1 // SPDX-License-Identifier: GPL-2.0
2 #include "ddk750_chip.h"
3 #include "ddk750_reg.h"
4 #include "ddk750_power.h"
6 void ddk750_set_dpms(enum dpms state)
10 if (sm750_get_chip_type() == SM750LE) {
11 value = peek32(CRT_DISPLAY_CTRL) & ~CRT_DISPLAY_CTRL_DPMS_MASK;
12 value |= (state << CRT_DISPLAY_CTRL_DPMS_SHIFT);
13 poke32(CRT_DISPLAY_CTRL, value);
15 value = peek32(SYSTEM_CTRL);
16 value = (value & ~SYSTEM_CTRL_DPMS_MASK) | state;
17 poke32(SYSTEM_CTRL, value);
21 static unsigned int get_power_mode(void)
23 if (sm750_get_chip_type() == SM750LE)
25 return peek32(POWER_MODE_CTRL) & POWER_MODE_CTRL_MODE_MASK;
29 * SM50x can operate in one of three modes: 0, 1 or Sleep.
30 * On hardware reset, power mode 0 is default.
32 void sm750_set_power_mode(unsigned int mode)
34 unsigned int ctrl = 0;
36 ctrl = peek32(POWER_MODE_CTRL) & ~POWER_MODE_CTRL_MODE_MASK;
38 if (sm750_get_chip_type() == SM750LE)
42 case POWER_MODE_CTRL_MODE_MODE0:
43 ctrl |= POWER_MODE_CTRL_MODE_MODE0;
46 case POWER_MODE_CTRL_MODE_MODE1:
47 ctrl |= POWER_MODE_CTRL_MODE_MODE1;
50 case POWER_MODE_CTRL_MODE_SLEEP:
51 ctrl |= POWER_MODE_CTRL_MODE_SLEEP;
58 /* Set up other fields in Power Control Register */
59 if (mode == POWER_MODE_CTRL_MODE_SLEEP) {
60 ctrl &= ~POWER_MODE_CTRL_OSC_INPUT;
61 #ifdef VALIDATION_CHIP
62 ctrl &= ~POWER_MODE_CTRL_336CLK;
65 ctrl |= POWER_MODE_CTRL_OSC_INPUT;
66 #ifdef VALIDATION_CHIP
67 ctrl |= POWER_MODE_CTRL_336CLK;
71 /* Program new power mode. */
72 poke32(POWER_MODE_CTRL, ctrl);
75 void sm750_set_current_gate(unsigned int gate)
77 if (get_power_mode() == POWER_MODE_CTRL_MODE_MODE1)
78 poke32(MODE1_GATE, gate);
80 poke32(MODE0_GATE, gate);
84 * This function enable/disable the 2D engine.
86 void sm750_enable_2d_engine(unsigned int enable)
90 gate = peek32(CURRENT_GATE);
92 gate |= (CURRENT_GATE_DE | CURRENT_GATE_CSC);
94 gate &= ~(CURRENT_GATE_DE | CURRENT_GATE_CSC);
96 sm750_set_current_gate(gate);
99 void sm750_enable_dma(unsigned int enable)
103 /* Enable DMA Gate */
104 gate = peek32(CURRENT_GATE);
106 gate |= CURRENT_GATE_DMA;
108 gate &= ~CURRENT_GATE_DMA;
110 sm750_set_current_gate(gate);
114 * This function enable/disable the GPIO Engine
116 void sm750_enable_gpio(unsigned int enable)
120 /* Enable GPIO Gate */
121 gate = peek32(CURRENT_GATE);
123 gate |= CURRENT_GATE_GPIO;
125 gate &= ~CURRENT_GATE_GPIO;
127 sm750_set_current_gate(gate);
131 * This function enable/disable the I2C Engine
133 void sm750_enable_i2c(unsigned int enable)
137 /* Enable I2C Gate */
138 gate = peek32(CURRENT_GATE);
140 gate |= CURRENT_GATE_I2C;
142 gate &= ~CURRENT_GATE_I2C;
144 sm750_set_current_gate(gate);