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/*
* Copyright (C) 2012 Spreadtrum Communications Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/io.h>
#ifndef CONFIG_64BIT
#include <soc/sprd/hardware.h>
#include <soc/sprd/board.h>
#include <mach/irqs.h>
#else
#include <soc/sprd/irqs.h>
#endif
#include <soc/sprd/sci.h>
#include <soc/sprd/sci_glb_regs.h>
#include <linux/sprd_iommu.h>
#include <linux/delay.h>
#include <linux/of_gpio.h>
#include "dcam_drv.h"
//#define PARSE_DEBUG
#ifdef PARSE_DEBUG
#define PARSE_TRACE printk
#else
#define PARSE_TRACE pr_debug
#endif
#ifdef CONFIG_SC_FPGA
#define CLK_MM_I_IN_CLOCKTREE 0
#else
#define CLK_MM_I_IN_CLOCKTREE 1
#endif
#ifdef CONFIG_OF
unsigned long dcam_regbase = 0 ;
unsigned long isp_regbase = 0;
unsigned long csi_regbase = 0;
#else
#endif
static atomic_t mm_enabe_cnt = ATOMIC_INIT(0);
void parse_baseaddress(struct device_node *dn)
{
#ifdef CONFIG_OF
struct resource r;
if (0 == of_address_to_resource(dn, 0, &r)) {
PARSE_TRACE("PARSE BASE=0x%x\n", r.start);
} else {
PARSE_TRACE("PARSE BASE ADDRESS ERROR\n");
return;
}
if (dcam_regbase == 0 && strcmp(dn->name, "sprd_dcam") == 0) {
dcam_regbase = ioremap_nocache(r.start, resource_size(&r));
PARSE_TRACE("Dcam register base addr: 0x%lx\n", dcam_regbase);
} else if (isp_regbase == 0 && strcmp(dn->name, "sprd_isp") == 0) {
isp_regbase = ioremap_nocache(r.start, resource_size(&r));
PARSE_TRACE("Isp register base addr: 0x%lx\n", isp_regbase);
} else if (csi_regbase == 0 && strcmp(dn->name, "sprd_sensor") == 0) {
csi_regbase = ioremap_nocache(r.start, resource_size(&r));
PARSE_TRACE("Csi register base addr: 0x%lx\n", csi_regbase);
}
#endif
}
uint32_t parse_irq(struct device_node *dn)
{
#ifdef CONFIG_OF
return irq_of_parse_and_map(dn, 0);
#else
return DCAM_IRQ;
#endif
}
struct clk * parse_clk(struct device_node *dn, char *clkname)
{
#ifdef CONFIG_OF
PARSE_TRACE("parse_clk %s \n",clkname);
return of_clk_get_by_name(dn, clkname);
#else
return clk_get(NULL, clkname);
#endif
}
int32_t clk_mm_i_eb(struct device_node *dn, uint32_t enable)
{
#ifdef CONFIG_SC_FPGA_CLK
return 0;
#else
#if CLK_MM_I_IN_CLOCKTREE
int ret = 0;
struct clk* clk_mm_i = NULL;
clk_mm_i = parse_clk(dn, "clk_mm_i");
if (IS_ERR(clk_mm_i)) {
printk("clk_mm_i_eb: get fail.\n");
return -1;
}
if(enable){
ret = clk_enable(clk_mm_i);
if (ret) {
printk("clk_mm_i_eb: enable fail.\n");
return -1;
}
#if defined(CONFIG_SPRD_IOMMU)
{
sprd_iommu_module_enable(IOMMU_MM);
}
#endif
PARSE_TRACE("clk_mm_i_eb enable ok.\n");
atomic_inc(&mm_enabe_cnt);
}else{
#if defined(CONFIG_SPRD_IOMMU)
{
sprd_iommu_module_disable(IOMMU_MM);
}
#endif
clk_disable(clk_mm_i);
clk_put(clk_mm_i);
clk_mm_i = NULL;
udelay(500);
atomic_dec(&mm_enabe_cnt);
PARSE_TRACE("clk_mm_i_eb disable ok.\n");
}
#else
if(enable){
if(atomic_inc_return(&mm_enabe_cnt) == 1) {
REG_OWR(REG_AON_APB_APB_EB0,BIT_MM_EB);
REG_AWR(REG_PMU_APB_PD_MM_TOP_CFG,~BIT_PD_MM_TOP_FORCE_SHUTDOWN);
REG_OWR(REG_MM_AHB_GEN_CKG_CFG,BIT_SENSOR_CKG_EN|BIT_DCAM_AXI_CKG_EN);
PARSE_TRACE("mm enable ok.\n");
}
}else{
if(atomic_dec_return(&mm_enabe_cnt) == 0) {
REG_AWR(REG_MM_AHB_GEN_CKG_CFG,~(BIT_SENSOR_CKG_EN|BIT_DCAM_AXI_CKG_EN));
REG_OWR(REG_PMU_APB_PD_MM_TOP_CFG,BIT_PD_MM_TOP_FORCE_SHUTDOWN);
REG_AWR(REG_AON_APB_APB_EB0,~BIT_MM_EB);
udelay(500);
PARSE_TRACE("mm disable ok.\n");
}
}
#endif
PARSE_TRACE("mm_enabe_cnt = %d.\n",atomic_read(&mm_enabe_cnt));
#ifdef PARSE_DEBUG
if(enable)
mm_clk_register_trace();
#endif
return 0;
#endif
}
#ifndef GPIO_SUB_SENSOR_RESET
#define GPIO_SUB_SENSOR_RESET 0
#endif
#define GPIO_SENSOR_DEV0_PWN GPIO_MAIN_SENSOR_PWN
#define GPIO_SENSOR_DEV1_PWN GPIO_SUB_SENSOR_PWN
#define GPIO_SENSOR_DEV2_PWN 0
#define GPIO_SENSOR_DEV0_RST GPIO_SENSOR_RESET
#define GPIO_SENSOR_DEV1_RST GPIO_SUB_SENSOR_RESET
#define GPIO_SENSOR_DEV2_RST 0
int get_gpio_id(struct device_node *dn, int *pwn, int *reset, uint32_t sensor_id)
{
if (NULL == pwn || NULL == reset)
return -1;
#ifdef CONFIG_OF
if (0 == sensor_id) {
*pwn = of_get_gpio(dn, 1);
*reset = of_get_gpio(dn, 0);
} else if (1 == sensor_id) {
*pwn = of_get_gpio(dn, 3);
*reset = of_get_gpio(dn, 2);
} else {
*pwn = 0;
*reset = 0;
}
#else
if (0 == sensor_id) {
*pwn = GPIO_SENSOR_DEV0_PWN;
*reset = GPIO_SENSOR_DEV0_RST;
} else if (1 == sensor_id) {
*pwn = GPIO_SENSOR_DEV1_PWN;
*reset = GPIO_SENSOR_DEV1_RST;
} else {
*pwn = GPIO_SENSOR_DEV2_PWN;
*reset = GPIO_SENSOR_DEV2_RST;
}
#endif
return 0;
}
int get_gpio_id_ex(struct device_node *dn, int type, int *id, uint32_t sensor_id)
{
if (NULL == id)
return -1;
#ifdef CONFIG_OF
switch (type) {
case GPIO_CAMDVDD:
*id = of_get_gpio(dn, 4);
break;
default:
*id = 0;
break;
}
#else
*id = 0;
#endif
return 0;
}
#ifndef REGU_DEV0_CAMAVDD
#define REGU_DEV0_CAMAVDD "vddcama"
#endif
#ifndef REGU_DEV1_CAMAVDD
#define REGU_DEV1_CAMAVDD "vddcama"
#endif
#ifndef REGU_DEV2_CAMAVDD
#define REGU_DEV2_CAMAVDD "vddcama"
#endif
#ifndef REGU_DEV0_CAMDVDD
#define REGU_DEV0_CAMDVDD "vddcamd"
#endif
#ifndef REGU_DEV1_CAMDVDD
#define REGU_DEV1_CAMDVDD "vddcamd"
#endif
#ifndef REGU_DEV2_CAMDVDD
#define REGU_DEV2_CAMDVDD "vddcamd"
#endif
#ifndef REGU_DEV0_CAMIOVDD
#define REGU_DEV0_CAMIOVDD "vddcamio"
#endif
#ifndef REGU_DEV1_CAMIOVDD
#define REGU_DEV1_CAMIOVDD "vddcamio"
#endif
#ifndef REGU_DEV2_CAMIOVDD
#define REGU_DEV2_CAMIOVDD "vddcamio"
#endif
#ifndef REGU_DEV0_CAMMOT
#define REGU_DEV0_CAMMOT "vddcammot"
#endif
#ifndef REGU_DEV1_CAMMOT
#define REGU_DEV1_CAMMOT "vddcammot"
#endif
#ifndef REGU_DEV2_CAMMOT
#define REGU_DEV2_CAMMOT "vddcammot"
#endif
const char *c_sensor_avdd_name[] = {
REGU_DEV0_CAMAVDD,
REGU_DEV1_CAMAVDD,
REGU_DEV2_CAMAVDD};
const char *c_sensor_iovdd_name[] = {
REGU_DEV0_CAMIOVDD,
REGU_DEV1_CAMIOVDD,
REGU_DEV2_CAMIOVDD};
const char *c_sensor_dvdd_name[] = {
REGU_DEV0_CAMDVDD,
REGU_DEV1_CAMDVDD,
REGU_DEV2_CAMDVDD};
const char *c_sensor_mot_name[] = {
REGU_DEV0_CAMMOT,
REGU_DEV1_CAMMOT,
REGU_DEV2_CAMMOT};
int get_regulator_name(struct device_node *dn, int *type, uint32_t sensor_id, char **name)
{
const char *ldostr;
int ret = 0;
switch (*type) {
case REGU_CAMAVDD:
ret = of_property_read_string_index(dn, "vdds", sensor_id*4 + 1, &ldostr);
if(!ret) {
*name = ldostr;
PARSE_TRACE("REGU_CAMAVDD = >%s\n",*name);
} else {
*name = (char*)c_sensor_avdd_name[sensor_id];
}
break;
case REGU_CAMDVDD:
ret = of_property_read_string_index(dn, "vdds", sensor_id*4 + 2, &ldostr);
if(!ret) {
*name = ldostr;
PARSE_TRACE("REGU_CAMDVDD = >%s\n",*name);
} else {
*name = (char*)c_sensor_dvdd_name[sensor_id];
}
break;
case REGU_CAMIOVDD:
ret = of_property_read_string_index(dn, "vdds", sensor_id*4 + 3, &ldostr);
if(!ret) {
*name = ldostr;
PARSE_TRACE("REGU_CAMIOVDD = >%s\n",*name);
} else {
*name = (char*)c_sensor_iovdd_name[sensor_id];
}
break;
case REGU_CAMMOT:
ret = of_property_read_string_index(dn, "vdds", sensor_id*4, &ldostr);
if(!ret) {
*name = ldostr;
PARSE_TRACE("REGU_CAMMOT = >%s\n",*name);
} else {
*name = (char*)c_sensor_mot_name[sensor_id];
}
break;
default:
break;
}
if(strcmp(name, "vddcammot")==0) {
*type = REGU_CAMMOT;
} else if(strcmp(name, "vddcama")==0){
*type = REGU_CAMAVDD;
} else if(strcmp(name, "vddcamd")==0){
*type = REGU_CAMDVDD;
} else if(strcmp(name, "vddcamio")==0){
*type = REGU_CAMIOVDD;
}
of_node_put(dn);
return 0;
}
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