Merge branch 'regmap-simple-bit-helpers'
Bartosz Golaszewski says: ==================== regmap: provide simple bitops and use them in a driver I noticed that oftentimes I use regmap_update_bits() for simple bit setting or clearing. In this case the fourth argument is superfluous as it's always 0 or equal to the mask argument. This series proposes to add simple bit operations for setting, clearing and testing specific bits with regmap. The second patch uses all three in a driver that got recently picked into the net-next tree. The patches obviously target different trees so - if you're ok with the change itself - I propose you pick the first one into your regmap tree for v5.8 and then I'll resend the second patch to add the first user for these macros for v5.9. v1 -> v2: - convert the new macros to static inline functions v2 -> v3: - drop unneeded ternary operator ==================== Signed-off-by: David S. Miller <davem@davemloft.net>alistair/sunxi64-5.8
commit
e85093618c
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@ -2936,6 +2936,28 @@ int regmap_update_bits_base(struct regmap *map, unsigned int reg,
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}
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EXPORT_SYMBOL_GPL(regmap_update_bits_base);
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/**
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* regmap_test_bits() - Check if all specified bits are set in a register.
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*
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* @map: Register map to operate on
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* @reg: Register to read from
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* @bits: Bits to test
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*
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* Returns -1 if the underlying regmap_read() fails, 0 if at least one of the
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* tested bits is not set and 1 if all tested bits are set.
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*/
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int regmap_test_bits(struct regmap *map, unsigned int reg, unsigned int bits)
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{
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unsigned int val, ret;
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ret = regmap_read(map, reg, &val);
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if (ret)
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return ret;
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return (val & bits) == bits;
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}
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EXPORT_SYMBOL_GPL(regmap_test_bits);
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void regmap_async_complete_cb(struct regmap_async *async, int ret)
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{
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struct regmap *map = async->map;
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@ -413,8 +413,8 @@ static void mtk_star_dma_unmap_tx(struct mtk_star_priv *priv,
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static void mtk_star_nic_disable_pd(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
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MTK_STAR_BIT_MAC_CFG_NIC_PD, 0);
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regmap_clear_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
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MTK_STAR_BIT_MAC_CFG_NIC_PD);
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}
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/* Unmask the three interrupts we care about, mask all others. */
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@ -434,41 +434,38 @@ static void mtk_star_intr_disable(struct mtk_star_priv *priv)
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static void mtk_star_intr_enable_tx(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_TNTC, 0);
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regmap_clear_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_TNTC);
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}
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static void mtk_star_intr_enable_rx(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_FNRC, 0);
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regmap_clear_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_FNRC);
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}
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static void mtk_star_intr_enable_stats(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_REG_INT_STS_MIB_CNT_TH, 0);
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regmap_clear_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_REG_INT_STS_MIB_CNT_TH);
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}
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static void mtk_star_intr_disable_tx(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_TNTC,
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MTK_STAR_BIT_INT_STS_TNTC);
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regmap_set_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_TNTC);
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}
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static void mtk_star_intr_disable_rx(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_FNRC,
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MTK_STAR_BIT_INT_STS_FNRC);
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regmap_set_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_BIT_INT_STS_FNRC);
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}
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static void mtk_star_intr_disable_stats(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_REG_INT_STS_MIB_CNT_TH,
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MTK_STAR_REG_INT_STS_MIB_CNT_TH);
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regmap_set_bits(priv->regs, MTK_STAR_REG_INT_MASK,
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MTK_STAR_REG_INT_STS_MIB_CNT_TH);
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}
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static unsigned int mtk_star_intr_read(struct mtk_star_priv *priv)
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@ -524,12 +521,10 @@ static void mtk_star_dma_init(struct mtk_star_priv *priv)
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static void mtk_star_dma_start(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
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MTK_STAR_BIT_TX_DMA_CTRL_START,
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MTK_STAR_BIT_TX_DMA_CTRL_START);
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regmap_update_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
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MTK_STAR_BIT_RX_DMA_CTRL_START,
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MTK_STAR_BIT_RX_DMA_CTRL_START);
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regmap_set_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
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MTK_STAR_BIT_TX_DMA_CTRL_START);
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regmap_set_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
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MTK_STAR_BIT_RX_DMA_CTRL_START);
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}
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static void mtk_star_dma_stop(struct mtk_star_priv *priv)
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@ -553,16 +548,14 @@ static void mtk_star_dma_disable(struct mtk_star_priv *priv)
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static void mtk_star_dma_resume_rx(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
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MTK_STAR_BIT_RX_DMA_CTRL_RESUME,
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MTK_STAR_BIT_RX_DMA_CTRL_RESUME);
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regmap_set_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
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MTK_STAR_BIT_RX_DMA_CTRL_RESUME);
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}
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static void mtk_star_dma_resume_tx(struct mtk_star_priv *priv)
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{
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regmap_update_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
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MTK_STAR_BIT_TX_DMA_CTRL_RESUME,
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MTK_STAR_BIT_TX_DMA_CTRL_RESUME);
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regmap_set_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
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MTK_STAR_BIT_TX_DMA_CTRL_RESUME);
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}
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static void mtk_star_set_mac_addr(struct net_device *ndev)
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@ -842,8 +835,8 @@ static int mtk_star_hash_wait_ok(struct mtk_star_priv *priv)
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return ret;
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/* Check the BIST_OK bit. */
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regmap_read(priv->regs, MTK_STAR_REG_HASH_CTRL, &val);
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if (!(val & MTK_STAR_BIT_HASH_CTRL_BIST_OK))
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if (!regmap_test_bits(priv->regs, MTK_STAR_REG_HASH_CTRL,
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MTK_STAR_BIT_HASH_CTRL_BIST_OK))
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return -EIO;
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return 0;
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@ -877,12 +870,10 @@ static int mtk_star_reset_hash_table(struct mtk_star_priv *priv)
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if (ret)
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return ret;
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regmap_update_bits(priv->regs, MTK_STAR_REG_HASH_CTRL,
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MTK_STAR_BIT_HASH_CTRL_BIST_EN,
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MTK_STAR_BIT_HASH_CTRL_BIST_EN);
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regmap_update_bits(priv->regs, MTK_STAR_REG_TEST1,
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MTK_STAR_BIT_TEST1_RST_HASH_MBIST,
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MTK_STAR_BIT_TEST1_RST_HASH_MBIST);
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regmap_set_bits(priv->regs, MTK_STAR_REG_HASH_CTRL,
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MTK_STAR_BIT_HASH_CTRL_BIST_EN);
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regmap_set_bits(priv->regs, MTK_STAR_REG_TEST1,
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MTK_STAR_BIT_TEST1_RST_HASH_MBIST);
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return mtk_star_hash_wait_ok(priv);
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}
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@ -1013,13 +1004,13 @@ static int mtk_star_enable(struct net_device *ndev)
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return ret;
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/* Setup the hashing algorithm */
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regmap_update_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
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MTK_STAR_BIT_ARL_CFG_HASH_ALG |
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MTK_STAR_BIT_ARL_CFG_MISC_MODE, 0);
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regmap_clear_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
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MTK_STAR_BIT_ARL_CFG_HASH_ALG |
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MTK_STAR_BIT_ARL_CFG_MISC_MODE);
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/* Don't strip VLAN tags */
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regmap_update_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
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MTK_STAR_BIT_MAC_CFG_VLAN_STRIP, 0);
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regmap_clear_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
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MTK_STAR_BIT_MAC_CFG_VLAN_STRIP);
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/* Setup DMA */
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mtk_star_dma_init(priv);
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int ret;
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if (ndev->flags & IFF_PROMISC) {
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regmap_update_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
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MTK_STAR_BIT_ARL_CFG_MISC_MODE,
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MTK_STAR_BIT_ARL_CFG_MISC_MODE);
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regmap_set_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
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MTK_STAR_BIT_ARL_CFG_MISC_MODE);
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} else if (netdev_mc_count(ndev) > MTK_STAR_HASHTABLE_MC_LIMIT ||
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ndev->flags & IFF_ALLMULTI) {
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for (i = 0; i < MTK_STAR_HASHTABLE_SIZE_MAX; i++) {
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@ -1111,6 +1111,21 @@ bool regmap_reg_in_ranges(unsigned int reg,
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const struct regmap_range *ranges,
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unsigned int nranges);
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static inline int regmap_set_bits(struct regmap *map,
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unsigned int reg, unsigned int bits)
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{
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return regmap_update_bits_base(map, reg, bits, bits,
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NULL, false, false);
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}
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static inline int regmap_clear_bits(struct regmap *map,
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unsigned int reg, unsigned int bits)
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{
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return regmap_update_bits_base(map, reg, bits, 0, NULL, false, false);
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}
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int regmap_test_bits(struct regmap *map, unsigned int reg, unsigned int bits);
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/**
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* struct reg_field - Description of an register field
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*
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return -EINVAL;
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}
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static inline int regmap_set_bits(struct regmap *map,
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unsigned int reg, unsigned int bits)
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{
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WARN_ONCE(1, "regmap API is disabled");
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return -EINVAL;
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}
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static inline int regmap_clear_bits(struct regmap *map,
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unsigned int reg, unsigned int bits)
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{
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WARN_ONCE(1, "regmap API is disabled");
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return -EINVAL;
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}
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static inline int regmap_test_bits(struct regmap *map,
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unsigned int reg, unsigned int bits)
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{
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WARN_ONCE(1, "regmap API is disabled");
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return -EINVAL;
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}
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static inline int regmap_field_update_bits_base(struct regmap_field *field,
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unsigned int mask, unsigned int val,
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bool *change, bool async, bool force)
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