[U-Boot] [PATCH 10/25] tpm: tpm_tis_i2c: Merge struct tpm into tpm_chip

[christophe.ricard <christophe.ricard@gmail.com>]

Hi Simon,

I almost agree with this one. Except that here tis_init, tis_open... are 
already merged into tpm_tis_i2c...

Best Regards
Christophe
On 11/08/2015 16:48, Simon Glass wrote:
> There are too many structures storing the same sort of information. Move the
> fields from struct tpm into struct tpm_chip and remove the former struct.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
>
>   drivers/tpm/tpm_tis_i2c.c | 24 +++++++++---------------
>   drivers/tpm/tpm_tis_i2c.h |  1 +
>   2 files changed, 10 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/tpm/tpm_tis_i2c.c b/drivers/tpm/tpm_tis_i2c.c
> index 70d21ca..07150ec 100644
> --- a/drivers/tpm/tpm_tis_i2c.c
> +++ b/drivers/tpm/tpm_tis_i2c.c
> @@ -375,12 +375,6 @@ static const u8 tpm_ordinal_duration[TPM_MAX_ORDINAL] = {
>   	TPM_MEDIUM,
>   };
>   
> -/* TPM configuration */
> -struct tpm {
> -	struct udevice *dev;
> -	char inited;
> -} tpm;
> -
>   static struct tpm_chip g_chip;
>   
>   /*
> @@ -976,7 +970,7 @@ static void tpm_close(void)
>    * @param dev	Returns a configuration of TPM device
>    * @return 0 if ok, -1 on error
>    */
> -static int tpm_decode_config(struct tpm *dev)
> +static int tpm_decode_config(struct tpm_chip *chip)
>   {
>   	const void *blob = gd->fdt_blob;
>   	struct udevice *bus;
> @@ -1021,7 +1015,7 @@ static int tpm_decode_config(struct tpm *dev)
>   	 * TODO(sjg at chromium.org): Older TPMs will need to use the older method
>   	 * in iic_tpm_read() so the offset length needs to be 0 here.
>   	 */
> -	ret = i2c_get_chip(bus, chip_addr, 1, &dev->dev);
> +	ret = i2c_get_chip(bus, chip_addr, 1, &chip->dev);
>   	if (ret) {
>   		debug("Cannot find device for node '%s: ret=%d'\n",
>   		      fdt_get_name(blob, node, NULL), ret);
> @@ -1033,15 +1027,15 @@ static int tpm_decode_config(struct tpm *dev)
>   
>   int tis_init(void)
>   {
> -	if (tpm.inited)
> +	if (g_chip.inited)
>   		return 0;
>   
> -	if (tpm_decode_config(&tpm))
> +	if (tpm_decode_config(&g_chip))
>   		return -1;
>   
>   	debug("%s: done\n", __func__);
>   
> -	tpm.inited = 1;
> +	g_chip.inited = 1;
>   
>   	return 0;
>   }
> @@ -1050,17 +1044,17 @@ int tis_open(void)
>   {
>   	int rc;
>   
> -	if (!tpm.inited)
> +	if (!g_chip.inited)
>   		return -1;
>   
> -	rc = tpm_open_dev(tpm.dev);
> +	rc = tpm_open_dev(g_chip.dev);
>   
>   	return rc;
>   }
>   
>   int tis_close(void)
>   {
> -	if (!tpm.inited)
> +	if (!g_chip.inited)
>   		return -1;
>   
>   	tpm_close();
> @@ -1074,7 +1068,7 @@ int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
>   	int len;
>   	uint8_t buf[4096];
>   
> -	if (!tpm.inited)
> +	if (!g_chip.inited)
>   		return -1;
>   
>   	if (sizeof(buf) < sbuf_size)
> diff --git a/drivers/tpm/tpm_tis_i2c.h b/drivers/tpm/tpm_tis_i2c.h
> index 0fec464..161e63b 100644
> --- a/drivers/tpm/tpm_tis_i2c.h
> +++ b/drivers/tpm/tpm_tis_i2c.h
> @@ -43,6 +43,7 @@ enum i2c_chip_type {
>   };
>   
>   struct tpm_chip {
> +	bool inited;
>   	int is_open;
>   	u8 req_complete_mask;
>   	u8 req_complete_val;