From patchwork Fri Dec 6 14:24:46 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Poddar, Sourav" X-Patchwork-Id: 298029 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (unknown [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id E2CAA2C0095 for ; Sat, 7 Dec 2013 01:26:40 +1100 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VowM5-0005MU-Bc; Fri, 06 Dec 2013 14:26:09 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VowLu-0007QJ-7n; Fri, 06 Dec 2013 14:25:58 +0000 Received: from comal.ext.ti.com ([198.47.26.152]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VowLm-0007Jq-Ce for linux-mtd@lists.infradead.org; Fri, 06 Dec 2013 14:25:51 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id rB6EPMPA004185; Fri, 6 Dec 2013 08:25:22 -0600 Received: from DLEE70.ent.ti.com (dlemailx.itg.ti.com [157.170.170.113]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id rB6EPLmx015680; Fri, 6 Dec 2013 08:25:21 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.2.342.3; Fri, 6 Dec 2013 08:25:21 -0600 Received: from a0131647.apr.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id rB6EOqhB000982; Fri, 6 Dec 2013 08:25:18 -0600 From: Sourav Poddar To: , , , Subject: [PATCHv2 05/10] spi/qspi: Add api for get_buf/put_buf. Date: Fri, 6 Dec 2013 19:54:46 +0530 Message-ID: <1386339891-32717-6-git-send-email-sourav.poddar@ti.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1386339891-32717-1-git-send-email-sourav.poddar@ti.com> References: <1386339891-32717-1-git-send-email-sourav.poddar@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131206_092550_594922_19C6DB88 X-CRM114-Status: UNSURE ( 9.32 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -7.1 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.152 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.2 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: devicetree@vger.kernel.org, balbi@ti.com, linux-mtd@lists.infradead.org, bcousson@baylibre.com, Sourav Poddar , linux-omap@vger.kernel.org, dwmw2@infradead.org X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Adapt qspi driver to use (get_buf/put_buf) pointers added earlier. These can be called just before the memcpy operations to get hold of the memory mapped address and to turn on the controller clocks. Signed-off-by: Sourav Poddar --- v1->v2: enable/disable memory mapped only when get_buf/put_buf is called (basicaaly only when memory mapped read operation is desired). drivers/spi/spi-ti-qspi.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index e4a8afc..b83583c 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -248,6 +248,23 @@ static void ti_qspi_configure_from_slave(struct spi_device *spi) ti_qspi_write(qspi, memval, QSPI_SPI_SETUP0_REG); } +static inline int __iomem *ti_qspi_get_mem_buf(struct spi_master *master) +{ + struct ti_qspi *qspi = spi_master_get_devdata(master); + + pm_runtime_get_sync(qspi->dev); + enable_qspi_memory_mapped(qspi); + return qspi->mmap_base; +} + +static void ti_qspi_put_mem_buf(struct spi_master *master) +{ + struct ti_qspi *qspi = spi_master_get_devdata(master); + + disable_qspi_memory_mapped(qspi); + pm_runtime_put(qspi->dev); +} + static void ti_qspi_restore_ctx(struct ti_qspi *qspi) { struct ti_qspi_regs *ctx_reg = &qspi->ctx_reg; @@ -517,6 +534,8 @@ static int ti_qspi_probe(struct platform_device *pdev) master->bits_per_word_mask = BIT(32 - 1) | BIT(16 - 1) | BIT(8 - 1); master->mmap = true; master->configure_from_slave = ti_qspi_configure_from_slave; + master->get_buf = ti_qspi_get_mem_buf; + master->put_buf = ti_qspi_put_mem_buf; if (!of_property_read_u32(np, "num-cs", &num_cs)) master->num_chipselect = num_cs;