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9eb73f92a0
'struct regmap_config' are not modified in these drivers. They be
statically defined instead of allocated and populated at run-time.
The main benefits are:
- it saves some memory at runtime
- the structures can be declared as 'const', which is always better for
structures that hold some function pointers
- the code is less verbose
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/reset.h>
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#include <net/dsa.h>
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#include "mt7530.h"
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static const struct of_device_id mt7988_of_match[] = {
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{ .compatible = "airoha,an7583-switch", .data = &mt753x_table[ID_AN7583], },
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{ .compatible = "airoha,en7581-switch", .data = &mt753x_table[ID_EN7581], },
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{ .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], },
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{ /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, mt7988_of_match);
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static const struct regmap_config sw_regmap_config = {
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.name = "switch",
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.reg_bits = 16,
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.val_bits = 32,
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.reg_stride = 4,
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.max_register = MT7530_CREV,
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};
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static int
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mt7988_probe(struct platform_device *pdev)
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{
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struct mt7530_priv *priv;
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void __iomem *base_addr;
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int ret;
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priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->bus = NULL;
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priv->dev = &pdev->dev;
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ret = mt7530_probe_common(priv);
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if (ret)
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return ret;
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priv->rstc = devm_reset_control_get(&pdev->dev, NULL);
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if (IS_ERR(priv->rstc)) {
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dev_err(&pdev->dev, "Couldn't get our reset line\n");
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return PTR_ERR(priv->rstc);
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}
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base_addr = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(base_addr)) {
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dev_err(&pdev->dev, "cannot request I/O memory space\n");
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return -ENXIO;
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}
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priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr,
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&sw_regmap_config);
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if (IS_ERR(priv->regmap))
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return PTR_ERR(priv->regmap);
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return dsa_register_switch(priv->ds);
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}
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static void mt7988_remove(struct platform_device *pdev)
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{
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struct mt7530_priv *priv = platform_get_drvdata(pdev);
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if (priv)
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mt7530_remove_common(priv);
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}
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static void mt7988_shutdown(struct platform_device *pdev)
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{
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struct mt7530_priv *priv = platform_get_drvdata(pdev);
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if (!priv)
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return;
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dsa_switch_shutdown(priv->ds);
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dev_set_drvdata(&pdev->dev, NULL);
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}
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static struct platform_driver mt7988_platform_driver = {
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.probe = mt7988_probe,
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.remove = mt7988_remove,
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.shutdown = mt7988_shutdown,
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.driver = {
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.name = "mt7530-mmio",
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.of_match_table = mt7988_of_match,
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},
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};
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module_platform_driver(mt7988_platform_driver);
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MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>");
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MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)");
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MODULE_LICENSE("GPL");
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