[net-next: PATCH v2 4/7] net: mvmdio: simplify clock handling
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STALE1959d
SUPERSEDED
From: Marcin Wojtas <hidden>
Date: 2021-06-16 19:08:39
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Status: Superseded by v3 (posted 2021-06-21). [go to v3]
Revision v2 (2 revisions archived).
Revisions (2)
- v2 current
- v3 [diff against previous]
Because the mvmdio driver supports a wide range of Marvell SoC families it must support multiple types of the HW description and required resources. Thanks to the devm_clk_bulk_get_optional() helper routine the clock handling could be significantly simplified, as it is compatible with all possible variants within a single call. Suggested-by: Andy Shevchenko <redacted> Signed-off-by: Marcin Wojtas <redacted> --- drivers/net/ethernet/marvell/mvmdio.c | 61 ++++++-------------- 1 file changed, 18 insertions(+), 43 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index d14762d93640..ce3ddc867898 100644
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c@@ -62,9 +62,11 @@ #define MVMDIO_XSMI_POLL_INTERVAL_MIN 150 #define MVMDIO_XSMI_POLL_INTERVAL_MAX 160 +#define MVMDIO_CLOCK_COUNT 4 + struct orion_mdio_dev { void __iomem *regs; - struct clk *clk[4]; + struct clk_bulk_data clks[MVMDIO_CLOCK_COUNT]; /* * If we have access to the error interrupt pin (which is * somewhat misnamed as it not only reflects internal errors
@@ -279,7 +281,7 @@ static int orion_mdio_probe(struct platform_device *pdev) struct resource *r; struct mii_bus *bus; struct orion_mdio_dev *dev; - int i, ret; + int ret; type = (enum orion_mdio_bus_type)of_device_get_match_data(&pdev->dev);
@@ -319,33 +321,20 @@ static int orion_mdio_probe(struct platform_device *pdev) init_waitqueue_head(&dev->smi_busy_wait); - if (pdev->dev.of_node) { - for (i = 0; i < ARRAY_SIZE(dev->clk); i++) { - dev->clk[i] = of_clk_get(pdev->dev.of_node, i); - if (PTR_ERR(dev->clk[i]) == -EPROBE_DEFER) { - ret = -EPROBE_DEFER; - goto out_clk; - } - if (IS_ERR(dev->clk[i])) - break; - clk_prepare_enable(dev->clk[i]); - } - - if (!IS_ERR(of_clk_get(pdev->dev.of_node, - ARRAY_SIZE(dev->clk)))) - dev_warn(&pdev->dev, - "unsupported number of clocks, limiting to the first " - __stringify(ARRAY_SIZE(dev->clk)) "\n"); - } else { - dev->clk[0] = clk_get(&pdev->dev, NULL); - if (PTR_ERR(dev->clk[0]) == -EPROBE_DEFER) { - ret = -EPROBE_DEFER; - goto out_clk; - } - if (!IS_ERR(dev->clk[0])) - clk_prepare_enable(dev->clk[0]); - } + dev->clks[0].id = "core"; + dev->clks[1].id = "mg"; + dev->clks[2].id = "mg_core"; + dev->clks[3].id = "axi"; + ret = devm_clk_bulk_get_optional(&pdev->dev, MVMDIO_CLOCK_COUNT, + dev->clks); + if (ret) + return ret; + ret = clk_bulk_prepare_enable(MVMDIO_CLOCK_COUNT, dev->clks); + if (ret) { + dev_err(&pdev->dev, "Cannot enable clocks\n"); + return ret; + } dev->err_interrupt = platform_get_irq_optional(pdev, 0); if (dev->err_interrupt > 0 &&
@@ -383,14 +372,6 @@ static int orion_mdio_probe(struct platform_device *pdev) if (dev->err_interrupt > 0) writel(0, dev->regs + MVMDIO_ERR_INT_MASK); -out_clk: - for (i = 0; i < ARRAY_SIZE(dev->clk); i++) { - if (IS_ERR(dev->clk[i])) - break; - clk_disable_unprepare(dev->clk[i]); - clk_put(dev->clk[i]); - } - return ret; }
@@ -398,18 +379,12 @@ static int orion_mdio_remove(struct platform_device *pdev) { struct mii_bus *bus = platform_get_drvdata(pdev); struct orion_mdio_dev *dev = bus->priv; - int i; if (dev->err_interrupt > 0) writel(0, dev->regs + MVMDIO_ERR_INT_MASK); mdiobus_unregister(bus); - for (i = 0; i < ARRAY_SIZE(dev->clk); i++) { - if (IS_ERR(dev->clk[i])) - break; - clk_disable_unprepare(dev->clk[i]); - clk_put(dev->clk[i]); - } + clk_bulk_disable_unprepare(MVMDIO_CLOCK_COUNT, dev->clks); return 0; }
--
2.29.0