diff options
| author | York Sun <yorksun@freescale.com> | 2014-02-10 14:02:52 -0800 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2014-04-29 07:10:27 +0200 |
| commit | dec1861be90c948ea9fb771927d3d26a994d2e20 (patch) | |
| tree | 11faa5e4eaa0a614155e79653e688df3fd57796c /drivers/i2c | |
| parent | 8854070784450f7ade382c5792b2721fbe27315a (diff) | |
driver/mxc_i2c: Move static data structure to global_data
This driver needs a data structure in SRAM before SDRAM is available.
This is not alway the case using .data section. Moving this data
structure to global_data guarantees it is writable.
Signed-off-by: York Sun <yorksun@freescale.com>
CC: Troy Kisky <troy.kisky@boundarydevices.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index 595019b3b8..48468d74bd 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -22,6 +22,8 @@ #include <i2c.h> #include <watchdog.h> +DECLARE_GLOBAL_DATA_PTR; + #ifdef I2C_QUIRK_REG struct mxc_i2c_regs { uint8_t iadr; @@ -411,12 +413,6 @@ struct sram_data { struct i2c_parms i2c_data[3]; }; -/* - * For SPL boot some boards need i2c before SDRAM is initialized so force - * variables to live in SRAM - */ -static struct sram_data __attribute__((section(".data"))) srdata; - static void * const i2c_bases[] = { #if defined(CONFIG_MX25) (void *)IMX_I2C_BASE, @@ -445,9 +441,10 @@ void *i2c_get_base(struct i2c_adapter *adap) static struct i2c_parms *i2c_get_parms(void *base) { + struct sram_data *srdata = (void *)gd->srdata; int i = 0; - struct i2c_parms *p = srdata.i2c_data; - while (i < ARRAY_SIZE(srdata.i2c_data)) { + struct i2c_parms *p = srdata->i2c_data; + while (i < ARRAY_SIZE(srdata->i2c_data)) { if (p->base == base) return p; p++; @@ -490,8 +487,9 @@ static int mxc_i2c_probe(struct i2c_adapter *adap, uint8_t chip) void bus_i2c_init(void *base, int speed, int unused, int (*idle_bus_fn)(void *p), void *idle_bus_data) { + struct sram_data *srdata = (void *)gd->srdata; int i = 0; - struct i2c_parms *p = srdata.i2c_data; + struct i2c_parms *p = srdata->i2c_data; if (!base) return; for (;;) { @@ -505,7 +503,7 @@ void bus_i2c_init(void *base, int speed, int unused, } p++; i++; - if (i >= ARRAY_SIZE(srdata.i2c_data)) + if (i >= ARRAY_SIZE(srdata->i2c_data)) return; } bus_i2c_set_bus_speed(base, speed); |