diff options
author | Randall Spangler <rspangler@chromium.org> | 2013-10-16 13:23:10 -0700 |
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committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-10-23 20:07:25 +0000 |
commit | 8cf03ac0563294fbdeca2dc133d06f0b51c9a546 (patch) | |
tree | 6b07c493e7567a3221d8592b4337d2787d6bc531 /driver/regulator_ir357x.c | |
parent | 2464d08e4d310a3f63208f22df4502c5250c4b58 (diff) | |
download | chrome-ec-8cf03ac0563294fbdeca2dc133d06f0b51c9a546.tar.gz |
Move source files to driver/ and power/ subdirs
The common/ subdir was getting cluttered. Move drivers for external
components to a new driver/ tree, and move what used to be called
chipset_*.c to a new power/ directory.
This does not move/rename header files or CONFIG options. That will
be done in subsequent steps, since moving and modifying .c files in
the same CL is harder to review.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=build all boards; pass unit tests
Change-Id: I67a3003dc8564783a320335cf0e9620a21982d5e
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/173601
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Tested-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Vic Yang <victoryang@chromium.org>
Diffstat (limited to 'driver/regulator_ir357x.c')
-rw-r--r-- | driver/regulator_ir357x.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/driver/regulator_ir357x.c b/driver/regulator_ir357x.c new file mode 100644 index 0000000000..c6966b7e31 --- /dev/null +++ b/driver/regulator_ir357x.c @@ -0,0 +1,247 @@ +/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * IR357x driver. + */ + +#include "common.h" +#include "console.h" +#include "hooks.h" +#include "i2c.h" +#include "timer.h" +#include "uart.h" +#include "util.h" + +/* Console output macros */ +#define CPUTS(outstr) cputs(CC_CHIPSET, outstr) +#define CPRINTF(format, args...) cprintf(CC_CHIPSET, format, ## args) + +/* 8-bit I2C address */ +#define IR357x_I2C_ADDR (0x8 << 1) + +struct ir_setting { + uint8_t reg; + uint8_t value; +}; + +static struct ir_setting ir3570_settings[] = { + {0x10, 0x22}, {0x11, 0x22}, {0x12, 0x88}, {0x13, 0x10}, + {0x14, 0x0d}, {0x15, 0x21}, {0x16, 0x21}, {0x17, 0x00}, + {0x18, 0x00}, {0x19, 0x00}, {0x1a, 0x00}, {0x1b, 0x00}, + {0x1c, 0x00}, {0x1d, 0x00}, {0x1e, 0x00}, {0x1f, 0x00}, + {0x20, 0x00}, {0x21, 0x00}, {0x22, 0x60}, {0x23, 0x60}, + {0x24, 0x74}, {0x25, 0x4e}, {0x26, 0xff}, {0x27, 0x80}, + {0x28, 0x00}, {0x29, 0x20}, {0x2a, 0x15}, {0x2b, 0x26}, + {0x2c, 0xb6}, {0x2d, 0x21}, {0x2e, 0x11}, {0x2f, 0x20}, + {0x30, 0xab}, {0x31, 0x14}, {0x32, 0x90}, {0x33, 0x4d}, + {0x34, 0x75}, {0x35, 0x64}, {0x36, 0x64}, {0x37, 0x09}, + {0x38, 0xc4}, {0x39, 0x20}, {0x3a, 0x80}, {0x3b, 0x00}, + {0x3c, 0x00}, {0x3d, 0xaa}, {0x3e, 0x00}, {0x3f, 0x05}, + {0x40, 0x50}, {0x41, 0x40}, {0x42, 0x00}, {0x43, 0x00}, + {0x44, 0x00}, {0x45, 0x00}, {0x46, 0x00}, {0x47, 0x00}, + {0x48, 0x1c}, {0x49, 0x0c}, {0x4a, 0x0f}, {0x4b, 0x40}, + {0x4c, 0x80}, {0x4d, 0x40}, {0x4e, 0x80}, + {0x51, 0x00}, {0x52, 0x45}, {0x53, 0x59}, + {0x54, 0x23}, {0x55, 0xae}, {0x56, 0x68}, {0x57, 0x24}, + {0x58, 0x62}, {0x59, 0x42}, {0x5a, 0x34}, {0x5b, 0x00}, + {0x5c, 0x30}, {0x5d, 0x05}, {0x5e, 0x02}, {0x5f, 0x35}, + {0x60, 0x30}, {0x61, 0x00}, {0x62, 0xd8}, {0x63, 0x00}, + {0x64, 0x52}, {0x65, 0x28}, {0x66, 0x14}, {0x67, 0x87}, + {0x68, 0x80}, {0x69, 0x00}, {0x6a, 0x00}, {0x6b, 0x00}, + {0x6c, 0x00}, {0x6d, 0xff}, {0x6e, 0x06}, {0x6f, 0xff}, + {0x70, 0xff}, {0x71, 0x20}, {0x72, 0x00}, {0x73, 0x01}, + {0x74, 0x00}, {0x75, 0x00}, {0x76, 0x00}, {0x77, 0x00}, + {0x78, 0x00}, {0x79, 0x00}, {0x7a, 0x00}, {0x7b, 0x00}, + {0x7c, 0x15}, {0x7d, 0x15}, {0x7e, 0x00}, {0x7f, 0x00}, + {0x80, 0x00}, {0x81, 0x00}, {0x82, 0x00}, {0x83, 0x00}, + {0x84, 0x00}, {0x85, 0x00}, {0x86, 0x00}, {0x87, 0x00}, + {0x88, 0x88}, {0x89, 0x88}, {0x8a, 0x01}, {0x8b, 0x42}, + {0x8d, 0x00}, {0x8e, 0x00}, {0x8f, 0x1f}, + {0, 0} +}; + +static struct ir_setting ir3571_settings[] = { + {0x18, 0x22}, {0x19, 0x22}, {0x1a, 0x08}, {0x1b, 0x10}, + {0x1c, 0x06}, {0x1d, 0x21}, {0x1e, 0x21}, {0x1f, 0x83}, + {0x20, 0x83}, {0x21, 0x00}, {0x22, 0x00}, {0x23, 0x00}, + {0x24, 0x00}, {0x25, 0x00}, {0x26, 0x00}, {0x27, 0x34}, + {0x28, 0x34}, {0x29, 0x74}, {0x2a, 0x4e}, {0x2b, 0xff}, + {0x2c, 0x00}, {0x2d, 0x1d}, {0x2e, 0x14}, {0x2f, 0x1f}, + {0x30, 0x88}, {0x31, 0x9a}, {0x32, 0x1e}, {0x33, 0x19}, + {0x34, 0xe9}, {0x35, 0x40}, {0x36, 0x90}, {0x37, 0x6d}, + {0x38, 0x75}, {0x39, 0xa0}, {0x3a, 0x84}, {0x3b, 0x08}, + {0x3c, 0xc5}, {0x3d, 0xa0}, {0x3e, 0x80}, {0x3f, 0xaa}, + {0x40, 0x50}, {0x41, 0x4b}, {0x42, 0x02}, {0x43, 0x04}, + {0x44, 0x00}, {0x45, 0x00}, {0x46, 0x00}, {0x47, 0x78}, + {0x48, 0x56}, {0x49, 0x18}, {0x4a, 0x88}, {0x4b, 0x00}, + {0x4c, 0x80}, {0x4d, 0x60}, {0x4e, 0x60}, {0x4f, 0xff}, + {0x50, 0xff}, {0x51, 0x00}, {0x52, 0x9b}, {0x53, 0xaa}, + {0x54, 0xd8}, {0x55, 0x56}, {0x56, 0x31}, {0x57, 0x1a}, + {0x58, 0x12}, {0x59, 0x63}, {0x5a, 0x00}, {0x5b, 0x09}, + {0x5c, 0x02}, {0x5d, 0x00}, {0x5e, 0xea}, {0x5f, 0x00}, + {0x60, 0xb0}, {0x61, 0x1e}, {0x62, 0x00}, {0x63, 0x56}, + {0x64, 0x00}, {0x65, 0x00}, {0x66, 0x00}, {0x67, 0x00}, + {0x68, 0x28}, {0x69, 0x00}, {0x6a, 0x00}, {0x6b, 0x00}, + {0x6c, 0x00}, {0x6d, 0x00}, {0x6e, 0x00}, {0x6f, 0x00}, + {0x70, 0x80}, {0x71, 0x00}, {0x72, 0x00}, {0x73, 0x00}, + {0x74, 0x00}, {0x75, 0xbf}, {0x76, 0x06}, {0x77, 0xff}, + {0x78, 0xff}, {0x79, 0x04}, {0x7a, 0x00}, {0x7b, 0x1d}, + {0x7c, 0xa0}, {0x7d, 0x10}, {0x7e, 0x00}, {0x7f, 0x8a}, + {0x80, 0x1b}, {0x81, 0x11}, {0x82, 0x00}, {0x83, 0x00}, + {0x84, 0x00}, {0x85, 0x00}, {0x86, 0x00}, {0x87, 0x00}, + {0x88, 0x00}, {0x89, 0x00}, {0x8a, 0x00}, {0x8b, 0x00}, + {0x8c, 0x00}, {0x8d, 0x00}, {0x8e, 0x00}, {0x8f, 0x00}, + {0, 0} +}; + +static uint8_t ir357x_read(uint8_t reg) +{ + int res; + int val; + + res = i2c_read8(I2C_PORT_REGULATOR, IR357x_I2C_ADDR, reg, &val); + if (res) + return 0xee; + + return val; +} + +static void ir357x_write(uint8_t reg, uint8_t val) +{ + int res; + + res = i2c_write8(I2C_PORT_REGULATOR, IR357x_I2C_ADDR, reg, val); + if (res) + CPRINTF("[%T IR I2C write failed]\n"); +} + +static int ir357x_get_version(void) +{ + /* IR3571 on Link EVT */ + if ((ir357x_read(0xfc) == 'I') && (ir357x_read(0xfd) == 'R') && + ((ir357x_read(0x0a) & 0xe) == 0)) + return 3571; + + /* IR3570A on Link Proto 0/1 and Link DVT */ + if ((ir357x_read(0x92) == 'C') && (ir357x_read(0xcd) == 0x24)) + return 3570; + + /* Unknown and unsupported chip */ + return -1; +} + +struct ir_setting *ir357x_get_settings(void) +{ + int version = ir357x_get_version(); + + if (version == 3570) + return ir3570_settings; + else if (version == 3571) + return ir3571_settings; + else + return NULL; +} + +static void ir357x_prog(void) +{ + struct ir_setting *settings = ir357x_get_settings(); + + if (settings) { + for (; settings->reg; settings++) + ir357x_write(settings->reg, settings->value); + } else { + CPRINTF("[%T IR%d chip unsupported. Skip writing settings!\n", + ir357x_get_version()); + return; + } + + CPRINTF("[%T IR%d registers UPDATED]\n", ir357x_get_version()); +} + +static void ir357x_dump(void) +{ + int i; + + for (i = 0; i < 256; i++) { + if (!(i & 0xf)) { + ccprintf("\n%02x: ", i); + cflush(); + } + ccprintf("%02x ", ir357x_read(i)); + } + ccprintf("\n"); +} + +static int ir357x_check(void) +{ + uint8_t val; + int diff = 0; + struct ir_setting *settings = ir357x_get_settings(); + + if (!settings) { + ccprintf("no setting for chip IR%d !\n", ir357x_get_version()); + return 1; + } + + for (; settings->reg; settings++) { + val = ir357x_read(settings->reg); + if (val != settings->value) { + ccprintf("DIFF reg 0x%02x %02x->%02x\n", + settings->reg, settings->value, val); + cflush(); + diff++; + } + } + return !!diff; +} + +static int command_ir357x(int argc, char **argv) +{ + int reg, val; + char *rem; + + if (1 == argc) { /* dump all registers */ + ir357x_dump(); + return EC_SUCCESS; + } else if (2 == argc) { + if (!strcasecmp(argv[1], "check")) { + ir357x_check(); + } else { /* read one register */ + reg = strtoi(argv[1], &rem, 16); + if (*rem) { + ccprintf("Invalid register: %s\n", argv[1]); + return EC_ERROR_INVAL; + } + ccprintf("reg 0x%02x = 0x%02x\n", reg, + ir357x_read(reg)); + } + return EC_SUCCESS; + } else if (3 == argc) { /* write one register */ + reg = strtoi(argv[1], &rem, 16); + if (*rem) { + ccprintf("Invalid register: %s\n", argv[1]); + return EC_ERROR_INVAL; + } + val = strtoi(argv[2], &rem, 16); + if (*rem) { + ccprintf("Invalid value: %s\n", argv[2]); + return EC_ERROR_INVAL; + } + ir357x_write(reg, val); + return EC_SUCCESS; + } + + return EC_ERROR_INVAL; +} +DECLARE_CONSOLE_COMMAND(ir357x, command_ir357x, + "[check|write]", + "IR357x core regulator control", + NULL); + +static void ir357x_hot_settings(void) +{ + /* dynamically apply settings to workaround issue */ + ir357x_prog(); +} +DECLARE_HOOK(HOOK_CHIPSET_RESUME, ir357x_hot_settings, HOOK_PRIO_DEFAULT); |