| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * (C) Copyright 2016 Nexell |
| * Youngbok, Park <park@nexell.co.kr> |
| */ |
| |
| #include <asm/arch/nexell.h> |
| #include <asm/arch/clk.h> |
| #include <asm/arch/reset.h> |
| #include <asm/arch/nx_gpio.h> |
| #include <asm/arch/tieoff.h> |
| #include <asm/arch/sec_reg.h> |
| |
| #define NX_PIN_FN_SIZE 4 |
| #define TIEOFF_REG_NUM 33 |
| |
| struct nx_tieoff_registerset { |
| u32 tieoffreg[TIEOFF_REG_NUM]; |
| }; |
| |
| static struct nx_tieoff_registerset *nx_tieoff = (void *)PHY_BASEADDR_TIEOFF; |
| |
| static int tieoff_readl(void __iomem *reg) |
| { |
| if (IS_ENABLED(CONFIG_ARCH_S5P4418)) |
| return read_sec_reg_by_id(reg, NEXELL_TOFF_SEC_ID); |
| else |
| return readl(reg); |
| } |
| |
| static int tieoff_writetl(void __iomem *reg, int val) |
| { |
| if (IS_ENABLED(CONFIG_ARCH_S5P4418)) |
| return write_sec_reg_by_id(reg, val, NEXELL_TOFF_SEC_ID); |
| else |
| return writel(val, reg); |
| } |
| |
| void nx_tieoff_set(u32 tieoff_index, u32 tieoff_value) |
| { |
| u32 regindex, mask; |
| u32 lsb, msb; |
| u32 regval; |
| |
| u32 position; |
| u32 bitwidth; |
| |
| position = tieoff_index & 0xffff; |
| bitwidth = (tieoff_index >> 16) & 0xffff; |
| |
| regindex = position >> 5; |
| |
| lsb = position & 0x1F; |
| msb = lsb + bitwidth; |
| |
| if (msb > 32) { |
| msb &= 0x1F; |
| mask = ~(0xffffffff << lsb); |
| regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) << lsb); |
| tieoff_writetl(&nx_tieoff->tieoffreg[regindex], regval); |
| |
| mask = (0xffffffff << msb); |
| regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) >> msb); |
| tieoff_writetl(&nx_tieoff->tieoffreg[regindex + 1], regval); |
| } else { |
| mask = (0xffffffff << msb) | (~(0xffffffff << lsb)); |
| regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| regval |= ((tieoff_value & ((1UL << bitwidth) - 1)) << lsb); |
| tieoff_writetl(&nx_tieoff->tieoffreg[regindex], regval); |
| } |
| } |
| |
| u32 nx_tieoff_get(u32 tieoff_index) |
| { |
| u32 regindex, mask; |
| u32 lsb, msb; |
| u32 regval; |
| |
| u32 position; |
| u32 bitwidth; |
| |
| position = tieoff_index & 0xffff; |
| bitwidth = (tieoff_index >> 16) & 0xffff; |
| |
| regindex = position / 32; |
| lsb = position % 32; |
| msb = lsb + bitwidth; |
| |
| if (msb > 32) { |
| msb &= 0x1F; |
| mask = 0xffffffff << lsb; |
| regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| regval >>= lsb; |
| |
| mask = ~(0xffffffff << msb); |
| regval |= ((tieoff_readl(&nx_tieoff->tieoffreg[regindex + 1]) |
| & mask) << (32 - lsb)); |
| } else { |
| mask = ~(0xffffffff << msb) & (0xffffffff << lsb); |
| regval = tieoff_readl(&nx_tieoff->tieoffreg[regindex]) & mask; |
| regval >>= lsb; |
| } |
| return regval; |
| } |