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6ce73f3a6f
Since all the clocks are retrieved by the method ahci_platform_get_resources() there is no need for the LLD (glue) drivers to be looking for some particular of them in the kernel clocks table again. Instead we suggest to add a simple method returning a device-specific clock with passed connection ID if it is managed to be found. Otherwise the function will return NULL. Thus the glue-drivers won't need to either manually touching the hpriv->clks array or calling clk_get()-friends. The AHCI platform drivers will be able to use the new function right after the ahci_platform_get_resources() method invocation and up to the device removal. Note the method is left unused here, but will be utilized in the framework of the DWC AHCI SATA driver being added in the next commit. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* AHCI SATA platform driver
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*
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* Copyright 2004-2005 Red Hat, Inc.
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* Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2010 MontaVista Software, LLC.
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* Anton Vorontsov <avorontsov@ru.mvista.com>
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*/
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#ifndef _AHCI_PLATFORM_H
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#define _AHCI_PLATFORM_H
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#include <linux/compiler.h>
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struct clk;
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struct device;
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struct ata_port_info;
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struct ahci_host_priv;
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struct platform_device;
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struct scsi_host_template;
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int ahci_platform_enable_phys(struct ahci_host_priv *hpriv);
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void ahci_platform_disable_phys(struct ahci_host_priv *hpriv);
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struct clk *ahci_platform_find_clk(struct ahci_host_priv *hpriv,
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const char *con_id);
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int ahci_platform_enable_clks(struct ahci_host_priv *hpriv);
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void ahci_platform_disable_clks(struct ahci_host_priv *hpriv);
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int ahci_platform_deassert_rsts(struct ahci_host_priv *hpriv);
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int ahci_platform_assert_rsts(struct ahci_host_priv *hpriv);
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int ahci_platform_enable_regulators(struct ahci_host_priv *hpriv);
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void ahci_platform_disable_regulators(struct ahci_host_priv *hpriv);
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int ahci_platform_enable_resources(struct ahci_host_priv *hpriv);
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void ahci_platform_disable_resources(struct ahci_host_priv *hpriv);
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struct ahci_host_priv *ahci_platform_get_resources(
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struct platform_device *pdev, unsigned int flags);
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int ahci_platform_init_host(struct platform_device *pdev,
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struct ahci_host_priv *hpriv,
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const struct ata_port_info *pi_template,
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struct scsi_host_template *sht);
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void ahci_platform_shutdown(struct platform_device *pdev);
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int ahci_platform_suspend_host(struct device *dev);
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int ahci_platform_resume_host(struct device *dev);
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int ahci_platform_suspend(struct device *dev);
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int ahci_platform_resume(struct device *dev);
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#define AHCI_PLATFORM_GET_RESETS BIT(0)
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#define AHCI_PLATFORM_RST_TRIGGER BIT(1)
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#endif /* _AHCI_PLATFORM_H */
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