/* * L3 code * * Copyright (C) 2008, Christian Pellegrin * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * * based on: * * L3 bus algorithm module. * * Copyright (C) 2001 Russell King, All Rights Reserved. * * */ #include #include #include #include #include #include /* * Send one byte of data to the chip. Data is latched into the chip on * the rising edge of the clock. */ static void sendbyte(struct l3_pins *adap, unsigned int byte) { int i; for (i = 0; i < 8; i++) { adap->setclk(adap, 0); udelay(adap->data_hold); adap->setdat(adap, byte & 1); udelay(adap->data_setup); adap->setclk(adap, 1); udelay(adap->clock_high); byte >>= 1; } } /* * Send a set of bytes to the chip. We need to pulse the MODE line * between each byte, but never at the start nor at the end of the * transfer. */ static void sendbytes(struct l3_pins *adap, const u8 *buf, int len) { int i; for (i = 0; i < len; i++) { if (i) { udelay(adap->mode_hold); adap->setmode(adap, 0); udelay(adap->mode); } adap->setmode(adap, 1); udelay(adap->mode_setup); sendbyte(adap, buf[i]); } } int l3_write(struct l3_pins *adap, u8 addr, u8 *data, int len) { adap->setclk(adap, 1); adap->setdat(adap, 1); adap->setmode(adap, 1); udelay(adap->mode); adap->setmode(adap, 0); udelay(adap->mode_setup); sendbyte(adap, addr); udelay(adap->mode_hold); sendbytes(adap, data, len); adap->setclk(adap, 1); adap->setdat(adap, 1); adap->setmode(adap, 0); return len; } EXPORT_SYMBOL_GPL(l3_write); static void l3_set_clk(struct l3_pins *adap, int val) { gpio_set_value(adap->gpio_clk, val); } static void l3_set_data(struct l3_pins *adap, int val) { gpio_set_value(adap->gpio_data, val); } static void l3_set_mode(struct l3_pins *adap, int val) { gpio_set_value(adap->gpio_mode, val); } int l3_set_gpio_ops(struct device *dev, struct l3_pins *adap) { int ret; if (!adap->use_gpios) return -EINVAL; ret = devm_gpio_request_one(dev, adap->gpio_data, GPIOF_OUT_INIT_LOW, "l3_data"); if (ret < 0) return ret; adap->setdat = l3_set_data; ret = devm_gpio_request_one(dev, adap->gpio_clk, GPIOF_OUT_INIT_LOW, "l3_clk"); if (ret < 0) return ret; adap->setclk = l3_set_clk; ret = devm_gpio_request_one(dev, adap->gpio_mode, GPIOF_OUT_INIT_LOW, "l3_mode"); if (ret < 0) return ret; adap->setmode = l3_set_mode; return 0; } EXPORT_SYMBOL_GPL(l3_set_gpio_ops); MODULE_DESCRIPTION("L3 bit-banging driver"); MODULE_AUTHOR("Christian Pellegrin "); MODULE_LICENSE("GPL"); alue='search'/>
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authorRoger Shimizu <rogershimizu@gmail.com>2017-01-30 20:07:29 +0900
committerGregory CLEMENT <gregory.clement@free-electrons.com>2017-01-31 12:19:32 +0100
commit81917bad86a66f2bdcb12b4c10ab1bf333ed25ec (patch)
tree3d56cb771fc5f0a37412e62f99aacc6d21a646c0 /tools/perf/scripts/perl
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
ARM: dts: orion5x-lschl: Fix model name
Model name should be consistent with legacy device file, so that user can migrate their system from legacy device support to device-tree safely. Legacy device file is currently removed, but it can be found on 4.8 or previous version of linux: arch/arm/mach-orion5x/ls-chl-setup.c Fixes: f94f268979a2 ("ARM: dts: orion5x: convert ls-chl to FDT") Cc: Ashley Hughes <ashley.hughes@blueyonder.co.uk> Signed-off-by: Roger Shimizu <rogershimizu@gmail.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Diffstat (limited to 'tools/perf/scripts/perl')