Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932151AbaAWKgv (ORCPT ); Thu, 23 Jan 2014 05:36:51 -0500 Received: from mail-wg0-f43.google.com ([74.125.82.43]:46395 "EHLO mail-wg0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752816AbaAWKcv (ORCPT ); Thu, 23 Jan 2014 05:32:51 -0500 From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: linus.walleij@linaro.org, dwmw2@infradead.org, linux-mtd@lists.infradead.org, computersforpeace@gmail.com, Angus.Clark@st.com, DCG_UPD_stlinux_kernel@list.st.com, olivier.clergeaud@st.com, Lee Jones Subject: [PATCH RESEND v4 27/37] mtd: st_spi_fsm: Write to Flash via the FSM FIFO Date: Thu, 23 Jan 2014 10:31:15 +0000 Message-Id: <1390473085-24626-28-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1390473085-24626-1-git-send-email-lee.jones@linaro.org> References: <1390473085-24626-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When we write data to the FIFO the FSM Controller subsequently writes that data out to the Serial Flash chip. Signed-off-by: Lee Jones --- drivers/mtd/devices/st_spi_fsm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index b43fed1..c64f741 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -661,6 +661,20 @@ static void stfsm_read_fifo(struct stfsm *fsm, uint32_t *buf, } } +static int stfsm_write_fifo(struct stfsm *fsm, + const uint32_t *buf, const uint32_t size) +{ + uint32_t words = size >> 2; + + dev_dbg(fsm->dev, "writing %d bytes to FIFO\n", size); + + BUG_ON((((uint32_t)buf) & 0x3) || (size & 0x3)); + + writesl(fsm->base + SPI_FAST_SEQ_DATA_REG, buf, words); + + return size; +} + static int stfsm_enter_32bit_addr(struct stfsm *fsm, int enter) { struct stfsm_seq *seq = &stfsm_seq_en_32bit_addr; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/