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authorAnatol Pomazau <anatol@google.com>2015-02-04 10:09:27 -0800
committerPatrick Georgi <pgeorgi@google.com>2015-04-22 08:57:36 +0200
commitd9af30bec1c5d47f51dcdfbe540ad2fcebb2fdc4 (patch)
tree6865280c0654471d1514d3161911cb5cc3830295 /src/southbridge/intel/i82801dx/chip.h
parent985589592753b380c54300b38d6d3ec259c4a240 (diff)
broadcom/cygnus: Implement I2C driver
BUG=chrome-os-partner:35810 BRANCH=purin TEST=Enable I2C1, reset devboard codec, read a register. Here is the code that demonstrates how I2C works: i2c_init(1, 100*KHz); mdelay(50); int rc = i2c_writeb(1, 0x18, 1, 0x80); // reset codec printk(BIOS_INFO, "I2C reset rc=%d\n", rc); mdelay(50); uint8_t data = 0; rc = i2c_readb(1, 0x18, 43, &data); printk(BIOS_INFO, "I2C read rc=%d data=%x\n", rc, data); // data == 0x80 Change-Id: I0d202f8b0375b5ccd9f71b23fb0cadd5a70ae779 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 6bbe9afe3dccd104f39c2c286d3765a28ea20141 Original-Signed-off-by: Anatol Pomazau <anatol@google.com> Original-Reviewed-on: https://chrome-internal-review.googlesource.com/195706 Original-Reviewed-by: Daisuke Nojiri <dnojiri@google.com> Original-Reviewed-by: Anatol Pomazau <anatol@google.com> Original-Commit-Queue: Anatol Pomazau <anatol@google.com> Original-Tested-by: Anatol Pomazau <anatol@google.com> Original-Change-Id: I178acef9de18fa854983294edcd2c05886795e2a Original-Reviewed-on: https://chromium-review.googlesource.com/263496 Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org> Original-Trybot-Ready: Daisuke Nojiri <dnojiri@chromium.org> Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-on: http://review.coreboot.org/9908 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/southbridge/intel/i82801dx/chip.h')
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