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Received: from mga12.intel.com ([192.55.52.136]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lgTCo-009f1k-03 for linux-arm-kernel@lists.infradead.org; Tue, 11 May 2021 14:17:51 +0000 IronPort-SDR: MzuCQ4H3mj0mLxV/BMcEyFrAfeF6C3bt9mbDYI8ipcu2IxaXih54bN0dsrgWi8dxkrGVsUh6sA GQLp8ikOCxBg== X-IronPort-AV: E=McAfee;i="6200,9189,9981"; a="179045748" X-IronPort-AV: E=Sophos;i="5.82,290,1613462400"; d="scan'208";a="179045748" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2021 07:17:10 -0700 IronPort-SDR: uvFXafhaw0WRoH46aZGCCdW7NGMorzpXPP/JV+4TespEr+mPtDjyYC2T100SoCLEh6nEn6bE02 o1IairPYtxKA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,290,1613462400"; d="scan'208";a="621829408" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga006.fm.intel.com with ESMTP; 11 May 2021 07:17:06 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 6413C338; Tue, 11 May 2021 17:17:27 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , Mark Brown , linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org Cc: Daniel Mack , Haojian Zhuang , Robert Jarzmik , Liam Girdwood , Jaroslav Kysela , Takashi Iwai Subject: [PATCH v3 2/8] spi: pxa2xx: Use pxa_ssp_enable()/pxa_ssp_disable() in the driver Date: Tue, 11 May 2021 17:17:19 +0300 Message-Id: <20210511141725.32097-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210511141725.32097-1-andriy.shevchenko@linux.intel.com> References: <20210511141725.32097-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210511_071750_108552_94142CDF X-CRM114-Status: GOOD ( 19.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There are few places that repeat the logic of pxa_ssp_enable() and pxa_ssp_disable(). Use them instead of open coded variants. Signed-off-by: Andy Shevchenko --- drivers/spi/spi-pxa2xx-dma.c | 4 +--- drivers/spi/spi-pxa2xx.c | 36 ++++++++++++++++++------------------ include/linux/pxa2xx_ssp.h | 16 ++++++++++++++++ sound/soc/pxa/pxa-ssp.c | 16 ---------------- 4 files changed, 35 insertions(+), 37 deletions(-) diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c index e00dbadd39ec..5ca01ad7f460 100644 --- a/drivers/spi/spi-pxa2xx-dma.c +++ b/drivers/spi/spi-pxa2xx-dma.c @@ -50,9 +50,7 @@ static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data, if (error) { /* In case we got an error we disable the SSP now */ - pxa2xx_spi_write(drv_data, SSCR0, - pxa2xx_spi_read(drv_data, SSCR0) - & ~SSCR0_SSE); + pxa_ssp_disable(drv_data->ssp); msg->status = -EIO; } diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 087c84e605b9..a27f51f5db65 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -286,13 +286,11 @@ static u32 pxa2xx_configure_sscr0(const struct driver_data *drv_data, case QUARK_X1000_SSP: return clk_div | QUARK_X1000_SSCR0_Motorola - | QUARK_X1000_SSCR0_DataSize(bits > 32 ? 8 : bits) - | SSCR0_SSE; + | QUARK_X1000_SSCR0_DataSize(bits > 32 ? 8 : bits); default: return clk_div | SSCR0_Motorola | SSCR0_DataSize(bits > 16 ? bits - 16 : bits) - | SSCR0_SSE | (bits > 16 ? SSCR0_EDSS : 0); } } @@ -498,8 +496,7 @@ static void pxa2xx_spi_off(struct driver_data *drv_data) if (is_mmp2_ssp(drv_data)) return; - pxa2xx_spi_write(drv_data, SSCR0, - pxa2xx_spi_read(drv_data, SSCR0) & ~SSCR0_SSE); + pxa_ssp_disable(drv_data->ssp); } static int null_writer(struct driver_data *drv_data) @@ -1098,25 +1095,26 @@ static int pxa2xx_spi_transfer_one(struct spi_controller *controller, (pxa2xx_spi_read(drv_data, DDS_RATE) != chip->dds_rate)) pxa2xx_spi_write(drv_data, DDS_RATE, chip->dds_rate); + /* Stop the SSP */ + if (!is_mmp2_ssp(drv_data)) + pxa_ssp_disable(drv_data->ssp); + + if (!pxa25x_ssp_comp(drv_data)) + pxa2xx_spi_write(drv_data, SSTO, chip->timeout); + /* see if we need to reload the config registers */ if ((pxa2xx_spi_read(drv_data, SSCR0) != cr0) || (pxa2xx_spi_read(drv_data, SSCR1) & change_mask) != (cr1 & change_mask)) { - /* stop the SSP, and update the other bits */ - if (!is_mmp2_ssp(drv_data)) - pxa2xx_spi_write(drv_data, SSCR0, cr0 & ~SSCR0_SSE); - if (!pxa25x_ssp_comp(drv_data)) - pxa2xx_spi_write(drv_data, SSTO, chip->timeout); /* first set CR1 without interrupt and service enables */ pxa2xx_spi_write(drv_data, SSCR1, cr1 & change_mask); - /* restart the SSP */ + /* Update the other bits */ pxa2xx_spi_write(drv_data, SSCR0, cr0); - - } else { - if (!pxa25x_ssp_comp(drv_data)) - pxa2xx_spi_write(drv_data, SSTO, chip->timeout); } + /* Restart the SSP */ + pxa_ssp_enable(drv_data->ssp); + if (is_mmp2_ssp(drv_data)) { u8 tx_level = (pxa2xx_spi_read(drv_data, SSSR) & SSSR_TFL_MASK) >> 8; @@ -1786,8 +1784,9 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) controller->min_speed_hz = DIV_ROUND_UP(controller->max_speed_hz, 512); + pxa_ssp_disable(ssp); + /* Load default SSP configuration */ - pxa2xx_spi_write(drv_data, SSCR0, 0); switch (drv_data->ssp_type) { case QUARK_X1000_SSP: tmp = QUARK_X1000_SSCR1_RxTresh(RX_THRESH_QUARK_X1000_DFLT) | @@ -1928,7 +1927,7 @@ static int pxa2xx_spi_remove(struct platform_device *pdev) spi_unregister_controller(drv_data->controller); /* Disable the SSP at the peripheral and SOC level */ - pxa2xx_spi_write(drv_data, SSCR0, 0); + pxa_ssp_disable(ssp); clk_disable_unprepare(ssp->clk); /* Release DMA */ @@ -1957,7 +1956,8 @@ static int pxa2xx_spi_suspend(struct device *dev) status = spi_controller_suspend(drv_data->controller); if (status != 0) return status; - pxa2xx_spi_write(drv_data, SSCR0, 0); + + pxa_ssp_disable(ssp); if (!pm_runtime_suspended(dev)) clk_disable_unprepare(ssp->clk); diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index 1b6c1a0922bd..fdfbe17e15f4 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -254,6 +254,22 @@ static inline u32 pxa_ssp_read_reg(struct ssp_device *dev, u32 reg) return __raw_readl(dev->mmio_base + reg); } +static inline void pxa_ssp_enable(struct ssp_device *ssp) +{ + u32 sscr0; + + sscr0 = pxa_ssp_read_reg(ssp, SSCR0) | SSCR0_SSE; + pxa_ssp_write_reg(ssp, SSCR0, sscr0); +} + +static inline void pxa_ssp_disable(struct ssp_device *ssp) +{ + u32 sscr0; + + sscr0 = pxa_ssp_read_reg(ssp, SSCR0) & ~SSCR0_SSE; + pxa_ssp_write_reg(ssp, SSCR0, sscr0); +} + #if IS_ENABLED(CONFIG_PXA_SSP) struct ssp_device *pxa_ssp_request(int port, const char *label); void pxa_ssp_free(struct ssp_device *); diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c index b941adcbb8f9..939e7e28486a 100644 --- a/sound/soc/pxa/pxa-ssp.c +++ b/sound/soc/pxa/pxa-ssp.c @@ -61,22 +61,6 @@ static void dump_registers(struct ssp_device *ssp) pxa_ssp_read_reg(ssp, SSACD)); } -static void pxa_ssp_enable(struct ssp_device *ssp) -{ - uint32_t sscr0; - - sscr0 = __raw_readl(ssp->mmio_base + SSCR0) | SSCR0_SSE; - __raw_writel(sscr0, ssp->mmio_base + SSCR0); -} - -static void pxa_ssp_disable(struct ssp_device *ssp) -{ - uint32_t sscr0; - - sscr0 = __raw_readl(ssp->mmio_base + SSCR0) & ~SSCR0_SSE; - __raw_writel(sscr0, ssp->mmio_base + SSCR0); -} - static void pxa_ssp_set_dma_params(struct ssp_device *ssp, int width4, int out, struct snd_dmaengine_dai_dma_data *dma) {