Now that this is always 1, remove it and the associated dead code.
Signed-off-by: Simon Glass sjg@chromium.org ---
README | 7 +-- drivers/i2c/i2c_core.c | 104 ----------------------------------------- include/i2c.h | 35 -------------- 3 files changed, 1 insertion(+), 145 deletions(-)
diff --git a/README b/README index 44dafa3be98..461c5d4d0e3 100644 --- a/README +++ b/README @@ -771,13 +771,8 @@ The following options need to be configured: CFG_SYS_NUM_I2C_BUSES Hold the number of i2c buses you want to use.
- CFG_SYS_I2C_DIRECT_BUS - define this, if you don't use i2c muxes on your hardware. - CFG_SYS_I2C_BUSES - hold a list of buses you want to use, only used if - CFG_SYS_I2C_DIRECT_BUS is not defined, for example - a board with CFG_SYS_NUM_I2C_BUSES = 9: + hold a list of buses you want to use
CFG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ diff --git a/drivers/i2c/i2c_core.c b/drivers/i2c/i2c_core.c index f371d952af5..cccd45027db 100644 --- a/drivers/i2c/i2c_core.c +++ b/drivers/i2c/i2c_core.c @@ -33,100 +33,8 @@ struct i2c_adapter *i2c_get_adapter(int index) return i2c_adap_p; }
-#if !defined(CFG_SYS_I2C_DIRECT_BUS) -struct i2c_bus_hose i2c_bus[CFG_SYS_NUM_I2C_BUSES] = - CFG_SYS_I2C_BUSES; -#endif - DECLARE_GLOBAL_DATA_PTR;
-#ifndef CFG_SYS_I2C_DIRECT_BUS -/* - * i2c_mux_set() - * ------------- - * - * This turns on the given channel on I2C multiplexer chip connected to - * a given I2C adapter directly or via other multiplexers. In the latter - * case the entire multiplexer chain must be initialized first starting - * with the one connected directly to the adapter. When disabling a chain - * muxes must be programmed in reverse order, starting with the one - * farthest from the adapter. - * - * mux_id is the multiplexer chip type from defined in i2c.h. So far only - * NXP (Philips) PCA954x multiplexers are supported. Switches are NOT - * supported (anybody uses them?) - */ - -static int i2c_mux_set(struct i2c_adapter *adap, int mux_id, int chip, - int channel) -{ - uint8_t buf; - int ret; - - /* channel < 0 - turn off the mux */ - if (channel < 0) { - buf = 0; - ret = adap->write(adap, chip, 0, 0, &buf, 1); - if (ret) - printf("%s: Could not turn off the mux.\n", __func__); - return ret; - } - - switch (mux_id) { - case I2C_MUX_PCA9540_ID: - case I2C_MUX_PCA9542_ID: - if (channel > 1) - return -1; - buf = (uint8_t)((channel & 0x01) | (1 << 2)); - break; - case I2C_MUX_PCA9544_ID: - if (channel > 3) - return -1; - buf = (uint8_t)((channel & 0x03) | (1 << 2)); - break; - case I2C_MUX_PCA9547_ID: - if (channel > 7) - return -1; - buf = (uint8_t)((channel & 0x07) | (1 << 3)); - break; - case I2C_MUX_PCA9548_ID: - if (channel > 7) - return -1; - buf = (uint8_t)(0x01 << channel); - break; - default: - printf("%s: wrong mux id: %d\n", __func__, mux_id); - return -1; - } - - ret = adap->write(adap, chip, 0, 0, &buf, 1); - if (ret) - printf("%s: could not set mux: id: %d chip: %x channel: %d\n", - __func__, mux_id, chip, channel); - return ret; -} - -static int i2c_mux_set_all(void) -{ - struct i2c_bus_hose *i2c_bus_tmp = &i2c_bus[I2C_BUS]; - int i; - - return 0; -} - -static int i2c_mux_disconnect_all(void) -{ - struct i2c_bus_hose *i2c_bus_tmp = &i2c_bus[I2C_BUS]; - int i; - uint8_t buf = 0; - - if (I2C_ADAP->init_done == 0) - return 0; - - return 0; -} -#endif - /* * i2c_init_bus(): * --------------- @@ -200,11 +108,6 @@ int i2c_set_bus_num(unsigned int bus) if ((bus == I2C_BUS) && (I2C_ADAP->init_done > 0)) return 0;
-#ifndef CFG_SYS_I2C_DIRECT_BUS - if (bus >= CFG_SYS_NUM_I2C_BUSES) - return -1; -#endif - max = ll_entry_count(struct i2c_adapter, i2c); if (I2C_ADAPTER(bus) >= max) { printf("Error, wrong i2c adapter %d max %d possible\n", @@ -212,17 +115,10 @@ int i2c_set_bus_num(unsigned int bus) return -2; }
-#ifndef CFG_SYS_I2C_DIRECT_BUS - i2c_mux_disconnect_all(); -#endif - gd->cur_i2c_bus = bus; if (I2C_ADAP->init_done == 0) i2c_init_bus(bus, I2C_ADAP->speed, I2C_ADAP->slaveaddr);
-#ifndef CFG_SYS_I2C_DIRECT_BUS - i2c_mux_set_all(); -#endif return 0; }
diff --git a/include/i2c.h b/include/i2c.h index 180b71f1451..91917f54be9 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -646,7 +646,6 @@ void i2c_early_init_f(void); #define I2C_RXTX_LEN 128 /* maximum tx/rx buffer length */
/* no muxes used bus = i2c adapters */ -#define CFG_SYS_I2C_DIRECT_BUS 1 #define CFG_SYS_NUM_I2C_BUSES ll_entry_count(struct i2c_adapter, i2c)
struct i2c_adapter { @@ -692,47 +691,13 @@ struct i2c_adapter {
struct i2c_adapter *i2c_get_adapter(int index);
-#ifndef CFG_SYS_I2C_DIRECT_BUS -struct i2c_mux { - int id; - char name[16]; -}; - -struct i2c_next_hop { - struct i2c_mux mux; - uint8_t chip; - uint8_t channel; -}; - -struct i2c_bus_hose { - int adapter; -}; -#define I2C_NULL_HOP {{-1, ""}, 0, 0} -extern struct i2c_bus_hose i2c_bus[]; - -#define I2C_ADAPTER(bus) i2c_bus[bus].adapter -#else #define I2C_ADAPTER(bus) bus -#endif #define I2C_BUS gd->cur_i2c_bus
#define I2C_ADAP_NR(bus) i2c_get_adapter(I2C_ADAPTER(bus)) #define I2C_ADAP I2C_ADAP_NR(gd->cur_i2c_bus) #define I2C_ADAP_HWNR (I2C_ADAP->hwadapnr)
-#ifndef CFG_SYS_I2C_DIRECT_BUS -#define I2C_MUX_PCA9540_ID 1 -#define I2C_MUX_PCA9540 {I2C_MUX_PCA9540_ID, "PCA9540B"} -#define I2C_MUX_PCA9542_ID 2 -#define I2C_MUX_PCA9542 {I2C_MUX_PCA9542_ID, "PCA9542A"} -#define I2C_MUX_PCA9544_ID 3 -#define I2C_MUX_PCA9544 {I2C_MUX_PCA9544_ID, "PCA9544A"} -#define I2C_MUX_PCA9547_ID 4 -#define I2C_MUX_PCA9547 {I2C_MUX_PCA9547_ID, "PCA9547A"} -#define I2C_MUX_PCA9548_ID 5 -#define I2C_MUX_PCA9548 {I2C_MUX_PCA9548_ID, "PCA9548"} -#endif - #ifndef I2C_SOFT_DECLARATIONS # if (defined(CONFIG_AT91RM9200) || \ defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9261) || \