From patchwork Thu Sep 20 12:09:10 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lee Jones X-Patchwork-Id: 11531 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id C29661B4E38 for ; Thu, 20 Sep 2012 12:09:30 +0000 (UTC) Received: from mail-iy0-f180.google.com (mail-iy0-f180.google.com [209.85.210.180]) by fiordland.canonical.com (Postfix) with ESMTP id DEBD03D098E3 for ; Thu, 20 Sep 2012 12:09:29 +0000 (UTC) Received: by iafj25 with SMTP id j25so1559381iaf.11 for ; Thu, 20 Sep 2012 05:09:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-forwarded-to:x-forwarded-for:delivered-to:received-spf:from:to:cc :subject:date:message-id:x-mailer:in-reply-to:references :x-gm-message-state; bh=B/epbuXganPNppIvoNN4V9WnW2XX7Yv1PzzhEvTtCIE=; b=Vsur/nt0FWNtNpvAHn25ZsLYwZltlwRzzFoXhrsIQ9U6cn0wxCJE8ZLSKsiynpnRtP kjzkuYoifPkqFfFu/xn6stdRZbff3DeIV4Y1Tx+w5JgROZwEGiY0KwxevDbdb2VAZho9 gS05l0a0MjkKD3plFa+XxIEO68gExSCuXF86L6lZecquEWZcoSyd/CAnf2tqLaHb7Oyf 63DDpTVJscOq5ZIrRo9D2PU4EIo3YW5Vc0dC3mXu9MYPxlTFz/MT8wO7Cv68AIjo0KN5 3ZIiwlLICkiySjarIaoZ6jzuEjF181VDU5+VCt6ohsFjqlWVi3rZdDY6T+WDMZHUXcWS SSDg== Received: by 10.50.7.212 with SMTP id l20mr1428657iga.43.1348142969152; Thu, 20 Sep 2012 05:09:29 -0700 (PDT) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.50.184.232 with SMTP id ex8csp71417igc; Thu, 20 Sep 2012 05:09:27 -0700 (PDT) Received: by 10.216.207.160 with SMTP id n32mr1124408weo.61.1348142966290; Thu, 20 Sep 2012 05:09:26 -0700 (PDT) Received: from mail-wg0-f50.google.com (mail-wg0-f50.google.com [74.125.82.50]) by mx.google.com with ESMTPS id a6si41848249wix.26.2012.09.20.05.09.25 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 20 Sep 2012 05:09:26 -0700 (PDT) Received-SPF: neutral (google.com: 74.125.82.50 is neither permitted nor denied by best guess record for domain of lee.jones@linaro.org) client-ip=74.125.82.50; Authentication-Results: mx.google.com; spf=neutral (google.com: 74.125.82.50 is neither permitted nor denied by best guess record for domain of lee.jones@linaro.org) smtp.mail=lee.jones@linaro.org Received: by wgi16 with SMTP id 16so1632733wgi.31 for ; Thu, 20 Sep 2012 05:09:25 -0700 (PDT) Received: by 10.180.100.131 with SMTP id ey3mr4104155wib.15.1348142965643; Thu, 20 Sep 2012 05:09:25 -0700 (PDT) Received: from localhost.localdomain (LPuteaux-156-14-44-212.w82-127.abo.wanadoo.fr. [82.127.83.212]) by mx.google.com with ESMTPS id o2sm10403731wiz.11.2012.09.20.05.09.23 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 20 Sep 2012 05:09:24 -0700 (PDT) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, broonie@opensource.wolfsonmicro.com Cc: STEricsson_nomadik_linux@list.st.com, linus.walleij@stericsson.com, arnd@arndb.de, ola.o.lilja@stericsson.com, alsa-devel@alsa-project.org, Lee Jones Subject: [PATCH 1/7] ASoC: Ux500: Move MSP pinctrl setup into the MSP driver Date: Thu, 20 Sep 2012 14:09:10 +0200 Message-Id: <1348142956-1872-2-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1348142956-1872-1-git-send-email-lee.jones@linaro.org> References: <1348142956-1872-1-git-send-email-lee.jones@linaro.org> X-Gm-Message-State: ALoCoQkG1eva0k4cEdmf/uMqrMrOqlGhay0xp5BNdyAxlVVgHU/Wg2bk0H1LZE2R7QHSEGcfjdxf In the initial submission of the MSP driver msp1 and msp3's associated pinctrl mechanism was passed back to platform code using a plat_init() call-back routine, but it has no place in platform code. The MSP driver should set this up for the appropriate ports. Instead we use a use_pinctrl identifier which is passed from platform_data/Device Tree which indicates which ports should use pinctrl. Acked-by: Ola Lilja Acked-by: Linus Walleij Signed-off-by: Lee Jones --- arch/arm/mach-ux500/board-mop500-msp.c | 79 +------------------------------- arch/arm/mach-ux500/include/mach/msp.h | 2 - sound/soc/ux500/ux500_msp_i2s.c | 67 ++++++++++++++++++++------- sound/soc/ux500/ux500_msp_i2s.h | 8 +++- 4 files changed, 58 insertions(+), 98 deletions(-) diff --git a/arch/arm/mach-ux500/board-mop500-msp.c b/arch/arm/mach-ux500/board-mop500-msp.c index df15646..ace6c05 100644 --- a/arch/arm/mach-ux500/board-mop500-msp.c +++ b/arch/arm/mach-ux500/board-mop500-msp.c @@ -7,7 +7,6 @@ #include #include #include -#include #include #include @@ -23,53 +22,6 @@ #include "devices-db8500.h" #include "pins-db8500.h" -/* MSP1/3 Tx/Rx usage protection */ -static DEFINE_SPINLOCK(msp_rxtx_lock); - -/* Reference Count */ -static int msp_rxtx_ref; - -/* Pin modes */ -struct pinctrl *msp1_p; -struct pinctrl_state *msp1_def; -struct pinctrl_state *msp1_sleep; - -int msp13_i2s_init(void) -{ - int retval = 0; - unsigned long flags; - - spin_lock_irqsave(&msp_rxtx_lock, flags); - if (msp_rxtx_ref == 0 && !(IS_ERR(msp1_p) || IS_ERR(msp1_def))) { - retval = pinctrl_select_state(msp1_p, msp1_def); - if (retval) - pr_err("could not set MSP1 defstate\n"); - } - if (!retval) - msp_rxtx_ref++; - spin_unlock_irqrestore(&msp_rxtx_lock, flags); - - return retval; -} - -int msp13_i2s_exit(void) -{ - int retval = 0; - unsigned long flags; - - spin_lock_irqsave(&msp_rxtx_lock, flags); - WARN_ON(!msp_rxtx_ref); - msp_rxtx_ref--; - if (msp_rxtx_ref == 0 && !(IS_ERR(msp1_p) || IS_ERR(msp1_sleep))) { - retval = pinctrl_select_state(msp1_p, msp1_sleep); - if (retval) - pr_err("could not set MSP1 sleepstate\n"); - } - spin_unlock_irqrestore(&msp_rxtx_lock, flags); - - return retval; -} - static struct stedma40_chan_cfg msp0_dma_rx = { .high_priority = true, .dir = STEDMA40_PERIPH_TO_MEM, @@ -132,8 +84,6 @@ static struct msp_i2s_platform_data msp1_platform_data = { .id = MSP_I2S_1, .msp_i2s_dma_rx = NULL, .msp_i2s_dma_tx = &msp1_dma_tx, - .msp_i2s_init = msp13_i2s_init, - .msp_i2s_exit = msp13_i2s_exit, }; static struct stedma40_chan_cfg msp2_dma_rx = { @@ -219,49 +169,22 @@ static struct msp_i2s_platform_data msp3_platform_data = { .id = MSP_I2S_3, .msp_i2s_dma_rx = &msp1_dma_rx, .msp_i2s_dma_tx = NULL, - .msp_i2s_init = msp13_i2s_init, - .msp_i2s_exit = msp13_i2s_exit, }; int mop500_msp_init(struct device *parent) { - struct platform_device *msp1; - pr_info("%s: Register platform-device 'snd-soc-mop500'.\n", __func__); platform_device_register(&snd_soc_mop500); pr_info("Initialize MSP I2S-devices.\n"); db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, &msp0_platform_data); - msp1 = db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, + db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, &msp1_platform_data); db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, &msp2_platform_data); db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, &msp3_platform_data); - /* Get the pinctrl handle for MSP1 */ - if (msp1) { - msp1_p = pinctrl_get(&msp1->dev); - if (IS_ERR(msp1_p)) - dev_err(&msp1->dev, "could not get MSP1 pinctrl\n"); - else { - msp1_def = pinctrl_lookup_state(msp1_p, - PINCTRL_STATE_DEFAULT); - if (IS_ERR(msp1_def)) { - dev_err(&msp1->dev, - "could not get MSP1 defstate\n"); - } - msp1_sleep = pinctrl_lookup_state(msp1_p, - PINCTRL_STATE_SLEEP); - if (IS_ERR(msp1_sleep)) - dev_err(&msp1->dev, - "could not get MSP1 idlestate\n"); - } - } - - pr_info("%s: Register platform-device 'ux500-pcm'\n", __func__); - platform_device_register(&ux500_pcm); - return 0; } diff --git a/arch/arm/mach-ux500/include/mach/msp.h b/arch/arm/mach-ux500/include/mach/msp.h index 798be19..3cc7142 100644 --- a/arch/arm/mach-ux500/include/mach/msp.h +++ b/arch/arm/mach-ux500/include/mach/msp.h @@ -22,8 +22,6 @@ struct msp_i2s_platform_data { enum msp_i2s_id id; struct stedma40_chan_cfg *msp_i2s_dma_rx; struct stedma40_chan_cfg *msp_i2s_dma_tx; - int (*msp_i2s_init) (void); - int (*msp_i2s_exit) (void); }; #endif diff --git a/sound/soc/ux500/ux500_msp_i2s.c b/sound/soc/ux500/ux500_msp_i2s.c index eb85113..12d7f56 100644 --- a/sound/soc/ux500/ux500_msp_i2s.c +++ b/sound/soc/ux500/ux500_msp_i2s.c @@ -15,6 +15,7 @@ #include #include +#include #include #include @@ -25,6 +26,9 @@ #include "ux500_msp_i2s.h" +/* MSP1/3 Tx/Rx usage protection */ +static DEFINE_SPINLOCK(msp_rxtx_lock); + /* Protocol desciptors */ static const struct msp_protdesc prot_descs[] = { { /* I2S */ @@ -352,17 +356,23 @@ static int configure_multichannel(struct ux500_msp *msp, static int enable_msp(struct ux500_msp *msp, struct ux500_msp_config *config) { - int status = 0; + int status = 0, retval = 0; u32 reg_val_DMACR, reg_val_GCR; + unsigned long flags; /* Check msp state whether in RUN or CONFIGURED Mode */ - if ((msp->msp_state == MSP_STATE_IDLE) && (msp->plat_init)) { - status = msp->plat_init(); - if (status) { - dev_err(msp->dev, "%s: ERROR: Failed to init MSP (%d)!\n", - __func__, status); - return status; + if (msp->msp_state == MSP_STATE_IDLE) { + spin_lock_irqsave(&msp_rxtx_lock, flags); + if (msp->pinctrl_rxtx_ref == 0 && + !(IS_ERR(msp->pinctrl_p) || IS_ERR(msp->pinctrl_def))) { + retval = pinctrl_select_state(msp->pinctrl_p, + msp->pinctrl_def); + if (retval) + pr_err("could not set MSP defstate\n"); } + if (!retval) + msp->pinctrl_rxtx_ref++; + spin_unlock_irqrestore(&msp_rxtx_lock, flags); } /* Configure msp with protocol dependent settings */ @@ -620,7 +630,8 @@ int ux500_msp_i2s_trigger(struct ux500_msp *msp, int cmd, int direction) int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir) { - int status = 0; + int status = 0, retval = 0; + unsigned long flags; dev_dbg(msp->dev, "%s: Enter (dir = 0x%01x).\n", __func__, dir); @@ -631,12 +642,19 @@ int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir) writel((readl(msp->registers + MSP_GCR) & (~(FRAME_GEN_ENABLE | SRG_ENABLE))), msp->registers + MSP_GCR); - if (msp->plat_exit) - status = msp->plat_exit(); - if (status) - dev_warn(msp->dev, - "%s: WARN: ux500_msp_i2s_exit failed (%d)!\n", - __func__, status); + + spin_lock_irqsave(&msp_rxtx_lock, flags); + WARN_ON(!msp->pinctrl_rxtx_ref); + msp->pinctrl_rxtx_ref--; + if (msp->pinctrl_rxtx_ref == 0 && + !(IS_ERR(msp->pinctrl_p) || IS_ERR(msp->pinctrl_sleep))) { + retval = pinctrl_select_state(msp->pinctrl_p, + msp->pinctrl_sleep); + if (retval) + pr_err("could not set MSP sleepstate\n"); + } + spin_unlock_irqrestore(&msp_rxtx_lock, flags); + writel(0, msp->registers + MSP_GCR); writel(0, msp->registers + MSP_TCF); writel(0, msp->registers + MSP_RCF); @@ -675,8 +693,6 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev, msp->id = platform_data->id; msp->dev = &pdev->dev; - msp->plat_init = platform_data->msp_i2s_init; - msp->plat_exit = platform_data->msp_i2s_exit; msp->dma_cfg_rx = platform_data->msp_i2s_dma_rx; msp->dma_cfg_tx = platform_data->msp_i2s_dma_tx; @@ -713,6 +729,25 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev, dev_dbg(&pdev->dev, "I2S device-name: '%s'\n", i2s_cont->name); msp->i2s_cont = i2s_cont; + msp->pinctrl_p = pinctrl_get(msp->dev); + if (IS_ERR(msp->pinctrl_p)) + dev_err(&pdev->dev, "could not get MSP pinctrl\n"); + else { + msp->pinctrl_def = pinctrl_lookup_state(msp->pinctrl_p, + PINCTRL_STATE_DEFAULT); + if (IS_ERR(msp->pinctrl_def)) { + dev_err(&pdev->dev, + "could not get MSP defstate (%li)\n", + PTR_ERR(msp->pinctrl_def)); + } + msp->pinctrl_sleep = pinctrl_lookup_state(msp->pinctrl_p, + PINCTRL_STATE_SLEEP); + if (IS_ERR(msp->pinctrl_sleep)) + dev_err(&pdev->dev, + "could not get MSP idlestate (%li)\n", + PTR_ERR(msp->pinctrl_def)); + } + return 0; } diff --git a/sound/soc/ux500/ux500_msp_i2s.h b/sound/soc/ux500/ux500_msp_i2s.h index 2d9136d..1311c0d 100644 --- a/sound/soc/ux500/ux500_msp_i2s.h +++ b/sound/soc/ux500/ux500_msp_i2s.h @@ -524,14 +524,18 @@ struct ux500_msp { struct dma_chan *rx_pipeid; enum msp_state msp_state; int (*transfer) (struct ux500_msp *msp, struct i2s_message *message); - int (*plat_init) (void); - int (*plat_exit) (void); struct timer_list notify_timer; int def_elem_len; unsigned int dir_busy; int loopback_enable; u32 backup_regs[MAX_MSP_BACKUP_REGS]; unsigned int f_bitclk; + /* Pin modes */ + struct pinctrl *pinctrl_p; + struct pinctrl_state *pinctrl_def; + struct pinctrl_state *pinctrl_sleep; + /* Reference Count */ + int pinctrl_rxtx_ref; }; struct ux500_msp_dma_params {