From: Markus Pargmann <mpa@pengutronix.de>
To: Mark Brown <broonie@kernel.org>
Cc: Fabio Estevam <fabio.estevam@freescale.com>,
alsa-devel@alsa-project.org, Alexander Shiyan <shc_work@mail.ru>,
Timur Tabi <timur@tabi.org>,
"Li.Xiubo@freescale.com" <Li.Xiubo@freescale.com>,
kernel@pengutronix.de, Nicolin Chen <Guangyu.Chen@freescale.com>,
Markus Pargmann <mpa@pengutronix.de>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 04/18] ASoC: fsl-ssi: Move imx-specific probe to seperate function
Date: Mon, 14 Apr 2014 15:35:34 +0200 [thread overview]
Message-ID: <1397482548-28463-5-git-send-email-mpa@pengutronix.de> (raw)
In-Reply-To: <1397482548-28463-1-git-send-email-mpa@pengutronix.de>
Move imx specific probe code to a seperate function. It reduces the
size of the probe() function and makes the code and error handling
easier to understand.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
sound/soc/fsl/fsl_ssi.c | 185 +++++++++++++++++++++++++++---------------------
1 file changed, 103 insertions(+), 82 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 65d9da1..418c646 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -992,6 +992,100 @@ static void make_lowercase(char *s)
}
}
+static int fsl_ssi_imx_probe(struct platform_device *pdev,
+ struct fsl_ssi_private *ssi_private)
+{
+ struct device_node *np = pdev->dev.of_node;
+ u32 dma_events[2], dmas[4];
+ bool shared;
+ int ret;
+
+ ssi_private->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(ssi_private->clk)) {
+ ret = PTR_ERR(ssi_private->clk);
+ dev_err(&pdev->dev, "could not get clock: %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(ssi_private->clk);
+ if (ret) {
+ dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret);
+ return ret;
+ }
+
+ /* For those SLAVE implementations, we ingore non-baudclk cases
+ * and, instead, abandon MASTER mode that needs baud clock.
+ */
+ ssi_private->baudclk = devm_clk_get(&pdev->dev, "baud");
+ if (IS_ERR(ssi_private->baudclk))
+ dev_dbg(&pdev->dev, "could not get baud clock: %ld\n",
+ PTR_ERR(ssi_private->baudclk));
+ else
+ clk_prepare_enable(ssi_private->baudclk);
+
+ /*
+ * We have burstsize be "fifo_depth - 2" to match the SSI
+ * watermark setting in fsl_ssi_startup().
+ */
+ ssi_private->dma_params_tx.maxburst = ssi_private->fifo_depth - 2;
+ ssi_private->dma_params_rx.maxburst = ssi_private->fifo_depth - 2;
+ ssi_private->dma_params_tx.addr = ssi_private->ssi_phys +
+ offsetof(struct ccsr_ssi, stx0);
+ ssi_private->dma_params_rx.addr = ssi_private->ssi_phys +
+ offsetof(struct ccsr_ssi, srx0);
+ ssi_private->dma_params_tx.filter_data = &ssi_private->filter_data_tx;
+ ssi_private->dma_params_rx.filter_data = &ssi_private->filter_data_rx;
+
+ if (!of_property_read_bool(pdev->dev.of_node, "dmas") &&
+ ssi_private->use_dma) {
+ /*
+ * FIXME: This is a temporary solution until all
+ * necessary dma drivers support the generic dma
+ * bindings.
+ */
+ ret = of_property_read_u32_array(pdev->dev.of_node,
+ "fsl,ssi-dma-events", dma_events, 2);
+ if (ret && ssi_private->use_dma) {
+ dev_err(&pdev->dev, "could not get dma events but fsl-ssi is configured to use DMA\n");
+ goto error_dma_events;
+ }
+ }
+ /* Should this be merge with the above? */
+ if (!of_property_read_u32_array(pdev->dev.of_node, "dmas", dmas, 4)
+ && dmas[2] == IMX_DMATYPE_SSI_DUAL) {
+ ssi_private->use_dual_fifo = true;
+ /* When using dual fifo mode, we need to keep watermark
+ * as even numbers due to dma script limitation.
+ */
+ ssi_private->dma_params_tx.maxburst &= ~0x1;
+ ssi_private->dma_params_rx.maxburst &= ~0x1;
+ }
+
+ shared = of_device_is_compatible(of_get_parent(np), "fsl,spba-bus");
+
+ imx_pcm_dma_params_init_data(&ssi_private->filter_data_tx,
+ dma_events[0], shared ? IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI);
+ imx_pcm_dma_params_init_data(&ssi_private->filter_data_rx,
+ dma_events[1], shared ? IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI);
+
+ return 0;
+
+error_dma_events:
+ if (!IS_ERR(ssi_private->baudclk))
+ clk_disable_unprepare(ssi_private->baudclk);
+ clk_disable_unprepare(ssi_private->clk);
+
+ return ret;
+}
+
+static void fsl_ssi_imx_clean(struct platform_device *pdev,
+ struct fsl_ssi_private *ssi_private)
+{
+ if (!IS_ERR(ssi_private->baudclk))
+ clk_disable_unprepare(ssi_private->baudclk);
+ clk_disable_unprepare(ssi_private->clk);
+}
+
static int fsl_ssi_probe(struct platform_device *pdev)
{
struct fsl_ssi_private *ssi_private;
@@ -1004,7 +1098,6 @@ static int fsl_ssi_probe(struct platform_device *pdev)
const uint32_t *iprop;
struct resource res;
char name[64];
- bool shared;
bool ac97 = false;
/* SSIs that are not connected on the board should have a
@@ -1118,80 +1211,11 @@ static int fsl_ssi_probe(struct platform_device *pdev)
if (hw_type == FSL_SSI_MX21 || hw_type == FSL_SSI_MX51 ||
hw_type == FSL_SSI_MX35) {
- u32 dma_events[2], dmas[4];
ssi_private->ssi_on_imx = true;
- ssi_private->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(ssi_private->clk)) {
- ret = PTR_ERR(ssi_private->clk);
- dev_err(&pdev->dev, "could not get clock: %d\n", ret);
+ ret = fsl_ssi_imx_probe(pdev, ssi_private);
+ if (ret)
goto error_irqmap;
- }
- ret = clk_prepare_enable(ssi_private->clk);
- if (ret) {
- dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n",
- ret);
- goto error_irqmap;
- }
-
- /* For those SLAVE implementations, we ingore non-baudclk cases
- * and, instead, abandon MASTER mode that needs baud clock.
- */
- ssi_private->baudclk = devm_clk_get(&pdev->dev, "baud");
- if (IS_ERR(ssi_private->baudclk))
- dev_dbg(&pdev->dev, "could not get baud clock: %ld\n",
- PTR_ERR(ssi_private->baudclk));
- else
- clk_prepare_enable(ssi_private->baudclk);
-
- /*
- * We have burstsize be "fifo_depth - 2" to match the SSI
- * watermark setting in fsl_ssi_startup().
- */
- ssi_private->dma_params_tx.maxburst =
- ssi_private->fifo_depth - 2;
- ssi_private->dma_params_rx.maxburst =
- ssi_private->fifo_depth - 2;
- ssi_private->dma_params_tx.addr =
- ssi_private->ssi_phys + offsetof(struct ccsr_ssi, stx0);
- ssi_private->dma_params_rx.addr =
- ssi_private->ssi_phys + offsetof(struct ccsr_ssi, srx0);
- ssi_private->dma_params_tx.filter_data =
- &ssi_private->filter_data_tx;
- ssi_private->dma_params_rx.filter_data =
- &ssi_private->filter_data_rx;
- if (!of_property_read_bool(pdev->dev.of_node, "dmas") &&
- ssi_private->use_dma) {
- /*
- * FIXME: This is a temporary solution until all
- * necessary dma drivers support the generic dma
- * bindings.
- */
- ret = of_property_read_u32_array(pdev->dev.of_node,
- "fsl,ssi-dma-events", dma_events, 2);
- if (ret && ssi_private->use_dma) {
- dev_err(&pdev->dev, "could not get dma events but fsl-ssi is configured to use DMA\n");
- goto error_clk;
- }
- }
- /* Should this be merge with the above? */
- if (!of_property_read_u32_array(pdev->dev.of_node, "dmas", dmas, 4)
- && dmas[2] == IMX_DMATYPE_SSI_DUAL) {
- ssi_private->use_dual_fifo = true;
- /* When using dual fifo mode, we need to keep watermark
- * as even numbers due to dma script limitation.
- */
- ssi_private->dma_params_tx.maxburst &= ~0x1;
- ssi_private->dma_params_rx.maxburst &= ~0x1;
- }
-
- shared = of_device_is_compatible(of_get_parent(np),
- "fsl,spba-bus");
-
- imx_pcm_dma_params_init_data(&ssi_private->filter_data_tx,
- dma_events[0], shared ? IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI);
- imx_pcm_dma_params_init_data(&ssi_private->filter_data_rx,
- dma_events[1], shared ? IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI);
}
/*
@@ -1206,7 +1230,7 @@ static int fsl_ssi_probe(struct platform_device *pdev)
if (ret < 0) {
dev_err(&pdev->dev, "could not claim irq %u\n",
ssi_private->irq);
- goto error_clk;
+ goto error_irq;
}
}
@@ -1298,11 +1322,9 @@ error_dbgfs:
error_dev:
device_remove_file(&pdev->dev, dev_attr);
-error_clk:
+error_irq:
if (ssi_private->ssi_on_imx) {
- if (!IS_ERR(ssi_private->baudclk))
- clk_disable_unprepare(ssi_private->baudclk);
- clk_disable_unprepare(ssi_private->clk);
+ fsl_ssi_imx_clean(pdev, ssi_private);
}
error_irqmap:
@@ -1321,11 +1343,10 @@ static int fsl_ssi_remove(struct platform_device *pdev)
if (!ssi_private->new_binding)
platform_device_unregister(ssi_private->pdev);
snd_soc_unregister_component(&pdev->dev);
- if (ssi_private->ssi_on_imx) {
- if (!IS_ERR(ssi_private->baudclk))
- clk_disable_unprepare(ssi_private->baudclk);
- clk_disable_unprepare(ssi_private->clk);
- }
+
+ if (ssi_private->ssi_on_imx)
+ fsl_ssi_imx_clean(pdev, ssi_private);
+
if (ssi_private->irq_stats)
irq_dispose_mapping(ssi_private->irq);
--
1.9.1
next prev parent reply other threads:[~2014-04-14 13:35 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-14 13:35 [PATCH v3 00/18] ASoC: fsl-ssi: Driver cleanup Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 01/18] ASoC: fsl-ssi: Fix register values when disabling Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 02/18] ASoC: fsl-ssi: Move debugging to seperate file Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 03/18] ASoC: fsl-ssi: Use dev_name for DAI driver struct Markus Pargmann
2014-04-14 13:35 ` Markus Pargmann [this message]
2014-04-14 13:35 ` [PATCH v3 05/18] ASoC: fsl-ssi: Remove useless DMA code Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 06/18] ASoC: fsl-ssi: Cleanup probe function Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 07/18] ASoC: fsl-ssi: Remove unnecessary variables from ssi_private Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 08/18] ASoC: fsl-ssi: introduce SoC specific data Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 09/18] ASoC: fsl-ssi: Only enable baudclk when used Markus Pargmann
2014-04-14 15:28 ` Nicolin Chen
2014-04-16 7:27 ` Markus Pargmann
2014-04-16 8:08 ` Nicolin Chen
2014-04-16 8:43 ` Markus Pargmann
2014-04-16 8:40 ` Nicolin Chen
2014-04-16 17:42 ` Mark Brown
2014-04-17 13:46 ` Timur Tabi
2014-04-14 13:35 ` [PATCH v3 10/18] ASoC: fsl-ssi: make fsl,mode property optional Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 11/18] ASoC: fsl-ssi: Transmit enable synchronization Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 12/18] ASoC: fsl-ssi: Move fsl_ssi_set_dai_sysclk above fsl_ssi_hw_params Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 13/18] ASoC: fsl-ssi: set bitclock in master mode from hw_params Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 14/18] ASoC: fsl-ssi: remove unnecessary spinlock Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 15/18] ASoC: fsl-ssi: Allow first stream to set the bitclock Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 16/18] ASoC: fsl-ssi: Set framerate divider correctly for i2s master mode Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 17/18] ASoC: fsl-ssi: reorder and document fsl_ssi_private Markus Pargmann
2014-04-14 13:35 ` [PATCH v3 18/18] ASoC: fsl-ssi: Use regmap Markus Pargmann
2014-04-24 11:44 ` [PATCH v3 00/18] ASoC: fsl-ssi: Driver cleanup Mark Brown
2014-04-28 8:54 ` Markus Pargmann
2014-04-29 16:22 ` Mark Brown
2014-04-30 2:01 ` Li.Xiubo
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