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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/mach-omap2/vp.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap2/vp.c')
-rw-r--r--ANDROID_3.4.5/arch/arm/mach-omap2/vp.c283
1 files changed, 0 insertions, 283 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap2/vp.c b/ANDROID_3.4.5/arch/arm/mach-omap2/vp.c
deleted file mode 100644
index f95c1bad..00000000
--- a/ANDROID_3.4.5/arch/arm/mach-omap2/vp.c
+++ /dev/null
@@ -1,283 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/init.h>
-
-#include "common.h"
-
-#include "voltage.h"
-#include "vp.h"
-#include "prm-regbits-34xx.h"
-#include "prm-regbits-44xx.h"
-#include "prm44xx.h"
-
-static u32 _vp_set_init_voltage(struct voltagedomain *voltdm, u32 volt)
-{
- struct omap_vp_instance *vp = voltdm->vp;
- u32 vpconfig;
- char vsel;
-
- vsel = voltdm->pmic->uv_to_vsel(volt);
-
- vpconfig = voltdm->read(vp->vpconfig);
- vpconfig &= ~(vp->common->vpconfig_initvoltage_mask |
- vp->common->vpconfig_forceupdate |
- vp->common->vpconfig_initvdd);
- vpconfig |= vsel << __ffs(vp->common->vpconfig_initvoltage_mask);
- voltdm->write(vpconfig, vp->vpconfig);
-
- /* Trigger initVDD value copy to voltage processor */
- voltdm->write((vpconfig | vp->common->vpconfig_initvdd),
- vp->vpconfig);
-
- /* Clear initVDD copy trigger bit */
- voltdm->write(vpconfig, vp->vpconfig);
-
- return vpconfig;
-}
-
-/* Generic voltage init functions */
-void __init omap_vp_init(struct voltagedomain *voltdm)
-{
- struct omap_vp_instance *vp = voltdm->vp;
- u32 val, sys_clk_rate, timeout, waittime;
- u32 vddmin, vddmax, vstepmin, vstepmax;
-
- if (!voltdm->pmic || !voltdm->pmic->uv_to_vsel) {
- pr_err("%s: No PMIC info for vdd_%s\n", __func__, voltdm->name);
- return;
- }
-
- if (!voltdm->read || !voltdm->write) {
- pr_err("%s: No read/write API for accessing vdd_%s regs\n",
- __func__, voltdm->name);
- return;
- }
-
- vp->enabled = false;
-
- /* Divide to avoid overflow */
- sys_clk_rate = voltdm->sys_clk.rate / 1000;
-
- timeout = (sys_clk_rate * voltdm->pmic->vp_timeout_us) / 1000;
- vddmin = voltdm->pmic->vp_vddmin;
- vddmax = voltdm->pmic->vp_vddmax;
-
- waittime = DIV_ROUND_UP(voltdm->pmic->step_size * sys_clk_rate,
- 1000 * voltdm->pmic->slew_rate);
- vstepmin = voltdm->pmic->vp_vstepmin;
- vstepmax = voltdm->pmic->vp_vstepmax;
-
- /*
- * VP_CONFIG: error gain is not set here, it will be updated
- * on each scale, based on OPP.
- */
- val = (voltdm->pmic->vp_erroroffset <<
- __ffs(voltdm->vp->common->vpconfig_erroroffset_mask)) |
- vp->common->vpconfig_timeouten;
- voltdm->write(val, vp->vpconfig);
-
- /* VSTEPMIN */
- val = (waittime << vp->common->vstepmin_smpswaittimemin_shift) |
- (vstepmin << vp->common->vstepmin_stepmin_shift);
- voltdm->write(val, vp->vstepmin);
-
- /* VSTEPMAX */
- val = (vstepmax << vp->common->vstepmax_stepmax_shift) |
- (waittime << vp->common->vstepmax_smpswaittimemax_shift);
- voltdm->write(val, vp->vstepmax);
-
- /* VLIMITTO */
- val = (vddmax << vp->common->vlimitto_vddmax_shift) |
- (vddmin << vp->common->vlimitto_vddmin_shift) |
- (timeout << vp->common->vlimitto_timeout_shift);
- voltdm->write(val, vp->vlimitto);
-}
-
-int omap_vp_update_errorgain(struct voltagedomain *voltdm,
- unsigned long target_volt)
-{
- struct omap_volt_data *volt_data;
-
- if (!voltdm->vp)
- return -EINVAL;
-
- /* Get volt_data corresponding to target_volt */
- volt_data = omap_voltage_get_voltdata(voltdm, target_volt);
- if (IS_ERR(volt_data))
- return -EINVAL;
-
- /* Setting vp errorgain based on the voltage */
- voltdm->rmw(voltdm->vp->common->vpconfig_errorgain_mask,
- volt_data->vp_errgain <<
- __ffs(voltdm->vp->common->vpconfig_errorgain_mask),
- voltdm->vp->vpconfig);
-
- return 0;
-}
-
-/* VP force update method of voltage scaling */
-int omap_vp_forceupdate_scale(struct voltagedomain *voltdm,
- unsigned long target_volt)
-{
- struct omap_vp_instance *vp = voltdm->vp;
- u32 vpconfig;
- u8 target_vsel, current_vsel;
- int ret, timeout = 0;
-
- ret = omap_vc_pre_scale(voltdm, target_volt, &target_vsel, &current_vsel);
- if (ret)
- return ret;
-
- /*
- * Clear all pending TransactionDone interrupt/status. Typical latency
- * is <3us
- */
- while (timeout++ < VP_TRANXDONE_TIMEOUT) {
- vp->common->ops->clear_txdone(vp->id);
- if (!vp->common->ops->check_txdone(vp->id))
- break;
- udelay(1);
- }
- if (timeout >= VP_TRANXDONE_TIMEOUT) {
- pr_warning("%s: vdd_%s TRANXDONE timeout exceeded."
- "Voltage change aborted", __func__, voltdm->name);
- return -ETIMEDOUT;
- }
-
- vpconfig = _vp_set_init_voltage(voltdm, target_volt);
-
- /* Force update of voltage */
- voltdm->write(vpconfig | vp->common->vpconfig_forceupdate,
- voltdm->vp->vpconfig);
-
- /*
- * Wait for TransactionDone. Typical latency is <200us.
- * Depends on SMPSWAITTIMEMIN/MAX and voltage change
- */
- timeout = 0;
- omap_test_timeout(vp->common->ops->check_txdone(vp->id),
- VP_TRANXDONE_TIMEOUT, timeout);
- if (timeout >= VP_TRANXDONE_TIMEOUT)
- pr_err("%s: vdd_%s TRANXDONE timeout exceeded."
- "TRANXDONE never got set after the voltage update\n",
- __func__, voltdm->name);
-
- omap_vc_post_scale(voltdm, target_volt, target_vsel, current_vsel);
-
- /*
- * Disable TransactionDone interrupt , clear all status, clear
- * control registers
- */
- timeout = 0;
- while (timeout++ < VP_TRANXDONE_TIMEOUT) {
- vp->common->ops->clear_txdone(vp->id);
- if (!vp->common->ops->check_txdone(vp->id))
- break;
- udelay(1);
- }
-
- if (timeout >= VP_TRANXDONE_TIMEOUT)
- pr_warning("%s: vdd_%s TRANXDONE timeout exceeded while trying"
- "to clear the TRANXDONE status\n",
- __func__, voltdm->name);
-
- /* Clear force bit */
- voltdm->write(vpconfig, vp->vpconfig);
-
- return 0;
-}
-
-/**
- * omap_vp_enable() - API to enable a particular VP
- * @voltdm: pointer to the VDD whose VP is to be enabled.
- *
- * This API enables a particular voltage processor. Needed by the smartreflex
- * class drivers.
- */
-void omap_vp_enable(struct voltagedomain *voltdm)
-{
- struct omap_vp_instance *vp;
- u32 vpconfig, volt;
-
- if (!voltdm || IS_ERR(voltdm)) {
- pr_warning("%s: VDD specified does not exist!\n", __func__);
- return;
- }
-
- vp = voltdm->vp;
- if (!voltdm->read || !voltdm->write) {
- pr_err("%s: No read/write API for accessing vdd_%s regs\n",
- __func__, voltdm->name);
- return;
- }
-
- /* If VP is already enabled, do nothing. Return */
- if (vp->enabled)
- return;
-
- volt = voltdm_get_voltage(voltdm);
- if (!volt) {
- pr_warning("%s: unable to find current voltage for %s\n",
- __func__, voltdm->name);
- return;
- }
-
- vpconfig = _vp_set_init_voltage(voltdm, volt);
-
- /* Enable VP */
- vpconfig |= vp->common->vpconfig_vpenable;
- voltdm->write(vpconfig, vp->vpconfig);
-
- vp->enabled = true;
-}
-
-/**
- * omap_vp_disable() - API to disable a particular VP
- * @voltdm: pointer to the VDD whose VP is to be disabled.
- *
- * This API disables a particular voltage processor. Needed by the smartreflex
- * class drivers.
- */
-void omap_vp_disable(struct voltagedomain *voltdm)
-{
- struct omap_vp_instance *vp;
- u32 vpconfig;
- int timeout;
-
- if (!voltdm || IS_ERR(voltdm)) {
- pr_warning("%s: VDD specified does not exist!\n", __func__);
- return;
- }
-
- vp = voltdm->vp;
- if (!voltdm->read || !voltdm->write) {
- pr_err("%s: No read/write API for accessing vdd_%s regs\n",
- __func__, voltdm->name);
- return;
- }
-
- /* If VP is already disabled, do nothing. Return */
- if (!vp->enabled) {
- pr_warning("%s: Trying to disable VP for vdd_%s when"
- "it is already disabled\n", __func__, voltdm->name);
- return;
- }
-
- /* Disable VP */
- vpconfig = voltdm->read(vp->vpconfig);
- vpconfig &= ~vp->common->vpconfig_vpenable;
- voltdm->write(vpconfig, vp->vpconfig);
-
- /*
- * Wait for VP idle Typical latency is <2us. Maximum latency is ~100us
- */
- omap_test_timeout((voltdm->read(vp->vstatus)),
- VP_IDLE_TIMEOUT, timeout);
-
- if (timeout >= VP_IDLE_TIMEOUT)
- pr_warning("%s: vdd_%s idle timedout\n",
- __func__, voltdm->name);
-
- vp->enabled = false;
-
- return;
-}