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Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss Cc: Vladimir Oltean , Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" Subject: [PATCH net-next v2 2/5] net: dsa: microchip: add an enum for regmap widths Date: Fri, 26 May 2023 09:34:42 +0200 Message-Id: <20230526073445.668430-3-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230526073445.668430-1-o.rempel@pengutronix.de> References: <20230526073445.668430-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vladimir Oltean It is not immediately obvious that this driver allocates, via the KSZ_REGMAP_TABLE() macro, 3 regmaps for register access: dev->regmap[0] for 8-bit access, dev->regmap[1] for 16-bit and dev->regmap[2] for 32-bit access. In future changes that add support for reg_fields, each field will have to specify through which of the 3 regmaps it's going to go. Add an enum now, to denote one of the 3 register access widths, and make the code go through some wrapper functions for easier review and further modification. Signed-off-by: Vladimir Oltean Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz8795.c | 8 ++-- drivers/net/dsa/microchip/ksz8863_smi.c | 2 +- drivers/net/dsa/microchip/ksz9477.c | 24 +++++------ drivers/net/dsa/microchip/ksz9477_i2c.c | 2 +- drivers/net/dsa/microchip/ksz_common.c | 6 +-- drivers/net/dsa/microchip/ksz_common.h | 54 ++++++++++++++++-------- drivers/net/dsa/microchip/ksz_spi.c | 2 +- drivers/net/dsa/microchip/lan937x_main.c | 8 ++-- 8 files changed, 63 insertions(+), 43 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index f56fca1b1a22..d2f7fa3fbd27 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -28,13 +28,13 @@ static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set) { - regmap_update_bits(dev->regmap[0], addr, bits, set ? bits : 0); + regmap_update_bits(ksz_regmap_8(dev), addr, bits, set ? bits : 0); } static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits, bool set) { - regmap_update_bits(dev->regmap[0], PORT_CTRL_ADDR(port, offset), + regmap_update_bits(ksz_regmap_8(dev), PORT_CTRL_ADDR(port, offset), bits, set ? bits : 0); } @@ -1425,14 +1425,14 @@ int ksz8_setup(struct dsa_switch *ds) ksz_cfg(dev, S_LINK_AGING_CTRL, SW_LINK_AUTO_AGING, true); /* Enable aggressive back off algorithm in half duplex mode. */ - regmap_update_bits(dev->regmap[0], REG_SW_CTRL_1, + regmap_update_bits(ksz_regmap_8(dev), REG_SW_CTRL_1, SW_AGGR_BACKOFF, SW_AGGR_BACKOFF); /* * Make sure unicast VLAN boundary is set as default and * enable no excessive collision drop. */ - regmap_update_bits(dev->regmap[0], REG_SW_CTRL_2, + regmap_update_bits(ksz_regmap_8(dev), REG_SW_CTRL_2, UNICAST_VLAN_BOUNDARY | NO_EXC_COLLISION_DROP, UNICAST_VLAN_BOUNDARY | NO_EXC_COLLISION_DROP); diff --git a/drivers/net/dsa/microchip/ksz8863_smi.c b/drivers/net/dsa/microchip/ksz8863_smi.c index 3698112138b7..2af807db0b45 100644 --- a/drivers/net/dsa/microchip/ksz8863_smi.c +++ b/drivers/net/dsa/microchip/ksz8863_smi.c @@ -136,7 +136,7 @@ static int ksz8863_smi_probe(struct mdio_device *mdiodev) if (!dev) return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(ksz8863_regmap_config); i++) { + for (i = 0; i < __KSZ_NUM_REGMAPS; i++) { rc = ksz8863_regmap_config[i]; rc.lock_arg = &dev->regmap_mutex; dev->regmap[i] = devm_regmap_init(&mdiodev->dev, diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index bf13d47c26cf..3019f54049fc 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -21,25 +21,25 @@ static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set) { - regmap_update_bits(dev->regmap[0], addr, bits, set ? bits : 0); + regmap_update_bits(ksz_regmap_8(dev), addr, bits, set ? bits : 0); } static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits, bool set) { - regmap_update_bits(dev->regmap[0], PORT_CTRL_ADDR(port, offset), + regmap_update_bits(ksz_regmap_8(dev), PORT_CTRL_ADDR(port, offset), bits, set ? bits : 0); } static void ksz9477_cfg32(struct ksz_device *dev, u32 addr, u32 bits, bool set) { - regmap_update_bits(dev->regmap[2], addr, bits, set ? bits : 0); + regmap_update_bits(ksz_regmap_32(dev), addr, bits, set ? bits : 0); } static void ksz9477_port_cfg32(struct ksz_device *dev, int port, int offset, u32 bits, bool set) { - regmap_update_bits(dev->regmap[2], PORT_CTRL_ADDR(port, offset), + regmap_update_bits(ksz_regmap_32(dev), PORT_CTRL_ADDR(port, offset), bits, set ? bits : 0); } @@ -52,7 +52,7 @@ int ksz9477_change_mtu(struct ksz_device *dev, int port, int mtu) frame_size = mtu + VLAN_ETH_HLEN + ETH_FCS_LEN; - return regmap_update_bits(dev->regmap[1], REG_SW_MTU__2, + return regmap_update_bits(ksz_regmap_16(dev), REG_SW_MTU__2, REG_SW_MTU_MASK, frame_size); } @@ -60,7 +60,7 @@ static int ksz9477_wait_vlan_ctrl_ready(struct ksz_device *dev) { unsigned int val; - return regmap_read_poll_timeout(dev->regmap[0], REG_SW_VLAN_CTRL, + return regmap_read_poll_timeout(ksz_regmap_8(dev), REG_SW_VLAN_CTRL, val, !(val & VLAN_START), 10, 1000); } @@ -147,7 +147,7 @@ static int ksz9477_wait_alu_ready(struct ksz_device *dev) { unsigned int val; - return regmap_read_poll_timeout(dev->regmap[2], REG_SW_ALU_CTRL__4, + return regmap_read_poll_timeout(ksz_regmap_32(dev), REG_SW_ALU_CTRL__4, val, !(val & ALU_START), 10, 1000); } @@ -155,7 +155,7 @@ static int ksz9477_wait_alu_sta_ready(struct ksz_device *dev) { unsigned int val; - return regmap_read_poll_timeout(dev->regmap[2], + return regmap_read_poll_timeout(ksz_regmap_32(dev), REG_SW_ALU_STAT_CTRL__4, val, !(val & ALU_STAT_START), 10, 1000); @@ -170,7 +170,7 @@ int ksz9477_reset_switch(struct ksz_device *dev) ksz_cfg(dev, REG_SW_OPERATION, SW_RESET, true); /* turn off SPI DO Edge select */ - regmap_update_bits(dev->regmap[0], REG_SW_GLOBAL_SERIAL_CTRL_0, + regmap_update_bits(ksz_regmap_8(dev), REG_SW_GLOBAL_SERIAL_CTRL_0, SPI_AUTO_EDGE_DETECTION, 0); /* default configuration */ @@ -213,7 +213,7 @@ void ksz9477_r_mib_cnt(struct ksz_device *dev, int port, u16 addr, u64 *cnt) data |= (addr << MIB_COUNTER_INDEX_S); ksz_pwrite32(dev, port, REG_PORT_MIB_CTRL_STAT__4, data); - ret = regmap_read_poll_timeout(dev->regmap[2], + ret = regmap_read_poll_timeout(ksz_regmap_32(dev), PORT_CTRL_ADDR(port, REG_PORT_MIB_CTRL_STAT__4), val, !(val & MIB_COUNTER_READ), 10, 1000); /* failed to read MIB. get out of loop */ @@ -346,7 +346,7 @@ void ksz9477_flush_dyn_mac_table(struct ksz_device *dev, int port) const u16 *regs = dev->info->regs; u8 data; - regmap_update_bits(dev->regmap[0], REG_SW_LUE_CTRL_2, + regmap_update_bits(ksz_regmap_8(dev), REG_SW_LUE_CTRL_2, SW_FLUSH_OPTION_M << SW_FLUSH_OPTION_S, SW_FLUSH_OPTION_DYN_MAC << SW_FLUSH_OPTION_S); @@ -1165,7 +1165,7 @@ int ksz9477_setup(struct dsa_switch *ds) ksz_cfg(dev, REG_SW_MAC_CTRL_1, SW_JUMBO_PACKET, true); /* Now we can configure default MTU value */ - ret = regmap_update_bits(dev->regmap[1], REG_SW_MTU__2, REG_SW_MTU_MASK, + ret = regmap_update_bits(ksz_regmap_16(dev), REG_SW_MTU__2, REG_SW_MTU_MASK, VLAN_ETH_FRAME_LEN + ETH_FCS_LEN); if (ret) return ret; diff --git a/drivers/net/dsa/microchip/ksz9477_i2c.c b/drivers/net/dsa/microchip/ksz9477_i2c.c index 97a317263a2f..497be833f707 100644 --- a/drivers/net/dsa/microchip/ksz9477_i2c.c +++ b/drivers/net/dsa/microchip/ksz9477_i2c.c @@ -24,7 +24,7 @@ static int ksz9477_i2c_probe(struct i2c_client *i2c) if (!dev) return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(ksz9477_regmap_config); i++) { + for (i = 0; i < __KSZ_NUM_REGMAPS; i++) { rc = ksz9477_regmap_config[i]; rc.lock_arg = &dev->regmap_mutex; dev->regmap[i] = devm_regmap_init_i2c(i2c, &rc); diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index a4428be5f483..53bb7d9712d0 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2095,7 +2095,7 @@ static int ksz_setup(struct dsa_switch *ds) } /* set broadcast storm protection 10% rate */ - regmap_update_bits(dev->regmap[1], regs[S_BROADCAST_CTRL], + regmap_update_bits(ksz_regmap_16(dev), regs[S_BROADCAST_CTRL], BROADCAST_STORM_RATE, (BROADCAST_STORM_VALUE * BROADCAST_STORM_PROT_RATE) / 100); @@ -2106,7 +2106,7 @@ static int ksz_setup(struct dsa_switch *ds) ds->num_tx_queues = dev->info->num_tx_queues; - regmap_update_bits(dev->regmap[0], regs[S_MULTICAST_CTRL], + regmap_update_bits(ksz_regmap_8(dev), regs[S_MULTICAST_CTRL], MULTICAST_STORM_DISABLE, MULTICAST_STORM_DISABLE); ksz_init_mib_timer(dev); @@ -2156,7 +2156,7 @@ static int ksz_setup(struct dsa_switch *ds) } /* start switch */ - regmap_update_bits(dev->regmap[0], regs[S_START_CTRL], + regmap_update_bits(ksz_regmap_8(dev), regs[S_START_CTRL], SW_START, SW_START); return 0; diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index b86f1e27a0c3..f45f5fe11bde 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -22,6 +22,13 @@ struct ksz_device; struct ksz_port; +enum ksz_regmap_width { + KSZ_REGMAP_8, + KSZ_REGMAP_16, + KSZ_REGMAP_32, + __KSZ_NUM_REGMAPS, +}; + struct vlan_table { u32 table[3]; }; @@ -137,7 +144,7 @@ struct ksz_device { const struct ksz_dev_ops *dev_ops; struct device *dev; - struct regmap *regmap[3]; + struct regmap *regmap[__KSZ_NUM_REGMAPS]; void *priv; int irq; @@ -377,11 +384,25 @@ phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit); extern const struct ksz_chip_data ksz_switch_chips[]; /* Common register access functions */ +static inline struct regmap *ksz_regmap_8(struct ksz_device *dev) +{ + return dev->regmap[KSZ_REGMAP_8]; +} + +static inline struct regmap *ksz_regmap_16(struct ksz_device *dev) +{ + return dev->regmap[KSZ_REGMAP_16]; +} + +static inline struct regmap *ksz_regmap_32(struct ksz_device *dev) +{ + return dev->regmap[KSZ_REGMAP_32]; +} static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val) { unsigned int value; - int ret = regmap_read(dev->regmap[0], reg, &value); + int ret = regmap_read(ksz_regmap_8(dev), reg, &value); if (ret) dev_err(dev->dev, "can't read 8bit reg: 0x%x %pe\n", reg, @@ -394,7 +415,7 @@ static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val) static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val) { unsigned int value; - int ret = regmap_read(dev->regmap[1], reg, &value); + int ret = regmap_read(ksz_regmap_16(dev), reg, &value); if (ret) dev_err(dev->dev, "can't read 16bit reg: 0x%x %pe\n", reg, @@ -407,7 +428,7 @@ static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val) static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val) { unsigned int value; - int ret = regmap_read(dev->regmap[2], reg, &value); + int ret = regmap_read(ksz_regmap_32(dev), reg, &value); if (ret) dev_err(dev->dev, "can't read 32bit reg: 0x%x %pe\n", reg, @@ -422,7 +443,7 @@ static inline int ksz_read64(struct ksz_device *dev, u32 reg, u64 *val) u32 value[2]; int ret; - ret = regmap_bulk_read(dev->regmap[2], reg, value, 2); + ret = regmap_bulk_read(ksz_regmap_32(dev), reg, value, 2); if (ret) dev_err(dev->dev, "can't read 64bit reg: 0x%x %pe\n", reg, ERR_PTR(ret)); @@ -436,7 +457,7 @@ static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value) { int ret; - ret = regmap_write(dev->regmap[0], reg, value); + ret = regmap_write(ksz_regmap_8(dev), reg, value); if (ret) dev_err(dev->dev, "can't write 8bit reg: 0x%x %pe\n", reg, ERR_PTR(ret)); @@ -448,7 +469,7 @@ static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value) { int ret; - ret = regmap_write(dev->regmap[1], reg, value); + ret = regmap_write(ksz_regmap_16(dev), reg, value); if (ret) dev_err(dev->dev, "can't write 16bit reg: 0x%x %pe\n", reg, ERR_PTR(ret)); @@ -460,7 +481,7 @@ static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value) { int ret; - ret = regmap_write(dev->regmap[2], reg, value); + ret = regmap_write(ksz_regmap_32(dev), reg, value); if (ret) dev_err(dev->dev, "can't write 32bit reg: 0x%x %pe\n", reg, ERR_PTR(ret)); @@ -473,7 +494,7 @@ static inline int ksz_rmw16(struct ksz_device *dev, u32 reg, u16 mask, { int ret; - ret = regmap_update_bits(dev->regmap[1], reg, mask, value); + ret = regmap_update_bits(ksz_regmap_16(dev), reg, mask, value); if (ret) dev_err(dev->dev, "can't rmw 16bit reg 0x%x: %pe\n", reg, ERR_PTR(ret)); @@ -486,7 +507,7 @@ static inline int ksz_rmw32(struct ksz_device *dev, u32 reg, u32 mask, { int ret; - ret = regmap_update_bits(dev->regmap[2], reg, mask, value); + ret = regmap_update_bits(ksz_regmap_32(dev), reg, mask, value); if (ret) dev_err(dev->dev, "can't rmw 32bit reg 0x%x: %pe\n", reg, ERR_PTR(ret)); @@ -503,14 +524,14 @@ static inline int ksz_write64(struct ksz_device *dev, u32 reg, u64 value) val[0] = swab32(value & 0xffffffffULL); val[1] = swab32(value >> 32ULL); - return regmap_bulk_write(dev->regmap[2], reg, val, 2); + return regmap_bulk_write(ksz_regmap_32(dev), reg, val, 2); } static inline int ksz_rmw8(struct ksz_device *dev, int offset, u8 mask, u8 val) { int ret; - ret = regmap_update_bits(dev->regmap[0], offset, mask, val); + ret = regmap_update_bits(ksz_regmap_8(dev), offset, mask, val); if (ret) dev_err(dev->dev, "can't rmw 8bit reg 0x%x: %pe\n", offset, ERR_PTR(ret)); @@ -561,7 +582,7 @@ static inline int ksz_prmw8(struct ksz_device *dev, int port, int offset, { int ret; - ret = regmap_update_bits(dev->regmap[0], + ret = regmap_update_bits(ksz_regmap_8(dev), dev->dev_ops->get_port_addr(port, offset), mask, val); if (ret) @@ -570,7 +591,6 @@ static inline int ksz_prmw8(struct ksz_device *dev, int port, int offset, ERR_PTR(ret)); return ret; - } static inline void ksz_regmap_lock(void *__mtx) @@ -725,9 +745,9 @@ static inline int is_lan937x(struct ksz_device *dev) #define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \ static const struct regmap_config ksz##_regmap_config[] = { \ - KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \ - KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \ - KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \ + [KSZ_REGMAP_8] = KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \ + [KSZ_REGMAP_16] = KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \ + [KSZ_REGMAP_32] = KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \ } #endif diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchip/ksz_spi.c index 96c52e8fb51b..279338451621 100644 --- a/drivers/net/dsa/microchip/ksz_spi.c +++ b/drivers/net/dsa/microchip/ksz_spi.c @@ -63,7 +63,7 @@ static int ksz_spi_probe(struct spi_device *spi) else regmap_config = ksz9477_regmap_config; - for (i = 0; i < ARRAY_SIZE(ksz8795_regmap_config); i++) { + for (i = 0; i < __KSZ_NUM_REGMAPS; i++) { rc = regmap_config[i]; rc.lock_arg = &dev->regmap_mutex; rc.wr_table = chip->wr_table; diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c index 399a3905e6ca..b479a628b1ae 100644 --- a/drivers/net/dsa/microchip/lan937x_main.c +++ b/drivers/net/dsa/microchip/lan937x_main.c @@ -20,13 +20,13 @@ static int lan937x_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set) { - return regmap_update_bits(dev->regmap[0], addr, bits, set ? bits : 0); + return regmap_update_bits(ksz_regmap_8(dev), addr, bits, set ? bits : 0); } static int lan937x_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits, bool set) { - return regmap_update_bits(dev->regmap[0], PORT_CTRL_ADDR(port, offset), + return regmap_update_bits(ksz_regmap_8(dev), PORT_CTRL_ADDR(port, offset), bits, set ? bits : 0); } @@ -86,7 +86,7 @@ static int lan937x_internal_phy_write(struct ksz_device *dev, int addr, int reg, if (ret < 0) return ret; - ret = regmap_read_poll_timeout(dev->regmap[1], REG_VPHY_IND_CTRL__2, + ret = regmap_read_poll_timeout(ksz_regmap_16(dev), REG_VPHY_IND_CTRL__2, value, !(value & VPHY_IND_BUSY), 10, 1000); if (ret < 0) { @@ -116,7 +116,7 @@ static int lan937x_internal_phy_read(struct ksz_device *dev, int addr, int reg, if (ret < 0) return ret; - ret = regmap_read_poll_timeout(dev->regmap[1], REG_VPHY_IND_CTRL__2, + ret = regmap_read_poll_timeout(ksz_regmap_16(dev), REG_VPHY_IND_CTRL__2, value, !(value & VPHY_IND_BUSY), 10, 1000); if (ret < 0) { -- 2.39.2