summaryrefslogtreecommitdiff
path: root/packages/linux/linux-omap2-git/omap3evm/0001-ARM-OMAP-SmartReflex-driver.patch
diff options
context:
space:
mode:
Diffstat (limited to 'packages/linux/linux-omap2-git/omap3evm/0001-ARM-OMAP-SmartReflex-driver.patch')
-rw-r--r--packages/linux/linux-omap2-git/omap3evm/0001-ARM-OMAP-SmartReflex-driver.patch1002
1 files changed, 1002 insertions, 0 deletions
diff --git a/packages/linux/linux-omap2-git/omap3evm/0001-ARM-OMAP-SmartReflex-driver.patch b/packages/linux/linux-omap2-git/omap3evm/0001-ARM-OMAP-SmartReflex-driver.patch
new file mode 100644
index 0000000000..550a4f58be
--- /dev/null
+++ b/packages/linux/linux-omap2-git/omap3evm/0001-ARM-OMAP-SmartReflex-driver.patch
@@ -0,0 +1,1002 @@
+From: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com>
+To: linux-omap@vger.kernel.org
+Cc: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com>
+Subject: [PATCH 1/3] ARM: OMAP: SmartReflex driver, reference source and header files
+Date: Mon, 2 Jun 2008 14:30:12 +0300
+
+The following patch set integrates TI's SmartReflex driver. SmartReflex is a
+module that adjusts OMAP3 VDD1 and VDD2 operating voltages around the nominal
+values of current operating point depending on silicon characteristics and
+operating conditions.
+
+The driver creates two sysfs entries into /sys/power/ named "sr_vdd1_autocomp"
+and "sr_vdd2_autocomp" which can be used to activate SmartReflex modules 1 and
+2.
+
+Use the following commands to enable SmartReflex:
+
+echo -n 1 > /sys/power/sr_vdd1_autocomp
+echo -n 1 > /sys/power/sr_vdd2_autocomp
+
+To disable:
+
+echo -n 0 > /sys/power/sr_vdd1_autocomp
+echo -n 0 > /sys/power/sr_vdd2_autocomp
+
+This particular patch adds the TI reference source and header files for
+SmartReflex. Only modifications include minor styling to pass checkpatch.pl
+test.
+
+Signed-off-by: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com>
+---
+ arch/arm/mach-omap2/smartreflex.c | 815 +++++++++++++++++++++++++++++++++++++
+ arch/arm/mach-omap2/smartreflex.h | 136 ++++++
+ 2 files changed, 951 insertions(+), 0 deletions(-)
+ create mode 100644 arch/arm/mach-omap2/smartreflex.c
+ create mode 100644 arch/arm/mach-omap2/smartreflex.h
+
+diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
+new file mode 100644
+index 0000000..dae7460
+--- /dev/null
++++ b/arch/arm/mach-omap2/smartreflex.c
+@@ -0,0 +1,815 @@
++/*
++ * linux/arch/arm/mach-omap3/smartreflex.c
++ *
++ * OMAP34XX SmartReflex Voltage Control
++ *
++ * Copyright (C) 2007 Texas Instruments, Inc.
++ * Lesly A M <x0080970@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.
++ */
++
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/delay.h>
++#include <linux/err.h>
++#include <linux/clk.h>
++#include <linux/sysfs.h>
++
++#include <asm/arch/prcm.h>
++#include <asm/arch/power_companion.h>
++#include <linux/io.h>
++
++#include "prcm-regs.h"
++#include "smartreflex.h"
++
++
++/* #define DEBUG_SR 1 */
++#ifdef DEBUG_SR
++# define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__ ,\
++ ## args)
++#else
++# define DPRINTK(fmt, args...)
++#endif
++
++struct omap_sr{
++ int srid;
++ int is_sr_reset;
++ int is_autocomp_active;
++ struct clk *fck;
++ u32 req_opp_no;
++ u32 opp1_nvalue, opp2_nvalue, opp3_nvalue, opp4_nvalue, opp5_nvalue;
++ u32 senp_mod, senn_mod;
++ u32 srbase_addr;
++ u32 vpbase_addr;
++};
++
++static struct omap_sr sr1 = {
++ .srid = SR1,
++ .is_sr_reset = 1,
++ .is_autocomp_active = 0,
++ .srbase_addr = OMAP34XX_SR1_BASE,
++};
++
++static struct omap_sr sr2 = {
++ .srid = SR2,
++ .is_sr_reset = 1,
++ .is_autocomp_active = 0,
++ .srbase_addr = OMAP34XX_SR2_BASE,
++};
++
++static inline void sr_write_reg(struct omap_sr *sr, int offset, u32 value)
++{
++ omap_writel(value, sr->srbase_addr + offset);
++}
++
++static inline void sr_modify_reg(struct omap_sr *sr, int offset, u32 mask,
++ u32 value)
++{
++ u32 reg_val;
++
++ reg_val = omap_readl(sr->srbase_addr + offset);
++ reg_val &= ~mask;
++ reg_val |= value;
++
++ omap_writel(reg_val, sr->srbase_addr + offset);
++}
++
++static inline u32 sr_read_reg(struct omap_sr *sr, int offset)
++{
++ return omap_readl(sr->srbase_addr + offset);
++}
++
++
++#ifndef USE_EFUSE_VALUES
++static void cal_reciprocal(u32 sensor, u32 *sengain, u32 *rnsen)
++{
++ u32 gn, rn, mul;
++
++ for (gn = 0; gn < GAIN_MAXLIMIT; gn++) {
++ mul = 1 << (gn + 8);
++ rn = mul / sensor;
++ if (rn < R_MAXLIMIT) {
++ *sengain = gn;
++ *rnsen = rn;
++ }
++ }
++}
++#endif
++
++static int sr_clk_enable(struct omap_sr *sr)
++{
++ if (clk_enable(sr->fck) != 0) {
++ printk(KERN_ERR "Could not enable sr%d_fck\n", sr->srid);
++ goto clk_enable_err;
++ }
++
++ /* set fclk- active , iclk- idle */
++ sr_modify_reg(sr, ERRCONFIG, SR_CLKACTIVITY_MASK,
++ SR_CLKACTIVITY_IOFF_FON);
++
++ return 0;
++
++clk_enable_err:
++ return -1;
++}
++
++static int sr_clk_disable(struct omap_sr *sr)
++{
++ /* set fclk, iclk- idle */
++ sr_modify_reg(sr, ERRCONFIG, SR_CLKACTIVITY_MASK,
++ SR_CLKACTIVITY_IOFF_FOFF);
++
++ clk_disable(sr->fck);
++ sr->is_sr_reset = 1;
++
++ return 0;
++}
++
++static void sr_set_nvalues(struct omap_sr *sr)
++{
++#ifdef USE_EFUSE_VALUES
++ u32 n1, n2;
++#else
++ u32 senpval, sennval;
++ u32 senpgain, senngain;
++ u32 rnsenp, rnsenn;
++#endif
++
++ if (sr->srid == SR1) {
++#ifdef USE_EFUSE_VALUES
++ /* Read values for VDD1 from EFUSE */
++#else
++ /* since E-Fuse Values are not available, calculating the
++ * reciprocal of the SenN and SenP values for SR1
++ */
++ sr->senp_mod = 0x03; /* SenN-M5 enabled */
++ sr->senn_mod = 0x03;
++
++ /* for OPP5 */
++ senpval = 0x848 + 0x330;
++ sennval = 0xacd + 0x330;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp5_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ /* for OPP4 */
++ senpval = 0x727 + 0x2a0;
++ sennval = 0x964 + 0x2a0;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp4_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ /* for OPP3 */
++ senpval = 0x655 + 0x200;
++ sennval = 0x85b + 0x200;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp3_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ /* for OPP2 */
++ senpval = 0x3be + 0x1a0;
++ sennval = 0x506 + 0x1a0;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp2_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ /* for OPP1 */
++ senpval = 0x28c + 0x100;
++ sennval = 0x373 + 0x100;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp1_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ sr_clk_enable(sr);
++ sr_write_reg(sr, NVALUERECIPROCAL, sr->opp3_nvalue);
++ sr_clk_disable(sr);
++
++#endif
++ } else if (sr->srid == SR2) {
++#ifdef USE_EFUSE_VALUES
++ /* Read values for VDD2 from EFUSE */
++#else
++ /* since E-Fuse Values are not available, calculating the
++ * reciprocal of the SenN and SenP values for SR2
++ */
++ sr->senp_mod = 0x03;
++ sr->senn_mod = 0x03;
++
++ /* for OPP3 */
++ senpval = 0x579 + 0x200;
++ sennval = 0x76f + 0x200;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp3_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ /* for OPP2 */
++ senpval = 0x390 + 0x1c0;
++ sennval = 0x4f5 + 0x1c0;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp2_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++ /* for OPP1 */
++ senpval = 0x25d;
++ sennval = 0x359;
++
++ cal_reciprocal(senpval, &senpgain, &rnsenp);
++ cal_reciprocal(sennval, &senngain, &rnsenn);
++
++ sr->opp1_nvalue =
++ ((senpgain << NVALUERECIPROCAL_SENPGAIN_SHIFT) |
++ (senngain << NVALUERECIPROCAL_SENNGAIN_SHIFT) |
++ (rnsenp << NVALUERECIPROCAL_RNSENP_SHIFT) |
++ (rnsenn << NVALUERECIPROCAL_RNSENN_SHIFT));
++
++#endif
++ }
++
++}
++
++static void sr_configure_vp(int srid)
++{
++ u32 vpconfig;
++
++ if (srid == SR1) {
++ vpconfig = PRM_VP1_CONFIG_ERROROFFSET | PRM_VP1_CONFIG_ERRORGAIN
++ | PRM_VP1_CONFIG_INITVOLTAGE | PRM_VP1_CONFIG_TIMEOUTEN;
++
++ PRM_VP1_CONFIG = vpconfig;
++ PRM_VP1_VSTEPMIN = PRM_VP1_VSTEPMIN_SMPSWAITTIMEMIN |
++ PRM_VP1_VSTEPMIN_VSTEPMIN;
++
++ PRM_VP1_VSTEPMAX = PRM_VP1_VSTEPMAX_SMPSWAITTIMEMAX |
++ PRM_VP1_VSTEPMAX_VSTEPMAX;
++
++ PRM_VP1_VLIMITTO = PRM_VP1_VLIMITTO_VDDMAX |
++ PRM_VP1_VLIMITTO_VDDMIN | PRM_VP1_VLIMITTO_TIMEOUT;
++
++ PRM_VP1_CONFIG |= PRM_VP1_CONFIG_INITVDD;
++ PRM_VP1_CONFIG &= ~PRM_VP1_CONFIG_INITVDD;
++
++ } else if (srid == SR2) {
++ vpconfig = PRM_VP2_CONFIG_ERROROFFSET | PRM_VP2_CONFIG_ERRORGAIN
++ | PRM_VP2_CONFIG_INITVOLTAGE | PRM_VP2_CONFIG_TIMEOUTEN;
++
++ PRM_VP2_CONFIG = vpconfig;
++ PRM_VP2_VSTEPMIN = PRM_VP2_VSTEPMIN_SMPSWAITTIMEMIN |
++ PRM_VP2_VSTEPMIN_VSTEPMIN;
++
++ PRM_VP2_VSTEPMAX = PRM_VP2_VSTEPMAX_SMPSWAITTIMEMAX |
++ PRM_VP2_VSTEPMAX_VSTEPMAX;
++
++ PRM_VP2_VLIMITTO = PRM_VP2_VLIMITTO_VDDMAX |
++ PRM_VP2_VLIMITTO_VDDMIN | PRM_VP2_VLIMITTO_TIMEOUT;
++
++ PRM_VP2_CONFIG |= PRM_VP2_CONFIG_INITVDD;
++ PRM_VP2_CONFIG &= ~PRM_VP2_CONFIG_INITVDD;
++
++ }
++}
++
++static void sr_configure_vc(void)
++{
++ PRM_VC_SMPS_SA =
++ (R_SRI2C_SLAVE_ADDR << PRM_VC_SMPS_SA1_SHIFT) |
++ (R_SRI2C_SLAVE_ADDR << PRM_VC_SMPS_SA0_SHIFT);
++
++ PRM_VC_SMPS_VOL_RA = (R_VDD2_SR_CONTROL << PRM_VC_SMPS_VOLRA1_SHIFT) |
++ (R_VDD1_SR_CONTROL << PRM_VC_SMPS_VOLRA0_SHIFT);
++
++ PRM_VC_CMD_VAL_0 = (PRM_VC_CMD_VAL0_ON << PRM_VC_CMD_ON_SHIFT) |
++ (PRM_VC_CMD_VAL0_ONLP << PRM_VC_CMD_ONLP_SHIFT) |
++ (PRM_VC_CMD_VAL0_RET << PRM_VC_CMD_RET_SHIFT) |
++ (PRM_VC_CMD_VAL0_OFF << PRM_VC_CMD_OFF_SHIFT);
++
++ PRM_VC_CMD_VAL_1 = (PRM_VC_CMD_VAL1_ON << PRM_VC_CMD_ON_SHIFT) |
++ (PRM_VC_CMD_VAL1_ONLP << PRM_VC_CMD_ONLP_SHIFT) |
++ (PRM_VC_CMD_VAL1_RET << PRM_VC_CMD_RET_SHIFT) |
++ (PRM_VC_CMD_VAL1_OFF << PRM_VC_CMD_OFF_SHIFT);
++
++ PRM_VC_CH_CONF = PRM_VC_CH_CONF_CMD1 | PRM_VC_CH_CONF_RAV1;
++
++ PRM_VC_I2C_CFG = PRM_VC_I2C_CFG_MCODE | PRM_VC_I2C_CFG_HSEN
++ | PRM_VC_I2C_CFG_SREN;
++
++ /* Setup voltctrl and other setup times */
++#ifdef CONFIG_SYSOFFMODE
++ PRM_VOLTCTRL = PRM_VOLTCTRL_AUTO_OFF | PRM_VOLTCTRL_AUTO_RET;
++ PRM_CLKSETUP = PRM_CLKSETUP_DURATION;
++ PRM_VOLTSETUP1 = (PRM_VOLTSETUP_TIME2 << PRM_VOLTSETUP_TIME2_OFFSET) |
++ (PRM_VOLTSETUP_TIME1 << PRM_VOLTSETUP_TIME1_OFFSET);
++ PRM_VOLTOFFSET = PRM_VOLTOFFSET_DURATION;
++ PRM_VOLTSETUP2 = PRM_VOLTSETUP2_DURATION;
++#else
++ PRM_VOLTCTRL |= PRM_VOLTCTRL_AUTO_RET;
++#endif
++
++}
++
++
++static void sr_configure(struct omap_sr *sr)
++{
++ u32 sys_clk, sr_clk_length = 0;
++ u32 sr_config;
++ u32 senp_en , senn_en;
++
++ senp_en = sr->senp_mod;
++ senn_en = sr->senn_mod;
++
++ sys_clk = prcm_get_system_clock_speed();
++
++ switch (sys_clk) {
++ case 12000:
++ sr_clk_length = SRCLKLENGTH_12MHZ_SYSCLK;
++ break;
++ case 13000:
++ sr_clk_length = SRCLKLENGTH_13MHZ_SYSCLK;
++ break;
++ case 19200:
++ sr_clk_length = SRCLKLENGTH_19MHZ_SYSCLK;
++ break;
++ case 26000:
++ sr_clk_length = SRCLKLENGTH_26MHZ_SYSCLK;
++ break;
++ case 38400:
++ sr_clk_length = SRCLKLENGTH_38MHZ_SYSCLK;
++ break;
++ default :
++ printk(KERN_ERR "Invalid sysclk value\n");
++ break;
++ }
++
++ DPRINTK(KERN_DEBUG "SR : sys clk %lu\n", sys_clk);
++ if (sr->srid == SR1) {
++ sr_config = SR1_SRCONFIG_ACCUMDATA |
++ (sr_clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |
++ SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN |
++ SRCONFIG_MINMAXAVG_EN |
++ (senn_en << SRCONFIG_SENNENABLE_SHIFT) |
++ (senp_en << SRCONFIG_SENPENABLE_SHIFT) |
++ SRCONFIG_DELAYCTRL;
++
++ sr_write_reg(sr, SRCONFIG, sr_config);
++
++ sr_write_reg(sr, AVGWEIGHT, SR1_AVGWEIGHT_SENPAVGWEIGHT |
++ SR1_AVGWEIGHT_SENNAVGWEIGHT);
++
++ sr_modify_reg(sr, ERRCONFIG, (SR_ERRWEIGHT_MASK |
++ SR_ERRMAXLIMIT_MASK | SR_ERRMINLIMIT_MASK),
++ (SR1_ERRWEIGHT | SR1_ERRMAXLIMIT | SR1_ERRMINLIMIT));
++
++ } else if (sr->srid == SR2) {
++ sr_config = SR2_SRCONFIG_ACCUMDATA |
++ (sr_clk_length << SRCONFIG_SRCLKLENGTH_SHIFT) |
++ SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN |
++ SRCONFIG_MINMAXAVG_EN |
++ (senn_en << SRCONFIG_SENNENABLE_SHIFT) |
++ (senp_en << SRCONFIG_SENPENABLE_SHIFT) |
++ SRCONFIG_DELAYCTRL;
++
++ sr_write_reg(sr, SRCONFIG, sr_config);
++
++ sr_write_reg(sr, AVGWEIGHT, SR2_AVGWEIGHT_SENPAVGWEIGHT |
++ SR2_AVGWEIGHT_SENNAVGWEIGHT);
++
++ sr_modify_reg(sr, ERRCONFIG, (SR_ERRWEIGHT_MASK |
++ SR_ERRMAXLIMIT_MASK | SR_ERRMINLIMIT_MASK),
++ (SR2_ERRWEIGHT | SR2_ERRMAXLIMIT | SR2_ERRMINLIMIT));
++
++ }
++ sr->is_sr_reset = 0;
++}
++
++static void sr_enable(struct omap_sr *sr, u32 target_opp_no)
++{
++ u32 nvalue_reciprocal, current_nvalue;
++
++ sr->req_opp_no = target_opp_no;
++
++ if (sr->srid == SR1) {
++ switch (target_opp_no) {
++ case 5:
++ nvalue_reciprocal = sr->opp5_nvalue;
++ break;
++ case 4:
++ nvalue_reciprocal = sr->opp4_nvalue;
++ break;
++ case 3:
++ nvalue_reciprocal = sr->opp3_nvalue;
++ break;
++ case 2:
++ nvalue_reciprocal = sr->opp2_nvalue;
++ break;
++ case 1:
++ nvalue_reciprocal = sr->opp1_nvalue;
++ break;
++ default:
++ nvalue_reciprocal = sr->opp3_nvalue;
++ break;
++ }
++ } else {
++ switch (target_opp_no) {
++ case 3:
++ nvalue_reciprocal = sr->opp3_nvalue;
++ break;
++ case 2:
++ nvalue_reciprocal = sr->opp2_nvalue;
++ break;
++ case 1:
++ nvalue_reciprocal = sr->opp1_nvalue;
++ break;
++ default:
++ nvalue_reciprocal = sr->opp3_nvalue;
++ break;
++ }
++ }
++
++ current_nvalue = sr_read_reg(sr, NVALUERECIPROCAL);
++
++ if (current_nvalue == nvalue_reciprocal) {
++ DPRINTK("System is already at the desired voltage level\n");
++ return;
++ }
++
++ sr_write_reg(sr, NVALUERECIPROCAL, nvalue_reciprocal);
++
++ /* Enable the interrupt */
++ sr_modify_reg(sr, ERRCONFIG,
++ (ERRCONFIG_VPBOUNDINTEN | ERRCONFIG_VPBOUNDINTST),
++ (ERRCONFIG_VPBOUNDINTEN | ERRCONFIG_VPBOUNDINTST));
++
++ if (sr->srid == SR1) {
++ /* Enable VP1 */
++ PRM_VP1_CONFIG |= PRM_VP1_CONFIG_VPENABLE;
++ } else if (sr->srid == SR2) {
++ /* Enable VP2 */
++ PRM_VP2_CONFIG |= PRM_VP2_CONFIG_VPENABLE;
++ }
++
++ /* SRCONFIG - enable SR */
++ sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, SRCONFIG_SRENABLE);
++
++}
++
++static void sr_disable(struct omap_sr *sr)
++{
++ sr->is_sr_reset = 1;
++
++ /* SRCONFIG - disable SR */
++ sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE, ~SRCONFIG_SRENABLE);
++
++ if (sr->srid == SR1) {
++ /* Enable VP1 */
++ PRM_VP1_CONFIG &= ~PRM_VP1_CONFIG_VPENABLE;
++ } else if (sr->srid == SR2) {
++ /* Enable VP2 */
++ PRM_VP2_CONFIG &= ~PRM_VP2_CONFIG_VPENABLE;
++ }
++}
++
++
++void sr_start_vddautocomap(int srid, u32 target_opp_no)
++{
++ struct omap_sr *sr = NULL;
++
++ if (srid == SR1)
++ sr = &sr1;
++ else if (srid == SR2)
++ sr = &sr2;
++
++ if (sr->is_sr_reset == 1) {
++ sr_clk_enable(sr);
++ sr_configure(sr);
++ }
++
++ if (sr->is_autocomp_active == 1)
++ DPRINTK(KERN_WARNING "SR%d: VDD autocomp is already active\n",
++ srid);
++
++ sr->is_autocomp_active = 1;
++ sr_enable(sr, target_opp_no);
++}
++EXPORT_SYMBOL(sr_start_vddautocomap);
++
++int sr_stop_vddautocomap(int srid)
++{
++ struct omap_sr *sr = NULL;
++
++ if (srid == SR1)
++ sr = &sr1;
++ else if (srid == SR2)
++ sr = &sr2;
++
++ if (sr->is_autocomp_active == 1) {
++ sr_disable(sr);
++ sr_clk_disable(sr);
++ sr->is_autocomp_active = 0;
++ return SR_TRUE;
++ } else {
++ DPRINTK(KERN_WARNING "SR%d: VDD autocomp is not active\n",
++ srid);
++ return SR_FALSE;
++ }
++
++}
++EXPORT_SYMBOL(sr_stop_vddautocomap);
++
++void enable_smartreflex(int srid)
++{
++ u32 target_opp_no = 0;
++ struct omap_sr *sr = NULL;
++
++ if (srid == SR1)
++ sr = &sr1;
++ else if (srid == SR2)
++ sr = &sr2;
++
++ if (sr->is_autocomp_active == 1) {
++ if (sr->is_sr_reset == 1) {
++ if (srid == SR1) {
++ /* Enable SR clks */
++ CM_FCLKEN_WKUP |= SR1_CLK_ENABLE;
++ target_opp_no = get_opp_no(current_vdd1_opp);
++
++ } else if (srid == SR2) {
++ /* Enable SR clks */
++ CM_FCLKEN_WKUP |= SR2_CLK_ENABLE;
++ target_opp_no = get_opp_no(current_vdd2_opp);
++ }
++
++ sr_configure(sr);
++
++ sr_enable(sr, target_opp_no);
++ }
++ }
++}
++
++void disable_smartreflex(int srid)
++{
++ struct omap_sr *sr = NULL;
++
++ if (srid == SR1)
++ sr = &sr1;
++ else if (srid == SR2)
++ sr = &sr2;
++
++ if (sr->is_autocomp_active == 1) {
++ if (srid == SR1) {
++ /* Enable SR clk */
++ CM_FCLKEN_WKUP |= SR1_CLK_ENABLE;
++
++ } else if (srid == SR2) {
++ /* Enable SR clk */
++ CM_FCLKEN_WKUP |= SR2_CLK_ENABLE;
++ }
++
++ if (sr->is_sr_reset == 0) {
++
++ sr->is_sr_reset = 1;
++ /* SRCONFIG - disable SR */
++ sr_modify_reg(sr, SRCONFIG, SRCONFIG_SRENABLE,
++ ~SRCONFIG_SRENABLE);
++
++ if (sr->srid == SR1) {
++ /* Disable SR clk */
++ CM_FCLKEN_WKUP &= ~SR1_CLK_ENABLE;
++ /* Enable VP1 */
++ PRM_VP1_CONFIG &= ~PRM_VP1_CONFIG_VPENABLE;
++
++ } else if (sr->srid == SR2) {
++ /* Disable SR clk */
++ CM_FCLKEN_WKUP &= ~SR2_CLK_ENABLE;
++ /* Enable VP2 */
++ PRM_VP2_CONFIG &= ~PRM_VP2_CONFIG_VPENABLE;
++ }
++ }
++ }
++}
++
++
++/* Voltage Scaling using SR VCBYPASS */
++int sr_voltagescale_vcbypass(u32 target_opp, u8 vsel)
++{
++ int ret;
++ int sr_status = 0;
++ u32 vdd, target_opp_no;
++ u32 vc_bypass_value;
++ u32 reg_addr = 0;
++ u32 loop_cnt = 0, retries_cnt = 0;
++
++ vdd = get_vdd(target_opp);
++ target_opp_no = get_opp_no(target_opp);
++
++ if (vdd == PRCM_VDD1) {
++ sr_status = sr_stop_vddautocomap(SR1);
++
++ PRM_VC_CMD_VAL_0 = (PRM_VC_CMD_VAL_0 & ~PRM_VC_CMD_ON_MASK) |
++ (vsel << PRM_VC_CMD_ON_SHIFT);
++ reg_addr = R_VDD1_SR_CONTROL;
++
++ } else if (vdd == PRCM_VDD2) {
++ sr_status = sr_stop_vddautocomap(SR2);
++
++ PRM_VC_CMD_VAL_1 = (PRM_VC_CMD_VAL_1 & ~PRM_VC_CMD_ON_MASK) |
++ (vsel << PRM_VC_CMD_ON_SHIFT);
++ reg_addr = R_VDD2_SR_CONTROL;
++ }
++
++ vc_bypass_value = (vsel << PRM_VC_BYPASS_DATA_SHIFT) |
++ (reg_addr << PRM_VC_BYPASS_REGADDR_SHIFT) |
++ (R_SRI2C_SLAVE_ADDR << PRM_VC_BYPASS_SLAVEADDR_SHIFT);
++
++ PRM_VC_BYPASS_VAL = vc_bypass_value;
++
++ PRM_VC_BYPASS_VAL |= PRM_VC_BYPASS_VALID;
++
++ DPRINTK("%s : PRM_VC_BYPASS_VAL %X\n", __func__, PRM_VC_BYPASS_VAL);
++ DPRINTK("PRM_IRQST_MPU %X\n", PRM_IRQSTATUS_MPU);
++
++ while ((PRM_VC_BYPASS_VAL & PRM_VC_BYPASS_VALID) != 0x0) {
++ ret = loop_wait(&loop_cnt, &retries_cnt, 10);
++ if (ret != PRCM_PASS) {
++ printk(KERN_INFO "Loop count exceeded in check SR I2C"
++ "write\n");
++ return ret;
++ }
++ }
++
++ omap_udelay(T2_SMPS_UPDATE_DELAY);
++
++ if (sr_status) {
++ if (vdd == PRCM_VDD1)
++ sr_start_vddautocomap(SR1, target_opp_no);
++ else if (vdd == PRCM_VDD2)
++ sr_start_vddautocomap(SR2, target_opp_no);
++ }
++
++ return SR_PASS;
++}
++
++/* Sysfs interface to select SR VDD1 auto compensation */
++static ssize_t omap_sr_vdd1_autocomp_show(struct kset *subsys, char *buf)
++{
++ return sprintf(buf, "%d\n", sr1.is_autocomp_active);
++}
++
++static ssize_t omap_sr_vdd1_autocomp_store(struct kset *subsys,
++ const char *buf, size_t n)
++{
++ u32 current_vdd1opp_no;
++ unsigned short value;
++
++ if (sscanf(buf, "%hu", &value) != 1 || (value > 1)) {
++ printk(KERN_ERR "sr_vdd1_autocomp: Invalid value\n");
++ return -EINVAL;
++ }
++
++ current_vdd1opp_no = get_opp_no(current_vdd1_opp);
++
++ if (value == 0)
++ sr_stop_vddautocomap(SR1);
++ else
++ sr_start_vddautocomap(SR1, current_vdd1opp_no);
++
++ return n;
++}
++
++static struct subsys_attribute sr_vdd1_autocomp = {
++ .attr = {
++ .name = __stringify(sr_vdd1_autocomp),
++ .mode = 0644,
++ },
++ .show = omap_sr_vdd1_autocomp_show,
++ .store = omap_sr_vdd1_autocomp_store,
++};
++
++/* Sysfs interface to select SR VDD2 auto compensation */
++static ssize_t omap_sr_vdd2_autocomp_show(struct kset *subsys, char *buf)
++{
++ return sprintf(buf, "%d\n", sr2.is_autocomp_active);
++}
++
++static ssize_t omap_sr_vdd2_autocomp_store(struct kset *subsys,
++ const char *buf, size_t n)
++{
++ u32 current_vdd2opp_no;
++ unsigned short value;
++
++ if (sscanf(buf, "%hu", &value) != 1 || (value > 1)) {
++ printk(KERN_ERR "sr_vdd2_autocomp: Invalid value\n");
++ return -EINVAL;
++ }
++
++ current_vdd2opp_no = get_opp_no(current_vdd2_opp);
++
++ if (value == 0)
++ sr_stop_vddautocomap(SR2);
++ else
++ sr_start_vddautocomap(SR2, current_vdd2opp_no);
++
++ return n;
++}
++
++static struct subsys_attribute sr_vdd2_autocomp = {
++ .attr = {
++ .name = __stringify(sr_vdd2_autocomp),
++ .mode = 0644,
++ },
++ .show = omap_sr_vdd2_autocomp_show,
++ .store = omap_sr_vdd2_autocomp_store,
++};
++
++
++
++static int __init omap3_sr_init(void)
++{
++ int ret = 0;
++ u8 RdReg;
++
++#ifdef CONFIG_ARCH_OMAP34XX
++ sr1.fck = clk_get(NULL, "sr1_fck");
++ if (IS_ERR(sr1.fck))
++ printk(KERN_ERR "Could not get sr1_fck\n");
++
++ sr2.fck = clk_get(NULL, "sr2_fck");
++ if (IS_ERR(sr2.fck))
++ printk(KERN_ERR "Could not get sr2_fck\n");
++#endif /* #ifdef CONFIG_ARCH_OMAP34XX */
++
++ /* Call the VPConfig, VCConfig, set N Values. */
++ sr_set_nvalues(&sr1);
++ sr_configure_vp(SR1);
++
++ sr_set_nvalues(&sr2);
++ sr_configure_vp(SR2);
++
++ sr_configure_vc();
++
++ /* Enable SR on T2 */
++ ret = t2_in(PM_RECEIVER, &RdReg, R_DCDC_GLOBAL_CFG);
++ RdReg |= DCDC_GLOBAL_CFG_ENABLE_SRFLX;
++ ret |= t2_out(PM_RECEIVER, RdReg, R_DCDC_GLOBAL_CFG);
++
++
++ printk(KERN_INFO "SmartReflex driver initialized\n");
++
++ ret = subsys_create_file(&power_subsys, &sr_vdd1_autocomp);
++ if (ret)
++ printk(KERN_ERR "subsys_create_file failed: %d\n", ret);
++
++ ret = subsys_create_file(&power_subsys, &sr_vdd2_autocomp);
++ if (ret)
++ printk(KERN_ERR "subsys_create_file failed: %d\n", ret);
++
++ return 0;
++}
++
++arch_initcall(omap3_sr_init);
+diff --git a/arch/arm/mach-omap2/smartreflex.h b/arch/arm/mach-omap2/smartreflex.h
+new file mode 100644
+index 0000000..62907ef
+--- /dev/null
++++ b/arch/arm/mach-omap2/smartreflex.h
+@@ -0,0 +1,136 @@
++/*
++ * linux/arch/arm/mach-omap3/smartreflex.h
++ *
++ * Copyright (C) 2007 Texas Instruments, Inc.
++ * Lesly A M <x0080970@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.
++ */
++
++
++/* SR Modules */
++#define SR1 1
++#define SR2 2
++
++#define SR_FAIL 1
++#define SR_PASS 0
++
++#define SR_TRUE 1
++#define SR_FALSE 0
++
++#define GAIN_MAXLIMIT 16
++#define R_MAXLIMIT 256
++
++#define SR1_CLK_ENABLE (0x1 << 6)
++#define SR2_CLK_ENABLE (0x1 << 7)
++
++/* PRM_VP1_CONFIG */
++#define PRM_VP1_CONFIG_ERROROFFSET (0x00 << 24)
++#define PRM_VP1_CONFIG_ERRORGAIN (0x20 << 16)
++
++#define PRM_VP1_CONFIG_INITVOLTAGE (0x30 << 8) /* 1.2 volt */
++#define PRM_VP1_CONFIG_TIMEOUTEN (0x1 << 3)
++#define PRM_VP1_CONFIG_INITVDD (0x1 << 2)
++#define PRM_VP1_CONFIG_FORCEUPDATE (0x1 << 1)
++#define PRM_VP1_CONFIG_VPENABLE (0x1 << 0)
++
++/* PRM_VP1_VSTEPMIN */
++#define PRM_VP1_VSTEPMIN_SMPSWAITTIMEMIN (0x01F4 << 8)
++#define PRM_VP1_VSTEPMIN_VSTEPMIN (0x01 << 0)
++
++/* PRM_VP1_VSTEPMAX */
++#define PRM_VP1_VSTEPMAX_SMPSWAITTIMEMAX (0x01F4 << 8)
++#define PRM_VP1_VSTEPMAX_VSTEPMAX (0x04 << 0)
++
++/* PRM_VP1_VLIMITTO */
++#define PRM_VP1_VLIMITTO_VDDMAX (0x3C << 24)
++#define PRM_VP1_VLIMITTO_VDDMIN (0x0 << 16)
++#define PRM_VP1_VLIMITTO_TIMEOUT (0xFFFF << 0)
++
++/* PRM_VP2_CONFIG */
++#define PRM_VP2_CONFIG_ERROROFFSET (0x00 << 24)
++#define PRM_VP2_CONFIG_ERRORGAIN (0x20 << 16)
++
++#define PRM_VP2_CONFIG_INITVOLTAGE (0x30 << 8) /* 1.2 volt */
++#define PRM_VP2_CONFIG_TIMEOUTEN (0x1 << 3)
++#define PRM_VP2_CONFIG_INITVDD (0x1 << 2)
++#define PRM_VP2_CONFIG_FORCEUPDATE (0x1 << 1)
++#define PRM_VP2_CONFIG_VPENABLE (0x1 << 0)
++
++/* PRM_VP2_VSTEPMIN */
++#define PRM_VP2_VSTEPMIN_SMPSWAITTIMEMIN (0x01F4 << 8)
++#define PRM_VP2_VSTEPMIN_VSTEPMIN (0x01 << 0)
++
++/* PRM_VP2_VSTEPMAX */
++#define PRM_VP2_VSTEPMAX_SMPSWAITTIMEMAX (0x01F4 << 8)
++#define PRM_VP2_VSTEPMAX_VSTEPMAX (0x04 << 0)
++
++/* PRM_VP2_VLIMITTO */
++#define PRM_VP2_VLIMITTO_VDDMAX (0x2C << 24)
++#define PRM_VP2_VLIMITTO_VDDMIN (0x0 << 16)
++#define PRM_VP2_VLIMITTO_TIMEOUT (0xFFFF << 0)
++
++/* SRCONFIG */
++#define SR1_SRCONFIG_ACCUMDATA (0x1F4 << 22)
++#define SR2_SRCONFIG_ACCUMDATA (0x1F4 << 22)
++
++#define SRCLKLENGTH_12MHZ_SYSCLK 0x3C
++#define SRCLKLENGTH_13MHZ_SYSCLK 0x41
++#define SRCLKLENGTH_19MHZ_SYSCLK 0x60
++#define SRCLKLENGTH_26MHZ_SYSCLK 0x82
++#define SRCLKLENGTH_38MHZ_SYSCLK 0xC0
++
++#define SRCONFIG_SRCLKLENGTH_SHIFT 12
++#define SRCONFIG_SENNENABLE_SHIFT 5
++#define SRCONFIG_SENPENABLE_SHIFT 3
++
++#define SRCONFIG_SRENABLE (0x01 << 11)
++#define SRCONFIG_SENENABLE (0x01 << 10)
++#define SRCONFIG_ERRGEN_EN (0x01 << 9)
++#define SRCONFIG_MINMAXAVG_EN (0x01 << 8)
++
++#define SRCONFIG_DELAYCTRL (0x01 << 2)
++#define SRCONFIG_CLKCTRL (0x00 << 0)
++
++/* AVGWEIGHT */
++#define SR1_AVGWEIGHT_SENPAVGWEIGHT (0x03 << 2)
++#define SR1_AVGWEIGHT_SENNAVGWEIGHT (0x03 << 0)
++
++#define SR2_AVGWEIGHT_SENPAVGWEIGHT (0x01 << 2)
++#define SR2_AVGWEIGHT_SENNAVGWEIGHT (0x01 << 0)
++
++/* NVALUERECIPROCAL */
++#define NVALUERECIPROCAL_SENPGAIN_SHIFT 20
++#define NVALUERECIPROCAL_SENNGAIN_SHIFT 16
++#define NVALUERECIPROCAL_RNSENP_SHIFT 8
++#define NVALUERECIPROCAL_RNSENN_SHIFT 0
++
++/* ERRCONFIG */
++#define SR_CLKACTIVITY_MASK (0x03 << 20)
++#define SR_ERRWEIGHT_MASK (0x07 << 16)
++#define SR_ERRMAXLIMIT_MASK (0xFF << 8)
++#define SR_ERRMINLIMIT_MASK (0xFF << 0)
++
++#define SR_CLKACTIVITY_IOFF_FOFF (0x00 << 20)
++#define SR_CLKACTIVITY_IOFF_FON (0x02 << 20)
++
++#define ERRCONFIG_VPBOUNDINTEN (0x1 << 31)
++#define ERRCONFIG_VPBOUNDINTST (0x1 << 30)
++
++#define SR1_ERRWEIGHT (0x07 << 16)
++#define SR1_ERRMAXLIMIT (0x02 << 8)
++#define SR1_ERRMINLIMIT (0xFA << 0)
++
++#define SR2_ERRWEIGHT (0x07 << 16)
++#define SR2_ERRMAXLIMIT (0x02 << 8)
++#define SR2_ERRMINLIMIT (0xF9 << 0)
++
++extern u32 current_vdd1_opp;
++extern u32 current_vdd2_opp;
++extern struct kset power_subsys;
++
++extern inline int loop_wait(u32 *lcnt, u32 *rcnt, u32 delay);
++extern void omap_udelay(u32 udelay);
++
+--
+1.5.4.3
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 04:49:44 +0000