linux/drivers/soc, branch v3.17

drivers/soc: qcom: do not disable the iface clock in probe

2014-09-24T04:38:32Z

since commit 31964ffebbb9 ("tty: serial: msm: Remove direct access to GSBI")' serial hangs if earlyprintk are enabled. This hang is noticed only when the GSBI driver is probed and all the earlyprintks before gsbi probe are seen on the console. The reason why it hangs is because GSBI driver disables hclk in its probe function without realizing that the serial IP might be in use by a bootconsole. As gsbi driver disables the clock in probe the bootconsole locks up. Turning off hclk's could be dangerous if there are system components like earlyprintk using the hclk. This patch fixes the issue by delegating the clock management to probe and remove functions in gsbi rather than disabling the clock in probe. More detailed problem description can be found here: http://www.spinics.net/lists/linux-arm-msm/msg10589.html Tested-by: Linus Walleij Signed-off-by: Srinivas Kandagatla Signed-off-by: Olof Johansson

ARM: tegra: Convert PMC to a driver

2014-07-17T12:58:43Z

This commit converts the PMC support code to a platform driver. Because the boot process needs to call into this driver very early, also set up a minimal environment via an early initcall. Signed-off-by: Thierry Reding

soc/tegra: fuse: Set up in early initcall

2014-07-17T12:58:42Z

Rather than rely on explicit initialization order called from SoC setup code, use a plain initcall and rely on initcall ordering to take care of dependencies. This driver exposes some functionality (querying the chip ID) needed at very early stages of the boot process. An early initcall is good enough provided that some of the dependencies are deferred to later stages. To make sure any abuses are easily caught, output a warning message if the chip ID is queried while it can't be read yet. Signed-off-by: Thierry Reding

soc/tegra: Implement runtime check for Tegra SoCs

2014-07-17T12:58:41Z

Subsequent patches will move some of the initialization code from SoC setup code to regular initcalls. To prevent breakage on other SoCs in multi-platform builds, these initcalls need to check that they indeed run on Tegra. Signed-off-by: Thierry Reding

soc/tegra: fuse: fix dummy functions

2014-07-17T12:38:29Z

The Tegra fuse header's dummy functions for the case where Tegra20 is disabled are inconsistent with the correct prototypes, and have some syntax errors. Fix these. While at it, fix the indentation level of the dummy function bodies. Fixes: 783c8f4c8445 ("soc/tegra: Add efuse driver for Tegra") Cc: Peter De Schrijver Signed-off-by: Stephen Warren Signed-off-by: Thierry Reding

soc/tegra: fuse: move APB DMA into Tegra20 fuse driver

2014-07-17T12:37:12Z

The Tegra20 fuse driver is the only user of tegra_apb_readl_using_dma(). Therefore we can simply the code by incorporating the APB DMA handling into the driver directly. tegra_apb_writel_using_dma() is dropped because there are no users. Signed-off-by: Peter De Schrijver Signed-off-by: Stephen Warren Signed-off-by: Thierry Reding

soc/tegra: Add efuse driver for Tegra

2014-07-17T12:36:01Z

Implement fuse driver for Tegra20, Tegra30, Tegra114 and Tegra124. This replaces functionality previously provided in arch/arm/mach-tegra, which is removed in this patch. While at it, move the only user of the global tegra_revision variable over to tegra_sku_info.revision and export tegra_fuse_readl() to allow drivers to read calibration fuses. Signed-off-by: Peter De Schrijver Signed-off-by: Stephen Warren Signed-off-by: Thierry Reding

soc: qcom: fix of_device_id table

2014-05-26T19:27:09Z

The match tables must be zero-terminated, and Kbuild now helpfully fails to link the kernel if that isn't the case. Signed-off-by: Arnd Bergmann

soc: qcom: Add GSBI driver

2014-05-23T16:38:04Z

The GSBI (General Serial Bus Interface) driver controls the overarching configuration of the shared serial bus infrastructure on APQ8064, IPQ8064, and earlier QCOM processors. The GSBI supports UART, I2C, SPI, and UIM functionality in various combinations. Signed-off-by: Andy Gross Signed-off-by: Kumar Gala

soc: Introduce drivers/soc place-holder for SOC specific drivers

2014-05-23T16:37:46Z

Based on earlier thread "https://lkml.org/lkml/2013/10/7/662" and discussion at Kernel Summit'2013, it was agreed to create 'driver/soc' for drivers which are quite SOC specific. Further discussion on the subject is in response to the earlier version of the patch is here: http://lwn.net/Articles/588942/ Cc: Greg Kroah-Hartman Cc: Kumar Gala Cc: Paul Walmsley Cc: Olof Johansson Cc: Arnd Bergmann Signed-off-by: Sandeep Nair Signed-off-by: Santosh Shilimkar Signed-off-by: Kumar Gala