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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2017-11-29 14:02:22 -0500
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-11-30 04:19:05 -0500
commitbe9b53c83792e3898755dce90f8c632d40e7c83e (patch)
tree627ed2c0c7557f5a1da416b71d2c06883647d5ea /drivers/media/dvb-frontends
parente61edeb155ca20cf30009196738d4a7a8365ac9f (diff)
media: dvb-frontends: complete kernel-doc markups
For the dvb-frontends that are now part of the documentation, complete the kernel-doc markups, in order for them to be properly used at the driver's kAPI documentation. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/dvb-frontends')
-rw-r--r--drivers/media/dvb-frontends/af9013.h24
-rw-r--r--drivers/media/dvb-frontends/ascot2e.h9
-rw-r--r--drivers/media/dvb-frontends/cxd2820r.h24
-rw-r--r--drivers/media/dvb-frontends/drxk.h8
-rw-r--r--drivers/media/dvb-frontends/dvb-pll.h2
-rw-r--r--drivers/media/dvb-frontends/helene.h29
-rw-r--r--drivers/media/dvb-frontends/horus3a.h9
-rw-r--r--drivers/media/dvb-frontends/ix2505v.h17
-rw-r--r--drivers/media/dvb-frontends/m88ds3103.h155
-rw-r--r--drivers/media/dvb-frontends/mb86a20s.h17
-rw-r--r--drivers/media/dvb-frontends/rtl2830.h1
-rw-r--r--drivers/media/dvb-frontends/rtl2832.h1
-rw-r--r--drivers/media/dvb-frontends/stb6000.h2
-rw-r--r--drivers/media/dvb-frontends/tda10071.h1
-rw-r--r--drivers/media/dvb-frontends/zd1301_demod.h6
15 files changed, 177 insertions, 128 deletions
diff --git a/drivers/media/dvb-frontends/af9013.h b/drivers/media/dvb-frontends/af9013.h
index 353274524f1b..a290722c04fd 100644
--- a/drivers/media/dvb-frontends/af9013.h
+++ b/drivers/media/dvb-frontends/af9013.h
@@ -38,6 +38,13 @@
* @api_version: Firmware API version.
* @gpio: GPIOs.
* @get_dvb_frontend: Get DVB frontend callback.
+ *
+ * AF9013/5 GPIOs (mostly guessed):
+ * * demod#1-gpio#0 - set demod#2 i2c-addr for dual devices
+ * * demod#1-gpio#1 - xtal setting (?)
+ * * demod#1-gpio#3 - tuner#1
+ * * demod#2-gpio#0 - tuner#2
+ * * demod#2-gpio#1 - xtal setting (?)
*/
struct af9013_platform_data {
/*
@@ -89,16 +96,15 @@ struct af9013_platform_data {
#define AF9013_TS_PARALLEL AF9013_TS_MODE_PARALLEL
#define AF9013_TS_SERIAL AF9013_TS_MODE_SERIAL
-/*
- * AF9013/5 GPIOs (mostly guessed)
- * demod#1-gpio#0 - set demod#2 i2c-addr for dual devices
- * demod#1-gpio#1 - xtal setting (?)
- * demod#1-gpio#3 - tuner#1
- * demod#2-gpio#0 - tuner#2
- * demod#2-gpio#1 - xtal setting (?)
- */
-
#if IS_REACHABLE(CONFIG_DVB_AF9013)
+/**
+ * Attach an af9013 demod
+ *
+ * @config: pointer to &struct af9013_config with demod configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *af9013_attach(const struct af9013_config *config,
struct i2c_adapter *i2c);
#else
diff --git a/drivers/media/dvb-frontends/ascot2e.h b/drivers/media/dvb-frontends/ascot2e.h
index dc61bf7d1b09..418c565baf83 100644
--- a/drivers/media/dvb-frontends/ascot2e.h
+++ b/drivers/media/dvb-frontends/ascot2e.h
@@ -41,6 +41,15 @@ struct ascot2e_config {
};
#if IS_REACHABLE(CONFIG_DVB_ASCOT2E)
+/**
+ * Attach an ascot2e tuner
+ *
+ * @fe: frontend to be attached
+ * @config: pointer to &struct ascot2e_config with tuner configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
const struct ascot2e_config *config,
struct i2c_adapter *i2c);
diff --git a/drivers/media/dvb-frontends/cxd2820r.h b/drivers/media/dvb-frontends/cxd2820r.h
index f3ff8f6eb3bb..a49400c0e28e 100644
--- a/drivers/media/dvb-frontends/cxd2820r.h
+++ b/drivers/media/dvb-frontends/cxd2820r.h
@@ -49,7 +49,6 @@
* @gpio_chip_base: GPIO.
* @get_dvb_frontend: Get DVB frontend.
*/
-
struct cxd2820r_platform_data {
u8 ts_mode;
bool ts_clk_inv;
@@ -62,6 +61,17 @@ struct cxd2820r_platform_data {
bool attach_in_use;
};
+/**
+ * struct cxd2820r_config - configuration for cxd2020r demod
+ *
+ * @i2c_address: Demodulator I2C address. Driver determines DVB-C slave I2C
+ * address automatically from master address.
+ * Default: none, must set. Values: 0x6c, 0x6d.
+ * @ts_mode: TS output mode. Default: none, must set. Values: FIXME?
+ * @ts_clock_inv: TS clock inverted. Default: 0. Values: 0, 1.
+ * @if_agc_polarity: Default: 0. Values: 0, 1
+ * @spec_inv: Spectrum inversion. Default: 0. Values: 0, 1.
+ */
struct cxd2820r_config {
/* Demodulator I2C address.
* Driver determines DVB-C slave I2C address automatically from master
@@ -98,6 +108,18 @@ struct cxd2820r_config {
#if IS_REACHABLE(CONFIG_DVB_CXD2820R)
+/**
+ * Attach a cxd2820r demod
+ *
+ * @config: pointer to &struct cxd2820r_config with demod configuration.
+ * @i2c: i2c adapter to use.
+ * @gpio_chip_base: if zero, disables GPIO setting. Otherwise, if
+ * CONFIG_GPIOLIB is set dynamically allocate
+ * gpio base; if is not set, use its value to
+ * setup the GPIO pins.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *cxd2820r_attach(
const struct cxd2820r_config *config,
struct i2c_adapter *i2c,
diff --git a/drivers/media/dvb-frontends/drxk.h b/drivers/media/dvb-frontends/drxk.h
index c936142367fb..b16fedbb53a3 100644
--- a/drivers/media/dvb-frontends/drxk.h
+++ b/drivers/media/dvb-frontends/drxk.h
@@ -53,6 +53,14 @@ struct drxk_config {
};
#if IS_REACHABLE(CONFIG_DVB_DRXK)
+/**
+ * Attach a drxk demod
+ *
+ * @config: pointer to &struct drxk_config with demod configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *drxk_attach(const struct drxk_config *config,
struct i2c_adapter *i2c);
#else
diff --git a/drivers/media/dvb-frontends/dvb-pll.h b/drivers/media/dvb-frontends/dvb-pll.h
index 01dbcc4d9550..212e0730f154 100644
--- a/drivers/media/dvb-frontends/dvb-pll.h
+++ b/drivers/media/dvb-frontends/dvb-pll.h
@@ -30,6 +30,7 @@
#define DVB_PLL_TDEE4 18
#define DVB_PLL_THOMSON_DTT7520X 19
+#if IS_REACHABLE(CONFIG_DVB_PLL)
/**
* Attach a dvb-pll to the supplied frontend structure.
*
@@ -40,7 +41,6 @@
*
* return: Frontend pointer on success, NULL on failure
*/
-#if IS_REACHABLE(CONFIG_DVB_PLL)
extern struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe,
int pll_addr,
struct i2c_adapter *i2c,
diff --git a/drivers/media/dvb-frontends/helene.h b/drivers/media/dvb-frontends/helene.h
index 3f504f5d1d4f..c9fc81c7e4e7 100644
--- a/drivers/media/dvb-frontends/helene.h
+++ b/drivers/media/dvb-frontends/helene.h
@@ -49,9 +49,31 @@ struct helene_config {
};
#if IS_REACHABLE(CONFIG_DVB_HELENE)
+/**
+ * Attach a helene tuner (terrestrial and cable standards)
+ *
+ * @fe: frontend to be attached
+ * @config: pointer to &struct helene_config with tuner configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c);
+
+/**
+ * Attach a helene tuner (satellite standards)
+ *
+ * @fe: frontend to be attached
+ * @config: pointer to &struct helene_config with tuner configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
+extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
+ const struct helene_config *config,
+ struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
const struct helene_config *config,
@@ -60,13 +82,6 @@ static inline struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
pr_warn("%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
-#endif
-
-#if IS_REACHABLE(CONFIG_DVB_HELENE)
-extern struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
- const struct helene_config *config,
- struct i2c_adapter *i2c);
-#else
static inline struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c)
diff --git a/drivers/media/dvb-frontends/horus3a.h b/drivers/media/dvb-frontends/horus3a.h
index 672a556df71a..9157fd037e2f 100644
--- a/drivers/media/dvb-frontends/horus3a.h
+++ b/drivers/media/dvb-frontends/horus3a.h
@@ -41,6 +41,15 @@ struct horus3a_config {
};
#if IS_REACHABLE(CONFIG_DVB_HORUS3A)
+/**
+ * Attach a horus3a tuner
+ *
+ * @fe: frontend to be attached
+ * @config: pointer to &struct helene_config with tuner configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
const struct horus3a_config *config,
struct i2c_adapter *i2c);
diff --git a/drivers/media/dvb-frontends/ix2505v.h b/drivers/media/dvb-frontends/ix2505v.h
index 31ca03a7b827..49ed93e754ed 100644
--- a/drivers/media/dvb-frontends/ix2505v.h
+++ b/drivers/media/dvb-frontends/ix2505v.h
@@ -19,19 +19,20 @@
#include <linux/i2c.h>
#include "dvb_frontend.h"
+/**
+ * struct ix2505v_config - ix2505 attachment configuration
+ *
+ * @tuner_address: tuner address
+ * @tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB
+ * @tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default)
+ * @min_delay_ms: delay after tune
+ * @tuner_write_only: disables reads
+ */
struct ix2505v_config {
u8 tuner_address;
-
- /*Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB */
u8 tuner_gain;
-
- /*Charge pump output +/- 0=120 1=260 2=555 3=1200(default) */
u8 tuner_chargepump;
-
- /* delay after tune */
int min_delay_ms;
-
- /* disables reads*/
u8 tuner_write_only;
};
diff --git a/drivers/media/dvb-frontends/m88ds3103.h b/drivers/media/dvb-frontends/m88ds3103.h
index 04b355a005fb..1a8964a2265d 100644
--- a/drivers/media/dvb-frontends/m88ds3103.h
+++ b/drivers/media/dvb-frontends/m88ds3103.h
@@ -25,6 +25,34 @@
*/
/**
+ * enum m88ds3103_ts_mode - TS connection mode
+ * @M88DS3103_TS_SERIAL: TS output pin D0, normal
+ * @M88DS3103_TS_SERIAL_D7: TS output pin D7
+ * @M88DS3103_TS_PARALLEL: TS Parallel mode
+ * @M88DS3103_TS_CI: TS CI Mode
+ */
+enum m88ds3103_ts_mode {
+ M88DS3103_TS_SERIAL,
+ M88DS3103_TS_SERIAL_D7,
+ M88DS3103_TS_PARALLEL,
+ M88DS3103_TS_CI
+};
+
+/**
+ * enum m88ds3103_clock_out
+ * @M88DS3103_CLOCK_OUT_DISABLED: Clock output is disabled
+ * @M88DS3103_CLOCK_OUT_ENABLED: Clock output is enabled with crystal
+ * clock.
+ * @M88DS3103_CLOCK_OUT_ENABLED_DIV2: Clock output is enabled with half
+ * crystal clock.
+ */
+enum m88ds3103_clock_out {
+ M88DS3103_CLOCK_OUT_DISABLED,
+ M88DS3103_CLOCK_OUT_ENABLED,
+ M88DS3103_CLOCK_OUT_ENABLED_DIV2
+};
+
+/**
* struct m88ds3103_platform_data - Platform data for the m88ds3103 driver
* @clk: Clock frequency.
* @i2c_wr_max: Max bytes I2C adapter can write at once.
@@ -44,24 +72,16 @@
* @get_dvb_frontend: Get DVB frontend.
* @get_i2c_adapter: Get I2C adapter.
*/
-
struct m88ds3103_platform_data {
u32 clk;
u16 i2c_wr_max;
-#define M88DS3103_TS_SERIAL 0 /* TS output pin D0, normal */
-#define M88DS3103_TS_SERIAL_D7 1 /* TS output pin D7 */
-#define M88DS3103_TS_PARALLEL 2 /* TS Parallel mode */
-#define M88DS3103_TS_CI 3 /* TS CI Mode */
- u8 ts_mode:2;
+ enum m88ds3103_ts_mode ts_mode;
u32 ts_clk;
+ enum m88ds3103_clock_out clk_out;
u8 ts_clk_pol:1;
u8 spec_inv:1;
u8 agc;
u8 agc_inv:1;
-#define M88DS3103_CLOCK_OUT_DISABLED 0
-#define M88DS3103_CLOCK_OUT_ENABLED 1
-#define M88DS3103_CLOCK_OUT_ENABLED_DIV2 2
- u8 clk_out:2;
u8 envelope_mode:1;
u8 lnb_hv_pol:1;
u8 lnb_en_pol:1;
@@ -73,105 +93,60 @@ struct m88ds3103_platform_data {
u8 attach_in_use:1;
};
-/*
- * Do not add new m88ds3103_attach() users! Use I2C bindings instead.
+/**
+ * struct m88ds3103_config - m88ds3102 configuration
+ *
+ * @i2c_addr: I2C address. Default: none, must set. Example: 0x68, ...
+ * @clock: Device's clock. Default: none, must set. Example: 27000000
+ * @i2c_wr_max: Max bytes I2C provider is asked to write at once.
+ * Default: none, must set. Example: 33, 65, ...
+ * @ts_mode: TS output mode, as defined by &enum m88ds3103_ts_mode.
+ * Default: M88DS3103_TS_SERIAL.
+ * @ts_clk: TS clk in KHz. Default: 0.
+ * @ts_clk_pol: TS clk polarity.Default: 0.
+ * 1-active at falling edge; 0-active at rising edge.
+ * @spec_inv: Spectrum inversion. Default: 0.
+ * @agc_inv: AGC polarity. Default: 0.
+ * @clock_out: Clock output, as defined by &enum m88ds3103_clock_out.
+ * Default: M88DS3103_CLOCK_OUT_DISABLED.
+ * @envelope_mode: DiSEqC envelope mode. Default: 0.
+ * @agc: AGC configuration. Default: none, must set.
+ * @lnb_hv_pol: LNB H/V pin polarity. Default: 0. Values:
+ * 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18;
+ * 0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13.
+ * @lnb_en_pol: LNB enable pin polarity. Default: 0. Values:
+ * 1: pin high to enable, pin low to disable;
+ * 0: pin high to disable, pin low to enable.
*/
struct m88ds3103_config {
- /*
- * I2C address
- * Default: none, must set
- * 0x68, ...
- */
u8 i2c_addr;
-
- /*
- * clock
- * Default: none, must set
- * 27000000
- */
u32 clock;
-
- /*
- * max bytes I2C provider is asked to write at once
- * Default: none, must set
- * 33, 65, ...
- */
u16 i2c_wr_max;
-
- /*
- * TS output mode
- * Default: M88DS3103_TS_SERIAL
- */
-#define M88DS3103_TS_SERIAL 0 /* TS output pin D0, normal */
-#define M88DS3103_TS_SERIAL_D7 1 /* TS output pin D7 */
-#define M88DS3103_TS_PARALLEL 2 /* TS Parallel mode */
-#define M88DS3103_TS_CI 3 /* TS CI Mode */
u8 ts_mode;
-
- /*
- * TS clk in KHz
- * Default: 0.
- */
u32 ts_clk;
-
- /*
- * TS clk polarity.
- * Default: 0. 1-active at falling edge; 0-active at rising edge.
- */
u8 ts_clk_pol:1;
-
- /*
- * spectrum inversion
- * Default: 0
- */
u8 spec_inv:1;
-
- /*
- * AGC polarity
- * Default: 0
- */
u8 agc_inv:1;
-
- /*
- * clock output
- * Default: M88DS3103_CLOCK_OUT_DISABLED
- */
-#define M88DS3103_CLOCK_OUT_DISABLED 0
-#define M88DS3103_CLOCK_OUT_ENABLED 1
-#define M88DS3103_CLOCK_OUT_ENABLED_DIV2 2
u8 clock_out;
-
- /*
- * DiSEqC envelope mode
- * Default: 0
- */
u8 envelope_mode:1;
-
- /*
- * AGC configuration
- * Default: none, must set
- */
u8 agc;
-
- /*
- * LNB H/V pin polarity
- * Default: 0.
- * 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18.
- * 0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13.
- */
u8 lnb_hv_pol:1;
-
- /*
- * LNB enable pin polarity
- * Default: 0.
- * 1: pin high to enable, pin low to disable.
- * 0: pin high to disable, pin low to enable.
- */
u8 lnb_en_pol:1;
};
#if defined(CONFIG_DVB_M88DS3103) || \
(defined(CONFIG_DVB_M88DS3103_MODULE) && defined(MODULE))
+/**
+ * Attach a m88ds3103 demod
+ *
+ * @config: pointer to &struct m88ds3103_config with demod configuration.
+ * @i2c: i2c adapter to use.
+ * @tuner_i2c: on success, returns the I2C adapter associated with
+ * m88ds3103 tuner.
+ *
+ * return: FE pointer on success, NULL on failure.
+ * Note: Do not add new m88ds3103_attach() users! Use I2C bindings instead.
+ */
extern struct dvb_frontend *m88ds3103_attach(
const struct m88ds3103_config *config,
struct i2c_adapter *i2c,
diff --git a/drivers/media/dvb-frontends/mb86a20s.h b/drivers/media/dvb-frontends/mb86a20s.h
index dfb02db2126c..05c9725d1c5f 100644
--- a/drivers/media/dvb-frontends/mb86a20s.h
+++ b/drivers/media/dvb-frontends/mb86a20s.h
@@ -26,7 +26,6 @@
* @demod_address: the demodulator's i2c address
* @is_serial: if true, TS is serial. Otherwise, TS is parallel
*/
-
struct mb86a20s_config {
u32 fclk;
u8 demod_address;
@@ -34,9 +33,17 @@ struct mb86a20s_config {
};
#if IS_REACHABLE(CONFIG_DVB_MB86A20S)
+/**
+ * Attach a mb86a20s demod
+ *
+ * @config: pointer to &struct mb86a20s_config with demod configuration.
+ * @i2c: i2c adapter to use.
+ *
+ * return: FE pointer on success, NULL on failure.
+ */
extern struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
struct i2c_adapter *i2c);
-extern struct i2c_adapter *mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *);
+
#else
static inline struct dvb_frontend *mb86a20s_attach(
const struct mb86a20s_config *config, struct i2c_adapter *i2c)
@@ -44,12 +51,6 @@ static inline struct dvb_frontend *mb86a20s_attach(
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
-static inline struct i2c_adapter *
- mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *fe)
-{
- printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
- return NULL;
-}
#endif
#endif /* MB86A20S */
diff --git a/drivers/media/dvb-frontends/rtl2830.h b/drivers/media/dvb-frontends/rtl2830.h
index 0cde151e6608..458ac94e8a8b 100644
--- a/drivers/media/dvb-frontends/rtl2830.h
+++ b/drivers/media/dvb-frontends/rtl2830.h
@@ -32,7 +32,6 @@
* @pid_filter: Set PID to PID filter.
* @pid_filter_ctrl: Control PID filter.
*/
-
struct rtl2830_platform_data {
u32 clk;
bool spec_inv;
diff --git a/drivers/media/dvb-frontends/rtl2832.h b/drivers/media/dvb-frontends/rtl2832.h
index 03c0de039fa9..6a124ff71c2b 100644
--- a/drivers/media/dvb-frontends/rtl2832.h
+++ b/drivers/media/dvb-frontends/rtl2832.h
@@ -35,7 +35,6 @@
* @pid_filter: Set PID to PID filter.
* @pid_filter_ctrl: Control PID filter.
*/
-
struct rtl2832_platform_data {
u32 clk;
/*
diff --git a/drivers/media/dvb-frontends/stb6000.h b/drivers/media/dvb-frontends/stb6000.h
index 3c4d51dd5415..e94a3d5facf6 100644
--- a/drivers/media/dvb-frontends/stb6000.h
+++ b/drivers/media/dvb-frontends/stb6000.h
@@ -26,6 +26,7 @@
#include <linux/i2c.h>
#include "dvb_frontend.h"
+#if IS_REACHABLE(CONFIG_DVB_STB6000)
/**
* Attach a stb6000 tuner to the supplied frontend structure.
*
@@ -35,7 +36,6 @@
*
* return: FE pointer on success, NULL on failure.
*/
-#if IS_REACHABLE(CONFIG_DVB_STB6000)
extern struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, int addr,
struct i2c_adapter *i2c);
#else
diff --git a/drivers/media/dvb-frontends/tda10071.h b/drivers/media/dvb-frontends/tda10071.h
index 8f184026ee11..da1a87bc1603 100644
--- a/drivers/media/dvb-frontends/tda10071.h
+++ b/drivers/media/dvb-frontends/tda10071.h
@@ -38,7 +38,6 @@
* @tuner_i2c_addr: CX24118A tuner I2C address (0x14, 0x54, ...).
* @get_dvb_frontend: Get DVB frontend.
*/
-
struct tda10071_platform_data {
u32 clk;
u16 i2c_wr_max;
diff --git a/drivers/media/dvb-frontends/zd1301_demod.h b/drivers/media/dvb-frontends/zd1301_demod.h
index 9496f7e8b4dd..6cd8f6f9c415 100644
--- a/drivers/media/dvb-frontends/zd1301_demod.h
+++ b/drivers/media/dvb-frontends/zd1301_demod.h
@@ -52,6 +52,12 @@ struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *pdev);
#else
+/**
+ * zd1301_demod_get_dvb_frontend() - Attach a zd1301 frontend
+ * @dev: Pointer to platform device
+ *
+ * Return: Pointer to %struct dvb_frontend or NULL if attach fails.
+ */
static inline struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *dev)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);