From patchwork Mon Apr 19 07:56:55 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Babic X-Patchwork-Id: 71763 Return-Path: X-Original-To: wd@gemini.denx.de Delivered-To: wd@gemini.denx.de Received: from diddl.denx.de (diddl.denx.de [10.0.0.6]) by gemini.denx.de (Postfix) with ESMTP id 6845DE22AD9 for ; Mon, 19 Apr 2010 10:00:09 +0200 (CEST) Received: from diddl.denx.de (localhost.localdomain [127.0.0.1]) by diddl.denx.de (Postfix) with ESMTP id 4A129C913130 for ; Mon, 19 Apr 2010 10:00:09 +0200 (CEST) Received: from pop.mnet-online.de by diddl.denx.de with POP3 (fetchmail-6.3.9) for (single-drop); Mon, 19 Apr 2010 10:00:09 +0200 (CEST) Received: from murder (svr19.m-online.net [192.168.3.147]) by backend2 (Cyrus v2.2.12) with LMTPA; Mon, 19 Apr 2010 09:57:41 +0200 X-Sieve: CMU Sieve 2.2 Received: from mail.m-online.net (localhost [127.0.0.1]) by frontend3.pop.m-online.net (Cyrus v2.2.13) with LMTPA; Mon, 19 Apr 2010 09:57:40 +0200 Received: from scanner-1.m-online.net (unknown [192.168.8.165]) by mail.m-online.net (Postfix) with ESMTP id CC4DC20012A; Mon, 19 Apr 2010 09:57:40 +0200 (CEST) Received: from mxin-1.m-online.net ([192.168.6.164]) by scanner-1.m-online.net (scanner-1.m-online.net [192.168.8.165]) (amavisd-new, port 10026) with ESMTP id 17699-02-2; Mon, 19 Apr 2010 09:57:36 +0200 (CEST) Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by mxin-1.m-online.net (Postfix) with ESMTP id 7E36F46C0AE; Mon, 19 Apr 2010 09:57:35 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 6216E28097; Mon, 19 Apr 2010 09:57:32 +0200 (CEST) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3UIFVbrh83dr; Mon, 19 Apr 2010 09:57:31 +0200 (CEST) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 836C128082; Mon, 19 Apr 2010 09:57:25 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 1CDD72807D for ; Mon, 19 Apr 2010 09:57:23 +0200 (CEST) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id y3m4bZ7QTeVO for ; Mon, 19 Apr 2010 09:57:21 +0200 (CEST) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from smtpout23.attiva.biz (smtpout23.attiva.biz [85.37.16.24]) by theia.denx.de (Postfix) with ESMTP id 0CA9A2807C for ; Mon, 19 Apr 2010 09:57:19 +0200 (CEST) Received: from FBCMFE02B22.fbc.local ([192.168.30.31]) by smtpout23.attiva.biz with Microsoft SMTPSVC(6.0.3790.3959); Mon, 19 Apr 2010 09:57:19 +0200 Received: from superpapero.babic.homelinux.org ([81.74.56.14]) by FBCMFE02B22.fbc.local with Microsoft SMTPSVC(6.0.3790.3959); Mon, 19 Apr 2010 09:57:17 +0200 Received: from localhost.localdomain (unknown [192.168.2.236]) by superpapero.babic.homelinux.org (Postfix) with ESMTP id 2A8B116E0002; Mon, 19 Apr 2010 09:57:16 +0200 (CEST) From: Stefano Babic To: u-boot@lists.denx.de Date: Mon, 19 Apr 2010 09:56:55 +0200 Message-Id: <1271663820-7358-1-git-send-email-sbabic@denx.de> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1268756287-2030-1-git-send-email-sbabic@denx.de> References: <1268756287-2030-1-git-send-email-sbabic@denx.de> X-OriginalArrivalTime: 19 Apr 2010 07:57:17.0454 (UTC) FILETIME=[EE4BB2E0:01CADF95] Subject: [U-Boot] [PATCH 1/6] MX: Added Freescale Power Management Driver X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.9 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de X-Virus-Scanned: by amavisd-new at m-online.net The patch add supports for the Freescale's Power Management Controller (known as Atlas) used together with i.MX31/51 processors. It was tested with a MC13783 (MX31) and MC13892 (MX51). Signed-off-by: Stefano Babic --- This replaces: Added MC13892VK Power Management driver. As I saw that the same code could be used for both Power Management controllers MC13873/MC13892, I changed the name in a more neutral way, as Freescale already did. Main changes from the first version: Comments by Tom Rix: - removed unneeded endianess conversions - use coherent of accessors function - hide slave structure inside the driver to avoid the caller mus always check for its status As reported by Tom, the original patches must be combined into a patchset. It was tested on both processors i-MX31 (QONG) and i.MX51(mx51evk). drivers/misc/Makefile | 1 + drivers/misc/fsl_pmic.c | 200 +++++++++++++++++++++++++++++++++++++++++++++++ include/fsl_pmic.h | 128 ++++++++++++++++++++++++++++++ 3 files changed, 329 insertions(+), 0 deletions(-) create mode 100644 drivers/misc/fsl_pmic.c create mode 100644 include/fsl_pmic.h diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index f6df60f..96aa331 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -31,6 +31,7 @@ COBJS-$(CONFIG_FSL_LAW) += fsl_law.o COBJS-$(CONFIG_NS87308) += ns87308.o COBJS-$(CONFIG_STATUS_LED) += status_led.o COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o +COBJS-$(CONFIG_FSL_PMIC) += fsl_pmic.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/misc/fsl_pmic.c b/drivers/misc/fsl_pmic.c new file mode 100644 index 0000000..87f0aed --- /dev/null +++ b/drivers/misc/fsl_pmic.c @@ -0,0 +1,200 @@ +/* + * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +static struct spi_slave *slave; + +struct spi_slave *pmic_spi_probe(void) +{ + return spi_setup_slave(CONFIG_FSL_PMIC_BUS, + CONFIG_FSL_PMIC_CS, + CONFIG_FSL_PMIC_CLK, + CONFIG_FSL_PMIC_MODE); +} + +void pmic_spi_free(struct spi_slave *slave) +{ + if (slave) + spi_free_slave(slave); +} + +u32 pmic_reg(u32 reg, u32 val, u32 write) +{ + u32 pmic_tx, pmic_rx; + + if (!slave) { + slave = pmic_spi_probe(); + + if (!slave) + return -1; + } + + if (reg > 63 || write > 1) { + printf(" = %d is invalid. Should be less then 63\n", + reg); + return -1; + } + + if (spi_claim_bus(slave)) + return -1; + + pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF); + + if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx, + SPI_XFER_BEGIN | SPI_XFER_END)) { + spi_release_bus(slave); + return -1; + } + + if (write) { + pmic_tx &= ~(1 << 31); + if (spi_xfer(slave, 4 << 3, &pmic_tx, &pmic_rx, + SPI_XFER_BEGIN | SPI_XFER_END)) { + spi_release_bus(slave); + return -1; + } + } + + spi_release_bus(slave); + return pmic_rx; +} + +void pmic_reg_write(u32 reg, u32 value) +{ + pmic_reg(reg, value, 1); +} + +u32 pmic_reg_read(u32 reg) +{ + return pmic_reg(reg, 0, 0); +} + +void pmic_show_pmic_info(void) +{ + u32 rev_id; + + rev_id = pmic_reg_read(REG_IDENTIFICATION); + printf("PMIC ID: 0x%08x [Rev: ", rev_id); + switch (rev_id & 0x1F) { + case 0x1: + puts("1.0"); + break; + case 0x9: + puts("1.1"); + break; + case 0xA: + puts("1.2"); + break; + case 0x10: + puts("2.0"); + break; + case 0x11: + puts("2.1"); + break; + case 0x18: + puts("3.0"); + break; + case 0x19: + puts("3.1"); + break; + case 0x1A: + puts("3.2"); + break; + case 0x2: + puts("3.2A"); + break; + case 0x1B: + puts("3.3"); + break; + case 0x1D: + puts("3.5"); + break; + default: + puts("unknown"); + break; + } + puts("]\n"); +} + +static void pmic_dump(int numregs) +{ + u32 val; + int i; + + pmic_show_pmic_info(); + for (i = 0; i < numregs; i++) { + val = pmic_reg_read(i); + if (!(i % 8)) + printf ("\n0x%02x: ", i); + printf("%08x ", val); + } + puts("\n"); +} + +int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + char *cmd; + int nregs; + u32 val; + + /* at least two arguments please */ + if (argc < 2) { + cmd_usage(cmdtp); + return 1; + } + + cmd = argv[1]; + if (strcmp(cmd, "dump") == 0) { + if (argc < 3) { + cmd_usage(cmdtp); + return 1; + } + nregs = simple_strtoul(argv[2], NULL, 16); + pmic_dump(nregs); + return 0; + } + if (strcmp(cmd, "write") == 0) { + if (argc < 4) { + cmd_usage(cmdtp); + return 1; + } + nregs = simple_strtoul(argv[2], NULL, 16); + val = simple_strtoul(argv[3], NULL, 16); + pmic_reg_write(nregs, val); + return 0; + } + /* No subcommand found */ + return 1; +} + +U_BOOT_CMD( + pmic, CONFIG_SYS_MAXARGS, 1, do_pmic, + "Freescale PMIC (Atlas)", + "dump [numregs] dump registers\n" + "pmic write - write register" +); diff --git a/include/fsl_pmic.h b/include/fsl_pmic.h new file mode 100644 index 0000000..e3abde6 --- /dev/null +++ b/include/fsl_pmic.h @@ -0,0 +1,128 @@ +/* + * (C) Copyright 2010 + * Stefano Babic, DENX Software Engineering, sbabic@denx.de. + * + * (C) Copyright 2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __FSL_PMIC_H__ +#define __FSL_PMIC_H__ + +/* + * The registers of different PMIC has the same meaning + * but the bit positions of the fields can differ or + * some fields has a meaning only on some devices. + * You have to check with the internal SPI bitmap + * (see Freescale Documentation) to set the registers + * for the device you are using + */ +enum { + REG_INT_STATUS0 = 0, + REG_INT_MASK0, + REG_INT_SENSE0, + REG_INT_STATUS1, + REG_INT_MASK1, + REG_INT_SENSE1, + REG_PU_MODE_S, + REG_IDENTIFICATION, + REG_UNUSED0, + REG_ACC0, + REG_ACC1, /*10 */ + REG_UNUSED1, + REG_UNUSED2, + REG_POWER_CTL0, + REG_POWER_CTL1, + REG_POWER_CTL2, + REG_REGEN_ASSIGN, + REG_UNUSED3, + REG_MEM_A, + REG_MEM_B, + REG_RTC_TIME, /*20 */ + REG_RTC_ALARM, + REG_RTC_DAY, + REG_RTC_DAY_ALARM, + REG_SW_0, + REG_SW_1, + REG_SW_2, + REG_SW_3, + REG_SW_4, + REG_SW_5, + REG_SETTING_0, /*30 */ + REG_SETTING_1, + REG_MODE_0, + REG_MODE_1, + REG_POWER_MISC, + REG_UNUSED4, + REG_UNUSED5, + REG_UNUSED6, + REG_UNUSED7, + REG_UNUSED8, + REG_UNUSED9, /*40 */ + REG_UNUSED10, + REG_UNUSED11, + REG_ADC0, + REG_ADC1, + REG_ADC2, + REG_ADC3, + REG_ADC4, + REG_CHARGE, + REG_USB0, + REG_USB1, /*50 */ + REG_LED_CTL0, + REG_LED_CTL1, + REG_LED_CTL2, + REG_LED_CTL3, + REG_UNUSED12, + REG_UNUSED13, + REG_TRIM0, + REG_TRIM1, + REG_TEST0, + REG_TEST1, /*60 */ + REG_TEST2, + REG_TEST3, + REG_TEST4, +}; + +/* REG_POWER_MISC */ +#define GPO1EN (1 << 6) +#define GPO1STBY (1 << 7) +#define GPO2EN (1 << 8) +#define GPO2STBY (1 << 9) +#define GPO3EN (1 << 10) +#define GPO3STBY (1 << 11) +#define GPO4EN (1 << 12) +#define GPO4STBY (1 << 13) +#define PWGT1SPIEN (1 << 15) +#define PWGT2SPIEN (1 << 16) +#define PWUP (1 << 21) + +/* Power Control 0 */ +#define COINCHEN (1 << 23) +#define BATTDETEN (1 << 19) + +/* Interrupt status 1 */ +#define RTCRSTI (1 << 7) + +void pmic_show_pmic_info(void); +void pmic_reg_write(u32 reg, u32 value); +u32 pmic_reg_read(u32 reg); + +#endif