[PATCH v2 2/3] drm/tiny/gm12u320: Retrieve USB device from struct drm_device.dev
Daniel Vetter
daniel at ffwll.ch
Tue Nov 3 10:56:13 UTC 2020
On Tue, Nov 03, 2020 at 11:36:55AM +0100, Thomas Zimmermann wrote:
> Drop the driver's udev field in favor of struct drm_device.dev. No
> functional changes made.
>
> v2:
> * upcast dev with drm_dev_get_usb_device()
>
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
With the static inline helper either moved to gm12u320.c code or into usb
code this here is
Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/tiny/gm12u320.c | 52 +++++++++++++++------------------
> 1 file changed, 24 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
> index cc397671f689..414f08c0bab9 100644
> --- a/drivers/gpu/drm/tiny/gm12u320.c
> +++ b/drivers/gpu/drm/tiny/gm12u320.c
> @@ -23,6 +23,7 @@
> #include <drm/drm_modeset_helper_vtables.h>
> #include <drm/drm_probe_helper.h>
> #include <drm/drm_simple_kms_helper.h>
> +#include <drm/drm_usb_helper.h>
>
> static bool eco_mode;
> module_param(eco_mode, bool, 0644);
> @@ -45,7 +46,7 @@ MODULE_PARM_DESC(eco_mode, "Turn on Eco mode (less bright, more silent)");
> #define GM12U320_BLOCK_COUNT 20
>
> #define GM12U320_ERR(fmt, ...) \
> - DRM_DEV_ERROR(&gm12u320->udev->dev, fmt, ##__VA_ARGS__)
> + DRM_DEV_ERROR(gm12u320->dev.dev, fmt, ##__VA_ARGS__)
>
> #define MISC_RCV_EPT 1
> #define DATA_RCV_EPT 2
> @@ -85,7 +86,6 @@ struct gm12u320_device {
> struct drm_device dev;
> struct drm_simple_display_pipe pipe;
> struct drm_connector conn;
> - struct usb_device *udev;
> unsigned char *cmd_buf;
> unsigned char *data_buf[GM12U320_BLOCK_COUNT];
> struct {
> @@ -191,6 +191,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
> u8 req_a, u8 req_b,
> u8 arg_a, u8 arg_b, u8 arg_c, u8 arg_d)
> {
> + struct usb_device *udev = drm_dev_get_usb_device(&gm12u320->dev);
> int ret, len;
>
> memcpy(gm12u320->cmd_buf, &cmd_misc, CMD_SIZE);
> @@ -202,8 +203,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
> gm12u320->cmd_buf[25] = arg_d;
>
> /* Send request */
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_sndbulkpipe(gm12u320->udev, MISC_SND_EPT),
> + ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, MISC_SND_EPT),
> gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
> if (ret || len != CMD_SIZE) {
> GM12U320_ERR("Misc. req. error %d\n", ret);
> @@ -211,8 +211,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
> }
>
> /* Read value */
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
> + ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, MISC_RCV_EPT),
> gm12u320->cmd_buf, MISC_VALUE_SIZE, &len,
> DATA_TIMEOUT);
> if (ret || len != MISC_VALUE_SIZE) {
> @@ -222,8 +221,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
> /* cmd_buf[0] now contains the read value, which we don't use */
>
> /* Read status */
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
> + ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, MISC_RCV_EPT),
> gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
> CMD_TIMEOUT);
> if (ret || len != READ_STATUS_SIZE) {
> @@ -331,6 +329,7 @@ static void gm12u320_fb_update_work(struct work_struct *work)
> struct gm12u320_device *gm12u320 =
> container_of(to_delayed_work(work), struct gm12u320_device,
> fb_update.work);
> + struct usb_device *udev = drm_dev_get_usb_device(&gm12u320->dev);
> int block, block_size, len;
> int ret = 0;
>
> @@ -350,43 +349,41 @@ static void gm12u320_fb_update_work(struct work_struct *work)
> gm12u320->cmd_buf[21] =
> block | (gm12u320->fb_update.frame << 7);
>
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
> - gm12u320->cmd_buf, CMD_SIZE, &len,
> - CMD_TIMEOUT);
> + ret = usb_bulk_msg(udev,
> + usb_sndbulkpipe(udev, DATA_SND_EPT),
> + gm12u320->cmd_buf, CMD_SIZE, &len,
> + CMD_TIMEOUT);
> if (ret || len != CMD_SIZE)
> goto err;
>
> /* Send data block to device */
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
> - gm12u320->data_buf[block], block_size,
> - &len, DATA_TIMEOUT);
> + ret = usb_bulk_msg(udev,
> + usb_sndbulkpipe(udev, DATA_SND_EPT),
> + gm12u320->data_buf[block], block_size,
> + &len, DATA_TIMEOUT);
> if (ret || len != block_size)
> goto err;
>
> /* Read status */
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
> - gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
> - CMD_TIMEOUT);
> + ret = usb_bulk_msg(udev,
> + usb_rcvbulkpipe(udev, DATA_RCV_EPT),
> + gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
> + CMD_TIMEOUT);
> if (ret || len != READ_STATUS_SIZE)
> goto err;
> }
>
> /* Send draw command to device */
> memcpy(gm12u320->cmd_buf, cmd_draw, CMD_SIZE);
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
> - gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
> + ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, DATA_SND_EPT),
> + gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
> if (ret || len != CMD_SIZE)
> goto err;
>
> /* Read status */
> - ret = usb_bulk_msg(gm12u320->udev,
> - usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
> - gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
> - gm12u320->fb_update.draw_status_timeout);
> + ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, DATA_RCV_EPT),
> + gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
> + gm12u320->fb_update.draw_status_timeout);
> if (ret || len != READ_STATUS_SIZE)
> goto err;
>
> @@ -638,7 +635,6 @@ static int gm12u320_usb_probe(struct usb_interface *interface,
> if (IS_ERR(gm12u320))
> return PTR_ERR(gm12u320);
>
> - gm12u320->udev = interface_to_usbdev(interface);
> INIT_DELAYED_WORK(&gm12u320->fb_update.work, gm12u320_fb_update_work);
> mutex_init(&gm12u320->fb_update.lock);
>
> --
> 2.29.0
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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