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200 lines
5.8 KiB
200 lines
5.8 KiB
![]()
6 years ago
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From 5a1c18b761ddb299a06746948b9ec2814b04fa92 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Wed, 2 Jan 2019 00:00:01 +0100
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Subject: [PATCH] bcma: keep a direct pointer to the struct device
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Accessing struct device is pretty useful/common so having a direct
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pointer:
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1) Simplifies some code
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2) Makes bcma_bus_get_host_dev() unneeded
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3) Allows further improvements like using dev_* printing helpers
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/bcma/bcma_private.h | 1 -
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drivers/bcma/driver_gpio.c | 2 +-
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drivers/bcma/host_pci.c | 2 ++
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drivers/bcma/host_soc.c | 4 ++--
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drivers/bcma/main.c | 45 +++++++++----------------------------
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include/linux/bcma/bcma.h | 11 +++------
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6 files changed, 18 insertions(+), 47 deletions(-)
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--- a/drivers/bcma/bcma_private.h
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+++ b/drivers/bcma/bcma_private.h
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@@ -33,7 +33,6 @@ int __init bcma_bus_early_register(struc
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int bcma_bus_suspend(struct bcma_bus *bus);
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int bcma_bus_resume(struct bcma_bus *bus);
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#endif
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-struct device *bcma_bus_get_host_dev(struct bcma_bus *bus);
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/* scan.c */
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void bcma_detect_chip(struct bcma_bus *bus);
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--- a/drivers/bcma/driver_gpio.c
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+++ b/drivers/bcma/driver_gpio.c
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@@ -183,7 +183,7 @@ int bcma_gpio_init(struct bcma_drv_cc *c
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chip->direction_input = bcma_gpio_direction_input;
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chip->direction_output = bcma_gpio_direction_output;
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chip->owner = THIS_MODULE;
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- chip->parent = bcma_bus_get_host_dev(bus);
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+ chip->parent = bus->dev;
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#if IS_BUILTIN(CONFIG_OF)
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chip->of_node = cc->core->dev.of_node;
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#endif
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--- a/drivers/bcma/host_pci.c
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+++ b/drivers/bcma/host_pci.c
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@@ -196,6 +196,8 @@ static int bcma_host_pci_probe(struct pc
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goto err_pci_release_regions;
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}
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+ bus->dev = &dev->dev;
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+
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/* Map MMIO */
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err = -ENOMEM;
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bus->mmio = pci_iomap(dev, 0, ~0UL);
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--- a/drivers/bcma/host_soc.c
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+++ b/drivers/bcma/host_soc.c
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@@ -179,7 +179,6 @@ int __init bcma_host_soc_register(struct
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/* Host specific */
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bus->hosttype = BCMA_HOSTTYPE_SOC;
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bus->ops = &bcma_host_soc_ops;
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- bus->host_pdev = NULL;
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/* Initialize struct, detect chip */
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bcma_init_bus(bus);
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@@ -213,6 +212,8 @@ static int bcma_host_soc_probe(struct pl
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if (!bus)
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return -ENOMEM;
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+ bus->dev = dev;
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+
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/* Map MMIO */
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bus->mmio = of_iomap(np, 0);
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if (!bus->mmio)
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@@ -221,7 +222,6 @@ static int bcma_host_soc_probe(struct pl
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/* Host specific */
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bus->hosttype = BCMA_HOSTTYPE_SOC;
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bus->ops = &bcma_host_soc_ops;
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- bus->host_pdev = pdev;
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/* Initialize struct, detect chip */
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bcma_init_bus(bus);
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--- a/drivers/bcma/main.c
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+++ b/drivers/bcma/main.c
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@@ -223,8 +223,8 @@ unsigned int bcma_core_irq(struct bcma_d
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mips_irq = bcma_core_mips_irq(core);
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return mips_irq <= 4 ? mips_irq + 2 : 0;
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}
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- if (bus->host_pdev)
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- return bcma_of_get_irq(&bus->host_pdev->dev, core, num);
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+ if (bus->dev)
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+ return bcma_of_get_irq(bus->dev, core, num);
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return 0;
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case BCMA_HOSTTYPE_SDIO:
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return 0;
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@@ -239,18 +239,18 @@ void bcma_prepare_core(struct bcma_bus *
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core->dev.release = bcma_release_core_dev;
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core->dev.bus = &bcma_bus_type;
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dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
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- core->dev.parent = bcma_bus_get_host_dev(bus);
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- if (core->dev.parent)
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- bcma_of_fill_device(core->dev.parent, core);
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+ core->dev.parent = bus->dev;
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+ if (bus->dev)
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+ bcma_of_fill_device(bus->dev, core);
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switch (bus->hosttype) {
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case BCMA_HOSTTYPE_PCI:
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- core->dma_dev = &bus->host_pci->dev;
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+ core->dma_dev = bus->dev;
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core->irq = bus->host_pci->irq;
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break;
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case BCMA_HOSTTYPE_SOC:
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- if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) {
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- core->dma_dev = &bus->host_pdev->dev;
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+ if (IS_ENABLED(CONFIG_OF) && bus->dev) {
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+ core->dma_dev = bus->dev;
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} else {
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core->dev.dma_mask = &core->dev.coherent_dma_mask;
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core->dma_dev = &core->dev;
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@@ -261,28 +261,6 @@ void bcma_prepare_core(struct bcma_bus *
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}
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}
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-struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
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-{
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- switch (bus->hosttype) {
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- case BCMA_HOSTTYPE_PCI:
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- if (bus->host_pci)
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- return &bus->host_pci->dev;
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- else
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- return NULL;
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- case BCMA_HOSTTYPE_SOC:
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- if (bus->host_pdev)
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- return &bus->host_pdev->dev;
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- else
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- return NULL;
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- case BCMA_HOSTTYPE_SDIO:
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- if (bus->host_sdio)
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- return &bus->host_sdio->dev;
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- else
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- return NULL;
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- }
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- return NULL;
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-}
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-
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void bcma_init_bus(struct bcma_bus *bus)
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{
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mutex_lock(&bcma_buses_mutex);
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@@ -402,7 +380,6 @@ int bcma_bus_register(struct bcma_bus *b
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{
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int err;
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struct bcma_device *core;
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- struct device *dev;
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/* Scan for devices (cores) */
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err = bcma_bus_scan(bus);
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@@ -425,10 +402,8 @@ int bcma_bus_register(struct bcma_bus *b
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bcma_core_pci_early_init(&bus->drv_pci[0]);
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}
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- dev = bcma_bus_get_host_dev(bus);
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- if (dev) {
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- of_platform_default_populate(dev->of_node, NULL, dev);
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- }
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+ if (bus->dev)
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+ of_platform_default_populate(bus->dev->of_node, NULL, bus->dev);
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/* Cores providing flash access go before SPROM init */
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list_for_each_entry(core, &bus->cores, list) {
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--- a/include/linux/bcma/bcma.h
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+++ b/include/linux/bcma/bcma.h
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@@ -332,6 +332,8 @@ extern int bcma_arch_register_fallback_s
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struct ssb_sprom *out));
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struct bcma_bus {
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+ struct device *dev;
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+
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/* The MMIO area. */
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void __iomem *mmio;
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@@ -339,14 +341,7 @@ struct bcma_bus {
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enum bcma_hosttype hosttype;
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bool host_is_pcie2; /* Used for BCMA_HOSTTYPE_PCI only */
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- union {
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- /* Pointer to the PCI bus (only for BCMA_HOSTTYPE_PCI) */
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- struct pci_dev *host_pci;
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- /* Pointer to the SDIO device (only for BCMA_HOSTTYPE_SDIO) */
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- struct sdio_func *host_sdio;
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- /* Pointer to platform device (only for BCMA_HOSTTYPE_SOC) */
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- struct platform_device *host_pdev;
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- };
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+ struct pci_dev *host_pci; /* PCI bus pointer (BCMA_HOSTTYPE_PCI only) */
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struct bcma_chipinfo chipinfo;
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