Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-10 15:19:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[media] radio-sf16fmi: Use LM7000 driver

Browse Source 
Convert radio-sf16fmi to use generic LM7000 driver.
Tested with SF16-FMI, SF16-FMP and SF16-FMD.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Ondrej Zary 2012-06-13 17:25:44 -03:00 committed by Mauro Carvalho Chehab
parent 39cca6b821
commit 6b39023a36
1 changed files with 25 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
drivers/media/radio/radio-sf16fmi.c
View File

@ -27,6 +27,7 @@
#include <linux/io.h> /* outb, outb_p */
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include "lm7000.h"
MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood");
MODULE_DESCRIPTION("A driver for the SF16-FMI, SF16-FMP and SF16-FMD radio.");
@ -54,31 +55,33 @@ static struct fmi fmi_card;
static struct pnp_dev *dev;
bool pnp_attached;
/* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */
/* It is only useful to give freq in interval of 800 (=0.05Mhz),
* other bits will be truncated, e.g 92.7400016 -> 92.7, but
* 92.7400017 -> 92.75
*/
#define RSF16_ENCODE(x) ((x) / 800 + 214)
#define RSF16_MINFREQ (87 * 16000)
#define RSF16_MAXFREQ (108 * 16000)
static void outbits(int bits, unsigned int data, int io)
#define FMI_BIT_TUN_CE (1 << 0)
#define FMI_BIT_TUN_CLK (1 << 1)
#define FMI_BIT_TUN_DATA (1 << 2)
#define FMI_BIT_VOL_SW (1 << 3)
#define FMI_BIT_TUN_STRQ (1 << 4)
void fmi_set_pins(void *handle, u8 pins)
{
while (bits--) {
if (data & 1) {
outb(5, io);
udelay(6);
outb(7, io);
udelay(6);
} else {
outb(1, io);
udelay(6);
outb(3, io);
udelay(6);
}
data >>= 1;
}
struct fmi *fmi = handle;
u8 bits = FMI_BIT_TUN_STRQ;
if (!fmi->mute)
bits |= FMI_BIT_VOL_SW;
if (pins & LM7000_DATA)
bits |= FMI_BIT_TUN_DATA;
if (pins & LM7000_CLK)
bits |= FMI_BIT_TUN_CLK;
if (pins & LM7000_CE)
bits |= FMI_BIT_TUN_CE;
mutex_lock(&fmi->lock);
outb_p(bits, fmi->io);
mutex_unlock(&fmi->lock);
}
static inline void fmi_mute(struct fmi *fmi)
@ -95,20 +98,6 @@ static inline void fmi_unmute(struct fmi *fmi)
mutex_unlock(&fmi->lock);
}
static inline int fmi_setfreq(struct fmi *fmi, unsigned long freq)
{
mutex_lock(&fmi->lock);
fmi->curfreq = freq;
outbits(16, RSF16_ENCODE(freq), fmi->io);
outbits(8, 0xC0, fmi->io);
msleep(143); /* was schedule_timeout(HZ/7) */
mutex_unlock(&fmi->lock);
if (!fmi->mute)
fmi_unmute(fmi);
return 0;
}
static inline int fmi_getsigstr(struct fmi *fmi)
{
int val;
@ -173,7 +162,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
return -EINVAL;
/* rounding in steps of 800 to match the freq
that will be used */
fmi_setfreq(fmi, (f->frequency / 800) * 800);
lm7000_set_freq((f->frequency / 800) * 800, fmi, fmi_set_pins);
return 0;
}