diff options
Diffstat (limited to 'drivers/i2c/tegra_i2c.c')
| -rw-r--r-- | drivers/i2c/tegra_i2c.c | 68 |
1 files changed, 11 insertions, 57 deletions
diff --git a/drivers/i2c/tegra_i2c.c b/drivers/i2c/tegra_i2c.c index 0dbcc5a1cf..898f12a946 100644 --- a/drivers/i2c/tegra_i2c.c +++ b/drivers/i2c/tegra_i2c.c @@ -12,27 +12,15 @@ #include <fdtdec.h> #include <i2c.h> #include <asm/io.h> -#ifdef CONFIG_TEGRA186 #include <clk.h> #include <reset.h> -#else +#ifndef CONFIG_TEGRA186 #include <asm/arch/clock.h> #include <asm/arch/funcmux.h> -#include <asm/arch/pinmux.h> -#include <asm/arch-tegra/clk_rst.h> #endif #include <asm/arch/gpio.h> #include <asm/arch-tegra/tegra_i2c.h> -/* - * FIXME: TODO: This driver contains a number of ifdef CONFIG_TEGRA186 that - * should not be present. These are needed because newer Tegra SoCs support - * only the standard clock/reset APIs, whereas older Tegra SoCs support only - * a custom Tegra-specific API. ASAP the older Tegra SoCs' code should be - * fixed to implement the standard APIs, and all drivers converted to solely - * use the new standard APIs, with no ifdefs. - */ - DECLARE_GLOBAL_DATA_PTR; enum i2c_type { @@ -44,12 +32,8 @@ enum i2c_type { /* Information about i2c controller */ struct i2c_bus { int id; -#ifdef CONFIG_TEGRA186 struct reset_ctl reset_ctl; struct clk clk; -#else - enum periph_id periph_id; -#endif int speed; int pinmux_config; struct i2c_control *control; @@ -81,20 +65,15 @@ static void set_packet_mode(struct i2c_bus *i2c_bus) static void i2c_reset_controller(struct i2c_bus *i2c_bus) { /* Reset I2C controller. */ -#ifdef CONFIG_TEGRA186 reset_assert(&i2c_bus->reset_ctl); udelay(1); reset_deassert(&i2c_bus->reset_ctl); udelay(1); -#else - reset_periph(i2c_bus->periph_id, 1); -#endif /* re-program config register to packet mode */ set_packet_mode(i2c_bus); } -#ifdef CONFIG_TEGRA186 static int i2c_init_clock(struct i2c_bus *i2c_bus, unsigned rate) { int ret; @@ -114,7 +93,6 @@ static int i2c_init_clock(struct i2c_bus *i2c_bus, unsigned rate) return 0; } -#endif static void i2c_init_controller(struct i2c_bus *i2c_bus) { @@ -126,12 +104,7 @@ static void i2c_init_controller(struct i2c_bus *i2c_bus) * here, in section 23.3.1, but in fact we seem to need a factor of * 16 to get the right frequency. */ -#ifdef CONFIG_TEGRA186 i2c_init_clock(i2c_bus, i2c_bus->speed * 2 * 8); -#else - clock_start_periph_pll(i2c_bus->periph_id, CLOCK_ID_PERIPH, - i2c_bus->speed * 2 * 8); -#endif if (i2c_bus->type == TYPE_114) { /* @@ -151,12 +124,7 @@ static void i2c_init_controller(struct i2c_bus *i2c_bus) debug("%s: CLK_DIV_STD_FAST_MODE setting = %d\n", __func__, clk_div_stdfst_mode); -#ifdef CONFIG_TEGRA186 i2c_init_clock(i2c_bus, rate); -#else - clock_start_periph_pll(i2c_bus->periph_id, CLOCK_ID_PERIPH, - rate); -#endif } /* Reset I2C controller. */ @@ -170,7 +138,7 @@ static void i2c_init_controller(struct i2c_bus *i2c_bus) } #ifndef CONFIG_TEGRA186 - funcmux_select(i2c_bus->periph_id, i2c_bus->pinmux_config); + funcmux_select(i2c_bus->clk.id, i2c_bus->pinmux_config); #endif } @@ -392,23 +360,13 @@ static int tegra_i2c_set_bus_speed(struct udevice *dev, unsigned int speed) static int tegra_i2c_probe(struct udevice *dev) { struct i2c_bus *i2c_bus = dev_get_priv(dev); -#ifdef CONFIG_TEGRA186 int ret; -#else - const void *blob = gd->fdt_blob; - int node = dev->of_offset; -#endif bool is_dvc; i2c_bus->id = dev->seq; i2c_bus->type = dev_get_driver_data(dev); i2c_bus->regs = (struct i2c_ctlr *)dev_get_addr(dev); - /* - * We don't have a binding for pinmux yet. Leave it out for now. So - * far no one needs anything other than the default. - */ -#ifdef CONFIG_TEGRA186 ret = reset_get_by_name(dev, "i2c", &i2c_bus->reset_ctl); if (ret) { error("reset_get_by_name() failed: %d\n", ret); @@ -419,9 +377,13 @@ static int tegra_i2c_probe(struct udevice *dev) error("clk_get_by_name() failed: %d\n", ret); return ret; } -#else + +#ifndef CONFIG_TEGRA186 + /* + * We don't have a binding for pinmux yet. Leave it out for now. So + * far no one needs anything other than the default. + */ i2c_bus->pinmux_config = FUNCMUX_DEFAULT; - i2c_bus->periph_id = clock_decode_periph_id(blob, node); /* * We can't specify the pinmux config in the fdt, so I2C2 will not @@ -429,11 +391,9 @@ static int tegra_i2c_probe(struct udevice *dev) * You could add in this little hack if you need to use it. * The correct solution is a pinmux binding in the fdt. * - * if (i2c_bus->periph_id == PERIPH_ID_I2C2) + * if (i2c_bus->clk.id == PERIPH_ID_I2C2) * i2c_bus->pinmux_config = FUNCMUX_I2C2_PTA; */ - if (i2c_bus->periph_id == -1) - return -EINVAL; #endif is_dvc = dev_get_driver_data(dev) == TYPE_DVC; @@ -444,14 +404,8 @@ static int tegra_i2c_probe(struct udevice *dev) i2c_bus->control = &i2c_bus->regs->control; } i2c_init_controller(i2c_bus); - debug("%s: controller bus %d at %p, periph_id %d, speed %d: ", - is_dvc ? "dvc" : "i2c", dev->seq, i2c_bus->regs, -#ifndef CONFIG_TEGRA186 - i2c_bus->periph_id, -#else - -1, -#endif - i2c_bus->speed); + debug("%s: controller bus %d at %p, speed %d: ", + is_dvc ? "dvc" : "i2c", dev->seq, i2c_bus->regs, i2c_bus->speed); return 0; } |