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path: root/drivers/i2c/mvtwsi.c
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* sunxi: Add i2c supportHans de Goede2014-07-18-0/+18
| | | | | | | | | | | | | Add support for the i2c controller found on all Allwinner sunxi SoCs, this is the same controller as found on the Marvell orion5x and kirkwood SoC families, with a slightly different register layout, so this patch uses the existing mvtwsi code. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-By: Prafulla Wadaskar <prafulla@marvell.com> Acked-by: Heiko Schocher <hs@denx.de> [ ijc -- updated u-boot-spl-fel.lds ]
* mvtwsi: convert to CONFIG_SYS_I2C frameworkHans de Goede2014-07-16-38/+32
| | | | | | | | | | | | Note this has only been tested on Allwinner sunxi devices (support for which gets introduced by a later patch). The kirkwood changes have been compile tested using the wireless_space board config, the orion5x changes have been compile tested using the edminiv2 board config. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Heiko Schocher <hs@denx.de>
* mvtwsi: Remove unnecessary twsi_baud_rate and twsi_slave_address globalsHans de Goede2014-05-14-19/+4
| | | | | | | | | These are used only once, so their is no need to have them global. This also stops mvtwsi from using any bss vars making it easier to use before dram init (to talk to the pmic to set the dram voltage). Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* mvtwsi: Fix clock programmingHans de Goede2014-05-14-5/+2
| | | | | | | | | | | | | | | | The TWSI_FREQUENCY macro was wrong in 2 ways: 1) It was casting the result of the calculations to an u8, while i2c clk rates are often >= 100Khz which won't fit in a u8, drop the cast. 2) It had an extra factor of 2 in the divider which neither the datasheet nor the Linux driver have. The comment for the default value was wrongly saying that m lives in bits 4-7, while in reality it is in bits 3-6, as can be seen from the correct shift by 3 used in i2c_init(). While at it remove the unused twsi_actual_speed variable. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* Replace obsolete e-mail addressAlbert ARIBAUD2011-04-27-1/+1
| | | | Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* i2c: rewrite mvtwsi, support orion5x and kirkwoodAlbert Aribaud2010-08-30-409/+341
| | | | | | | | | This rewrite of the mvtwsi driver is 25% smaller and much faster and simpler than the previous code. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr> Acked-by: Prafulla Wadaskar<prafulla@marvell.com> Acked-by: Heiko Schocher<hs@denx.de>
* i2c: rename kirkwood_i2c to mvtwsiAlbert Aribaud2010-08-30-0/+496
This driver is not kirkwood-specific and can also be used e.g. by orion5x. Rename to a SoC-neutral name. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr> Acked-by: Prafulla Wadaskar<prafulla@marvell.com> Acked-by: Heiko Schocher<hs@denx.de>
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