDS_ENABLE);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to enable rds mode");
+ goto exit;
+ }
+ }
+ /* Copy RDS data from internal buffer to user buffer */
+ ret = fmc_transfer_rds_from_internal_buff(fmdev, file, buf, count);
+
+exit:
+ return ret;
+}
+
+/* Write RDS data.
+ * TODO: When FM TX support is added, use "V4L2_CID_RDS_TX_XXXX" codes,
+ * instead of write operation.
+ */
+static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ struct tx_rds rds;
+ int ret;
+ struct fmdrv_ops *fmdev;
+
+ ret = copy_from_user(&rds, buf, sizeof(rds));
+ pr_info("(fmdrv): (%d)type: %d, text %s, af %d",
+ ret, rds.text_type, rds.text, rds.af_freq);
+
+ fmdev = video_drvdata(file);
+ /* TODO: Enable when FM TX is supported */
+ /* fm_tx_set_radio_text(fmdev, rds.text, rds.text_type); */
+ /* fm_tx_set_af(fmdev, rds.af_freq); */
+
+ return 0;
+}
+
+static unsigned int fm_v4l2_fops_poll(struct file *file,
+ struct poll_table_struct *pts)
+{
+ int ret;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+ ret = fmc_is_rds_data_available(fmdev, file, pts);
+ if (!ret)
+ return POLLIN | POLLRDNORM;
+ return 0;
+}
+
+/* Handle open request for "/dev/radioX" device.
+ * Start with FM RX mode as default.
+ */
+static int fm_v4l2_fops_open(struct file *file)
+{
+ int ret;
+ struct fmdrv_ops *fmdev = NULL;
+
+ /* Don't allow multiple open */
+ if (radio_disconnected) {
+ pr_err("(fmdrv): FM device is already opened\n");
+ ret = -EBUSY;
+ goto exit;
+ }
+
+ fmdev = video_drvdata(file);
+ ret = fmc_prepare(fmdev);
+ if (ret < 0) {
+ pr_err("(fmdrv): Unable to prepare FM CORE");
+ goto exit;
+ }
+
+ pr_info("(fmdrv): Load FM RX firmware..");
+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
+ if (ret < 0) {
+ pr_err("(fmdrv): Unable to load FM RX firmware");
+ goto exit;
+ }
+ radio_disconnected = 1;
+
+exit:
+ return ret;
+}
+
+static int fm_v4l2_fops_release(struct file *file)
+{
+ int ret = 0;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+ if (!radio_disconnected) {
+ pr_info("(fmdrv):FM dev already closed, close called again?");
+ goto exit;
+ }
+ ret = fmc_set_mode(fmdev, FM_MODE_OFF);
+ if (ret < 0) {
+ pr_err("(fmdrv): Unable to turn off the chip");
+ goto exit;
+ }
+ ret = fmc_release(fmdev);
+ if (ret < 0) {
+ pr_err("(fmdrv): FM CORE release failed");
+ goto exit;
+ }
+ radio_disconnected = 0;
+
+exit:
+ return ret;
+}
+
+/* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */
+static int fm_v4l2_vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *capability)
+{
+ strlcpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver));
+ strlcpy(capability->card, FM_DRV_CARD_SHORT_NAME,
+ sizeof(capability->card));
+ sprintf(capability->bus_info, "UART");
+ capability->version = FM_DRV_RADIO_VERSION;
+ capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
+ V4L2_CAP_RADIO | V4L2_CAP_MODULATOR |
+ V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
+ V4L2_CAP_RDS_CAPTURE;
+ return 0;
+}
+
+static int fm_v4l2_vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ int index;
+ int ret = -EINVAL;
+
+ if (qc->id < V4L2_CID_BASE)
+ return ret;
+
+ /* Search control ID and copy its properties */
+ for (index = 0; index < NO_OF_ENTRIES_IN_ARRAY(fmdrv_v4l2_queryctrl);\
+ index++) {
+ if (qc->id && qc->id == fmdrv_v4l2_queryctrl[index].id) {
+ memcpy(qc, &(fmdrv_v4l2_queryctrl[index]), sizeof(*qc));
+ ret = 0;
+ break;
+ }
+ }
+ return ret;
+}
+
+static int fm_v4l2_vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ int ret = -EINVAL;
+ unsigned short curr_vol;
+ unsigned char curr_mute_mode;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE: /* get mute mode */
+ ret = fm_rx_get_mute_mode(fmdev, &curr_mute_mode);
+ if (ret < 0)
+ goto exit;
+ ctrl->value = curr_mute_mode;
+ break;
+ case V4L2_CID_AUDIO_VOLUME: /* get volume */
+ ret = fm_rx_get_volume(fmdev, &curr_vol);
+ if (ret < 0)
+ goto exit;
+ ctrl->value = curr_vol;
+ break;
+ }
+
+exit:
+ return ret;
+}
+
+static int fm_v4l2_vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ int ret = -EINVAL;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE: /* set mute */
+ ret = fmc_set_mute_mode(fmdev, (unsigned char)ctrl->value);
+ if (ret < 0)
+ goto exit;
+ break;
+ case V4L2_CID_AUDIO_VOLUME: /* set volume */
+ ret = fm_rx_set_volume(fmdev, (unsigned short)ctrl->value);
+ if (ret < 0)
+ goto exit;
+ break;
+ }
+
+exit:
+ return ret;
+}
+
+static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv,
+ struct v4l2_audio *audio)
+{
+ memset(audio, 0, sizeof(*audio));
+ audio->index = 0;
+ strcpy(audio->name, "Radio");
+ audio->capability = V4L2_AUDCAP_STEREO;
+
+ return 0;
+}
+
+static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv,
+ struct v4l2_audio *audio)
+{
+ if (audio->index != 0)
+ return -EINVAL;
+ return 0;
+}
+
+/* Get tuner attributes. If current mode is NOT RX, set to RX */
+static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *tuner)
+{
+ unsigned int bottom_frequency;
+ unsigned int top_frequency;
+ unsigned short stereo_mono_mode;
+ unsigned short rssilvl;
+ int ret = -EINVAL;
+ struct fmdrv_ops *fmdev;
+
+ if (tuner->index != 0)
+ goto exit;
+
+ fmdev = video_drvdata(file);
+ if (fmdev->curr_fmmode != FM_MODE_RX) {
+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX mode; unable to " \
+ "read tuner attributes\n");
+ goto exit;
+ }
+ }
+
+ ret = fm_rx_get_currband_lowhigh_freq(fmdev, &bottom_frequency,
+ &top_frequency);
+ if (ret < 0)
+ goto exit;
+
+ ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode);
+ if (ret < 0)
+ goto exit;
+
+ ret = fm_rx_get_rssi_level(fmdev, &rssilvl);
+ if (ret < 0)
+ goto exit;
+
+ strcpy(tuner->name, "FM");
+ tuner->type = V4L2_TUNER_RADIO;
+ /* Store rangelow and rangehigh freq in unit of 62.5 KHz */
+ tuner->rangelow = (bottom_frequency * 10000) / 625;
+ tuner->rangehigh = (top_frequency * 10000) / 625;
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO |
+ ((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0);
+ tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS;
+ tuner->audmode = (stereo_mono_mode ?
+ V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO);
+
+ /* Actual rssi value lies in between -128 to +127.
+ * Convert this range from 0 to 255 by adding +128
+ */
+ rssilvl += 128;
+
+ /* Return signal strength value should be within 0 to 65535.
+ * Find out correct signal radio by multiplying (65535/255) = 257
+ */
+ tuner->signal = rssilvl * 257;
+ tuner->afc = 0;
+
+exit:
+ return ret;
+}
+
+/* Set tuner attributes. If current mode is NOT RX, set to RX.
+ * Currently, we set only audio mode (mono/stereo) and RDS state (on/off).
+ * Should we set other tuner attributes, too?
+ */
+static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *tuner)
+{
+ unsigned short aud_mode;
+ unsigned char rds_mode;
+ int ret = -EINVAL;
+ struct fmdrv_ops *fmdev;
+
+ if (tuner->index != 0)
+ goto exit;
+
+ aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ?
+ FM_STEREO_MODE : FM_MONO_MODE;
+ rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ?
+ FM_RDS_ENABLE : FM_RDS_DISABLE;
+
+ fmdev = video_drvdata(file);
+ if (fmdev->curr_fmmode != FM_MODE_RX) {
+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
+ if (ret < 0) {
+ pr_err("(fmdrv): Failed to set RX mode; unable to" \
+ "write tuner attributes\n");
+ goto exit;
+ }
+ }
+
+ ret = fmc_set_stereo_mono(fmdev, aud_mode);
+ if (ret < 0)
+ goto exit;
+
+ ret = fmc_set_rds_mode(fmdev, rds_mode);
+ if (ret < 0)
+ goto exit;
+
+exit:
+ return ret;
+}
+
+/* Get tuner or modulator radio frequency */
+static int fm_v4l2_vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *freq)
+{
+ int ret;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+ ret = fmc_get_frequency(fmdev, &freq->frequency);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+/* Set tuner or modulator radio frequency */
+static int fm_v4l2_vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *freq)
+{
+ int ret;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+ ret = fmc_set_frequency(fmdev, freq->frequency);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+/* Set hardware frequency seek. If current mode is NOT RX, set it RX. */
+static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv,
+ struct v4l2_hw_freq_seek *seek)
+{
+ int ret;
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_drvdata(file);
+ if (fmdev->curr_fmmode != FM_MODE_RX) {
+ ret = fmc_set_mode(fmdev, FM_MODE_RX);
+ if (ret != 0) {
+ pr_err("(fmdrv): Failed to set RX mode; unable to " \
+ "start HW frequency seek\n");
+ goto exit;
+ }
+ }
+
+ ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around);
+ if (ret < 0)
+ goto exit;
+
+exit:
+ return ret;
+}
+
+static const struct v4l2_file_operations fm_drv_fops = {
+ .owner = THIS_MODULE,
+ .read = fm_v4l2_fops_read,
+ .write = fm_v4l2_fops_write,
+ .poll = fm_v4l2_fops_poll,
+ .ioctl = video_ioctl2,
+ .open = fm_v4l2_fops_open,
+ .release = fm_v4l2_fops_release,
+};
+
+static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = {
+ .vidioc_querycap = fm_v4l2_vidioc_querycap,
+ .vidioc_queryctrl = fm_v4l2_vidioc_queryctrl,
+ .vidioc_g_ctrl = fm_v4l2_vidioc_g_ctrl,
+ .vidioc_s_ctrl = fm_v4l2_vidioc_s_ctrl,
+ .vidioc_g_audio = fm_v4l2_vidioc_g_audio,
+ .vidioc_s_audio = fm_v4l2_vidioc_s_audio,
+ .vidioc_g_tuner = fm_v4l2_vidioc_g_tuner,
+ .vidioc_s_tuner = fm_v4l2_vidioc_s_tuner,
+ .vidioc_g_frequency = fm_v4l2_vidioc_g_frequency,
+ .vidioc_s_frequency = fm_v4l2_vidioc_s_frequency,
+ .vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek
+};
+
+/* V4L2 RADIO device parent structure */
+static struct video_device fm_viddev_template = {
+ .fops = &fm_drv_fops,
+ .ioctl_ops = &fm_drv_ioctl_ops,
+ .name = FM_DRV_NAME,
+ .release = video_device_release,
+};
+
+int fm_v4l2_init_video_device(struct fmdrv_ops *fmdev, int radio_nr)
+{
+ int ret = -ENOMEM;
+
+ gradio_dev = NULL;
+ /* Allocate new video device */
+ gradio_dev = video_device_alloc();
+ if (NULL == gradio_dev) {
+ pr_err("(fmdrv): Can't allocate video device");
+ goto exit;
+ }
+
+ /* Setup FM driver's V4L2 properties */
+ memcpy(gradio_dev, &fm_viddev_template, sizeof(fm_viddev_template));
+
+ video_set_drvdata(gradio_dev, fmdev);
+
+ /* Register with V4L2 subsystem as RADIO device */
+ if (video_register_device(gradio_dev, VFL_TYPE_RADIO, radio_nr)) {
+ video_device_release(gradio_dev);
+ pr_err("(fmdrv): Could not register video device");
+ goto exit;
+ }
+
+ fmdev->radio_dev = gradio_dev;
+ ret = 0;
+
+exit:
+ return ret;
+}
+
+void *fm_v4l2_deinit_video_device(void)
+{
+ struct fmdrv_ops *fmdev;
+
+ fmdev = video_get_drvdata(gradio_dev);
+ /* Unregister RADIO device from V4L2 subsystem */
+ video_unregister_device(gradio_dev);
+
+ return fmdev;
+}
diff --git a/drivers/staging/ti-st/fmdrv_v4l2.h b/drivers/staging/ti-st/fmdrv_v4l2.h
new file mode 100644
index 0000000..6f0a415
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv_v4l2.h
@@ -0,0 +1,32 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ *
+ * FM V4L2 module header.
+ *
+ * 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_V4L2_H
+#define _FMDRV_V4L2_H
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+
+int fm_v4l2_init_video_device(struct fmdrv_ops *, int);
+void *fm_v4l2_deinit_video_device(void);
+
+#endif
--
1.5.6.3
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [RFC 4/4] drivers:staging:ti-st: Sources for FM common header
2010-08-02 13:13 ` [RFC 3/4] drivers:staging:ti-st: Sources for FM V4L2 interfaces raja_mani
@ 2010-08-02 13:13 ` raja_mani
0 siblings, 0 replies; 5+ messages in thread
From: raja_mani @ 2010-08-02 13:13 UTC (permalink / raw)
To: olbpdev, linux-media; +Cc: mchehab, Raja-Mani, Pramodh AG
From: Raja-Mani <x0102026@ti.com>
This is a common header used in all FM submodules
(FM V4L2,FM common,FM Rx).
Signed-off-by: Pramodh AG <pramodh_ag@ti.com>
Signed-off-by: Raja-Mani <x0102026@ti.com>
---
drivers/staging/ti-st/fmdrv.h | 225 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 225 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv.h
diff --git a/drivers/staging/ti-st/fmdrv.h b/drivers/staging/ti-st/fmdrv.h
new file mode 100644
index 0000000..d560570
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv.h
@@ -0,0 +1,225 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ *
+ * Common header for all FM driver sub-modules.
+ *
+ * Copyright (C) 2009 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 _FM_DRV_H
+#define _FM_DRV_H
+
+#include <linux/skbuff.h>
+#include <linux/interrupt.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+
+#define FM_DRV_VERSION "0.01"
+/* Should match with FM_DRV_VERSION */
+#define FM_DRV_RADIO_VERSION KERNEL_VERSION(0, 0, 1)
+#define FM_DRV_NAME "ti_fmdrv"
+#define FM_DRV_CARD_SHORT_NAME "TI FM Radio"
+#define FM_DRV_CARD_LONG_NAME "Texas Instruments FM Radio"
+
+/* Flag info */
+#define FM_INTTASK_RUNNING 0
+#define FM_INTTASK_SCHEDULE_PENDING 1
+#define FM_FIRMWARE_DW_INPROGRESS 2
+#define FM_CORE_READY 3
+#define FM_CORE_TRANSPORT_READY 4
+#define FM_AF_SWITCH_INPROGRESS 5
+#define FM_CORE_TX_XMITING 6
+
+#define FM_DRV_TX_TIMEOUT (5*HZ) /* 5 seconds */
+#define FM_DRV_RX_SEEK_TIMEOUT (20*HZ) /* 20 seconds */
+
+#define NO_OF_ENTRIES_IN_ARRAY(array) (sizeof(array) / sizeof(array[0]))
+
+enum {
+ FM_MODE_OFF,
+ FM_MODE_TX,
+ FM_MODE_RX,
+ FM_MODE_ENTRY_MAX
+};
+
+#define FM_RX_RDS_INFO_FIELD_MAX 8 /* 4 Group * 2 Bytes */
+
+/* RX RDS data format */
+struct fm_rdsdata_format {
+ union {
+ struct {
+ unsigned char rdsbuff[FM_RX_RDS_INFO_FIELD_MAX];
+ } groupdatabuff;
+ struct {
+ unsigned short pidata;
+ unsigned char block_b_byte1;
+ unsigned char block_b_byte2;
+ unsigned char block_c_byte1;
+ unsigned char block_c_byte2;
+ unsigned char block_d_byte1;
+ unsigned char block_d_byte2;
+ } groupgeneral;
+ struct {
+ unsigned short pidata;
+ unsigned char block_b_byte1;
+ unsigned char block_b_byte2;
+ unsigned char firstaf;
+ unsigned char secondaf;
+ unsigned char firstpsbyte;
+ unsigned char secondpsbyte;
+ } group0A;
+
+ struct {
+ unsigned short pidata;
+ unsigned char block_b_byte1;
+ unsigned char block_b_byte2;
+ unsigned short pidata2;
+ unsigned char firstpsbyte;
+ unsigned char secondpsbyte;
+ } group0B;
+ } rdsdata;
+};
+
+/* FM region (Europe/US, Japan) info */
+struct region_info {
+ unsigned int channel_spacing;
+ unsigned int bottom_frequency;
+ unsigned int top_frequency;
+ unsigned char region_index;
+};
+
+typedef void (*int_handler_prototype) (void *);
+
+/* FM Interrupt processing related info */
+struct fm_irq {
+ unsigned char stage_index;
+ unsigned short flag; /* FM interrupt flag */
+ unsigned short mask; /* FM interrupt mask */
+ /* Interrupt process timeout handler */
+ struct timer_list int_timeout_timer;
+ unsigned char irq_service_timeout_retry;
+ int_handler_prototype *fm_int_handlers;
+};
+
+/* RDS info */
+struct fm_rds {
+ unsigned char flag; /* RX RDS on/off status */
+ unsigned char last_block_index; /* Last received RDS block */
+
+ /* RDS buffer */
+ wait_queue_head_t read_queue;
+ unsigned int buf_size; /* Size is always multiple of 3 */
+ unsigned int wr_index;
+ unsigned int rd_index;
+ unsigned char *buffer;
+};
+
+#define FM_RDS_MAX_AF_LIST 25
+
+/* Current RX channel Alternate Frequency cache.
+ * This info is used to switch to other freq (AF)
+ * when current channel signal strengh is below RSSI threshold.
+ */
+struct tuned_station_info {
+ unsigned short picode;
+ unsigned int af_cache[FM_RDS_MAX_AF_LIST];
+ unsigned char no_of_items_in_afcache;
+ unsigned char af_list_max;
+};
+
+/* FM RX mode info */
+struct fm_rx {
+ struct region_info region; /* Current selected band */
+ unsigned int curr_freq; /* Current RX frquency */
+ unsigned char curr_mute_mode; /* Current mute mode */
+ /* RF dependent soft mute mode */
+ unsigned char curr_rf_depend_mute;
+ unsigned short curr_volume; /* Current volume level */
+ short curr_rssi_threshold; /* Current RSSI threshold level */
+ /* Holds the index of the current AF jump */
+ unsigned char cur_afjump_index;
+ /* Will hold the frequency before the jump */
+ unsigned int freq_before_jump;
+ unsigned char rds_mode; /* RDS operation mode (RDS/RDBS) */
+ unsigned char af_mode; /* Alternate frequency on/off */
+ struct tuned_station_info cur_station_info;
+ struct fm_rds rds;
+};
+
+/*
+ * FM TX RDS data
+ *
+ * @ text_type: is the text following PS or RT
+ * @ text: radio text string which could either be PS or RT
+ * @ af_freq: alternate frequency for Tx
+ * TODO: to be declared in application
+ */
+struct tx_rds {
+ unsigned char text_type;
+ unsigned char text[25];
+ unsigned int af_freq;
+};
+/*
+ * FM TX global data
+ *
+ * @ pwr_lvl: Power Level of the Transmission from mixer control
+ * @ xmit_state: Transmission state = Updated locally upon Start/Stop
+ * @ audio_io: i2S/Analog
+ * @ tx_frq: Transmission frequency
+ */
+struct fmtx_data {
+ unsigned char pwr_lvl;
+ unsigned char xmit_state;
+ unsigned char audio_io;
+ unsigned long tx_frq;
+ struct tx_rds rds;
+};
+
+/* FM driver operation structure */
+struct fmdrv_ops {
+ struct video_device *radio_dev; /* V4L2 video device pointer */
+ struct snd_card *card; /* Card which holds FM mixer controls */
+ unsigned short asci_id;
+ spinlock_t rds_buff_lock; /* To protect access to RDS buffer */
+ spinlock_t resp_skb_lock; /* To protect access to received SKB */
+
+ long flag; /* FM driver state machine info */
+ char streg_cbdata; /* status of ST registration */
+
+ struct sk_buff_head rx_q; /* RX queue */
+ struct tasklet_struct rx_task; /* RX Tasklet */
+
+ struct sk_buff_head tx_q; /* TX queue */
+ struct tasklet_struct tx_task; /* TX Tasklet */
+ unsigned long last_tx_jiffies; /* Timestamp of last pkt sent */
+ atomic_t tx_cnt; /* Number of packets can send at a time */
+
+ struct sk_buff *response_skb; /* Response from the chip */
+ /* Main task completion handler */
+ struct completion maintask_completion;
+ /* Opcode of last command sent to the chip */
+ unsigned char last_sent_pkt_opcode;
+ /* Handler used for wakeup when response packet is received */
+ struct completion *response_completion;
+ struct fm_irq irq_info;
+ unsigned char curr_fmmode; /* Current FM chip mode (TX, RX, OFF) */
+ struct fm_rx rx; /* FM receiver info */
+ struct fmtx_data tx_data;
+};
+#endif
--
1.5.6.3
^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2010-08-02 13:13 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-08-02 13:13 [RFC 0/4] FM V4L2 driver for WL128x raja_mani
2010-08-02 13:13 ` [RFC 1/4] drivers:staging:ti-st: sources for FM common interfaces raja_mani
2010-08-02 13:13 ` [RFC 2/4] drivers:staging:ti-st: Sources for FM RX raja_mani
2010-08-02 13:13 ` [RFC 3/4] drivers:staging:ti-st: Sources for FM V4L2 interfaces raja_mani
2010-08-02 13:13 ` [RFC 4/4] drivers:staging:ti-st: Sources for FM common header raja_mani
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.