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 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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