Stefan Bosch | 6563ea2 | 2020-07-10 19:07:26 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * (C) Copyright 2016 Nexell |
| 4 | * Youngbok, Park <park@nexell.co.kr> |
| 5 | */ |
| 6 | |
Tom Rini | abb9a04 | 2024-05-18 20:20:43 -0600 | [diff] [blame] | 7 | #include <common.h> |
Stefan Bosch | 6563ea2 | 2020-07-10 19:07:26 +0200 | [diff] [blame] | 8 | #include <asm/arch/nexell.h> |
| 9 | #include <asm/arch/clk.h> |
| 10 | #include <asm/arch/reset.h> |
| 11 | #include <asm/arch/nx_gpio.h> |
| 12 | #include <asm/arch/tieoff.h> |
| 13 | #include <asm/arch/sec_reg.h> |
| 14 | |
| 15 | #define NX_PIN_FN_SIZE 4 |
| 16 | #define TIEOFF_REG_NUM 33 |
| 17 | |
| 18 | struct nx_tieoff_registerset { |
| 19 | u32 tieoffreg[TIEOFF_REG_NUM]; |
| 20 | }; |
| 21 | |
| 22 | static struct nx_tieoff_registerset *nx_tieoff = (void *)PHY_BASEADDR_TIEOFF; |
| 23 | |
| 24 | static int tieoff_readl(void __iomem *reg) |
| 25 | { |
| 26 | if (IS_ENABLED(CONFIG_ARCH_S5P4418)) |
| 27 | return read_sec_reg_by_id(reg, NEXELL_TOFF_SEC_ID); |
| 28 | else |
| 29 | return readl(reg); |
| 30 | } |
| 31 | |
| 32 | static int tieoff_writetl(void __iomem *reg, int val) |
| 33 | { |
| 34 | if (IS_ENABLED(CONFIG_ARCH_S5P4418)) |
| 35 | return write_sec_reg_by_id(reg, val, NEXELL_TOFF_SEC_ID); |
| 36 | else |
| 37 | return writel(val, reg); |
| 38 | } |
| 39 | |
| 40 | void nx_tieoff_set(u32 tieoff_index, u32 tieoff_value) |
| 41 | { |
| 42 | u32 regindex, mask; |
| 43 | u32 lsb, msb; |
| 44 | u32 regval; |
| 45 | |
| 46 | u32 position; |
| 47 | u32 bitwidth; |
| 48 | |
| 49 | position = tieoff_index & 0xffff; |
| 50 | bitwidth = (tieoff_index >> 16) & 0xffff; |
| 51 | |
| 52 | regindex = position >> 5; |
| 53 | |
| 54 | lsb = position & 0x1F; |
| 55 | msb = lsb + bitwidth; |
| 56 | |
| 57 | if (msb > 32) { |
| 58 | msb &= 0x1F; |
| 59 | mask = ~(0xffffffff << lsb); |
| 60 | regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| 61 | regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) << lsb); |
| 62 | tieoff_writetl(&nx_tieoff->tieoffreg[regindex], regval); |
| 63 | |
| 64 | mask = (0xffffffff << msb); |
| 65 | regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| 66 | regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) >> msb); |
| 67 | tieoff_writetl(&nx_tieoff->tieoffreg[regindex + 1], regval); |
| 68 | } else { |
| 69 | mask = (0xffffffff << msb) | (~(0xffffffff << lsb)); |
| 70 | regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| 71 | regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) << lsb); |
| 72 | tieoff_writetl(&nx_tieoff->tieoffreg[regindex], regval); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | u32 nx_tieoff_get(u32 tieoff_index) |
| 77 | { |
| 78 | u32 regindex, mask; |
| 79 | u32 lsb, msb; |
| 80 | u32 regval; |
| 81 | |
| 82 | u32 position; |
| 83 | u32 bitwidth; |
| 84 | |
| 85 | position = tieoff_index & 0xffff; |
| 86 | bitwidth = (tieoff_index >> 16) & 0xffff; |
| 87 | |
| 88 | regindex = position / 32; |
| 89 | lsb = position % 32; |
| 90 | msb = lsb + bitwidth; |
| 91 | |
| 92 | if (msb > 32) { |
| 93 | msb &= 0x1F; |
| 94 | mask = 0xffffffff << lsb; |
| 95 | regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| 96 | regval >>= lsb; |
| 97 | |
| 98 | mask = ~(0xffffffff << msb); |
| 99 | regval |= ((tieoff_readl(&nx_tieoff->tieoffreg[regindex + 1]) |
| 100 | & mask) << (32 - lsb)); |
| 101 | } else { |
| 102 | mask = ~(0xffffffff << msb) & (0xffffffff << lsb); |
| 103 | regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| 104 | regval >>= lsb; |
| 105 | } |
| 106 | return regval; |
| 107 | } |