/* driver_chipcommon_pmu.c */
u32 bcma_pmu_get_alp_clock(struct bcma_drv_cc *cc);
u32 bcma_pmu_get_cpu_clock(struct bcma_drv_cc *cc);
+@@ -84,6 +88,20 @@ extern int __init bcma_host_pci_init(voi
+ extern void __exit bcma_host_pci_exit(void);
+ #endif /* CONFIG_BCMA_HOST_PCI */
+
++/* host_soc.c */
++#if defined(CONFIG_BCMA_HOST_SOC) && defined(CONFIG_OF)
++extern int __init bcma_host_soc_register_driver(void);
++extern void __exit bcma_host_soc_unregister_driver(void);
++#else
++static inline int __init bcma_host_soc_register_driver(void)
++{
++ return 0;
++}
++static inline void __exit bcma_host_soc_unregister_driver(void)
++{
++}
++#endif /* CONFIG_BCMA_HOST_SOC && CONFIG_OF */
++
+ /* driver_pci.c */
+ u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address);
+
--- a/drivers/bcma/core.c
+++ b/drivers/bcma/core.c
@@ -9,6 +9,25 @@
chip->label = "bcma_gpio";
chip->owner = THIS_MODULE;
-@@ -95,8 +215,18 @@ int bcma_gpio_init(struct bcma_drv_cc *c
+@@ -95,8 +215,22 @@ int bcma_gpio_init(struct bcma_drv_cc *c
chip->set = bcma_gpio_set_value;
chip->direction_input = bcma_gpio_direction_input;
chip->direction_output = bcma_gpio_direction_output;
chip->to_irq = bcma_gpio_to_irq;
- chip->ngpio = 16;
+#endif
++#if IS_BUILTIN(CONFIG_OF)
++ if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC)
++ chip->of_node = cc->core->dev.of_node;
++#endif
+ switch (cc->core->bus->chipinfo.id) {
+ case BCMA_CHIP_ID_BCM5357:
+ case BCMA_CHIP_ID_BCM53572:
/* There is just one SoC in one device and its GPIO addresses should be
* deterministic to address them more easily. The other buses could get
* a random base number. */
-@@ -105,10 +235,21 @@ int bcma_gpio_init(struct bcma_drv_cc *c
+@@ -105,10 +239,21 @@ int bcma_gpio_init(struct bcma_drv_cc *c
else
chip->base = -1;
MODULE_DEVICE_TABLE(pci, bcma_pci_bridge_tbl);
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
-@@ -69,28 +69,36 @@ static u16 bcma_cc_core_id(struct bcma_b
+@@ -10,6 +10,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/bcma/bcma.h>
+ #include <linux/slab.h>
++#include <linux/of_address.h>
+
+ MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
+ MODULE_LICENSE("GPL");
+@@ -69,28 +70,36 @@ static u16 bcma_cc_core_id(struct bcma_b
return BCMA_CORE_CHIPCOMMON;
}
}
static void bcma_release_core_dev(struct device *dev)
-@@ -103,55 +111,78 @@ static void bcma_release_core_dev(struct
+@@ -103,55 +112,121 @@ static void bcma_release_core_dev(struct
kfree(core);
}
+ return false;
+}
+
++#ifdef CONFIG_OF
++static struct device_node *bcma_of_find_child_device(struct platform_device *parent,
++ struct bcma_device *core)
++{
++ struct device_node *node;
++ u64 size;
++ const __be32 *reg;
++
++ if (!parent || !parent->dev.of_node)
++ return NULL;
++
++ for_each_child_of_node(parent->dev.of_node, node) {
++ reg = of_get_address(node, 0, &size, NULL);
++ if (!reg)
++ continue;
++ if (of_translate_address(node, reg) == core->addr)
++ return node;
++ }
++ return NULL;
++}
++
++static void bcma_of_fill_device(struct platform_device *parent,
++ struct bcma_device *core)
++{
++ struct device_node *node;
++
++ node = bcma_of_find_child_device(parent, core);
++ if (node)
++ core->dev.of_node = node;
++}
++#else
++static void bcma_of_fill_device(struct platform_device *parent,
++ struct bcma_device *core)
++{
++}
++#endif /* CONFIG_OF */
++
+static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)
+{
+ int err;
+ break;
+ case BCMA_HOSTTYPE_SOC:
+ core->dev.dma_mask = &core->dev.coherent_dma_mask;
-+ core->dma_dev = &core->dev;
++ if (bus->host_pdev) {
++ core->dma_dev = &bus->host_pdev->dev;
++ core->dev.parent = &bus->host_pdev->dev;
++ bcma_of_fill_device(bus->host_pdev, core);
++ } else {
++ core->dma_dev = &core->dev;
++ }
+ break;
+ case BCMA_HOSTTYPE_SDIO:
+ break;
}
#ifdef CONFIG_BCMA_DRIVER_MIPS
-@@ -218,7 +249,7 @@ int bcma_bus_register(struct bcma_bus *b
+@@ -218,7 +293,7 @@ int bcma_bus_register(struct bcma_bus *b
err = bcma_bus_scan(bus);
if (err) {
bcma_err(bus, "Failed to scan: %d\n", err);
}
/* Early init CC core */
-@@ -228,6 +259,12 @@ int bcma_bus_register(struct bcma_bus *b
+@@ -228,6 +303,12 @@ int bcma_bus_register(struct bcma_bus *b
bcma_core_chipcommon_early_init(&bus->drv_cc);
}
/* Try to get SPROM */
err = bcma_sprom_get(bus);
if (err == -ENOENT) {
-@@ -242,6 +279,13 @@ int bcma_bus_register(struct bcma_bus *b
+@@ -242,6 +323,13 @@ int bcma_bus_register(struct bcma_bus *b
bcma_core_chipcommon_init(&bus->drv_cc);
}
/* Init MIPS core */
core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
if (core) {
-@@ -263,6 +307,13 @@ int bcma_bus_register(struct bcma_bus *b
+@@ -263,6 +351,13 @@ int bcma_bus_register(struct bcma_bus *b
bcma_core_pci_init(&bus->drv_pci[1]);
}
/* Init GBIT MAC COMMON core */
core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
if (core) {
-@@ -271,7 +322,7 @@ int bcma_bus_register(struct bcma_bus *b
+@@ -271,7 +366,7 @@ int bcma_bus_register(struct bcma_bus *b
}
/* Register found cores */
bcma_info(bus, "Bus registered\n");
-@@ -289,6 +340,8 @@ void bcma_bus_unregister(struct bcma_bus
+@@ -289,6 +384,8 @@ void bcma_bus_unregister(struct bcma_bus
else if (err)
bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
-@@ -308,8 +361,6 @@ int __init bcma_bus_early_register(struc
+@@ -308,8 +405,6 @@ int __init bcma_bus_early_register(struc
struct bcma_device *core;
struct bcma_device_id match;
match.manuf = BCMA_MANUF_BCM;
match.id = bcma_cc_core_id(bus);
match.class = BCMA_CL_SIM;
+@@ -468,6 +563,11 @@ static int __init bcma_modinit(void)
+ if (err)
+ return err;
+
++ err = bcma_host_soc_register_driver();
++ if (err) {
++ pr_err("SoC host initialization failed\n");
++ err = 0;
++ }
+ #ifdef CONFIG_BCMA_HOST_PCI
+ err = bcma_host_pci_init();
+ if (err) {
+@@ -485,6 +585,7 @@ static void __exit bcma_modexit(void)
+ #ifdef CONFIG_BCMA_HOST_PCI
+ bcma_host_pci_exit();
+ #endif
++ bcma_host_soc_unregister_driver();
+ bus_unregister(&bcma_bus_type);
+ }
+ module_exit(bcma_modexit)
--- a/drivers/bcma/scan.c
+++ b/drivers/bcma/scan.c
@@ -32,6 +32,18 @@ static const struct bcma_device_id_name
u32 wrap;
void __iomem *io_addr;
-@@ -310,11 +332,12 @@ struct bcma_bus {
+@@ -301,6 +323,8 @@ struct bcma_bus {
+ struct pci_dev *host_pci;
+ /* Pointer to the SDIO device (only for BCMA_HOSTTYPE_SDIO) */
+ struct sdio_func *host_sdio;
++ /* Pointer to platform device (only for BCMA_HOSTTYPE_SOC) */
++ struct platform_device *host_pdev;
+ };
+
+ struct bcma_chipinfo chipinfo;
+@@ -310,11 +334,12 @@ struct bcma_bus {
struct bcma_device *mapped_core;
struct list_head cores;
u8 nr_cores;
struct bcma_drv_mips drv_mips;
struct bcma_drv_gmac_cmn drv_gmac_cmn;
-@@ -400,7 +423,14 @@ static inline void bcma_maskset16(struct
+@@ -400,7 +425,14 @@ static inline void bcma_maskset16(struct
bcma_write16(cc, offset, (bcma_read16(cc, offset) & mask) | set);
}
void bcma_core_mips_early_init(struct bcma_drv_mips *mcore)
--- a/drivers/bcma/host_soc.c
+++ b/drivers/bcma/host_soc.c
-@@ -134,12 +134,16 @@ static void bcma_host_soc_block_write(st
+@@ -7,6 +7,9 @@
+
+ #include "bcma_private.h"
+ #include "scan.h"
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/of_address.h>
+ #include <linux/bcma/bcma.h>
+ #include <linux/bcma/bcma_soc.h>
+
+@@ -134,12 +137,16 @@ static void bcma_host_soc_block_write(st
static u32 bcma_host_soc_aread32(struct bcma_device *core, u16 offset)
{
writel(value, core->io_wrap + offset);
}
-@@ -161,7 +165,6 @@ static const struct bcma_host_ops bcma_h
+@@ -161,7 +168,6 @@ static const struct bcma_host_ops bcma_h
int __init bcma_host_soc_register(struct bcma_soc *soc)
{
struct bcma_bus *bus = &soc->bus;
/* iomap only first core. We have to read some register on this core
* to scan the bus.
-@@ -174,7 +177,18 @@ int __init bcma_host_soc_register(struct
+@@ -173,11 +179,100 @@ int __init bcma_host_soc_register(struct
+ /* Host specific */
bus->hosttype = BCMA_HOSTTYPE_SOC;
bus->ops = &bcma_host_soc_ops;
++ bus->host_pdev = NULL;
- /* Register */
+ /* Initialize struct, detect chip */
err = bcma_bus_early_register(bus, &soc->core_cc, &soc->core_mips);
if (err)
iounmap(bus->mmio);
+
+ return err;
+ }
++
++#ifdef CONFIG_OF
++static int bcma_host_soc_probe(struct platform_device *pdev)
++{
++ struct device *dev = &pdev->dev;
++ struct device_node *np = dev->of_node;
++ struct bcma_bus *bus;
++ int err;
++
++ /* Alloc */
++ bus = devm_kzalloc(dev, sizeof(*bus), GFP_KERNEL);
++ if (!bus)
++ return -ENOMEM;
++
++ /* Map MMIO */
++ bus->mmio = of_iomap(np, 0);
++ if (!bus->mmio)
++ return -ENOMEM;
++
++ /* Host specific */
++ bus->hosttype = BCMA_HOSTTYPE_SOC;
++ bus->ops = &bcma_host_soc_ops;
++ bus->host_pdev = pdev;
++
++ /* Initialize struct, detect chip */
++ bcma_init_bus(bus);
++
++ /* Register */
++ err = bcma_bus_register(bus);
++ if (err)
++ goto err_unmap_mmio;
++
++ platform_set_drvdata(pdev, bus);
++
++ return err;
++
++err_unmap_mmio:
++ iounmap(bus->mmio);
++ return err;
++}
++
++static int bcma_host_soc_remove(struct platform_device *pdev)
++{
++ struct bcma_bus *bus = platform_get_drvdata(pdev);
++
++ bcma_bus_unregister(bus);
++ iounmap(bus->mmio);
++ platform_set_drvdata(pdev, NULL);
++
++ return 0;
++}
++
++static const struct of_device_id bcma_host_soc_of_match[] = {
++ { .compatible = "brcm,bus-axi", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, bcma_host_soc_of_match);
++
++static struct platform_driver bcma_host_soc_driver = {
++ .driver = {
++ .name = "bcma-host-soc",
++ .of_match_table = bcma_host_soc_of_match,
++ },
++ .probe = bcma_host_soc_probe,
++ .remove = bcma_host_soc_remove,
++};
++
++int __init bcma_host_soc_register_driver(void)
++{
++ return platform_driver_register(&bcma_host_soc_driver);
++}
++
++void __exit bcma_host_soc_unregister_driver(void)
++{
++ platform_driver_unregister(&bcma_host_soc_driver);
++}
++#endif /* CONFIG_OF */
--- a/include/linux/bcma/bcma_regs.h
+++ b/include/linux/bcma/bcma_regs.h
@@ -39,6 +39,11 @@
panic("Failed to initialize BCMA bus (err %d)", err);
bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
+--- /dev/null
++++ b/Documentation/devicetree/bindings/bus/bcma.txt
+@@ -0,0 +1,32 @@
++Driver for ARM AXI Bus with Broadcom Plugins (bcma)
++
++Required properties:
++
++- compatible : brcm,bus-axi
++
++- reg : iomem address range of chipcommon core
++
++The cores on the AXI bus are automatically detected by bcma with the
++memory ranges they are using and they get registered afterwards.
++
++The top-level axi bus may contain children representing attached cores
++(devices). This is needed since some hardware details can't be auto
++detected (e.g. IRQ numbers). Also some of the cores may be responsible
++for extra things, e.g. ChipCommon providing access to the GPIO chip.
++
++Example:
++
++ axi@18000000 {
++ compatible = "brcm,bus-axi";
++ reg = <0x18000000 0x1000>;
++ ranges = <0x00000000 0x18000000 0x00100000>;
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ chipcommon {
++ reg = <0x00000000 0x1000>;
++
++ gpio-controller;
++ #gpio-cells = <2>;
++ };
++ };
projects / 15.05 / openwrt.git / blobdiff