From 23b07d4cb3c0c850055cf968af44019b8da185fb Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 22 Feb 2014 16:53:34 +0100 Subject: ahci-platform: "Library-ise" ahci_probe functionality ahci_probe consists of 3 steps: 1) Get resources (get mmio, clks, regulator) 2) Enable resources, handled by ahci_platform_enable_resouces 3) The more or less standard ahci-host controller init sequence This commit refactors step 1 and 3 into separate functions, so the platform drivers for AHCI implementations which need a specific order in step 2, and / or need to do some custom register poking at some time, can re-use ahci-platform.c code without needing to copy and paste it. Note that ahci_platform_init_host's prototype takes the 3 non function members of ahci_platform_data as arguments, the idea is that drivers using the new exported utility functions will not use ahci_platform_data at all, and hopefully in the future ahci_platform_data can go away entirely. tj: Minor comment formatting updates. Signed-off-by: Hans de Goede Signed-off-by: Tejun Heo --- include/linux/ahci_platform.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux/ahci_platform.h') diff --git a/include/linux/ahci_platform.h b/include/linux/ahci_platform.h index b674b01ce9bc..b80c51c20f76 100644 --- a/include/linux/ahci_platform.h +++ b/include/linux/ahci_platform.h @@ -20,7 +20,14 @@ struct device; struct ata_port_info; struct ahci_host_priv; +struct platform_device; +/* + * Note ahci_platform_data is deprecated, it is only kept around for use + * by the old da850 and spear13xx ahci code. + * New drivers should instead declare their own platform_driver struct, and + * use ahci_platform* functions in their own probe, suspend and resume methods. + */ struct ahci_platform_data { int (*init)(struct device *dev, void __iomem *addr); void (*exit)(struct device *dev); @@ -35,5 +42,12 @@ int ahci_platform_enable_clks(struct ahci_host_priv *hpriv); void ahci_platform_disable_clks(struct ahci_host_priv *hpriv); int ahci_platform_enable_resources(struct ahci_host_priv *hpriv); void ahci_platform_disable_resources(struct ahci_host_priv *hpriv); +struct ahci_host_priv *ahci_platform_get_resources( + struct platform_device *pdev); +int ahci_platform_init_host(struct platform_device *pdev, + struct ahci_host_priv *hpriv, + const struct ata_port_info *pi_template, + unsigned int force_port_map, + unsigned int mask_port_map); #endif /* _AHCI_PLATFORM_H */ -- cgit v1.2.3