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linux/arch/arm/mach-omap2/smartreflex-class3.c

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OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
/*
* Smart reflex Class 3 specific implementations
*
* Author: Thara Gopinath <thara@ti.com>
*
* Copyright (C) 2010 Texas Instruments, Inc.
* Thara Gopinath <thara@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
ARM: OMAP2+: SmartReflex: move the smartreflex header to include/linux/power Move the smartreflex header file (arch/arm/mach-omap2/smartreflex.h) in a new header file include/linux/power/smartreflex.h. This change makes the SmartReflex implementation ready for the move to drivers/. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-25 10:36:20 +00:00
#include <linux/power/smartreflex.h>
#include "voltage.h"
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
static int sr_class3_enable(struct omap_sr *sr)
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
{
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
unsigned long volt = voltdm_get_voltage(sr->voltdm);
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
if (!volt) {
ARM: OMAP2+: smartreflex: Use the names from hwmod data instead of voltage domains. Associate a name with each SmartReflex instance from the hwmod data, rather than attempting to reuse the name of a voltage domain. The name from hwmod better reflects the smartreflex integration in the system. Also have the name passed to the drivers using pdata, which helps to remove any dependencies on SoC-specific structures. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 05:11:27 +00:00
pr_warning("%s: Curr voltage unknown. Cannot enable %s\n",
__func__, sr->name);
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
return -ENODATA;
}
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
omap_vp_enable(sr->voltdm);
return sr_enable(sr->voltdm, volt);
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
}
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
{
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
sr_disable_errgen(sr->voltdm);
omap_vp_disable(sr->voltdm);
sr_disable(sr->voltdm);
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
if (is_volt_reset)
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
voltdm_reset(sr->voltdm);
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
return 0;
}
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
static int sr_class3_configure(struct omap_sr *sr)
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
{
ARM: OMAP3+: SmartReflex: class drivers should use struct omap_sr * Convert SmartReflex "class" functions to take a struct omap_sr *, rather than a struct voltagedomain *. SmartReflex code should be driver code and not tightly coupled to OMAP subarchitecture-specific structures. Based on Paul's original code for the SmartReflex driver conversion. Signed-off-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: J Keerthy <j-keerthy@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-04-24 04:52:12 +00:00
return sr_configure_errgen(sr->voltdm);
OMAP3: PM: Adding smartreflex class3 driver Smartreflex Class3 implementation continuously monitors silicon performance and instructs the Voltage Processors to increase or decrease the voltage. This patch adds smartreflex class 3 driver. This driver hooks up with the generic smartreflex driver smartreflex.c to abstract out class specific implementations out of the generic driver. Class3 driver is chosen as the default class driver for smartreflex. If any other class driver needs to be implemented, the init of that driver should be called from the board file. That way the new class driver will over-ride the Class3 driver. Signed-off-by: Thara Gopinath <thara@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-29 16:32:25 +00:00
}
/* SR class3 structure */
static struct omap_sr_class_data class3_data = {
.enable = sr_class3_enable,
.disable = sr_class3_disable,
.configure = sr_class3_configure,
.class_type = SR_CLASS3,
};
/* Smartreflex Class3 init API to be called from board file */
static int __init sr_class3_init(void)
{
pr_info("SmartReflex Class3 initialized\n");
return sr_register_class(&class3_data);
}
ARM: OMAP2+: Use omap initcalls This way the initcalls don't run on other SoCs on multiplatform kernels. Otherwise we'll get something like this when booting on vexpress: omap_hwmod: _ensure_mpu_hwmod_is_setup: MPU initiator hwmod mpu not yet registered ... WARNING: at arch/arm/mach-omap2/pm.c:82 _init_omap_device+0x74/0x94() _init_omap_device: could not find omap_hwmod for mpu ... omap-dma-engine omap-dma-engine: OMAP DMA engine driver ... Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-11 19:24:18 +00:00
omap_late_initcall(sr_class3_init);
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