// SPDX-License-Identifier: GPL-2.0
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#include "ddk750_chip.h"
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#include "ddk750_reg.h"
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#include "ddk750_power.h"
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void ddk750_set_dpms(enum dpms state)
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{
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unsigned int value;
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if (sm750_get_chip_type() == SM750LE) {
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value = peek32(CRT_DISPLAY_CTRL) & ~CRT_DISPLAY_CTRL_DPMS_MASK;
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value |= (state << CRT_DISPLAY_CTRL_DPMS_SHIFT);
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poke32(CRT_DISPLAY_CTRL, value);
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} else {
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value = peek32(SYSTEM_CTRL);
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value = (value & ~SYSTEM_CTRL_DPMS_MASK) | state;
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poke32(SYSTEM_CTRL, value);
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}
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}
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static unsigned int get_power_mode(void)
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{
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if (sm750_get_chip_type() == SM750LE)
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return 0;
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return peek32(POWER_MODE_CTRL) & POWER_MODE_CTRL_MODE_MASK;
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}
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/*
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* SM50x can operate in one of three modes: 0, 1 or Sleep.
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* On hardware reset, power mode 0 is default.
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*/
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void sm750_set_power_mode(unsigned int mode)
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{
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unsigned int ctrl = 0;
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ctrl = peek32(POWER_MODE_CTRL) & ~POWER_MODE_CTRL_MODE_MASK;
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if (sm750_get_chip_type() == SM750LE)
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return;
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switch (mode) {
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case POWER_MODE_CTRL_MODE_MODE0:
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ctrl |= POWER_MODE_CTRL_MODE_MODE0;
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break;
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case POWER_MODE_CTRL_MODE_MODE1:
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ctrl |= POWER_MODE_CTRL_MODE_MODE1;
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break;
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case POWER_MODE_CTRL_MODE_SLEEP:
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ctrl |= POWER_MODE_CTRL_MODE_SLEEP;
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break;
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default:
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break;
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}
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/* Set up other fields in Power Control Register */
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if (mode == POWER_MODE_CTRL_MODE_SLEEP) {
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ctrl &= ~POWER_MODE_CTRL_OSC_INPUT;
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#ifdef VALIDATION_CHIP
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ctrl &= ~POWER_MODE_CTRL_336CLK;
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#endif
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} else {
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ctrl |= POWER_MODE_CTRL_OSC_INPUT;
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#ifdef VALIDATION_CHIP
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ctrl |= POWER_MODE_CTRL_336CLK;
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#endif
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}
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/* Program new power mode. */
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poke32(POWER_MODE_CTRL, ctrl);
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}
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void sm750_set_current_gate(unsigned int gate)
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{
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if (get_power_mode() == POWER_MODE_CTRL_MODE_MODE1)
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poke32(MODE1_GATE, gate);
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else
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poke32(MODE0_GATE, gate);
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}
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/*
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* This function enable/disable the 2D engine.
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*/
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void sm750_enable_2d_engine(unsigned int enable)
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{
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u32 gate;
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gate = peek32(CURRENT_GATE);
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if (enable)
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gate |= (CURRENT_GATE_DE | CURRENT_GATE_CSC);
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else
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gate &= ~(CURRENT_GATE_DE | CURRENT_GATE_CSC);
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sm750_set_current_gate(gate);
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}
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void sm750_enable_dma(unsigned int enable)
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{
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u32 gate;
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/* Enable DMA Gate */
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gate = peek32(CURRENT_GATE);
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if (enable)
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gate |= CURRENT_GATE_DMA;
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else
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gate &= ~CURRENT_GATE_DMA;
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sm750_set_current_gate(gate);
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}
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/*
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* This function enable/disable the GPIO Engine
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*/
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void sm750_enable_gpio(unsigned int enable)
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{
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u32 gate;
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/* Enable GPIO Gate */
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gate = peek32(CURRENT_GATE);
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if (enable)
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gate |= CURRENT_GATE_GPIO;
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else
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gate &= ~CURRENT_GATE_GPIO;
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sm750_set_current_gate(gate);
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}
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/*
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* This function enable/disable the I2C Engine
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*/
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void sm750_enable_i2c(unsigned int enable)
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{
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u32 gate;
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/* Enable I2C Gate */
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gate = peek32(CURRENT_GATE);
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if (enable)
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gate |= CURRENT_GATE_I2C;
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else
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gate &= ~CURRENT_GATE_I2C;
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sm750_set_current_gate(gate);
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}
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