diff options
author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-03-24 14:32:16 +0200 |
---|---|---|
committer | Wolfram Sang <wsa@the-dreams.de> | 2020-03-24 22:36:59 +0100 |
commit | 90224e6468e15d5eb22a10ae1849cf8ca2e7360a (patch) | |
tree | f5ba968fec565daa61c1bff4d04da380873f0254 /drivers/i2c | |
parent | 7b8c4c0b2acbdf355f0b78557d6f7290955d726d (diff) | |
download | linux-90224e6468e15d5eb22a10ae1849cf8ca2e7360a.tar.bz2 |
i2c: drivers: Use generic definitions for bus frequencies
Since we have generic definitions for bus frequencies, let's use them.
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Robert Richter <rrichter@marvell.com>
Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com>
Acked-by: Elie Morisse <syniurge@gmail.com>
Acked-by: Nehal Shah <nehal-bakulchandra.shah@amd.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
44 files changed, 165 insertions, 199 deletions
diff --git a/drivers/i2c/busses/i2c-altera.c b/drivers/i2c/busses/i2c-altera.c index 5255d3755411..df56b4bb8b97 100644 --- a/drivers/i2c/busses/i2c-altera.c +++ b/drivers/i2c/busses/i2c-altera.c @@ -147,7 +147,7 @@ static void altr_i2c_init(struct altr_i2c_dev *idev) (ALTR_I2C_THRESHOLD << ALTR_I2C_CTRL_TCT_SHFT); u32 t_high, t_low; - if (idev->bus_clk_rate <= 100000) { + if (idev->bus_clk_rate <= I2C_MAX_STANDARD_MODE_FREQ) { tmp &= ~ALTR_I2C_CTRL_BSPEED; /* Standard mode SCL 50/50 */ t_high = divisor * 1 / 2; @@ -423,10 +423,10 @@ static int altr_i2c_probe(struct platform_device *pdev) &idev->bus_clk_rate); if (val) { dev_err(&pdev->dev, "Default to 100kHz\n"); - idev->bus_clk_rate = 100000; /* default clock rate */ + idev->bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ; /* default clock rate */ } - if (idev->bus_clk_rate > 400000) { + if (idev->bus_clk_rate > I2C_MAX_FAST_MODE_FREQ) { dev_err(&pdev->dev, "invalid clock-frequency %d\n", idev->bus_clk_rate); return -EINVAL; diff --git a/drivers/i2c/busses/i2c-amd-mp2-plat.c b/drivers/i2c/busses/i2c-amd-mp2-plat.c index f5b3f00c6559..17df9e8845b6 100644 --- a/drivers/i2c/busses/i2c-amd-mp2-plat.c +++ b/drivers/i2c/busses/i2c-amd-mp2-plat.c @@ -201,32 +201,37 @@ static int i2c_amd_resume(struct amd_i2c_common *i2c_common) } #endif +static const u32 supported_speeds[] = { + I2C_MAX_HIGH_SPEED_MODE_FREQ, + I2C_MAX_TURBO_MODE_FREQ, + I2C_MAX_FAST_MODE_PLUS_FREQ, + I2C_MAX_FAST_MODE_FREQ, + I2C_MAX_STANDARD_MODE_FREQ, +}; + static enum speed_enum i2c_amd_get_bus_speed(struct platform_device *pdev) { u32 acpi_speed; int i; - static const u32 supported_speeds[] = { - 0, 100000, 400000, 1000000, 1400000, 3400000 - }; acpi_speed = i2c_acpi_find_bus_speed(&pdev->dev); /* round down to the lowest standard speed */ - for (i = 1; i < ARRAY_SIZE(supported_speeds); i++) { - if (acpi_speed < supported_speeds[i]) + for (i = 0; i < ARRAY_SIZE(supported_speeds); i++) { + if (acpi_speed >= supported_speeds[i]) break; } - acpi_speed = supported_speeds[i - 1]; + acpi_speed = i < ARRAY_SIZE(supported_speeds) ? supported_speeds[i] : 0; switch (acpi_speed) { - case 100000: + case I2C_MAX_STANDARD_MODE_FREQ: return speed100k; - case 400000: + case I2C_MAX_FAST_MODE_FREQ: return speed400k; - case 1000000: + case I2C_MAX_FAST_MODE_PLUS_FREQ: return speed1000k; - case 1400000: + case I2C_MAX_TURBO_MODE_FREQ: return speed1400k; - case 3400000: + case I2C_MAX_HIGH_SPEED_MODE_FREQ: return speed3400k; default: return speed400k; diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index a7be6f24450b..07c1993274c5 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -997,7 +997,7 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) if (ret < 0) { dev_err(&pdev->dev, "Could not read bus-frequency property\n"); - bus->bus_frequency = 100000; + bus->bus_frequency = I2C_MAX_STANDARD_MODE_FREQ; } match = of_match_node(aspeed_i2c_bus_of_table, pdev->dev.of_node); diff --git a/drivers/i2c/busses/i2c-axxia.c b/drivers/i2c/busses/i2c-axxia.c index 0214daa913ff..be3681d08a8d 100644 --- a/drivers/i2c/busses/i2c-axxia.c +++ b/drivers/i2c/busses/i2c-axxia.c @@ -199,7 +199,7 @@ static int axxia_i2c_init(struct axxia_i2c_dev *idev) /* Enable Master Mode */ writel(0x1, idev->base + GLOBAL_CONTROL); - if (idev->bus_clk_rate <= 100000) { + if (idev->bus_clk_rate <= I2C_MAX_STANDARD_MODE_FREQ) { /* Standard mode SCL 50/50, tSU:DAT = 250 ns */ t_high = divisor * 1 / 2; t_low = divisor * 1 / 2; @@ -765,7 +765,7 @@ static int axxia_i2c_probe(struct platform_device *pdev) of_property_read_u32(np, "clock-frequency", &idev->bus_clk_rate); if (idev->bus_clk_rate == 0) - idev->bus_clk_rate = 100000; /* default clock rate */ + idev->bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ; /* default clock rate */ ret = clk_prepare_enable(idev->i2c_clk); if (ret) { diff --git a/drivers/i2c/busses/i2c-bcm-iproc.c b/drivers/i2c/busses/i2c-bcm-iproc.c index 30efb7913b2e..44be0926b566 100644 --- a/drivers/i2c/busses/i2c-bcm-iproc.c +++ b/drivers/i2c/busses/i2c-bcm-iproc.c @@ -858,25 +858,25 @@ static int bcm_iproc_i2c_cfg_speed(struct bcm_iproc_i2c_dev *iproc_i2c) if (ret < 0) { dev_info(iproc_i2c->device, "unable to interpret clock-frequency DT property\n"); - bus_speed = 100000; + bus_speed = I2C_MAX_STANDARD_MODE_FREQ; } - if (bus_speed < 100000) { + if (bus_speed < I2C_MAX_STANDARD_MODE_FREQ) { dev_err(iproc_i2c->device, "%d Hz bus speed not supported\n", bus_speed); dev_err(iproc_i2c->device, "valid speeds are 100khz and 400khz\n"); return -EINVAL; - } else if (bus_speed < 400000) { - bus_speed = 100000; + } else if (bus_speed < I2C_MAX_FAST_MODE_FREQ) { + bus_speed = I2C_MAX_STANDARD_MODE_FREQ; } else { - bus_speed = 400000; + bus_speed = I2C_MAX_FAST_MODE_FREQ; } iproc_i2c->bus_speed = bus_speed; val = iproc_i2c_rd_reg(iproc_i2c, TIM_CFG_OFFSET); val &= ~BIT(TIM_CFG_MODE_400_SHIFT); - val |= (bus_speed == 400000) << TIM_CFG_MODE_400_SHIFT; + val |= (bus_speed == I2C_MAX_FAST_MODE_FREQ) << TIM_CFG_MODE_400_SHIFT; iproc_i2c_wr_reg(iproc_i2c, TIM_CFG_OFFSET, val); dev_info(iproc_i2c->device, "bus set to %u Hz\n", bus_speed); @@ -1029,7 +1029,7 @@ static int bcm_iproc_i2c_resume(struct device *dev) /* configure to the desired bus speed */ val = iproc_i2c_rd_reg(iproc_i2c, TIM_CFG_OFFSET); val &= ~BIT(TIM_CFG_MODE_400_SHIFT); - val |= (iproc_i2c->bus_speed == 400000) << TIM_CFG_MODE_400_SHIFT; + val |= (iproc_i2c->bus_speed == I2C_MAX_FAST_MODE_FREQ) << TIM_CFG_MODE_400_SHIFT; iproc_i2c_wr_reg(iproc_i2c, TIM_CFG_OFFSET, val); bcm_iproc_i2c_enable_disable(iproc_i2c, true); diff --git a/drivers/i2c/busses/i2c-bcm-kona.c b/drivers/i2c/busses/i2c-bcm-kona.c index 4e489a9d16fb..572aebbb254e 100644 --- a/drivers/i2c/busses/i2c-bcm-kona.c +++ b/drivers/i2c/busses/i2c-bcm-kona.c @@ -722,16 +722,16 @@ static int bcm_kona_i2c_assign_bus_speed(struct bcm_kona_i2c_dev *dev) } switch (bus_speed) { - case 100000: + case I2C_MAX_STANDARD_MODE_FREQ: dev->std_cfg = &std_cfg_table[BCM_SPD_100K]; break; - case 400000: + case I2C_MAX_FAST_MODE_FREQ: dev->std_cfg = &std_cfg_table[BCM_SPD_400K]; break; - case 1000000: + case I2C_MAX_FAST_MODE_PLUS_FREQ: dev->std_cfg = &std_cfg_table[BCM_SPD_1MHZ]; break; - case 3400000: + case I2C_MAX_HIGH_SPEED_MODE_FREQ: /* Send mastercode at 100k */ dev->std_cfg = &std_cfg_table[BCM_SPD_100K]; dev->hs_cfg = &hs_cfg_table[BCM_SPD_3P4MHZ]; diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c index 5ab901ad615d..d9b86fcc3825 100644 --- a/drivers/i2c/busses/i2c-bcm2835.c +++ b/drivers/i2c/busses/i2c-bcm2835.c @@ -439,7 +439,7 @@ static int bcm2835_i2c_probe(struct platform_device *pdev) if (ret < 0) { dev_warn(&pdev->dev, "Could not read clock-frequency property\n"); - bus_clk_rate = 100000; + bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ; } ret = clk_set_rate_exclusive(i2c_dev->bus_clk, bus_clk_rate); diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c index 1105aee6634a..89d58f7d2a25 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -104,9 +104,6 @@ #define DRIVER_NAME "cdns-i2c" -#define CDNS_I2C_SPEED_MAX 400000 -#define CDNS_I2C_SPEED_DEFAULT 100000 - #define CDNS_I2C_DIVA_MAX 4 #define CDNS_I2C_DIVB_MAX 64 @@ -949,8 +946,8 @@ static int cdns_i2c_probe(struct platform_device *pdev) ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &id->i2c_clk); - if (ret || (id->i2c_clk > CDNS_I2C_SPEED_MAX)) - id->i2c_clk = CDNS_I2C_SPEED_DEFAULT; + if (ret || (id->i2c_clk > I2C_MAX_FAST_MODE_FREQ)) + id->i2c_clk = I2C_MAX_STANDARD_MODE_FREQ; cdns_i2c_writereg(CDNS_I2C_CR_ACK_EN | CDNS_I2C_CR_NEA | CDNS_I2C_CR_MS, CDNS_I2C_CR_OFFSET); diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index cb494273bb60..c98befe2a92e 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -99,16 +99,16 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev) dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt, &fs_ht); switch (t->bus_freq_hz) { - case 100000: + case I2C_MAX_STANDARD_MODE_FREQ: dev->sda_hold_time = ss_ht; break; - case 1000000: + case I2C_MAX_FAST_MODE_PLUS_FREQ: dev->sda_hold_time = fp_ht; break; - case 3400000: + case I2C_MAX_HIGH_SPEED_MODE_FREQ: dev->sda_hold_time = hs_ht; break; - case 400000: + case I2C_MAX_FAST_MODE_FREQ: default: dev->sda_hold_time = fs_ht; break; @@ -198,10 +198,10 @@ static void i2c_dw_configure_master(struct dw_i2c_dev *dev) dev->mode = DW_IC_MASTER; switch (t->bus_freq_hz) { - case 100000: + case I2C_MAX_STANDARD_MODE_FREQ: dev->master_cfg |= DW_IC_CON_SPEED_STD; break; - case 3400000: + case I2C_MAX_HIGH_SPEED_MODE_FREQ: dev->master_cfg |= DW_IC_CON_SPEED_HIGH; break; default: @@ -227,6 +227,13 @@ static void dw_i2c_plat_pm_cleanup(struct dw_i2c_dev *dev) pm_runtime_put_noidle(dev->dev); } +static const u32 supported_speeds[] = { + I2C_MAX_HIGH_SPEED_MODE_FREQ, + I2C_MAX_FAST_MODE_PLUS_FREQ, + I2C_MAX_FAST_MODE_FREQ, + I2C_MAX_STANDARD_MODE_FREQ, +}; + static int dw_i2c_plat_probe(struct platform_device *pdev) { struct dw_i2c_platform_data *pdata = dev_get_platdata(&pdev->dev); @@ -236,9 +243,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) u32 acpi_speed; struct resource *mem; int i, irq, ret; - static const int supported_speeds[] = { - 0, 100000, 400000, 1000000, 3400000 - }; irq = platform_get_irq(pdev, 0); if (irq < 0) @@ -274,11 +278,11 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) * Some DSTDs use a non standard speed, round down to the lowest * standard speed. */ - for (i = 1; i < ARRAY_SIZE(supported_speeds); i++) { - if (acpi_speed < supported_speeds[i]) + for (i = 0; i < ARRAY_SIZE(supported_speeds); i++) { + if (acpi_speed >= supported_speeds[i]) break; } - acpi_speed = supported_speeds[i - 1]; + acpi_speed = i < ARRAY_SIZE(supported_speeds) ? supported_speeds[i] : 0; /* * Find bus speed from the "clock-frequency" device property, ACPI @@ -289,7 +293,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) else if (acpi_speed || t->bus_freq_hz) t->bus_freq_hz = max(t->bus_freq_hz, acpi_speed); else - t->bus_freq_hz = 400000; + t->bus_freq_hz = I2C_MAX_FAST_MODE_FREQ; dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev); @@ -303,8 +307,11 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) * Only standard mode at 100kHz, fast mode at 400kHz, * fast mode plus at 1MHz and high speed mode at 3.4MHz are supported. */ - if (t->bus_freq_hz != 100000 && t->bus_freq_hz != 400000 && - t->bus_freq_hz != 1000000 && t->bus_freq_hz != 3400000) { + for (i = 0; i < ARRAY_SIZE(supported_speeds); i++) { + if (t->bus_freq_hz == supported_speeds[i]) + break; + } + if (i == ARRAY_SIZE(supported_speeds)) { dev_err(&pdev->dev, "%d Hz is unsupported, only 100kHz, 400kHz, 1MHz and 3.4MHz are supported\n", t->bus_freq_hz); diff --git a/drivers/i2c/busses/i2c-digicolor.c b/drivers/i2c/busses/i2c-digicolor.c index 3adf72540db1..056a5c4f0833 100644 --- a/drivers/i2c/busses/i2c-digicolor.c +++ b/drivers/i2c/busses/i2c-digicolor.c @@ -18,7 +18,6 @@ #include <linux/of.h> #include <linux/platform_device.h> -#define DEFAULT_FREQ 100000 #define TIMEOUT_MS 100 #define II_CONTROL 0x0 @@ -300,7 +299,7 @@ static int dc_i2c_probe(struct platform_device *pdev) if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", &i2c->frequency)) - i2c->frequency = DEFAULT_FREQ; + i2c->frequency = I2C_MAX_STANDARD_MODE_FREQ; i2c->dev = &pdev->dev; platform_set_drvdata(pdev, i2c); diff --git a/drivers/i2c/busses/i2c-diolan-u2c.c b/drivers/i2c/busses/i2c-diolan-u2c.c index 382f105e0fe3..b48b7888936f 100644 --- a/drivers/i2c/busses/i2c-diolan-u2c.c +++ b/drivers/i2c/busses/i2c-diolan-u2c.c @@ -64,8 +64,6 @@ #define U2C_I2C_SPEED_2KHZ 242 /* 2 kHz, minimum speed */ #define U2C_I2C_SPEED(f) ((DIV_ROUND_UP(1000000, (f)) - 10) / 2 + 1) -#define U2C_I2C_FREQ_FAST 400000 -#define U2C_I2C_FREQ_STD 100000 #define U2C_I2C_FREQ(s) (1000000 / (2 * (s - 1) + 10)) #define DIOLAN_USB_TIMEOUT 100 /* in ms */ @@ -87,7 +85,7 @@ struct i2c_diolan_u2c { int ocount; /* Number of enqueued messages */ }; -static uint frequency = U2C_I2C_FREQ_STD; /* I2C clock frequency in Hz */ +static uint frequency = I2C_MAX_STANDARD_MODE_FREQ; /* I2C clock frequency in Hz */ module_param(frequency, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(frequency, "I2C clock frequency in hertz"); @@ -299,12 +297,12 @@ static int diolan_init(struct i2c_diolan_u2c *dev) { int speed, ret; - if (frequency >= 200000) { + if (frequency >= 2 * I2C_MAX_STANDARD_MODE_FREQ) { speed = U2C_I2C_SPEED_FAST; - frequency = U2C_I2C_FREQ_FAST; - } else if (frequency >= 100000 || frequency == 0) { + frequency = I2C_MAX_FAST_MODE_FREQ; + } else if (frequency >= I2C_MAX_STANDARD_MODE_FREQ || frequency == 0) { speed = U2C_I2C_SPEED_STD; - frequency = U2C_I2C_FREQ_STD; + frequency = I2C_MAX_STANDARD_MODE_FREQ; } else { speed = U2C_I2C_SPEED(frequency); if (speed > U2C_I2C_SPEED_2KHZ) diff --git a/drivers/i2c/busses/i2c-efm32.c b/drivers/i2c/busses/i2c-efm32.c index a8c6323e7f44..18cca8f56da8 100644 --- a/drivers/i2c/busses/i2c-efm32.c +++ b/drivers/i2c/busses/i2c-efm32.c @@ -388,7 +388,7 @@ static int efm32_i2c_probe(struct platform_device *pdev) if (!ret) { dev_dbg(&pdev->dev, "using frequency %u\n", frequency); } else { - frequency = 100000; + frequency = I2C_MAX_STANDARD_MODE_FREQ; dev_info(&pdev->dev, "defaulting to 100 kHz\n"); } ddata->frequency = frequency; diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index e7514c16b756..527030953ba1 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -164,13 +164,6 @@ #define HSI2C_MASTER_ID(x) ((x & 0xff) << 24) #define MASTER_ID(x) ((x & 0x7) + 0x08) -/* - * Controller operating frequency, timing values for operation - * are calculated against this frequency - */ -#define HSI2C_HS_TX_CLOCK 1000000 -#define HSI2C_FS_TX_CLOCK 100000 - #define EXYNOS5_I2C_TIMEOUT (msecs_to_jiffies(100)) enum i2c_type_exynos { @@ -264,6 +257,9 @@ static void exynos5_i2c_clr_pend_irq(struct exynos5_i2c *i2c) * exynos5_i2c_set_timing: updates the registers with appropriate * timing values calculated * + * Timing values for operation are calculated against either 100kHz + * or 1MHz controller operating frequency. + * * Returns 0 on success, -EINVAL if the cycle length cannot * be calculated. */ @@ -281,7 +277,7 @@ static int exynos5_i2c_set_timing(struct exynos5_i2c *i2c, bool hs_timings) unsigned int t_ftl_cycle; unsigned int clkin = clk_get_rate(i2c->clk); unsigned int op_clk = hs_timings ? i2c->op_clock : - (i2c->op_clock >= HSI2C_HS_TX_CLOCK) ? HSI2C_FS_TX_CLOCK : + (i2c->op_clock >= I2C_MAX_FAST_MODE_PLUS_FREQ) ? I2C_MAX_STANDARD_MODE_FREQ : i2c->op_clock; int div, clk_cycle, temp; @@ -353,7 +349,7 @@ static int exynos5_hsi2c_clock_setup(struct exynos5_i2c *i2c) /* always set Fast Speed timings */ int ret = exynos5_i2c_set_timing(i2c, false); - if (ret < 0 || i2c->op_clock < HSI2C_HS_TX_CLOCK) + if (ret < 0 || i2c->op_clock < I2C_MAX_FAST_MODE_PLUS_FREQ) return ret; return exynos5_i2c_set_timing(i2c, true); @@ -376,7 +372,7 @@ static void exynos5_i2c_init(struct exynos5_i2c *i2c) i2c->regs + HSI2C_CTL); writel(HSI2C_TRAILING_COUNT, i2c->regs + HSI2C_TRAILIG_CTL); - if (i2c->op_clock >= HSI2C_HS_TX_CLOCK) { + if (i2c->op_clock >= I2C_MAX_FAST_MODE_PLUS_FREQ) { writel(HSI2C_MASTER_ID(MASTER_ID(i2c->adap.nr)), i2c->regs + HSI2C_ADDR); i2c_conf |= HSI2C_HS_MODE; @@ -748,7 +744,7 @@ static int exynos5_i2c_probe(struct platform_device *pdev) return -ENOMEM; if (of_property_read_u32(np, "clock-frequency", &i2c->op_clock)) - i2c->op_clock = HSI2C_FS_TX_CLOCK; + i2c->op_clock = I2C_MAX_STANDARD_MODE_FREQ; strlcpy(i2c->adap.name, "exynos5-i2c", sizeof(i2c->adap.name)); i2c->adap.owner = THIS_MODULE; diff --git a/drivers/i2c/busses/i2c-hix5hd2.c b/drivers/i2c/busses/i2c-hix5hd2.c index 8497c7a95dd4..febc591efbef 100644 --- a/drivers/i2c/busses/i2c-hix5hd2.c +++ b/drivers/i2c/busses/i2c-hix5hd2.c @@ -68,8 +68,6 @@ #define I2C_ARBITRATE_INTR BIT(1) #define I2C_OVER_INTR BIT(0) -#define HIX5I2C_MAX_FREQ 400000 /* 400k */ - enum hix5hd2_i2c_state { HIX5I2C_STAT_RW_ERR = -1, HIX5I2C_STAT_INIT, @@ -400,12 +398,12 @@ static int hix5hd2_i2c_probe(struct platform_device *pdev) if (of_property_read_u32(np, "clock-frequency", &freq)) { /* use 100k as default value */ - priv->freq = 100000; + priv->freq = I2C_MAX_STANDARD_MODE_FREQ; } else { - if (freq > HIX5I2C_MAX_FREQ) { - priv->freq = HIX5I2C_MAX_FREQ; + if (freq > I2C_MAX_FAST_MODE_FREQ) { + priv->freq = I2C_MAX_FAST_MODE_FREQ; dev_warn(priv->dev, "use max freq %d instead\n", - HIX5I2C_MAX_FREQ); + I2C_MAX_FAST_MODE_FREQ); } else { priv->freq = freq; } diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c index 20a4fbc53007..422097a31c95 100644 --- a/drivers/i2c/busses/i2c-img-scb.c +++ b/drivers/i2c/busses/i2c-img-scb.c @@ -304,7 +304,7 @@ static struct img_i2c_timings timings[] = { /* Standard mode */ { .name = "standard", - .max_bitrate = 100000, + .max_bitrate = I2C_MAX_STANDARD_MODE_FREQ, .tckh = 4000, .tckl = 4700, .tsdh = 4700, @@ -316,7 +316,7 @@ static struct img_i2c_timings timings[] = { /* Fast mode */ { .name = "fast", - .max_bitrate = 400000, + .max_bitrate = I2C_MAX_FAST_MODE_FREQ, .tckh = 600, .tckl = 1300, .tsdh = 600, diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c index c92b56485fa6..94743ba581fe 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -75,12 +75,6 @@ #define I2C_CLK_RATIO 2 #define CHUNK_DATA 256 -#define LPI2C_DEFAULT_RATE 100000 -#define STARDARD_MAX_BITRATE 400000 -#define FAST_MAX_BITRATE 1000000 -#define FAST_PLUS_MAX_BITRATE 3400000 -#define HIGHSPEED_MAX_BITRATE 5000000 - #define I2C_PM_TIMEOUT 10 /* ms */ enum lpi2c_imx_mode { @@ -152,13 +146,13 @@ static void lpi2c_imx_set_mode(struct lpi2c_imx_struct *lpi2c_imx) unsigned int bitrate = lpi2c_imx->bitrate; enum lpi2c_imx_mode mode; - if (bitrate < STARDARD_MAX_BITRATE) + if (bitrate < I2C_MAX_FAST_MODE_FREQ) mode = STANDARD; - else if (bitrate < FAST_MAX_BITRATE) + else if (bitrate < I2C_MAX_FAST_MODE_PLUS_FREQ) mode = FAST; - else if (bitrate < FAST_PLUS_MAX_BITRATE) + else if (bitrate < I2C_MAX_HIGH_SPEED_MODE_FREQ) mode = FAST_PLUS; - else if (bitrate < HIGHSPEED_MAX_BITRATE) + else if (bitrate < I2C_MAX_ULTRA_FAST_MODE_FREQ) mode = HS; else mode = ULTRA_FAST; @@ -578,7 +572,7 @@ static int lpi2c_imx_probe(struct platform_device *pdev) ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &lpi2c_imx->bitrate); if (ret) - lpi2c_imx->bitrate = LPI2C_DEFAULT_RATE; + lpi2c_imx->bitrate = I2C_MAX_STANDARD_MODE_FREQ; ret = devm_request_irq(&pdev->dev, irq, lpi2c_imx_isr, 0, pdev->name, lpi2c_imx); diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index 775805616ba3..0ab5381aa012 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -50,9 +50,6 @@ /* This will be the driver name the kernel reports */ #define DRIVER_NAME "imx-i2c" -/* Default value */ -#define IMX_I2C_BIT_RATE 100000 /* 100kHz */ - /* * Enable DMA if transfer byte size is bigger than this threshold. * As the hardware request, it must bigger than 4 bytes.\ @@ -1201,7 +1198,7 @@ static int i2c_imx_probe(struct platform_device *pdev) goto rpm_disable; /* Set up clock divider */ - i2c_imx->bitrate = IMX_I2C_BIT_RATE; + i2c_imx->bitrate = I2C_MAX_STANDARD_MODE_FREQ; ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &i2c_imx->bitrate); if (ret < 0 && pdata && pdata->bitrate) diff --git a/drivers/i2c/busses/i2c-lpc2k.c b/drivers/i2c/busses/i2c-lpc2k.c index deea18b14add..13b0c12e2dba 100644 --- a/drivers/i2c/busses/i2c-lpc2k.c +++ b/drivers/i2c/busses/i2c-lpc2k.c @@ -396,7 +396,7 @@ static int i2c_lpc2k_probe(struct platform_device *pdev) ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &bus_clk_rate); if (ret) - bus_clk_rate = 100000; /* 100 kHz default clock rate */ + bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ; clkrate = clk_get_rate(i2c->clk); if (clkrate == 0) { @@ -407,9 +407,9 @@ static int i2c_lpc2k_probe(struct platform_device *pdev) /* Setup I2C dividers to generate clock with proper duty cycle */ clkrate = clkrate / bus_clk_rate; - if (bus_clk_rate <= 100000) + if (bus_clk_rate <= I2C_MAX_STANDARD_MODE_FREQ) scl_high = (clkrate * I2C_STD_MODE_DUTY) / 100; - else if (bus_clk_rate <= 400000) + else if (bus_clk_rate <= I2C_MAX_FAST_MODE_FREQ) scl_high = (clkrate * I2C_FAST_MODE_DUTY) / 100; else scl_high = (clkrate * I2C_FAST_MODE_PLUS_DUTY) / 100; diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 2152ec5f535c..0ca6c38a15eb 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -56,9 +56,6 @@ #define I2C_DMA_4G_MODE 0x0001 #define I2C_DEFAULT_CLK_DIV 5 -#define I2C_DEFAULT_SPEED 100000 /* hz */ -#define MAX_FS_MODE_SPEED 400000 -#define MAX_HS_MODE_SPEED 3400000 #define MAX_SAMPLE_CNT_DIV 8 #define MAX_STEP_CNT_DIV 64 #define MAX_HS_STEP_CNT_DIV 8 @@ -450,10 +447,10 @@ static int mtk_i2c_calculate_speed(struct mtk_i2c *i2c, unsigned int clk_src, unsigned int best_mul; unsigned int cnt_mul; - if (target_speed > MAX_HS_MODE_SPEED) - target_speed = MAX_HS_MODE_SPEED; + if (target_speed > I2C_MAX_FAST_MODE_PLUS_FREQ) + target_speed = I2C_MAX_FAST_MODE_PLUS_FREQ; - if (target_speed > MAX_FS_MODE_SPEED) + if (target_speed > I2C_MAX_FAST_MODE_FREQ) max_step_cnt = MAX_HS_STEP_CNT_DIV; else max_step_cnt = MAX_STEP_CNT_DIV; @@ -514,9 +511,9 @@ static int mtk_i2c_set_speed(struct mtk_i2c *i2c, unsigned int parent_clk) clk_src = parent_clk / i2c->clk_src_div; target_speed = i2c->speed_hz; - if (target_speed > MAX_FS_MODE_SPEED) { + if (target_speed > I2C_MAX_FAST_MODE_FREQ) { /* Set master code speed register */ - ret = mtk_i2c_calculate_speed(i2c, clk_src, MAX_FS_MODE_SPEED, + ret = mtk_i2c_calculate_speed(i2c, clk_src, I2C_MAX_FAST_MODE_FREQ, &l_step_cnt, &l_sample_cnt); if (ret < 0) return ret; @@ -581,7 +578,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, control_reg = mtk_i2c_readw(i2c, OFFSET_CONTROL) & ~(I2C_CONTROL_DIR_CHANGE | I2C_CONTROL_RS); - if ((i2c->speed_hz > MAX_FS_MODE_SPEED) || (left_num >= 1)) + if ((i2c->speed_hz > I2C_MAX_FAST_MODE_FREQ) || (left_num >= 1)) control_reg |= I2C_CONTROL_RS; if (i2c->op == I2C_MASTER_WRRD) @@ -590,7 +587,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, mtk_i2c_writew(i2c, control_reg, OFFSET_CONTROL); /* set start condition */ - if (i2c->speed_hz <= I2C_DEFAULT_SPEED) + if (i2c->speed_hz <= I2C_MAX_STANDARD_MODE_FREQ) mtk_i2c_writew(i2c, I2C_ST_START_CON, OFFSET_EXT_CONF); else mtk_i2c_writew(i2c, I2C_FS_START_CON, OFFSET_EXT_CONF); @@ -798,7 +795,7 @@ static int mtk_i2c_transfer(struct i2c_adapter *adap, } } - if (i2c->auto_restart && num >= 2 && i2c->speed_hz > MAX_FS_MODE_SPEED) + if (i2c->auto_restart && num >= 2 && i2c->speed_hz > I2C_MAX_FAST_MODE_FREQ) /* ignore the first restart irq after the master code, * otherwise the first transfer will be discarded. */ @@ -893,7 +890,7 @@ static int mtk_i2c_parse_dt(struct device_node *np, struct mtk_i2c *i2c) ret = of_property_read_u32(np, "clock-frequency", &i2c->speed_hz); if (ret < 0) - i2c->speed_hz = I2C_DEFAULT_SPEED; + i2c->speed_hz = I2C_MAX_STANDARD_MODE_FREQ; ret = of_property_read_u32(np, "clock-div", &i2c->clk_src_div); if (ret < 0) diff --git a/drivers/i2c/busses/i2c-mt7621.c b/drivers/i2c/busses/i2c-mt7621.c index 62df8379bc89..45fe4a7fe0c0 100644 --- a/drivers/i2c/busses/i2c-mt7621.c +++ b/drivers/i2c/busses/i2c-mt7621.c @@ -300,7 +300,7 @@ static int mtk_i2c_probe(struct platform_device *pdev) if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", &i2c->bus_freq)) - i2c->bus_freq = 100000; + i2c->bus_freq = I2C_MAX_STANDARD_MODE_FREQ; if (i2c->bus_freq == 0) { dev_warn(i2c->dev, "clock-frequency 0 not supported\n"); diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index febb7c7ea72b..9b8f1d8552ea 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -810,7 +810,7 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data, tclk = clk_get_rate(drv_data->clk); if (of_property_read_u32(np, "clock-frequency", &bus_freq)) - bus_freq = 100000; /* 100kHz by default */ + bus_freq = I2C_MAX_STANDARD_MODE_FREQ; /* 100kHz by default */ if (of_device_is_compatible(np, "allwinner,sun4i-a10-i2c") || of_device_is_compatible(np, "allwinner,sun6i-a31-i2c")) @@ -846,14 +846,14 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data, if (of_device_is_compatible(np, "marvell,mv78230-i2c")) { drv_data->offload_enabled = true; /* The delay is only needed in standard mode (100kHz) */ - if (bus_freq <= 100000) + if (bus_freq <= I2C_MAX_STANDARD_MODE_FREQ) drv_data->errata_delay = true; } if (of_device_is_compatible(np, "marvell,mv78230-a0-i2c")) { drv_data->offload_enabled = false; /* The delay is only needed in standard mode (100kHz) */ - if (bus_freq <= 100000) + if (bus_freq <= I2C_MAX_STANDARD_MODE_FREQ) drv_data->errata_delay = true; } diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c index 03f5eee9883a..9587347447f0 100644 --- a/drivers/i2c/busses/i2c-mxs.c +++ b/drivers/i2c/busses/i2c-mxs.c @@ -731,7 +731,7 @@ static void mxs_i2c_derive_timing(struct mxs_i2c_dev *i2c, uint32_t speed) * This is compensated for by subtracting the respective constants * from the values written to the timing registers. */ - if (speed > 100000) { + if (speed > I2C_MAX_STANDARD_MODE_FREQ) { /* fast mode */ low_count = DIV_ROUND_CLOSEST(divider * 13, (13 + 6)); high_count = DIV_ROUND_CLOSEST(divider * 6, (13 + 6)); @@ -769,7 +769,7 @@ static int mxs_i2c_get_ofdata(struct mxs_i2c_dev *i2c) ret = of_property_read_u32(node, "clock-frequency", &speed); if (ret) { dev_warn(dev, "No I2C speed selected, using 100kHz\n"); - speed = 100000; + speed = I2C_MAX_STANDARD_MODE_FREQ; } mxs_i2c_derive_timing(i2c, speed); diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index 01a7d72e5511..e1e8d4ef9aa7 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -396,7 +396,7 @@ static void setup_i2c_controller(struct nmk_i2c_dev *dev) * 2 whereas it is 3 for fast and fastplus mode of * operation. TODO - high speed support. */ - div = (dev->clk_freq > 100000) ? 3 : 2; + div = (dev->clk_freq > I2C_MAX_STANDARD_MODE_FREQ) ? 3 : 2; /* * generate the mask for baud rate counters. The controller @@ -420,7 +420,7 @@ static void setup_i2c_controller(struct nmk_i2c_dev *dev) if (dev->sm > I2C_FREQ_MODE_FAST) { dev_err(&dev->adev->dev, "do not support this mode defaulting to std. mode\n"); - brcr2 = i2c_clk/(100000 * 2) & 0xffff; + brcr2 = i2c_clk / (I2C_MAX_STANDARD_MODE_FREQ * 2) & 0xffff; writel((brcr1 | brcr2), dev->virtbase + I2C_BRCR); writel(I2C_FREQ_MODE_STANDARD << 4, dev->virtbase + I2C_CR); @@ -949,10 +949,10 @@ static void nmk_i2c_of_probe(struct device_node *np, { /* Default to 100 kHz if no frequency is given in the node */ if (of_property_read_u32(np, "clock-frequency", &nmk->clk_freq)) - nmk->clk_freq = 100000; + nmk->clk_freq = I2C_MAX_STANDARD_MODE_FREQ; /* This driver only supports 'standard' and 'fast' modes of operation. */ - if (nmk->clk_freq <= 100000) + if (nmk->clk_freq <= I2C_MAX_STANDARD_MODE_FREQ) nmk->sm = I2C_FREQ_MODE_STANDARD; else nmk->sm = I2C_FREQ_MODE_FAST; diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 47d994a7c473..71b4637c86b7 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -1380,7 +1380,7 @@ omap_i2c_probe(struct platform_device *pdev) match = of_match_device(of_match_ptr(omap_i2c_of_match), &pdev->dev); if (match) { - u32 freq = 100000; /* default to 100000 Hz */ + u32 freq = I2C_MAX_STANDARD_MODE_FREQ; pdata = match->data; omap->flags = pdata->flags; diff --git a/drivers/i2c/busses/i2c-owl.c b/drivers/i2c/busses/i2c-owl.c index b6b5a495118b..3ab8be62c581 100644 --- a/drivers/i2c/busses/i2c-owl.c +++ b/drivers/i2c/busses/i2c-owl.c @@ -87,9 +87,6 @@ #define OWL_I2C_MAX_RETRIES 50 -#define OWL_I2C_DEF_SPEED_HZ 100000 -#define OWL_I2C_MAX_SPEED_HZ 400000 - struct owl_i2c_dev { struct i2c_adapter adap; struct i2c_msg *msg; @@ -419,11 +416,11 @@ static int owl_i2c_probe(struct platform_device *pdev) if (of_property_read_u32(dev->of_node, "clock-frequency", &i2c_dev->bus_freq)) - i2c_dev->bus_freq = OWL_I2C_DEF_SPEED_HZ; + i2c_dev->bus_freq = I2C_MAX_STANDARD_MODE_FREQ; /* We support only frequencies of 100k and 400k for now */ - if (i2c_dev->bus_freq != OWL_I2C_DEF_SPEED_HZ && - i2c_dev->bus_freq != OWL_I2C_MAX_SPEED_HZ) { + if (i2c_dev->bus_freq != I2C_MAX_STANDARD_MODE_FREQ && + i2c_dev->bus_freq != I2C_MAX_FAST_MODE_FREQ) { dev_err(dev, "invalid clock-frequency %d\n", i2c_dev->bus_freq); return -EINVAL; } diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c index 2d7dabe12723..748872a9b0fc 100644 --- a/drivers/i2c/busses/i2c-qup.c +++ b/drivers/i2c/busses/i2c-qup.c @@ -136,13 +136,8 @@ */ #define TOUT_MIN 2 -/* I2C Frequency Modes */ -#define I2C_STANDARD_FREQ 100000 -#define I2C_FAST_MODE_FREQ 400000 -#define I2C_FAST_MODE_PLUS_FREQ 1000000 - /* Default values. Use these if FW query fails */ -#define DEFAULT_CLK_FREQ I2C_STANDARD_FREQ +#define DEFAULT_CLK_FREQ I2C_MAX_STANDARD_MODE_FREQ #define DEFAULT_SRC_CLK 20000000 /* @@ -1756,7 +1751,7 @@ static int qup_i2c_probe(struct platform_device *pdev) nodma: /* We support frequencies up to FAST Mode Plus (1MHz) */ - if (!clk_freq || clk_freq > I2C_FAST_MODE_PLUS_FREQ) { + if (!clk_freq || clk_freq > I2C_MAX_FAST_MODE_PLUS_FREQ) { dev_err(qup->dev, "clock frequency not supported %d\n", clk_freq); return -EINVAL; @@ -1861,7 +1856,7 @@ nodma: qup->in_fifo_sz = qup->in_blk_sz * (2 << size); hs_div = 3; - if (clk_freq <= I2C_STANDARD_FREQ) { + if (clk_freq <= I2C_MAX_STANDARD_MODE_FREQ) { fs_div = ((src_clk_freq / clk_freq) / 2) - 3; qup->clk_ctl = (hs_div << 8) | (fs_div & 0xff); } else { diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index 800414886f6b..4eccc0f69861 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -287,10 +287,10 @@ static int riic_init_hw(struct riic_dev *riic, struct i2c_timings *t) pm_runtime_get_sync(riic->adapter.dev.parent); - if (t->bus_freq_hz > 400000) { + if (t->bus_freq_hz > I2C_MAX_FAST_MODE_FREQ) { dev_err(&riic->adapter.dev, - "unsupported bus speed (%dHz). 400000 max\n", - t->bus_freq_hz); + "unsupported bus speed (%dHz). %d max\n", + t->bus_freq_hz, I2C_MAX_FAST_MODE_FREQ); ret = -EINVAL; goto out; } diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index 1a33007b03e9..73272d4296bb 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -539,9 +539,9 @@ out: */ static const struct i2c_spec_values *rk3x_i2c_get_spec(unsigned int speed) { - if (speed <= 100000) + if (speed <= I2C_MAX_STANDARD_MODE_FREQ) return &standard_mode_spec; - else if (speed <= 400000) + else if (speed <= I2C_MAX_FAST_MODE_FREQ) return &fast_mode_spec; else return &fast_mode_plus_spec; @@ -578,8 +578,8 @@ static int rk3x_i2c_v0_calc_timings(unsigned long clk_rate, int ret = 0; /* Only support standard-mode and fast-mode */ - if (WARN_ON(t->bus_freq_hz > 400000)) - t->bus_freq_hz = 400000; + if (WARN_ON(t->bus_freq_hz > I2C_MAX_FAST_MODE_FREQ)) + t->bus_freq_hz = I2C_MAX_FAST_MODE_FREQ; /* prevent scl_rate_khz from becoming 0 */ if (WARN_ON(t->bus_freq_hz < 1000)) @@ -758,8 +758,8 @@ static int rk3x_i2c_v1_calc_timings(unsigned long clk_rate, int ret = 0; /* Support standard-mode, fast-mode and fast-mode plus */ - if (WARN_ON(t->bus_freq_hz > 1000000)) - t->bus_freq_hz = 1000000; + if (WARN_ON(t->bus_freq_hz > I2C_MAX_FAST_MODE_PLUS_FREQ)) + t->bus_freq_hz = I2C_MAX_FAST_MODE_PLUS_FREQ; /* prevent scl_rate_khz from becoming 0 */ if (WARN_ON(t->bus_freq_hz < 1000)) diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index c98ef4c4a0c9..5a5638e1daa1 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -835,11 +835,11 @@ static int s3c24xx_i2c_clockrate(struct s3c24xx_i2c *i2c, unsigned int *got) int freq; i2c->clkrate = clkin; - clkin /= 1000; /* clkin now in KHz */ + clkin /= 1000; /* clkin now in KHz */ dev_dbg(i2c->dev, "pdata desired frequency %lu\n", pdata->frequency); - target_frequency = pdata->frequency ? pdata->frequency : 100000; + target_frequency = pdata->frequency ?: I2C_MAX_STANDARD_MODE_FREQ; target_frequency /= 1000; /* Target frequency now in KHz */ diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c index 82b3b795e0bd..d83ca4028fa0 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -145,9 +145,6 @@ struct sh_mobile_dt_config { #define IIC_FLAG_HAS_ICIC67 (1 << 0) -#define STANDARD_MODE 100000 -#define FAST_MODE 400000 - /* Register offsets */ #define ICDR 0x00 #define ICCR 0x04 @@ -270,11 +267,11 @@ static int sh_mobile_i2c_init(struct sh_mobile_i2c_data *pd) i2c_clk_khz = clk_get_rate(pd->clk) / 1000 / pd->clks_per_count; - if (pd->bus_speed == STANDARD_MODE) { + if (pd->bus_speed == I2C_MAX_STANDARD_MODE_FREQ) { tLOW = 47; /* tLOW = 4.7 us */ tHIGH = 40; /* tHD;STA = tHIGH = 4.0 us */ tf = 3; /* tf = 0.3 us */ - } else if (pd->bus_speed == FAST_MODE) { + } else if (pd->bus_speed == I2C_MAX_FAST_MODE_FREQ) { tLOW = 13; /* tLOW = 1.3 us */ tHIGH = 6; /* tHD;STA = tHIGH = 0.6 us */ tf = 3; /* tf = 0.3 us */ @@ -851,7 +848,7 @@ static int sh_mobile_i2c_probe(struct platform_device *dev) return PTR_ERR(pd->reg); ret = of_property_read_u32(dev->dev.of_node, "clock-frequency", &bus_speed); - pd->bus_speed = (ret || !bus_speed) ? STANDARD_MODE : bus_speed; + pd->bus_speed = (ret || !bus_speed) ? I2C_MAX_STANDARD_MODE_FREQ : bus_speed; pd->clks_per_count = 1; /* Newer variants come with two new bits in ICIC */ diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c index fb7a046b3226..a459e00c6851 100644 --- a/drivers/i2c/busses/i2c-sirf.c +++ b/drivers/i2c/busses/i2c-sirf.c @@ -62,7 +62,6 @@ #define SIRFSOC_I2C_STOP BIT(6) #define SIRFSOC_I2C_START BIT(7) -#define SIRFSOC_I2C_DEFAULT_SPEED 100000 #define SIRFSOC_I2C_ERR_NOACK 1 #define SIRFSOC_I2C_ERR_TIMEOUT 2 @@ -353,7 +352,7 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev) err = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &bitrate); if (err < 0) - bitrate = SIRFSOC_I2C_DEFAULT_SPEED; + bitrate = I2C_MAX_STANDARD_MODE_FREQ; /* * Due to some hardware design issues, we need to tune the formula. diff --git a/drivers/i2c/busses/i2c-sprd.c b/drivers/i2c/busses/i2c-sprd.c index b432e7580458..123a42bfe3b1 100644 --- a/drivers/i2c/busses/i2c-sprd.c +++ b/drivers/i2c/busses/i2c-sprd.c @@ -337,9 +337,9 @@ static void sprd_i2c_set_clk(struct sprd_i2c *i2c_dev, u32 freq) writel(div1, i2c_dev->base + ADDR_DVD1); /* Start hold timing = hold time(us) * source clock */ - if (freq == 400000) + if (freq == I2C_MAX_FAST_MODE_FREQ) writel((6 * apb_clk) / 10000000, i2c_dev->base + ADDR_STA0_DVD); - else if (freq == 100000) + else if (freq == I2C_MAX_STANDARD_MODE_FREQ) writel((4 * apb_clk) / 1000000, i2c_dev->base + ADDR_STA0_DVD); } @@ -502,7 +502,7 @@ static int sprd_i2c_probe(struct platform_device *pdev) snprintf(i2c_dev->adap.name, sizeof(i2c_dev->adap.name), "%s", "sprd-i2c"); - i2c_dev->bus_freq = 100000; + i2c_dev->bus_freq = I2C_MAX_STANDARD_MODE_FREQ; i2c_dev->adap.owner = THIS_MODULE; i2c_dev->dev = dev; i2c_dev->adap.retries = 3; @@ -516,7 +516,8 @@ static int sprd_i2c_probe(struct platform_device *pdev) i2c_dev->bus_freq = prop; /* We only support 100k and 400k now, otherwise will return error. */ - if (i2c_dev->bus_freq != 100000 && i2c_dev->bus_freq != 400000) + if (i2c_dev->bus_freq != I2C_MAX_STANDARD_MODE_FREQ && + i2c_dev->bus_freq != I2C_MAX_FAST_MODE_FREQ) return -EINVAL; ret = sprd_i2c_clk_init(i2c_dev); diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c index 54e1fc8a495e..49794e8ec839 100644 --- a/drivers/i2c/busses/i2c-st.c +++ b/drivers/i2c/busses/i2c-st.c @@ -213,7 +213,7 @@ static inline void st_i2c_clr_bits(void __iomem *reg, u32 mask) */ static struct st_i2c_timings i2c_timings[] = { [I2C_MODE_STANDARD] = { - .rate = 100000, + .rate = I2C_MAX_STANDARD_MODE_FREQ, .rep_start_hold = 4400, .rep_start_setup = 5170, .start_hold = 4400, @@ -222,7 +222,7 @@ static struct st_i2c_timings i2c_timings[] = { .bus_free_time = 5170, }, [I2C_MODE_FAST] = { - .rate = 400000, + .rate = I2C_MAX_FAST_MODE_FREQ, .rep_start_hold = 660, .rep_start_setup = 660, .start_hold = 660, @@ -835,7 +835,7 @@ static int st_i2c_probe(struct platform_device *pdev) i2c_dev->mode = I2C_MODE_STANDARD; ret = of_property_read_u32(np, "clock-frequency", &clk_rate); - if ((!ret) && (clk_rate == 400000)) + if (!ret && (clk_rate == I2C_MAX_FAST_MODE_FREQ)) i2c_dev->mode = I2C_MODE_FAST; i2c_dev->dev = &pdev->dev; diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c index ba600d77a3f8..d6a69dfcac3f 100644 --- a/drivers/i2c/busses/i2c-stm32f4.c +++ b/drivers/i2c/busses/i2c-stm32f4.c @@ -232,10 +232,10 @@ static void stm32f4_i2c_set_speed_mode(struct stm32f4_i2c_dev *i2c_dev) * In standard mode: * t_scl_high = t_scl_low = CCR * I2C parent clk period * So to reach 100 kHz, we have: - * CCR = I2C parent rate / 100 kHz >> 1 + * CCR = I2C parent rate / (100 kHz * 2) * * For example with parent rate = 2 MHz: - * CCR = 2000000 / (100000 << 1) = 10 + * CCR = 2000000 / (100000 * 2) = 10 * t_scl_high = t_scl_low = 10 * (1 / 2000000) = 5000 ns * t_scl_high + t_scl_low = 10000 ns so 100 kHz is reached * @@ -243,7 +243,7 @@ static void stm32f4_i2c_set_speed_mode(struct stm32f4_i2c_dev *i2c_dev) * parent rate is not higher than 46 MHz . As a result val * is at most 8 bits wide and so fits into the CCR bits [11:0]. */ - val = i2c_dev->parent_rate / (100000 << 1); + val = i2c_dev->parent_rate / (I2C_MAX_STANDARD_MODE_FREQ * 2); } else { /* * In fast mode, we compute CCR with duty = 0 as with low @@ -263,7 +263,7 @@ static void stm32f4_i2c_set_speed_mode(struct stm32f4_i2c_dev *i2c_dev) * parent rate is not higher than 46 MHz . As a result val * is at most 6 bits wide and so fits into the CCR bits [11:0]. */ - val = DIV_ROUND_UP(i2c_dev->parent_rate, 400000 * 3); + val = DIV_ROUND_UP(i2c_dev->parent_rate, I2C_MAX_FAST_MODE_FREQ * 3); /* Select Fast mode */ ccr |= STM32F4_I2C_CCR_FS; @@ -807,7 +807,7 @@ static int stm32f4_i2c_probe(struct platform_device *pdev) i2c_dev->speed = STM32_I2C_SPEED_STANDARD; ret = of_property_read_u32(np, "clock-frequency", &clk_rate); - if (!ret && clk_rate >= 400000) + if (!ret && clk_rate >= I2C_MAX_FAST_MODE_FREQ) i2c_dev->speed = STM32_I2C_SPEED_FAST; i2c_dev->dev = &pdev->dev; diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c index 42e0a53e7fa4..ba6b60caa45e 100644 --- a/drivers/i2c/busses/i2c-stu300.c +++ b/drivers/i2c/busses/i2c-stu300.c @@ -132,7 +132,7 @@ enum stu300_error { #define NUM_ADDR_RESEND_ATTEMPTS 12 /* I2C clock speed, in Hz 0-400kHz*/ -static unsigned int scl_frequency = 100000; +static unsigned int scl_frequency = I2C_MAX_STANDARD_MODE_FREQ; module_param(scl_frequency, uint, 0644); /** @@ -497,7 +497,7 @@ static int stu300_set_clk(struct stu300_dev *dev, unsigned long clkrate) dev_dbg(&dev->pdev->dev, "Clock rate %lu Hz, I2C bus speed %d Hz " "virtbase %p\n", clkrate, dev->speed, dev->virtbase); - if (dev->speed > 100000) + if (dev->speed > I2C_MAX_STANDARD_MODE_FREQ) /* Fast Mode I2C */ val = ((clkrate/dev->speed) - 9)/3 + 1; else @@ -518,7 +518,7 @@ static int stu300_set_clk(struct stu300_dev *dev, unsigned long clkrate) return -EINVAL; } - if (dev->speed > 100000) { + if (dev->speed > I2C_MAX_STANDARD_MODE_FREQ) { /* CC6..CC0 */ stu300_wr8((val & I2C_CCR_CC_MASK) | I2C_CCR_FMSM, dev->virtbase + I2C_CCR); diff --git a/drivers/i2c/busses/i2c-sun6i-p2wi.c b/drivers/i2c/busses/i2c-sun6i-p2wi.c index 7c07ce116e38..e5293f0b3318 100644 --- a/drivers/i2c/busses/i2c-sun6i-p2wi.c +++ b/drivers/i2c/busses/i2c-sun6i-p2wi.c @@ -186,7 +186,7 @@ static int p2wi_probe(struct platform_device *pdev) struct device_node *np = dev->of_node; struct device_node *childnp; unsigned long parent_clk_freq; - u32 clk_freq = 100000; + u32 clk_freq = I2C_MAX_STANDARD_MODE_FREQ; struct resource *r; struct p2wi *p2wi; u32 slave_addr; diff --git a/drivers/i2c/busses/i2c-synquacer.c b/drivers/i2c/busses/i2c-synquacer.c index 86026798b4f7..9099d0a67ace 100644 --- a/drivers/i2c/busses/i2c-synquacer.c +++ b/drivers/i2c/busses/i2c-synquacer.c @@ -67,10 +67,10 @@ /* STANDARD MODE frequency */ #define SYNQUACER_I2C_CLK_MASTER_STD(rate) \ - DIV_ROUND_UP(DIV_ROUND_UP((rate), 100000) - 2, 2) + DIV_ROUND_UP(DIV_ROUND_UP((rate), I2C_MAX_STANDARD_MODE_FREQ) - 2, 2) /* FAST MODE frequency */ #define SYNQUACER_I2C_CLK_MASTER_FAST(rate) \ - DIV_ROUND_UP((DIV_ROUND_UP((rate), 400000) - 2) * 2, 3) + DIV_ROUND_UP((DIV_ROUND_UP((rate), I2C_MAX_FAST_MODE_FREQ) - 2) * 2, 3) /* (clkrate <= 18000000) */ /* calculate the value of CS bits in CCR register on standard mode */ @@ -602,7 +602,7 @@ static int synquacer_i2c_probe(struct platform_device *pdev) i2c->adapter.nr = pdev->id; init_completion(&i2c->completion); - if (bus_speed < 400000) + if (bus_speed < I2C_MAX_FAST_MODE_FREQ) i2c->speed_khz = SYNQUACER_I2C_SPEED_SM; else i2c->speed_khz = SYNQUACER_I2C_SPEED_FM; diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index cbc2ad49043e..4c4d17ddc96b 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -123,10 +123,6 @@ #define I2C_THIGH_SHIFT 8 #define I2C_INTERFACE_TIMING_1 0x98 -#define I2C_STANDARD_MODE 100000 -#define I2C_FAST_MODE 400000 -#define I2C_FAST_PLUS_MODE 1000000 - /* Packet header size in bytes */ #define I2C_PACKET_HEADER_SIZE 12 @@ -737,8 +733,8 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev, bool clk_reinit) I2C_CLK_DIVISOR_STD_FAST_MODE_SHIFT; i2c_writel(i2c_dev, clk_divisor, I2C_CLK_DIVISOR); - if (i2c_dev->bus_clk_rate > I2C_STANDARD_MODE && - i2c_dev->bus_clk_rate <= I2C_FAST_PLUS_MODE) { + if (i2c_dev->bus_clk_rate > I2C_MAX_STANDARD_MODE_FREQ && + i2c_dev->bus_clk_rate <= I2C_MAX_FAST_MODE_PLUS_FREQ) { tlow = i2c_dev->hw->tlow_fast_fastplus_mode; thigh = i2c_dev->hw->thigh_fast_fastplus_mode; tsu_thd = i2c_dev->hw->setup_hold_time_fast_fast_plus_mode; @@ -1341,7 +1337,7 @@ static void tegra_i2c_parse_dt(struct tegra_i2c_dev *i2c_dev) ret = of_property_read_u32(np, "clock-frequency", &i2c_dev->bus_clk_rate); if (ret) - i2c_dev->bus_clk_rate = 100000; /* default clock rate */ + i2c_dev->bus_clk_rate = I2C_MAX_STANDARD_MODE_FREQ; /* default clock rate */ multi_mode = of_property_read_bool(np, "multi-master"); i2c_dev->is_multimaster_mode = multi_mode; @@ -1640,12 +1636,12 @@ static int tegra_i2c_probe(struct platform_device *pdev) } } - if (i2c_dev->bus_clk_rate > I2C_FAST_MODE && - i2c_dev->bus_clk_rate <= I2C_FAST_PLUS_MODE) + if (i2c_dev->bus_clk_rate > I2C_MAX_FAST_MODE_FREQ && + i2c_dev->bus_clk_rate <= I2C_MAX_FAST_MODE_PLUS_FREQ) i2c_dev->clk_divisor_non_hs_mode = i2c_dev->hw->clk_divisor_fast_plus_mode; - else if (i2c_dev->bus_clk_rate > I2C_STANDARD_MODE && - i2c_dev->bus_clk_rate <= I2C_FAST_MODE) + else if (i2c_dev->bus_clk_rate > I2C_MAX_STANDARD_MODE_FREQ && + i2c_dev->bus_clk_rate <= I2C_MAX_FAST_MODE_FREQ) i2c_dev->clk_divisor_non_hs_mode = i2c_dev->hw->clk_divisor_fast_mode; else diff --git a/drivers/i2c/busses/i2c-thunderx-pcidrv.c b/drivers/i2c/busses/i2c-thunderx-pcidrv.c index 7d3b9d66ad36..12c90aa0900e 100644 --- a/drivers/i2c/busses/i2c-thunderx-pcidrv.c +++ b/drivers/i2c/busses/i2c-thunderx-pcidrv.c @@ -183,7 +183,7 @@ static int thunder_i2c_probe_pci(struct pci_dev *pdev, thunder_i2c_clock_enable(dev, i2c); ret = device_property_read_u32(dev, "clock-frequency", &i2c->twsi_freq); if (ret) - i2c->twsi_freq = 100000; + i2c->twsi_freq = I2C_MAX_STANDARD_MODE_FREQ; init_waitqueue_head(&i2c->queue); diff --git a/drivers/i2c/busses/i2c-uniphier-f.c b/drivers/i2c/busses/i2c-uniphier-f.c index 4241aac79e7e..2b258d54d68c 100644 --- a/drivers/i2c/busses/i2c-uniphier-f.c +++ b/drivers/i2c/busses/i2c-uniphier-f.c @@ -73,8 +73,6 @@ #define UNIPHIER_FI2C_BYTE_WISE BIT(3) #define UNIPHIER_FI2C_DEFER_STOP_COMP BIT(4) -#define UNIPHIER_FI2C_DEFAULT_SPEED 100000 -#define UNIPHIER_FI2C_MAX_SPEED 400000 #define UNIPHIER_FI2C_FIFO_SIZE 8 struct uniphier_fi2c_priv { @@ -537,9 +535,9 @@ static int uniphier_fi2c_probe(struct platform_device *pdev) } if (of_property_read_u32(dev->of_node, "clock-frequency", &bus_speed)) - bus_speed = UNIPHIER_FI2C_DEFAULT_SPEED; + bus_speed = I2C_MAX_STANDARD_MODE_FREQ; - if (!bus_speed || bus_speed > UNIPHIER_FI2C_MAX_SPEED) { + if (!bus_speed || bus_speed > I2C_MAX_FAST_MODE_FREQ) { dev_err(dev, "invalid clock-frequency %d\n", bus_speed); return -EINVAL; } diff --git a/drivers/i2c/busses/i2c-uniphier.c b/drivers/i2c/busses/i2c-uniphier.c index 0270090c0360..668b1fa2b0ef 100644 --- a/drivers/i2c/busses/i2c-uniphier.c +++ b/drivers/i2c/busses/i2c-uniphier.c @@ -35,9 +35,6 @@ #define UNIPHIER_I2C_NOISE 0x1c /* noise filter control */ #define UNIPHIER_I2C_SETUP 0x20 /* setup time control */ -#define UNIPHIER_I2C_DEFAULT_SPEED 100000 -#define UNIPHIER_I2C_MAX_SPEED 400000 - struct uniphier_i2c_priv { struct completion comp; struct i2c_adapter adap; @@ -333,9 +330,9 @@ static int uniphier_i2c_probe(struct platform_device *pdev) } if (of_property_read_u32(dev->of_node, "clock-frequency", &bus_speed)) - bus_speed = UNIPHIER_I2C_DEFAULT_SPEED; + bus_speed = I2C_MAX_STANDARD_MODE_FREQ; - if (!bus_speed || bus_speed > UNIPHIER_I2C_MAX_SPEED) { + if (!bus_speed || bus_speed > I2C_MAX_FAST_MODE_FREQ) { dev_err(dev, "invalid clock-frequency %d\n", bus_speed); return -EINVAL; } diff --git a/drivers/i2c/busses/i2c-wmt.c b/drivers/i2c/busses/i2c-wmt.c index 524017f7034e..88f5aafdce5b 100644 --- a/drivers/i2c/busses/i2c-wmt.c +++ b/drivers/i2c/busses/i2c-wmt.c @@ -399,7 +399,7 @@ static int wmt_i2c_probe(struct platform_device *pdev) i2c_dev->mode = I2C_MODE_STANDARD; err = of_property_read_u32(np, "clock-frequency", &clk_rate); - if ((!err) && (clk_rate == 400000)) + if (!err && (clk_rate == I2C_MAX_FAST_MODE_FREQ)) i2c_dev->mode = I2C_MODE_FAST; i2c_dev->dev = &pdev->dev; diff --git a/drivers/i2c/busses/i2c-xlp9xx.c b/drivers/i2c/busses/i2c-xlp9xx.c index 823945bc3249..391c878a7cdc 100644 --- a/drivers/i2c/busses/i2c-xlp9xx.c +++ b/drivers/i2c/busses/i2c-xlp9xx.c @@ -71,8 +71,6 @@ #define XLP9XX_I2C_SLAVEADDR_ADDR_SHIFT 1 #define XLP9XX_I2C_IP_CLK_FREQ 133000000UL -#define XLP9XX_I2C_DEFAULT_FREQ 100000 -#define XLP9XX_I2C_HIGH_FREQ 400000 #define XLP9XX_I2C_FIFO_SIZE 0x80U #define XLP9XX_I2C_TIMEOUT_MS 1000 #define XLP9XX_I2C_BUSY_TIMEOUT 50 @@ -476,12 +474,12 @@ static int xlp9xx_i2c_get_frequency(struct platform_device *pdev, err = device_property_read_u32(&pdev->dev, "clock-frequency", &freq); if (err) { - freq = XLP9XX_I2C_DEFAULT_FREQ; + freq = I2C_MAX_STANDARD_MODE_FREQ; dev_dbg(&pdev->dev, "using default frequency %u\n", freq); - } else if (freq == 0 || freq > XLP9XX_I2C_HIGH_FREQ) { + } else if (freq == 0 || freq > I2C_MAX_FAST_MODE_FREQ) { dev_warn(&pdev->dev, "invalid frequency %u, using default\n", freq); - freq = XLP9XX_I2C_DEFAULT_FREQ; + freq = I2C_MAX_STANDARD_MODE_FREQ; } priv->clk_hz = freq; diff --git a/drivers/i2c/busses/i2c-xlr.c b/drivers/i2c/busses/i2c-xlr.c index 34cd4b308540..282f161a8b08 100644 --- a/drivers/i2c/busses/i2c-xlr.c +++ b/drivers/i2c/busses/i2c-xlr.c @@ -404,7 +404,7 @@ static int xlr_i2c_probe(struct platform_device *pdev) if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", &busfreq)) - busfreq = 100000; + busfreq = I2C_MAX_STANDARD_MODE_FREQ; clk = devm_clk_get(&pdev->dev, NULL); if (!IS_ERR(clk)) { |