diff options
Diffstat (limited to 'arch/arm/mach-exynos/asv-5250.c')
| -rw-r--r-- | arch/arm/mach-exynos/asv-5250.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/arch/arm/mach-exynos/asv-5250.c b/arch/arm/mach-exynos/asv-5250.c deleted file mode 100644 index 867154f..0000000 --- a/arch/arm/mach-exynos/asv-5250.c +++ /dev/null @@ -1,200 +0,0 @@ -/* linux/arch/arm/mach-exynos/asv-4x12.c - * - * Copyright (c) 2012 Samsung Electronics Co., Ltd. - * http://www.samsung.com/ - * - * EXYNOS5250 - ASV(Adaptive Supply Voltage) driver - * - * 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/init.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/err.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/string.h> - -#include <mach/asv.h> -#include <mach/map.h> - -#include <plat/cpu.h> - -/* ASV function for Fused Chip */ -#define IDS_ARM_OFFSET 24 -#define IDS_ARM_MASK 0xFF -#define HPM_OFFSET 12 -#define HPM_MASK 0x1F - -#define FUSED_SG_OFFSET 3 -#define ORIG_SG_OFFSET 17 -#define ORIG_SG_MASK 0xF -#define MOD_SG_OFFSET 21 -#define MOD_SG_MASK 0x7 - -#define DEFAULT_ASV_GROUP 1 - -#define CHIP_ID_REG (S5P_VA_CHIPID + 0x4) -#define LOT_ID_REG (S5P_VA_CHIPID + 0x14) - -struct asv_judge_table exynos5250_limit[] = { - /* HPM, IDS */ - { 0, 0}, /* Reserved Group */ - { 9, 7}, - { 10, 9}, - { 12, 11}, - { 14, 14}, - { 15, 17}, - { 16, 20}, - { 17, 23}, - { 18, 27}, - { 19, 30}, - {100, 100}, - {999, 999}, /* Reserved Group */ -}; - -static int exynos5250_get_hpm(struct samsung_asv *asv_info) -{ - asv_info->hpm_result = (asv_info->pkg_id >> HPM_OFFSET) & HPM_MASK; - - return 0; -} - -static int exynos5250_get_ids(struct samsung_asv *asv_info) -{ - asv_info->ids_result = (asv_info->pkg_id >> IDS_ARM_OFFSET) & IDS_ARM_MASK; - - return 0; -} - -/* - * If lot id is "NZVPU", it is need to modify for ARM_IDS value - */ -static int exynos5250_check_lot_id(void) -{ - unsigned int lid_reg = 0; - unsigned int rev_lid = 0; - unsigned int i; - unsigned int tmp; - char lot_id[5]; - - lid_reg = __raw_readl(LOT_ID_REG); - - for (i = 0; i < 32; i++) { - tmp = (lid_reg >> i) & 0x1; - rev_lid += tmp << (31 - i); - } - - lot_id[0] = 'N'; - lid_reg = (rev_lid >> 11) & 0x1FFFFF; - - for (i = 4; i >= 1; i--) { - tmp = lid_reg % 36; - lid_reg /= 36; - lot_id[i] = (tmp < 10) ? (tmp + '0') : ((tmp - 10) + 'A'); - } - - return strncmp(lot_id, "NZVPU", ARRAY_SIZE(lot_id)); -} - -static void exynos5250_pre_set_abb(void) -{ - switch (exynos_result_of_asv) { - case 0: - case 1: - case 2: - exynos4x12_set_abb(ABB_MODE_080V); - break; - case 3: - case 4: - exynos4x12_set_abb(ABB_MODE_BYPASS); - break; - default: - exynos4x12_set_abb(ABB_MODE_130V); - break; - } -} - -static int exynos5250_asv_store_result(struct samsung_asv *asv_info) -{ - unsigned int i; - - if (!exynos5250_check_lot_id()) - asv_info->ids_result -= 15; - - if (soc_is_exynos5250()) { - for (i = 0; i < ARRAY_SIZE(exynos5250_limit); i++) { - if ((asv_info->ids_result <= exynos5250_limit[i].ids_limit) || - (asv_info->hpm_result <= exynos5250_limit[i].hpm_limit)) { - exynos_result_of_asv = i; - break; - } - } - } - - /* - * If ASV result value is lower than default value - * Fix with default value. - */ - if (exynos_result_of_asv < DEFAULT_ASV_GROUP) - exynos_result_of_asv = DEFAULT_ASV_GROUP; - - pr_info("EXYNOS5250(NO SG): IDS : %d HPM : %d RESULT : %d\n", - asv_info->ids_result, asv_info->hpm_result, exynos_result_of_asv); - - exynos5250_pre_set_abb(); - - return 0; -} - -int exynos5250_asv_init(struct samsung_asv *asv_info) -{ - unsigned int tmp; - unsigned int exynos_orig_sp; - unsigned int exynos_mod_sp; - int exynos_cal_asv; - - exynos_result_of_asv = 0; - - pr_info("EXYNOS5250: Adaptive Support Voltage init\n"); - - tmp = __raw_readl(CHIP_ID_REG); - - /* Store PKG_ID */ - asv_info->pkg_id = tmp; - - /* If Speed group is fused, get speed group from */ - if ((tmp >> FUSED_SG_OFFSET) & 0x1) { - exynos_orig_sp = (tmp >> ORIG_SG_OFFSET) & ORIG_SG_MASK; - exynos_mod_sp = (tmp >> MOD_SG_OFFSET) & MOD_SG_MASK; - - exynos_cal_asv = exynos_orig_sp - exynos_mod_sp; - /* - * If There is no origin speed group, - * store 1 asv group into exynos_result_of_asv. - */ - if (!exynos_orig_sp) { - pr_info("EXYNOS5250: No Origin speed Group\n"); - exynos_result_of_asv = DEFAULT_ASV_GROUP; - } else { - if (exynos_cal_asv < DEFAULT_ASV_GROUP) - exynos_result_of_asv = DEFAULT_ASV_GROUP; - else - exynos_result_of_asv = exynos_cal_asv; - } - - pr_info("EXYNOS5250(SG): ORIG : %d MOD : %d RESULT : %d\n", - exynos_orig_sp, exynos_mod_sp, exynos_result_of_asv); - - return -EEXIST; - } - - asv_info->get_ids = exynos5250_get_ids; - asv_info->get_hpm = exynos5250_get_hpm; - asv_info->store_result = exynos5250_asv_store_result; - - return 0; -} |