Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 09249ecd authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
Browse files

staging: fbtft: fb_ssd1306: Refactor write_vmem() 



Refactor write_vmem() for sake of readability.

While here, fix indentation in one comment.

Acked-by: default avatarNoralf Trønnes <noralf@tronnes.org>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 95ecde0f

drivers/staging/fbtft/fb_ssd1306.c

+7 −9
Original line number Diff line number Diff line
@@ -183,26 +183,24 @@ static int set_gamma(struct fbtft_par *par, unsigned long *curves) 
static int write_vmem(struct fbtft_par *par, size_t offset, size_t len)

{

	u16 *vmem16 = (u16 *)par->info->screen_buffer;

	u32 xres = par->info->var.xres;

	u32 yres = par->info->var.yres;

	u8 *buf = par->txbuf.buf;

	int x, y, i;

	int ret = 0;



	for (x = 0; x < par->info->var.xres; x++) {

		for (y = 0; y < par->info->var.yres/8; y++) {

	for (x = 0; x < xres; x++) {

		for (y = 0; y < yres / 8; y++) {

			*buf = 0x00;

			for (i = 0; i < 8; i++)

				*buf |= (vmem16[(y * 8 + i) *

						par->info->var.xres + x] ?

					 1 : 0) << i;

				*buf |= (vmem16[(y * 8 + i) * xres + x] ? 1 : 0) << i;

			buf++;

		}

	}



	/* Write data */

	gpio_set_value(par->gpio.dc, 1);

	ret = par->fbtftops.write(par, par->txbuf.buf,

				  par->info->var.xres * par->info->var.yres /

				  8);

	ret = par->fbtftops.write(par, par->txbuf.buf, xres * yres / 8);

	if (ret < 0)

		dev_err(par->info->device, "write failed and returned: %d\n",

			ret);