From: Linus Torvalds Date: Thu, 2 May 2013 21:38:53 +0000 (-0700) Subject: Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa... X-Git-Tag: v3.10-rc1~117 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=99bece775f988a4ee21ad3db9fd413caf1704ff6;p=profile%2Fcommon%2Fkernel-common.git Merge branch 'i2c/for-next' of git://git./linux/kernel/git/wsa/linux Pull i2c changes from Wolfram Sang: - an arbitration driver. While the driver is quite simple, it caused discussion if we need additional arbitration on top of the one specified in the I2C standard. Conclusion is that I accept a few generic mechanisms, but not very specific ones. - the core lost the detach_adapter() call. It has no users anymore and was in the way for other cleanups. attach_adapter() is sadly still there since there are users waiting to be converted. - the core gained a bus recovery infrastructure. I2C defines a way to recover if the data line is stalled. This mechanism is now in the core and drivers can now pass some data to make use of it. - bigger driver cleanups for designware, s3c2410 - removing superfluous refcounting from drivers - removing Ben Dooks as second maintainer due to inactivity. Thanks for all your work so far, Ben! - bugfixes, feature additions, devicetree fixups, simplifications... * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (38 commits) i2c: xiic: must always write 16-bit words to TX_FIFO i2c: octeon: use HZ in timeout value i2c: octeon: Fix i2c fail problem when a process is terminated by a signal i2c: designware-pci: drop superfluous {get|put}_device i2c: designware-plat: drop superfluous {get|put}_device i2c: davinci: drop superfluous {get|put}_device MAINTAINERS: Ben Dooks is inactive regarding I2C i2c: mux: Add i2c-arb-gpio-challenge 'mux' driver i2c: at91: convert to dma_request_slave_channel_compat() i2c: mxs: do error checking and handling in PIO mode i2c: mxs: remove races in PIO code i2c-designware: switch to use runtime PM autosuspend i2c-designware: use usleep_range() in the busy-loop i2c-designware: enable/disable the controller properly i2c-designware: use dynamic adapter numbering on Lynxpoint i2c-designware-pci: use managed functions pcim_* and devm_* i2c-designware-pci: use dev_err() instead of printk() i2c-designware: move to managed functions (devm_*) i2c: remove CONFIG_HOTPLUG ifdefs i2c: s3c2410: Add SMBus emulation for block read ... --- 99bece775f988a4ee21ad3db9fd413caf1704ff6 diff --cc arch/arm/mach-tegra/tegra.c index 84deeab,0000000..9cf1ab1 mode 100644,000000..100644 --- a/arch/arm/mach-tegra/tegra.c +++ b/arch/arm/mach-tegra/tegra.c @@@ -1,186 -1,0 +1,184 @@@ +/* + * NVIDIA Tegra SoC device tree board support + * + * Copyright (C) 2011, 2013, NVIDIA Corporation + * Copyright (C) 2010 Secret Lab Technologies, Ltd. + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include - #include - #include +#include +#include +#include + +#include +#include +#include +#include + +#include "board.h" +#include "common.h" +#include "fuse.h" +#include "iomap.h" + +static struct tegra_ehci_platform_data tegra_ehci1_pdata = { + .operating_mode = TEGRA_USB_OTG, + .power_down_on_bus_suspend = 1, + .vbus_gpio = -1, +}; + +static struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = { + .reset_gpio = -1, + .clk = "cdev2", +}; + +static struct tegra_ehci_platform_data tegra_ehci2_pdata = { + .phy_config = &tegra_ehci2_ulpi_phy_config, + .operating_mode = TEGRA_USB_HOST, + .power_down_on_bus_suspend = 1, + .vbus_gpio = -1, +}; + +static struct tegra_ehci_platform_data tegra_ehci3_pdata = { + .operating_mode = TEGRA_USB_HOST, + .power_down_on_bus_suspend = 1, + .vbus_gpio = -1, +}; + +static struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5000000, "tegra-ehci.0", + &tegra_ehci1_pdata), + OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5004000, "tegra-ehci.1", + &tegra_ehci2_pdata), + OF_DEV_AUXDATA("nvidia,tegra20-ehci", 0xC5008000, "tegra-ehci.2", + &tegra_ehci3_pdata), + {} +}; + +static void __init tegra_dt_init(void) +{ + struct soc_device_attribute *soc_dev_attr; + struct soc_device *soc_dev; + struct device *parent = NULL; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + goto out; + + soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra"); + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", tegra_revision); + soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%d", tegra_chip_id); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->family); + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr->soc_id); + kfree(soc_dev_attr); + goto out; + } + + parent = soc_device_to_device(soc_dev); + + /* + * Finished with the static registrations now; fill in the missing + * devices + */ +out: + of_platform_populate(NULL, of_default_bus_match_table, + tegra20_auxdata_lookup, parent); +} + +static void __init trimslice_init(void) +{ +#ifdef CONFIG_TEGRA_PCI + int ret; + + ret = tegra_pcie_init(true, true); + if (ret) + pr_err("tegra_pci_init() failed: %d\n", ret); +#endif +} + +static void __init harmony_init(void) +{ +#ifdef CONFIG_TEGRA_PCI + int ret; + + ret = harmony_pcie_init(); + if (ret) + pr_err("harmony_pcie_init() failed: %d\n", ret); +#endif +} + +static void __init paz00_init(void) +{ + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) + tegra_paz00_wifikill_init(); +} + +static struct { + char *machine; + void (*init)(void); +} board_init_funcs[] = { + { "compulab,trimslice", trimslice_init }, + { "nvidia,harmony", harmony_init }, + { "compal,paz00", paz00_init }, +}; + +static void __init tegra_dt_init_late(void) +{ + int i; + + tegra_init_late(); + + for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) { + if (of_machine_is_compatible(board_init_funcs[i].machine)) { + board_init_funcs[i].init(); + break; + } + } +} + +static const char * const tegra_dt_board_compat[] = { + "nvidia,tegra114", + "nvidia,tegra30", + "nvidia,tegra20", + NULL +}; + +DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)") + .map_io = tegra_map_common_io, + .smp = smp_ops(tegra_smp_ops), + .init_early = tegra_init_early, + .init_irq = tegra_dt_init_irq, + .init_time = clocksource_of_init, + .init_machine = tegra_dt_init, + .init_late = tegra_dt_init_late, + .restart = tegra_assert_system_reset, + .dt_compat = tegra_dt_board_compat, +MACHINE_END diff --cc drivers/media/pci/bt8xx/bttv-i2c.c index b7c52dc,c63c643..d43911d --- a/drivers/media/pci/bt8xx/bttv-i2c.c +++ b/drivers/media/pci/bt8xx/bttv-i2c.c @@@ -394,11 -394,3 +394,11 @@@ int init_bttv_i2c(struct bttv *btv return btv->i2c_rc; } + +int fini_bttv_i2c(struct bttv *btv) +{ - if (0 != btv->i2c_rc) - return 0; ++ if (btv->i2c_rc == 0) ++ i2c_del_adapter(&btv->c.i2c_adap); + - return i2c_del_adapter(&btv->c.i2c_adap); ++ return 0; +} diff --cc drivers/staging/media/go7007/go7007-driver.c index a5ca99d,6f83c52..3640df0 --- a/drivers/staging/media/go7007/go7007-driver.c +++ b/drivers/staging/media/go7007/go7007-driver.c @@@ -208,50 -201,13 +208,47 @@@ static int init_i2c_module(struct i2c_a { struct go7007 *go = i2c_get_adapdata(adapter); struct v4l2_device *v4l2_dev = &go->v4l2_dev; - - if (v4l2_i2c_new_subdev(v4l2_dev, adapter, type, addr, NULL)) + struct v4l2_subdev *sd; + struct i2c_board_info info; + + memset(&info, 0, sizeof(info)); + strlcpy(info.type, i2c->type, sizeof(info.type)); + info.addr = i2c->addr; + info.flags = i2c->flags; + + sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL); + if (sd) { + if (i2c->is_video) + go->sd_video = sd; + if (i2c->is_audio) + go->sd_audio = sd; return 0; + } + + printk(KERN_INFO "go7007: probing for module i2c:%s failed\n", i2c->type); + return -EINVAL; +} + +/* + * Detach and unregister the encoder. The go7007 struct won't be freed + * until v4l2 finishes releasing its resources and all associated fds are + * closed by applications. + */ +static void go7007_remove(struct v4l2_device *v4l2_dev) +{ + struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev); + + v4l2_device_unregister(v4l2_dev); + if (go->hpi_ops->release) + go->hpi_ops->release(go); + if (go->i2c_adapter_online) { - if (i2c_del_adapter(&go->i2c_adapter) == 0) - go->i2c_adapter_online = 0; - else - v4l2_err(&go->v4l2_dev, - "error removing I2C adapter!\n"); ++ i2c_del_adapter(&go->i2c_adapter); ++ go->i2c_adapter_online = 0; + } - dev_info(&adapter->dev, - "go7007: probing for module i2c:%s failed\n", type); - return -1; + kfree(go->boot_fw); + go7007_v4l2_remove(go); + kfree(go); } /*