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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-22 18:04:39 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-22 18:04:39 +0200 |
commit | d0440c59f52d31aa7f74ba8e35cc22ee96acea84 (patch) | |
tree | 199470b64cdc30e9f0f7ecd5286ff7cc2e0a969d /arch/arm/mach-msm/proc_comm.c | |
parent | Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm... (diff) | |
parent | Merge tag 'imx-cleanup-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
download | linux-d0440c59f52d31aa7f74ba8e35cc22ee96acea84.tar.xz linux-d0440c59f52d31aa7f74ba8e35cc22ee96acea84.zip |
Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Olof Johansson:
"We've got a fairly large cleanup branch this time. The bulk of this
is removal of non-DT platforms of several flavors:
- Atmel at91 platforms go full-DT, with removal of remaining
board-file based support
- OMAP removes legacy board files for three more platforms
- removal of non-DT mach-msm, newer Qualcomm platforms now live in
mach-qcom
- Freescale i.MX25 also removes non-DT platform support"
Most of the rest of the changes here are fallout from the above, i.e. for
example removal of drivers that now lack platforms, etc.
* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (58 commits)
mmc: Remove msm_sdcc driver
gpio: Remove gpio-msm-v1 driver
ARM: Remove mach-msm and associated ARM architecture code
ARM: shmobile: cpuidle: Remove the pointless default driver
ARM: davinci: dm646x: Add interrupt resource for McASPs
ARM: davinci: irqs: Correct McASP1 TX interrupt definition for DM646x
ARM: davinci: dm646x: Clean up the McASP DMA resources
ARM: davinci: devices-da8xx: Add support for McASP2 on da830
ARM: davinci: devices-da8xx: Clean up and correct the McASP device creation
ARM: davinci: devices-da8xx: Add interrupt resource to McASP structs
ARM: davinci: devices-da8xx: Add resource name for the McASP DMA request
ARM: OMAP2+: Remove legacy support for omap3 TouchBook
ARM: OMAP3: Remove legacy support for devkit8000
ARM: OMAP3: Remove legacy support for EMA-Tech Stalker board
ARM: shmobile: Consolidate the pm code for R-Car Gen2
ARM: shmobile: r8a7791: Correct SYSCIER value
ARM: shmobile: r8a7790: Correct SYSCIER value
ARM: at91: remove old setup
ARM: at91: sama5d4: remove useless map_io
ARM: at91: sama5 use SoC detection infrastructure
...
Diffstat (limited to 'arch/arm/mach-msm/proc_comm.c')
-rw-r--r-- | arch/arm/mach-msm/proc_comm.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/arch/arm/mach-msm/proc_comm.c b/arch/arm/mach-msm/proc_comm.c deleted file mode 100644 index 507f5ca80697..000000000000 --- a/arch/arm/mach-msm/proc_comm.c +++ /dev/null @@ -1,129 +0,0 @@ -/* arch/arm/mach-msm/proc_comm.c - * - * Copyright (C) 2007-2008 Google, Inc. - * Author: Brian Swetland <swetland@google.com> - * - * 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 <linux/delay.h> -#include <linux/errno.h> -#include <linux/io.h> -#include <linux/spinlock.h> -#include <mach/msm_iomap.h> - -#include "proc_comm.h" - -static inline void msm_a2m_int(uint32_t irq) -{ -#if defined(CONFIG_ARCH_MSM7X30) - writel(1 << irq, MSM_GCC_BASE + 0x8); -#else - writel(1, MSM_CSR_BASE + 0x400 + (irq * 4)); -#endif -} - -static inline void notify_other_proc_comm(void) -{ - msm_a2m_int(6); -} - -#define APP_COMMAND 0x00 -#define APP_STATUS 0x04 -#define APP_DATA1 0x08 -#define APP_DATA2 0x0C - -#define MDM_COMMAND 0x10 -#define MDM_STATUS 0x14 -#define MDM_DATA1 0x18 -#define MDM_DATA2 0x1C - -static DEFINE_SPINLOCK(proc_comm_lock); - -/* The higher level SMD support will install this to - * provide a way to check for and handle modem restart. - */ -int (*msm_check_for_modem_crash)(void); - -/* Poll for a state change, checking for possible - * modem crashes along the way (so we don't wait - * forever while the ARM9 is blowing up). - * - * Return an error in the event of a modem crash and - * restart so the msm_proc_comm() routine can restart - * the operation from the beginning. - */ -static int proc_comm_wait_for(void __iomem *addr, unsigned value) -{ - for (;;) { - if (readl(addr) == value) - return 0; - - if (msm_check_for_modem_crash) - if (msm_check_for_modem_crash()) - return -EAGAIN; - } -} - -int msm_proc_comm(unsigned cmd, unsigned *data1, unsigned *data2) -{ - void __iomem *base = MSM_SHARED_RAM_BASE; - unsigned long flags; - int ret; - - spin_lock_irqsave(&proc_comm_lock, flags); - - for (;;) { - if (proc_comm_wait_for(base + MDM_STATUS, PCOM_READY)) - continue; - - writel(cmd, base + APP_COMMAND); - writel(data1 ? *data1 : 0, base + APP_DATA1); - writel(data2 ? *data2 : 0, base + APP_DATA2); - - notify_other_proc_comm(); - - if (proc_comm_wait_for(base + APP_COMMAND, PCOM_CMD_DONE)) - continue; - - if (readl(base + APP_STATUS) != PCOM_CMD_FAIL) { - if (data1) - *data1 = readl(base + APP_DATA1); - if (data2) - *data2 = readl(base + APP_DATA2); - ret = 0; - } else { - ret = -EIO; - } - break; - } - - writel(PCOM_CMD_IDLE, base + APP_COMMAND); - - spin_unlock_irqrestore(&proc_comm_lock, flags); - - return ret; -} - -/* - * We need to wait for the ARM9 to at least partially boot - * up before we can continue. Since the ARM9 does resource - * allocation, if we dont' wait we could end up crashing or in - * and unknown state. This function should be called early to - * wait on the ARM9. - */ -void proc_comm_boot_wait(void) -{ - void __iomem *base = MSM_SHARED_RAM_BASE; - - proc_comm_wait_for(base + MDM_STATUS, PCOM_READY); - -} |