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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
182 lines
5.0 KiB
C
182 lines
5.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix at windriver.com>
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*
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* twl4030_power_reset_init is derived from code on omapzoom,
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* git://git.omapzoom.com/repo/u-boot.git
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*
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* Copyright (C) 2007-2009 Texas Instruments, Inc.
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*
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* twl4030_power_init is from cpu/omap3/common.c, power_init_r
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*
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* (C) Copyright 2004-2008
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Sunil Kumar <sunilsaini05 at gmail.com>
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* Shashi Ranjan <shashiranjanmca05 at gmail.com>
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*
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* Derived from Beagle Board and 3430 SDP code by
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* Richard Woodruff <r-woodruff2 at ti.com>
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* Syed Mohammed Khasim <khasim at ti.com>
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*/
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#include <twl4030.h>
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/*
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* Power Reset
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*/
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void twl4030_power_reset_init(void)
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{
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u8 val = 0;
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if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_P1_SW_EVENTS, &val)) {
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printf("Error:TWL4030: failed to read the power register\n");
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printf("Could not initialize hardware reset\n");
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} else {
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val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;
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if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_P1_SW_EVENTS, val)) {
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printf("Error:TWL4030: failed to write the power register\n");
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printf("Could not initialize hardware reset\n");
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}
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}
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}
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/*
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* Power off
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*/
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void twl4030_power_off(void)
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{
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u8 data;
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/* PM master unlock (CFG and TST keys) */
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data = 0xCE;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_PROTECT_KEY, data);
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data = 0xEC;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_PROTECT_KEY, data);
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/* VBAT start disable */
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_P1_TRANSITION, &data);
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data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_P1_TRANSITION, data);
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_P2_TRANSITION, &data);
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data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_P2_TRANSITION, data);
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_P3_TRANSITION, &data);
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data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_P3_TRANSITION, data);
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/* High jitter for PWRANA2 */
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_PWRANA2, &data);
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data &= ~(TWL4030_PM_MASTER_CFG_PWRANA2_LOJIT0_LOWV |
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TWL4030_PM_MASTER_CFG_PWRANA2_LOJIT1_LOWV);
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_CFG_PWRANA2, data);
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/* PM master lock */
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data = 0xFF;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_PROTECT_KEY, data);
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/* Power off */
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twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_P1_SW_EVENTS, &data);
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data |= TWL4030_PM_MASTER_SW_EVENTS_DEVOFF;
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
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TWL4030_PM_MASTER_P1_SW_EVENTS, data);
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}
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/*
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* Set Device Group and Voltage
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*/
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void twl4030_pmrecv_vsel_cfg(u8 vsel_reg, u8 vsel_val,
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u8 dev_grp, u8 dev_grp_sel)
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{
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int ret;
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/* Select the Voltage */
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ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_reg,
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vsel_val);
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if (ret != 0) {
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printf("Could not write vsel to reg %02x (%d)\n",
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vsel_reg, ret);
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return;
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}
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/* Select the Device Group (enable the supply if dev_grp_sel != 0) */
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ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp,
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dev_grp_sel);
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if (ret != 0)
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printf("Could not write grp_sel to reg %02x (%d)\n",
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dev_grp, ret);
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}
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void twl4030_power_init(void)
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{
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/* set VAUX3 to 2.8V */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX3_DEDICATED,
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TWL4030_PM_RECEIVER_VAUX3_VSEL_28,
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TWL4030_PM_RECEIVER_VAUX3_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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/* set VPLL2 to 1.8V */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VPLL2_DEDICATED,
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TWL4030_PM_RECEIVER_VPLL2_VSEL_18,
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TWL4030_PM_RECEIVER_VPLL2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_ALL);
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/* set VDAC to 1.8V */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VDAC_DEDICATED,
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TWL4030_PM_RECEIVER_VDAC_VSEL_18,
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TWL4030_PM_RECEIVER_VDAC_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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}
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void twl4030_power_mmc_init(int dev_index)
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{
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if (dev_index == 0) {
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/* Set VMMC1 to 3.15 Volts */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED,
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TWL4030_PM_RECEIVER_VMMC1_VSEL_32,
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TWL4030_PM_RECEIVER_VMMC1_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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mdelay(100); /* ramp-up delay from Linux code */
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} else if (dev_index == 1) {
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/* Set VMMC2 to 3.15 Volts */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC2_DEDICATED,
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TWL4030_PM_RECEIVER_VMMC2_VSEL_32,
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TWL4030_PM_RECEIVER_VMMC2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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mdelay(100); /* ramp-up delay from Linux code */
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}
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}
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#ifdef CONFIG_CMD_POWEROFF
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int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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twl4030_power_off();
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return 0;
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}
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#endif
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