Re: [PATCH 4/6] drm/i2c: tda998x: convert to bridge driver

From: kbuild test robot
Date: Sat Jul 07 2018 - 03:09:23 EST

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In reply to: kbuild test robot: "Re: [PATCH 4/6] drm/i2c: tda998x: convert to bridge driver"
Next in thread: Russell King: "[PATCH 6/6] drm/i2c: tda998x: cleanup from previous changes"
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Hi Russell,

I love your patch! Yet something to improve:

[auto build test ERROR on arm/drm-tda998x-devel]
[cannot apply to v4.18-rc3 next-20180706]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Russell-King/drm-i2c-tda998x-find-the-drm_device-via-the-drm_connector/20180707-030507
base: git://git.armlinux.org.uk/~rmk/linux-arm.git drm-tda998x-devel
config: i386-randconfig-x018-201826 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

drivers/gpu/drm/i2c/tda998x_drv.c: In function 'tda998x_bridge_disable':
drivers/gpu/drm/i2c/tda998x_drv.c:1336:7: error: 'priv' undeclared (first use in this function); did you mean 'pid'?
if (!priv->is_on) {
^~~~
pid
drivers/gpu/drm/i2c/tda998x_drv.c:1336:7: note: each undeclared identifier is reported only once for each function it appears in
drivers/gpu/drm/i2c/tda998x_drv.c: In function 'tda998x_create':
>> drivers/gpu/drm/i2c/tda998x_drv.c:1827:14: error: 'struct drm_bridge' has no member named 'of_node'
priv->bridge.of_node = dev->of_node;
^
drivers/gpu/drm/i2c/tda998x_drv.c:1827:25: error: 'dev' undeclared (first use in this function); did you mean 'cdev'?
priv->bridge.of_node = dev->of_node;
^~~
cdev
drivers/gpu/drm/i2c/tda998x_drv.c: In function 'tda998x_bind':
drivers/gpu/drm/i2c/tda998x_drv.c:1908:1: warning: label 'err_encoder' defined but not used [-Wunused-label]
err_encoder:
^~~~~~~~~~~

vim +1827 drivers/gpu/drm/i2c/tda998x_drv.c

1650
1651 static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
1652 {
1653 struct device_node *np = client->dev.of_node;
1654 struct i2c_board_info cec_info;
1655 u32 video;
1656 int rev_lo, rev_hi, ret;
1657
1658 mutex_init(&priv->mutex); /* protect the page access */
1659 mutex_init(&priv->audio_mutex); /* protect access from audio thread */
1660 mutex_init(&priv->edid_mutex);
1661 INIT_LIST_HEAD(&priv->bridge.list);
1662 init_waitqueue_head(&priv->edid_delay_waitq);
1663 timer_setup(&priv->edid_delay_timer, tda998x_edid_delay_done, 0);
1664 INIT_WORK(&priv->detect_work, tda998x_detect_work);
1665
1666 priv->vip_cntrl_0 = VIP_CNTRL_0_SWAP_A(2) | VIP_CNTRL_0_SWAP_B(3);
1667 priv->vip_cntrl_1 = VIP_CNTRL_1_SWAP_C(0) | VIP_CNTRL_1_SWAP_D(1);
1668 priv->vip_cntrl_2 = VIP_CNTRL_2_SWAP_E(4) | VIP_CNTRL_2_SWAP_F(5);
1669
1670 /* CEC I2C address bound to TDA998x I2C addr by configuration pins */
1671 priv->cec_addr = 0x34 + (client->addr & 0x03);
1672 priv->current_page = 0xff;
1673 priv->hdmi = client;
1674
1675 /* wake up the device: */
1676 cec_write(priv, REG_CEC_ENAMODS,
1677 CEC_ENAMODS_EN_RXSENS | CEC_ENAMODS_EN_HDMI);
1678
1679 tda998x_reset(priv);
1680
1681 /* read version: */
1682 rev_lo = reg_read(priv, REG_VERSION_LSB);
1683 if (rev_lo < 0) {
1684 dev_err(&client->dev, "failed to read version: %d\n", rev_lo);
1685 return rev_lo;
1686 }
1687
1688 rev_hi = reg_read(priv, REG_VERSION_MSB);
1689 if (rev_hi < 0) {
1690 dev_err(&client->dev, "failed to read version: %d\n", rev_hi);
1691 return rev_hi;
1692 }
1693
1694 priv->rev = rev_lo | rev_hi << 8;
1695
1696 /* mask off feature bits: */
1697 priv->rev &= ~0x30; /* not-hdcp and not-scalar bit */
1698
1699 switch (priv->rev) {
1700 case TDA9989N2:
1701 dev_info(&client->dev, "found TDA9989 n2");
1702 break;
1703 case TDA19989:
1704 dev_info(&client->dev, "found TDA19989");
1705 break;
1706 case TDA19989N2:
1707 dev_info(&client->dev, "found TDA19989 n2");
1708 break;
1709 case TDA19988:
1710 dev_info(&client->dev, "found TDA19988");
1711 break;
1712 default:
1713 dev_err(&client->dev, "found unsupported device: %04x\n",
1714 priv->rev);
1715 return -ENXIO;
1716 }
1717
1718 /* after reset, enable DDC: */
1719 reg_write(priv, REG_DDC_DISABLE, 0x00);
1720
1721 /* set clock on DDC channel: */
1722 reg_write(priv, REG_TX3, 39);
1723
1724 /* if necessary, disable multi-master: */
1725 if (priv->rev == TDA19989)
1726 reg_set(priv, REG_I2C_MASTER, I2C_MASTER_DIS_MM);
1727
1728 cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
1729 CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
1730
1731 /* ensure interrupts are disabled */
1732 cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
1733
1734 /* clear pending interrupts */
1735 cec_read(priv, REG_CEC_RXSHPDINT);
1736 reg_read(priv, REG_INT_FLAGS_0);
1737 reg_read(priv, REG_INT_FLAGS_1);
1738 reg_read(priv, REG_INT_FLAGS_2);
1739
1740 /* initialize the optional IRQ */
1741 if (client->irq) {
1742 unsigned long irq_flags;
1743
1744 /* init read EDID waitqueue and HDP work */
1745 init_waitqueue_head(&priv->wq_edid);
1746
1747 irq_flags =
1748 irqd_get_trigger_type(irq_get_irq_data(client->irq));
1749
1750 priv->cec_glue.irq_flags = irq_flags;
1751
1752 irq_flags |= IRQF_SHARED | IRQF_ONESHOT;
1753 ret = request_threaded_irq(client->irq, NULL,
1754 tda998x_irq_thread, irq_flags,
1755 "tda998x", priv);
1756 if (ret) {
1757 dev_err(&client->dev,
1758 "failed to request IRQ#%u: %d\n",
1759 client->irq, ret);
1760 goto err_irq;
1761 }
1762
1763 /* enable HPD irq */
1764 cec_write(priv, REG_CEC_RXSHPDINTENA, CEC_RXSHPDLEV_HPD);
1765 }
1766
1767 priv->cec_notify = cec_notifier_get(&client->dev);
1768 if (!priv->cec_notify) {
1769 ret = -ENOMEM;
1770 goto fail;
1771 }
1772
1773 priv->cec_glue.parent = &client->dev;
1774 priv->cec_glue.data = priv;
1775 priv->cec_glue.init = tda998x_cec_hook_init;
1776 priv->cec_glue.exit = tda998x_cec_hook_exit;
1777 priv->cec_glue.open = tda998x_cec_hook_open;
1778 priv->cec_glue.release = tda998x_cec_hook_release;
1779
1780 /*
1781 * Some TDA998x are actually two I2C devices merged onto one piece
1782 * of silicon: TDA9989 and TDA19989 combine the HDMI transmitter
1783 * with a slightly modified TDA9950 CEC device. The CEC device
1784 * is at the TDA9950 address, with the address pins strapped across
1785 * to the TDA998x address pins. Hence, it always has the same
1786 * offset.
1787 */
1788 memset(&cec_info, 0, sizeof(cec_info));
1789 strlcpy(cec_info.type, "tda9950", sizeof(cec_info.type));
1790 cec_info.addr = priv->cec_addr;
1791 cec_info.platform_data = &priv->cec_glue;
1792 cec_info.irq = client->irq;
1793
1794 priv->cec = i2c_new_device(client->adapter, &cec_info);
1795 if (!priv->cec) {
1796 ret = -ENODEV;
1797 goto fail;
1798 }
1799
1800 /* enable EDID read irq: */
1801 reg_set(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
1802
1803 if (np) {
1804 /* get the device tree parameters */
1805 ret = of_property_read_u32(np, "video-ports", &video);
1806 if (ret == 0) {
1807 priv->vip_cntrl_0 = video >> 16;
1808 priv->vip_cntrl_1 = video >> 8;
1809 priv->vip_cntrl_2 = video;
1810 }
1811
1812 ret = tda998x_get_audio_ports(priv, np);
1813 if (ret)
1814 goto fail;
1815
1816 if (priv->audio_port[0].format != AFMT_UNUSED)
1817 tda998x_audio_codec_init(priv, &client->dev);
1818 } else {
1819 struct tda998x_encoder_params *params;
1820
1821 params = client->dev.platform_data;
1822 if (params)
1823 tda998x_set_config(priv, params);
1824 }
1825
1826 priv->bridge.funcs = &tda998x_bridge_funcs;
> 1827 priv->bridge.of_node = dev->of_node;
1828
1829 drm_bridge_add(&priv->bridge);
1830
1831 return 0;
1832
1833 fail:
1834 tda998x_destroy(priv);
1835 err_irq:
1836 return ret;
1837 }
1838

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Next message: Peter Vernia: "[PATCH 3/4] staging: mt7621-pci: Add spaces after commas in pci-mt7621.c"
Previous message: syzbot: "general protection fault in cgroup_reconfigure"
In reply to: kbuild test robot: "Re: [PATCH 4/6] drm/i2c: tda998x: convert to bridge driver"
Next in thread: Russell King: "[PATCH 6/6] drm/i2c: tda998x: cleanup from previous changes"
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