ceca718f21
From Stephen Warren: ARM: tegra: USB driver cleanup The Tegra USB driver has a number of issues: 1) The PHY driver isn't a true platform device, and doesn't implement the standard USB PHY API. 2) struct device instance numbers were used to make decisions in the driver, rather than being parameterized by DT or platform data. This pull request solves issue (2), and lays the groundwork for solving issue (1). The work on issue (1) involved introducing new DT nodes for the USB PHYs, which in turn interacted with the Tegra common clock framework changes, due to the move of clock lookups into device tree. Hence, these USB driver changes are taken through the Tegra tree with acks from USB maintainers. This pull request is based on the previous pull request, with tag tegra-for-3.9-soc-ccf. * tag 'tegra-for-3.9-soc-usb' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: usb: host: tegra: make use of PHY pointer of HCD ARM: tegra: Add reset GPIO information to PHY DT node usb: host: tegra: don't touch EMC clock usb: add APIs to access host registers from Tegra PHY USB: PHY: tegra: Get rid of instance number to differentiate PHY type USB: PHY: tegra: get rid of instance number to differentiate legacy controller ARM: tegra: add clocks properties to USB PHY nodes ARM: tegra: add DT nodes for Tegra USB PHY usb: phy: remove unused APIs from Tegra PHY. usb: host: tegra: Resetting PORT0 based on information received via DT. ARM: tegra: Add new DT property to USB node. usb: phy: use kzalloc to allocate struct tegra_usb_phy ARM: tegra: remove USB address related macros from iomap.h
156 lines
3.7 KiB
C
156 lines
3.7 KiB
C
/*
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* nVidia Tegra device tree board support
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*
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* Copyright (C) 2010 Secret Lab Technologies, Ltd.
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* Copyright (C) 2010 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/clocksource.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <linux/clk.h>
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#include <linux/dma-mapping.h>
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#include <linux/irqdomain.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_fdt.h>
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#include <linux/of_platform.h>
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#include <linux/pda_power.h>
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#include <linux/platform_data/tegra_usb.h>
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#include <linux/io.h>
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#include <linux/i2c.h>
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#include <linux/i2c-tegra.h>
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#include <linux/usb/tegra_usb_phy.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <asm/setup.h>
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#include "board.h"
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#include "common.h"
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#include "iomap.h"
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static struct tegra_ehci_platform_data tegra_ehci1_pdata = {
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.operating_mode = TEGRA_USB_OTG,
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.power_down_on_bus_suspend = 1,
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.vbus_gpio = -1,
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};
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static struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
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.reset_gpio = -1,
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.clk = "cdev2",
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};
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static struct tegra_ehci_platform_data tegra_ehci2_pdata = {
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.phy_config = &tegra_ehci2_ulpi_phy_config,
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.operating_mode = TEGRA_USB_HOST,
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.power_down_on_bus_suspend = 1,
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.vbus_gpio = -1,
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};
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static struct tegra_ehci_platform_data tegra_ehci3_pdata = {
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.operating_mode = TEGRA_USB_HOST,
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.power_down_on_bus_suspend = 1,
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.vbus_gpio = -1,
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};
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static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
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OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5000000, "tegra-ehci.0",
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&tegra_ehci1_pdata),
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OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5004000, "tegra-ehci.1",
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&tegra_ehci2_pdata),
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OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5008000, "tegra-ehci.2",
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&tegra_ehci3_pdata),
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{}
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};
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static void __init tegra_dt_init(void)
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{
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/*
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* Finished with the static registrations now; fill in the missing
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* devices
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*/
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of_platform_populate(NULL, of_default_bus_match_table,
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tegra20_auxdata_lookup, NULL);
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}
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static void __init trimslice_init(void)
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{
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#ifdef CONFIG_TEGRA_PCI
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int ret;
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ret = tegra_pcie_init(true, true);
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if (ret)
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pr_err("tegra_pci_init() failed: %d\n", ret);
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#endif
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}
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static void __init harmony_init(void)
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{
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#ifdef CONFIG_TEGRA_PCI
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int ret;
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ret = harmony_pcie_init();
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if (ret)
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pr_err("harmony_pcie_init() failed: %d\n", ret);
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#endif
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}
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static void __init paz00_init(void)
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{
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tegra_paz00_wifikill_init();
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}
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static struct {
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char *machine;
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void (*init)(void);
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} board_init_funcs[] = {
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{ "compulab,trimslice", trimslice_init },
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{ "nvidia,harmony", harmony_init },
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{ "compal,paz00", paz00_init },
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};
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static void __init tegra_dt_init_late(void)
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{
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int i;
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tegra_init_late();
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for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) {
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if (of_machine_is_compatible(board_init_funcs[i].machine)) {
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board_init_funcs[i].init();
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break;
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}
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}
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}
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static const char *tegra20_dt_board_compat[] = {
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"nvidia,tegra20",
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NULL
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};
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DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
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.map_io = tegra_map_common_io,
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.smp = smp_ops(tegra_smp_ops),
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.init_early = tegra20_init_early,
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.init_irq = tegra_dt_init_irq,
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.init_time = clocksource_of_init,
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.init_machine = tegra_dt_init,
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.init_late = tegra_dt_init_late,
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.restart = tegra_assert_system_reset,
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.dt_compat = tegra20_dt_board_compat,
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MACHINE_END
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