From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Svensson Date: Wed, 07 Oct 2015 07:20:14 +0000 Subject: [PATCH v3 3/3] staging: fbtft: access screen buffer directly Message-Id: <1444202414-21271-3-git-send-email-lars1.svensson@sonymobile.com> List-Id: References: <1444202414-21271-1-git-send-email-lars1.svensson@sonymobile.com> In-Reply-To: <1444202414-21271-1-git-send-email-lars1.svensson@sonymobile.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: thomas.petazzoni@free-electrons.com, noralf@tronnes.org, plagnioj@jcrosoft.com, tomi.valkeinen@ti.com Cc: linux-fbdev@vger.kernel.org, gregkh@linuxfoundation.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, dan.carpenter@oracle.com, Lars Svensson In fbtft-bus.c:fbtft_write_vmem16_bus9(), ioread8() is used for accessing the provided screen array. Since screen_buffer actually points to an ordinary buffer, instead access it directly. Signed-off-by: Lars Svensson --- drivers/staging/fbtft/fbtft-bus.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/staging/fbtft/fbtft-bus.c b/drivers/staging/fbtft/fbtft-bus.c index f5a36a4..04efe90 100644 --- a/drivers/staging/fbtft/fbtft-bus.c +++ b/drivers/staging/fbtft/fbtft-bus.c @@ -184,7 +184,7 @@ EXPORT_SYMBOL(fbtft_write_vmem16_bus8); /* 16 bit pixel over 9-bit SPI bus: dc + high byte, dc + low byte */ int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len) { - u8 __iomem *vmem8; + u8 *vmem8; u16 *txbuf16 = par->txbuf.buf; size_t remain; size_t to_copy; @@ -212,12 +212,12 @@ int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len) #ifdef __LITTLE_ENDIAN for (i = 0; i < to_copy; i += 2) { - txbuf16[i] = 0x0100 | ioread8(vmem8 + i + 1); - txbuf16[i + 1] = 0x0100 | ioread8(vmem8 + i); + txbuf16[i] = 0x0100 | vmem8[i + 1]; + txbuf16[i + 1] = 0x0100 | vmem8[i]; } #else for (i = 0; i < to_copy; i++) - txbuf16[i] = 0x0100 | ioread8(vmem8 + i); + txbuf16[i] = 0x0100 | vmem8[i]; #endif vmem8 = vmem8 + to_copy; ret = par->fbtftops.write(par, par->txbuf.buf, to_copy*2); -- 2.4.2