Fix some style violations in the fsl_i2c I2C driver, and use shorter type names for variables in some cases.
Reviewed-by: Heiko Schocher hs@denx.de Signed-off-by: Mario Six mario.six@gdsys.cc ---
v1 -> v2: None
--- drivers/i2c/fsl_i2c.c | 111 +++++++++++++++++++++++++------------------------- 1 file changed, 56 insertions(+), 55 deletions(-)
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c index ff3dc25927..d957cf6286 100644 --- a/drivers/i2c/fsl_i2c.c +++ b/drivers/i2c/fsl_i2c.c @@ -116,10 +116,10 @@ static const struct { * * The return value is the actual bus speed that is set. */ -static unsigned int set_i2c_bus_speed(const struct fsl_i2c_base *base, - unsigned int i2c_clk, unsigned int speed) +static uint set_i2c_bus_speed(const struct fsl_i2c_base *base, + uint i2c_clk, uint speed) { - unsigned short divider = min(i2c_clk / speed, (unsigned int)USHRT_MAX); + ushort divider = min(i2c_clk / speed, (uint)USHRT_MAX);
/* * We want to choose an FDR/DFSR that generates an I2C bus speed that @@ -130,8 +130,8 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c_base *base, #ifdef __PPC__ u8 dfsr, fdr = 0x31; /* Default if no FDR found */ /* a, b and dfsr matches identifiers A,B and C respectively in AN2919 */ - unsigned short a, b, ga, gb; - unsigned long c_div, est_div; + ushort a, b, ga, gb; + ulong c_div, est_div;
#ifdef CONFIG_FSL_I2C_CUSTOM_DFSR dfsr = CONFIG_FSL_I2C_CUSTOM_DFSR; @@ -151,18 +151,21 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c_base *base, for (ga = 0x4, a = 10; a <= 30; ga++, a += 2) { for (gb = 0; gb < 8; gb++) { b = 16 << gb; - c_div = b * (a + ((3*dfsr)/b)*2); - if ((c_div > divider) && (c_div < est_div)) { - unsigned short bin_gb, bin_ga; + c_div = b * (a + ((3 * dfsr) / b) * 2); + if (c_div > divider && c_div < est_div) { + ushort bin_gb, bin_ga;
est_div = c_div; bin_gb = gb << 2; bin_ga = (ga & 0x3) | ((ga & 0x4) << 3); fdr = bin_gb | bin_ga; speed = i2c_clk / est_div; - debug("FDR:0x%.2x, div:%ld, ga:0x%x, gb:0x%x, " - "a:%d, b:%d, speed:%d\n", - fdr, est_div, ga, gb, a, b, speed); + + debug("FDR: 0x%.2x, ", fdr); + debug("div: %ld, ", est_div); + debug("ga: 0x%x, gb: 0x%x, ", ga, gb); + debug("a: %d, b: %d, speed: %d\n", a, b, speed); + /* Condition 2 not accounted for */ debug("Tr <= %d ns\n", (b - 3 * dfsr) * 1000000 / @@ -174,13 +177,13 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c_base *base, if (a == 24) a += 4; } - debug("divider:%d, est_div:%ld, DFSR:%d\n", divider, est_div, dfsr); - debug("FDR:0x%.2x, speed:%d\n", fdr, speed); + debug("divider: %d, est_div: %ld, DFSR: %d\n", divider, est_div, dfsr); + debug("FDR: 0x%.2x, speed: %d\n", fdr, speed); #endif writeb(dfsr, &base->dfsrr); /* set default filter */ writeb(fdr, &base->fdr); /* set bus speed */ #else - unsigned int i; + uint i;
for (i = 0; i < ARRAY_SIZE(fsl_i2c_speed_map); i++) if (fsl_i2c_speed_map[i].divider >= divider) { @@ -197,7 +200,7 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c_base *base, }
#ifndef CONFIG_DM_I2C -static unsigned int get_i2c_clock(int bus) +static uint get_i2c_clock(int bus) { if (bus) return gd->arch.i2c2_clk; /* I2C2 clock */ @@ -211,10 +214,11 @@ static int fsl_i2c_fixup(const struct fsl_i2c_base *base) const unsigned long long timeout = usec2ticks(CONFIG_I2C_MBB_TIMEOUT); unsigned long long timeval = 0; int ret = -1; - unsigned int flags = 0; + uint flags = 0;
#ifdef CONFIG_SYS_FSL_ERRATUM_I2C_A004447 - unsigned int svr = get_svr(); + uint svr = get_svr(); + if ((SVR_SOC_VER(svr) == SVR_8548 && IS_SVR_REV(svr, 3, 1)) || (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV)) flags = I2C_CR_BIT6; @@ -263,7 +267,7 @@ static void __i2c_init(const struct fsl_i2c_base *base, int speed, int /* Call board specific i2c bus reset routine before accessing the * environment, which might be in a chip on that bus. For details * about this problem see doc/I2C_Edge_Conditions. - */ + */ i2c_init_board(); #endif writeb(0, &base->cr); /* stop I2C controller */ @@ -286,8 +290,7 @@ static void __i2c_init(const struct fsl_i2c_base *base, int speed, int } }
-static int -i2c_wait4bus(const struct fsl_i2c_base *base) +static int i2c_wait4bus(const struct fsl_i2c_base *base) { unsigned long long timeval = get_ticks(); const unsigned long long timeout = usec2ticks(CONFIG_I2C_MBB_TIMEOUT); @@ -300,8 +303,7 @@ i2c_wait4bus(const struct fsl_i2c_base *base) return 0; }
-static inline int -i2c_wait(const struct fsl_i2c_base *base, int write) +static inline int i2c_wait(const struct fsl_i2c_base *base, int write) { u32 csr; unsigned long long timeval = get_ticks(); @@ -317,29 +319,29 @@ i2c_wait(const struct fsl_i2c_base *base, int write) writeb(0x0, &base->sr);
if (csr & I2C_SR_MAL) { - debug("i2c_wait: MAL\n"); + debug("%s: MAL\n", __func__); return -1; }
if (!(csr & I2C_SR_MCF)) { - debug("i2c_wait: unfinished\n"); + debug("%s: unfinished\n", __func__); return -1; }
if (write == I2C_WRITE_BIT && (csr & I2C_SR_RXAK)) { - debug("i2c_wait: No RXACK\n"); + debug("%s: No RXACK\n", __func__); return -1; }
return 0; } while ((get_ticks() - timeval) < timeout);
- debug("i2c_wait: timed out\n"); + debug("%s: timed out\n", __func__); return -1; }
-static inline int -i2c_write_addr(const struct fsl_i2c_base *base, u8 dev, u8 dir, int rsta) +static inline int i2c_write_addr(const struct fsl_i2c_base *base, u8 dev, + u8 dir, int rsta) { writeb(I2C_CR_MEN | I2C_CR_MSTA | I2C_CR_MTX | (rsta ? I2C_CR_RSTA : 0), @@ -353,8 +355,8 @@ i2c_write_addr(const struct fsl_i2c_base *base, u8 dev, u8 dir, int rsta) return 1; }
-static inline int -__i2c_write_data(const struct fsl_i2c_base *base, u8 *data, int length) +static inline int __i2c_write_data(const struct fsl_i2c_base *base, u8 *data, + int length) { int i;
@@ -368,8 +370,8 @@ __i2c_write_data(const struct fsl_i2c_base *base, u8 *data, int length) return i; }
-static inline int -__i2c_read_data(const struct fsl_i2c_base *base, u8 *data, int length) +static inline int __i2c_read_data(const struct fsl_i2c_base *base, u8 *data, + int length) { int i;
@@ -399,9 +401,8 @@ __i2c_read_data(const struct fsl_i2c_base *base, u8 *data, int length) return i; }
-static int -__i2c_read(const struct fsl_i2c_base *base, u8 chip_addr, u8 *offset, int olen, - u8 *data, int dlen) +static int __i2c_read(const struct fsl_i2c_base *base, u8 chip_addr, u8 *offset, + int olen, u8 *data, int dlen) { int ret = -1; /* signal error */
@@ -447,9 +448,8 @@ __i2c_read(const struct fsl_i2c_base *base, u8 chip_addr, u8 *offset, int olen, return -1; }
-static int -__i2c_write(const struct fsl_i2c_base *base, u8 chip_addr, u8 *offset, int olen, - u8 *data, int dlen) +static int __i2c_write(const struct fsl_i2c_base *base, u8 chip_addr, + u8 *offset, int olen, u8 *data, int dlen) { int ret = -1; /* signal error */
@@ -471,10 +471,9 @@ __i2c_write(const struct fsl_i2c_base *base, u8 chip_addr, u8 *offset, int olen, return -1; }
-static int -__i2c_probe_chip(const struct fsl_i2c_base *base, uchar chip) +static int __i2c_probe_chip(const struct fsl_i2c_base *base, uchar chip) { - /* For unknow reason the controller will ACK when + /* For unknown reason the controller will ACK when * probing for a slave with the same address, so skip * it. */ @@ -484,8 +483,8 @@ __i2c_probe_chip(const struct fsl_i2c_base *base, uchar chip) return __i2c_read(base, chip, 0, 0, NULL, 0); }
-static unsigned int __i2c_set_bus_speed(const struct fsl_i2c_base *base, - unsigned int speed, int i2c_clk) +static uint __i2c_set_bus_speed(const struct fsl_i2c_base *base, + uint speed, int i2c_clk) { writeb(0, &base->cr); /* stop controller */ set_i2c_bus_speed(base, i2c_clk, speed); @@ -501,32 +500,30 @@ static void fsl_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) get_i2c_clock(adap->hwadapnr), adap->hwadapnr); }
-static int -fsl_i2c_probe_chip(struct i2c_adapter *adap, uchar chip) +static int fsl_i2c_probe_chip(struct i2c_adapter *adap, uchar chip) { return __i2c_probe_chip(i2c_base[adap->hwadapnr], chip); }
-static int -fsl_i2c_read(struct i2c_adapter *adap, u8 chip_addr, uint offset, int olen, - u8 *data, int dlen) +static int fsl_i2c_read(struct i2c_adapter *adap, u8 chip_addr, uint offset, + int olen, u8 *data, int dlen) { u8 *o = (u8 *)&offset; + return __i2c_read(i2c_base[adap->hwadapnr], chip_addr, &o[4 - olen], olen, data, dlen); }
-static int -fsl_i2c_write(struct i2c_adapter *adap, u8 chip_addr, uint offset, int olen, - u8 *data, int dlen) +static int fsl_i2c_write(struct i2c_adapter *adap, u8 chip_addr, uint offset, + int olen, u8 *data, int dlen) { u8 *o = (u8 *)&offset; + return __i2c_write(i2c_base[adap->hwadapnr], chip_addr, &o[4 - olen], olen, data, dlen); }
-static unsigned int fsl_i2c_set_bus_speed(struct i2c_adapter *adap, - unsigned int speed) +static uint fsl_i2c_set_bus_speed(struct i2c_adapter *adap, uint speed) { return __i2c_set_bus_speed(i2c_base[adap->hwadapnr], speed, get_i2c_clock(adap->hwadapnr)); @@ -562,12 +559,14 @@ static int fsl_i2c_probe_chip(struct udevice *bus, u32 chip_addr, u32 chip_flags) { struct fsl_i2c_dev *dev = dev_get_priv(bus); + return __i2c_probe_chip(dev->base, chip_addr); }
-static int fsl_i2c_set_bus_speed(struct udevice *bus, unsigned int speed) +static int fsl_i2c_set_bus_speed(struct udevice *bus, uint speed) { struct fsl_i2c_dev *dev = dev_get_priv(bus); + return __i2c_set_bus_speed(dev->base, speed, dev->i2c_clk); }
@@ -600,6 +599,7 @@ static int fsl_i2c_ofdata_to_platdata(struct udevice *bus) static int fsl_i2c_probe(struct udevice *bus) { struct fsl_i2c_dev *dev = dev_get_priv(bus); + __i2c_init(dev->base, dev->speed, dev->slaveadd, dev->i2c_clk, dev->index); return 0; @@ -613,7 +613,8 @@ static int fsl_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs) memset(&dummy, 0, sizeof(struct i2c_msg));
/* We expect either two messages (one with an offset and one with the - * actucal data) or one message (just data) */ + * actual data) or one message (just data) + */ if (nmsgs > 2 || nmsgs == 0) { debug("%s: Only one or two messages are supported.", __func__); return -1; -- 2.13.6