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Date: Tue, 26 Jan 2016 11:22:24 +0300
From: Dmitriy Baranov <dbaranov@....rtsoft.ru>
To: unlisted-recipients:; (no To-header on input)
Cc: wsa@...-dreams.de, linux-i2c@...r.kernel.org,
linux-kernel@...r.kernel.org, Maxim Syrchin <syrchin@....rtsoft.ru>
Subject: Re: [PATCH] i2c: imx: add slave support
Thank you for testing our patch.
Due to using the generic slave interface, It should be enabled in the
config file.
Please add the following in the config file:
CONFIG_I2C_SLAVE=y
On 25.01.2016 21:09, kbuild test robot wrote:
> Hi Dmitriy,
>
> [auto build test ERROR on wsa/i2c/for-next]
> [also build test ERROR on v4.5-rc1 next-20160125]
> [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
>
> url: https://github.com/0day-ci/linux/commits/Dmitriy-Baranov/i2c-imx-add-slave-support/20160125-225538
> base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux i2c/for-next
> config: arm-imx_v6_v7_defconfig (attached as .config)
> reproduce:
> wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # save the attached .config to linux build tree
> make.cross ARCH=arm
>
> All error/warnings (new ones prefixed by >>):
>
> drivers/i2c/busses/i2c-imx.c: In function 'i2c_imx_slave_threadfn':
>>> drivers/i2c/busses/i2c-imx.c:696:6: error: implicit declaration of function 'i2c_slave_event' [-Werror=implicit-function-declaration]
> i2c_slave_event(i2c_imx->slave,
> ^
>>> drivers/i2c/busses/i2c-imx.c:697:7: error: 'I2C_SLAVE_READ_REQUESTED' undeclared (first use in this function)
> I2C_SLAVE_READ_REQUESTED, &data);
> ^
> drivers/i2c/busses/i2c-imx.c:697:7: note: each undeclared identifier is reported only once for each function it appears in
>>> drivers/i2c/busses/i2c-imx.c:706:7: error: 'I2C_SLAVE_WRITE_REQUESTED' undeclared (first use in this function)
> I2C_SLAVE_WRITE_REQUESTED, &data);
> ^
>>> drivers/i2c/busses/i2c-imx.c:719:8: error: 'I2C_SLAVE_READ_PROCESSED' undeclared (first use in this function)
> I2C_SLAVE_READ_PROCESSED, &data);
> ^
>>> drivers/i2c/busses/i2c-imx.c:744:7: error: 'I2C_SLAVE_WRITE_RECEIVED' undeclared (first use in this function)
> I2C_SLAVE_WRITE_RECEIVED, &data);
> ^
>>> drivers/i2c/busses/i2c-imx.c:755:37: error: 'I2C_SLAVE_STOP' undeclared (first use in this function)
> i2c_slave_event(i2c_imx->slave, I2C_SLAVE_STOP, &data);
> ^
> drivers/i2c/busses/i2c-imx.c: At top level:
>>> drivers/i2c/busses/i2c-imx.c:1283:2: error: unknown field 'reg_slave' specified in initializer
> .reg_slave = i2c_imx_reg_slave,
> ^
>>> drivers/i2c/busses/i2c-imx.c:1283:2: warning: excess elements in struct initializer
> drivers/i2c/busses/i2c-imx.c:1283:2: warning: (near initialization for 'i2c_imx_algo')
>>> drivers/i2c/busses/i2c-imx.c:1284:2: error: unknown field 'unreg_slave' specified in initializer
> .unreg_slave = i2c_imx_unreg_slave,
> ^
> drivers/i2c/busses/i2c-imx.c:1284:2: warning: excess elements in struct initializer
> drivers/i2c/busses/i2c-imx.c:1284:2: warning: (near initialization for 'i2c_imx_algo')
> cc1: some warnings being treated as errors
>
> vim +/i2c_slave_event +696 drivers/i2c/busses/i2c-imx.c
>
> 690 status = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);
> 691 ctl = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2CR);
> 692
> 693 if (status & I2SR_IAAS) {
> 694 if (status & I2SR_SRW) {
> 695 /* master wants to read from us */
> > 696 i2c_slave_event(i2c_imx->slave,
> > 697 I2C_SLAVE_READ_REQUESTED, &data);
> 698 ctl |= I2CR_MTX;
> 699 imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);
> 700
> 701 /*send data */
> 702 imx_i2c_write_reg(data, i2c_imx, IMX_I2C_I2DR);
> 703 } else {
> 704 dev_dbg(&i2c_imx->adapter.dev, "write requested");
> 705 i2c_slave_event(i2c_imx->slave,
> > 706 I2C_SLAVE_WRITE_REQUESTED, &data);
> 707 /*slave receive */
> 708 ctl &= ~I2CR_MTX;
> 709 imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);
> 710
> 711 /*dummy read */
> 712 data = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);
> 713 }
> 714 } else {
> 715 /* slave send */
> 716 if (ctl & I2CR_MTX) {
> 717 if (!(status & I2SR_RXAK)) { /*ACK received */
> 718 i2c_slave_event(i2c_imx->slave,
> > 719 I2C_SLAVE_READ_PROCESSED, &data);
> 720 ctl |= I2CR_MTX;
> 721 imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);
> 722 /*send data */
> 723 imx_i2c_write_reg(data, i2c_imx, IMX_I2C_I2DR);
> 724 } else {
> 725 /*no ACK. */
> 726 /*dummy read */
> 727 dev_dbg(&i2c_imx->adapter.dev, "read requested");
> 728 i2c_slave_event(i2c_imx->slave,
> 729 I2C_SLAVE_READ_REQUESTED, &data);
> 730
> 731 ctl &= ~I2CR_MTX;
> 732 imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);
> 733 imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);
> 734 }
> 735 } else { /*read */
> 736 ctl &= ~I2CR_MTX;
> 737 imx_i2c_write_reg(ctl, i2c_imx, IMX_I2C_I2CR);
> 738
> 739 /*read */
> 740 data = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2DR);
> 741 dev_dbg(&i2c_imx->adapter.dev, "received %x",
> 742 (unsigned int) data);
> 743 i2c_slave_event(i2c_imx->slave,
> > 744 I2C_SLAVE_WRITE_RECEIVED, &data);
> 745 }
> 746 }
> 747 }
> 748
> 749 if (atomic_read(&i2c_imx->slave_state) == I2C_IMX_SLAVE_POLLING) {
> 750 udelay(50);
> 751 status = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR);
> 752
> 753 if ((status & I2SR_IBB) == 0) {
> 754 pr_debug("end of package");
> > 755 i2c_slave_event(i2c_imx->slave, I2C_SLAVE_STOP, &data);
> 756 atomic_set(&i2c_imx->slave_state, I2C_IMX_SLAVE_IDLE);
> 757 timeout = HZ;
> 758 }
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
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