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staging: fbtft: add helper fbtft_write_buf_dc 

Factor out setting DC GPIO and writing buffer content to helper
fbtft_write_buf_dc.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heiner Kallweit 2017-03-02 22:12:46 +01:00 committed by Greg Kroah-Hartman
parent 82472b8618
commit 60da70204e
2 changed files with 16 additions and 0 deletions
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15
drivers/staging/fbtft/fbtft-core.c
View File

@ -43,6 +43,21 @@ static unsigned long debug;
module_param(debug, ulong, 0000);
MODULE_PARM_DESC(debug, "override device debug level");
int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc)
{
int ret;
if (gpio_is_valid(par->gpio.dc))
gpio_set_value(par->gpio.dc, dc);
ret = par->fbtftops.write(par, buf, len);
if (ret < 0)
dev_err(par->info->device,
"write() failed and returned %d\n", ret);
return ret;
}
EXPORT_SYMBOL(fbtft_write_buf_dc);
void fbtft_dbg_hex(const struct device *dev, int groupsize,
void *buf, size_t len, const char *fmt, ...)
{

1
drivers/staging/fbtft/fbtft.h
View File

@ -248,6 +248,7 @@ struct fbtft_par {
par->fbtftops.write_register(par, NUMARGS(__VA_ARGS__), __VA_ARGS__)
/* fbtft-core.c */
int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc);
void fbtft_dbg_hex(const struct device *dev, int groupsize,
void *buf, size_t len, const char *fmt, ...);
struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,