[PATCH] ARM: 2812/1: OMAP update 7c/11: Move arch-omap to plat-omap
Patch from Tony Lindgren
This patch move common OMAP code from arch-omap to plat-omap
directory.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-omap/sleep.S b/arch/arm/plat-omap/sleep.S
new file mode 100644
index 0000000..279490c
--- /dev/null
+++ b/arch/arm/plat-omap/sleep.S
@@ -0,0 +1,314 @@
+/*
+ * linux/arch/arm/plat-omap/sleep.S
+ *
+ * Low-level OMAP1510/1610 sleep/wakeUp support
+ *
+ * Initial SA1110 code:
+ * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com>
+ *
+ * Adapted for PXA by Nicolas Pitre:
+ * Copyright (c) 2002 Monta Vista Software, Inc.
+ *
+ * Support for OMAP1510/1610 by Dirk Behme <dirk.behme@de.bosch.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/arch/io.h>
+#include <asm/arch/pm.h>
+
+ .text
+
+/*
+ * Forces OMAP into idle state
+ *
+ * omapXXXX_idle_loop_suspend()
+ *
+ * Note: This code get's copied to internal SRAM at boot. When the OMAP
+ * wakes up it continues execution at the point it went to sleep.
+ *
+ * Note: Because of slightly different configuration values we have
+ * processor specific functions here.
+ */
+
+#ifdef CONFIG_ARCH_OMAP1510
+ENTRY(omap1510_idle_loop_suspend)
+
+ stmfd sp!, {r0 - r12, lr} @ save registers on stack
+
+ @ load base address of ARM_IDLECT1 and ARM_IDLECT2
+ mov r4, #CLKGEN_REG_ASM_BASE & 0xff000000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x00ff0000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x0000ff00
+
+ @ turn off clock domains
+ @ get ARM_IDLECT2 into r2
+ ldrh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ mov r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff
+ orr r5,r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff00
+ strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+
+ @ request ARM idle
+ @ get ARM_IDLECT1 into r1
+ ldrh r1, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+ orr r3, r1, #OMAP1510_IDLE_LOOP_REQUEST & 0xffff
+ strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ mov r5, #IDLE_WAIT_CYCLES & 0xff
+ orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00
+l_1510: subs r5, r5, #1
+ bne l_1510
+/*
+ * Let's wait for the next clock tick to wake us up.
+ */
+ mov r0, #0
+ mcr p15, 0, r0, c7, c0, 4 @ wait for interrupt
+/*
+ * omap1510_idle_loop_suspend()'s resume point.
+ *
+ * It will just start executing here, so we'll restore stuff from the
+ * stack, reset the ARM_IDLECT1 and ARM_IDLECT2.
+ */
+
+ @ restore ARM_IDLECT1 and ARM_IDLECT2 and return
+ @ r1 has ARM_IDLECT1 and r2 still has ARM_IDLECT2
+ strh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ strh r1, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ ldmfd sp!, {r0 - r12, pc} @ restore regs and return
+
+ENTRY(omap1510_idle_loop_suspend_sz)
+ .word . - omap1510_idle_loop_suspend
+#endif /* CONFIG_ARCH_OMAP1510 */
+
+#if defined(CONFIG_ARCH_OMAP16XX)
+ENTRY(omap1610_idle_loop_suspend)
+
+ stmfd sp!, {r0 - r12, lr} @ save registers on stack
+
+ @ load base address of ARM_IDLECT1 and ARM_IDLECT2
+ mov r4, #CLKGEN_REG_ASM_BASE & 0xff000000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x00ff0000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x0000ff00
+
+ @ turn off clock domains
+ @ get ARM_IDLECT2 into r2
+ ldrh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ mov r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff
+ orr r5,r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff00
+ strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+
+ @ request ARM idle
+ @ get ARM_IDLECT1 into r1
+ ldrh r1, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+ orr r3, r1, #OMAP1610_IDLE_LOOP_REQUEST & 0xffff
+ strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ mov r5, #IDLE_WAIT_CYCLES & 0xff
+ orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00
+l_1610: subs r5, r5, #1
+ bne l_1610
+/*
+ * Let's wait for the next clock tick to wake us up.
+ */
+ mov r0, #0
+ mcr p15, 0, r0, c7, c0, 4 @ wait for interrupt
+/*
+ * omap1610_idle_loop_suspend()'s resume point.
+ *
+ * It will just start executing here, so we'll restore stuff from the
+ * stack, reset the ARM_IDLECT1 and ARM_IDLECT2.
+ */
+
+ @ restore ARM_IDLECT1 and ARM_IDLECT2 and return
+ @ r1 has ARM_IDLECT1 and r2 still has ARM_IDLECT2
+ strh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ strh r1, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ ldmfd sp!, {r0 - r12, pc} @ restore regs and return
+
+ENTRY(omap1610_idle_loop_suspend_sz)
+ .word . - omap1610_idle_loop_suspend
+#endif /* CONFIG_ARCH_OMAP16XX */
+
+/*
+ * Forces OMAP into deep sleep state
+ *
+ * omapXXXX_cpu_suspend()
+ *
+ * The values of the registers ARM_IDLECT1 and ARM_IDLECT2 are passed
+ * as arg0 and arg1 from caller. arg0 is stored in register r0 and arg1
+ * in register r1.
+ *
+ * Note: This code get's copied to internal SRAM at boot. When the OMAP
+ * wakes up it continues execution at the point it went to sleep.
+ *
+ * Note: Because of errata work arounds we have processor specific functions
+ * here. They are mostly the same, but slightly different.
+ *
+ */
+
+#ifdef CONFIG_ARCH_OMAP1510
+ENTRY(omap1510_cpu_suspend)
+
+ @ save registers on stack
+ stmfd sp!, {r0 - r12, lr}
+
+ @ load base address of Traffic Controller
+ mov r4, #TCMIF_ASM_BASE & 0xff000000
+ orr r4, r4, #TCMIF_ASM_BASE & 0x00ff0000
+ orr r4, r4, #TCMIF_ASM_BASE & 0x0000ff00
+
+ @ work around errata of OMAP1510 PDE bit for TC shut down
+ @ clear PDE bit
+ ldr r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+ bic r5, r5, #PDE_BIT & 0xff
+ str r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+
+ @ set PWD_EN bit
+ and r5, r5, #PWD_EN_BIT & 0xff
+ str r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+
+ @ prepare to put SDRAM into self-refresh manually
+ ldr r5, [r4, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff]
+ orr r5, r5, #SELF_REFRESH_MODE & 0xff000000
+ orr r5, r5, #SELF_REFRESH_MODE & 0x000000ff
+ str r5, [r4, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff]
+
+ @ prepare to put EMIFS to Sleep
+ ldr r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+ orr r5, r5, #IDLE_EMIFS_REQUEST & 0xff
+ str r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+
+ @ load base address of ARM_IDLECT1 and ARM_IDLECT2
+ mov r4, #CLKGEN_REG_ASM_BASE & 0xff000000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x00ff0000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x0000ff00
+
+ @ turn off clock domains
+ mov r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff
+ orr r5,r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff00
+ strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+
+ @ request ARM idle
+ mov r3, #OMAP1510_DEEP_SLEEP_REQUEST & 0xff
+ orr r3, r3, #OMAP1510_DEEP_SLEEP_REQUEST & 0xff00
+ strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ mov r5, #IDLE_WAIT_CYCLES & 0xff
+ orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00
+l_1510_2:
+ subs r5, r5, #1
+ bne l_1510_2
+/*
+ * Let's wait for the next wake up event to wake us up. r0 can't be
+ * used here because r0 holds ARM_IDLECT1
+ */
+ mov r2, #0
+ mcr p15, 0, r2, c7, c0, 4 @ wait for interrupt
+/*
+ * omap1510_cpu_suspend()'s resume point.
+ *
+ * It will just start executing here, so we'll restore stuff from the
+ * stack, reset the ARM_IDLECT1 and ARM_IDLECT2.
+ */
+ strh r1, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ strh r0, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ @ restore regs and return
+ ldmfd sp!, {r0 - r12, pc}
+
+ENTRY(omap1510_cpu_suspend_sz)
+ .word . - omap1510_cpu_suspend
+#endif /* CONFIG_ARCH_OMAP1510 */
+
+#if defined(CONFIG_ARCH_OMAP16XX)
+ENTRY(omap1610_cpu_suspend)
+
+ @ save registers on stack
+ stmfd sp!, {r0 - r12, lr}
+
+ @ load base address of Traffic Controller
+ mov r4, #TCMIF_ASM_BASE & 0xff000000
+ orr r4, r4, #TCMIF_ASM_BASE & 0x00ff0000
+ orr r4, r4, #TCMIF_ASM_BASE & 0x0000ff00
+
+ @ prepare to put SDRAM into self-refresh manually
+ ldr r5, [r4, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff]
+ orr r5, r5, #SELF_REFRESH_MODE & 0xff000000
+ orr r5, r5, #SELF_REFRESH_MODE & 0x000000ff
+ str r5, [r4, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff]
+
+ @ prepare to put EMIFS to Sleep
+ ldr r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+ orr r5, r5, #IDLE_EMIFS_REQUEST & 0xff
+ str r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff]
+
+ @ load base address of ARM_IDLECT1 and ARM_IDLECT2
+ mov r4, #CLKGEN_REG_ASM_BASE & 0xff000000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x00ff0000
+ orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x0000ff00
+
+ @ turn off clock domains
+ mov r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff
+ orr r5,r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff00
+ strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+
+ @ work around errata of OMAP1610/5912. Enable (!) peripheral
+ @ clock to let the chip go into deep sleep
+ ldrh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ orr r5,r5, #EN_PERCK_BIT & 0xff
+ strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+
+ @ request ARM idle
+ mov r3, #OMAP1610_DEEP_SLEEP_REQUEST & 0xff
+ orr r3, r3, #OMAP1610_DEEP_SLEEP_REQUEST & 0xff00
+ strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ mov r5, #IDLE_WAIT_CYCLES & 0xff
+ orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00
+l_1610_2:
+ subs r5, r5, #1
+ bne l_1610_2
+/*
+ * Let's wait for the next wake up event to wake us up. r0 can't be
+ * used here because r0 holds ARM_IDLECT1
+ */
+ mov r2, #0
+ mcr p15, 0, r2, c7, c0, 4 @ wait for interrupt
+/*
+ * omap1610_cpu_suspend()'s resume point.
+ *
+ * It will just start executing here, so we'll restore stuff from the
+ * stack, reset the ARM_IDLECT1 and ARM_IDLECT2.
+ */
+ strh r1, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff]
+ strh r0, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff]
+
+ @ restore regs and return
+ ldmfd sp!, {r0 - r12, pc}
+
+ENTRY(omap1610_cpu_suspend_sz)
+ .word . - omap1610_cpu_suspend
+#endif /* CONFIG_ARCH_OMAP16XX */