On Wed June 13 2012 23:25:32 Ondrej Zary wrote:
> Add very simple driver for Sanyo LM7000 AM/FM tuner chip. Only FM is supported
> as there is no known HW with AM implemented.
>
> This will be used by radio-aimslab and radio-sf16fmi.
>
> Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
For all three patches:
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Thanks!
Hans
>
> diff --git a/drivers/media/radio/lm7000.h b/drivers/media/radio/lm7000.h
> new file mode 100644
> index 0000000..139cd6b
> --- /dev/null
> +++ b/drivers/media/radio/lm7000.h
> @@ -0,0 +1,43 @@
> +#ifndef __LM7000_H
> +#define __LM7000_H
> +
> +/* Sanyo LM7000 tuner chip control
> + *
> + * Copyright 2012 Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
> + * based on radio-aimslab.c by M. Kirkwood
> + * and radio-sf16fmi.c by M. Kirkwood and Petr Vandrovec
> + */
> +
> +#define LM7000_DATA (1 << 0)
> +#define LM7000_CLK (1 << 1)
> +#define LM7000_CE (1 << 2)
> +
> +#define LM7000_FM_100 (0 << 20)
> +#define LM7000_FM_50 (1 << 20)
> +#define LM7000_FM_25 (2 << 20)
> +#define LM7000_BIT_FM (1 << 23)
> +
> +static inline void lm7000_set_freq(u32 freq, void *handle,
> + void (*set_pins)(void *handle, u8 pins))
> +{
> + int i;
> + u8 data;
> + u32 val;
> +
> + freq += 171200; /* Add 10.7 MHz IF */
> + freq /= 400; /* Convert to 25 kHz units */
> + val = freq | LM7000_FM_25 | LM7000_BIT_FM;
> + /* write the 24-bit register, starting with LSB */
> + for (i = 0; i < 24; i++) {
> + data = val & (1 << i) ? LM7000_DATA : 0;
> + set_pins(handle, data | LM7000_CE);
> + udelay(2);
> + set_pins(handle, data | LM7000_CE | LM7000_CLK);
> + udelay(2);
> + set_pins(handle, data | LM7000_CE);
> + udelay(2);
> + }
> + set_pins(handle, 0);
> +}
> +
> +#endif /* __LM7000_H */
>
>
>
>
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