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Subject[PATCH 07/14] media: wl128x-radio: convert to platform device
Date
From: Sebastian Reichel <sebastian.reichel@collabora.com>

This converts the wl128x FM radio module into a platform device.
It's a preparation for using it from hci_ll Bluetooth driver instead
of TI_ST.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
drivers/media/radio/wl128x/fmdrv_common.c | 30 ++++++++++++-----------
1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c
index f77acec0addf..9526613adf91 100644
--- a/drivers/media/radio/wl128x/fmdrv_common.c
+++ b/drivers/media/radio/wl128x/fmdrv_common.c
@@ -35,11 +35,10 @@
#include "fmdrv_v4l2.h"
#include "fmdrv_common.h"
#include <linux/ti_wilink_st.h>
+#include <linux/platform_device.h>
#include "fmdrv_rx.h"
#include "fmdrv_tx.h"

-struct fmdev *global_fmdev;
-
/* Region info */
static struct region_info region_configs[] = {
/* Europe/US */
@@ -1615,23 +1614,19 @@ int fmc_release(struct fmdev *fmdev)
return ret;
}

-/*
- * Module init function. Ask FM V4L module to register video device.
- * Allocate memory for FM driver context and RX RDS buffer.
- */
-static int __init fm_drv_init(void)
+static int wl128x_fm_probe(struct platform_device *dev)
{
struct fmdev *fmdev = NULL;
int ret = -ENOMEM;

fmdbg("FM driver\n");

+ /* Allocate memory for FM driver context and RX RDS buffer. */
fmdev = kzalloc(sizeof(struct fmdev), GFP_KERNEL);
if (NULL == fmdev) {
fmerr("Can't allocate operation structure memory\n");
return ret;
}
- global_fmdev = fmdev;
fmdev->rx.rds.buf_size = default_rds_buf * FM_RDS_BLK_SIZE;
fmdev->rx.rds.buff = kzalloc(fmdev->rx.rds.buf_size, GFP_KERNEL);
if (NULL == fmdev->rx.rds.buff) {
@@ -1639,6 +1634,7 @@ static int __init fm_drv_init(void)
goto rel_dev;
}

+ /* Ask FM V4L module to register video device. */
ret = fm_v4l2_init_video_device(fmdev, radio_nr);
if (ret < 0)
goto rel_rdsbuf;
@@ -1657,10 +1653,9 @@ static int __init fm_drv_init(void)
return ret;
}

-/* Module exit function. Ask FM V4L module to unregister video device */
-static void __exit fm_drv_exit(void)
+static int wl128x_fm_remove(struct platform_device *dev)
{
- struct fmdev *fmdev = global_fmdev;
+ struct fmdev *fmdev = platform_get_drvdata(pdev);

/* Ask FM V4L module to unregister video device */
fm_v4l2_deinit_video_device(fmdev);
@@ -1668,12 +1663,19 @@ static void __exit fm_drv_exit(void)
kfree(fmdev->rx.rds.buff);
kfree(fmdev);
}
+
+ return 0;
}

-module_init(fm_drv_init);
-module_exit(fm_drv_exit);
+static struct platform_driver wl128x_fm_drv = {
+ .driver = {
+ .name = "wl128x-fm",
+ },
+ .probe = wl128x_fm_probe,
+ .remove = wl128x_fm_remove,
+};
+module_platform_driver(wl128x_fm_drv);

-/* ------------- Module Info ------------- */
MODULE_AUTHOR("Manjunatha Halli <manjunatha_halli@ti.com>");
MODULE_DESCRIPTION("FM Driver for TI's Connectivity chip");
MODULE_LICENSE("GPL");
--
2.19.2
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