Re: [PATCH v4 4/5] V4L2: WL1273 FM Radio: Controls for the FM radio.
On Friday 04 June 2010 12:34:22 Matti J. Aaltonen wrote:
> This file implements V4L2 controls for using the Texas Instruments
> WL1273 FM Radio.
>
> Signed-off-by: Matti J. Aaltonen
> ---
> drivers/media/radio/Kconfig| 15 +
> drivers/media/radio/Makefile |1 +
> drivers/media/radio/radio-wl1273.c | 1907
>
> 3 files changed, 1923 insertions(+), 0 deletions(-)
> create mode 100644 drivers/media/radio/radio-wl1273.c
>
> diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
> index 83567b8..209fd37 100644
> --- a/drivers/media/radio/Kconfig
> +++ b/drivers/media/radio/Kconfig
> @@ -452,4 +452,19 @@ config RADIO_TIMBERDALE
> found behind the Timberdale FPGA on the Russellville board.
> Enabling this driver will automatically select the DSP and tuner.
>
> +config RADIO_WL1273
> + tristate "Texas Instruments WL1273 I2C FM Radio"
> +depends on I2C && VIDEO_V4L2 && SND
> + select FW_LOADER
> + ---help---
> + Choose Y here if you have this FM radio chip.
> +
> + In order to control your radio card, you will need to use programs
> + that are compatible with the Video For Linux 2 API. Information on
> + this API and pointers to "v4l2" programs may be found at
> + .
> +
> + To compile this driver as a module, choose M here: the
> + module will be called radio-wl1273.
> +
> endif # RADIO_ADAPTERS
> diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
> index f615583..d297074 100644
> --- a/drivers/media/radio/Makefile
> +++ b/drivers/media/radio/Makefile
> @@ -26,5 +26,6 @@ obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o
> obj-$(CONFIG_RADIO_SAA7706H) += saa7706h.o
> obj-$(CONFIG_RADIO_TEF6862) += tef6862.o
> obj-$(CONFIG_RADIO_TIMBERDALE) += radio-timb.o
> +obj-$(CONFIG_RADIO_WL1273) += radio-wl1273.o
>
> EXTRA_CFLAGS += -Isound
> diff --git a/drivers/media/radio/radio-wl1273.c
> b/drivers/media/radio/radio-wl1273.c
> new file mode 100644
> index 000..473c194
> --- /dev/null
> +++ b/drivers/media/radio/radio-wl1273.c
> @@ -0,0 +1,1907 @@
> +/*
> + * Driver for the Texas Instruments WL1273 FM radio.
> + *
> + * Copyright (C) Nokia Corporation
> + * Author: Matti J. Aaltonen
> + *
> + * 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
> + */
> +
> +#undef DEBUG
> +
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +
> +#define DRIVER_DESC "Wl1273 FM Radio - V4L2"
> +
> +#define WL1273_POWER_SET_OFF 0
> +#define WL1273_POWER_SET_FM (1 << 0)
> +#define WL1273_POWER_SET_RDS (1 << 1)
> +#define WL1273_POWER_SET_RETENTION (1 << 4)
> +
> +#define WL1273_PUPD_SET_OFF 0x00
> +#define WL1273_PUPD_SET_ON 0x01
> +#define WL1273_PUPD_SET_RETENTION0x10
> +
> +#define WL1273_FREQ_MULT (1 / 625)
> +#define WL1273_INV_FREQ_MULT (625 / 1)
> +/*
> + * static unsigned char radio_band - Band
> + *
> + * The bands are 0=Japan, 1=USA-Europe. USA-Europe is the default.
> + */
> +static unsigned char radio_band = 1;
> +module_param(radio_band, byte, 0);
> +MODULE_PARM_DESC(radio_band, "Band: 0=Japan, 1=USA-Europe*");
> +
> +/*
> + * static int radio_nr - The number of the radio device
> + *
> + * The default is 0.
> + */
> +static int radio_nr = -1;
> +module_param(radio_nr, int, 0);
> +MODULE_PARM_DESC(radio_nr, "Radio Nr");
> +
> +struct wl1273_device {
> + struct v4l2_device v4l2dev;
> + struct video_device videodev;
> + struct device *dev;
> + struct wl1273_core *core;
> + struct file *owner;
> + char *write_buf;
> + bool rds_on;
> +};
> +
> +static int wl1273_fm_set_tx_freq(struct wl1273_core *core, unsigned int freq)
> +{
> + int r = 0;
> +
> + if (freq < 76000) {
> + dev_err(&core->i2c_dev->dev,
> + "Frequency out of range: %d < %d\n",
> + freq, core->bands[core->band].bottom_frequency);
> + return -EDOM;
> + }
> +
> + if (freq > 108000) {
> + dev_err(&core->i2c_dev->dev,
> + "Frequency out of range: %d > %d\n",
> + freq, core->bands[core->band].top_frequency);
> + return -EDOM;
> + }
> +
> + /*
> + * The driver w
[PATCH v4 4/5] V4L2: WL1273 FM Radio: Controls for the FM radio.
This file implements V4L2 controls for using the Texas Instruments
WL1273 FM Radio.
Signed-off-by: Matti J. Aaltonen
---
drivers/media/radio/Kconfig| 15 +
drivers/media/radio/Makefile |1 +
drivers/media/radio/radio-wl1273.c | 1907
3 files changed, 1923 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/radio/radio-wl1273.c
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 83567b8..209fd37 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -452,4 +452,19 @@ config RADIO_TIMBERDALE
found behind the Timberdale FPGA on the Russellville board.
Enabling this driver will automatically select the DSP and tuner.
+config RADIO_WL1273
+ tristate "Texas Instruments WL1273 I2C FM Radio"
+depends on I2C && VIDEO_V4L2 && SND
+ select FW_LOADER
+ ---help---
+ Choose Y here if you have this FM radio chip.
+
+ In order to control your radio card, you will need to use programs
+ that are compatible with the Video For Linux 2 API. Information on
+ this API and pointers to "v4l2" programs may be found at
+ .
+
+ To compile this driver as a module, choose M here: the
+ module will be called radio-wl1273.
+
endif # RADIO_ADAPTERS
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index f615583..d297074 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -26,5 +26,6 @@ obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o
obj-$(CONFIG_RADIO_SAA7706H) += saa7706h.o
obj-$(CONFIG_RADIO_TEF6862) += tef6862.o
obj-$(CONFIG_RADIO_TIMBERDALE) += radio-timb.o
+obj-$(CONFIG_RADIO_WL1273) += radio-wl1273.o
EXTRA_CFLAGS += -Isound
diff --git a/drivers/media/radio/radio-wl1273.c
b/drivers/media/radio/radio-wl1273.c
new file mode 100644
index 000..473c194
--- /dev/null
+++ b/drivers/media/radio/radio-wl1273.c
@@ -0,0 +1,1907 @@
+/*
+ * Driver for the Texas Instruments WL1273 FM radio.
+ *
+ * Copyright (C) Nokia Corporation
+ * Author: Matti J. Aaltonen
+ *
+ * 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
+ */
+
+#undef DEBUG
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#define DRIVER_DESC "Wl1273 FM Radio - V4L2"
+
+#define WL1273_POWER_SET_OFF 0
+#define WL1273_POWER_SET_FM(1 << 0)
+#define WL1273_POWER_SET_RDS (1 << 1)
+#define WL1273_POWER_SET_RETENTION (1 << 4)
+
+#define WL1273_PUPD_SET_OFF0x00
+#define WL1273_PUPD_SET_ON 0x01
+#define WL1273_PUPD_SET_RETENTION 0x10
+
+#define WL1273_FREQ_MULT (1 / 625)
+#define WL1273_INV_FREQ_MULT (625 / 1)
+/*
+ * static unsigned char radio_band - Band
+ *
+ * The bands are 0=Japan, 1=USA-Europe. USA-Europe is the default.
+ */
+static unsigned char radio_band = 1;
+module_param(radio_band, byte, 0);
+MODULE_PARM_DESC(radio_band, "Band: 0=Japan, 1=USA-Europe*");
+
+/*
+ * static int radio_nr - The number of the radio device
+ *
+ * The default is 0.
+ */
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr, "Radio Nr");
+
+struct wl1273_device {
+ struct v4l2_device v4l2dev;
+ struct video_device videodev;
+ struct device *dev;
+ struct wl1273_core *core;
+ struct file *owner;
+ char *write_buf;
+ bool rds_on;
+};
+
+static int wl1273_fm_set_tx_freq(struct wl1273_core *core, unsigned int freq)
+{
+ int r = 0;
+
+ if (freq < 76000) {
+ dev_err(&core->i2c_dev->dev,
+ "Frequency out of range: %d < %d\n",
+ freq, core->bands[core->band].bottom_frequency);
+ return -EDOM;
+ }
+
+ if (freq > 108000) {
+ dev_err(&core->i2c_dev->dev,
+ "Frequency out of range: %d > %d\n",
+ freq, core->bands[core->band].top_frequency);
+ return -EDOM;
+ }
+
+ /*
+* The driver works better with this msleep,
+* the documentation doesn't mention it.
+*/
+ msleep(5);
+ dev_dbg(&core->i2c_dev->dev, "%s: freq: %d kHz\n", __func__, freq);
+
+ INIT_COMPLETION(core->busy);
+ /* Set the current tx channe
