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This patch adds RDS capability to Samsung YP-R0 target.

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Uses register polling method to decide when it's time to decode
RDS packets.

Change-Id: I1d3cc995ea3350ec7b101438b8f2027130d4a4c9
Reviewed-on: http://gerrit.rockbox.org/320
Reviewed-by: Lorenzo Miori <memorys60@gmail.com>
Tested-by: Lorenzo Miori <memorys60@gmail.com>
Reviewed-by: Thomas Martitz <kugel@rockbox.org>
Tested-by: Thomas Martitz <kugel@rockbox.org>
This commit is contained in:
Lorenzo Miori 2012-09-27 11:56:03 +02:00 • committed by Thomas Martitz
parent 93023002d6
commit d2875fc773
2 changed files with 62 additions and 12 deletions
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13
firmware/export/config/samsungypr0.h
View file

@ -18,9 +18,6 @@
/*TODO: implement USB data transfer management -> see safe mode script and think a way to implemtent it in the code */
#define USB_NONE
/* There is only USB charging */
//#define HAVE_USB_POWER
/* define this if you have a bitmap LCD display */
#define HAVE_LCD_BITMAP
@ -28,7 +25,6 @@
#define HAVE_LCD_COLOR
/* define this if the LCD needs to be shutdown */
/* TODO: Our framebuffer must be closed... */
#define HAVE_LCD_SHUTDOWN
/* define this if you want album art for this target */
@ -84,7 +80,6 @@
/* The number of bytes reserved for loadable plugins */
#define PLUGIN_BUFFER_SIZE 0x100000
/* We can do AB-repeat -> we use User key, our hotkey */
#define AB_REPEAT_ENABLE
#define ACTION_WPSAB_SINGLE ACTION_WPS_HOTKEY
@ -93,10 +88,9 @@
/* R0 KeyPad configuration for plugins */
#define CONFIG_KEYPAD SAMSUNG_YPR0_PAD
/* It's better to close /dev/r0Btn at shutdown */
#define BUTTON_DRIVER_CLOSE
/* The YPR0 has a as3534 codec and we use that to control the volume */
/* The YPR0 has a as3534 codec */
#define HAVE_AS3514
#define HAVE_AS3543
@ -105,10 +99,7 @@
#define CONFIG_TUNER SI4700
#define HAVE_TUNER_PWR_CTRL
/* TODO: next step: enable RDS
#define HAVE_RDS_CAP
#define RDS_ISR_PROCESSING
*/
/* Define this for FM radio input available */
#define HAVE_FMRADIO_IN
@ -154,5 +145,5 @@
/* Max IMX37 Cpu Frequency */
/* #define CPUFREQ_MAX CPU_FREQ */
/* TODO: my idea is to create a folder in the cramfs [/.rockbox], mounting it by the starter script as the current working directory, so no issues of any type keeping the rockbox folder as in all other players */
/* This folder resides in the ReadOnly CRAMFS. It is binded to /mnt/media0/.rockbox */
#define BOOTDIR "/.rockbox"

59
firmware/target/hosted/ypr0/radio-ypr0.c
View file

@ -25,8 +25,12 @@
#include <sys/ioctl.h>
#include "stdint.h"
#include "string.h"
#include "kernel.h"
#include "radio-ypr0.h"
#include "rds.h"
#include "si4700.h"
#include "power.h"
static int radio_dev = -1;
@ -64,3 +68,58 @@ int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
sSi4709_i2c_t r = { .size = count, .buf = buf };
return ioctl(radio_dev, IOCTL_SI4709_I2C_READ, &r);
}
#ifdef HAVE_RDS_CAP
/* Register we are going to poll */
#define STATUSRSSI 0xA
#define STATUSRSSI_RDSR (0x1 << 15)
/* Low-level RDS Support */
static struct event_queue rds_queue;
static uint32_t rds_stack[DEFAULT_STACK_SIZE / sizeof(uint32_t)];
static uint16_t rds_data[4];
enum {
Q_POWERUP,
};
static void NORETURN_ATTR rds_thread(void)
{
/* start up frozen */
int timeout = TIMEOUT_BLOCK;
struct queue_event ev;
while (true) {
queue_wait_w_tmo(&rds_queue, &ev, timeout);
switch (ev.id) {
case Q_POWERUP:
/* power up: timeout after 1 tick, else block indefinitely */
timeout = ev.data ? 1 : TIMEOUT_BLOCK;
break;
case SYS_TIMEOUT:
/* Captures RDS data and processes it */
if ((si4709_read_reg(STATUSRSSI) & STATUSRSSI_RDSR) >> 8) {
if (si4700_rds_read_raw(rds_data) && rds_process(rds_data))
si4700_rds_set_event();
}
break;
}
}
}
/* true after full radio power up, and false before powering down */
void si4700_rds_powerup(bool on)
{
queue_post(&rds_queue, Q_POWERUP, on);
}
/* One-time RDS init at startup */
void si4700_rds_init(void)
{
queue_init(&rds_queue, false);
create_thread(rds_thread, rds_stack, sizeof(rds_stack), 0, "rds"
IF_PRIO(, PRIORITY_PLAYBACK) IF_COP(, CPU));
rds_init();
}
#endif /* HAVE_RDS_CAP */