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linux-sg2042/include/soc/tegra/fuse.h

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ARM: tegra: add function to read chipid Add function to read chip id from APB MISC registers. This function will also get called from clock driver to flush write operations on apb bus. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-11 15:46:19 +08:00
/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
ARM: tegra: Move includes to include/soc/tegra In order to not clutter the include/linux directory with SoC specific headers, move the Tegra-specific headers out into a separate directory. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17 19:17:24 +08:00
#ifndef __SOC_TEGRA_FUSE_H__
#define __SOC_TEGRA_FUSE_H__
ARM: tegra: add function to read chipid Add function to read chip id from APB MISC registers. This function will also get called from clock driver to flush write operations on apb bus. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-11 15:46:19 +08:00
ARM: tegra: Use a function to get the chip ID Instead of using a simple variable access to get at the Tegra chip ID, use a function so that we can run additional code. This can be used to determine where the chip ID is being accessed without being available. That in turn will be handy for resolving boot sequence dependencies in order to convert more code to regular initcalls rather than a sequence fixed by Tegra SoC setup code. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-11 15:52:41 +08:00
#define TEGRA20 0x20
#define TEGRA30 0x30
#define TEGRA114 0x35
#define TEGRA124 0x40
#ifndef __ASSEMBLY__
ARM: tegra: add function to read chipid Add function to read chip id from APB MISC registers. This function will also get called from clock driver to flush write operations on apb bus. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-11 15:46:19 +08:00
u32 tegra_read_chipid(void);
ARM: tegra: Use a function to get the chip ID Instead of using a simple variable access to get at the Tegra chip ID, use a function so that we can run additional code. This can be used to determine where the chip ID is being accessed without being available. That in turn will be handy for resolving boot sequence dependencies in order to convert more code to regular initcalls rather than a sequence fixed by Tegra SoC setup code. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-11 15:52:41 +08:00
u8 tegra_get_chip_id(void);
ARM: tegra: export apb dma readl/writel Export APB DMA readl and writel. These are needed because we can't access the fuses directly on Tegra20 without potentially causing a system hang. Also have the APB DMA readl and writel return an error in case of a read failure instead of just returning zero or ignore write failures. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-06-12 23:36:35 +08:00
#if defined(CONFIG_TEGRA20_APB_DMA)
int tegra_apb_readl_using_dma(unsigned long offset, u32 *value);
int tegra_apb_writel_using_dma(u32 value, unsigned long offset);
#else
static inline int tegra_apb_readl_using_dma(unsigned long offset, u32 *value)
{
return -EINVAL;
}
static inline int tegra_apb_writel_using_dma(u32 value, unsigned long offset)
{
return -EINVAL;
}
#endif /* CONFIG_TEGRA20_APB_DMA */
ARM: tegra: Use a function to get the chip ID Instead of using a simple variable access to get at the Tegra chip ID, use a function so that we can run additional code. This can be used to determine where the chip ID is being accessed without being available. That in turn will be handy for resolving boot sequence dependencies in order to convert more code to regular initcalls rather than a sequence fixed by Tegra SoC setup code. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-11 15:52:41 +08:00
#endif /* __ASSEMBLY__ */
ARM: tegra: add function to read chipid Add function to read chip id from APB MISC registers. This function will also get called from clock driver to flush write operations on apb bus. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-11 15:46:19 +08:00
ARM: tegra: Move includes to include/soc/tegra In order to not clutter the include/linux directory with SoC specific headers, move the Tegra-specific headers out into a separate directory. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17 19:17:24 +08:00
#endif /* __SOC_TEGRA_FUSE_H__ */