dcgu.c
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/*
* (C) Copyright 2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
*
* Original Author Guenter Gebhardt
* Copyright (C) 2006 Micronas GmbH
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/errno.h>
#include "vct.h"
int dcgu_set_clk_switch(enum dcgu_hw_module module, enum dcgu_switch setup)
{
u32 enable;
union dcgu_clk_en1 en1;
union dcgu_clk_en2 en2;
switch (setup) {
case DCGU_SWITCH_ON:
enable = 1;
break;
case DCGU_SWITCH_OFF:
enable = 0;
break;
default:
printf("%s:%i:Invalid clock switch: %i\n", __FILE__, __LINE__,
setup);
return -EINVAL;
}
if (module == DCGU_HW_MODULE_CPU)
en2.reg = reg_read(DCGU_CLK_EN2(DCGU_BASE));
else
en1.reg = reg_read(DCGU_CLK_EN1(DCGU_BASE));
switch (module) {
case DCGU_HW_MODULE_MSMC:
en1.bits.en_clkmsmc = enable;
break;
case DCGU_HW_MODULE_SSI_S:
en1.bits.en_clkssi_s = enable;
break;
case DCGU_HW_MODULE_SSI_M:
en1.bits.en_clkssi_m = enable;
break;
case DCGU_HW_MODULE_SMC:
en1.bits.en_clksmc = enable;
break;
case DCGU_HW_MODULE_EBI:
en1.bits.en_clkebi = enable;
break;
case DCGU_HW_MODULE_USB_PLL:
en1.bits.en_usbpll = enable;
break;
case DCGU_HW_MODULE_USB_60:
en1.bits.en_clkusb60 = enable;
break;
case DCGU_HW_MODULE_USB_24:
en1.bits.en_clkusb24 = enable;
break;
case DCGU_HW_MODULE_UART_2:
en1.bits.en_clkuart2 = enable;
break;
case DCGU_HW_MODULE_UART_1:
en1.bits.en_clkuart1 = enable;
break;
case DCGU_HW_MODULE_PERI:
en1.bits.en_clkperi20 = enable;
break;
case DCGU_HW_MODULE_CPU:
en2.bits.en_clkcpu = enable;
break;
case DCGU_HW_MODULE_I2S:
en1.bits.en_clk_i2s_dly = enable;
break;
case DCGU_HW_MODULE_ABP_SCC:
en1.bits.en_clk_scc_abp = enable;
break;
case DCGU_HW_MODULE_SPDIF:
en1.bits.en_clk_dtv_spdo = enable;
break;
case DCGU_HW_MODULE_AD:
en1.bits.en_clkad = enable;
break;
case DCGU_HW_MODULE_MVD:
en1.bits.en_clkmvd = enable;
break;
case DCGU_HW_MODULE_TSD:
en1.bits.en_clktsd = enable;
break;
case DCGU_HW_MODULE_GA:
en1.bits.en_clkga = enable;
break;
case DCGU_HW_MODULE_DVP:
en1.bits.en_clkdvp = enable;
break;
case DCGU_HW_MODULE_MR2:
en1.bits.en_clkmr2 = enable;
break;
case DCGU_HW_MODULE_MR1:
en1.bits.en_clkmr1 = enable;
break;
default:
printf("%s:%i:Invalid hardware module: %i\n", __FILE__,
__LINE__, module);
return -EINVAL;
}
/*
* The reg_read() following the reg_write() below forces the write to
* be really done on the bus.
* Otherwise the clock may not be switched on when this API function
* returns, which may cause an bus error if a registers of the hardware
* module connected to the clock is accessed.
*/
if (module == DCGU_HW_MODULE_CPU) {
reg_write(DCGU_CLK_EN2(DCGU_BASE), en2.reg);
en2.reg = reg_read(DCGU_CLK_EN2(DCGU_BASE));
} else {
reg_write(DCGU_CLK_EN1(DCGU_BASE), en1.reg);
en1.reg = reg_read(DCGU_CLK_EN1(DCGU_BASE));
}
return 0;
}
int dcgu_set_reset_switch(enum dcgu_hw_module module, enum dcgu_switch setup)
{
union dcgu_reset_unit1 val;
u32 enable;
switch (setup) {
case DCGU_SWITCH_ON:
enable = 1;
break;
case DCGU_SWITCH_OFF:
enable = 0;
break;
default:
printf("%s:%i:Invalid reset switch: %i\n", __FILE__, __LINE__,
setup);
return -EINVAL;
}
val.reg = reg_read(DCGU_RESET_UNIT1(DCGU_BASE));
switch (module) {
case DCGU_HW_MODULE_MSMC:
val.bits.swreset_clkmsmc = enable;
break;
case DCGU_HW_MODULE_SSI_S:
val.bits.swreset_clkssi_s = enable;
break;
case DCGU_HW_MODULE_SSI_M:
val.bits.swreset_clkssi_m = enable;
break;
case DCGU_HW_MODULE_SMC:
val.bits.swreset_clksmc = enable;
break;
case DCGU_HW_MODULE_EBI:
val.bits.swreset_clkebi = enable;
break;
case DCGU_HW_MODULE_USB_60:
val.bits.swreset_clkusb60 = enable;
break;
case DCGU_HW_MODULE_USB_24:
val.bits.swreset_clkusb24 = enable;
break;
case DCGU_HW_MODULE_UART_2:
val.bits.swreset_clkuart2 = enable;
break;
case DCGU_HW_MODULE_UART_1:
val.bits.swreset_clkuart1 = enable;
break;
case DCGU_HW_MODULE_PWM:
val.bits.swreset_pwm = enable;
break;
case DCGU_HW_MODULE_GPT:
val.bits.swreset_gpt = enable;
break;
case DCGU_HW_MODULE_I2C2:
val.bits.swreset_i2c2 = enable;
break;
case DCGU_HW_MODULE_I2C1:
val.bits.swreset_i2c1 = enable;
break;
case DCGU_HW_MODULE_GPIO2:
val.bits.swreset_gpio2 = enable;
break;
case DCGU_HW_MODULE_GPIO1:
val.bits.swreset_gpio1 = enable;
break;
case DCGU_HW_MODULE_CPU:
val.bits.swreset_clkcpu = enable;
break;
case DCGU_HW_MODULE_I2S:
val.bits.swreset_clk_i2s_dly = enable;
break;
case DCGU_HW_MODULE_ABP_SCC:
val.bits.swreset_clk_scc_abp = enable;
break;
case DCGU_HW_MODULE_SPDIF:
val.bits.swreset_clk_dtv_spdo = enable;
break;
case DCGU_HW_MODULE_AD:
val.bits.swreset_clkad = enable;
break;
case DCGU_HW_MODULE_MVD:
val.bits.swreset_clkmvd = enable;
break;
case DCGU_HW_MODULE_TSD:
val.bits.swreset_clktsd = enable;
break;
case DCGU_HW_MODULE_TSIO:
val.bits.swreset_clktsio = enable;
break;
case DCGU_HW_MODULE_GA:
val.bits.swreset_clkga = enable;
break;
case DCGU_HW_MODULE_MPC:
val.bits.swreset_clkmpc = enable;
break;
case DCGU_HW_MODULE_CVE:
val.bits.swreset_clkcve = enable;
break;
case DCGU_HW_MODULE_DVP:
val.bits.swreset_clkdvp = enable;
break;
case DCGU_HW_MODULE_MR2:
val.bits.swreset_clkmr2 = enable;
break;
case DCGU_HW_MODULE_MR1:
val.bits.swreset_clkmr1 = enable;
break;
default:
printf("%s:%i:Invalid hardware module: %i\n", __FILE__,
__LINE__, module);
return -EINVAL;
}
reg_write(DCGU_RESET_UNIT1(DCGU_BASE), val.reg);
return 0;
}