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Date: Mon, 18 Jul 2022 02:15:19 +0800
From: kernel test robot <lkp@...el.com>
To: Maxime Ripard <maxime@...no.tech>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: [kraxel:drm-qemu-next 35/70] drivers/gpu/drm/vc4/vc4_dsi.c:1675:23:
error: implicit declaration of function 'drmm_of_get_bridge'; did you mean
'devm_drm_of_get_bridge'?
tree: git://git.kraxel.org/linux drm-qemu-next
head: 887ddf3251928dc39bfc58c5c62083d38a633c14
commit: 2a87d48c3342ede66b15649bcbbaf999ccc9a83a [35/70] drm/vc4: dsi: Switch to drmm_of_get_bridge
config: mips-randconfig-r025-20220717 (https://download.01.org/0day-ci/archive/20220718/202207180223.VAvnHfvU-lkp@intel.com/config)
compiler: mipsel-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git remote add kraxel git://git.kraxel.org/linux
git fetch --no-tags kraxel drm-qemu-next
git checkout 2a87d48c3342ede66b15649bcbbaf999ccc9a83a
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/vc4/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
drivers/gpu/drm/vc4/vc4_dsi.c: In function 'vc4_dsi_bind':
>> drivers/gpu/drm/vc4/vc4_dsi.c:1675:23: error: implicit declaration of function 'drmm_of_get_bridge'; did you mean 'devm_drm_of_get_bridge'? [-Werror=implicit-function-declaration]
1675 | dsi->bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
| ^~~~~~~~~~~~~~~~~~
| devm_drm_of_get_bridge
>> drivers/gpu/drm/vc4/vc4_dsi.c:1675:21: warning: assignment to 'struct drm_bridge *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
1675 | dsi->bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
| ^
cc1: some warnings being treated as errors
vim +1675 drivers/gpu/drm/vc4/vc4_dsi.c
1558
1559 static int vc4_dsi_bind(struct device *dev, struct device *master, void *data)
1560 {
1561 struct platform_device *pdev = to_platform_device(dev);
1562 struct drm_device *drm = dev_get_drvdata(master);
1563 struct vc4_dsi *dsi = dev_get_drvdata(dev);
1564 struct drm_encoder *encoder = &dsi->encoder.base;
1565 int ret;
1566
1567 dsi->variant = of_device_get_match_data(dev);
1568
1569 INIT_LIST_HEAD(&dsi->bridge_chain);
1570 dsi->encoder.type = dsi->variant->port ?
1571 VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
1572
1573 dsi->regs = vc4_ioremap_regs(pdev, 0);
1574 if (IS_ERR(dsi->regs))
1575 return PTR_ERR(dsi->regs);
1576
1577 dsi->regset.base = dsi->regs;
1578 dsi->regset.regs = dsi->variant->regs;
1579 dsi->regset.nregs = dsi->variant->nregs;
1580
1581 if (DSI_PORT_READ(ID) != DSI_ID_VALUE) {
1582 dev_err(dev, "Port returned 0x%08x for ID instead of 0x%08x\n",
1583 DSI_PORT_READ(ID), DSI_ID_VALUE);
1584 return -ENODEV;
1585 }
1586
1587 /* DSI1 on BCM2835/6/7 has a broken AXI slave that doesn't respond to
1588 * writes from the ARM. It does handle writes from the DMA engine,
1589 * so set up a channel for talking to it.
1590 */
1591 if (dsi->variant->broken_axi_workaround) {
1592 dma_cap_mask_t dma_mask;
1593
1594 dsi->reg_dma_mem = dma_alloc_coherent(dev, 4,
1595 &dsi->reg_dma_paddr,
1596 GFP_KERNEL);
1597 if (!dsi->reg_dma_mem) {
1598 DRM_ERROR("Failed to get DMA memory\n");
1599 return -ENOMEM;
1600 }
1601
1602 ret = devm_add_action_or_reset(dev, vc4_dsi_dma_mem_release, dsi);
1603 if (ret)
1604 return ret;
1605
1606 dma_cap_zero(dma_mask);
1607 dma_cap_set(DMA_MEMCPY, dma_mask);
1608
1609 dsi->reg_dma_chan = dma_request_chan_by_mask(&dma_mask);
1610 if (IS_ERR(dsi->reg_dma_chan)) {
1611 ret = PTR_ERR(dsi->reg_dma_chan);
1612 if (ret != -EPROBE_DEFER)
1613 DRM_ERROR("Failed to get DMA channel: %d\n",
1614 ret);
1615 return ret;
1616 }
1617
1618 ret = devm_add_action_or_reset(dev, vc4_dsi_dma_chan_release, dsi);
1619 if (ret)
1620 return ret;
1621
1622 /* Get the physical address of the device's registers. The
1623 * struct resource for the regs gives us the bus address
1624 * instead.
1625 */
1626 dsi->reg_paddr = be32_to_cpup(of_get_address(dev->of_node,
1627 0, NULL, NULL));
1628 }
1629
1630 init_completion(&dsi->xfer_completion);
1631 /* At startup enable error-reporting interrupts and nothing else. */
1632 DSI_PORT_WRITE(INT_EN, DSI1_INTERRUPTS_ALWAYS_ENABLED);
1633 /* Clear any existing interrupt state. */
1634 DSI_PORT_WRITE(INT_STAT, DSI_PORT_READ(INT_STAT));
1635
1636 if (dsi->reg_dma_mem)
1637 ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0),
1638 vc4_dsi_irq_defer_to_thread_handler,
1639 vc4_dsi_irq_handler,
1640 IRQF_ONESHOT,
1641 "vc4 dsi", dsi);
1642 else
1643 ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
1644 vc4_dsi_irq_handler, 0, "vc4 dsi", dsi);
1645 if (ret) {
1646 if (ret != -EPROBE_DEFER)
1647 dev_err(dev, "Failed to get interrupt: %d\n", ret);
1648 return ret;
1649 }
1650
1651 dsi->escape_clock = devm_clk_get(dev, "escape");
1652 if (IS_ERR(dsi->escape_clock)) {
1653 ret = PTR_ERR(dsi->escape_clock);
1654 if (ret != -EPROBE_DEFER)
1655 dev_err(dev, "Failed to get escape clock: %d\n", ret);
1656 return ret;
1657 }
1658
1659 dsi->pll_phy_clock = devm_clk_get(dev, "phy");
1660 if (IS_ERR(dsi->pll_phy_clock)) {
1661 ret = PTR_ERR(dsi->pll_phy_clock);
1662 if (ret != -EPROBE_DEFER)
1663 dev_err(dev, "Failed to get phy clock: %d\n", ret);
1664 return ret;
1665 }
1666
1667 dsi->pixel_clock = devm_clk_get(dev, "pixel");
1668 if (IS_ERR(dsi->pixel_clock)) {
1669 ret = PTR_ERR(dsi->pixel_clock);
1670 if (ret != -EPROBE_DEFER)
1671 dev_err(dev, "Failed to get pixel clock: %d\n", ret);
1672 return ret;
1673 }
1674
> 1675 dsi->bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
1676 if (IS_ERR(dsi->bridge))
1677 return PTR_ERR(dsi->bridge);
1678
1679 /* The esc clock rate is supposed to always be 100Mhz. */
1680 ret = clk_set_rate(dsi->escape_clock, 100 * 1000000);
1681 if (ret) {
1682 dev_err(dev, "Failed to set esc clock: %d\n", ret);
1683 return ret;
1684 }
1685
1686 ret = vc4_dsi_init_phy_clocks(dsi);
1687 if (ret)
1688 return ret;
1689
1690 ret = drmm_encoder_init(drm, encoder,
1691 NULL,
1692 DRM_MODE_ENCODER_DSI,
1693 NULL);
1694 if (ret)
1695 return ret;
1696
1697 drm_encoder_helper_add(encoder, &vc4_dsi_encoder_helper_funcs);
1698
1699 ret = drm_bridge_attach(encoder, dsi->bridge, NULL, 0);
1700 if (ret)
1701 return ret;
1702 /* Disable the atomic helper calls into the bridge. We
1703 * manually call the bridge pre_enable / enable / etc. calls
1704 * from our driver, since we need to sequence them within the
1705 * encoder's enable/disable paths.
1706 */
1707 list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain);
1708
1709 vc4_debugfs_add_regset32(drm, dsi->variant->debugfs_name, &dsi->regset);
1710
1711 pm_runtime_enable(dev);
1712
1713 return 0;
1714 }
1715
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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