source "drivers/cpufreq/Kconfig"
+config CPU_VOLTAGE
+ bool "CPU Voltage scaling"
+ depends on EXPERIMENTAL
+ depends on CPU_FREQ
+ default n
+ help
+ Say Y here if you want CPU voltage scaling according to the CPU frequency.
+ This option violates the PLL BYPASS recommendation in the Blackfin Processor
+ manuals. There is a theoretical risk that during VDDINT transitions
+ the PLL may unlock.
+
endmenu
source "net/Kconfig"
#include <asm/reboot.h>
#include <asm/nand.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
#include <linux/spi/ad7877.h>
/*
.resource = &bfin_gpios_resources,
};
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_100, 400000000),
+ VRPAIR(VLEV_105, 426000000),
+ VRPAIR(VLEV_110, 500000000),
+ VRPAIR(VLEV_115, 533000000),
+ VRPAIR(VLEV_120, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *stamp_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_MTD_NAND_BF5XX) || defined(CONFIG_MTD_NAND_BF5XX_MODULE)
&bf5xx_nand_device,
#endif
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
/*
* Name the Board for the /proc/cpuinfo
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 376000000),
+ VRPAIR(VLEV_095, 426000000),
+ VRPAIR(VLEV_100, 426000000),
+ VRPAIR(VLEV_105, 476000000),
+ VRPAIR(VLEV_110, 476000000),
+ VRPAIR(VLEV_115, 476000000),
+ VRPAIR(VLEV_120, 600000000),
+ VRPAIR(VLEV_125, 600000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *cm_bf533_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
&bfin_uart_device,
#endif
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
/*
* Name the Board for the /proc/cpuinfo
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 376000000),
+ VRPAIR(VLEV_095, 426000000),
+ VRPAIR(VLEV_100, 426000000),
+ VRPAIR(VLEV_105, 476000000),
+ VRPAIR(VLEV_110, 476000000),
+ VRPAIR(VLEV_115, 476000000),
+ VRPAIR(VLEV_120, 600000000),
+ VRPAIR(VLEV_125, 600000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *ezkit_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
&smc91x_device,
#endif
#include <asm/bfin5xx_spi.h>
#include <asm/reboot.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
/*
* Name the Board for the /proc/cpuinfo
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 376000000),
+ VRPAIR(VLEV_095, 426000000),
+ VRPAIR(VLEV_100, 426000000),
+ VRPAIR(VLEV_105, 476000000),
+ VRPAIR(VLEV_110, 476000000),
+ VRPAIR(VLEV_115, 476000000),
+ VRPAIR(VLEV_120, 600000000),
+ VRPAIR(VLEV_125, 600000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *stamp_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
&rtc_device,
#endif
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
/*
* Name the Board for the /proc/cpuinfo
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 376000000),
+ VRPAIR(VLEV_095, 426000000),
+ VRPAIR(VLEV_100, 426000000),
+ VRPAIR(VLEV_105, 476000000),
+ VRPAIR(VLEV_110, 476000000),
+ VRPAIR(VLEV_115, 476000000),
+ VRPAIR(VLEV_120, 500000000),
+ VRPAIR(VLEV_125, 533000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *cm_bf537_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_FB_HITACHI_TX09) || defined(CONFIG_FB_HITACHI_TX09_MODULE)
&hitachi_fb_device,
#endif
#include <asm/bfin5xx_spi.h>
#include <asm/reboot.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
#include <linux/spi/ad7877.h>
/*
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 376000000),
+ VRPAIR(VLEV_095, 426000000),
+ VRPAIR(VLEV_100, 426000000),
+ VRPAIR(VLEV_105, 476000000),
+ VRPAIR(VLEV_110, 476000000),
+ VRPAIR(VLEV_115, 476000000),
+ VRPAIR(VLEV_120, 500000000),
+ VRPAIR(VLEV_125, 533000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *stamp_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_BFIN_CFPCMCIA) || defined(CONFIG_BFIN_CFPCMCIA_MODULE)
&bfin_pcmcia_cf_device,
#endif
#include <asm/nand.h>
#include <asm/portmux.h>
#include <asm/mach/bf54x_keys.h>
+#include <asm/dpmc.h>
#include <linux/input.h>
#include <linux/spi/ad7877.h>
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+/*
+ * Internal VLEV BF54XSBBC1533
+ ****temporarily using these values until data sheet is updated
+ */
+ VRPAIR(VLEV_085, 150000000),
+ VRPAIR(VLEV_090, 250000000),
+ VRPAIR(VLEV_110, 276000000),
+ VRPAIR(VLEV_115, 301000000),
+ VRPAIR(VLEV_120, 525000000),
+ VRPAIR(VLEV_125, 550000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *cm_bf548_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
&rtc_device,
#endif
#include <asm/dma.h>
#include <asm/gpio.h>
#include <asm/nand.h>
+#include <asm/dpmc.h>
#include <asm/portmux.h>
#include <asm/mach/bf54x_keys.h>
#include <linux/input.h>
.resource = &bfin_gpios_resources,
};
+static const unsigned int cclk_vlev_datasheet[] =
+{
+/*
+ * Internal VLEV BF54XSBBC1533
+ ****temporarily using these values until data sheet is updated
+ */
+ VRPAIR(VLEV_085, 150000000),
+ VRPAIR(VLEV_090, 250000000),
+ VRPAIR(VLEV_110, 276000000),
+ VRPAIR(VLEV_115, 301000000),
+ VRPAIR(VLEV_120, 525000000),
+ VRPAIR(VLEV_125, 550000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *ezkit_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
&rtc_device,
#endif
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
/*
* Name the Board for the /proc/cpuinfo
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 300000000),
+ VRPAIR(VLEV_095, 313000000),
+ VRPAIR(VLEV_100, 350000000),
+ VRPAIR(VLEV_105, 400000000),
+ VRPAIR(VLEV_110, 444000000),
+ VRPAIR(VLEV_115, 450000000),
+ VRPAIR(VLEV_120, 475000000),
+ VRPAIR(VLEV_125, 500000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *cm_bf561_devices[] __initdata = {
+ &bfin_dpmc,
+
#if defined(CONFIG_FB_HITACHI_TX09) || defined(CONFIG_FB_HITACHI_TX09_MODULE)
&hitachi_fb_device,
#endif
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
+#include <asm/dpmc.h>
/*
* Name the Board for the /proc/cpuinfo
};
#endif
+static const unsigned int cclk_vlev_datasheet[] =
+{
+ VRPAIR(VLEV_085, 250000000),
+ VRPAIR(VLEV_090, 300000000),
+ VRPAIR(VLEV_095, 313000000),
+ VRPAIR(VLEV_100, 350000000),
+ VRPAIR(VLEV_105, 400000000),
+ VRPAIR(VLEV_110, 444000000),
+ VRPAIR(VLEV_115, 450000000),
+ VRPAIR(VLEV_120, 475000000),
+ VRPAIR(VLEV_125, 500000000),
+ VRPAIR(VLEV_130, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+ .tuple_tab = cclk_vlev_datasheet,
+ .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+ .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+ .name = "bfin dpmc",
+ .dev = {
+ .platform_data = &bfin_dmpc_vreg_data,
+ },
+};
+
static struct platform_device *ezkit_devices[] __initdata = {
+
+ &bfin_dpmc,
+
#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
&smc91x_device,
#endif
cache.o cacheinit.o entry.o \
interrupt.o lock.o irqpanic.o arch_checks.o ints-priority.o
-obj-$(CONFIG_PM) += pm.o dpmc.o
-obj-$(CONFIG_CPU_FREQ) += cpufreq.o
+obj-$(CONFIG_PM) += pm.o dpmc_modes.o
+obj-$(CONFIG_CPU_FREQ) += cpufreq.o
+obj-$(CONFIG_CPU_VOLTAGE) += dpmc.o
+++ /dev/null
-/*
- * File: arch/blackfin/mach-common/dpmc.S
- * Based on:
- * Author: LG Soft India
- *
- * Created: ?
- * Description: Watchdog Timer APIs
- *
- * Modified:
- * Copyright 2004-2006 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * 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 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/linkage.h>
-#include <asm/blackfin.h>
-#include <asm/mach/irq.h>
-
-
-.section .l1.text
-
-ENTRY(_sleep_mode)
- [--SP] = ( R7:0, P5:0 );
- [--SP] = RETS;
-
- call _set_sic_iwr;
-
- R0 = 0xFFFF (Z);
- call _set_rtc_istat;
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- R1 = W[P0](z);
- BITSET (R1, 3);
- W[P0] = R1.L;
-
- CLI R2;
- SSYNC;
- IDLE;
- STI R2;
-
- call _test_pll_locked;
-
- R0 = IWR_ENABLE(0);
- R1 = IWR_DISABLE_ALL;
- R2 = IWR_DISABLE_ALL;
-
- call _set_sic_iwr;
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- R7 = w[p0](z);
- BITCLR (R7, 3);
- BITCLR (R7, 5);
- w[p0] = R7.L;
- IDLE;
- call _test_pll_locked;
-
- RETS = [SP++];
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-ENTRY(_hibernate_mode)
- [--SP] = ( R7:0, P5:0 );
- [--SP] = RETS;
-
- call _set_sic_iwr;
-
- R0 = 0xFFFF (Z);
- call _set_rtc_istat;
-
- P0.H = hi(VR_CTL);
- P0.L = lo(VR_CTL);
- R1 = W[P0](z);
- BITSET (R1, 8);
- BITCLR (R1, 0);
- BITCLR (R1, 1);
- W[P0] = R1.L;
- SSYNC;
-
- CLI R2;
- IDLE;
-
- /* Actually, adding anything may not be necessary...SDRAM contents
- * are lost
- */
-
-ENTRY(_deep_sleep)
- [--SP] = ( R7:0, P5:0 );
- [--SP] = RETS;
-
- CLI R4;
-
- R0 = IWR_ENABLE(0);
- R1 = IWR_DISABLE_ALL;
- R2 = IWR_DISABLE_ALL;
-
- call _set_sic_iwr;
-
- call _set_dram_srfs;
-
- /* Clear all the interrupts,bits sticky */
- R0 = 0xFFFF (Z);
- call _set_rtc_istat
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- R0 = W[P0](z);
- BITSET (R0, 5);
- W[P0] = R0.L;
-
- call _test_pll_locked;
-
- SSYNC;
- IDLE;
-
- call _unset_dram_srfs;
-
- call _test_pll_locked;
-
- R0 = IWR_ENABLE(0);
- R1 = IWR_DISABLE_ALL;
- R2 = IWR_DISABLE_ALL;
-
- call _set_sic_iwr;
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- R0 = w[p0](z);
- BITCLR (R0, 3);
- BITCLR (R0, 5);
- BITCLR (R0, 8);
- w[p0] = R0;
- IDLE;
- call _test_pll_locked;
-
- STI R4;
-
- RETS = [SP++];
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-ENTRY(_sleep_deeper)
- [--SP] = ( R7:0, P5:0 );
- [--SP] = RETS;
-
- CLI R4;
-
- P3 = R0;
- P4 = R1;
- P5 = R2;
-
- R0 = IWR_ENABLE(0);
- R1 = IWR_DISABLE_ALL;
- R2 = IWR_DISABLE_ALL;
-
- call _set_sic_iwr;
- call _set_dram_srfs; /* Set SDRAM Self Refresh */
-
- /* Clear all the interrupts,bits sticky */
- R0 = 0xFFFF (Z);
- call _set_rtc_istat;
- P0.H = hi(PLL_DIV);
- P0.L = lo(PLL_DIV);
- R6 = W[P0](z);
- R0.L = 0xF;
- W[P0] = R0.l; /* Set Max VCO to SCLK divider */
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- R5 = W[P0](z);
- R0.L = (CONFIG_MIN_VCO_HZ/CONFIG_CLKIN_HZ) << 9;
- W[P0] = R0.l; /* Set Min CLKIN to VCO multiplier */
-
- SSYNC;
- IDLE;
-
- call _test_pll_locked;
-
- P0.H = hi(VR_CTL);
- P0.L = lo(VR_CTL);
- R7 = W[P0](z);
- R1 = 0x6;
- R1 <<= 16;
- R2 = 0x0404(Z);
- R1 = R1|R2;
-
- R2 = DEPOSIT(R7, R1);
- W[P0] = R2; /* Set Min Core Voltage */
-
- SSYNC;
- IDLE;
-
- call _test_pll_locked;
-
- R0 = P3;
- R1 = P4;
- R3 = P5;
- call _set_sic_iwr; /* Set Awake from IDLE */
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- R0 = W[P0](z);
- BITSET (R0, 3);
- W[P0] = R0.L; /* Turn CCLK OFF */
- SSYNC;
- IDLE;
-
- call _test_pll_locked;
-
- R0 = IWR_ENABLE(0);
- R1 = IWR_DISABLE_ALL;
- R2 = IWR_DISABLE_ALL;
-
- call _set_sic_iwr; /* Set Awake from IDLE PLL */
-
- P0.H = hi(VR_CTL);
- P0.L = lo(VR_CTL);
- W[P0]= R7;
-
- SSYNC;
- IDLE;
-
- call _test_pll_locked;
-
- P0.H = hi(PLL_DIV);
- P0.L = lo(PLL_DIV);
- W[P0]= R6; /* Restore CCLK and SCLK divider */
-
- P0.H = hi(PLL_CTL);
- P0.L = lo(PLL_CTL);
- w[p0] = R5; /* Restore VCO multiplier */
- IDLE;
- call _test_pll_locked;
-
- call _unset_dram_srfs; /* SDRAM Self Refresh Off */
-
- STI R4;
-
- RETS = [SP++];
- ( R7:0, P5:0 ) = [SP++];
- RTS;
-
-ENTRY(_set_dram_srfs)
- /* set the dram to self refresh mode */
-#if defined(CONFIG_BF54x)
- P0.H = hi(EBIU_RSTCTL);
- P0.L = lo(EBIU_RSTCTL);
- R2 = [P0];
- R3.H = hi(SRREQ);
- R3.L = lo(SRREQ);
-#else
- P0.H = hi(EBIU_SDGCTL);
- P0.L = lo(EBIU_SDGCTL);
- R2 = [P0];
- R3.H = hi(SRFS);
- R3.L = lo(SRFS);
-#endif
- R2 = R2|R3;
- [P0] = R2;
- ssync;
-#if defined(CONFIG_BF54x)
-.LSRR_MODE:
- R2 = [P0];
- CC = BITTST(R2, 4);
- if !CC JUMP .LSRR_MODE;
-#endif
- RTS;
-
-ENTRY(_unset_dram_srfs)
- /* set the dram out of self refresh mode */
-#if defined(CONFIG_BF54x)
- P0.H = hi(EBIU_RSTCTL);
- P0.L = lo(EBIU_RSTCTL);
- R2 = [P0];
- R3.H = hi(SRREQ);
- R3.L = lo(SRREQ);
-#else
- P0.H = hi(EBIU_SDGCTL);
- P0.L = lo(EBIU_SDGCTL);
- R2 = [P0];
- R3.H = hi(SRFS);
- R3.L = lo(SRFS);
-#endif
- R3 = ~R3;
- R2 = R2&R3;
- [P0] = R2;
- ssync;
- RTS;
-
-ENTRY(_set_sic_iwr)
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
- P0.H = hi(SIC_IWR0);
- P0.L = lo(SIC_IWR0);
- P1.H = hi(SIC_IWR1);
- P1.L = lo(SIC_IWR1);
- [P1] = R1;
-#if defined(CONFIG_BF54x)
- P1.H = hi(SIC_IWR2);
- P1.L = lo(SIC_IWR2);
- [P1] = R2;
-#endif
-#else
- P0.H = hi(SIC_IWR);
- P0.L = lo(SIC_IWR);
-#endif
- [P0] = R0;
-
- SSYNC;
- RTS;
-
-ENTRY(_set_rtc_istat)
-#ifndef CONFIG_BF561
- P0.H = hi(RTC_ISTAT);
- P0.L = lo(RTC_ISTAT);
- w[P0] = R0.L;
- SSYNC;
-#endif
- RTS;
-
-ENTRY(_test_pll_locked)
- P0.H = hi(PLL_STAT);
- P0.L = lo(PLL_STAT);
-1:
- R0 = W[P0] (Z);
- CC = BITTST(R0,5);
- IF !CC JUMP 1b;
- RTS;
--- /dev/null
+/*
+ * Copyright 2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/cpufreq.h>
+
+#include <asm/delay.h>
+#include <asm/dpmc.h>
+
+#define DRIVER_NAME "bfin dpmc"
+
+#define dprintk(msg...) \
+ cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, DRIVER_NAME, msg)
+
+struct bfin_dpmc_platform_data *pdata;
+
+/**
+ * bfin_set_vlev - Update VLEV field in VR_CTL Reg.
+ * Avoid BYPASS sequence
+ */
+static void bfin_set_vlev(unsigned int vlev)
+{
+ unsigned pll_lcnt;
+
+ pll_lcnt = bfin_read_PLL_LOCKCNT();
+
+ bfin_write_PLL_LOCKCNT(1);
+ bfin_write_VR_CTL((bfin_read_VR_CTL() & ~VLEV) | vlev);
+ bfin_write_PLL_LOCKCNT(pll_lcnt);
+}
+
+/**
+ * bfin_get_vlev - Get CPU specific VLEV from platform device data
+ */
+static unsigned int bfin_get_vlev(unsigned int freq)
+{
+ int i;
+
+ if (!pdata)
+ goto err_out;
+
+ freq >>= 16;
+
+ for (i = 0; i < pdata->tabsize; i++)
+ if (freq <= (pdata->tuple_tab[i] & 0xFFFF))
+ return pdata->tuple_tab[i] >> 16;
+
+err_out:
+ printk(KERN_WARNING "DPMC: No suitable CCLK VDDINT voltage pair found\n");
+ return VLEV_120;
+}
+
+#ifdef CONFIG_CPU_FREQ
+static int
+vreg_cpufreq_notifier(struct notifier_block *nb, unsigned long val, void *data)
+{
+ struct cpufreq_freqs *freq = data;
+
+ if (val == CPUFREQ_PRECHANGE && freq->old < freq->new) {
+ bfin_set_vlev(bfin_get_vlev(freq->new));
+ udelay(pdata->vr_settling_time); /* Wait until Volatge settled */
+
+ } else if (val == CPUFREQ_POSTCHANGE && freq->old > freq->new)
+ bfin_set_vlev(bfin_get_vlev(freq->new));
+
+ return 0;
+}
+
+static struct notifier_block vreg_cpufreq_notifier_block = {
+ .notifier_call = vreg_cpufreq_notifier
+};
+#endif /* CONFIG_CPU_FREQ */
+
+/**
+ * bfin_dpmc_probe -
+ *
+ */
+static int __devinit bfin_dpmc_probe(struct platform_device *pdev)
+{
+ if (pdev->dev.platform_data)
+ pdata = pdev->dev.platform_data;
+ else
+ return -EINVAL;
+
+ return cpufreq_register_notifier(&vreg_cpufreq_notifier_block,
+ CPUFREQ_TRANSITION_NOTIFIER);
+}
+
+/**
+ * bfin_dpmc_remove -
+ */
+static int __devexit bfin_dpmc_remove(struct platform_device *pdev)
+{
+ pdata = NULL;
+ return cpufreq_unregister_notifier(&vreg_cpufreq_notifier_block,
+ CPUFREQ_TRANSITION_NOTIFIER);
+}
+
+struct platform_driver bfin_dpmc_device_driver = {
+ .probe = bfin_dpmc_probe,
+ .remove = __devexit_p(bfin_dpmc_remove),
+ .driver = {
+ .name = DRIVER_NAME,
+ }
+};
+
+/**
+ * bfin_dpmc_init - Init driver
+ */
+static int __init bfin_dpmc_init(void)
+{
+ return platform_driver_register(&bfin_dpmc_device_driver);
+}
+module_init(bfin_dpmc_init);
+
+/**
+ * bfin_dpmc_exit - break down driver
+ */
+static void __exit bfin_dpmc_exit(void)
+{
+ platform_driver_unregister(&bfin_dpmc_device_driver);
+}
+module_exit(bfin_dpmc_exit);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("cpu power management driver for Blackfin");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Copyright 2004-2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/linkage.h>
+#include <asm/blackfin.h>
+#include <asm/mach/irq.h>
+
+
+.section .l1.text
+
+ENTRY(_sleep_mode)
+ [--SP] = ( R7:0, P5:0 );
+ [--SP] = RETS;
+
+ call _set_sic_iwr;
+
+ R0 = 0xFFFF (Z);
+ call _set_rtc_istat;
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ R1 = W[P0](z);
+ BITSET (R1, 3);
+ W[P0] = R1.L;
+
+ CLI R2;
+ SSYNC;
+ IDLE;
+ STI R2;
+
+ call _test_pll_locked;
+
+ R0 = IWR_ENABLE(0);
+ R1 = IWR_DISABLE_ALL;
+ R2 = IWR_DISABLE_ALL;
+
+ call _set_sic_iwr;
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ R7 = w[p0](z);
+ BITCLR (R7, 3);
+ BITCLR (R7, 5);
+ w[p0] = R7.L;
+ IDLE;
+ call _test_pll_locked;
+
+ RETS = [SP++];
+ ( R7:0, P5:0 ) = [SP++];
+ RTS;
+
+ENTRY(_hibernate_mode)
+ [--SP] = ( R7:0, P5:0 );
+ [--SP] = RETS;
+
+ call _set_sic_iwr;
+
+ R0 = 0xFFFF (Z);
+ call _set_rtc_istat;
+
+ P0.H = hi(VR_CTL);
+ P0.L = lo(VR_CTL);
+ R1 = W[P0](z);
+ BITSET (R1, 8);
+ BITCLR (R1, 0);
+ BITCLR (R1, 1);
+ W[P0] = R1.L;
+ SSYNC;
+
+ CLI R2;
+ IDLE;
+
+ /* Actually, adding anything may not be necessary...SDRAM contents
+ * are lost
+ */
+
+ENTRY(_deep_sleep)
+ [--SP] = ( R7:0, P5:0 );
+ [--SP] = RETS;
+
+ CLI R4;
+
+ R0 = IWR_ENABLE(0);
+ R1 = IWR_DISABLE_ALL;
+ R2 = IWR_DISABLE_ALL;
+
+ call _set_sic_iwr;
+
+ call _set_dram_srfs;
+
+ /* Clear all the interrupts,bits sticky */
+ R0 = 0xFFFF (Z);
+ call _set_rtc_istat
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ R0 = W[P0](z);
+ BITSET (R0, 5);
+ W[P0] = R0.L;
+
+ call _test_pll_locked;
+
+ SSYNC;
+ IDLE;
+
+ call _unset_dram_srfs;
+
+ call _test_pll_locked;
+
+ R0 = IWR_ENABLE(0);
+ R1 = IWR_DISABLE_ALL;
+ R2 = IWR_DISABLE_ALL;
+
+ call _set_sic_iwr;
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ R0 = w[p0](z);
+ BITCLR (R0, 3);
+ BITCLR (R0, 5);
+ BITCLR (R0, 8);
+ w[p0] = R0;
+ IDLE;
+ call _test_pll_locked;
+
+ STI R4;
+
+ RETS = [SP++];
+ ( R7:0, P5:0 ) = [SP++];
+ RTS;
+
+ENTRY(_sleep_deeper)
+ [--SP] = ( R7:0, P5:0 );
+ [--SP] = RETS;
+
+ CLI R4;
+
+ P3 = R0;
+ P4 = R1;
+ P5 = R2;
+
+ R0 = IWR_ENABLE(0);
+ R1 = IWR_DISABLE_ALL;
+ R2 = IWR_DISABLE_ALL;
+
+ call _set_sic_iwr;
+ call _set_dram_srfs; /* Set SDRAM Self Refresh */
+
+ /* Clear all the interrupts,bits sticky */
+ R0 = 0xFFFF (Z);
+ call _set_rtc_istat;
+ P0.H = hi(PLL_DIV);
+ P0.L = lo(PLL_DIV);
+ R6 = W[P0](z);
+ R0.L = 0xF;
+ W[P0] = R0.l; /* Set Max VCO to SCLK divider */
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ R5 = W[P0](z);
+ R0.L = (CONFIG_MIN_VCO_HZ/CONFIG_CLKIN_HZ) << 9;
+ W[P0] = R0.l; /* Set Min CLKIN to VCO multiplier */
+
+ SSYNC;
+ IDLE;
+
+ call _test_pll_locked;
+
+ P0.H = hi(VR_CTL);
+ P0.L = lo(VR_CTL);
+ R7 = W[P0](z);
+ R1 = 0x6;
+ R1 <<= 16;
+ R2 = 0x0404(Z);
+ R1 = R1|R2;
+
+ R2 = DEPOSIT(R7, R1);
+ W[P0] = R2; /* Set Min Core Voltage */
+
+ SSYNC;
+ IDLE;
+
+ call _test_pll_locked;
+
+ R0 = P3;
+ R1 = P4;
+ R3 = P5;
+ call _set_sic_iwr; /* Set Awake from IDLE */
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ R0 = W[P0](z);
+ BITSET (R0, 3);
+ W[P0] = R0.L; /* Turn CCLK OFF */
+ SSYNC;
+ IDLE;
+
+ call _test_pll_locked;
+
+ R0 = IWR_ENABLE(0);
+ R1 = IWR_DISABLE_ALL;
+ R2 = IWR_DISABLE_ALL;
+
+ call _set_sic_iwr; /* Set Awake from IDLE PLL */
+
+ P0.H = hi(VR_CTL);
+ P0.L = lo(VR_CTL);
+ W[P0]= R7;
+
+ SSYNC;
+ IDLE;
+
+ call _test_pll_locked;
+
+ P0.H = hi(PLL_DIV);
+ P0.L = lo(PLL_DIV);
+ W[P0]= R6; /* Restore CCLK and SCLK divider */
+
+ P0.H = hi(PLL_CTL);
+ P0.L = lo(PLL_CTL);
+ w[p0] = R5; /* Restore VCO multiplier */
+ IDLE;
+ call _test_pll_locked;
+
+ call _unset_dram_srfs; /* SDRAM Self Refresh Off */
+
+ STI R4;
+
+ RETS = [SP++];
+ ( R7:0, P5:0 ) = [SP++];
+ RTS;
+
+ENTRY(_set_dram_srfs)
+ /* set the dram to self refresh mode */
+#if defined(CONFIG_BF54x)
+ P0.H = hi(EBIU_RSTCTL);
+ P0.L = lo(EBIU_RSTCTL);
+ R2 = [P0];
+ R3.H = hi(SRREQ);
+ R3.L = lo(SRREQ);
+#else
+ P0.H = hi(EBIU_SDGCTL);
+ P0.L = lo(EBIU_SDGCTL);
+ R2 = [P0];
+ R3.H = hi(SRFS);
+ R3.L = lo(SRFS);
+#endif
+ R2 = R2|R3;
+ [P0] = R2;
+ ssync;
+#if defined(CONFIG_BF54x)
+.LSRR_MODE:
+ R2 = [P0];
+ CC = BITTST(R2, 4);
+ if !CC JUMP .LSRR_MODE;
+#endif
+ RTS;
+
+ENTRY(_unset_dram_srfs)
+ /* set the dram out of self refresh mode */
+#if defined(CONFIG_BF54x)
+ P0.H = hi(EBIU_RSTCTL);
+ P0.L = lo(EBIU_RSTCTL);
+ R2 = [P0];
+ R3.H = hi(SRREQ);
+ R3.L = lo(SRREQ);
+#else
+ P0.H = hi(EBIU_SDGCTL);
+ P0.L = lo(EBIU_SDGCTL);
+ R2 = [P0];
+ R3.H = hi(SRFS);
+ R3.L = lo(SRFS);
+#endif
+ R3 = ~R3;
+ R2 = R2&R3;
+ [P0] = R2;
+ ssync;
+ RTS;
+
+ENTRY(_set_sic_iwr)
+#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
+ P0.H = hi(SIC_IWR0);
+ P0.L = lo(SIC_IWR0);
+ P1.H = hi(SIC_IWR1);
+ P1.L = lo(SIC_IWR1);
+ [P1] = R1;
+#if defined(CONFIG_BF54x)
+ P1.H = hi(SIC_IWR2);
+ P1.L = lo(SIC_IWR2);
+ [P1] = R2;
+#endif
+#else
+ P0.H = hi(SIC_IWR);
+ P0.L = lo(SIC_IWR);
+#endif
+ [P0] = R0;
+
+ SSYNC;
+ RTS;
+
+ENTRY(_set_rtc_istat)
+#ifndef CONFIG_BF561
+ P0.H = hi(RTC_ISTAT);
+ P0.L = lo(RTC_ISTAT);
+ w[P0] = R0.L;
+ SSYNC;
+#endif
+ RTS;
+
+ENTRY(_test_pll_locked)
+ P0.H = hi(PLL_STAT);
+ P0.L = lo(PLL_STAT);
+1:
+ R0 = W[P0] (Z);
+ CC = BITTST(R0,5);
+ IF !CC JUMP 1b;
+ RTS;
/*
* include/asm-blackfin/dpmc.h - Miscellaneous IOCTL commands for Dynamic Power
* Management Controller Driver.
- * Copyright (C) 2004 Analog Device Inc.
+ * Copyright (C) 2004-2008 Analog Device Inc.
*
*/
#ifndef _BLACKFIN_DPMC_H_
extern unsigned long get_cclk(void);
extern unsigned long get_sclk(void);
+struct bfin_dpmc_platform_data {
+ const unsigned int *tuple_tab;
+ unsigned short tabsize;
+ unsigned short vr_settling_time; /* in us */
+};
+
+#define VRPAIR(vlev, freq) (((vlev) << 16) | ((freq) >> 16))
+
#endif /* __KERNEL__ */
#endif /*_BLACKFIN_DPMC_H_*/
projects / linux-2.6-microblaze.git / commitdiff