diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2014-09-18 12:35:09 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-03-24 15:27:29 +0100 |
| commit | 51de5a8eda6b01e8e36d459cce7eda5be0911d89 (patch) | |
| tree | 1869f7541420bedcaa8ffc01ae7ced4a5fdc5a95 /src/soc/rockchip/rk3288/i2c.c | |
| parent | 7a757c942e74743ac5781ce03db671747b6f542b (diff) | |
| download | coreboot-51de5a8eda6b01e8e36d459cce7eda5be0911d89.tar.xz | |
rk3288: sync i2c driver with depthcharge
this change syncs the i2c driver with the one in depthcharge.
BUG=None
TEST=Booted Veyron Pinky
BRANCH=None
Change-Id: Ic9c7006770bba50fd412e0bcefc52f879b7195ec
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Commit-Id: 95ca6c88061062c0de95a8dd3567a71a372771b0
Original-Change-Id: I0d0fdefa58c5b4cc5c991be40796a800ccf074a5
Original-Reviewed-on: https://chromium-review.googlesource.com/218873
Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/8872
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/soc/rockchip/rk3288/i2c.c')
| -rw-r--r-- | src/soc/rockchip/rk3288/i2c.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/soc/rockchip/rk3288/i2c.c b/src/soc/rockchip/rk3288/i2c.c index dab0178092..9348b6cf89 100644 --- a/src/soc/rockchip/rk3288/i2c.c +++ b/src/soc/rockchip/rk3288/i2c.c @@ -33,7 +33,7 @@ #define RETRY_COUNT 3 /* 100000us = 100ms */ #define I2C_TIMEOUT_US 100000 -#define I2C_BUS_MAX 6 +#define I2C_BUS_MAX 6 #define I2C_NOACK 2 #define I2C_TIMEOUT 3 @@ -148,7 +148,7 @@ static int i2c_read(struct rk3288_i2c_regs *reg_addr, struct i2c_seg segment) writel(I2C_8BIT | segment.chip << 1 | 1, ®_addr->i2c_mrxaddr); writel(0, ®_addr->i2c_mrxraddr); - con = I2C_MODE_TRX | I2C_EN; + con = I2C_MODE_TRX | I2C_EN | I2C_ACT2NAK; while (bytes_remaining) { bytes_transfered = MIN(bytes_remaining, 32); bytes_remaining -= bytes_transfered; @@ -175,7 +175,7 @@ static int i2c_read(struct rk3288_i2c_regs *reg_addr, struct i2c_seg segment) printk(BIOS_ERR, "I2C Read::Recv Data Timeout\n"); writel(0, ®_addr->i2c_mrxcnt); writel(0, ®_addr->i2c_con); - return I2C_TIMEOUT; + return I2C_TIMEOUT; } for (i = 0; i < words_transfered; i++) { @@ -187,7 +187,7 @@ static int i2c_read(struct rk3288_i2c_regs *reg_addr, struct i2c_seg segment) *data++ = (rxdata >> (j * 8)) & 0xff; } } - con = I2C_MODE_RX | I2C_EN; + con = I2C_MODE_RX | I2C_EN | I2C_ACT2NAK; } return res; } @@ -221,7 +221,7 @@ static int i2c_write(struct rk3288_i2c_regs *reg_addr, struct i2c_seg segment) } writel(I2C_CLEANI, ®_addr->i2c_ipd); - writel(I2C_EN | I2C_MODE_TX, ®_addr->i2c_con); + writel(I2C_EN | I2C_MODE_TX | I2C_ACT2NAK, ®_addr->i2c_con); writel(bytes_transfered, ®_addr->i2c_mtxcnt); timeout = I2C_TIMEOUT_US; @@ -240,7 +240,7 @@ static int i2c_write(struct rk3288_i2c_regs *reg_addr, struct i2c_seg segment) printk(BIOS_ERR, "I2C Write::Send Data Timeout\n"); writel(0, ®_addr->i2c_mtxcnt); writel(0, ®_addr->i2c_con); - return I2C_TIMEOUT; + return I2C_TIMEOUT; } bytes_remaining -= bytes_transfered; @@ -266,7 +266,7 @@ int platform_i2c_transfer(unsigned bus, struct i2c_seg *segments, int seg_count) int i; int res = 0; struct rk3288_i2c_regs *regs = i2c_bus[bus]; - struct i2c_seg *seg = segments; + struct i2c_seg *seg = segments; for (i = 0; i < seg_count; i++, seg++) { res = i2c_do_xfer(regs, *seg); |