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125 lines
4.6 KiB
Diff
125 lines
4.6 KiB
Diff
From 938dfdaa3c0f92e9a490d324f3bce43bbaef7632 Mon Sep 17 00:00:00 2001
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From: Chen-Yu Tsai <wens@csie.org>
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Date: Fri, 17 Jan 2014 21:24:42 +0800
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Subject: [PATCH] net: stmmac: Allocate and pass soc/board specific data to
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callbacks
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The current .init and .exit callbacks requires access to driver
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private data structures. This is not a good seperation and abstraction.
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Instead, we add a new .setup callback for allocating private data, and
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pass the returned pointer to the other callbacks.
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Signed-off-by: Chen-Yu Tsai <wens@csie.org>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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Documentation/networking/stmmac.txt | 12 ++++++++----
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drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 18 ++++++++++++++----
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include/linux/stmmac.h | 6 ++++--
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3 files changed, 26 insertions(+), 10 deletions(-)
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diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt
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index cdd916d..2090895 100644
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--- a/Documentation/networking/stmmac.txt
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+++ b/Documentation/networking/stmmac.txt
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@@ -127,8 +127,9 @@ struct plat_stmmacenet_data {
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int riwt_off;
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void (*fix_mac_speed)(void *priv, unsigned int speed);
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void (*bus_setup)(void __iomem *ioaddr);
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- int (*init)(struct platform_device *pdev);
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- void (*exit)(struct platform_device *pdev);
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+ void *(*setup)(struct platform_device *pdev);
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+ int (*init)(struct platform_device *pdev, void *priv);
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+ void (*exit)(struct platform_device *pdev, void *priv);
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void *custom_cfg;
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void *custom_data;
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void *bsp_priv;
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@@ -169,10 +170,13 @@ Where:
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o bus_setup: perform HW setup of the bus. For example, on some ST platforms
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this field is used to configure the AMBA bridge to generate more
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efficient STBus traffic.
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- o init/exit: callbacks used for calling a custom initialization;
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+ o setup/init/exit: callbacks used for calling a custom initialization;
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this is sometime necessary on some platforms (e.g. ST boxes)
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where the HW needs to have set some PIO lines or system cfg
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- registers.
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+ registers. setup should return a pointer to private data,
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+ which will be stored in bsp_priv, and then passed to init and
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+ exit callbacks. init/exit callbacks should not use or modify
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+ platform data.
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o custom_cfg/custom_data: this is a custom configuration that can be passed
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while initializing the resources.
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o bsp_priv: another private pointer.
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diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
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index cc6b89a7..704a5e0 100644
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--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
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@@ -144,9 +144,16 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
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}
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}
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+ /* Custom setup (if needed) */
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+ if (plat_dat->setup) {
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+ plat_dat->bsp_priv = plat_dat->setup(pdev);
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+ if (IS_ERR(plat_dat->bsp_priv))
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+ return PTR_ERR(plat_dat->bsp_priv);
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+ }
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+
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/* Custom initialisation (if needed)*/
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if (plat_dat->init) {
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- ret = plat_dat->init(pdev);
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+ ret = plat_dat->init(pdev, plat_dat->bsp_priv);
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if (unlikely(ret))
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return ret;
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}
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@@ -203,7 +210,10 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
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int ret = stmmac_dvr_remove(ndev);
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if (priv->plat->exit)
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- priv->plat->exit(pdev);
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+ priv->plat->exit(pdev, priv->plat->bsp_priv);
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+
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+ if (priv->plat->free)
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+ priv->plat->free(pdev, priv->plat->bsp_priv);
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return ret;
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}
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@@ -218,7 +228,7 @@ static int stmmac_pltfr_suspend(struct device *dev)
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ret = stmmac_suspend(ndev);
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if (priv->plat->exit)
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- priv->plat->exit(pdev);
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+ priv->plat->exit(pdev, priv->plat->bsp_priv);
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return ret;
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}
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@@ -230,7 +240,7 @@ static int stmmac_pltfr_resume(struct device *dev)
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struct platform_device *pdev = to_platform_device(dev);
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if (priv->plat->init)
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- priv->plat->init(pdev);
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+ priv->plat->init(pdev, priv->plat->bsp_priv);
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return stmmac_resume(ndev);
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}
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diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
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index 33ace71..0a5a7ac 100644
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--- a/include/linux/stmmac.h
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+++ b/include/linux/stmmac.h
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@@ -113,8 +113,10 @@ struct plat_stmmacenet_data {
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int max_speed;
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void (*fix_mac_speed)(void *priv, unsigned int speed);
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void (*bus_setup)(void __iomem *ioaddr);
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- int (*init)(struct platform_device *pdev);
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- void (*exit)(struct platform_device *pdev);
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+ void *(*setup)(struct platform_device *pdev);
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+ void (*free)(struct platform_device *pdev, void *priv);
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+ int (*init)(struct platform_device *pdev, void *priv);
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+ void (*exit)(struct platform_device *pdev, void *priv);
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void *custom_cfg;
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void *custom_data;
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void *bsp_priv;
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--
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1.8.5.5
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